+++ /dev/null
-From: Ivo van Doorn <ivdoorn@gmail.com>
-Date: Fri, 11 May 2007 19:59:40 +0000 (-0400)
-Subject: [PATCH] Add 93cx6 eeprom library
-X-Git-Tag: v2.6.23-rc1~1201^2~74
-X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=9467d64b0e88763914c01f71ddf591b166c4f526
-
-[PATCH] Add 93cx6 eeprom library
-
-This patch adds a library for reading from 93cx6 eeproms.
-
-Signed-off-by: Michael Wu <flamingice@sourmilk.net>
-Signed-off-by: John W. Linville <linville@tuxdriver.com>
----
-
-diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
-index 616eee9..bd601ef 100644
---- a/drivers/misc/Kconfig
-+++ b/drivers/misc/Kconfig
-@@ -34,6 +34,11 @@ config PHANTOM
- If you choose to build module, its name will be phantom. If unsure,
- say N here.
-
-+config EEPROM_93CX6
-+ tristate "EEPROM 93CX6 support"
-+ ---help---
-+ This is a driver for the EEPROM chipsets 93c46 and 93c66.
-+ The driver supports both read as well as write commands.
-
- If unsure, say N.
-
-@@ -187,5 +192,4 @@ config THINKPAD_ACPI_BAY
-
- If you are not sure, say Y here.
-
--
- endmenu
-diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
-index 8abbf2f..b5ce0e3 100644
---- a/drivers/misc/Makefile
-+++ b/drivers/misc/Makefile
-@@ -14,3 +14,4 @@ obj-$(CONFIG_PHANTOM) += phantom.o
- obj-$(CONFIG_SGI_IOC4) += ioc4.o
- obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o
- obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o
-+obj-$(CONFIG_EEPROM_93CX6) += eeprom_93cx6.o
-diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
-new file mode 100644
-index 0000000..bfcb434
---- /dev/null
-+++ b/drivers/misc/eeprom_93cx6.c
-@@ -0,0 +1,229 @@
-+/*
-+ Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
-+ <http://rt2x00.serialmonkey.com>
-+
-+ This program is free software; you can redistribute it and/or modify
-+ it under the terms of the GNU General Public License as published by
-+ the Free Software Foundation; either version 2 of the License, or
-+ (at your option) any later version.
-+
-+ This program is distributed in the hope that it will be useful,
-+ but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ GNU General Public License for more details.
-+
-+ You should have received a copy of the GNU General Public License
-+ along with this program; if not, write to the
-+ Free Software Foundation, Inc.,
-+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-+ */
-+
-+/*
-+ Module: eeprom_93cx6
-+ Abstract: EEPROM reader routines for 93cx6 chipsets.
-+ Supported chipsets: 93c46 & 93c66.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/version.h>
-+#include <linux/delay.h>
-+#include <linux/eeprom_93cx6.h>
-+
-+MODULE_AUTHOR("http://rt2x00.serialmonkey.com");
-+MODULE_VERSION("1.0");
-+MODULE_DESCRIPTION("EEPROM 93cx6 chip driver");
-+MODULE_LICENSE("GPL");
-+
-+static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
-+{
-+ eeprom->reg_data_clock = 1;
-+ eeprom->register_write(eeprom);
-+ udelay(1);
-+}
-+
-+static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
-+{
-+ eeprom->reg_data_clock = 0;
-+ eeprom->register_write(eeprom);
-+ udelay(1);
-+}
-+
-+static void eeprom_93cx6_startup(struct eeprom_93cx6 *eeprom)
-+{
-+ /*
-+ * Clear all flags, and enable chip select.
-+ */
-+ eeprom->register_read(eeprom);
-+ eeprom->reg_data_in = 0;
-+ eeprom->reg_data_out = 0;
-+ eeprom->reg_data_clock = 0;
-+ eeprom->reg_chip_select = 1;
-+ eeprom->register_write(eeprom);
-+
-+ /*
-+ * kick a pulse.
-+ */
-+ eeprom_93cx6_pulse_high(eeprom);
-+ eeprom_93cx6_pulse_low(eeprom);
-+}
-+
-+static void eeprom_93cx6_cleanup(struct eeprom_93cx6 *eeprom)
-+{
-+ /*
-+ * Clear chip_select and data_in flags.
-+ */
-+ eeprom->register_read(eeprom);
-+ eeprom->reg_data_in = 0;
-+ eeprom->reg_chip_select = 0;
-+ eeprom->register_write(eeprom);
-+
-+ /*
-+ * kick a pulse.
-+ */
-+ eeprom_93cx6_pulse_high(eeprom);
-+ eeprom_93cx6_pulse_low(eeprom);
-+}
-+
-+static void eeprom_93cx6_write_bits(struct eeprom_93cx6 *eeprom,
-+ const u16 data, const u16 count)
-+{
-+ unsigned int i;
-+
-+ eeprom->register_read(eeprom);
-+
-+ /*
-+ * Clear data flags.
-+ */
-+ eeprom->reg_data_in = 0;
-+ eeprom->reg_data_out = 0;
-+
-+ /*
-+ * Start writing all bits.
-+ */
-+ for (i = count; i > 0; i--) {
-+ /*
-+ * Check if this bit needs to be set.
-+ */
-+ eeprom->reg_data_in = !!(data & (1 << (i - 1)));
-+
-+ /*
-+ * Write the bit to the eeprom register.
-+ */
-+ eeprom->register_write(eeprom);
-+
-+ /*
-+ * Kick a pulse.
-+ */
-+ eeprom_93cx6_pulse_high(eeprom);
-+ eeprom_93cx6_pulse_low(eeprom);
-+ }
-+
-+ eeprom->reg_data_in = 0;
-+ eeprom->register_write(eeprom);
-+}
-+
-+static void eeprom_93cx6_read_bits(struct eeprom_93cx6 *eeprom,
-+ u16 *data, const u16 count)
-+{
-+ unsigned int i;
-+ u16 buf = 0;
-+
-+ eeprom->register_read(eeprom);
-+
-+ /*
-+ * Clear data flags.
-+ */
-+ eeprom->reg_data_in = 0;
-+ eeprom->reg_data_out = 0;
-+
-+ /*
-+ * Start reading all bits.
-+ */
-+ for (i = count; i > 0; i--) {
-+ eeprom_93cx6_pulse_high(eeprom);
-+
-+ eeprom->register_read(eeprom);
-+
-+ /*
-+ * Clear data_in flag.
-+ */
-+ eeprom->reg_data_in = 0;
-+
-+ /*
-+ * Read if the bit has been set.
-+ */
-+ if (eeprom->reg_data_out)
-+ buf |= (1 << (i - 1));
-+
-+ eeprom_93cx6_pulse_low(eeprom);
-+ }
-+
-+ *data = buf;
-+}
-+
-+/**
-+ * eeprom_93cx6_read - Read multiple words from eeprom
-+ * @eeprom: Pointer to eeprom structure
-+ * @word: Word index from where we should start reading
-+ * @data: target pointer where the information will have to be stored
-+ *
-+ * This function will read the eeprom data as host-endian word
-+ * into the given data pointer.
-+ */
-+void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom, const u8 word,
-+ u16 *data)
-+{
-+ u16 command;
-+
-+ /*
-+ * Initialize the eeprom register
-+ */
-+ eeprom_93cx6_startup(eeprom);
-+
-+ /*
-+ * Select the read opcode and the word to be read.
-+ */
-+ command = (PCI_EEPROM_READ_OPCODE << eeprom->width) | word;
-+ eeprom_93cx6_write_bits(eeprom, command,
-+ PCI_EEPROM_WIDTH_OPCODE + eeprom->width);
-+
-+ /*
-+ * Read the requested 16 bits.
-+ */
-+ eeprom_93cx6_read_bits(eeprom, data, 16);
-+
-+ /*
-+ * Cleanup eeprom register.
-+ */
-+ eeprom_93cx6_cleanup(eeprom);
-+}
-+EXPORT_SYMBOL_GPL(eeprom_93cx6_read);
-+
-+/**
-+ * eeprom_93cx6_multiread - Read multiple words from eeprom
-+ * @eeprom: Pointer to eeprom structure
-+ * @word: Word index from where we should start reading
-+ * @data: target pointer where the information will have to be stored
-+ * @words: Number of words that should be read.
-+ *
-+ * This function will read all requested words from the eeprom,
-+ * this is done by calling eeprom_93cx6_read() multiple times.
-+ * But with the additional change that while the eeprom_93cx6_read
-+ * will return host ordered bytes, this method will return little
-+ * endian words.
-+ */
-+void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom, const u8 word,
-+ __le16 *data, const u16 words)
-+{
-+ unsigned int i;
-+ u16 tmp;
-+
-+ for (i = 0; i < words; i++) {
-+ tmp = 0;
-+ eeprom_93cx6_read(eeprom, word + i, &tmp);
-+ data[i] = cpu_to_le16(tmp);
-+ }
-+}
-+EXPORT_SYMBOL_GPL(eeprom_93cx6_multiread);
-+
-diff --git a/include/linux/eeprom_93cx6.h b/include/linux/eeprom_93cx6.h
-new file mode 100644
-index 0000000..d774b77
---- /dev/null
-+++ b/include/linux/eeprom_93cx6.h
-@@ -0,0 +1,72 @@
-+/*
-+ Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
-+ <http://rt2x00.serialmonkey.com>
-+
-+ This program is free software; you can redistribute it and/or modify
-+ it under the terms of the GNU General Public License as published by
-+ the Free Software Foundation; either version 2 of the License, or
-+ (at your option) any later version.
-+
-+ This program is distributed in the hope that it will be useful,
-+ but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ GNU General Public License for more details.
-+
-+ You should have received a copy of the GNU General Public License
-+ along with this program; if not, write to the
-+ Free Software Foundation, Inc.,
-+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-+ */
-+
-+/*
-+ Module: eeprom_93cx6
-+ Abstract: EEPROM reader datastructures for 93cx6 chipsets.
-+ Supported chipsets: 93c46 & 93c66.
-+ */
-+
-+/*
-+ * EEPROM operation defines.
-+ */
-+#define PCI_EEPROM_WIDTH_93C46 6
-+#define PCI_EEPROM_WIDTH_93C66 8
-+#define PCI_EEPROM_WIDTH_OPCODE 3
-+#define PCI_EEPROM_WRITE_OPCODE 0x05
-+#define PCI_EEPROM_READ_OPCODE 0x06
-+#define PCI_EEPROM_EWDS_OPCODE 0x10
-+#define PCI_EEPROM_EWEN_OPCODE 0x13
-+
-+/**
-+ * struct eeprom_93cx6 - control structure for setting the commands
-+ * for reading the eeprom data.
-+ * @data: private pointer for the driver.
-+ * @register_read(struct eeprom_93cx6 *eeprom): handler to
-+ * read the eeprom register, this function should set all reg_* fields.
-+ * @register_write(struct eeprom_93cx6 *eeprom): handler to
-+ * write to the eeprom register by using all reg_* fields.
-+ * @width: eeprom width, should be one of the PCI_EEPROM_WIDTH_* defines
-+ * @reg_data_in: register field to indicate data input
-+ * @reg_data_out: register field to indicate data output
-+ * @reg_data_clock: register field to set the data clock
-+ * @reg_chip_select: register field to set the chip select
-+ *
-+ * This structure is used for the communication between the driver
-+ * and the eeprom_93cx6 handlers for reading the eeprom.
-+ */
-+struct eeprom_93cx6 {
-+ void *data;
-+
-+ void (*register_read)(struct eeprom_93cx6 *eeprom);
-+ void (*register_write)(struct eeprom_93cx6 *eeprom);
-+
-+ int width;
-+
-+ char reg_data_in;
-+ char reg_data_out;
-+ char reg_data_clock;
-+ char reg_chip_select;
-+};
-+
-+extern void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom,
-+ const u8 word, u16 *data);
-+extern void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom,
-+ const u8 word, __le16 *data, const u16 words);
+++ /dev/null
-GIT 1783e2f0f21444020e3dee1be46b1e34af0ea3e7 git+ssh://master.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-newsetup.git
-
-commit 1783e2f0f21444020e3dee1be46b1e34af0ea3e7
-Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
-Date: Wed Jun 20 14:12:39 2007 -0700
-
- Use a new CPU feature word to cover all Intel features that are spread around
-
- in different CPUID leafs like 0x5, 0x6 and 0xA. Make this
- feature detection code common across i386 and x86_64.
-
- Display Intel Dynamic Acceleration feature in /proc/cpuinfo. This feature
- will be enabled automatically by current acpi-cpufreq driver.
-
- Refer to Intel Software Developer's Manual for more details about the feature.
-
- Thanks to hpa (H Peter Anvin) for the making the actual code detecting the
- scattered features data-driven.
-
- Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit cd19eb67cd6636a4e5c9df99631422c7c7286f59
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed Jun 20 14:33:17 2007 -0700
-
- x86 setup: move __bss_start into the .bss segment
-
- Move __bss_start into the .bss segment, and create __bss_end.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 100327ad6b609cd28970219be57d293847d1261d
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed Jun 6 22:07:01 2007 -0700
-
- x86 setup: remove TSC as a required feature
-
- Remove TSC as a required feature, in anticipation of CONFIG_X86_TSC
- removal.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 7c91a172b8af7d4ba087f1f88ed5b155ed459ca3
-Author: Antonino A. Daplas <adaplas@gmail.com>
-Date: Tue Jun 5 19:21:05 2007 +0800
-
- i386: Set 6-bit DAC channel properties in vesa video setup
-
- If the video BIOS is not capable of switching or failed to switch the
- hardware to 8-bit DAC, the channel properties are not set. This leads
- to a blank (all black) display with vesafb at 8 bpp. Fix by defaulting
- to a 6-bit DAC.
-
- Signed-off-by: Antonino Daplas <adaplas@gmail.com>
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 6eac2d442de8d87eac94a4ca8600bd87219fa06b
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue Jun 5 16:19:36 2007 -0700
-
- x86 setup: arch/i386/boot/cpucheck.c whitespace cleanup
-
- Remove stealth whitespace
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit f7d89f05a30433034a1b4651143afdbb2a8a9c92
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 24 16:56:44 2007 -0700
-
- hd.c: remove BIOS/CMOS queries
-
- An ST-506 disk these days is pretty much someone trying to pull ancient
- data using an auxilliary controller. Pulling data from the BIOS or CMOS
- is just plain wrong, since it's likely to be the primary OS disk... and
- would be user-entered data anyway. Instead, require the user enters it
- on the command line.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 14c2fdb3bbfd6a9a774980e446c2443150749891
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 24 15:25:10 2007 -0700
-
- x86: add back pbe bit to visible CPUID flags
-
- Add pbe back to the visible CPUID flags. We *do* correctly filter abuses
- of this bit for 3DNow! in all the appropriate paths.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit e071b068a3b9f318be314f0378e655e2eb50ac89
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 23 14:52:34 2007 -0700
-
- x86 setup: VIA feature mask MSR doesn't just apply to model <= 9
-
- The VIA feature mask MSR is known to be present on model 10, and it
- seems likely it will continue to be supported. Since we only touch the
- MSR if we're about to print an error message anyway, go ahead and be
- aggressive.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit abe0c5aa1827932cda9c754a3842ec22b278d704
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 22 17:17:41 2007 -0700
-
- x86 setup: correct inline assembly constraints in edd.c
-
- Fix the inline assembly constraints in edd.c. In particular, "driveno"
- was getting clobbered on some (buggy?) BIOSes.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit c2e5887ad275aab90673a3e33344f09946159cf7
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 18 10:02:55 2007 -0700
-
- x86 setup: force the assembler to generate a 2-byte jump in header
-
- The jump instruction in the header only has two bytes available, so
- it *better* be a 2-byte jump! Unfortunately, the assembler will
- always generate a 3/5-byte jump when the target is in a different
- section. Deal with that by generating the jump instruction
- explicitly from .byte's, just like we do elsewhere when we need a
- specific binary representation of a certain instruction.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit ce82e3b93eba48b6852822a03efa73c74e165d4f
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 17 15:44:48 2007 -0700
-
- x86 setup: move the symbol start_of_setup into the proper section.
-
- start_of_setup is the beginning of the executable code and should be
- located in the appropriate section.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit e5f3a529457a5bfaf8f8783fb86013221279a81c
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 17 15:43:19 2007 -0700
-
- x86 setup: add an ASSERT that the header ends up in the right place
-
- Just in case we have funnies involving the linker or people putting
- inappropriate align statements, make the linker abort if the setup
- header ends up in the wrong place.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit d9dbde725687ab99d1f529f49f14d1e280cc5cac
-Author: Alexander van Heukelum <heukelum@mailshack.com>
-Date: Thu May 17 20:54:25 2007 +0200
-
- x86 new setup: use appropriate sections for code and data
-
- An intermediate elf file is generated for the 16-bit setup code.
- The generated code can be viewed using objdump -m i8086 -d. As it
- stands, it also tries to disassemble the bugger_off_msg, which
- results in garbage. This introduces two new sections to separate
- the code and the data part of the bootsector stub. It also moves
- some code from the .header section (a data section) to .inittext.
-
- Signed-off-by: Alexander van Heukelum <heukelum@mailshack.com>
-
-commit 0d7558a81cf61e9fd2332a54897c5fd18df0d7f2
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 16 22:03:16 2007 -0700
-
- x86 setup: use -include code16gcc.h instead of explicit #include
-
- Use -include in the Makefile instead of #include to include code16gcc.h.
- This really is more of a compiler switch than anything else, and is a lot
- cleaner to do implicitly.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 017ce54e8a4a9628a76d6b510c7309a7e4e111a8
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 16 18:48:06 2007 -0700
-
- x86 setup: enable features on Centaur (VIA) and Transmeta processors
-
- AMD are not the only ones who sometimes mask features which the kernel
- may very well depend on. VIA and Transmeta do, too. Add code to enable
- these features during checking.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit b794f5f9c5089709f3df38c6d91869fa38a9c1a4
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 16 16:37:47 2007 -0700
-
- x86 setup: in older versions of ld, ASSERT() is an expression
-
- Older versions of ld (pre-2.15 or so) need:
-
- . = ASSERT(foo, "msg");
-
- instead of:
-
- ASSERT(foo, "msg")
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 21c2b7c99c417d07015ee8e516a634ec3d98c4ee
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 16 10:52:41 2007 -0700
-
- x86 setup: print a warning message if the bootloader gave us no heap.
-
- If the bootloader is so old it doesn't set the CAN_USE_HEAP flag,
- a lot of functionality will by necessity be disabled, so print a
- warning message. This means either a 2.00 protocol bootloader or
- a buggy bootloader; the Qemu bootloader falls in this category.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 52ca0431390d389a2a2246f02fe652ea84c1ddd8
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 16 10:51:03 2007 -0700
-
- x86 setup: rely on a compiled-in default for load high/load low
-
- When deciding if we should move the kernel from 0x10000 to 0x1000, as
- is required for a zImage kernel, rely on a compiled-in default since
- Qemu unconditionally zeroes the loadflags. This, of course, is a bug
- in Qemu, but still...
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 4db77a97793104a32e5fb83e62b943fa144b329d
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 16 08:45:37 2007 -0700
-
- x86 setup: correct assembly constraints.
-
- Double use of "d" in an asm() constraints; most gcc versions correctly
- detect and avoid using it, but some version of gcc runs itself into
- a brick wall instead. Fix the one "d" which should have been "a".
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 4fbccbc1457d6710d3a9ce55ad70ec6cb0b75fc5
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 15 09:16:29 2007 -0700
-
- x86 setup: include <asm/msr-index.h> not <asm/msr.h>
-
- <asm/msr.h> brings in the accessor functions, which may potentially
- bring in all other kinds of kernel headers which are inappropriate for
- the setup code. For the setup code, include <asm/msr-index.h>
- instead, which only includes the numeric constants.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 839cafa9c0020e7506722dd2a4fd82a71c2939cc
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Mon May 14 15:49:01 2007 -0700
-
- x86 setup: protocol 2.0[01]: base for CL_OFFSET depends on setup_move_size
-
- Handle the use of boot protocol 2.00 and 2.01: the base segment for
- CL_OFFSET depends on the value of setup_move_size.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit d60357ad68a694b03e9b952eadba5ac277c31df0
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 12 12:18:53 2007 -0700
-
- x86 setup: remove unused variable
-
- Remove unused variable
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit e21a2030b01081612259847321bcce13eae1e883
-Author: Sam Ravnborg <sam@ravnborg.org>
-Date: Sat May 12 12:17:30 2007 -0700
-
- x86 setup: share i386 Makefile with x86_64
-
- The boot Makefile for i386 and x86_64 are equal
- except for the CFLAGS setting.
- Teach x86_64 to use the Makefile from i386 and
- make CFLAGS setting arch dependent in i386 Makefile.
-
- Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 8618d92339d0d106045f98f34833d863c3235cdb
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 12 00:32:12 2007 -0700
-
- x86 setup: video-bios.c missed the pointer to the set_mode method!
-
- We need the actual pointer to the set_mode method (oops!)
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 85dfc374ea9aad33b9e0315f07a4b2722dc11e3e
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 12 00:14:43 2007 -0700
-
- x86 setup: when setting unknown BIOS modes and failing, try to revert
-
- If we set an unknown BIOS mode and fail, then explicitly try to revert
- to the original mode.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit f4f7949f126d2f152b09fa9367b1ec693f2ea818
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 11 11:20:59 2007 -0700
-
- x86 setup: fix typo "video_bios" should be "video-bios"
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 51ba7113ea5b07189b7f8a0534d400a072535197
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 11 11:09:55 2007 -0700
-
- x86 setup: allow setting VESA modes "blind"
-
- Apparently, people really do set VESA modes "blind". As a result, make
- the framework for settting blind modes more general, to remove some
- special cases.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 1b8f73d9b2bf7630a2914ddab606db16fddb509e
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 10 22:08:45 2007 -0700
-
- x86_64: CONFIG_PHYSICAL_ALIGN should be 2 MB
-
- It's not actually used yet, but set CONFIG_PHYSICAL_ALIGN to 2 MB
- as it should be, to prevent conflicts with other works in progress.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit b81f3c88923e4470cd0942d4596fafc0fb1cf4fd
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 10 19:11:32 2007 -0700
-
- x86 setup: remove debugging statements
-
- Remove debugging statements in video.c that were not meant for
- production.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit be58b6d7e9c14e482bce495e8343955999dea77f
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 10 18:49:40 2007 -0700
-
- x86 setup: only restore the screen image when needed
-
- Only restore the screen image when needed. This is how the original
- code behaves, so it's presumably the desired behaviour.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 22f6bd8cc23b512af28e34ae7d40036982a0ac63
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 10 18:44:08 2007 -0700
-
- x86 setup: correct the definition of the GDT limit
-
- Like all other x86 segment limits, the GDT limit points to the last byte
- that is *permitted* to access, so it needs to be sizeof(boot_gdt)-1.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 7f73f1f4aa4c97745bffe07a3ebcf226a4965b00
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 10 15:47:48 2007 -0700
-
- x86 setup: Re-implement scanning for hidden video modes
-
- Re-implement scanning for hidden video modes. Every now and then,
- apparently, you can find them hidden like easter eggs.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 6770176714bc12ec92372311ac02c14f0d22776e
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 10 15:24:27 2007 -0700
-
- x86 setup: whitespace cleanup
-
- Clean up stealth whitespace.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit ba0480a3537cf471b08bdb99dae6d0780cfb1972
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 9 16:54:42 2007 -0700
-
- x86: sync the CPU feature string arrays
-
- With <asm/cpufeature.h> unified, synchronize the CPU feature string
- arrays. The whole kernel/cpu directory really needs to be unified.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit ecb53b84efddbad3d9aa49e95598550831324348
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 8 22:06:04 2007 -0700
-
- x86 setup: need to set orig_video_isVGA
-
- After detecting a VGA console, we need to set
- boot_params.screen_info.orig_video_isVGA.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit dc97fc053faff17b984ec962686caea52bd27628
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 8 20:51:17 2007 -0700
-
- x86 setup: boot sector should use ljmp, not jmpl
-
- We have an "jmpl" instruction in the boot sector, which was meant
- to be an "ljmp" instruction. It worked anyway because gas interpreted
- a two-argument "jmpl" as an "ljmpl" instruction, however, use plain
- "ljmp" (i.e. "ljmpw".)
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 7907f05e9692557c53c9ac13647db5e5343c7c76
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 8 20:27:10 2007 -0700
-
- x86 setup: only make VESA graphics modes selectable if CONFIG_FB
-
- If we select a VESA graphics mode, we better have framebuffer support
- or the user will have no console. Therefore, make these modes
- non-selectable if CONFIG_FB is not set.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 8e509f9ebc44f45544d231454e84f10bf78d5772
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 8 20:24:11 2007 -0700
-
- x86 setup: need to probe VESA EDID block 0 only
-
- The VESA EDID BIOS call takes the EDID block number in %dx, and may
- corrupt it by spec. Pass it in properly.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 9912b9aed7943773d1fadaa2e2e52f42af395048
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Mon May 7 18:22:04 2007 -0700
-
- x86 setup: add missing file "bitops.h" missing from previous checkins
-
- The file "bitops.h" was missing from previous checkins.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 732eb3fac2d772980e6555b8c69902c8107c72aa
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Mon May 7 14:59:43 2007 -0700
-
- x86 setup: add -fno-stack-protector; other Makefile fixes
-
- Add -fno-stack-protector for the gcc's that need that;
- Use -ffreestanding consistently;
- Use $(LINUXINCLUDE);
- Handle linker scripts consistently with other Makefiles.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 2d5e47f21202e156fe97aba0a88d158d5c157a33
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Mon May 7 14:45:25 2007 -0700
-
- x86 setup: swap cpu.c and cpucheck.c; rename functions
-
- Make cpucheck.c the reusable component; the generically-named cpu.c
- gets to be the wrapper. Accordingly, rename functions to make it
- less confusing.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit bf2a428a4e7c1ee3ab9acb23cfafb45e818887a1
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Mon May 7 14:09:38 2007 -0700
-
- x86 setup: remove code moved from cpucheck.c -> cpu.c
-
- Move all info about requirements into cpu.c.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 9ea8429fabe5df6aed6393ac3a00d0b64445ba6a
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Mon May 7 09:42:51 2007 -0700
-
- x86 setup: remove double nesting of a20_test()
-
- a20_test() was invoked as either a20_test() or a20_wait(), where the
- latter was simply a loop around a loop. Make the count a parameter
- instead; this is clearer and saves a couple of bytes.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 9edc55718f57195c664ee3175514d652f651cfd2
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Mon May 7 09:30:41 2007 -0700
-
- x86 setup: compile with -fomit-frame-pointer
-
- Compiling with -fomit-frame-pointer reduces the size by about 2%.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit e1003433f2d491bf17c79437cd75268da220dab5
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Mon May 7 09:30:04 2007 -0700
-
- x86 setup: be more paranoid about the stack setup in header.S
-
- In particular, deal correctly with the stack pointer being zero on entry.
- While we're at it, align the stack.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 853499c3dc3fcbeb192a613ac241d150ebc7c5a0
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sun May 6 23:25:10 2007 -0700
-
- x86 setup: Factor out the environment-independent part of the CPU check.
-
- Factor out the environment-independent part of the CPU check so it can
- be invoked from other parts of the kernel as well.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit f235a61f6d6dff57883efad351d746540bcb8caf
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 5 22:16:54 2007 -0700
-
- x86 setup: when watching the setup size, take the stack into account
-
- When watching the setup size, we have to take the stack into account.
- In particular, the stack is used not only by the setup code itself, but
- by BIOS interrupt handlers and system calls. Reserve a minimum of
- 512 bytes.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 0d0e10091be48f7e4c8888e9d5c2836c704994f5
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 5 19:25:51 2007 -0700
-
- x86 setup: actually check the end of the heap.
-
- Keep track of where the heap ends and actually watch out for it.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 47aab0b8f4d012fad3c42b5b0754d3cb87961b37
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 5 15:47:58 2007 -0700
-
- x86 setup: coppyright rPath, Inc.
-
- This work was done on the dime of rPath, Inc.; they own the copyright.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit d22571534d7eabf9408f29d9da423e1c6e04445f
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 5 15:21:11 2007 -0700
-
- x86 setup: implement screen contents save/restore
-
- The old setup code had screen contents save and restore, so implement
- it for the new one as well.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit e5145601a752bd998e783d159c187d3017d45d6d
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 5 15:20:19 2007 -0700
-
- x86 setup: whitespace cleanup
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 045ecb52f91a74eecad93ffc8791eefe59cf7fd1
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 5 14:22:39 2007 -0700
-
- x86 setup: allow setting of VESA graphics modes; cleanups
-
- - Allow setting of VESA graphics modes (used by vesafb)
- - Clean up the macros related to the heap
- - #if 0 copy functions that aren't actually currently being used
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 58c04ed7e2d7d5979e1917a74b49bdc0f3dde211
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 5 12:06:14 2007 -0700
-
- x86 setup: move all VESA-related code into video-vesa.c; add EDID
-
- - Move all VESA-related code into video-vesa.c
- - Add VESA EDID query support
- - Remove some totally obsolete definitions from video.h
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 07bc3931175fb98256140275c03194426d441b74
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Sat May 5 12:04:40 2007 -0700
-
- x86-64: remove -traditional from AFLAGS
-
- In arch/x86_64/boot/compressed, remove -traditional from AFLAGS.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit a830f615eeef838d461cbf7bbbee8c1c84708ec8
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 18:44:38 2007 -0700
-
- x86 setup: share code between i386 and x86-64
-
- Share the boot (setup) code and tools between i386 and x86-64.
- The compression code is now running in 64-bit mode in order to support
- relocation, so do *not* share that code.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 3e159a323bdfa5d5a7be2c1f6be089ca22d598e0
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 18:43:35 2007 -0700
-
- x86-64: use 0x1b4 as the scratch area in boot_params, not 0x3c
-
- Use 0x1b4 as the scratch area in boot_params rather than 0x3c.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 4cf4424e7a0f29f251b781f9b5e3655b0645cb7f
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 18:26:18 2007 -0700
-
- Revert "x86-64: Make arch/x86-64/boot a symlink to arch/i386/boot"
-
- This reverts commit b2ad90f4969226fe8cf3edc5330711ed5fc20105.
-
- Restore arch/x86_64/boot as a separate directory hierarchy.
-
- Conflicts:
-
-commit 8ed1ae1d2f94410811b7cca4b1a426e37652457f
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 17:00:33 2007 -0700
-
- x86-64: It appears MTRR isn't a required feature after all.
-
- MTRR was documented as a required feature, but appears to boot fine
- without it (tested since Bochs doesn't have MTRR support.)
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 7c616d098579fb790662cdc703f2a0f26ea1668c
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 16:22:57 2007 -0700
-
- x86 setup: use 0x1e4 as scratch, instead of 0x3c
-
- The compressed relocation needs a 4-byte scratch area to obtain
- its own address.
-
- 0x3c is at the end of the video area, which is quite constrained -- it
- only has 6 bytes left (12 if we recycle the obsolete fields which invade
- this space.) Define 0x1e4 as a scratch field, and use it.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 5bc1019227e94576e4876d05ee920f59195bce90
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 16:09:15 2007 -0700
-
- x86 setup: boot_params.e820_map is just the map, not the count; adjust
-
- boot_params.e820_map is just a list of entries, whereas
- "struct e820map" contains a count as well. Thus, don't use
- "struct e820map" to describe struct boot_params.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 0f96b52497f444be2d52d1184ca90be49f713ea3
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 15:49:03 2007 -0700
-
- x86 setup: E820MAX is a definitional constant; no need to use sizeof hacks
-
- Now when we're using the standard headers for the setup code, we can use
- E820MAX instead of playing sizeof games.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 3a23a428b20cbb31fd7ff5516a053b99afc447f7
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 12:08:46 2007 -0700
-
- x86: move the bootparam structure definition into include/
-
- Move the bootparam structure definition into include/, and make other
- things use it. Haven't cleaned up all the macros yet, though.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit e93ec58911995971aa059990f8a91a02b05f6c8f
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 12:07:50 2007 -0700
-
- i386: change %lu to %u in arch/i386/kernel/e820.h
-
- It's an u32, print it with %u
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 2f47f004f614e2744867c0df274c55d8af2a42d5
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 12:06:04 2007 -0700
-
- x86: fix differences between i386 and x86-64 <asm/e820.h>
-
- Fix minor differences between i386 and x86-64 <asm/e820.h>
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 56ec52f14e948f430af941052adee98019a617b7
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 11:45:17 2007 -0700
-
- x86: fix the definition of struct screen_info
-
- Name the fields that aren't really struct screen_info, and declare
- the structure packed (the "capabilities" field is misaligned.)
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 1d4429eaa564b0085d9ee3aa2de57e87a093a14e
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 11:43:10 2007 -0700
-
- x86-64: Make arch/x86-64/boot a symlink to arch/i386/boot
-
- Until such time that Kbuild allows for a cleaner solution, make
- arch/x86-64/boot a symlink to arch/i386/boot.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 6a85f1b5fd041ea99d8604782559ce0502a60cc0
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 10:42:06 2007 -0700
-
- x86-64: rearrange includes due to unifications and inclusion from setup
-
- Unification caused a circular dependency between <asm/alternative.h>
- and <asm/cpufeature.h>; resolve this.
-
- Add #ifndef _SETUP in <asm/e820.h> so it can be included from the boot
- code.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit f6bbdc254bdbd5f7cf7a40c4cd6f9844af90824a
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 10:40:26 2007 -0700
-
- x86: Complete <asm/cpufeature.h> with the union of i386 and x86-64
-
- Add a feature to <asm/cpufeature.h> which was previously present
- in x86-64 but missing in i386.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 1a0819281060489901732914f67869e0aa8f26fd
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 10:39:32 2007 -0700
-
- x86: unify <asm/boot.h>
-
- Unify <asm/boot.h> between i386 and x86-64
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 8d9c54585f4623e0310f970fb5c6eda7ec1614df
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 10:38:35 2007 -0700
-
- x86-64: verify_cpu.S: use new masks
-
- Use the <asm/required-features.h> masks.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 6cf3308646bb7a3210f0f76bcb895b2dea76a93c
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 10:37:26 2007 -0700
-
- x86-64: fix compilation errors due to required-features.h change
-
- Fix compilation errors induced by required-features.h change.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 1324201a93ce380b46a3128826ecbd794e617e59
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 10:35:37 2007 -0700
-
- x86-64: <asm/segment.h>: add boot segment descriptors
-
- Add boot segment descriptors to <asm/segment.h> to match i386.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit a0b15a9e79ed0310813709cd0690d6838917fe82
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 10:34:37 2007 -0700
-
- x86-64: add CONFIG_PHYSICAL_ALIGN to match i386
-
- Add CONFIG_PHYSICAL_ALIGN to match i386, even though we don't use it.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 8f5d14d11a7318e257351ae477392c7f7e314602
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 10:33:54 2007 -0700
-
- x86 setup: cleanups for compatibility with x86-64
-
- These changes are necessary to compile on x86-64.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit a32f68b6d4023c1c6b1e62e8561189516c571ab9
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Fri May 4 08:40:07 2007 -0700
-
- x86 setup: add missing linker script
-
- Add linker script for the setup code, apparently missing from previous
- checkins.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 4f34ca8e926b2d0bf3a7502b99f8dfced8cdba9d
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 3 17:42:29 2007 -0700
-
- x86 setup: paranoia: clear the high half of %esp
-
- We're invoked in 16-bit mode from an unknown bootloader. Make sure
- we explicitly zero the upper half of %esp to avoid nasty surprises.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 19eb9b73cc1632a923003a002108b242af7a6080
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 3 17:35:41 2007 -0700
-
- x86 setup: bootlin is *so* dead...
-
- Bootlin was never able to load bzImage kernels, so who cares about it.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 3b9fb73c65151ee043bc74c333d9e3c9b1872125
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 3 10:56:40 2007 -0700
-
- x86 setup: apparently $(src) is insufficient, needs $(srctree)/$(src)
-
- For some unfanthomable reason the location of the source tree that
- corresponds to the current directory has to be written as
- $(srctree)/$(src) apparently. There might be a good reason for it,
- but shorthand would be appreciated, and $(src) really should be the
- short form.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit a6d01d375a2269be1e3a6b31bcc4d426ad5a473d
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 3 10:51:45 2007 -0700
-
- x86 setup: remove reference to obsolete cpureq.c
-
- cpureq.c has been removed; remove it from the Makefile too.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit cbe5b7585d800435080bcbf1b1fd242926982674
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 3 10:33:12 2007 -0700
-
- x86 setup: use the required masks from <asm/required-features.h>
-
- Use the now-uniform features from <asm/required-features.h>.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 99ed30180ecc1bb4e93f6edda5f6bad1adf3e630
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 3 10:31:12 2007 -0700
-
- x86: make the handling of required features consistent
-
- Make the handling of required features consistent between i386
- and x86-64.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 1120d70a2be8f2deb6bda64047da288d8f86dad3
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 3 00:09:53 2007 -0700
-
- x86: Kconfig.cpu: the minimum CPU model is always 3; WP_WORKS_OK = i486
-
- The minimum CPU model number is always 3 (i386), and if we have
- WP_WORKS_OK it means we need an i486.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit ebc308c204149b86984ae2216f5b9b2e63932028
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Thu May 3 00:08:48 2007 -0700
-
- x86 setup: use CONFIG_X86_MINIMUM_CPU_MODEL
-
- Use CONFIG_X86_MINIMUM_CPU_MODEL as defined in Kconfig.cpu.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 8b50b640e015bf5d0f65502437da6fcab46c391b
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 23:45:42 2007 -0700
-
- x86 setup: remove bogus "static"
-
- Remove invalid "static" declarations in cpu.c
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 35d23b60dfb110da81c24bcbfcda089cfc4fd264
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 23:37:50 2007 -0700
-
- x86 setup: cpu detection cleanups
-
- - Use <asm/processor-flags.h>
- - Make sure %cr0 isn't in a dangerous configuration before probing the FPU
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit a1150a03247b355d11a4bb696b8aae1f46612992
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 23:36:55 2007 -0700
-
- x86 setup: compile with -DSETUP
-
- Define SETUP to make it easier to share code with the rest of the kernel.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 7eb52e8ad1bdf01886023d1a13b3313084cd7db6
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 23:34:57 2007 -0700
-
- x86 setup: remove unused verify_cpu.S
-
- verify_cpu.S is obsoleted by boot/cpu.c.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit e90317a027c30176968220d18eb18bd6a9d9cc74
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 20:07:43 2007 -0700
-
- x86 setup: files missing from previous checkin (cpu.c, cpureq.c)
-
- These files were missing from a previous checkin; CPU feature-checking
- code and the list of CPU features to check for.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 060f9b3db33c67b5344b2b4110bc823eb776e5cd
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 19:51:34 2007 -0700
-
- x86 setup: whitespace cleanup
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 9f997a5569ec8fceaa15c2e9cf28e728e2ce118d
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 19:07:14 2007 -0700
-
- x86 setup: add CPU feature detect/abort on insufficient featurage
-
- The x86 setup is the right place to check features and abort if they
- are not present, since we can still get a message to the user via the
- firmware.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit de4e976376fddec340651ef40b16a45f6189619d
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 19:05:34 2007 -0700
-
- x86 setup: whitespace cleanup
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit bcd2d2f8de5d4568b6628aa133fce1ac40ece526
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 16:19:59 2007 -0700
-
- x86 setup: tag functions noreturn; error message on A20 failure
-
- Tag appropriate functions noreturn.
- If the A20 gate fails, output an error message and refuse to boot.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 752aef90cbfc888084bf11fd83f8f72b6a668fc9
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 15:45:08 2007 -0700
-
- x86 setup: clobber registers in keyboard BIOS call
-
- Keyboard BIOS call to set repeat rate is known to clobber registers on
- "many" BIOSes.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit dde94003e4759aab275732cf9f1834440cd381d0
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 15:44:21 2007 -0700
-
- x86 setup: implement APM BIOS probe
-
- APM BIOS probe ported from assembly
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 9403917d79e3349184318704476fa080836bd52c
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 15:17:14 2007 -0700
-
- x86 setup: remove references to obsolete probes
-
- Remove "Hello, World!" as well as references to probes which are no
- longer used...
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 712f65ffbd1d4b55b4c55d68b4dcd32406c28fb8
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 12:17:15 2007 -0700
-
- x86 setup: video.c: correct the handling of special mode numbers
-
- Special mode numbers with the high bit set need to be handled *before*
- masking out the high bit.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 9cf083204fe14cda3b09840eba8d131d2e48ccdf
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 11:44:16 2007 -0700
-
- x86 setup: Modern ATI cards pass the probe but lacks the modes.
-
- It appears modern ATI cards pass the probe for ATI-ness but lack the
- modes. Kill off the driver as being incorrect.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 890cbe950589e30af17eac9da800efc76e35e01d
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 11:32:21 2007 -0700
-
- x86 setup: a20.c: make empty_8042() return status
-
- Make functions which could reasonably return status do so. It may
- be relevant in the future, and it's a lot better if the programmer
- doesn't have to figure out where everything should hook in.
-
- Just on principle.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 08a44dc655e0086d23fc3c70cb93eb51eaeec259
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 11:31:03 2007 -0700
-
- x86 setup: video.c: clean up unused stuff
-
- Clean up unused variables that we have no intent on using, as well
- as other cruft.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 57e69acff1f577de430cae1523fd49a5d113e885
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 11:18:13 2007 -0700
-
- x86 setup: drop video mode range checking
-
- Drop video mode range checking. If someone really has, say, 12x40 mode
- visible through the BIOS then allow them to select it... odds are low
- that it will actually conflict with the very sparse allocation we have
- anyway.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit c0dda0b90f92d43872d55d295630a71cd357cfa6
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 11:15:53 2007 -0700
-
- x86 setup: if no specific video mode ID is given, generate one
-
- If we don't specify a certain video mode ID in the driver, then
- generate the 0xRRCC mode ID automatically.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 0db5086e79810e7c5d560006b1c9a7501a02d80c
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 11:10:28 2007 -0700
-
- x86 setup: Sadly, Cirrus removed extended text modes from their BIOS.
-
- In the later era of the Cirrus 54xx series, Cirrus removed extended text
- modes from their BIOS. Neither Qemu nor Bochs implement them in the BIOS.
- If we can find a direct-register-poking method of setting them that
- works in Bochs/Qemu it might be worthwhile to resurrect this; the probing
- routine *does* work.
-
- Of course, the Right Thing[TM] would be to submit such a routine to the
- Bochs/Qemu BIOS as a VESA text mode.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 41f3fddeeb764687bf3fb0cf77fd858128571d58
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Wed May 2 10:18:07 2007 -0700
-
- x86 setup: remove assembly implementation of putchar and puts
-
- Already unused, remove assembly implementation of putchar and puts.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit dfa94cd86aca2c01d2f5e14b6e7c3e8258276195
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 1 21:41:28 2007 -0700
-
- x86 setup: Call INT 15h AX=E820h properly
-
- The calling convention for BIOS call 15:E820 was messed up.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 2487575a36435c0a983febbb4f3751331bd2df7a
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 1 21:34:12 2007 -0700
-
- x86 setup: advance one e820 descriptor at a time...
-
- Adding sizeof(foo) to a foo * is not just useless, it's pretty damaging...
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 530d4f4f1732335ae8725c0b8c332a618e63ea1d
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 1 21:33:28 2007 -0700
-
- x86 setup: fix memcmp_[fg]s()
-
- Actually return a value from memcmp_[fg]s()...
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 8617cd56ff2e43303147da012b26c9dd46af726e
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 1 21:32:47 2007 -0700
-
- x86 setup: fix missing semicolon in video-ati.c
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 7bbf7fa3e199b9cef4877c5a56128faff8636cc9
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 1 21:26:48 2007 -0700
-
- x86 setup: make the video setup code actually do something...
-
- Basic video setup now works (there is still work to be done, however.)
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 45bcd4406e4b812b32d317d9b3b8db2e5f135a3c
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 1 21:25:20 2007 -0700
-
- x86 setup: segment descriptors need to be Present
-
- The segment descriptors were missing the Present bit.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit a39479d4ccf4dceffb623ad2ec7e2d708c38c637
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 1 21:24:32 2007 -0700
-
- build: setup sectors doesn't include the boot sector
-
- The "setup sectors" field doesn't include the old boot sector,
- even though the two are now one module.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit d8f3d4928ead72e8febe2fcd740d0fee71a61f42
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 1 21:23:44 2007 -0700
-
- x86 setup: in tty.c, actually tell it what character to print
-
- putchar() was missing the actual passing of the character code to the
- BIOS call, with very silly-looking results.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 4f1462ed0377e180484a223e622d62432baa64b7
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Tue May 1 21:22:46 2007 -0700
-
- x86 setup: printf.c needs code16gcc.h
-
- printf.c was missing code16gcc.h, with predictable consequences.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit a5ba7e6df198bd204b0f87fc6e3f68388b9d14c1
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Mon Apr 30 20:56:42 2007 -0700
-
- MAINTAINERS: formally take responsibility for the i386 boot code
-
- Change MAINTAINERS to formally take responsibility for the i386 boot code.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-
-commit 6c821fc005655a99eff6e86c2e4b13654de94dea
-Author: H. Peter Anvin <hpa@zytor.com>
-Date: Mon Apr 30 20:54:07 2007 -0700
-
- x86 setup code rewrite: initial development snapshot
-
- Clean up the setup code and rewrite it in C.
- This is an initial development snapshot, not a working tree.
-
- Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
----
-
- MAINTAINERS | 4
- arch/i386/Kconfig.cpu | 4
- arch/i386/boot/Makefile | 45
- arch/i386/boot/a20.c | 161 +
- arch/i386/boot/apm.c | 97
- arch/i386/boot/bitops.h | 45
- arch/i386/boot/boot.h | 290 ++
- arch/i386/boot/bootsect.S | 98
- arch/i386/boot/cmdline.c | 97
- arch/i386/boot/code16gcc.h | 9
- arch/i386/boot/compressed/Makefile | 7
- arch/i386/boot/compressed/head.S | 6
- arch/i386/boot/compressed/misc.c | 3
- arch/i386/boot/copy.S | 101
- arch/i386/boot/cpu.c | 69
- arch/i386/boot/cpucheck.c | 266 ++
- arch/i386/boot/edd.S | 231 --
- arch/i386/boot/edd.c | 196 +
- arch/i386/boot/header.S | 283 ++
- arch/i386/boot/main.c | 161 +
- arch/i386/boot/mca.c | 43
- arch/i386/boot/memory.c | 99
- arch/i386/boot/pm.c | 170 +
- arch/i386/boot/pmjump.S | 54
- arch/i386/boot/printf.c | 331 ++
- arch/i386/boot/setup.S | 1075 ---------
- arch/i386/boot/setup.ld | 54
- arch/i386/boot/string.c | 34
- arch/i386/boot/tools/build.c | 156 -
- arch/i386/boot/tty.c | 112
- arch/i386/boot/version.c | 23
- arch/i386/boot/vesa.h | 79
- arch/i386/boot/video-bios.c | 125 +
- arch/i386/boot/video-vesa.c | 283 ++
- arch/i386/boot/video-vga.c | 260 ++
- arch/i386/boot/video.S | 2043 ------------------
- arch/i386/boot/video.c | 456 ++++
- arch/i386/boot/video.h | 145 +
- arch/i386/boot/voyager.c | 46
- arch/i386/kernel/cpu/addon_cpuid_features.c | 50
- arch/i386/kernel/cpu/common.c | 2
- arch/i386/kernel/cpu/proc.c | 21
- arch/i386/kernel/e820.c | 2
- arch/i386/kernel/setup.c | 12
- arch/i386/kernel/verify_cpu.S | 94
- arch/x86_64/Kconfig | 4
- arch/x86_64/boot/Makefile | 136 -
- arch/x86_64/boot/bootsect.S | 98
- arch/x86_64/boot/compressed/Makefile | 9
- arch/x86_64/boot/compressed/head.S | 6
- arch/x86_64/boot/install.sh | 2
- arch/x86_64/boot/mtools.conf.in | 17
- arch/x86_64/boot/setup.S | 826 -------
- arch/x86_64/boot/tools/build.c | 185 -
- arch/x86_64/kernel/Makefile | 2
- arch/x86_64/kernel/setup.c | 21
- arch/x86_64/kernel/verify_cpu.S | 22
- drivers/ide/legacy/hd.c | 73
- include/asm-i386/boot.h | 6
- include/asm-i386/bootparam.h | 85
- include/asm-i386/cpufeature.h | 26
- include/asm-i386/e820.h | 14
- include/asm-i386/processor.h | 1
- include/asm-i386/required-features.h | 37
- include/asm-i386/setup.h | 10
- include/asm-x86_64/alternative.h | 68
- include/asm-x86_64/boot.h | 16
- include/asm-x86_64/bootparam.h | 1
- include/asm-x86_64/cpufeature.h | 115 -
- include/asm-x86_64/e820.h | 6
- include/asm-x86_64/processor.h | 3
- include/asm-x86_64/required-features.h | 46
- include/asm-x86_64/segment.h | 8
- include/linux/edd.h | 4
- include/linux/screen_info.h | 9
- 75 files changed, 4594 insertions(+), 5204 deletions(-)
-
-diff -puN MAINTAINERS~git-newsetup MAINTAINERS
---- a/MAINTAINERS~git-newsetup
-+++ a/MAINTAINERS
-@@ -1774,8 +1774,8 @@ T: http://www.harbaum.org/till/i2c_tiny_
- S: Maintained
-
- i386 BOOT CODE
--P: Riley H. Williams
--M: Riley@Williams.Name
-+P: H. Peter Anvin
-+M: hpa@zytor.com
- L: Linux-Kernel@vger.kernel.org
- S: Maintained
-
-diff -puN arch/i386/Kconfig.cpu~git-newsetup arch/i386/Kconfig.cpu
---- a/arch/i386/Kconfig.cpu~git-newsetup
-+++ a/arch/i386/Kconfig.cpu
-@@ -346,6 +346,6 @@ config X86_CMOV
-
- config X86_MINIMUM_CPU_MODEL
- int
-- default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP
-- default "0"
-+ default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK
-+ default "3"
-
-diff -puN arch/i386/boot/Makefile~git-newsetup arch/i386/boot/Makefile
---- a/arch/i386/boot/Makefile~git-newsetup
-+++ a/arch/i386/boot/Makefile
-@@ -25,27 +25,53 @@ SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
-
- #RAMDISK := -DRAMDISK=512
-
--targets := vmlinux.bin bootsect bootsect.o \
-- setup setup.o zImage bzImage
-+targets := vmlinux.bin setup.bin setup.elf zImage bzImage
- subdir- := compressed
-
-+setup-y += a20.o apm.o cmdline.o copy.o cpu.o cpucheck.o edd.o
-+setup-y += header.o main.o mca.o memory.o pm.o pmjump.o
-+setup-y += printf.o string.o tty.o video.o version.o voyager.o
-+
-+# The link order of the video-*.o modules can matter. In particular,
-+# video-vga.o *must* be listed first, followed by video-vesa.o.
-+# Hardware-specific drivers should follow in the order they should be
-+# probed, and video-bios.o should typically be last.
-+setup-y += video-vga.o
-+setup-y += video-vesa.o
-+setup-y += video-bios.o
-+
- hostprogs-y := tools/build
-
- HOSTCFLAGS_build.o := $(LINUXINCLUDE)
-
- # ---------------------------------------------------------------------------
-
-+# How to compile the 16-bit code. Note we always compile for -march=i386,
-+# that way we can complain to the user if the CPU is insufficient.
-+cflags-i386 :=
-+cflags-x86_64 := -m32
-+CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
-+ $(cflags-$(ARCH)) \
-+ -Wall -Wstrict-prototypes \
-+ -march=i386 -mregparm=3 \
-+ -include $(srctree)/$(src)/code16gcc.h \
-+ -fno-strict-aliasing -fomit-frame-pointer \
-+ $(call cc-option, -ffreestanding) \
-+ $(call cc-option, -fno-stack-protector)
-+AFLAGS := $(CFLAGS) -D__ASSEMBLY__
-+
- $(obj)/zImage: IMAGE_OFFSET := 0x1000
- $(obj)/zImage: EXTRA_AFLAGS := $(SVGA_MODE) $(RAMDISK)
- $(obj)/bzImage: IMAGE_OFFSET := 0x100000
-+$(obj)/bzImage: EXTRA_CFLAGS := -D__BIG_KERNEL__
- $(obj)/bzImage: EXTRA_AFLAGS := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__
- $(obj)/bzImage: BUILDFLAGS := -b
-
- quiet_cmd_image = BUILD $@
--cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/bootsect $(obj)/setup \
-+cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/setup.bin \
- $(obj)/vmlinux.bin $(ROOT_DEV) > $@
-
--$(obj)/zImage $(obj)/bzImage: $(obj)/bootsect $(obj)/setup \
-+$(obj)/zImage $(obj)/bzImage: $(obj)/setup.bin \
- $(obj)/vmlinux.bin $(obj)/tools/build FORCE
- $(call if_changed,image)
- @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
-@@ -53,12 +79,17 @@ $(obj)/zImage $(obj)/bzImage: $(obj)/boo
- $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
- $(call if_changed,objcopy)
-
--LDFLAGS_bootsect := -Ttext 0x0 -s --oformat binary
--LDFLAGS_setup := -Ttext 0x0 -s --oformat binary -e begtext
-+SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
-
--$(obj)/setup $(obj)/bootsect: %: %.o FORCE
-+LDFLAGS_setup.elf := -T
-+$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
- $(call if_changed,ld)
-
-+OBJCOPYFLAGS_setup.bin := -O binary
-+
-+$(obj)/setup.bin: $(obj)/setup.elf FORCE
-+ $(call if_changed,objcopy)
-+
- $(obj)/compressed/vmlinux: FORCE
- $(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
-
-diff -puN /dev/null arch/i386/boot/a20.c
---- /dev/null
-+++ a/arch/i386/boot/a20.c
-@@ -0,0 +1,161 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/a20.c
-+ *
-+ * Enable A20 gate (return -1 on failure)
-+ */
-+
-+#include "boot.h"
-+
-+#define MAX_8042_LOOPS 100000
-+
-+static int empty_8042(void)
-+{
-+ u8 status;
-+ int loops = MAX_8042_LOOPS;
-+
-+ while (loops--) {
-+ io_delay();
-+
-+ status = inb(0x64);
-+ if (status & 1) {
-+ /* Read and discard input data */
-+ io_delay();
-+ (void)inb(0x60);
-+ } else if (!(status & 2)) {
-+ /* Buffers empty, finished! */
-+ return 0;
-+ }
-+ }
-+
-+ return -1;
-+}
-+
-+/* Returns nonzero if the A20 line is enabled. The memory address
-+ used as a test is the int $0x80 vector, which should be safe. */
-+
-+#define A20_TEST_ADDR (4*0x80)
-+#define A20_TEST_SHORT 32
-+#define A20_TEST_LONG 2097152 /* 2^21 */
-+
-+static int a20_test(int loops)
-+{
-+ int ok = 0;
-+ int saved, ctr;
-+
-+ set_fs(0x0000);
-+ set_gs(0xffff);
-+
-+ saved = ctr = rdfs32(A20_TEST_ADDR);
-+
-+ while (loops--) {
-+ wrfs32(++ctr, A20_TEST_ADDR);
-+ io_delay(); /* Serialize and make delay constant */
-+ ok = rdgs32(A20_TEST_ADDR+0x10) ^ ctr;
-+ if (ok)
-+ break;
-+ }
-+
-+ wrfs32(saved, A20_TEST_ADDR);
-+ return ok;
-+}
-+
-+/* Quick test to see if A20 is already enabled */
-+static int a20_test_short(void)
-+{
-+ return a20_test(A20_TEST_SHORT);
-+}
-+
-+/* Longer test that actually waits for A20 to come on line; this
-+ is useful when dealing with the KBC or other slow external circuitry. */
-+static int a20_test_long(void)
-+{
-+ return a20_test(A20_TEST_LONG);
-+}
-+
-+static void enable_a20_bios(void)
-+{
-+ asm volatile("pushfl; int $0x15; popfl"
-+ : : "a" ((u16)0x2401));
-+}
-+
-+static void enable_a20_kbc(void)
-+{
-+ empty_8042();
-+
-+ outb(0xd1, 0x64); /* Command write */
-+ empty_8042();
-+
-+ outb(0xdf, 0x60); /* A20 on */
-+ empty_8042();
-+}
-+
-+static void enable_a20_fast(void)
-+{
-+ u8 port_a;
-+
-+ port_a = inb(0x92); /* Configuration port A */
-+ port_a |= 0x02; /* Enable A20 */
-+ port_a &= ~0x01; /* Do not reset machine */
-+ outb(port_a, 0x92);
-+}
-+
-+/*
-+ * Actual routine to enable A20; return 0 on ok, -1 on failure
-+ */
-+
-+#define A20_ENABLE_LOOPS 255 /* Number of times to try */
-+
-+int enable_a20(void)
-+{
-+ int loops = A20_ENABLE_LOOPS;
-+
-+#if defined(CONFIG_X86_ELAN)
-+ /* Elan croaks if we try to touch the KBC */
-+ enable_a20_fast();
-+ while (!a20_test_long())
-+ ;
-+ return 0;
-+#elif defined(CONFIG_X86_VOYAGER)
-+ /* On Voyager, a20_test() is unsafe? */
-+ enable_a20_kbc();
-+ return 0;
-+#else
-+ while (loops--) {
-+ /* First, check to see if A20 is already enabled
-+ (legacy free, etc.) */
-+ if (a20_test_short())
-+ return 0;
-+
-+ /* Next, try the BIOS (INT 0x15, AX=0x2401) */
-+ enable_a20_bios();
-+ if (a20_test_short())
-+ return 0;
-+
-+ /* Try enabling A20 through the keyboard controller */
-+ empty_8042();
-+ if (a20_test_short())
-+ return 0; /* BIOS worked, but with delayed reaction */
-+
-+ enable_a20_kbc();
-+ if (a20_test_long())
-+ return 0;
-+
-+ /* Finally, try enabling the "fast A20 gate" */
-+ enable_a20_fast();
-+ if (a20_test_long())
-+ return 0;
-+ }
-+
-+ return -1;
-+#endif
-+}
-diff -puN /dev/null arch/i386/boot/apm.c
---- /dev/null
-+++ a/arch/i386/boot/apm.c
-@@ -0,0 +1,97 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * Original APM BIOS checking by Stephen Rothwell, May 1994
-+ * (sfr@canb.auug.org.au)
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/apm.c
-+ *
-+ * Get APM BIOS information
-+ */
-+
-+#include "boot.h"
-+
-+#if defined(CONFIG_APM) || defined(CONFIG_APM_MODULE)
-+
-+int query_apm_bios(void)
-+{
-+ u16 ax, bx, cx, dx, di;
-+ u32 ebx, esi;
-+ u8 err;
-+
-+ /* APM BIOS installation check */
-+ ax = 0x5300;
-+ bx = cx = 0;
-+ asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp ; setc %0"
-+ : "=d" (err), "+a" (ax), "+b" (bx), "+c" (cx)
-+ : : "esi", "edi");
-+
-+ if (err)
-+ return -1; /* No APM BIOS */
-+
-+ if (bx != 0x504d) /* "PM" signature */
-+ return -1;
-+
-+ if (cx & 0x02) /* 32 bits supported? */
-+ return -1;
-+
-+ /* Disconnect first, just in case */
-+ ax = 0x5304;
-+ asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp"
-+ : "+a" (ax)
-+ : : "ebx", "ecx", "edx", "esi", "edi");
-+
-+ /* Paranoia */
-+ ebx = esi = 0;
-+ cx = dx = di = 0;
-+
-+ /* 32-bit connect */
-+ asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp ; setc %6"
-+ : "=a" (ax), "+b" (ebx), "+c" (cx), "+d" (dx),
-+ "+S" (esi), "+D" (di), "=m" (err)
-+ : "a" (0x5303));
-+
-+ boot_params.apm_bios_info.cseg = ax;
-+ boot_params.apm_bios_info.offset = ebx;
-+ boot_params.apm_bios_info.cseg_16 = cx;
-+ boot_params.apm_bios_info.dseg = dx;
-+ boot_params.apm_bios_info.cseg_len = (u16)esi;
-+ boot_params.apm_bios_info.cseg_16_len = esi >> 16;
-+ boot_params.apm_bios_info.dseg_len = di;
-+
-+ if (err)
-+ return -1;
-+
-+ /* Redo the installation check as the 32-bit connect;
-+ some BIOSes return different flags this way... */
-+
-+ ax = 0x5300;
-+ bx = cx = 0;
-+ asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp ; setc %0"
-+ : "=d" (err), "+a" (ax), "+b" (bx), "+c" (cx)
-+ : : "esi", "edi");
-+
-+ if (err || bx != 0x504d) {
-+ /* Failure with 32-bit connect, try to disconect and ignore */
-+ ax = 0x5304;
-+ bx = 0;
-+ asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp"
-+ : "+a" (ax), "+b" (bx)
-+ : : "ecx", "edx", "esi", "edi");
-+ return -1;
-+ }
-+
-+ boot_params.apm_bios_info.version = ax;
-+ boot_params.apm_bios_info.flags = cx;
-+ return 0;
-+}
-+
-+#endif
-diff -puN /dev/null arch/i386/boot/bitops.h
---- /dev/null
-+++ a/arch/i386/boot/bitops.h
-@@ -0,0 +1,45 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/bitops.h
-+ *
-+ * Very simple bitops for the boot code.
-+ */
-+
-+#ifndef BOOT_BITOPS_H
-+#define BOOT_BITOPS_H
-+#define _LINUX_BITOPS_H /* Inhibit inclusion of <linux/bitops.h> */
-+
-+static inline int constant_test_bit(int nr, const void *addr)
-+{
-+ const u32 *p = (const u32 *)addr;
-+ return ((1UL << (nr & 31)) & (p[nr >> 5])) != 0;
-+}
-+static inline int variable_test_bit(int nr, const void *addr)
-+{
-+ u8 v;
-+ const u32 *p = (const u32 *)addr;
-+
-+ asm("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr));
-+ return v;
-+}
-+
-+#define test_bit(nr,addr) \
-+(__builtin_constant_p(nr) ? \
-+ constant_test_bit((nr),(addr)) : \
-+ variable_test_bit((nr),(addr)))
-+
-+static inline void set_bit(int nr, void *addr)
-+{
-+ asm("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr));
-+}
-+
-+#endif /* BOOT_BITOPS_H */
-diff -puN /dev/null arch/i386/boot/boot.h
---- /dev/null
-+++ a/arch/i386/boot/boot.h
-@@ -0,0 +1,290 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/boot.h
-+ *
-+ * Header file for the real-mode kernel code
-+ */
-+
-+#ifndef BOOT_BOOT_H
-+#define BOOT_BOOT_H
-+
-+#ifndef __ASSEMBLY__
-+
-+#include <stdarg.h>
-+#include <linux/types.h>
-+#include <linux/edd.h>
-+#include <asm/boot.h>
-+#include <asm/bootparam.h>
-+
-+/* Useful macros */
-+#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
-+
-+extern struct setup_header hdr;
-+extern struct boot_params boot_params;
-+
-+/* Basic port I/O */
-+static inline void outb(u8 v, u16 port)
-+{
-+ asm volatile("outb %0,%1" : : "a" (v), "dN" (port));
-+}
-+static inline u8 inb(u16 port)
-+{
-+ u8 v;
-+ asm volatile("inb %1,%0" : "=a" (v) : "dN" (port));
-+ return v;
-+}
-+
-+static inline void outw(u16 v, u16 port)
-+{
-+ asm volatile("outw %0,%1" : : "a" (v), "dN" (port));
-+}
-+static inline u16 inw(u16 port)
-+{
-+ u16 v;
-+ asm volatile("inw %1,%0" : "=a" (v) : "dN" (port));
-+ return v;
-+}
-+
-+static inline void outl(u32 v, u16 port)
-+{
-+ asm volatile("outl %0,%1" : : "a" (v), "dn" (port));
-+}
-+static inline u32 inl(u32 port)
-+{
-+ u32 v;
-+ asm volatile("inl %1,%0" : "=a" (v) : "dN" (port));
-+ return v;
-+}
-+
-+static inline void io_delay(void)
-+{
-+ const u16 DELAY_PORT = 0x80;
-+ asm volatile("outb %%al,%0" : : "dN" (DELAY_PORT));
-+}
-+
-+/* These functions are used to reference data in other segments. */
-+
-+static inline u16 ds(void)
-+{
-+ u16 seg;
-+ asm("movw %%ds,%0" : "=rm" (seg));
-+ return seg;
-+}
-+
-+static inline void set_fs(u16 seg)
-+{
-+ asm volatile("movw %0,%%fs" : : "rm" (seg));
-+}
-+static inline u16 fs(void)
-+{
-+ u16 seg;
-+ asm("movw %%fs,%0" : "=rm" (seg));
-+ return seg;
-+}
-+
-+static inline void set_gs(u16 seg)
-+{
-+ asm volatile("movw %0,%%gs" : : "rm" (seg));
-+}
-+static inline u16 gs(void)
-+{
-+ u16 seg;
-+ asm("movw %%gs,%0" : "=rm" (seg));
-+ return seg;
-+}
-+
-+typedef unsigned int addr_t;
-+
-+static inline u8 rdfs8(addr_t addr)
-+{
-+ u8 v;
-+ asm("movb %%fs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
-+ return v;
-+}
-+static inline u16 rdfs16(addr_t addr)
-+{
-+ u16 v;
-+ asm("movw %%fs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
-+ return v;
-+}
-+static inline u32 rdfs32(addr_t addr)
-+{
-+ u32 v;
-+ asm("movl %%fs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
-+ return v;
-+}
-+
-+static inline void wrfs8(u8 v, addr_t addr)
-+{
-+ asm volatile("movb %1,%%fs:%0" : "+m" (*(u8 *)addr) : "r" (v));
-+}
-+static inline void wrfs16(u16 v, addr_t addr)
-+{
-+ asm volatile("movw %1,%%fs:%0" : "+m" (*(u16 *)addr) : "r" (v));
-+}
-+static inline void wrfs32(u32 v, addr_t addr)
-+{
-+ asm volatile("movl %1,%%fs:%0" : "+m" (*(u32 *)addr) : "r" (v));
-+}
-+
-+static inline u8 rdgs8(addr_t addr)
-+{
-+ u8 v;
-+ asm("movb %%gs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
-+ return v;
-+}
-+static inline u16 rdgs16(addr_t addr)
-+{
-+ u16 v;
-+ asm("movw %%gs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
-+ return v;
-+}
-+static inline u32 rdgs32(addr_t addr)
-+{
-+ u32 v;
-+ asm("movl %%gs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
-+ return v;
-+}
-+
-+static inline void wrgs8(u8 v, addr_t addr)
-+{
-+ asm volatile("movb %1,%%gs:%0" : "+m" (*(u8 *)addr) : "r" (v));
-+}
-+static inline void wrgs16(u16 v, addr_t addr)
-+{
-+ asm volatile("movw %1,%%gs:%0" : "+m" (*(u16 *)addr) : "r" (v));
-+}
-+static inline void wrgs32(u32 v, addr_t addr)
-+{
-+ asm volatile("movl %1,%%gs:%0" : "+m" (*(u32 *)addr) : "r" (v));
-+}
-+
-+/* Note: these only return true/false, not a signed return value! */
-+static inline int memcmp(const void *s1, const void *s2, size_t len)
-+{
-+ u8 diff;
-+ asm("repe; cmpsb; setnz %0"
-+ : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
-+ return diff;
-+}
-+
-+static inline int memcmp_fs(const void *s1, addr_t s2, size_t len)
-+{
-+ u8 diff;
-+ asm("fs; repe; cmpsb; setnz %0"
-+ : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
-+ return diff;
-+}
-+static inline int memcmp_gs(const void *s1, addr_t s2, size_t len)
-+{
-+ u8 diff;
-+ asm("gs; repe; cmpsb; setnz %0"
-+ : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
-+ return diff;
-+}
-+
-+/* Heap -- available for dynamic lists. */
-+#define STACK_SIZE 512 /* Minimum number of bytes for stack */
-+
-+extern char _end[];
-+extern char *HEAP;
-+extern char *heap_end;
-+#define RESET_HEAP() ((void *)( HEAP = _end ))
-+static inline char *__get_heap(size_t s, size_t a, size_t n)
-+{
-+ char *tmp;
-+
-+ HEAP = (char *)(((size_t)HEAP+(a-1)) & ~(a-1));
-+ tmp = HEAP;
-+ HEAP += s*n;
-+ return tmp;
-+}
-+#define GET_HEAP(type, n) \
-+ ((type *)__get_heap(sizeof(type),__alignof__(type),(n)))
-+
-+static inline int heap_free(void)
-+{
-+ return heap_end-HEAP;
-+}
-+
-+/* copy.S */
-+
-+void copy_to_fs(addr_t dst, void *src, size_t len);
-+void *copy_from_fs(void *dst, addr_t src, size_t len);
-+void copy_to_gs(addr_t dst, void *src, size_t len);
-+void *copy_from_gs(void *dst, addr_t src, size_t len);
-+void *memcpy(void *dst, void *src, size_t len);
-+void *memset(void *dst, int c, size_t len);
-+
-+#define memcpy(d,s,l) __builtin_memcpy(d,s,l)
-+#define memset(d,c,l) __builtin_memset(d,c,l)
-+
-+/* a20.c */
-+int enable_a20(void);
-+
-+/* apm.c */
-+int query_apm_bios(void);
-+
-+/* cmdline.c */
-+int cmdline_find_option(const char *option, char *buffer, int bufsize);
-+
-+/* cpu.c, cpucheck.c */
-+int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr);
-+int validate_cpu(void);
-+
-+/* edd.c */
-+void query_edd(void);
-+
-+/* header.S */
-+void __attribute__((noreturn)) die(void);
-+
-+/* mca.c */
-+int query_mca(void);
-+
-+/* memory.c */
-+int detect_memory(void);
-+
-+/* pm.c */
-+void __attribute__((noreturn)) go_to_protected_mode(void);
-+
-+/* pmjump.S */
-+void __attribute__((noreturn))
-+ protected_mode_jump(u32 entrypoint, u32 bootparams);
-+
-+/* printf.c */
-+unsigned int atou(const char *s);
-+int sprintf(char *buf, const char *fmt, ...);
-+int vsprintf(char *buf, const char *fmt, va_list args);
-+int printf(const char *fmt, ...);
-+
-+/* string.c */
-+int strcmp(const char *str1, const char *str2);
-+
-+/* tty.c */
-+void puts(const char *);
-+void putchar(int);
-+int getchar(void);
-+void kbd_flush(void);
-+int getchar_timeout(void);
-+
-+/* video.c */
-+void set_video(void);
-+
-+/* video-vesa.c */
-+void vesa_store_edid(void);
-+
-+/* voyager.c */
-+int query_voyager(void);
-+
-+#endif /* __ASSEMBLY__ */
-+
-+#endif /* BOOT_BOOT_H */
-diff -puN arch/i386/boot/bootsect.S~git-newsetup /dev/null
---- a/arch/i386/boot/bootsect.S
-+++ /dev/null
-@@ -1,98 +0,0 @@
--/*
-- * bootsect.S Copyright (C) 1991, 1992 Linus Torvalds
-- *
-- * modified by Drew Eckhardt
-- * modified by Bruce Evans (bde)
-- * modified by Chris Noe (May 1999) (as86 -> gas)
-- * gutted by H. Peter Anvin (Jan 2003)
-- *
-- * BIG FAT NOTE: We're in real mode using 64k segments. Therefore segment
-- * addresses must be multiplied by 16 to obtain their respective linear
-- * addresses. To avoid confusion, linear addresses are written using leading
-- * hex while segment addresses are written as segment:offset.
-- *
-- */
--
--#include <asm/boot.h>
--
--SETUPSECTS = 4 /* default nr of setup-sectors */
--BOOTSEG = 0x07C0 /* original address of boot-sector */
--INITSEG = DEF_INITSEG /* we move boot here - out of the way */
--SETUPSEG = DEF_SETUPSEG /* setup starts here */
--SYSSEG = DEF_SYSSEG /* system loaded at 0x10000 (65536) */
--SYSSIZE = DEF_SYSSIZE /* system size: # of 16-byte clicks */
-- /* to be loaded */
--ROOT_DEV = 0 /* ROOT_DEV is now written by "build" */
--SWAP_DEV = 0 /* SWAP_DEV is now written by "build" */
--
--#ifndef SVGA_MODE
--#define SVGA_MODE ASK_VGA
--#endif
--
--#ifndef RAMDISK
--#define RAMDISK 0
--#endif
--
--#ifndef ROOT_RDONLY
--#define ROOT_RDONLY 1
--#endif
--
--.code16
--.text
--
--.global _start
--_start:
--
-- # Normalize the start address
-- jmpl $BOOTSEG, $start2
--
--start2:
-- movw %cs, %ax
-- movw %ax, %ds
-- movw %ax, %es
-- movw %ax, %ss
-- movw $0x7c00, %sp
-- sti
-- cld
--
-- movw $bugger_off_msg, %si
--
--msg_loop:
-- lodsb
-- andb %al, %al
-- jz die
-- movb $0xe, %ah
-- movw $7, %bx
-- int $0x10
-- jmp msg_loop
--
--die:
-- # Allow the user to press a key, then reboot
-- xorw %ax, %ax
-- int $0x16
-- int $0x19
--
-- # int 0x19 should never return. In case it does anyway,
-- # invoke the BIOS reset code...
-- ljmp $0xf000,$0xfff0
--
--
--bugger_off_msg:
-- .ascii "Direct booting from floppy is no longer supported.\r\n"
-- .ascii "Please use a boot loader program instead.\r\n"
-- .ascii "\n"
-- .ascii "Remove disk and press any key to reboot . . .\r\n"
-- .byte 0
--
--
-- # Kernel attributes; used by setup
--
-- .org 497
--setup_sects: .byte SETUPSECTS
--root_flags: .word ROOT_RDONLY
--syssize: .word SYSSIZE
--swap_dev: .word SWAP_DEV
--ram_size: .word RAMDISK
--vid_mode: .word SVGA_MODE
--root_dev: .word ROOT_DEV
--boot_flag: .word 0xAA55
-diff -puN /dev/null arch/i386/boot/cmdline.c
---- /dev/null
-+++ a/arch/i386/boot/cmdline.c
-@@ -0,0 +1,97 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/cmdline.c
-+ *
-+ * Simple command-line parser for early boot.
-+ */
-+
-+#include "boot.h"
-+
-+static inline int myisspace(u8 c)
-+{
-+ return c <= ' '; /* Close enough approximation */
-+}
-+
-+/*
-+ * Find a non-boolean option, that is, "option=argument". In accordance
-+ * with standard Linux practice, if this option is repeated, this returns
-+ * the last instance on the command line.
-+ *
-+ * Returns the length of the argument (regardless of if it was
-+ * truncated to fit in the buffer), or -1 on not found.
-+ */
-+int cmdline_find_option(const char *option, char *buffer, int bufsize)
-+{
-+ u32 cmdline_ptr = boot_params.hdr.cmd_line_ptr;
-+ addr_t cptr;
-+ char c;
-+ int len = -1;
-+ const char *opptr = NULL;
-+ char *bufptr = buffer;
-+ enum {
-+ st_wordstart, /* Start of word/after whitespace */
-+ st_wordcmp, /* Comparing this word */
-+ st_wordskip, /* Miscompare, skip */
-+ st_bufcpy /* Copying this to buffer */
-+ } state = st_wordstart;
-+
-+ if (!cmdline_ptr || cmdline_ptr >= 0x100000)
-+ return -1; /* No command line, or inaccessible */
-+
-+ cptr = cmdline_ptr & 0xf;
-+ set_fs(cmdline_ptr >> 4);
-+
-+ while (cptr < 0x10000 && (c = rdfs8(cptr++))) {
-+ switch (state) {
-+ case st_wordstart:
-+ if (myisspace(c))
-+ break;
-+
-+ /* else */
-+ state = st_wordcmp;
-+ opptr = option;
-+ /* fall through */
-+
-+ case st_wordcmp:
-+ if (c == '=' && !*opptr) {
-+ len = 0;
-+ bufptr = buffer;
-+ state = st_bufcpy;
-+ } else if (myisspace(c)) {
-+ state = st_wordstart;
-+ } else if (c != *opptr++) {
-+ state = st_wordskip;
-+ }
-+ break;
-+
-+ case st_wordskip:
-+ if (myisspace(c))
-+ state = st_wordstart;
-+ break;
-+
-+ case st_bufcpy:
-+ if (myisspace(c)) {
-+ state = st_wordstart;
-+ } else {
-+ if (len < bufsize-1)
-+ *bufptr++ = c;
-+ len++;
-+ }
-+ break;
-+ }
-+ }
-+
-+ if (bufsize)
-+ *bufptr = '\0';
-+
-+ return len;
-+}
-diff -puN /dev/null arch/i386/boot/code16gcc.h
---- /dev/null
-+++ a/arch/i386/boot/code16gcc.h
-@@ -0,0 +1,9 @@
-+/*
-+ * code16gcc.h
-+ *
-+ * This file is -include'd when compiling 16-bit C code.
-+ */
-+
-+#ifndef __ASSEMBLY__
-+asm(".code16gcc");
-+#endif
-diff -puN arch/i386/boot/compressed/Makefile~git-newsetup arch/i386/boot/compressed/Makefile
---- a/arch/i386/boot/compressed/Makefile~git-newsetup
-+++ a/arch/i386/boot/compressed/Makefile
-@@ -9,9 +9,14 @@ targets := vmlinux vmlinux.bin vmlinux.
- EXTRA_AFLAGS := -traditional
-
- LDFLAGS_vmlinux := -T
--CFLAGS_misc.o += -fPIC
- hostprogs-y := relocs
-
-+CFLAGS := -m32 -D__KERNEL__ $(LINUX_INCLUDE) -O2 \
-+ -fno-strict-aliasing -fPIC \
-+ $(call cc-option,-ffreestanding) \
-+ $(call cc-option,-fno-stack-protector)
-+LDFLAGS := -m elf_i386
-+
- $(obj)/vmlinux: $(src)/vmlinux.lds $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o FORCE
- $(call if_changed,ld)
- @:
-diff -puN arch/i386/boot/compressed/head.S~git-newsetup arch/i386/boot/compressed/head.S
---- a/arch/i386/boot/compressed/head.S~git-newsetup
-+++ a/arch/i386/boot/compressed/head.S
-@@ -45,10 +45,10 @@ startup_32:
- * at and where we were actually loaded at. This can only be done
- * with a short local call on x86. Nothing else will tell us what
- * address we are running at. The reserved chunk of the real-mode
-- * data at 0x34-0x3f are used as the stack for this calculation.
-- * Only 4 bytes are needed.
-+ * data at 0x1e4 (defined as a scratch field) are used as the stack
-+ * for this calculation. Only 4 bytes are needed.
- */
-- leal 0x40(%esi), %esp
-+ leal (0x1e4+4)(%esi), %esp
- call 1f
- 1: popl %ebp
- subl $1b, %ebp
-diff -puN arch/i386/boot/compressed/misc.c~git-newsetup arch/i386/boot/compressed/misc.c
---- a/arch/i386/boot/compressed/misc.c~git-newsetup
-+++ a/arch/i386/boot/compressed/misc.c
-@@ -11,7 +11,6 @@
-
- #undef CONFIG_PARAVIRT
- #include <linux/linkage.h>
--#include <linux/vmalloc.h>
- #include <linux/screen_info.h>
- #include <asm/io.h>
- #include <asm/page.h>
-@@ -364,8 +363,10 @@ asmlinkage void decompress_kernel(void *
-
- if ((u32)output & (CONFIG_PHYSICAL_ALIGN -1))
- error("Destination address not CONFIG_PHYSICAL_ALIGN aligned");
-+#ifndef CONFIG_X86_64
- if (end > ((-__PAGE_OFFSET-(512 <<20)-1) & 0x7fffffff))
- error("Destination address too large");
-+#endif
- #ifndef CONFIG_RELOCATABLE
- if ((u32)output != LOAD_PHYSICAL_ADDR)
- error("Wrong destination address");
-diff -puN /dev/null arch/i386/boot/copy.S
---- /dev/null
-+++ a/arch/i386/boot/copy.S
-@@ -0,0 +1,101 @@
-+/* ----------------------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/copy.S
-+ *
-+ * Memory copy routines
-+ */
-+
-+ .code16gcc
-+ .text
-+
-+ .globl memcpy
-+ .type memcpy, @function
-+memcpy:
-+ pushw %si
-+ pushw %di
-+ movw %ax, %di
-+ movw %dx, %si
-+ pushw %cx
-+ shrw $2, %cx
-+ rep; movsl
-+ popw %cx
-+ andw $3, %cx
-+ rep; movsb
-+ popw %di
-+ popw %si
-+ ret
-+ .size memcpy, .-memcpy
-+
-+ .globl memset
-+ .type memset, @function
-+memset:
-+ pushw %di
-+ movw %ax, %di
-+ movzbl %dl, %eax
-+ imull $0x01010101,%eax
-+ pushw %cx
-+ shrw $2, %cx
-+ rep; stosl
-+ popw %cx
-+ andw $3, %cx
-+ rep; stosb
-+ popw %di
-+ ret
-+ .size memset, .-memset
-+
-+ .globl copy_from_fs
-+ .type copy_from_fs, @function
-+copy_from_fs:
-+ pushw %ds
-+ pushw %fs
-+ popw %ds
-+ call memcpy
-+ popw %ds
-+ ret
-+ .size copy_from_fs, .-copy_from_fs
-+
-+ .globl copy_to_fs
-+ .type copy_to_fs, @function
-+copy_to_fs:
-+ pushw %es
-+ pushw %fs
-+ popw %es
-+ call memcpy
-+ popw %es
-+ ret
-+ .size copy_to_fs, .-copy_to_fs
-+
-+#if 0 /* Not currently used, but can be enabled as needed */
-+
-+ .globl copy_from_gs
-+ .type copy_from_gs, @function
-+copy_from_gs:
-+ pushw %ds
-+ pushw %gs
-+ popw %ds
-+ call memcpy
-+ popw %ds
-+ ret
-+ .size copy_from_gs, .-copy_from_gs
-+ .globl copy_to_gs
-+
-+ .type copy_to_gs, @function
-+copy_to_gs:
-+ pushw %es
-+ pushw %gs
-+ popw %es
-+ call memcpy
-+ popw %es
-+ ret
-+ .size copy_to_gs, .-copy_to_gs
-+
-+#endif
-diff -puN /dev/null arch/i386/boot/cpu.c
---- /dev/null
-+++ a/arch/i386/boot/cpu.c
-@@ -0,0 +1,69 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/cpucheck.c
-+ *
-+ * Check for obligatory CPU features and abort if the features are not
-+ * present.
-+ */
-+
-+#include "boot.h"
-+#include "bitops.h"
-+#include <asm/cpufeature.h>
-+
-+static char *cpu_name(int level)
-+{
-+ static char buf[6];
-+
-+ if (level == 64) {
-+ return "x86-64";
-+ } else {
-+ sprintf(buf, "i%d86", level);
-+ return buf;
-+ }
-+}
-+
-+int validate_cpu(void)
-+{
-+ u32 *err_flags;
-+ int cpu_level, req_level;
-+
-+ check_cpu(&cpu_level, &req_level, &err_flags);
-+
-+ if (cpu_level < req_level) {
-+ printf("This kernel requires an %s CPU, ",
-+ cpu_name(req_level));
-+ printf("but only detected an %s CPU.\n",
-+ cpu_name(cpu_level));
-+ return -1;
-+ }
-+
-+ if (err_flags) {
-+ int i, j;
-+ puts("This kernel requires the following features "
-+ "not present on the CPU:\n");
-+
-+ for (i = 0; i < NCAPINTS; i++) {
-+ u32 e = err_flags[i];
-+
-+ for (j = 0; j < 32; j++) {
-+ if (e & 1)
-+ printf("%d:%d ", i, j);
-+
-+ e >>= 1;
-+ }
-+ }
-+ putchar('\n');
-+ return -1;
-+ } else {
-+ return 0;
-+ }
-+}
-diff -puN /dev/null arch/i386/boot/cpucheck.c
---- /dev/null
-+++ a/arch/i386/boot/cpucheck.c
-@@ -0,0 +1,266 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/cpu.c
-+ *
-+ * Check for obligatory CPU features and abort if the features are not
-+ * present. This code should be compilable as 16-, 32- or 64-bit
-+ * code, so be very careful with types and inline assembly.
-+ *
-+ * This code should not contain any messages; that requires an
-+ * additional wrapper.
-+ *
-+ * As written, this code is not safe for inclusion into the kernel
-+ * proper (after FPU initialization, in particular).
-+ */
-+
-+#ifdef _SETUP
-+# include "boot.h"
-+# include "bitops.h"
-+#endif
-+#include <linux/types.h>
-+#include <asm/cpufeature.h>
-+#include <asm/processor-flags.h>
-+#include <asm/required-features.h>
-+#include <asm/msr-index.h>
-+
-+struct cpu_features {
-+ int level;
-+ int model;
-+ u32 flags[NCAPINTS];
-+};
-+
-+static struct cpu_features cpu;
-+static u32 cpu_vendor[3];
-+static u32 err_flags[NCAPINTS];
-+
-+#ifdef CONFIG_X86_64
-+static const int req_level = 64;
-+#elif defined(CONFIG_X86_MINIMUM_CPU_MODEL)
-+static const int req_level = CONFIG_X86_MINIMUM_CPU_MODEL;
-+#else
-+static const int req_level = 3;
-+#endif
-+
-+static const u32 req_flags[NCAPINTS] =
-+{
-+ REQUIRED_MASK0,
-+ REQUIRED_MASK1,
-+ REQUIRED_MASK2,
-+ REQUIRED_MASK3,
-+ REQUIRED_MASK4,
-+ REQUIRED_MASK5,
-+ REQUIRED_MASK6,
-+};
-+
-+#define A32(a,b,c,d) (((d) << 24)+((c) << 16)+((b) << 8)+(a))
-+
-+static int is_amd(void)
-+{
-+ return cpu_vendor[0] == A32('A','u','t','h') &&
-+ cpu_vendor[1] == A32('e','n','t','i') &&
-+ cpu_vendor[2] == A32('c','A','M','D');
-+}
-+
-+static int is_centaur(void)
-+{
-+ return cpu_vendor[0] == A32('C','e','n','t') &&
-+ cpu_vendor[1] == A32('a','u','r','H') &&
-+ cpu_vendor[2] == A32('a','u','l','s');
-+}
-+
-+static int is_transmeta(void)
-+{
-+ return cpu_vendor[0] == A32('G','e','n','u') &&
-+ cpu_vendor[1] == A32('i','n','e','T') &&
-+ cpu_vendor[2] == A32('M','x','8','6');
-+}
-+
-+static int has_fpu(void)
-+{
-+ u16 fcw = -1, fsw = -1;
-+ u32 cr0;
-+
-+ asm("movl %%cr0,%0" : "=r" (cr0));
-+ if (cr0 & (X86_CR0_EM|X86_CR0_TS)) {
-+ cr0 &= ~(X86_CR0_EM|X86_CR0_TS);
-+ asm volatile("movl %0,%%cr0" : : "r" (cr0));
-+ }
-+
-+ asm("fninit ; fnstsw %0 ; fnstcw %1" : "+m" (fsw), "+m" (fcw));
-+
-+ return fsw == 0 && (fcw & 0x103f) == 0x003f;
-+}
-+
-+static int has_eflag(u32 mask)
-+{
-+ u32 f0, f1;
-+
-+ asm("pushfl ; "
-+ "pushfl ; "
-+ "popl %0 ; "
-+ "movl %0,%1 ; "
-+ "xorl %2,%1 ; "
-+ "pushl %1 ; "
-+ "popfl ; "
-+ "pushfl ; "
-+ "popl %1 ; "
-+ "popfl"
-+ : "=r" (f0), "=r" (f1)
-+ : "g" (mask));
-+
-+ return !!((f0^f1) & mask);
-+}
-+
-+static void get_flags(void)
-+{
-+ u32 max_intel_level, max_amd_level;
-+ u32 tfms;
-+
-+ if (has_fpu())
-+ set_bit(X86_FEATURE_FPU, cpu.flags);
-+
-+ if (has_eflag(X86_EFLAGS_ID)) {
-+ asm("cpuid"
-+ : "=a" (max_intel_level),
-+ "=b" (cpu_vendor[0]),
-+ "=d" (cpu_vendor[1]),
-+ "=c" (cpu_vendor[2])
-+ : "a" (0));
-+
-+ if (max_intel_level >= 0x00000001 &&
-+ max_intel_level <= 0x0000ffff) {
-+ asm("cpuid"
-+ : "=a" (tfms),
-+ "=c" (cpu.flags[4]),
-+ "=d" (cpu.flags[0])
-+ : "a" (0x00000001)
-+ : "ebx");
-+ cpu.level = (tfms >> 8) & 15;
-+ cpu.model = (tfms >> 4) & 15;
-+ if (cpu.level >= 6)
-+ cpu.model += ((tfms >> 16) & 0xf) << 4;
-+ }
-+
-+ asm("cpuid"
-+ : "=a" (max_amd_level)
-+ : "a" (0x80000000)
-+ : "ebx", "ecx", "edx");
-+
-+ if (max_amd_level >= 0x80000001 &&
-+ max_amd_level <= 0x8000ffff) {
-+ u32 eax = 0x80000001;
-+ asm("cpuid"
-+ : "+a" (eax),
-+ "=c" (cpu.flags[6]),
-+ "=d" (cpu.flags[1])
-+ : : "ebx");
-+ }
-+ }
-+}
-+
-+/* Returns a bitmask of which words we have error bits in */
-+static int check_flags(void)
-+{
-+ u32 err;
-+ int i;
-+
-+ err = 0;
-+ for (i = 0; i < NCAPINTS; i++) {
-+ err_flags[i] = req_flags[i] & ~cpu.flags[i];
-+ if (err_flags[i])
-+ err |= 1 << i;
-+ }
-+
-+ return err;
-+}
-+
-+/*
-+ * Returns -1 on error.
-+ *
-+ * *cpu_level is set to the current CPU level; *req_level to the required
-+ * level. x86-64 is considered level 64 for this purpose.
-+ *
-+ * *err_flags_ptr is set to the flags error array if there are flags missing.
-+ */
-+int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr)
-+{
-+ int err;
-+
-+ memset(&cpu.flags, 0, sizeof cpu.flags);
-+ cpu.level = 3;
-+
-+ if (has_eflag(X86_EFLAGS_AC))
-+ cpu.level = 4;
-+
-+ get_flags();
-+ err = check_flags();
-+
-+ if (test_bit(X86_FEATURE_LM, cpu.flags))
-+ cpu.level = 64;
-+
-+ if (err == 0x01 &&
-+ !(err_flags[0] &
-+ ~((1 << X86_FEATURE_XMM)|(1 << X86_FEATURE_XMM2))) &&
-+ is_amd()) {
-+ /* If this is an AMD and we're only missing SSE+SSE2, try to
-+ turn them on */
-+
-+ u32 ecx = MSR_K7_HWCR;
-+ u32 eax, edx;
-+
-+ asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
-+ eax &= ~(1 << 15);
-+ asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
-+
-+ get_flags(); /* Make sure it really did something */
-+ err = check_flags();
-+ } else if (err == 0x01 &&
-+ !(err_flags[0] & ~(1 << X86_FEATURE_CX8)) &&
-+ is_centaur() && cpu.model >= 6) {
-+ /* If this is a VIA C3, we might have to enable CX8
-+ explicitly */
-+
-+ u32 ecx = MSR_VIA_FCR;
-+ u32 eax, edx;
-+
-+ asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
-+ eax |= (1<<1)|(1<<7);
-+ asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
-+
-+ set_bit(X86_FEATURE_CX8, cpu.flags);
-+ err = check_flags();
-+ } else if (err == 0x01 && is_transmeta()) {
-+ /* Transmeta might have masked feature bits in word 0 */
-+
-+ u32 ecx = 0x80860004;
-+ u32 eax, edx;
-+ u32 level = 1;
-+
-+ asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
-+ asm("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx));
-+ asm("cpuid"
-+ : "+a" (level), "=d" (cpu.flags[0])
-+ : : "ecx", "ebx");
-+ asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
-+
-+ err = check_flags();
-+ }
-+
-+ if (err_flags_ptr)
-+ *err_flags_ptr = err ? err_flags : NULL;
-+ if (cpu_level_ptr)
-+ *cpu_level_ptr = cpu.level;
-+ if (req_level_ptr)
-+ *req_level_ptr = req_level;
-+
-+ return (cpu.level < req_level || err) ? -1 : 0;
-+}
-diff -puN arch/i386/boot/edd.S~git-newsetup /dev/null
---- a/arch/i386/boot/edd.S
-+++ /dev/null
-@@ -1,231 +0,0 @@
--/*
-- * BIOS Enhanced Disk Drive support
-- * Copyright (C) 2002, 2003, 2004 Dell, Inc.
-- * by Matt Domsch <Matt_Domsch@dell.com> October 2002
-- * conformant to T13 Committee www.t13.org
-- * projects 1572D, 1484D, 1386D, 1226DT
-- * disk signature read by Matt Domsch <Matt_Domsch@dell.com>
-- * and Andrew Wilks <Andrew_Wilks@dell.com> September 2003, June 2004
-- * legacy CHS retrieval by Patrick J. LoPresti <patl@users.sourceforge.net>
-- * March 2004
-- * Command line option parsing, Matt Domsch, November 2004
-- */
--
--#include <linux/edd.h>
--#include <asm/setup.h>
--
--#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
--
--# It is assumed that %ds == INITSEG here
--
-- movb $0, (EDD_MBR_SIG_NR_BUF)
-- movb $0, (EDDNR)
--
--# Check the command line for options:
--# edd=of disables EDD completely (edd=off)
--# edd=sk skips the MBR test (edd=skipmbr)
--# edd=on re-enables EDD (edd=on)
--
-- pushl %esi
-- movw $edd_mbr_sig_start, %di # Default to edd=on
--
-- movl %cs:(cmd_line_ptr), %esi
-- andl %esi, %esi
-- jz old_cl # Old boot protocol?
--
--# Convert to a real-mode pointer in fs:si
-- movl %esi, %eax
-- shrl $4, %eax
-- movw %ax, %fs
-- andw $0xf, %si
-- jmp have_cl_pointer
--
--# Old-style boot protocol?
--old_cl:
-- push %ds # aka INITSEG
-- pop %fs
--
-- cmpw $0xa33f, (0x20)
-- jne done_cl # No command line at all?
-- movw (0x22), %si # Pointer relative to INITSEG
--
--# fs:si has the pointer to the command line now
--have_cl_pointer:
--
--# Loop through kernel command line one byte at a time. Just in
--# case the loader is buggy and failed to null-terminate the command line
--# terminate if we get close enough to the end of the segment that we
--# cannot fit "edd=XX"...
--cl_atspace:
-- cmpw $-5, %si # Watch for segment wraparound
-- jae done_cl
-- movl %fs:(%si), %eax
-- andb %al, %al # End of line?
-- jz done_cl
-- cmpl $EDD_CL_EQUALS, %eax
-- jz found_edd_equals
-- cmpb $0x20, %al # <= space consider whitespace
-- ja cl_skipword
-- incw %si
-- jmp cl_atspace
--
--cl_skipword:
-- cmpw $-5, %si # Watch for segment wraparound
-- jae done_cl
-- movb %fs:(%si), %al # End of string?
-- andb %al, %al
-- jz done_cl
-- cmpb $0x20, %al
-- jbe cl_atspace
-- incw %si
-- jmp cl_skipword
--
--found_edd_equals:
--# only looking at first two characters after equals
--# late overrides early on the command line, so keep going after finding something
-- movw %fs:4(%si), %ax
-- cmpw $EDD_CL_OFF, %ax # edd=of
-- je do_edd_off
-- cmpw $EDD_CL_SKIP, %ax # edd=sk
-- je do_edd_skipmbr
-- cmpw $EDD_CL_ON, %ax # edd=on
-- je do_edd_on
-- jmp cl_skipword
--do_edd_skipmbr:
-- movw $edd_start, %di
-- jmp cl_skipword
--do_edd_off:
-- movw $edd_done, %di
-- jmp cl_skipword
--do_edd_on:
-- movw $edd_mbr_sig_start, %di
-- jmp cl_skipword
--
--done_cl:
-- popl %esi
-- jmpw *%di
--
--# Read the first sector of each BIOS disk device and store the 4-byte signature
--edd_mbr_sig_start:
-- movb $0x80, %dl # from device 80
-- movw $EDD_MBR_SIG_BUF, %bx # store buffer ptr in bx
--edd_mbr_sig_read:
-- movl $0xFFFFFFFF, %eax
-- movl %eax, (%bx) # assume failure
-- pushw %bx
-- movb $READ_SECTORS, %ah
-- movb $1, %al # read 1 sector
-- movb $0, %dh # at head 0
-- movw $1, %cx # cylinder 0, sector 0
-- pushw %es
-- pushw %ds
-- popw %es
-- movw $EDDBUF, %bx # disk's data goes into EDDBUF
-- pushw %dx # work around buggy BIOSes
-- stc # work around buggy BIOSes
-- int $0x13
-- sti # work around buggy BIOSes
-- popw %dx
-- popw %es
-- popw %bx
-- jc edd_mbr_sig_done # on failure, we're done.
-- cmpb $0, %ah # some BIOSes do not set CF
-- jne edd_mbr_sig_done # on failure, we're done.
-- movl (EDDBUF+EDD_MBR_SIG_OFFSET), %eax # read sig out of the MBR
-- movl %eax, (%bx) # store success
-- incb (EDD_MBR_SIG_NR_BUF) # note that we stored something
-- incb %dl # increment to next device
-- addw $4, %bx # increment sig buffer ptr
-- cmpb $EDD_MBR_SIG_MAX, (EDD_MBR_SIG_NR_BUF) # Out of space?
-- jb edd_mbr_sig_read # keep looping
--edd_mbr_sig_done:
--
--# Do the BIOS Enhanced Disk Drive calls
--# This consists of two calls:
--# int 13h ah=41h "Check Extensions Present"
--# int 13h ah=48h "Get Device Parameters"
--# int 13h ah=08h "Legacy Get Device Parameters"
--#
--# A buffer of size EDDMAXNR*(EDDEXTSIZE+EDDPARMSIZE) is reserved for our use
--# in the boot_params at EDDBUF. The first four bytes of which are
--# used to store the device number, interface support map and version
--# results from fn41. The next four bytes are used to store the legacy
--# cylinders, heads, and sectors from fn08. The following 74 bytes are used to
--# store the results from fn48. Starting from device 80h, fn41, then fn48
--# are called and their results stored in EDDBUF+n*(EDDEXTSIZE+EDDPARMIZE).
--# Then the pointer is incremented to store the data for the next call.
--# This repeats until either a device doesn't exist, or until EDDMAXNR
--# devices have been stored.
--# The one tricky part is that ds:si always points EDDEXTSIZE bytes into
--# the structure, and the fn41 and fn08 results are stored at offsets
--# from there. This removes the need to increment the pointer for
--# every store, and leaves it ready for the fn48 call.
--# A second one-byte buffer, EDDNR, in the boot_params stores
--# the number of BIOS devices which exist, up to EDDMAXNR.
--# In setup.c, copy_edd() stores both boot_params buffers away
--# for later use, as they would get overwritten otherwise.
--# This code is sensitive to the size of the structs in edd.h
--edd_start:
-- # %ds points to the bootsector
-- # result buffer for fn48
-- movw $EDDBUF+EDDEXTSIZE, %si # in ds:si, fn41 results
-- # kept just before that
-- movb $0x80, %dl # BIOS device 0x80
--
--edd_check_ext:
-- movb $CHECKEXTENSIONSPRESENT, %ah # Function 41
-- movw $EDDMAGIC1, %bx # magic
-- int $0x13 # make the call
-- jc edd_done # no more BIOS devices
--
-- cmpw $EDDMAGIC2, %bx # is magic right?
-- jne edd_next # nope, next...
--
-- movb %dl, %ds:-8(%si) # store device number
-- movb %ah, %ds:-7(%si) # store version
-- movw %cx, %ds:-6(%si) # store extensions
-- incb (EDDNR) # note that we stored something
--
--edd_get_device_params:
-- movw $EDDPARMSIZE, %ds:(%si) # put size
-- movw $0x0, %ds:2(%si) # work around buggy BIOSes
-- movb $GETDEVICEPARAMETERS, %ah # Function 48
-- int $0x13 # make the call
-- # Don't check for fail return
-- # it doesn't matter.
--edd_get_legacy_chs:
-- xorw %ax, %ax
-- movw %ax, %ds:-4(%si)
-- movw %ax, %ds:-2(%si)
-- # Ralf Brown's Interrupt List says to set ES:DI to
-- # 0000h:0000h "to guard against BIOS bugs"
-- pushw %es
-- movw %ax, %es
-- movw %ax, %di
-- pushw %dx # legacy call clobbers %dl
-- movb $LEGACYGETDEVICEPARAMETERS, %ah # Function 08
-- int $0x13 # make the call
-- jc edd_legacy_done # failed
-- movb %cl, %al # Low 6 bits are max
-- andb $0x3F, %al # sector number
-- movb %al, %ds:-1(%si) # Record max sect
-- movb %dh, %ds:-2(%si) # Record max head number
-- movb %ch, %al # Low 8 bits of max cyl
-- shr $6, %cl
-- movb %cl, %ah # High 2 bits of max cyl
-- movw %ax, %ds:-4(%si)
--
--edd_legacy_done:
-- popw %dx
-- popw %es
-- movw %si, %ax # increment si
-- addw $EDDPARMSIZE+EDDEXTSIZE, %ax
-- movw %ax, %si
--
--edd_next:
-- incb %dl # increment to next device
-- cmpb $EDDMAXNR, (EDDNR) # Out of space?
-- jb edd_check_ext # keep looping
--
--edd_done:
--#endif
-diff -puN /dev/null arch/i386/boot/edd.c
---- /dev/null
-+++ a/arch/i386/boot/edd.c
-@@ -0,0 +1,196 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/edd.c
-+ *
-+ * Get EDD BIOS disk information
-+ */
-+
-+#include "boot.h"
-+#include <linux/edd.h>
-+
-+#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
-+
-+struct edd_dapa {
-+ u8 pkt_size;
-+ u8 rsvd;
-+ u16 sector_cnt;
-+ u16 buf_off, buf_seg;
-+ u64 lba;
-+ u64 buf_lin_addr;
-+};
-+
-+/*
-+ * Note: this uses the heap to hold the loaded sector.
-+ */
-+static int read_sector(u8 devno, u64 lba, void *buf)
-+{
-+ struct edd_dapa dapa;
-+ u16 ax, bx, cx, dx, si;
-+
-+ memset(&dapa, 0, sizeof dapa);
-+ dapa.pkt_size = sizeof(dapa);
-+ dapa.sector_cnt = 1;
-+ dapa.buf_off = (size_t)buf;
-+ dapa.buf_seg = ds();
-+ dapa.lba = lba;
-+
-+ ax = 0x4200; /* Extended Read */
-+ si = (size_t)&dapa;
-+ dx = devno;
-+ asm("pushfl; stc; int $0x13; setc %%al; popfl"
-+ : "+a" (ax), "+S" (si), "+d" (dx)
-+ : "m" (dapa)
-+ : "ebx", "ecx", "edi", "memory");
-+
-+ if (!(u8)ax)
-+ return 0; /* OK */
-+
-+ ax = 0x0201; /* Legacy Read, one sector */
-+ cx = 0x0001; /* Sector 0-0-1 */
-+ dx = devno;
-+ bx = (size_t)buf;
-+ asm("pushfl; stc; int $0x13; setc %%al; popfl"
-+ : "+a" (ax), "+c" (cx), "+d" (dx), "+b" (bx)
-+ : : "esi", "edi", "memory");
-+
-+ return -(u8)ax; /* 0 or -1 */
-+}
-+
-+static u32 read_mbr_sig(u8 devno, struct edd_info *ei)
-+{
-+ int sector_size;
-+ char *mbrbuf_ptr, *mbrbuf_end;
-+ u32 mbrsig;
-+ u32 buf_base, mbr_base;
-+ extern char _end[];
-+ static char mbr_buf[1024];
-+
-+ sector_size = ei->params.bytes_per_sector;
-+ if (!sector_size)
-+ sector_size = 512; /* Best available guess */
-+
-+ buf_base = (ds() << 4) + (u32)&_end;
-+ mbr_base = (buf_base+sector_size-1) & ~(sector_size-1);
-+ mbrbuf_ptr = mbr_buf + (mbr_base-buf_base);
-+ mbrbuf_end = mbrbuf_ptr + sector_size;
-+
-+ if (!(boot_params.hdr.loadflags & CAN_USE_HEAP))
-+ return 0;
-+ if (mbrbuf_end > (char *)(size_t)boot_params.hdr.heap_end_ptr)
-+ return 0;
-+
-+ if (read_sector(devno, 0, mbrbuf_ptr))
-+ return 0;
-+
-+ mbrsig = *(u32 *)&mbrbuf_ptr[EDD_MBR_SIG_OFFSET];
-+ return mbrsig;
-+}
-+
-+static int get_edd_info(u8 devno, struct edd_info *ei)
-+{
-+ u16 ax, bx, cx, dx, di;
-+
-+ memset(ei, 0, sizeof *ei);
-+
-+ /* Check Extensions Present */
-+
-+ ax = 0x4100;
-+ bx = EDDMAGIC1;
-+ dx = devno;
-+ asm("pushfl; stc; int $0x13; setc %%al; popfl"
-+ : "+a" (ax), "+b" (bx), "=c" (cx), "+d" (dx)
-+ : : "esi", "edi");
-+
-+ if ((u8)ax)
-+ return -1; /* No extended information */
-+
-+ if (bx != EDDMAGIC2)
-+ return -1;
-+
-+ ei->device = devno;
-+ ei->version = ax >> 8; /* EDD version number */
-+ ei->interface_support = cx; /* EDD functionality subsets */
-+
-+ /* Extended Get Device Parameters */
-+
-+ ei->params.length = sizeof(ei->params);
-+ ax = 0x4800;
-+ dx = devno;
-+ asm("pushfl; int $0x13; popfl"
-+ : "+a" (ax), "+d" (dx)
-+ : "S" (&ei->params)
-+ : "ebx", "ecx", "edi");
-+
-+ /* Get legacy CHS parameters */
-+
-+ /* Ralf Brown recommends setting ES:DI to 0:0 */
-+ ax = 0x0800;
-+ dx = devno;
-+ di = 0;
-+ asm("pushw %%es; "
-+ "movw %%di,%%es; "
-+ "pushfl; stc; int $0x13; setc %%al; popfl; "
-+ "popw %%es"
-+ : "+a" (ax), "=b" (bx), "=c" (cx), "+d" (dx), "+D" (di)
-+ : : "esi");
-+
-+ if ((u8)ax == 0) {
-+ ei->legacy_max_cylinder = (cx >> 8) + ((cx & 0xc0) << 2);
-+ ei->legacy_max_head = dx >> 8;
-+ ei->legacy_sectors_per_track = cx & 0x3f;
-+ }
-+
-+ return 0;
-+}
-+
-+void query_edd(void)
-+{
-+ char eddarg[8];
-+ int do_mbr = 1;
-+ int do_edd = 1;
-+ int devno;
-+ struct edd_info ei, *edp;
-+
-+ if (cmdline_find_option("edd", eddarg, sizeof eddarg) > 0) {
-+ if (!strcmp(eddarg, "skipmbr") || !strcmp(eddarg, "skip"))
-+ do_mbr = 0;
-+ else if (!strcmp(eddarg, "off"))
-+ do_edd = 0;
-+ }
-+
-+ edp = (struct edd_info *)boot_params.eddbuf;
-+
-+ if (!do_edd)
-+ return;
-+
-+ for (devno = 0x80; devno < 0x80+EDD_MBR_SIG_MAX; devno++) {
-+ /*
-+ * Scan the BIOS-supported hard disks and query EDD
-+ * information...
-+ */
-+ get_edd_info(devno, &ei);
-+
-+ if (boot_params.eddbuf_entries < EDDMAXNR) {
-+ memcpy(edp, &ei, sizeof ei);
-+ edp++;
-+ boot_params.eddbuf_entries++;
-+ }
-+
-+ if (do_mbr) {
-+ u32 mbr_sig;
-+ mbr_sig = read_mbr_sig(devno, &ei);
-+ boot_params.edd_mbr_sig_buffer[devno-0x80] = mbr_sig;
-+ }
-+ }
-+}
-+
-+#endif
-diff -puN /dev/null arch/i386/boot/header.S
---- /dev/null
-+++ a/arch/i386/boot/header.S
-@@ -0,0 +1,283 @@
-+/*
-+ * header.S
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ *
-+ * Based on bootsect.S and setup.S
-+ * modified by more people than can be counted
-+ *
-+ * Rewritten as a common file by H. Peter Anvin (Apr 2007)
-+ *
-+ * BIG FAT NOTE: We're in real mode using 64k segments. Therefore segment
-+ * addresses must be multiplied by 16 to obtain their respective linear
-+ * addresses. To avoid confusion, linear addresses are written using leading
-+ * hex while segment addresses are written as segment:offset.
-+ *
-+ */
-+
-+#include <asm/segment.h>
-+#include <linux/utsrelease.h>
-+#include <asm/boot.h>
-+#include <asm/e820.h>
-+#include <asm/page.h>
-+#include <asm/setup.h>
-+#include "boot.h"
-+
-+SETUPSECTS = 4 /* default nr of setup-sectors */
-+BOOTSEG = 0x07C0 /* original address of boot-sector */
-+SYSSEG = DEF_SYSSEG /* system loaded at 0x10000 (65536) */
-+SYSSIZE = DEF_SYSSIZE /* system size: # of 16-byte clicks */
-+ /* to be loaded */
-+ROOT_DEV = 0 /* ROOT_DEV is now written by "build" */
-+SWAP_DEV = 0 /* SWAP_DEV is now written by "build" */
-+
-+#ifndef SVGA_MODE
-+#define SVGA_MODE ASK_VGA
-+#endif
-+
-+#ifndef RAMDISK
-+#define RAMDISK 0
-+#endif
-+
-+#ifndef ROOT_RDONLY
-+#define ROOT_RDONLY 1
-+#endif
-+
-+ .code16
-+ .section ".bstext", "ax"
-+
-+ .global bootsect_start
-+bootsect_start:
-+
-+ # Normalize the start address
-+ ljmp $BOOTSEG, $start2
-+
-+start2:
-+ movw %cs, %ax
-+ movw %ax, %ds
-+ movw %ax, %es
-+ movw %ax, %ss
-+ xorw %sp, %sp
-+ sti
-+ cld
-+
-+ movw $bugger_off_msg, %si
-+
-+msg_loop:
-+ lodsb
-+ andb %al, %al
-+ jz bs_die
-+ movb $0xe, %ah
-+ movw $7, %bx
-+ int $0x10
-+ jmp msg_loop
-+
-+bs_die:
-+ # Allow the user to press a key, then reboot
-+ xorw %ax, %ax
-+ int $0x16
-+ int $0x19
-+
-+ # int 0x19 should never return. In case it does anyway,
-+ # invoke the BIOS reset code...
-+ ljmp $0xf000,$0xfff0
-+
-+ .section ".bsdata", "a"
-+bugger_off_msg:
-+ .ascii "Direct booting from floppy is no longer supported.\r\n"
-+ .ascii "Please use a boot loader program instead.\r\n"
-+ .ascii "\n"
-+ .ascii "Remove disk and press any key to reboot . . .\r\n"
-+ .byte 0
-+
-+
-+ # Kernel attributes; used by setup. This is part 1 of the
-+ # header, from the old boot sector.
-+
-+ .section ".header", "a"
-+ .globl hdr
-+hdr:
-+setup_sects: .byte SETUPSECTS
-+root_flags: .word ROOT_RDONLY
-+syssize: .long SYSSIZE
-+ram_size: .word RAMDISK
-+vid_mode: .word SVGA_MODE
-+root_dev: .word ROOT_DEV
-+boot_flag: .word 0xAA55
-+
-+ # offset 512, entry point
-+
-+ .globl _start
-+_start:
-+ # Explicitly enter this as bytes, or the assembler
-+ # tries to generate a 3-byte jump here, which causes
-+ # everything else to push off to the wrong offset.
-+ .byte 0xeb # short (2-byte) jump
-+ .byte start_of_setup-1f
-+1:
-+
-+ # Part 2 of the header, from the old setup.S
-+
-+ .ascii "HdrS" # header signature
-+ .word 0x0206 # header version number (>= 0x0105)
-+ # or else old loadlin-1.5 will fail)
-+ .globl realmode_swtch
-+realmode_swtch: .word 0, 0 # default_switch, SETUPSEG
-+start_sys_seg: .word SYSSEG
-+ .word kernel_version-512 # pointing to kernel version string
-+ # above section of header is compatible
-+ # with loadlin-1.5 (header v1.5). Don't
-+ # change it.
-+
-+type_of_loader: .byte 0 # = 0, old one (LILO, Loadlin,
-+ # Bootlin, SYSLX, bootsect...)
-+ # See Documentation/i386/boot.txt for
-+ # assigned ids
-+
-+# flags, unused bits must be zero (RFU) bit within loadflags
-+loadflags:
-+LOADED_HIGH = 1 # If set, the kernel is loaded high
-+CAN_USE_HEAP = 0x80 # If set, the loader also has set
-+ # heap_end_ptr to tell how much
-+ # space behind setup.S can be used for
-+ # heap purposes.
-+ # Only the loader knows what is free
-+#ifndef __BIG_KERNEL__
-+ .byte 0
-+#else
-+ .byte LOADED_HIGH
-+#endif
-+
-+setup_move_size: .word 0x8000 # size to move, when setup is not
-+ # loaded at 0x90000. We will move setup
-+ # to 0x90000 then just before jumping
-+ # into the kernel. However, only the
-+ # loader knows how much data behind
-+ # us also needs to be loaded.
-+
-+code32_start: # here loaders can put a different
-+ # start address for 32-bit code.
-+#ifndef __BIG_KERNEL__
-+ .long 0x1000 # 0x1000 = default for zImage
-+#else
-+ .long 0x100000 # 0x100000 = default for big kernel
-+#endif
-+
-+ramdisk_image: .long 0 # address of loaded ramdisk image
-+ # Here the loader puts the 32-bit
-+ # address where it loaded the image.
-+ # This only will be read by the kernel.
-+
-+ramdisk_size: .long 0 # its size in bytes
-+
-+bootsect_kludge:
-+ .long 0 # obsolete
-+
-+heap_end_ptr: .word _end+1024 # (Header version 0x0201 or later)
-+ # space from here (exclusive) down to
-+ # end of setup code can be used by setup
-+ # for local heap purposes.
-+
-+pad1: .word 0
-+cmd_line_ptr: .long 0 # (Header version 0x0202 or later)
-+ # If nonzero, a 32-bit pointer
-+ # to the kernel command line.
-+ # The command line should be
-+ # located between the start of
-+ # setup and the end of low
-+ # memory (0xa0000), or it may
-+ # get overwritten before it
-+ # gets read. If this field is
-+ # used, there is no longer
-+ # anything magical about the
-+ # 0x90000 segment; the setup
-+ # can be located anywhere in
-+ # low memory 0x10000 or higher.
-+
-+ramdisk_max: .long (-__PAGE_OFFSET-(512 << 20)-1) & 0x7fffffff
-+ # (Header version 0x0203 or later)
-+ # The highest safe address for
-+ # the contents of an initrd
-+
-+kernel_alignment: .long CONFIG_PHYSICAL_ALIGN #physical addr alignment
-+ #required for protected mode
-+ #kernel
-+#ifdef CONFIG_RELOCATABLE
-+relocatable_kernel: .byte 1
-+#else
-+relocatable_kernel: .byte 0
-+#endif
-+pad2: .byte 0
-+pad3: .word 0
-+
-+cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line,
-+ #added with boot protocol
-+ #version 2.06
-+
-+# End of setup header #####################################################
-+
-+ .section ".inittext", "ax"
-+start_of_setup:
-+#ifdef SAFE_RESET_DISK_CONTROLLER
-+# Reset the disk controller.
-+ movw $0x0000, %ax # Reset disk controller
-+ movb $0x80, %dl # All disks
-+ int $0x13
-+#endif
-+
-+# We will have entired with %cs = %ds+0x20, normalize %cs so
-+# it is on par with the other segments.
-+ pushw %ds
-+ pushw $setup2
-+ lretw
-+
-+setup2:
-+# Force %es = %ds
-+ movw %ds, %ax
-+ movw %ax, %es
-+ cld
-+
-+# Stack paranoia: align the stack and make sure it is good
-+# for both 16- and 32-bit references. In particular, if we
-+# were meant to have been using the full 16-bit segment, the
-+# caller might have set %sp to zero, which breaks %esp-based
-+# references.
-+ andw $~3, %sp # dword align (might as well...)
-+ jnz 1f
-+ movw $0xfffc, %sp # Make sure we're not zero
-+1: movzwl %sp, %esp # Clear upper half of %esp
-+ sti
-+
-+# Check signature at end of setup
-+ cmpl $0x5a5aaa55, setup_sig
-+ jne setup_bad
-+
-+# Zero the bss
-+ movw $__bss_start, %di
-+ movw $_end+3, %cx
-+ xorl %eax, %eax
-+ subw %di, %cx
-+ shrw $2, %cx
-+ rep; stosl
-+
-+# Jump to C code (should not return)
-+ calll main
-+
-+# Setup corrupt somehow...
-+setup_bad:
-+ movl $setup_corrupt, %eax
-+ calll puts
-+ # Fall through...
-+
-+ .globl die
-+ .type die, @function
-+die:
-+ hlt
-+ jmp die
-+
-+ .size die, .-due
-+
-+ .section ".initdata", "a"
-+setup_corrupt:
-+ .byte 7
-+ .string "No setup signature found..."
-diff -puN /dev/null arch/i386/boot/main.c
---- /dev/null
-+++ a/arch/i386/boot/main.c
-@@ -0,0 +1,161 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/main.c
-+ *
-+ * Main module for the real-mode kernel code
-+ */
-+
-+#include "boot.h"
-+
-+struct boot_params boot_params __attribute__((aligned(16)));
-+
-+char *HEAP = _end;
-+char *heap_end = _end; /* Default end of heap = no heap */
-+
-+/*
-+ * Copy the header into the boot parameter block. Since this
-+ * screws up the old-style command line protocol, adjust by
-+ * filling in the new-style command line pointer instead.
-+ */
-+#define OLD_CL_MAGIC 0xA33F
-+#define OLD_CL_ADDRESS 0x20
-+
-+static void copy_boot_params(void)
-+{
-+ struct old_cmdline {
-+ u16 cl_magic;
-+ u16 cl_offset;
-+ };
-+ const struct old_cmdline * const oldcmd =
-+ (const struct old_cmdline *)OLD_CL_ADDRESS;
-+
-+ BUILD_BUG_ON(sizeof boot_params != 4096);
-+ memcpy(&boot_params.hdr, &hdr, sizeof hdr);
-+
-+ if (!boot_params.hdr.cmd_line_ptr &&
-+ oldcmd->cl_magic == OLD_CL_MAGIC) {
-+ /* Old-style command line protocol. */
-+ u16 cmdline_seg;
-+
-+ /* Figure out if the command line falls in the region
-+ of memory that an old kernel would have copied up
-+ to 0x90000... */
-+ if (oldcmd->cl_offset < boot_params.hdr.setup_move_size)
-+ cmdline_seg = ds();
-+ else
-+ cmdline_seg = 0x9000;
-+
-+ boot_params.hdr.cmd_line_ptr =
-+ (cmdline_seg << 4) + oldcmd->cl_offset;
-+ }
-+}
-+
-+/*
-+ * Set the keyboard repeat rate to maximum. Unclear why this
-+ * is done here; this might be possible to kill off as stale code.
-+ */
-+static void keyboard_set_repeat(void)
-+{
-+ u16 ax = 0x0305;
-+ u16 bx = 0;
-+ asm volatile("int $0x16"
-+ : "+a" (ax), "+b" (bx)
-+ : : "ecx", "edx", "esi", "edi");
-+}
-+
-+/*
-+ * Get Intel SpeedStep IST information.
-+ */
-+static void query_speedstep_ist(void)
-+{
-+ asm("int $0x15"
-+ : "=a" (boot_params.speedstep_info[0]),
-+ "=b" (boot_params.speedstep_info[1]),
-+ "=c" (boot_params.speedstep_info[2]),
-+ "=d" (boot_params.speedstep_info[3])
-+ : "a" (0x0000e980), /* IST Support */
-+ "d" (0x47534943)); /* Request value */
-+}
-+
-+/*
-+ * Tell the BIOS what CPU mode we intend to run in.
-+ */
-+static void set_bios_mode(void)
-+{
-+#ifdef CONFIG_X86_64
-+ u32 eax, ebx;
-+
-+ eax = 0xec00;
-+ ebx = 2;
-+ asm volatile("int $0x15"
-+ : "+a" (eax), "+b" (ebx)
-+ : : "ecx", "edx", "esi", "edi");
-+#endif
-+}
-+
-+void main(void)
-+{
-+ /* First, copy the boot header into the "zeropage" */
-+ copy_boot_params();
-+
-+ /* End of heap check */
-+ if (boot_params.hdr.loadflags & CAN_USE_HEAP) {
-+ heap_end = (char *)(boot_params.hdr.heap_end_ptr
-+ +0x200-STACK_SIZE);
-+ } else {
-+ /* Boot protocol 2.00 only, no heap available */
-+ puts("WARNING: Ancient bootloader, some functionality "
-+ "may be limited!\n");
-+ }
-+
-+ /* Make sure we have all the proper CPU support */
-+ if (validate_cpu()) {
-+ puts("Unable to boot - please use a kernel appropriate "
-+ "for your CPU.\n");
-+ die();
-+ }
-+
-+ /* Tell the BIOS what CPU mode we intend to run in. */
-+ set_bios_mode();
-+
-+ /* Detect memory layout */
-+ detect_memory();
-+
-+ /* Set keyboard repeat rate (why?) */
-+ keyboard_set_repeat();
-+
-+ /* Set the video mode */
-+ set_video();
-+
-+ /* Query MCA information */
-+ query_mca();
-+
-+ /* Voyager */
-+#ifdef CONFIG_X86_VOYAGER
-+ query_voyager();
-+#endif
-+
-+ /* Query SpeedStep IST information */
-+ query_speedstep_ist();
-+
-+ /* Query APM information */
-+#if defined(CONFIG_APM) || defined(CONFIG_APM_MODULE)
-+ query_apm_bios();
-+#endif
-+
-+ /* Query EDD information */
-+#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
-+ query_edd();
-+#endif
-+ /* Do the last things and invoke protected mode */
-+ go_to_protected_mode();
-+}
-diff -puN /dev/null arch/i386/boot/mca.c
---- /dev/null
-+++ a/arch/i386/boot/mca.c
-@@ -0,0 +1,43 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/mca.c
-+ *
-+ * Get the MCA system description table
-+ */
-+
-+#include "boot.h"
-+
-+int query_mca(void)
-+{
-+ u8 err;
-+ u16 es, bx, len;
-+
-+ asm("pushw %%es ; "
-+ "int $0x15 ; "
-+ "setc %0 ; "
-+ "movw %%es, %1 ; "
-+ "popw %%es"
-+ : "=acdSDm" (err), "=acdSDm" (es), "=b" (bx)
-+ : "a" (0xc000));
-+
-+ if (err)
-+ return -1; /* No MCA present */
-+
-+ set_fs(es);
-+ len = rdfs16(bx);
-+
-+ if (len > sizeof(boot_params.sys_desc_table))
-+ len = sizeof(boot_params.sys_desc_table);
-+
-+ copy_from_fs(&boot_params.sys_desc_table, bx, len);
-+ return 0;
-+}
-diff -puN /dev/null arch/i386/boot/memory.c
---- /dev/null
-+++ a/arch/i386/boot/memory.c
-@@ -0,0 +1,99 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/memory.c
-+ *
-+ * Memory detection code
-+ */
-+
-+#include "boot.h"
-+
-+#define SMAP 0x534d4150 /* ASCII "SMAP" */
-+
-+static int detect_memory_e820(void)
-+{
-+ u32 next = 0;
-+ u32 size, id;
-+ u8 err;
-+ struct e820entry *desc = boot_params.e820_map;
-+
-+ do {
-+ size = sizeof(struct e820entry);
-+ id = SMAP;
-+ asm("int $0x15; setc %0"
-+ : "=am" (err), "+b" (next), "+d" (id), "+c" (size),
-+ "=m" (*desc)
-+ : "D" (desc), "a" (0xe820));
-+
-+ if (err || id != SMAP)
-+ break;
-+
-+ boot_params.e820_entries++;
-+ desc++;
-+ } while (next && boot_params.e820_entries < E820MAX);
-+
-+ return boot_params.e820_entries;
-+}
-+
-+static int detect_memory_e801(void)
-+{
-+ u16 ax, bx, cx, dx;
-+ u8 err;
-+
-+ bx = cx = dx = 0;
-+ ax = 0xe801;
-+ asm("stc; int $0x15; setc %0"
-+ : "=m" (err), "+a" (ax), "+b" (bx), "+c" (cx), "+d" (dx));
-+
-+ if (err)
-+ return -1;
-+
-+ /* Do we really need to do this? */
-+ if (cx || dx) {
-+ ax = cx;
-+ bx = dx;
-+ }
-+
-+ if (ax > 15*1024)
-+ return -1; /* Bogus! */
-+
-+ /* This ignores memory above 16MB if we have a memory hole
-+ there. If someone actually finds a machine with a memory
-+ hole at 16MB and no support for 0E820h they should probably
-+ generate a fake e820 map. */
-+ boot_params.alt_mem_k = (ax == 15*1024) ? (dx << 6)+ax : ax;
-+
-+ return 0;
-+}
-+
-+static int detect_memory_88(void)
-+{
-+ u16 ax;
-+ u8 err;
-+
-+ ax = 0x8800;
-+ asm("stc; int $0x15; setc %0" : "=bcdm" (err), "+a" (ax));
-+
-+ boot_params.screen_info.ext_mem_k = ax;
-+
-+ return -err;
-+}
-+
-+int detect_memory(void)
-+{
-+ if (detect_memory_e820() > 0)
-+ return 0;
-+
-+ if (!detect_memory_e801())
-+ return 0;
-+
-+ return detect_memory_88();
-+}
-diff -puN /dev/null arch/i386/boot/pm.c
---- /dev/null
-+++ a/arch/i386/boot/pm.c
-@@ -0,0 +1,170 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/pm.c
-+ *
-+ * Prepare the machine for transition to protected mode.
-+ */
-+
-+#include "boot.h"
-+#include <asm/segment.h>
-+
-+/*
-+ * Invoke the realmode switch hook if present; otherwise
-+ * disable all interrupts.
-+ */
-+static void realmode_switch_hook(void)
-+{
-+ if (boot_params.hdr.realmode_swtch) {
-+ asm volatile("lcallw *%0"
-+ : : "m" (boot_params.hdr.realmode_swtch)
-+ : "eax", "ebx", "ecx", "edx");
-+ } else {
-+ asm volatile("cli");
-+ outb(0x80, 0x70); /* Disable NMI */
-+ io_delay();
-+ }
-+}
-+
-+/*
-+ * A zImage kernel is loaded at 0x10000 but wants to run at 0x1000.
-+ * A bzImage kernel is loaded and runs at 0x100000.
-+ */
-+static void move_kernel_around(void)
-+{
-+ /* Note: rely on the compile-time option here rather than
-+ the LOADED_HIGH flag. The Qemu kernel loader unconditionally
-+ sets the loadflags to zero. */
-+#ifndef __BIG_KERNEL__
-+ u16 dst_seg, src_seg;
-+ u32 syssize;
-+
-+ dst_seg = 0x1000 >> 4;
-+ src_seg = 0x10000 >> 4;
-+ syssize = boot_params.hdr.syssize; /* Size in 16-byte paragraps */
-+
-+ while (syssize) {
-+ int paras = (syssize >= 0x1000) ? 0x1000 : syssize;
-+ int dwords = paras << 2;
-+
-+ asm volatile("pushw %%es ; "
-+ "pushw %%ds ; "
-+ "movw %1,%%es ; "
-+ "movw %2,%%ds ; "
-+ "xorw %%di,%%di ; "
-+ "xorw %%si,%%si ; "
-+ "rep;movsl ; "
-+ "popw %%ds ; "
-+ "popw %%es"
-+ : "+c" (dwords)
-+ : "rm" (dst_seg), "rm" (src_seg)
-+ : "esi", "edi");
-+
-+ syssize -= paras;
-+ dst_seg += paras;
-+ src_seg += paras;
-+ }
-+#endif
-+}
-+
-+/*
-+ * Disable all interrupts at the legacy PIC.
-+ */
-+static void mask_all_interrupts(void)
-+{
-+ outb(0xff, 0xa1); /* Mask all interrupts on the seconday PIC */
-+ io_delay();
-+ outb(0xfb, 0x21); /* Mask all but cascade on the primary PIC */
-+ io_delay();
-+}
-+
-+/*
-+ * Reset IGNNE# if asserted in the FPU.
-+ */
-+static void reset_coprocessor(void)
-+{
-+ outb(0, 0xf0);
-+ io_delay();
-+ outb(0, 0xf1);
-+ io_delay();
-+}
-+
-+/*
-+ * Set up the GDT
-+ */
-+#define GDT_ENTRY(flags,base,limit) \
-+ (((u64)(base & 0xff000000) << 32) | \
-+ ((u64)flags << 40) | \
-+ ((u64)(limit & 0x00ff0000) << 32) | \
-+ ((u64)(base & 0x00ffff00) << 16) | \
-+ ((u64)(limit & 0x0000ffff)))
-+
-+struct gdt_ptr {
-+ u16 len;
-+ u32 ptr;
-+} __attribute__((packed));
-+
-+static void setup_gdt(void)
-+{
-+ /* There are machines which are known to not boot with the GDT
-+ being 8-byte unaligned. Intel recommends 16 byte alignment. */
-+ static const u64 boot_gdt[] __attribute__((aligned(16))) = {
-+ /* CS: code, read/execute, 4 GB, base 0 */
-+ [GDT_ENTRY_BOOT_CS] = GDT_ENTRY(0xc09b, 0, 0xfffff),
-+ /* DS: data, read/write, 4 GB, base 0 */
-+ [GDT_ENTRY_BOOT_DS] = GDT_ENTRY(0xc093, 0, 0xfffff),
-+ };
-+ struct gdt_ptr gdt;
-+
-+ gdt.len = sizeof(boot_gdt)-1;
-+ gdt.ptr = (u32)&boot_gdt + (ds() << 4);
-+
-+ asm volatile("lgdtl %0" : : "m" (gdt));
-+}
-+
-+/*
-+ * Set up the IDT
-+ */
-+static void setup_idt(void)
-+{
-+ static const struct gdt_ptr null_idt = {0, 0};
-+ asm volatile("lidtl %0" : : "m" (null_idt));
-+}
-+
-+/*
-+ * Actual invocation sequence
-+ */
-+void go_to_protected_mode(void)
-+{
-+ /* Hook before leaving real mode, also disables interrupts */
-+ realmode_switch_hook();
-+
-+ /* Move the kernel/setup to their final resting places */
-+ move_kernel_around();
-+
-+ /* Enable the A20 gate */
-+ if (enable_a20()) {
-+ puts("A20 gate not responding, unable to boot...\n");
-+ die();
-+ }
-+
-+ /* Reset coprocessor (IGNNE#) */
-+ reset_coprocessor();
-+
-+ /* Mask all interrupts in the PIC */
-+ mask_all_interrupts();
-+
-+ /* Actual transition to protected mode... */
-+ setup_idt();
-+ setup_gdt();
-+ protected_mode_jump(boot_params.hdr.code32_start,
-+ (u32)&boot_params + (ds() << 4));
-+}
-diff -puN /dev/null arch/i386/boot/pmjump.S
---- /dev/null
-+++ a/arch/i386/boot/pmjump.S
-@@ -0,0 +1,54 @@
-+/* ----------------------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/pmjump.S
-+ *
-+ * The actual transition into protected mode
-+ */
-+
-+#include <asm/boot.h>
-+#include <asm/segment.h>
-+
-+ .text
-+
-+ .globl protected_mode_jump
-+ .type protected_mode_jump, @function
-+
-+ .code16
-+
-+/*
-+ * void protected_mode_jump(u32 entrypoint, u32 bootparams);
-+ */
-+protected_mode_jump:
-+ xorl %ebx, %ebx # Flag to indicate this is a boot
-+ movl %edx, %esi # Pointer to boot_params table
-+ movl %eax, 2f # Patch ljmpl instruction
-+ jmp 1f # Short jump to flush instruction q.
-+
-+1:
-+ movw $__BOOT_DS, %cx
-+
-+ movl %cr0, %edx
-+ orb $1, %dl # Protected mode (PE) bit
-+ movl %edx, %cr0
-+
-+ movw %cx, %ds
-+ movw %cx, %es
-+ movw %cx, %fs
-+ movw %cx, %gs
-+ movw %cx, %ss
-+
-+ # Jump to the 32-bit entrypoint
-+ .byte 0x66, 0xea # ljmpl opcode
-+2: .long 0 # offset
-+ .word __BOOT_CS # segment
-+
-+ .size protected_mode_jump, .-protected_mode_jump
-diff -puN /dev/null arch/i386/boot/printf.c
---- /dev/null
-+++ a/arch/i386/boot/printf.c
-@@ -0,0 +1,331 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/printf.c
-+ *
-+ * Oh, it's a waste of space, but oh-so-yummy for debugging. This
-+ * version of printf() does not include 64-bit support. "Live with
-+ * it."
-+ *
-+ */
-+
-+#include "boot.h"
-+
-+static inline int isdigit(int ch)
-+{
-+ return (ch >= '0') && (ch <= '9');
-+}
-+
-+static int skip_atoi(const char **s)
-+{
-+ int i = 0;
-+
-+ while (isdigit(**s))
-+ i = i * 10 + *((*s)++) - '0';
-+ return i;
-+}
-+
-+unsigned int atou(const char *s)
-+{
-+ unsigned int i = 0;
-+ while (isdigit(*s))
-+ i = i * 10 + (*s++ - '0');
-+ return i;
-+}
-+
-+static int strnlen(const char *s, int maxlen)
-+{
-+ const char *es = s;
-+ while (*es && maxlen) {
-+ es++;
-+ maxlen--;
-+ }
-+
-+ return (es - s);
-+}
-+
-+#define ZEROPAD 1 /* pad with zero */
-+#define SIGN 2 /* unsigned/signed long */
-+#define PLUS 4 /* show plus */
-+#define SPACE 8 /* space if plus */
-+#define LEFT 16 /* left justified */
-+#define SPECIAL 32 /* 0x */
-+#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
-+
-+#define do_div(n,base) ({ \
-+int __res; \
-+__res = ((unsigned long) n) % (unsigned) base; \
-+n = ((unsigned long) n) / (unsigned) base; \
-+__res; })
-+
-+static char *number(char *str, long num, int base, int size, int precision,
-+ int type)
-+{
-+ char c, sign, tmp[66];
-+ const char *digits = "0123456789abcdefghijklmnopqrstuvwxyz";
-+ int i;
-+
-+ if (type & LARGE)
-+ digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
-+ if (type & LEFT)
-+ type &= ~ZEROPAD;
-+ if (base < 2 || base > 36)
-+ return 0;
-+ c = (type & ZEROPAD) ? '0' : ' ';
-+ sign = 0;
-+ if (type & SIGN) {
-+ if (num < 0) {
-+ sign = '-';
-+ num = -num;
-+ size--;
-+ } else if (type & PLUS) {
-+ sign = '+';
-+ size--;
-+ } else if (type & SPACE) {
-+ sign = ' ';
-+ size--;
-+ }
-+ }
-+ if (type & SPECIAL) {
-+ if (base == 16)
-+ size -= 2;
-+ else if (base == 8)
-+ size--;
-+ }
-+ i = 0;
-+ if (num == 0)
-+ tmp[i++] = '0';
-+ else
-+ while (num != 0)
-+ tmp[i++] = digits[do_div(num, base)];
-+ if (i > precision)
-+ precision = i;
-+ size -= precision;
-+ if (!(type & (ZEROPAD + LEFT)))
-+ while (size-- > 0)
-+ *str++ = ' ';
-+ if (sign)
-+ *str++ = sign;
-+ if (type & SPECIAL) {
-+ if (base == 8)
-+ *str++ = '0';
-+ else if (base == 16) {
-+ *str++ = '0';
-+ *str++ = digits[33];
-+ }
-+ }
-+ if (!(type & LEFT))
-+ while (size-- > 0)
-+ *str++ = c;
-+ while (i < precision--)
-+ *str++ = '0';
-+ while (i-- > 0)
-+ *str++ = tmp[i];
-+ while (size-- > 0)
-+ *str++ = ' ';
-+ return str;
-+}
-+
-+int vsprintf(char *buf, const char *fmt, va_list args)
-+{
-+ int len;
-+ unsigned long num;
-+ int i, base;
-+ char *str;
-+ const char *s;
-+
-+ int flags; /* flags to number() */
-+
-+ int field_width; /* width of output field */
-+ int precision; /* min. # of digits for integers; max
-+ number of chars for from string */
-+ int qualifier; /* 'h', 'l', or 'L' for integer fields */
-+
-+ for (str = buf; *fmt; ++fmt) {
-+ if (*fmt != '%') {
-+ *str++ = *fmt;
-+ continue;
-+ }
-+
-+ /* process flags */
-+ flags = 0;
-+ repeat:
-+ ++fmt; /* this also skips first '%' */
-+ switch (*fmt) {
-+ case '-':
-+ flags |= LEFT;
-+ goto repeat;
-+ case '+':
-+ flags |= PLUS;
-+ goto repeat;
-+ case ' ':
-+ flags |= SPACE;
-+ goto repeat;
-+ case '#':
-+ flags |= SPECIAL;
-+ goto repeat;
-+ case '0':
-+ flags |= ZEROPAD;
-+ goto repeat;
-+ }
-+
-+ /* get field width */
-+ field_width = -1;
-+ if (isdigit(*fmt))
-+ field_width = skip_atoi(&fmt);
-+ else if (*fmt == '*') {
-+ ++fmt;
-+ /* it's the next argument */
-+ field_width = va_arg(args, int);
-+ if (field_width < 0) {
-+ field_width = -field_width;
-+ flags |= LEFT;
-+ }
-+ }
-+
-+ /* get the precision */
-+ precision = -1;
-+ if (*fmt == '.') {
-+ ++fmt;
-+ if (isdigit(*fmt))
-+ precision = skip_atoi(&fmt);
-+ else if (*fmt == '*') {
-+ ++fmt;
-+ /* it's the next argument */
-+ precision = va_arg(args, int);
-+ }
-+ if (precision < 0)
-+ precision = 0;
-+ }
-+
-+ /* get the conversion qualifier */
-+ qualifier = -1;
-+ if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L') {
-+ qualifier = *fmt;
-+ ++fmt;
-+ }
-+
-+ /* default base */
-+ base = 10;
-+
-+ switch (*fmt) {
-+ case 'c':
-+ if (!(flags & LEFT))
-+ while (--field_width > 0)
-+ *str++ = ' ';
-+ *str++ = (unsigned char)va_arg(args, int);
-+ while (--field_width > 0)
-+ *str++ = ' ';
-+ continue;
-+
-+ case 's':
-+ s = va_arg(args, char *);
-+ len = strnlen(s, precision);
-+
-+ if (!(flags & LEFT))
-+ while (len < field_width--)
-+ *str++ = ' ';
-+ for (i = 0; i < len; ++i)
-+ *str++ = *s++;
-+ while (len < field_width--)
-+ *str++ = ' ';
-+ continue;
-+
-+ case 'p':
-+ if (field_width == -1) {
-+ field_width = 2 * sizeof(void *);
-+ flags |= ZEROPAD;
-+ }
-+ str = number(str,
-+ (unsigned long)va_arg(args, void *), 16,
-+ field_width, precision, flags);
-+ continue;
-+
-+ case 'n':
-+ if (qualifier == 'l') {
-+ long *ip = va_arg(args, long *);
-+ *ip = (str - buf);
-+ } else {
-+ int *ip = va_arg(args, int *);
-+ *ip = (str - buf);
-+ }
-+ continue;
-+
-+ case '%':
-+ *str++ = '%';
-+ continue;
-+
-+ /* integer number formats - set up the flags and "break" */
-+ case 'o':
-+ base = 8;
-+ break;
-+
-+ case 'X':
-+ flags |= LARGE;
-+ case 'x':
-+ base = 16;
-+ break;
-+
-+ case 'd':
-+ case 'i':
-+ flags |= SIGN;
-+ case 'u':
-+ break;
-+
-+ default:
-+ *str++ = '%';
-+ if (*fmt)
-+ *str++ = *fmt;
-+ else
-+ --fmt;
-+ continue;
-+ }
-+ if (qualifier == 'l')
-+ num = va_arg(args, unsigned long);
-+ else if (qualifier == 'h') {
-+ num = (unsigned short)va_arg(args, int);
-+ if (flags & SIGN)
-+ num = (short)num;
-+ } else if (flags & SIGN)
-+ num = va_arg(args, int);
-+ else
-+ num = va_arg(args, unsigned int);
-+ str = number(str, num, base, field_width, precision, flags);
-+ }
-+ *str = '\0';
-+ return str - buf;
-+}
-+
-+int sprintf(char *buf, const char *fmt, ...)
-+{
-+ va_list args;
-+ int i;
-+
-+ va_start(args, fmt);
-+ i = vsprintf(buf, fmt, args);
-+ va_end(args);
-+ return i;
-+}
-+
-+int printf(const char *fmt, ...)
-+{
-+ char printf_buf[1024];
-+ va_list args;
-+ int printed;
-+
-+ va_start(args, fmt);
-+ printed = vsprintf(printf_buf, fmt, args);
-+ va_end(args);
-+
-+ puts(printf_buf);
-+
-+ return printed;
-+}
-diff -puN arch/i386/boot/setup.S~git-newsetup /dev/null
---- a/arch/i386/boot/setup.S
-+++ /dev/null
-@@ -1,1075 +0,0 @@
--/*
-- * setup.S Copyright (C) 1991, 1992 Linus Torvalds
-- *
-- * setup.s is responsible for getting the system data from the BIOS,
-- * and putting them into the appropriate places in system memory.
-- * both setup.s and system has been loaded by the bootblock.
-- *
-- * This code asks the bios for memory/disk/other parameters, and
-- * puts them in a "safe" place: 0x90000-0x901FF, ie where the
-- * boot-block used to be. It is then up to the protected mode
-- * system to read them from there before the area is overwritten
-- * for buffer-blocks.
-- *
-- * Move PS/2 aux init code to psaux.c
-- * (troyer@saifr00.cfsat.Honeywell.COM) 03Oct92
-- *
-- * some changes and additional features by Christoph Niemann,
-- * March 1993/June 1994 (Christoph.Niemann@linux.org)
-- *
-- * add APM BIOS checking by Stephen Rothwell, May 1994
-- * (sfr@canb.auug.org.au)
-- *
-- * High load stuff, initrd support and position independency
-- * by Hans Lermen & Werner Almesberger, February 1996
-- * <lermen@elserv.ffm.fgan.de>, <almesber@lrc.epfl.ch>
-- *
-- * Video handling moved to video.S by Martin Mares, March 1996
-- * <mj@k332.feld.cvut.cz>
-- *
-- * Extended memory detection scheme retwiddled by orc@pell.chi.il.us (david
-- * parsons) to avoid loadlin confusion, July 1997
-- *
-- * Transcribed from Intel (as86) -> AT&T (gas) by Chris Noe, May 1999.
-- * <stiker@northlink.com>
-- *
-- * Fix to work around buggy BIOSes which don't use carry bit correctly
-- * and/or report extended memory in CX/DX for e801h memory size detection
-- * call. As a result the kernel got wrong figures. The int15/e801h docs
-- * from Ralf Brown interrupt list seem to indicate AX/BX should be used
-- * anyway. So to avoid breaking many machines (presumably there was a reason
-- * to orginally use CX/DX instead of AX/BX), we do a kludge to see
-- * if CX/DX have been changed in the e801 call and if so use AX/BX .
-- * Michael Miller, April 2001 <michaelm@mjmm.org>
-- *
-- * New A20 code ported from SYSLINUX by H. Peter Anvin. AMD Elan bugfixes
-- * by Robert Schwebel, December 2001 <robert@schwebel.de>
-- */
--
--#include <asm/segment.h>
--#include <linux/utsrelease.h>
--#include <linux/compile.h>
--#include <asm/boot.h>
--#include <asm/e820.h>
--#include <asm/page.h>
--#include <asm/setup.h>
--
--/* Signature words to ensure LILO loaded us right */
--#define SIG1 0xAA55
--#define SIG2 0x5A5A
--
--INITSEG = DEF_INITSEG # 0x9000, we move boot here, out of the way
--SYSSEG = DEF_SYSSEG # 0x1000, system loaded at 0x10000 (65536).
--SETUPSEG = DEF_SETUPSEG # 0x9020, this is the current segment
-- # ... and the former contents of CS
--
--DELTA_INITSEG = SETUPSEG - INITSEG # 0x0020
--
--.code16
--.globl begtext, begdata, begbss, endtext, enddata, endbss
--
--.text
--begtext:
--.data
--begdata:
--.bss
--begbss:
--.text
--
--start:
-- jmp trampoline
--
--# This is the setup header, and it must start at %cs:2 (old 0x9020:2)
--
-- .ascii "HdrS" # header signature
-- .word 0x0206 # header version number (>= 0x0105)
-- # or else old loadlin-1.5 will fail)
--realmode_swtch: .word 0, 0 # default_switch, SETUPSEG
--start_sys_seg: .word SYSSEG
-- .word kernel_version # pointing to kernel version string
-- # above section of header is compatible
-- # with loadlin-1.5 (header v1.5). Don't
-- # change it.
--
--type_of_loader: .byte 0 # = 0, old one (LILO, Loadlin,
-- # Bootlin, SYSLX, bootsect...)
-- # See Documentation/i386/boot.txt for
-- # assigned ids
--
--# flags, unused bits must be zero (RFU) bit within loadflags
--loadflags:
--LOADED_HIGH = 1 # If set, the kernel is loaded high
--CAN_USE_HEAP = 0x80 # If set, the loader also has set
-- # heap_end_ptr to tell how much
-- # space behind setup.S can be used for
-- # heap purposes.
-- # Only the loader knows what is free
--#ifndef __BIG_KERNEL__
-- .byte 0
--#else
-- .byte LOADED_HIGH
--#endif
--
--setup_move_size: .word 0x8000 # size to move, when setup is not
-- # loaded at 0x90000. We will move setup
-- # to 0x90000 then just before jumping
-- # into the kernel. However, only the
-- # loader knows how much data behind
-- # us also needs to be loaded.
--
--code32_start: # here loaders can put a different
-- # start address for 32-bit code.
--#ifndef __BIG_KERNEL__
-- .long 0x1000 # 0x1000 = default for zImage
--#else
-- .long 0x100000 # 0x100000 = default for big kernel
--#endif
--
--ramdisk_image: .long 0 # address of loaded ramdisk image
-- # Here the loader puts the 32-bit
-- # address where it loaded the image.
-- # This only will be read by the kernel.
--
--ramdisk_size: .long 0 # its size in bytes
--
--bootsect_kludge:
-- .long 0 # obsolete
--
--heap_end_ptr: .word modelist+1024 # (Header version 0x0201 or later)
-- # space from here (exclusive) down to
-- # end of setup code can be used by setup
-- # for local heap purposes.
--
--pad1: .word 0
--cmd_line_ptr: .long 0 # (Header version 0x0202 or later)
-- # If nonzero, a 32-bit pointer
-- # to the kernel command line.
-- # The command line should be
-- # located between the start of
-- # setup and the end of low
-- # memory (0xa0000), or it may
-- # get overwritten before it
-- # gets read. If this field is
-- # used, there is no longer
-- # anything magical about the
-- # 0x90000 segment; the setup
-- # can be located anywhere in
-- # low memory 0x10000 or higher.
--
--ramdisk_max: .long (-__PAGE_OFFSET-(512 << 20)-1) & 0x7fffffff
-- # (Header version 0x0203 or later)
-- # The highest safe address for
-- # the contents of an initrd
--
--kernel_alignment: .long CONFIG_PHYSICAL_ALIGN #physical addr alignment
-- #required for protected mode
-- #kernel
--#ifdef CONFIG_RELOCATABLE
--relocatable_kernel: .byte 1
--#else
--relocatable_kernel: .byte 0
--#endif
--pad2: .byte 0
--pad3: .word 0
--
--cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line,
-- #added with boot protocol
-- #version 2.06
--
--trampoline: call start_of_setup
-- .align 16
-- # The offset at this point is 0x240
-- .space (0xeff-0x240+1) # E820 & EDD space (ending at 0xeff)
--# End of setup header #####################################################
--
--start_of_setup:
--# Bootlin depends on this being done early
-- movw $0x01500, %ax
-- movb $0x81, %dl
-- int $0x13
--
--#ifdef SAFE_RESET_DISK_CONTROLLER
--# Reset the disk controller.
-- movw $0x0000, %ax
-- movb $0x80, %dl
-- int $0x13
--#endif
--
--# Set %ds = %cs, we know that SETUPSEG = %cs at this point
-- movw %cs, %ax # aka SETUPSEG
-- movw %ax, %ds
--# Check signature at end of setup
-- cmpw $SIG1, setup_sig1
-- jne bad_sig
--
-- cmpw $SIG2, setup_sig2
-- jne bad_sig
--
-- jmp good_sig1
--
--# Routine to print asciiz string at ds:si
--prtstr:
-- lodsb
-- andb %al, %al
-- jz fin
--
-- call prtchr
-- jmp prtstr
--
--fin: ret
--
--# Space printing
--prtsp2: call prtspc # Print double space
--prtspc: movb $0x20, %al # Print single space (note: fall-thru)
--
--# Part of above routine, this one just prints ascii al
--prtchr: pushw %ax
-- pushw %cx
-- movw $7,%bx
-- movw $0x01, %cx
-- movb $0x0e, %ah
-- int $0x10
-- popw %cx
-- popw %ax
-- ret
--
--beep: movb $0x07, %al
-- jmp prtchr
--
--no_sig_mess: .string "No setup signature found ..."
--
--good_sig1:
-- jmp good_sig
--
--# We now have to find the rest of the setup code/data
--bad_sig:
-- movw %cs, %ax # SETUPSEG
-- subw $DELTA_INITSEG, %ax # INITSEG
-- movw %ax, %ds
-- xorb %bh, %bh
-- movb (497), %bl # get setup sect from bootsect
-- subw $4, %bx # LILO loads 4 sectors of setup
-- shlw $8, %bx # convert to words (1sect=2^8 words)
-- movw %bx, %cx
-- shrw $3, %bx # convert to segment
-- addw $SYSSEG, %bx
-- movw %bx, %cs:start_sys_seg
--# Move rest of setup code/data to here
-- movw $2048, %di # four sectors loaded by LILO
-- subw %si, %si
-- pushw %cs
-- popw %es
-- movw $SYSSEG, %ax
-- movw %ax, %ds
-- rep
-- movsw
-- movw %cs, %ax # aka SETUPSEG
-- movw %ax, %ds
-- cmpw $SIG1, setup_sig1
-- jne no_sig
--
-- cmpw $SIG2, setup_sig2
-- jne no_sig
--
-- jmp good_sig
--
--no_sig:
-- lea no_sig_mess, %si
-- call prtstr
--
--no_sig_loop:
-- hlt
-- jmp no_sig_loop
--
--good_sig:
-- movw %cs, %ax # aka SETUPSEG
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- movw %ax, %ds
--# Check if an old loader tries to load a big-kernel
-- testb $LOADED_HIGH, %cs:loadflags # Do we have a big kernel?
-- jz loader_ok # No, no danger for old loaders.
--
-- cmpb $0, %cs:type_of_loader # Do we have a loader that
-- # can deal with us?
-- jnz loader_ok # Yes, continue.
--
-- pushw %cs # No, we have an old loader,
-- popw %ds # die.
-- lea loader_panic_mess, %si
-- call prtstr
--
-- jmp no_sig_loop
--
--loader_panic_mess: .string "Wrong loader, giving up..."
--
--# check minimum cpuid
--# we do this here because it is the last place we can actually
--# show a user visible error message. Later the video modus
--# might be already messed up.
--loader_ok:
-- call verify_cpu
-- testl %eax,%eax
-- jz cpu_ok
-- movw %cs,%ax # aka SETUPSEG
-- movw %ax,%ds
-- lea cpu_panic_mess,%si
-- call prtstr
--1: jmp 1b
--
--cpu_panic_mess:
-- .asciz "PANIC: CPU too old for this kernel."
--
--#include "../kernel/verify_cpu.S"
--
--cpu_ok:
--# Get memory size (extended mem, kB)
--
-- xorl %eax, %eax
-- movl %eax, (0x1e0)
--#ifndef STANDARD_MEMORY_BIOS_CALL
-- movb %al, (E820NR)
--# Try three different memory detection schemes. First, try
--# e820h, which lets us assemble a memory map, then try e801h,
--# which returns a 32-bit memory size, and finally 88h, which
--# returns 0-64m
--
--# method E820H:
--# the memory map from hell. e820h returns memory classified into
--# a whole bunch of different types, and allows memory holes and
--# everything. We scan through this memory map and build a list
--# of the first 32 memory areas, which we return at [E820MAP].
--# This is documented at http://www.acpi.info/, in the ACPI 2.0 specification.
--
--#define SMAP 0x534d4150
--
--meme820:
-- xorl %ebx, %ebx # continuation counter
-- movw $E820MAP, %di # point into the whitelist
-- # so we can have the bios
-- # directly write into it.
--
--jmpe820:
-- movl $0x0000e820, %eax # e820, upper word zeroed
-- movl $SMAP, %edx # ascii 'SMAP'
-- movl $20, %ecx # size of the e820rec
-- pushw %ds # data record.
-- popw %es
-- int $0x15 # make the call
-- jc bail820 # fall to e801 if it fails
--
-- cmpl $SMAP, %eax # check the return is `SMAP'
-- jne bail820 # fall to e801 if it fails
--
--# cmpl $1, 16(%di) # is this usable memory?
--# jne again820
--
-- # If this is usable memory, we save it by simply advancing %di by
-- # sizeof(e820rec).
-- #
--good820:
-- movb (E820NR), %al # up to 128 entries
-- cmpb $E820MAX, %al
-- jae bail820
--
-- incb (E820NR)
-- movw %di, %ax
-- addw $20, %ax
-- movw %ax, %di
--again820:
-- cmpl $0, %ebx # check to see if
-- jne jmpe820 # %ebx is set to EOF
--bail820:
--
--
--# method E801H:
--# memory size is in 1k chunksizes, to avoid confusing loadlin.
--# we store the 0xe801 memory size in a completely different place,
--# because it will most likely be longer than 16 bits.
--# (use 1e0 because that's what Larry Augustine uses in his
--# alternative new memory detection scheme, and it's sensible
--# to write everything into the same place.)
--
--meme801:
-- stc # fix to work around buggy
-- xorw %cx,%cx # BIOSes which don't clear/set
-- xorw %dx,%dx # carry on pass/error of
-- # e801h memory size call
-- # or merely pass cx,dx though
-- # without changing them.
-- movw $0xe801, %ax
-- int $0x15
-- jc mem88
--
-- cmpw $0x0, %cx # Kludge to handle BIOSes
-- jne e801usecxdx # which report their extended
-- cmpw $0x0, %dx # memory in AX/BX rather than
-- jne e801usecxdx # CX/DX. The spec I have read
-- movw %ax, %cx # seems to indicate AX/BX
-- movw %bx, %dx # are more reasonable anyway...
--
--e801usecxdx:
-- andl $0xffff, %edx # clear sign extend
-- shll $6, %edx # and go from 64k to 1k chunks
-- movl %edx, (0x1e0) # store extended memory size
-- andl $0xffff, %ecx # clear sign extend
-- addl %ecx, (0x1e0) # and add lower memory into
-- # total size.
--
--# Ye Olde Traditional Methode. Returns the memory size (up to 16mb or
--# 64mb, depending on the bios) in ax.
--mem88:
--
--#endif
-- movb $0x88, %ah
-- int $0x15
-- movw %ax, (2)
--
--# Set the keyboard repeat rate to the max
-- movw $0x0305, %ax
-- xorw %bx, %bx
-- int $0x16
--
--# Check for video adapter and its parameters and allow the
--# user to browse video modes.
-- call video # NOTE: we need %ds pointing
-- # to bootsector
--
--# Get hd0 data...
-- xorw %ax, %ax
-- movw %ax, %ds
-- ldsw (4 * 0x41), %si
-- movw %cs, %ax # aka SETUPSEG
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- pushw %ax
-- movw %ax, %es
-- movw $0x0080, %di
-- movw $0x10, %cx
-- pushw %cx
-- cld
-- rep
-- movsb
--# Get hd1 data...
-- xorw %ax, %ax
-- movw %ax, %ds
-- ldsw (4 * 0x46), %si
-- popw %cx
-- popw %es
-- movw $0x0090, %di
-- rep
-- movsb
--# Check that there IS a hd1 :-)
-- movw $0x01500, %ax
-- movb $0x81, %dl
-- int $0x13
-- jc no_disk1
--
-- cmpb $3, %ah
-- je is_disk1
--
--no_disk1:
-- movw %cs, %ax # aka SETUPSEG
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- movw %ax, %es
-- movw $0x0090, %di
-- movw $0x10, %cx
-- xorw %ax, %ax
-- cld
-- rep
-- stosb
--is_disk1:
--# check for Micro Channel (MCA) bus
-- movw %cs, %ax # aka SETUPSEG
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- movw %ax, %ds
-- xorw %ax, %ax
-- movw %ax, (0xa0) # set table length to 0
-- movb $0xc0, %ah
-- stc
-- int $0x15 # moves feature table to es:bx
-- jc no_mca
--
-- pushw %ds
-- movw %es, %ax
-- movw %ax, %ds
-- movw %cs, %ax # aka SETUPSEG
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- movw %ax, %es
-- movw %bx, %si
-- movw $0xa0, %di
-- movw (%si), %cx
-- addw $2, %cx # table length is a short
-- cmpw $0x10, %cx
-- jc sysdesc_ok
--
-- movw $0x10, %cx # we keep only first 16 bytes
--sysdesc_ok:
-- rep
-- movsb
-- popw %ds
--no_mca:
--#ifdef CONFIG_X86_VOYAGER
-- movb $0xff, 0x40 # flag on config found
-- movb $0xc0, %al
-- mov $0xff, %ah
-- int $0x15 # put voyager config info at es:di
-- jc no_voyager
-- movw $0x40, %si # place voyager info in apm table
-- cld
-- movw $7, %cx
--voyager_rep:
-- movb %es:(%di), %al
-- movb %al,(%si)
-- incw %di
-- incw %si
-- decw %cx
-- jnz voyager_rep
--no_voyager:
--#endif
--# Check for PS/2 pointing device
-- movw %cs, %ax # aka SETUPSEG
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- movw %ax, %ds
-- movb $0, (0x1ff) # default is no pointing device
-- int $0x11 # int 0x11: equipment list
-- testb $0x04, %al # check if mouse installed
-- jz no_psmouse
--
-- movb $0xAA, (0x1ff) # device present
--no_psmouse:
--
--#if defined(CONFIG_X86_SPEEDSTEP_SMI) || defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
-- movl $0x0000E980, %eax # IST Support
-- movl $0x47534943, %edx # Request value
-- int $0x15
--
-- movl %eax, (96)
-- movl %ebx, (100)
-- movl %ecx, (104)
-- movl %edx, (108)
--#endif
--
--#if defined(CONFIG_APM) || defined(CONFIG_APM_MODULE)
--# Then check for an APM BIOS...
-- # %ds points to the bootsector
-- movw $0, 0x40 # version = 0 means no APM BIOS
-- movw $0x05300, %ax # APM BIOS installation check
-- xorw %bx, %bx
-- int $0x15
-- jc done_apm_bios # Nope, no APM BIOS
--
-- cmpw $0x0504d, %bx # Check for "PM" signature
-- jne done_apm_bios # No signature, no APM BIOS
--
-- andw $0x02, %cx # Is 32 bit supported?
-- je done_apm_bios # No 32-bit, no (good) APM BIOS
--
-- movw $0x05304, %ax # Disconnect first just in case
-- xorw %bx, %bx
-- int $0x15 # ignore return code
-- movw $0x05303, %ax # 32 bit connect
-- xorl %ebx, %ebx
-- xorw %cx, %cx # paranoia :-)
-- xorw %dx, %dx # ...
-- xorl %esi, %esi # ...
-- xorw %di, %di # ...
-- int $0x15
-- jc no_32_apm_bios # Ack, error.
--
-- movw %ax, (66) # BIOS code segment
-- movl %ebx, (68) # BIOS entry point offset
-- movw %cx, (72) # BIOS 16 bit code segment
-- movw %dx, (74) # BIOS data segment
-- movl %esi, (78) # BIOS code segment lengths
-- movw %di, (82) # BIOS data segment length
--# Redo the installation check as the 32 bit connect
--# modifies the flags returned on some BIOSs
-- movw $0x05300, %ax # APM BIOS installation check
-- xorw %bx, %bx
-- xorw %cx, %cx # paranoia
-- int $0x15
-- jc apm_disconnect # error -> shouldn't happen
--
-- cmpw $0x0504d, %bx # check for "PM" signature
-- jne apm_disconnect # no sig -> shouldn't happen
--
-- movw %ax, (64) # record the APM BIOS version
-- movw %cx, (76) # and flags
-- jmp done_apm_bios
--
--apm_disconnect: # Tidy up
-- movw $0x05304, %ax # Disconnect
-- xorw %bx, %bx
-- int $0x15 # ignore return code
--
-- jmp done_apm_bios
--
--no_32_apm_bios:
-- andw $0xfffd, (76) # remove 32 bit support bit
--done_apm_bios:
--#endif
--
--#include "edd.S"
--
--# Now we want to move to protected mode ...
-- cmpw $0, %cs:realmode_swtch
-- jz rmodeswtch_normal
--
-- lcall *%cs:realmode_swtch
--
-- jmp rmodeswtch_end
--
--rmodeswtch_normal:
-- pushw %cs
-- call default_switch
--
--rmodeswtch_end:
--# Now we move the system to its rightful place ... but we check if we have a
--# big-kernel. In that case we *must* not move it ...
-- testb $LOADED_HIGH, %cs:loadflags
-- jz do_move0 # .. then we have a normal low
-- # loaded zImage
-- # .. or else we have a high
-- # loaded bzImage
-- jmp end_move # ... and we skip moving
--
--do_move0:
-- movw $0x100, %ax # start of destination segment
-- movw %cs, %bp # aka SETUPSEG
-- subw $DELTA_INITSEG, %bp # aka INITSEG
-- movw %cs:start_sys_seg, %bx # start of source segment
-- cld
--do_move:
-- movw %ax, %es # destination segment
-- incb %ah # instead of add ax,#0x100
-- movw %bx, %ds # source segment
-- addw $0x100, %bx
-- subw %di, %di
-- subw %si, %si
-- movw $0x800, %cx
-- rep
-- movsw
-- cmpw %bp, %bx # assume start_sys_seg > 0x200,
-- # so we will perhaps read one
-- # page more than needed, but
-- # never overwrite INITSEG
-- # because destination is a
-- # minimum one page below source
-- jb do_move
--
--end_move:
--# then we load the segment descriptors
-- movw %cs, %ax # aka SETUPSEG
-- movw %ax, %ds
--
--# Check whether we need to be downward compatible with version <=201
-- cmpl $0, cmd_line_ptr
-- jne end_move_self # loader uses version >=202 features
-- cmpb $0x20, type_of_loader
-- je end_move_self # bootsect loader, we know of it
--
--# Boot loader doesnt support boot protocol version 2.02.
--# If we have our code not at 0x90000, we need to move it there now.
--# We also then need to move the params behind it (commandline)
--# Because we would overwrite the code on the current IP, we move
--# it in two steps, jumping high after the first one.
-- movw %cs, %ax
-- cmpw $SETUPSEG, %ax
-- je end_move_self
--
-- cli # make sure we really have
-- # interrupts disabled !
-- # because after this the stack
-- # should not be used
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- movw %ss, %dx
-- cmpw %ax, %dx
-- jb move_self_1
--
-- addw $INITSEG, %dx
-- subw %ax, %dx # this will go into %ss after
-- # the move
--move_self_1:
-- movw %ax, %ds
-- movw $INITSEG, %ax # real INITSEG
-- movw %ax, %es
-- movw %cs:setup_move_size, %cx
-- std # we have to move up, so we use
-- # direction down because the
-- # areas may overlap
-- movw %cx, %di
-- decw %di
-- movw %di, %si
-- subw $move_self_here+0x200, %cx
-- rep
-- movsb
-- ljmp $SETUPSEG, $move_self_here
--
--move_self_here:
-- movw $move_self_here+0x200, %cx
-- rep
-- movsb
-- movw $SETUPSEG, %ax
-- movw %ax, %ds
-- movw %dx, %ss
--end_move_self: # now we are at the right place
--
--#
--# Enable A20. This is at the very best an annoying procedure.
--# A20 code ported from SYSLINUX 1.52-1.63 by H. Peter Anvin.
--# AMD Elan bug fix by Robert Schwebel.
--#
--
--#if defined(CONFIG_X86_ELAN)
-- movb $0x02, %al # alternate A20 gate
-- outb %al, $0x92 # this works on SC410/SC520
--a20_elan_wait:
-- call a20_test
-- jz a20_elan_wait
-- jmp a20_done
--#endif
--
--
--A20_TEST_LOOPS = 32 # Iterations per wait
--A20_ENABLE_LOOPS = 255 # Total loops to try
--
--
--#ifndef CONFIG_X86_VOYAGER
--a20_try_loop:
--
-- # First, see if we are on a system with no A20 gate.
--a20_none:
-- call a20_test
-- jnz a20_done
--
-- # Next, try the BIOS (INT 0x15, AX=0x2401)
--a20_bios:
-- movw $0x2401, %ax
-- pushfl # Be paranoid about flags
-- int $0x15
-- popfl
--
-- call a20_test
-- jnz a20_done
--
-- # Try enabling A20 through the keyboard controller
--#endif /* CONFIG_X86_VOYAGER */
--a20_kbc:
-- call empty_8042
--
--#ifndef CONFIG_X86_VOYAGER
-- call a20_test # Just in case the BIOS worked
-- jnz a20_done # but had a delayed reaction.
--#endif
--
-- movb $0xD1, %al # command write
-- outb %al, $0x64
-- call empty_8042
--
-- movb $0xDF, %al # A20 on
-- outb %al, $0x60
-- call empty_8042
--
--#ifndef CONFIG_X86_VOYAGER
-- # Wait until a20 really *is* enabled; it can take a fair amount of
-- # time on certain systems; Toshiba Tecras are known to have this
-- # problem.
--a20_kbc_wait:
-- xorw %cx, %cx
--a20_kbc_wait_loop:
-- call a20_test
-- jnz a20_done
-- loop a20_kbc_wait_loop
--
-- # Final attempt: use "configuration port A"
--a20_fast:
-- inb $0x92, %al # Configuration Port A
-- orb $0x02, %al # "fast A20" version
-- andb $0xFE, %al # don't accidentally reset
-- outb %al, $0x92
--
-- # Wait for configuration port A to take effect
--a20_fast_wait:
-- xorw %cx, %cx
--a20_fast_wait_loop:
-- call a20_test
-- jnz a20_done
-- loop a20_fast_wait_loop
--
-- # A20 is still not responding. Try frobbing it again.
-- #
-- decb (a20_tries)
-- jnz a20_try_loop
--
-- movw $a20_err_msg, %si
-- call prtstr
--
--a20_die:
-- hlt
-- jmp a20_die
--
--a20_tries:
-- .byte A20_ENABLE_LOOPS
--
--a20_err_msg:
-- .ascii "linux: fatal error: A20 gate not responding!"
-- .byte 13, 10, 0
--
-- # If we get here, all is good
--a20_done:
--
--#endif /* CONFIG_X86_VOYAGER */
--# set up gdt and idt and 32bit start address
-- lidt idt_48 # load idt with 0,0
-- xorl %eax, %eax # Compute gdt_base
-- movw %ds, %ax # (Convert %ds:gdt to a linear ptr)
-- shll $4, %eax
-- addl %eax, code32
-- addl $gdt, %eax
-- movl %eax, (gdt_48+2)
-- lgdt gdt_48 # load gdt with whatever is
-- # appropriate
--
--# make sure any possible coprocessor is properly reset..
-- xorw %ax, %ax
-- outb %al, $0xf0
-- call delay
--
-- outb %al, $0xf1
-- call delay
--
--# well, that went ok, I hope. Now we mask all interrupts - the rest
--# is done in init_IRQ().
-- movb $0xFF, %al # mask all interrupts for now
-- outb %al, $0xA1
-- call delay
--
-- movb $0xFB, %al # mask all irq's but irq2 which
-- outb %al, $0x21 # is cascaded
--
--# Well, that certainly wasn't fun :-(. Hopefully it works, and we don't
--# need no steenking BIOS anyway (except for the initial loading :-).
--# The BIOS-routine wants lots of unnecessary data, and it's less
--# "interesting" anyway. This is how REAL programmers do it.
--#
--# Well, now's the time to actually move into protected mode. To make
--# things as simple as possible, we do no register set-up or anything,
--# we let the gnu-compiled 32-bit programs do that. We just jump to
--# absolute address 0x1000 (or the loader supplied one),
--# in 32-bit protected mode.
--#
--# Note that the short jump isn't strictly needed, although there are
--# reasons why it might be a good idea. It won't hurt in any case.
-- movw $1, %ax # protected mode (PE) bit
-- lmsw %ax # This is it!
-- jmp flush_instr
--
--flush_instr:
-- xorw %bx, %bx # Flag to indicate a boot
-- xorl %esi, %esi # Pointer to real-mode code
-- movw %cs, %si
-- subw $DELTA_INITSEG, %si
-- shll $4, %esi # Convert to 32-bit pointer
--
--# jump to startup_32 in arch/i386/boot/compressed/head.S
--#
--# NOTE: For high loaded big kernels we need a
--# jmpi 0x100000,__BOOT_CS
--#
--# but we yet haven't reloaded the CS register, so the default size
--# of the target offset still is 16 bit.
--# However, using an operand prefix (0x66), the CPU will properly
--# take our 48 bit far pointer. (INTeL 80386 Programmer's Reference
--# Manual, Mixing 16-bit and 32-bit code, page 16-6)
--
-- .byte 0x66, 0xea # prefix + jmpi-opcode
--code32: .long startup_32 # will be set to %cs+startup_32
-- .word __BOOT_CS
--.code32
--startup_32:
-- movl $(__BOOT_DS), %eax
-- movl %eax, %ds
-- movl %eax, %es
-- movl %eax, %fs
-- movl %eax, %gs
-- movl %eax, %ss
--
-- xorl %eax, %eax
--1: incl %eax # check that A20 really IS enabled
-- movl %eax, 0x00000000 # loop forever if it isn't
-- cmpl %eax, 0x00100000
-- je 1b
--
-- # Jump to the 32bit entry point
-- jmpl *(code32_start - start + (DELTA_INITSEG << 4))(%esi)
--.code16
--
--# Here's a bunch of information about your current kernel..
--kernel_version: .ascii UTS_RELEASE
-- .ascii " ("
-- .ascii LINUX_COMPILE_BY
-- .ascii "@"
-- .ascii LINUX_COMPILE_HOST
-- .ascii ") "
-- .ascii UTS_VERSION
-- .byte 0
--
--# This is the default real mode switch routine.
--# to be called just before protected mode transition
--default_switch:
-- cli # no interrupts allowed !
-- movb $0x80, %al # disable NMI for bootup
-- # sequence
-- outb %al, $0x70
-- lret
--
--
--#ifndef CONFIG_X86_VOYAGER
--# This routine tests whether or not A20 is enabled. If so, it
--# exits with zf = 0.
--#
--# The memory address used, 0x200, is the int $0x80 vector, which
--# should be safe.
--
--A20_TEST_ADDR = 4*0x80
--
--a20_test:
-- pushw %cx
-- pushw %ax
-- xorw %cx, %cx
-- movw %cx, %fs # Low memory
-- decw %cx
-- movw %cx, %gs # High memory area
-- movw $A20_TEST_LOOPS, %cx
-- movw %fs:(A20_TEST_ADDR), %ax
-- pushw %ax
--a20_test_wait:
-- incw %ax
-- movw %ax, %fs:(A20_TEST_ADDR)
-- call delay # Serialize and make delay constant
-- cmpw %gs:(A20_TEST_ADDR+0x10), %ax
-- loope a20_test_wait
--
-- popw %fs:(A20_TEST_ADDR)
-- popw %ax
-- popw %cx
-- ret
--
--#endif /* CONFIG_X86_VOYAGER */
--
--# This routine checks that the keyboard command queue is empty
--# (after emptying the output buffers)
--#
--# Some machines have delusions that the keyboard buffer is always full
--# with no keyboard attached...
--#
--# If there is no keyboard controller, we will usually get 0xff
--# to all the reads. With each IO taking a microsecond and
--# a timeout of 100,000 iterations, this can take about half a
--# second ("delay" == outb to port 0x80). That should be ok,
--# and should also be plenty of time for a real keyboard controller
--# to empty.
--#
--
--empty_8042:
-- pushl %ecx
-- movl $100000, %ecx
--
--empty_8042_loop:
-- decl %ecx
-- jz empty_8042_end_loop
--
-- call delay
--
-- inb $0x64, %al # 8042 status port
-- testb $1, %al # output buffer?
-- jz no_output
--
-- call delay
-- inb $0x60, %al # read it
-- jmp empty_8042_loop
--
--no_output:
-- testb $2, %al # is input buffer full?
-- jnz empty_8042_loop # yes - loop
--empty_8042_end_loop:
-- popl %ecx
-- ret
--
--# Read the cmos clock. Return the seconds in al
--gettime:
-- pushw %cx
-- movb $0x02, %ah
-- int $0x1a
-- movb %dh, %al # %dh contains the seconds
-- andb $0x0f, %al
-- movb %dh, %ah
-- movb $0x04, %cl
-- shrb %cl, %ah
-- aad
-- popw %cx
-- ret
--
--# Delay is needed after doing I/O
--delay:
-- outb %al,$0x80
-- ret
--
--# Descriptor tables
--#
--# NOTE: The intel manual says gdt should be sixteen bytes aligned for
--# efficiency reasons. However, there are machines which are known not
--# to boot with misaligned GDTs, so alter this at your peril! If you alter
--# GDT_ENTRY_BOOT_CS (in asm/segment.h) remember to leave at least two
--# empty GDT entries (one for NULL and one reserved).
--#
--# NOTE: On some CPUs, the GDT must be 8 byte aligned. This is
--# true for the Voyager Quad CPU card which will not boot without
--# This directive. 16 byte aligment is recommended by intel.
--#
-- .align 16
--gdt:
-- .fill GDT_ENTRY_BOOT_CS,8,0
--
-- .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
-- .word 0 # base address = 0
-- .word 0x9A00 # code read/exec
-- .word 0x00CF # granularity = 4096, 386
-- # (+5th nibble of limit)
--
-- .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
-- .word 0 # base address = 0
-- .word 0x9200 # data read/write
-- .word 0x00CF # granularity = 4096, 386
-- # (+5th nibble of limit)
--gdt_end:
-- .align 4
--
-- .word 0 # alignment byte
--idt_48:
-- .word 0 # idt limit = 0
-- .word 0, 0 # idt base = 0L
--
-- .word 0 # alignment byte
--gdt_48:
-- .word gdt_end - gdt - 1 # gdt limit
-- .word 0, 0 # gdt base (filled in later)
--
--# Include video setup & detection code
--
--#include "video.S"
--
--# Setup signature -- must be last
--setup_sig1: .word SIG1
--setup_sig2: .word SIG2
--
--# After this point, there is some free space which is used by the video mode
--# handling code to store the temporary mode table (not used by the kernel).
--
--modelist:
--
--.text
--endtext:
--.data
--enddata:
--.bss
--endbss:
-diff -puN /dev/null arch/i386/boot/setup.ld
---- /dev/null
-+++ a/arch/i386/boot/setup.ld
-@@ -0,0 +1,54 @@
-+/*
-+ * setup.ld
-+ *
-+ * Linker script for the i386 setup code
-+ */
-+OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
-+OUTPUT_ARCH(i386)
-+ENTRY(_start)
-+
-+SECTIONS
-+{
-+ . = 0;
-+ .bstext : { *(.bstext) }
-+ .bsdata : { *(.bsdata) }
-+
-+ . = 497;
-+ .header : { *(.header) }
-+ .inittext : { *(.inittext) }
-+ .initdata : { *(.initdata) }
-+ .text : { *(.text*) }
-+
-+ . = ALIGN(16);
-+ .rodata : { *(.rodata*) }
-+
-+ .videocards : {
-+ video_cards = .;
-+ *(.videocards)
-+ video_cards_end = .;
-+ }
-+
-+ . = ALIGN(16);
-+ .data : { *(.data*) }
-+
-+ .signature : {
-+ setup_sig = .;
-+ LONG(0x5a5aaa55)
-+ }
-+
-+
-+ . = ALIGN(16);
-+ .bss :
-+ {
-+ __bss_start = .;
-+ *(.bss)
-+ __bss_end = .;
-+ }
-+ . = ALIGN(16);
-+ _end = .;
-+
-+ /DISCARD/ : { *(.note*) }
-+
-+ . = ASSERT(_end <= 0x8000, "Setup too big!");
-+ . = ASSERT(hdr == 0x1f1, "The setup header has the wrong offset!");
-+}
-diff -puN /dev/null arch/i386/boot/string.c
---- /dev/null
-+++ a/arch/i386/boot/string.c
-@@ -0,0 +1,34 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/string.c
-+ *
-+ * Very basic string functions
-+ */
-+
-+#include "boot.h"
-+#include <linux/edd.h>
-+
-+int strcmp(const char *str1, const char *str2)
-+{
-+ const unsigned char *s1 = (const unsigned char *)str1;
-+ const unsigned char *s2 = (const unsigned char *)str2;
-+ int delta = 0;
-+
-+ while (*s1 || *s2) {
-+ delta = *s2 - *s1;
-+ if (delta)
-+ return delta;
-+ s1++;
-+ s2++;
-+ }
-+ return 0;
-+}
-diff -puN arch/i386/boot/tools/build.c~git-newsetup arch/i386/boot/tools/build.c
---- a/arch/i386/boot/tools/build.c~git-newsetup
-+++ a/arch/i386/boot/tools/build.c
-@@ -1,13 +1,12 @@
- /*
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright (C) 1997 Martin Mares
-+ * Copyright (C) 2007 H. Peter Anvin
- */
-
- /*
- * This file builds a disk-image from three different files:
- *
-- * - bootsect: compatibility mbr which prints an error message if
-- * someone tries to boot the kernel directly.
- * - setup: 8086 machine code, sets up system parm
- * - system: 80386 code for actual system
- *
-@@ -21,6 +20,7 @@
- * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996
- * Cross compiling fixes by Gertjan van Wingerde, July 1996
- * Rewritten by Martin Mares, April 1997
-+ * Substantially overhauled by H. Peter Anvin, April 2007
- */
-
- #include <stdio.h>
-@@ -32,23 +32,25 @@
- #include <sys/sysmacros.h>
- #include <unistd.h>
- #include <fcntl.h>
-+#include <sys/mman.h>
- #include <asm/boot.h>
-
--typedef unsigned char byte;
--typedef unsigned short word;
--typedef unsigned long u32;
-+typedef unsigned char u8;
-+typedef unsigned short u16;
-+typedef unsigned long u32;
-
- #define DEFAULT_MAJOR_ROOT 0
- #define DEFAULT_MINOR_ROOT 0
-
--/* Minimal number of setup sectors (see also bootsect.S) */
--#define SETUP_SECTS 4
-+/* Minimal number of setup sectors */
-+#define SETUP_SECT_MIN 5
-+#define SETUP_SECT_MAX 64
-
--byte buf[1024];
--int fd;
-+/* This must be large enough to hold the entire setup */
-+u8 buf[SETUP_SECT_MAX*512];
- int is_big_kernel;
-
--void die(const char * str, ...)
-+static void die(const char * str, ...)
- {
- va_list args;
- va_start(args, str);
-@@ -57,15 +59,9 @@ void die(const char * str, ...)
- exit(1);
- }
-
--void file_open(const char *name)
-+static void usage(void)
- {
-- if ((fd = open(name, O_RDONLY, 0)) < 0)
-- die("Unable to open `%s': %m", name);
--}
--
--void usage(void)
--{
-- die("Usage: build [-b] bootsect setup system [rootdev] [> image]");
-+ die("Usage: build [-b] setup system [rootdev] [> image]");
- }
-
- int main(int argc, char ** argv)
-@@ -73,27 +69,30 @@ int main(int argc, char ** argv)
- unsigned int i, sz, setup_sectors;
- int c;
- u32 sys_size;
-- byte major_root, minor_root;
-+ u8 major_root, minor_root;
- struct stat sb;
-+ FILE *file;
-+ int fd;
-+ void *kernel;
-
- if (argc > 2 && !strcmp(argv[1], "-b"))
- {
- is_big_kernel = 1;
- argc--, argv++;
- }
-- if ((argc < 4) || (argc > 5))
-+ if ((argc < 3) || (argc > 4))
- usage();
-- if (argc > 4) {
-- if (!strcmp(argv[4], "CURRENT")) {
-+ if (argc > 3) {
-+ if (!strcmp(argv[3], "CURRENT")) {
- if (stat("/", &sb)) {
- perror("/");
- die("Couldn't stat /");
- }
- major_root = major(sb.st_dev);
- minor_root = minor(sb.st_dev);
-- } else if (strcmp(argv[4], "FLOPPY")) {
-- if (stat(argv[4], &sb)) {
-- perror(argv[4]);
-+ } else if (strcmp(argv[3], "FLOPPY")) {
-+ if (stat(argv[3], &sb)) {
-+ perror(argv[3]);
- die("Couldn't stat root device.");
- }
- major_root = major(sb.st_rdev);
-@@ -108,79 +107,62 @@ int main(int argc, char ** argv)
- }
- fprintf(stderr, "Root device is (%d, %d)\n", major_root, minor_root);
-
-- file_open(argv[1]);
-- i = read(fd, buf, sizeof(buf));
-- fprintf(stderr,"Boot sector %d bytes.\n",i);
-- if (i != 512)
-- die("Boot block must be exactly 512 bytes");
-+ /* Copy the setup code */
-+ file = fopen(argv[1], "r");
-+ if (!file)
-+ die("Unable to open `%s': %m", argv[1]);
-+ c = fread(buf, 1, sizeof(buf), file);
-+ if (ferror(file))
-+ die("read-error on `setup'");
-+ if (c < 1024)
-+ die("The setup must be at least 1024 bytes");
- if (buf[510] != 0x55 || buf[511] != 0xaa)
- die("Boot block hasn't got boot flag (0xAA55)");
-+ fclose(file);
-+
-+ /* Pad unused space with zeros */
-+ setup_sectors = (c + 511) / 512;
-+ if (setup_sectors < SETUP_SECT_MIN)
-+ setup_sectors = SETUP_SECT_MIN;
-+ i = setup_sectors*512;
-+ memset(buf+c, 0, i-c);
-+
-+ /* Set the default root device */
- buf[508] = minor_root;
- buf[509] = major_root;
-- if (write(1, buf, 512) != 512)
-- die("Write call failed");
-- close (fd);
--
-- file_open(argv[2]); /* Copy the setup code */
-- for (i=0 ; (c=read(fd, buf, sizeof(buf)))>0 ; i+=c )
-- if (write(1, buf, c) != c)
-- die("Write call failed");
-- if (c != 0)
-- die("read-error on `setup'");
-- close (fd);
-
-- setup_sectors = (i + 511) / 512; /* Pad unused space with zeros */
-- /* for compatibility with ancient versions of LILO. */
-- if (setup_sectors < SETUP_SECTS)
-- setup_sectors = SETUP_SECTS;
-- fprintf(stderr, "Setup is %d bytes.\n", i);
-- memset(buf, 0, sizeof(buf));
-- while (i < setup_sectors * 512) {
-- c = setup_sectors * 512 - i;
-- if (c > sizeof(buf))
-- c = sizeof(buf);
-- if (write(1, buf, c) != c)
-- die("Write call failed");
-- i += c;
-- }
-+ fprintf(stderr, "Setup is %d bytes (padded to %d bytes).\n", c, i);
-
-- file_open(argv[3]);
-- if (fstat (fd, &sb))
-- die("Unable to stat `%s': %m", argv[3]);
-+ /* Open and stat the kernel file */
-+ fd = open(argv[2], O_RDONLY);
-+ if (fd < 0)
-+ die("Unable to open `%s': %m", argv[2]);
-+ if (fstat(fd, &sb))
-+ die("Unable to stat `%s': %m", argv[2]);
- sz = sb.st_size;
-- fprintf (stderr, "System is %d kB\n", sz/1024);
-+ fprintf (stderr, "System is %d kB\n", (sz+1023)/1024);
-+ kernel = mmap(NULL, sz, PROT_READ, MAP_SHARED, fd, 0);
-+ if (kernel == MAP_FAILED)
-+ die("Unable to mmap '%s': %m", argv[2]);
- sys_size = (sz + 15) / 16;
- if (!is_big_kernel && sys_size > DEF_SYSSIZE)
- die("System is too big. Try using bzImage or modules.");
-- while (sz > 0) {
-- int l, n;
-
-- l = (sz > sizeof(buf)) ? sizeof(buf) : sz;
-- if ((n=read(fd, buf, l)) != l) {
-- if (n < 0)
-- die("Error reading %s: %m", argv[3]);
-- else
-- die("%s: Unexpected EOF", argv[3]);
-- }
-- if (write(1, buf, l) != l)
-- die("Write failed");
-- sz -= l;
-- }
-+ /* Patch the setup code with the appropriate size parameters */
-+ buf[0x1f1] = setup_sectors-1;
-+ buf[0x1f4] = sys_size;
-+ buf[0x1f5] = sys_size >> 8;
-+ buf[0x1f6] = sys_size >> 16;
-+ buf[0x1f7] = sys_size >> 24;
-+
-+ if (fwrite(buf, 1, i, stdout) != i)
-+ die("Writing setup failed");
-+
-+ /* Copy the kernel code */
-+ if (fwrite(kernel, 1, sz, stdout) != sz)
-+ die("Writing kernel failed");
- close(fd);
-
-- if (lseek(1, 497, SEEK_SET) != 497) /* Write sizes to the bootsector */
-- die("Output: seek failed");
-- buf[0] = setup_sectors;
-- if (write(1, buf, 1) != 1)
-- die("Write of setup sector count failed");
-- if (lseek(1, 500, SEEK_SET) != 500)
-- die("Output: seek failed");
-- buf[0] = (sys_size & 0xff);
-- buf[1] = ((sys_size >> 8) & 0xff);
-- buf[2] = ((sys_size >> 16) & 0xff);
-- buf[3] = ((sys_size >> 24) & 0xff);
-- if (write(1, buf, 4) != 4)
-- die("Write of image length failed");
--
-- return 0; /* Everything is OK */
-+ /* Everything is OK */
-+ return 0;
- }
-diff -puN /dev/null arch/i386/boot/tty.c
---- /dev/null
-+++ a/arch/i386/boot/tty.c
-@@ -0,0 +1,112 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/tty.c
-+ *
-+ * Very simple screen I/O
-+ * XXX: Probably should add very simple serial I/O?
-+ */
-+
-+#include "boot.h"
-+
-+/*
-+ * These functions are in .inittext so they can be used to signal
-+ * error during initialization.
-+ */
-+
-+void __attribute__((section(".inittext"))) putchar(int ch)
-+{
-+ unsigned char c = ch;
-+
-+ if (c == '\n')
-+ putchar('\r'); /* \n -> \r\n */
-+
-+ /* int $0x10 is known to have bugs involving touching registers
-+ it shouldn't. Be extra conservative... */
-+ asm volatile("pushal; int $0x10; popal"
-+ : : "b" (0x0007), "c" (0x0001), "a" (0x0e00|ch));
-+}
-+
-+void __attribute__((section(".inittext"))) puts(const char *str)
-+{
-+ int n = 0;
-+ while (*str) {
-+ putchar(*str++);
-+ n++;
-+ }
-+}
-+
-+/*
-+ * Read the CMOS clock through the BIOS, and return the
-+ * seconds in BCD.
-+ */
-+
-+static u8 gettime(void)
-+{
-+ u16 ax = 0x0200;
-+ u16 cx, dx;
-+
-+ asm("int $0x1a"
-+ : "+a" (ax), "=c" (cx), "=d" (dx)
-+ : : "ebx", "esi", "edi");
-+
-+ return dx >> 8;
-+}
-+
-+/*
-+ * Read from the keyboard
-+ */
-+int getchar(void)
-+{
-+ u16 ax = 0;
-+ asm("int $0x16" : "+a" (ax));
-+
-+ return ax & 0xff;
-+}
-+
-+static int kbd_pending(void)
-+{
-+ u8 pending;
-+ asm("int $0x16; setnz %0"
-+ : "=rm" (pending)
-+ : "a" (0x0100));
-+ return pending;
-+}
-+
-+void kbd_flush(void)
-+{
-+ for (;;) {
-+ if (!kbd_pending())
-+ break;
-+ getchar();
-+ }
-+}
-+
-+int getchar_timeout(void)
-+{
-+ int cnt = 30;
-+ int t0, t1;
-+
-+ t0 = gettime();
-+
-+ while (cnt) {
-+ if (kbd_pending())
-+ return getchar();
-+
-+ t1 = gettime();
-+ if (t0 != t1) {
-+ cnt--;
-+ t0 = t1;
-+ }
-+ }
-+
-+ return 0; /* Timeout! */
-+}
-diff -puN /dev/null arch/i386/boot/version.c
---- /dev/null
-+++ a/arch/i386/boot/version.c
-@@ -0,0 +1,23 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/version.c
-+ *
-+ * Kernel version string
-+ */
-+
-+#include "boot.h"
-+#include <linux/utsrelease.h>
-+#include <linux/compile.h>
-+
-+const char kernel_version[] =
-+ UTS_RELEASE " (" LINUX_COMPILE_BY "@" LINUX_COMPILE_HOST ") "
-+ UTS_VERSION;
-diff -puN /dev/null arch/i386/boot/vesa.h
---- /dev/null
-+++ a/arch/i386/boot/vesa.h
-@@ -0,0 +1,79 @@
-+/* ----------------------------------------------------------------------- *
-+ *
-+ * Copyright 1999-2007 H. Peter Anvin - All Rights Reserved
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation, Inc., 53 Temple Place Ste 330,
-+ * Boston MA 02111-1307, USA; either version 2 of the License, or
-+ * (at your option) any later version; incorporated herein by reference.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+#ifndef BOOT_VESA_H
-+#define BOOT_VESA_H
-+
-+typedef struct {
-+ u16 off, seg;
-+} far_ptr;
-+
-+/* VESA General Information table */
-+struct vesa_general_info {
-+ u32 signature; /* 0 Magic number = "VESA" */
-+ u16 version; /* 4 */
-+ far_ptr vendor_string; /* 6 */
-+ u32 capabilities; /* 10 */
-+ far_ptr video_mode_ptr; /* 14 */
-+ u16 total_memory; /* 18 */
-+
-+ u16 oem_software_rev; /* 20 */
-+ far_ptr oem_vendor_name_ptr; /* 22 */
-+ far_ptr oem_product_name_ptr; /* 26 */
-+ far_ptr oem_product_rev_ptr; /* 30 */
-+
-+ u8 reserved[222]; /* 34 */
-+ u8 oem_data[256]; /* 256 */
-+} __attribute__((packed));
-+
-+#define VESA_MAGIC ('V' + ('E' << 8) + ('S' << 16) + ('A' << 24))
-+#define VBE2_MAGIC ('V' + ('B' << 8) + ('E' << 16) + ('2' << 24))
-+
-+struct vesa_mode_info {
-+ u16 mode_attr; /* 0 */
-+ u8 win_attr[2]; /* 2 */
-+ u16 win_grain; /* 4 */
-+ u16 win_size; /* 6 */
-+ u16 win_seg[2]; /* 8 */
-+ far_ptr win_scheme; /* 12 */
-+ u16 logical_scan; /* 16 */
-+
-+ u16 h_res; /* 18 */
-+ u16 v_res; /* 20 */
-+ u8 char_width; /* 22 */
-+ u8 char_height; /* 23 */
-+ u8 memory_planes; /* 24 */
-+ u8 bpp; /* 25 */
-+ u8 banks; /* 26 */
-+ u8 memory_layout; /* 27 */
-+ u8 bank_size; /* 28 */
-+ u8 image_planes; /* 29 */
-+ u8 page_function; /* 30 */
-+
-+ u8 rmask; /* 31 */
-+ u8 rpos; /* 32 */
-+ u8 gmask; /* 33 */
-+ u8 gpos; /* 34 */
-+ u8 bmask; /* 35 */
-+ u8 bpos; /* 36 */
-+ u8 resv_mask; /* 37 */
-+ u8 resv_pos; /* 38 */
-+ u8 dcm_info; /* 39 */
-+
-+ u32 lfb_ptr; /* 40 Linear frame buffer address */
-+ u32 offscreen_ptr; /* 44 Offscreen memory address */
-+ u16 offscreen_size; /* 48 */
-+
-+ u8 reserved[206]; /* 50 */
-+} __attribute__((packed));
-+
-+#endif /* LIB_SYS_VESA_H */
-diff -puN /dev/null arch/i386/boot/video-bios.c
---- /dev/null
-+++ a/arch/i386/boot/video-bios.c
-@@ -0,0 +1,125 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/video-bios.c
-+ *
-+ * Standard video BIOS modes
-+ *
-+ * We have two options for this; silent and scanned.
-+ */
-+
-+#include "boot.h"
-+#include "video.h"
-+
-+__videocard video_bios;
-+
-+/* Set a conventional BIOS mode */
-+static int set_bios_mode(u8 mode);
-+
-+static int bios_set_mode(struct mode_info *mi)
-+{
-+ return set_bios_mode(mi->mode - VIDEO_FIRST_BIOS);
-+}
-+
-+static int set_bios_mode(u8 mode)
-+{
-+ u16 ax;
-+ u8 new_mode;
-+
-+ ax = mode; /* AH=0x00 Set Video Mode */
-+ asm volatile(INT10
-+ : "+a" (ax)
-+ : : "ebx", "ecx", "edx", "esi", "edi");
-+
-+ ax = 0x0f00; /* Get Current Video Mode */
-+ asm volatile(INT10
-+ : "+a" (ax)
-+ : : "ebx", "ecx", "edx", "esi", "edi");
-+
-+ do_restore = 1; /* Assume video contents was lost */
-+ new_mode = ax & 0x7f; /* Not all BIOSes are clean with the top bit */
-+
-+ if (new_mode == mode)
-+ return 0; /* Mode change OK */
-+
-+ if (new_mode != boot_params.screen_info.orig_video_mode) {
-+ /* Mode setting failed, but we didn't end up where we
-+ started. That's bad. Try to revert to the original
-+ video mode. */
-+ ax = boot_params.screen_info.orig_video_mode;
-+ asm volatile(INT10
-+ : "+a" (ax)
-+ : : "ebx", "ecx", "edx", "esi", "edi");
-+ }
-+ return -1;
-+}
-+
-+static int bios_probe(void)
-+{
-+ u8 mode;
-+ u8 saved_mode = boot_params.screen_info.orig_video_mode;
-+ u16 crtc;
-+ struct mode_info *mi;
-+ int nmodes = 0;
-+
-+ if (adapter != ADAPTER_EGA && adapter != ADAPTER_VGA)
-+ return 0;
-+
-+ set_fs(0);
-+ crtc = vga_crtc();
-+
-+ video_bios.modes = GET_HEAP(struct mode_info, 0);
-+
-+ for (mode = 0x14; mode <= 0x7f; mode++) {
-+ if (heap_free() < sizeof(struct mode_info))
-+ break;
-+
-+ if (mode_defined(VIDEO_FIRST_BIOS+mode))
-+ continue;
-+
-+ if (set_bios_mode(mode))
-+ continue;
-+
-+ /* Try to verify that it's a text mode. */
-+
-+ /* Attribute Controller: make graphics controller disabled */
-+ if (in_idx(0x3c0, 0x10) & 0x01)
-+ continue;
-+
-+ /* Graphics Controller: verify Alpha addressing enabled */
-+ if (in_idx(0x3ce, 0x06) & 0x01)
-+ continue;
-+
-+ /* CRTC cursor location low should be zero(?) */
-+ if (in_idx(crtc, 0x0f))
-+ continue;
-+
-+ mi = GET_HEAP(struct mode_info, 1);
-+ mi->mode = VIDEO_FIRST_BIOS+mode;
-+ mi->x = rdfs16(0x44a);
-+ mi->y = rdfs8(0x484)+1;
-+ nmodes++;
-+ }
-+
-+ set_bios_mode(saved_mode);
-+
-+ return nmodes;
-+}
-+
-+__videocard video_bios =
-+{
-+ .card_name = "BIOS (scanned)",
-+ .probe = bios_probe,
-+ .set_mode = bios_set_mode,
-+ .unsafe = 1,
-+ .xmode_first = VIDEO_FIRST_BIOS,
-+ .xmode_n = 0x80,
-+};
-diff -puN /dev/null arch/i386/boot/video-vesa.c
---- /dev/null
-+++ a/arch/i386/boot/video-vesa.c
-@@ -0,0 +1,283 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/video-vesa.c
-+ *
-+ * VESA text modes
-+ */
-+
-+#include "boot.h"
-+#include "video.h"
-+#include "vesa.h"
-+
-+/* VESA information */
-+static struct vesa_general_info vginfo;
-+static struct vesa_mode_info vminfo;
-+
-+__videocard video_vesa;
-+
-+static void vesa_store_mode_params_graphics(void);
-+
-+static int vesa_probe(void)
-+{
-+#ifdef CONFIG_VIDEO_VESA
-+ u16 ax;
-+ u16 mode;
-+ addr_t mode_ptr;
-+ struct mode_info *mi;
-+ int nmodes = 0;
-+
-+ video_vesa.modes = GET_HEAP(struct mode_info, 0);
-+
-+ vginfo.signature = VBE2_MAGIC;
-+
-+ /* Optimistically assume a VESA BIOS is register-clean... */
-+ ax = 0x4f00;
-+ asm("int $0x10" : "+a" (ax), "=m" (vginfo) : "D" (&vginfo));
-+
-+ if (ax != 0x004f ||
-+ vginfo.signature != VESA_MAGIC ||
-+ vginfo.version < 0x0102)
-+ return 0; /* Not present */
-+
-+ set_fs(vginfo.video_mode_ptr.seg);
-+ mode_ptr = vginfo.video_mode_ptr.off;
-+
-+ while ((mode = rdfs16(mode_ptr)) != 0xffff) {
-+ mode_ptr += 2;
-+
-+ if (heap_free() < sizeof(struct mode_info))
-+ break; /* Heap full, can't save mode info */
-+
-+ if (mode & ~0x1ff)
-+ continue;
-+
-+ memset(&vminfo, 0, sizeof vminfo); /* Just in case... */
-+
-+ ax = 0x4f01;
-+ asm("int $0x10"
-+ : "+a" (ax), "=m" (vminfo)
-+ : "c" (mode), "D" (&vminfo));
-+
-+ if (ax != 0x004f)
-+ continue;
-+
-+ if ((vminfo.mode_attr & 0x15) == 0x05) {
-+ /* Text Mode, TTY BIOS supported,
-+ supported by hardware */
-+ mi = GET_HEAP(struct mode_info, 1);
-+ mi->mode = mode + VIDEO_FIRST_VESA;
-+ mi->x = vminfo.h_res;
-+ mi->y = vminfo.v_res;
-+ nmodes++;
-+ } else if ((vminfo.mode_attr & 0x99) == 0x99) {
-+#ifdef CONFIG_FB
-+ /* Graphics mode, color, linear frame buffer
-+ supported -- register the mode but hide from
-+ the menu. Only do this if framebuffer is
-+ configured, however, otherwise the user will
-+ be left without a screen. */
-+ mi = GET_HEAP(struct mode_info, 1);
-+ mi->mode = mode + VIDEO_FIRST_VESA;
-+ mi->x = mi->y = 0;
-+ nmodes++;
-+#endif
-+ }
-+ }
-+
-+ return nmodes;
-+#else
-+ return 0;
-+#endif
-+}
-+
-+static int vesa_set_mode(struct mode_info *mode)
-+{
-+ u16 ax;
-+ int is_graphic;
-+ u16 vesa_mode = mode->mode - VIDEO_FIRST_VESA;
-+
-+ memset(&vminfo, 0, sizeof vminfo); /* Just in case... */
-+
-+ ax = 0x4f01;
-+ asm("int $0x10"
-+ : "+a" (ax), "=m" (vminfo)
-+ : "c" (vesa_mode), "D" (&vminfo));
-+
-+ if (ax != 0x004f)
-+ return -1;
-+
-+ if ((vminfo.mode_attr & 0x15) == 0x05) {
-+ /* It's a supported text mode */
-+ is_graphic = 0;
-+ } else if ((vminfo.mode_attr & 0x99) == 0x99) {
-+ /* It's a graphics mode with linear frame buffer */
-+ is_graphic = 1;
-+ vesa_mode |= 0x4000; /* Request linear frame buffer */
-+ } else {
-+ return -1; /* Invalid mode */
-+ }
-+
-+
-+ ax = 0x4f02;
-+ asm volatile("int $0x10"
-+ : "+a" (ax)
-+ : "b" (vesa_mode), "D" (0));
-+
-+ if (ax != 0x004f)
-+ return -1;
-+
-+ graphic_mode = is_graphic;
-+ if (!is_graphic) {
-+ /* Text mode */
-+ force_x = mode->x;
-+ force_y = mode->y;
-+ do_restore = 1;
-+ } else {
-+ /* Graphics mode */
-+ vesa_store_mode_params_graphics();
-+ }
-+
-+ return 0;
-+}
-+
-+
-+/* Switch DAC to 8-bit mode */
-+static void vesa_dac_set_8bits(void)
-+{
-+ u8 dac_size = 6;
-+
-+ /* If possible, switch the DAC to 8-bit mode */
-+ if (vginfo.capabilities & 1) {
-+ u16 ax, bx;
-+
-+ ax = 0x4f08;
-+ bx = 0x0800;
-+ asm volatile(INT10
-+ : "+a" (ax), "+b" (bx)
-+ : : "ecx", "edx", "esi", "edi");
-+
-+ if (ax == 0x004f)
-+ dac_size = bx >> 8;
-+ }
-+
-+ /* Set the color sizes to the DAC size, and offsets to 0 */
-+ boot_params.screen_info.red_size = dac_size;
-+ boot_params.screen_info.green_size = dac_size;
-+ boot_params.screen_info.blue_size = dac_size;
-+ boot_params.screen_info.rsvd_size = dac_size;
-+
-+ boot_params.screen_info.red_pos = 0;
-+ boot_params.screen_info.green_pos = 0;
-+ boot_params.screen_info.blue_pos = 0;
-+ boot_params.screen_info.rsvd_pos = 0;
-+}
-+
-+/* Save the VESA protected mode info */
-+static void vesa_store_pm_info(void)
-+{
-+ u16 ax, bx, di, es;
-+
-+ ax = 0x4f0a;
-+ bx = di = 0;
-+ asm("pushw %%es; "INT10"; movw %%es,%0; popw %%es"
-+ : "=d" (es), "+a" (ax), "+b" (bx), "+D" (di)
-+ : : "ecx", "esi");
-+
-+ if (ax != 0x004f)
-+ return;
-+
-+ boot_params.screen_info.vesapm_seg = es;
-+ boot_params.screen_info.vesapm_off = di;
-+}
-+
-+/*
-+ * Save video mode parameters for graphics mode
-+ */
-+static void vesa_store_mode_params_graphics(void)
-+{
-+ /* Tell the kernel we're in VESA graphics mode */
-+ boot_params.screen_info.orig_video_isVGA = 0x23;
-+
-+ /* Mode parameters */
-+ boot_params.screen_info.vesa_attributes = vminfo.mode_attr;
-+ boot_params.screen_info.lfb_linelength = vminfo.logical_scan;
-+ boot_params.screen_info.lfb_width = vminfo.h_res;
-+ boot_params.screen_info.lfb_height = vminfo.v_res;
-+ boot_params.screen_info.lfb_depth = vminfo.bpp;
-+ boot_params.screen_info.pages = vminfo.image_planes;
-+ boot_params.screen_info.lfb_base = vminfo.lfb_ptr;
-+ memcpy(&boot_params.screen_info.red_size,
-+ &vminfo.rmask, 8);
-+
-+ /* General parameters */
-+ boot_params.screen_info.lfb_size = vginfo.total_memory;
-+
-+ if (vminfo.bpp <= 8)
-+ vesa_dac_set_8bits();
-+
-+ vesa_store_pm_info();
-+}
-+
-+/*
-+ * Save EDID information for the kernel; this is invoked, separately,
-+ * after mode-setting.
-+ */
-+void vesa_store_edid(void)
-+{
-+#ifdef CONFIG_FIRMWARE_EDID
-+ u16 ax, bx, cx, dx, di;
-+
-+ /* Apparently used as a nonsense token... */
-+ memset(&boot_params.edid_info, 0x13, sizeof boot_params.edid_info);
-+
-+ if (vginfo.version < 0x0200)
-+ return; /* EDID requires VBE 2.0+ */
-+
-+ ax = 0x4f15; /* VBE DDC */
-+ bx = 0x0000; /* Report DDC capabilities */
-+ cx = 0; /* Controller 0 */
-+ di = 0; /* ES:DI must be 0 by spec */
-+
-+ /* Note: The VBE DDC spec is different from the main VESA spec;
-+ we genuinely have to assume all registers are destroyed here. */
-+
-+ asm("pushw %%es; movw %2,%%es; "INT10"; popw %%es"
-+ : "+a" (ax), "+b" (bx)
-+ : "c" (cx), "D" (di)
-+ : "esi");
-+
-+ if (ax != 0x004f)
-+ return; /* No EDID */
-+
-+ /* BH = time in seconds to transfer EDD information */
-+ /* BL = DDC level supported */
-+
-+ ax = 0x4f15; /* VBE DDC */
-+ bx = 0x0001; /* Read EDID */
-+ cx = 0; /* Controller 0 */
-+ dx = 0; /* EDID block number */
-+ di =(size_t) &boot_params.edid_info; /* (ES:)Pointer to block */
-+ asm(INT10
-+ : "+a" (ax), "+b" (bx), "+d" (dx)
-+ : "c" (cx), "D" (di)
-+ : "esi");
-+#endif /* CONFIG_FIRMWARE_EDID */
-+}
-+
-+__videocard video_vesa =
-+{
-+ .card_name = "VESA",
-+ .probe = vesa_probe,
-+ .set_mode = vesa_set_mode,
-+ .xmode_first = VIDEO_FIRST_VESA,
-+ .xmode_n = 0x200,
-+};
-diff -puN /dev/null arch/i386/boot/video-vga.c
---- /dev/null
-+++ a/arch/i386/boot/video-vga.c
-@@ -0,0 +1,260 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/video-vga.c
-+ *
-+ * Common all-VGA modes
-+ */
-+
-+#include "boot.h"
-+#include "video.h"
-+
-+static struct mode_info vga_modes[] = {
-+ { VIDEO_80x25, 80, 25 },
-+ { VIDEO_8POINT, 80, 50 },
-+ { VIDEO_80x43, 80, 43 },
-+ { VIDEO_80x28, 80, 28 },
-+ { VIDEO_80x30, 80, 30 },
-+ { VIDEO_80x34, 80, 34 },
-+ { VIDEO_80x60, 80, 60 },
-+};
-+
-+static struct mode_info ega_modes[] = {
-+ { VIDEO_80x25, 80, 25 },
-+ { VIDEO_8POINT, 80, 43 },
-+};
-+
-+static struct mode_info cga_modes[] = {
-+ { VIDEO_80x25, 80, 25 },
-+};
-+
-+__videocard video_vga;
-+
-+/* Set basic 80x25 mode */
-+static u8 vga_set_basic_mode(void)
-+{
-+ u16 ax;
-+ u8 rows;
-+ u8 mode;
-+
-+#ifdef CONFIG_VIDEO_400_HACK
-+ if (adapter >= ADAPTER_VGA) {
-+ asm(INT10
-+ : : "a" (0x1202), "b" (0x0030)
-+ : "ecx", "edx", "esi", "edi");
-+ }
-+#endif
-+
-+ ax = 0x0f00;
-+ asm(INT10
-+ : "+a" (ax)
-+ : : "ebx", "ecx", "edx", "esi", "edi");
-+
-+ mode = (u8)ax;
-+
-+ set_fs(0);
-+ rows = rdfs8(0x484); /* rows minus one */
-+
-+#ifndef CONFIG_VIDEO_400_HACK
-+ if ((ax == 0x5003 || ax == 0x5007) &&
-+ (rows == 0 || rows == 24))
-+ return mode;
-+#endif
-+
-+ if (mode != 3 && mode != 7)
-+ mode = 3;
-+
-+ /* Set the mode */
-+ asm volatile(INT10
-+ : : "a" (mode)
-+ : "ebx", "ecx", "edx", "esi", "edi");
-+ do_restore = 1;
-+ return mode;
-+}
-+
-+static void vga_set_8font(void)
-+{
-+ /* Set 8x8 font - 80x43 on EGA, 80x50 on VGA */
-+
-+ /* Set 8x8 font */
-+ asm volatile(INT10 : : "a" (0x1112), "b" (0));
-+
-+ /* Use alternate print screen */
-+ asm volatile(INT10 : : "a" (0x1200), "b" (0x20));
-+
-+ /* Turn off cursor emulation */
-+ asm volatile(INT10 : : "a" (0x1201), "b" (0x34));
-+
-+ /* Cursor is scan lines 6-7 */
-+ asm volatile(INT10 : : "a" (0x0100), "c" (0x0607));
-+}
-+
-+static void vga_set_14font(void)
-+{
-+ /* Set 9x14 font - 80x28 on VGA */
-+
-+ /* Set 9x14 font */
-+ asm volatile(INT10 : : "a" (0x1111), "b" (0));
-+
-+ /* Turn off cursor emulation */
-+ asm volatile(INT10 : : "a" (0x1201), "b" (0x34));
-+
-+ /* Cursor is scan lines 11-12 */
-+ asm volatile(INT10 : : "a" (0x0100), "c" (0x0b0c));
-+}
-+
-+static void vga_set_80x43(void)
-+{
-+ /* Set 80x43 mode on VGA (not EGA) */
-+
-+ /* Set 350 scans */
-+ asm volatile(INT10 : : "a" (0x1201), "b" (0x30));
-+
-+ /* Reset video mode */
-+ asm volatile(INT10 : : "a" (0x0003));
-+
-+ vga_set_8font();
-+}
-+
-+/* I/O address of the VGA CRTC */
-+u16 vga_crtc(void)
-+{
-+ return (inb(0x3cc) & 1) ? 0x3d4 : 0x3b4;
-+}
-+
-+static void vga_set_480_scanlines(int end)
-+{
-+ u16 crtc;
-+ u8 csel;
-+
-+ crtc = vga_crtc();
-+
-+ out_idx(0x0c, crtc, 0x11); /* Vertical sync end, unlock CR0-7 */
-+ out_idx(0x0b, crtc, 0x06); /* Vertical total */
-+ out_idx(0x3e, crtc, 0x07); /* Vertical overflow */
-+ out_idx(0xea, crtc, 0x10); /* Vertical sync start */
-+ out_idx(end, crtc, 0x12); /* Vertical display end */
-+ out_idx(0xe7, crtc, 0x15); /* Vertical blank start */
-+ out_idx(0x04, crtc, 0x16); /* Vertical blank end */
-+ csel = inb(0x3cc);
-+ csel &= 0x0d;
-+ csel |= 0xe2;
-+ outb(csel, 0x3cc);
-+}
-+
-+static void vga_set_80x30(void)
-+{
-+ vga_set_480_scanlines(0xdf);
-+}
-+
-+static void vga_set_80x34(void)
-+{
-+ vga_set_14font();
-+ vga_set_480_scanlines(0xdb);
-+}
-+
-+static void vga_set_80x60(void)
-+{
-+ vga_set_8font();
-+ vga_set_480_scanlines(0xdf);
-+}
-+
-+static int vga_set_mode(struct mode_info *mode)
-+{
-+ /* Set the basic mode */
-+ vga_set_basic_mode();
-+
-+ /* Override a possibly broken BIOS */
-+ force_x = mode->x;
-+ force_y = mode->y;
-+
-+ switch (mode->mode) {
-+ case VIDEO_80x25:
-+ break;
-+ case VIDEO_8POINT:
-+ vga_set_8font();
-+ break;
-+ case VIDEO_80x43:
-+ vga_set_80x43();
-+ break;
-+ case VIDEO_80x28:
-+ vga_set_14font();
-+ break;
-+ case VIDEO_80x30:
-+ vga_set_80x30();
-+ break;
-+ case VIDEO_80x34:
-+ vga_set_80x34();
-+ break;
-+ case VIDEO_80x60:
-+ vga_set_80x60();
-+ break;
-+ }
-+
-+ return 0;
-+}
-+
-+/*
-+ * Note: this probe includes basic information required by all
-+ * systems. It should be executed first, by making sure
-+ * video-vga.c is listed first in the Makefile.
-+ */
-+static int vga_probe(void)
-+{
-+ static const char *card_name[] = {
-+ "CGA/MDA/HGC", "EGA", "VGA"
-+ };
-+ static struct mode_info *mode_lists[] = {
-+ cga_modes,
-+ ega_modes,
-+ vga_modes,
-+ };
-+ static int mode_count[] = {
-+ sizeof(cga_modes)/sizeof(struct mode_info),
-+ sizeof(ega_modes)/sizeof(struct mode_info),
-+ sizeof(vga_modes)/sizeof(struct mode_info),
-+ };
-+ u8 vga_flag;
-+
-+ asm(INT10
-+ : "=b" (boot_params.screen_info.orig_video_ega_bx)
-+ : "a" (0x1200), "b" (0x10) /* Check EGA/VGA */
-+ : "ecx", "edx", "esi", "edi");
-+
-+ /* If we have MDA/CGA/HGC then BL will be unchanged at 0x10 */
-+ if ((u8)boot_params.screen_info.orig_video_ega_bx != 0x10) {
-+ /* EGA/VGA */
-+ asm(INT10
-+ : "=a" (vga_flag)
-+ : "a" (0x1a00)
-+ : "ebx", "ecx", "edx", "esi", "edi");
-+
-+ if (vga_flag == 0x1a) {
-+ adapter = ADAPTER_VGA;
-+ boot_params.screen_info.orig_video_isVGA = 1;
-+ } else {
-+ adapter = ADAPTER_EGA;
-+ }
-+ } else {
-+ adapter = ADAPTER_CGA;
-+ }
-+
-+ video_vga.modes = mode_lists[adapter];
-+ video_vga.card_name = card_name[adapter];
-+ return mode_count[adapter];
-+}
-+
-+__videocard video_vga =
-+{
-+ .card_name = "VGA",
-+ .probe = vga_probe,
-+ .set_mode = vga_set_mode,
-+};
-diff -puN arch/i386/boot/video.S~git-newsetup /dev/null
---- a/arch/i386/boot/video.S
-+++ /dev/null
-@@ -1,2043 +0,0 @@
--/* video.S
-- *
-- * Display adapter & video mode setup, version 2.13 (14-May-99)
-- *
-- * Copyright (C) 1995 -- 1998 Martin Mares <mj@ucw.cz>
-- * Based on the original setup.S code (C) Linus Torvalds and Mats Anderson
-- *
-- * Rewritten to use GNU 'as' by Chris Noe <stiker@northlink.com> May 1999
-- *
-- * For further information, look at Documentation/svga.txt.
-- *
-- */
--
--/* Enable autodetection of SVGA adapters and modes. */
--#undef CONFIG_VIDEO_SVGA
--
--/* Enable autodetection of VESA modes */
--#define CONFIG_VIDEO_VESA
--
--/* Enable compacting of mode table */
--#define CONFIG_VIDEO_COMPACT
--
--/* Retain screen contents when switching modes */
--#define CONFIG_VIDEO_RETAIN
--
--/* Enable local mode list */
--#undef CONFIG_VIDEO_LOCAL
--
--/* Force 400 scan lines for standard modes (hack to fix bad BIOS behaviour */
--#undef CONFIG_VIDEO_400_HACK
--
--/* Hack that lets you force specific BIOS mode ID and specific dimensions */
--#undef CONFIG_VIDEO_GFX_HACK
--#define VIDEO_GFX_BIOS_AX 0x4f02 /* 800x600 on ThinkPad */
--#define VIDEO_GFX_BIOS_BX 0x0102
--#define VIDEO_GFX_DUMMY_RESOLUTION 0x6425 /* 100x37 */
--
--/* This code uses an extended set of video mode numbers. These include:
-- * Aliases for standard modes
-- * NORMAL_VGA (-1)
-- * EXTENDED_VGA (-2)
-- * ASK_VGA (-3)
-- * Video modes numbered by menu position -- NOT RECOMMENDED because of lack
-- * of compatibility when extending the table. These are between 0x00 and 0xff.
-- */
--#define VIDEO_FIRST_MENU 0x0000
--
--/* Standard BIOS video modes (BIOS number + 0x0100) */
--#define VIDEO_FIRST_BIOS 0x0100
--
--/* VESA BIOS video modes (VESA number + 0x0200) */
--#define VIDEO_FIRST_VESA 0x0200
--
--/* Video7 special modes (BIOS number + 0x0900) */
--#define VIDEO_FIRST_V7 0x0900
--
--/* Special video modes */
--#define VIDEO_FIRST_SPECIAL 0x0f00
--#define VIDEO_80x25 0x0f00
--#define VIDEO_8POINT 0x0f01
--#define VIDEO_80x43 0x0f02
--#define VIDEO_80x28 0x0f03
--#define VIDEO_CURRENT_MODE 0x0f04
--#define VIDEO_80x30 0x0f05
--#define VIDEO_80x34 0x0f06
--#define VIDEO_80x60 0x0f07
--#define VIDEO_GFX_HACK 0x0f08
--#define VIDEO_LAST_SPECIAL 0x0f09
--
--/* Video modes given by resolution */
--#define VIDEO_FIRST_RESOLUTION 0x1000
--
--/* The "recalculate timings" flag */
--#define VIDEO_RECALC 0x8000
--
--/* Positions of various video parameters passed to the kernel */
--/* (see also include/linux/tty.h) */
--#define PARAM_CURSOR_POS 0x00
--#define PARAM_VIDEO_PAGE 0x04
--#define PARAM_VIDEO_MODE 0x06
--#define PARAM_VIDEO_COLS 0x07
--#define PARAM_VIDEO_EGA_BX 0x0a
--#define PARAM_VIDEO_LINES 0x0e
--#define PARAM_HAVE_VGA 0x0f
--#define PARAM_FONT_POINTS 0x10
--
--#define PARAM_LFB_WIDTH 0x12
--#define PARAM_LFB_HEIGHT 0x14
--#define PARAM_LFB_DEPTH 0x16
--#define PARAM_LFB_BASE 0x18
--#define PARAM_LFB_SIZE 0x1c
--#define PARAM_LFB_LINELENGTH 0x24
--#define PARAM_LFB_COLORS 0x26
--#define PARAM_VESAPM_SEG 0x2e
--#define PARAM_VESAPM_OFF 0x30
--#define PARAM_LFB_PAGES 0x32
--#define PARAM_VESA_ATTRIB 0x34
--#define PARAM_CAPABILITIES 0x36
--
--/* Define DO_STORE according to CONFIG_VIDEO_RETAIN */
--#ifdef CONFIG_VIDEO_RETAIN
--#define DO_STORE call store_screen
--#else
--#define DO_STORE
--#endif /* CONFIG_VIDEO_RETAIN */
--
--# This is the main entry point called by setup.S
--# %ds *must* be pointing to the bootsector
--video: pushw %ds # We use different segments
-- pushw %ds # FS contains original DS
-- popw %fs
-- pushw %cs # DS is equal to CS
-- popw %ds
-- pushw %cs # ES is equal to CS
-- popw %es
-- xorw %ax, %ax
-- movw %ax, %gs # GS is zero
-- cld
-- call basic_detect # Basic adapter type testing (EGA/VGA/MDA/CGA)
--#ifdef CONFIG_VIDEO_SELECT
-- movw %fs:(0x01fa), %ax # User selected video mode
-- cmpw $ASK_VGA, %ax # Bring up the menu
-- jz vid2
--
-- call mode_set # Set the mode
-- jc vid1
--
-- leaw badmdt, %si # Invalid mode ID
-- call prtstr
--vid2: call mode_menu
--vid1:
--#ifdef CONFIG_VIDEO_RETAIN
-- call restore_screen # Restore screen contents
--#endif /* CONFIG_VIDEO_RETAIN */
-- call store_edid
--#endif /* CONFIG_VIDEO_SELECT */
-- call mode_params # Store mode parameters
-- popw %ds # Restore original DS
-- ret
--
--# Detect if we have CGA, MDA, EGA or VGA and pass it to the kernel.
--basic_detect:
-- movb $0, %fs:(PARAM_HAVE_VGA)
-- movb $0x12, %ah # Check EGA/VGA
-- movb $0x10, %bl
-- int $0x10
-- movw %bx, %fs:(PARAM_VIDEO_EGA_BX) # Identifies EGA to the kernel
-- cmpb $0x10, %bl # No, it's a CGA/MDA/HGA card.
-- je basret
--
-- incb adapter
-- movw $0x1a00, %ax # Check EGA or VGA?
-- int $0x10
-- cmpb $0x1a, %al # 1a means VGA...
-- jne basret # anything else is EGA.
--
-- incb %fs:(PARAM_HAVE_VGA) # We've detected a VGA
-- incb adapter
--basret: ret
--
--# Store the video mode parameters for later usage by the kernel.
--# This is done by asking the BIOS except for the rows/columns
--# parameters in the default 80x25 mode -- these are set directly,
--# because some very obscure BIOSes supply insane values.
--mode_params:
--#ifdef CONFIG_VIDEO_SELECT
-- cmpb $0, graphic_mode
-- jnz mopar_gr
--#endif
-- movb $0x03, %ah # Read cursor position
-- xorb %bh, %bh
-- int $0x10
-- movw %dx, %fs:(PARAM_CURSOR_POS)
-- movb $0x0f, %ah # Read page/mode/width
-- int $0x10
-- movw %bx, %fs:(PARAM_VIDEO_PAGE)
-- movw %ax, %fs:(PARAM_VIDEO_MODE) # Video mode and screen width
-- cmpb $0x7, %al # MDA/HGA => segment differs
-- jnz mopar0
--
-- movw $0xb000, video_segment
--mopar0: movw %gs:(0x485), %ax # Font size
-- movw %ax, %fs:(PARAM_FONT_POINTS) # (valid only on EGA/VGA)
-- movw force_size, %ax # Forced size?
-- orw %ax, %ax
-- jz mopar1
--
-- movb %ah, %fs:(PARAM_VIDEO_COLS)
-- movb %al, %fs:(PARAM_VIDEO_LINES)
-- ret
--
--mopar1: movb $25, %al
-- cmpb $0, adapter # If we are on CGA/MDA/HGA, the
-- jz mopar2 # screen must have 25 lines.
--
-- movb %gs:(0x484), %al # On EGA/VGA, use the EGA+ BIOS
-- incb %al # location of max lines.
--mopar2: movb %al, %fs:(PARAM_VIDEO_LINES)
-- ret
--
--#ifdef CONFIG_VIDEO_SELECT
--# Fetching of VESA frame buffer parameters
--mopar_gr:
-- leaw modelist+1024, %di
-- movb $0x23, %fs:(PARAM_HAVE_VGA)
-- movw 16(%di), %ax
-- movw %ax, %fs:(PARAM_LFB_LINELENGTH)
-- movw 18(%di), %ax
-- movw %ax, %fs:(PARAM_LFB_WIDTH)
-- movw 20(%di), %ax
-- movw %ax, %fs:(PARAM_LFB_HEIGHT)
-- movb 25(%di), %al
-- movb $0, %ah
-- movw %ax, %fs:(PARAM_LFB_DEPTH)
-- movb 29(%di), %al
-- movb $0, %ah
-- movw %ax, %fs:(PARAM_LFB_PAGES)
-- movl 40(%di), %eax
-- movl %eax, %fs:(PARAM_LFB_BASE)
-- movl 31(%di), %eax
-- movl %eax, %fs:(PARAM_LFB_COLORS)
-- movl 35(%di), %eax
-- movl %eax, %fs:(PARAM_LFB_COLORS+4)
-- movw 0(%di), %ax
-- movw %ax, %fs:(PARAM_VESA_ATTRIB)
--
--# get video mem size
-- leaw modelist+1024, %di
-- movw $0x4f00, %ax
-- int $0x10
-- xorl %eax, %eax
-- movw 18(%di), %ax
-- movl %eax, %fs:(PARAM_LFB_SIZE)
--
--# store mode capabilities
-- movl 10(%di), %eax
-- movl %eax, %fs:(PARAM_CAPABILITIES)
--
--# switching the DAC to 8-bit is for <= 8 bpp only
-- movw %fs:(PARAM_LFB_DEPTH), %ax
-- cmpw $8, %ax
-- jg dac_done
--
--# get DAC switching capability
-- xorl %eax, %eax
-- movb 10(%di), %al
-- testb $1, %al
-- jz dac_set
--
--# attempt to switch DAC to 8-bit
-- movw $0x4f08, %ax
-- movw $0x0800, %bx
-- int $0x10
-- cmpw $0x004f, %ax
-- jne dac_set
-- movb %bh, dac_size # store actual DAC size
--
--dac_set:
--# set color size to DAC size
-- movb dac_size, %al
-- movb %al, %fs:(PARAM_LFB_COLORS+0)
-- movb %al, %fs:(PARAM_LFB_COLORS+2)
-- movb %al, %fs:(PARAM_LFB_COLORS+4)
-- movb %al, %fs:(PARAM_LFB_COLORS+6)
--
--# set color offsets to 0
-- movb $0, %fs:(PARAM_LFB_COLORS+1)
-- movb $0, %fs:(PARAM_LFB_COLORS+3)
-- movb $0, %fs:(PARAM_LFB_COLORS+5)
-- movb $0, %fs:(PARAM_LFB_COLORS+7)
--
--dac_done:
--# get protected mode interface informations
-- movw $0x4f0a, %ax
-- xorw %bx, %bx
-- xorw %di, %di
-- int $0x10
-- cmp $0x004f, %ax
-- jnz no_pm
--
-- movw %es, %fs:(PARAM_VESAPM_SEG)
-- movw %di, %fs:(PARAM_VESAPM_OFF)
--no_pm: ret
--
--# The video mode menu
--mode_menu:
-- leaw keymsg, %si # "Return/Space/Timeout" message
-- call prtstr
-- call flush
--nokey: call getkt
--
-- cmpb $0x0d, %al # ENTER ?
-- je listm # yes - manual mode selection
--
-- cmpb $0x20, %al # SPACE ?
-- je defmd1 # no - repeat
--
-- call beep
-- jmp nokey
--
--defmd1: ret # No mode chosen? Default 80x25
--
--listm: call mode_table # List mode table
--listm0: leaw name_bann, %si # Print adapter name
-- call prtstr
-- movw card_name, %si
-- orw %si, %si
-- jnz an2
--
-- movb adapter, %al
-- leaw old_name, %si
-- orb %al, %al
-- jz an1
--
-- leaw ega_name, %si
-- decb %al
-- jz an1
--
-- leaw vga_name, %si
-- jmp an1
--
--an2: call prtstr
-- leaw svga_name, %si
--an1: call prtstr
-- leaw listhdr, %si # Table header
-- call prtstr
-- movb $0x30, %dl # DL holds mode number
-- leaw modelist, %si
--lm1: cmpw $ASK_VGA, (%si) # End?
-- jz lm2
--
-- movb %dl, %al # Menu selection number
-- call prtchr
-- call prtsp2
-- lodsw
-- call prthw # Mode ID
-- call prtsp2
-- movb 0x1(%si), %al
-- call prtdec # Rows
-- movb $0x78, %al # the letter 'x'
-- call prtchr
-- lodsw
-- call prtdec # Columns
-- movb $0x0d, %al # New line
-- call prtchr
-- movb $0x0a, %al
-- call prtchr
-- incb %dl # Next character
-- cmpb $0x3a, %dl
-- jnz lm1
--
-- movb $0x61, %dl
-- jmp lm1
--
--lm2: leaw prompt, %si # Mode prompt
-- call prtstr
-- leaw edit_buf, %di # Editor buffer
--lm3: call getkey
-- cmpb $0x0d, %al # Enter?
-- jz lment
--
-- cmpb $0x08, %al # Backspace?
-- jz lmbs
--
-- cmpb $0x20, %al # Printable?
-- jc lm3
--
-- cmpw $edit_buf+4, %di # Enough space?
-- jz lm3
--
-- stosb
-- call prtchr
-- jmp lm3
--
--lmbs: cmpw $edit_buf, %di # Backspace
-- jz lm3
--
-- decw %di
-- movb $0x08, %al
-- call prtchr
-- call prtspc
-- movb $0x08, %al
-- call prtchr
-- jmp lm3
--
--lment: movb $0, (%di)
-- leaw crlft, %si
-- call prtstr
-- leaw edit_buf, %si
-- cmpb $0, (%si) # Empty string = default mode
-- jz lmdef
--
-- cmpb $0, 1(%si) # One character = menu selection
-- jz mnusel
--
-- cmpw $0x6373, (%si) # "scan" => mode scanning
-- jnz lmhx
--
-- cmpw $0x6e61, 2(%si)
-- jz lmscan
--
--lmhx: xorw %bx, %bx # Else => mode ID in hex
--lmhex: lodsb
-- orb %al, %al
-- jz lmuse1
--
-- subb $0x30, %al
-- jc lmbad
--
-- cmpb $10, %al
-- jc lmhx1
--
-- subb $7, %al
-- andb $0xdf, %al
-- cmpb $10, %al
-- jc lmbad
--
-- cmpb $16, %al
-- jnc lmbad
--
--lmhx1: shlw $4, %bx
-- orb %al, %bl
-- jmp lmhex
--
--lmuse1: movw %bx, %ax
-- jmp lmuse
--
--mnusel: lodsb # Menu selection
-- xorb %ah, %ah
-- subb $0x30, %al
-- jc lmbad
--
-- cmpb $10, %al
-- jc lmuse
--
-- cmpb $0x61-0x30, %al
-- jc lmbad
--
-- subb $0x61-0x30-10, %al
-- cmpb $36, %al
-- jnc lmbad
--
--lmuse: call mode_set
-- jc lmdef
--
--lmbad: leaw unknt, %si
-- call prtstr
-- jmp lm2
--lmscan: cmpb $0, adapter # Scanning only on EGA/VGA
-- jz lmbad
--
-- movw $0, mt_end # Scanning of modes is
-- movb $1, scanning # done as new autodetection.
-- call mode_table
-- jmp listm0
--lmdef: ret
--
--# Additional parts of mode_set... (relative jumps, you know)
--setv7: # Video7 extended modes
-- DO_STORE
-- subb $VIDEO_FIRST_V7>>8, %bh
-- movw $0x6f05, %ax
-- int $0x10
-- stc
-- ret
--
--_setrec: jmp setrec # Ugly...
--_set_80x25: jmp set_80x25
--
--# Aliases for backward compatibility.
--setalias:
-- movw $VIDEO_80x25, %ax
-- incw %bx
-- jz mode_set
--
-- movb $VIDEO_8POINT-VIDEO_FIRST_SPECIAL, %al
-- incw %bx
-- jnz setbad # Fall-through!
--
--# Setting of user mode (AX=mode ID) => CF=success
--mode_set:
-- movw %ax, %fs:(0x01fa) # Store mode for use in acpi_wakeup.S
-- movw %ax, %bx
-- cmpb $0xff, %ah
-- jz setalias
--
-- testb $VIDEO_RECALC>>8, %ah
-- jnz _setrec
--
-- cmpb $VIDEO_FIRST_RESOLUTION>>8, %ah
-- jnc setres
--
-- cmpb $VIDEO_FIRST_SPECIAL>>8, %ah
-- jz setspc
--
-- cmpb $VIDEO_FIRST_V7>>8, %ah
-- jz setv7
--
-- cmpb $VIDEO_FIRST_VESA>>8, %ah
-- jnc check_vesa
--
-- orb %ah, %ah
-- jz setmenu
--
-- decb %ah
-- jz setbios
--
--setbad: clc
-- movb $0, do_restore # The screen needn't be restored
-- ret
--
--setvesa:
-- DO_STORE
-- subb $VIDEO_FIRST_VESA>>8, %bh
-- movw $0x4f02, %ax # VESA BIOS mode set call
-- int $0x10
-- cmpw $0x004f, %ax # AL=4f if implemented
-- jnz setbad # AH=0 if OK
--
-- stc
-- ret
--
--setbios:
-- DO_STORE
-- int $0x10 # Standard BIOS mode set call
-- pushw %bx
-- movb $0x0f, %ah # Check if really set
-- int $0x10
-- popw %bx
-- cmpb %bl, %al
-- jnz setbad
--
-- stc
-- ret
--
--setspc: xorb %bh, %bh # Set special mode
-- cmpb $VIDEO_LAST_SPECIAL-VIDEO_FIRST_SPECIAL, %bl
-- jnc setbad
--
-- addw %bx, %bx
-- jmp *spec_inits(%bx)
--
--setmenu:
-- orb %al, %al # 80x25 is an exception
-- jz _set_80x25
--
-- pushw %bx # Set mode chosen from menu
-- call mode_table # Build the mode table
-- popw %ax
-- shlw $2, %ax
-- addw %ax, %si
-- cmpw %di, %si
-- jnc setbad
--
-- movw (%si), %ax # Fetch mode ID
--_m_s: jmp mode_set
--
--setres: pushw %bx # Set mode chosen by resolution
-- call mode_table
-- popw %bx
-- xchgb %bl, %bh
--setr1: lodsw
-- cmpw $ASK_VGA, %ax # End of the list?
-- jz setbad
--
-- lodsw
-- cmpw %bx, %ax
-- jnz setr1
--
-- movw -4(%si), %ax # Fetch mode ID
-- jmp _m_s
--
--check_vesa:
--#ifdef CONFIG_FIRMWARE_EDID
-- leaw modelist+1024, %di
-- movw $0x4f00, %ax
-- int $0x10
-- cmpw $0x004f, %ax
-- jnz setbad
--
-- movw 4(%di), %ax
-- movw %ax, vbe_version
--#endif
-- leaw modelist+1024, %di
-- subb $VIDEO_FIRST_VESA>>8, %bh
-- movw %bx, %cx # Get mode information structure
-- movw $0x4f01, %ax
-- int $0x10
-- addb $VIDEO_FIRST_VESA>>8, %bh
-- cmpw $0x004f, %ax
-- jnz setbad
--
-- movb (%di), %al # Check capabilities.
-- andb $0x19, %al
-- cmpb $0x09, %al
-- jz setvesa # This is a text mode
--
-- movb (%di), %al # Check capabilities.
-- andb $0x99, %al
-- cmpb $0x99, %al
-- jnz _setbad # Doh! No linear frame buffer.
--
-- subb $VIDEO_FIRST_VESA>>8, %bh
-- orw $0x4000, %bx # Use linear frame buffer
-- movw $0x4f02, %ax # VESA BIOS mode set call
-- int $0x10
-- cmpw $0x004f, %ax # AL=4f if implemented
-- jnz _setbad # AH=0 if OK
--
-- movb $1, graphic_mode # flag graphic mode
-- movb $0, do_restore # no screen restore
-- stc
-- ret
--
--_setbad: jmp setbad # Ugly...
--
--# Recalculate vertical display end registers -- this fixes various
--# inconsistencies of extended modes on many adapters. Called when
--# the VIDEO_RECALC flag is set in the mode ID.
--
--setrec: subb $VIDEO_RECALC>>8, %ah # Set the base mode
-- call mode_set
-- jnc rct3
--
-- movw %gs:(0x485), %ax # Font size in pixels
-- movb %gs:(0x484), %bl # Number of rows
-- incb %bl
-- mulb %bl # Number of visible
-- decw %ax # scan lines - 1
-- movw $0x3d4, %dx
-- movw %ax, %bx
-- movb $0x12, %al # Lower 8 bits
-- movb %bl, %ah
-- outw %ax, %dx
-- movb $0x07, %al # Bits 8 and 9 in the overflow register
-- call inidx
-- xchgb %al, %ah
-- andb $0xbd, %ah
-- shrb %bh
-- jnc rct1
-- orb $0x02, %ah
--rct1: shrb %bh
-- jnc rct2
-- orb $0x40, %ah
--rct2: movb $0x07, %al
-- outw %ax, %dx
-- stc
--rct3: ret
--
--# Table of routines for setting of the special modes.
--spec_inits:
-- .word set_80x25
-- .word set_8pixel
-- .word set_80x43
-- .word set_80x28
-- .word set_current
-- .word set_80x30
-- .word set_80x34
-- .word set_80x60
-- .word set_gfx
--
--# Set the 80x25 mode. If already set, do nothing.
--set_80x25:
-- movw $0x5019, force_size # Override possibly broken BIOS
--use_80x25:
--#ifdef CONFIG_VIDEO_400_HACK
-- movw $0x1202, %ax # Force 400 scan lines
-- movb $0x30, %bl
-- int $0x10
--#else
-- movb $0x0f, %ah # Get current mode ID
-- int $0x10
-- cmpw $0x5007, %ax # Mode 7 (80x25 mono) is the only one available
-- jz st80 # on CGA/MDA/HGA and is also available on EGAM
--
-- cmpw $0x5003, %ax # Unknown mode, force 80x25 color
-- jnz force3
--
--st80: cmpb $0, adapter # CGA/MDA/HGA => mode 3/7 is always 80x25
-- jz set80
--
-- movb %gs:(0x0484), %al # This is EGA+ -- beware of 80x50 etc.
-- orb %al, %al # Some buggy BIOS'es set 0 rows
-- jz set80
--
-- cmpb $24, %al # It's hopefully correct
-- jz set80
--#endif /* CONFIG_VIDEO_400_HACK */
--force3: DO_STORE
-- movw $0x0003, %ax # Forced set
-- int $0x10
--set80: stc
-- ret
--
--# Set the 80x50/80x43 8-pixel mode. Simple BIOS calls.
--set_8pixel:
-- DO_STORE
-- call use_80x25 # The base is 80x25
--set_8pt:
-- movw $0x1112, %ax # Use 8x8 font
-- xorb %bl, %bl
-- int $0x10
-- movw $0x1200, %ax # Use alternate print screen
-- movb $0x20, %bl
-- int $0x10
-- movw $0x1201, %ax # Turn off cursor emulation
-- movb $0x34, %bl
-- int $0x10
-- movb $0x01, %ah # Define cursor scan lines 6-7
-- movw $0x0607, %cx
-- int $0x10
--set_current:
-- stc
-- ret
--
--# Set the 80x28 mode. This mode works on all VGA's, because it's a standard
--# 80x25 mode with 14-point fonts instead of 16-point.
--set_80x28:
-- DO_STORE
-- call use_80x25 # The base is 80x25
--set14: movw $0x1111, %ax # Use 9x14 font
-- xorb %bl, %bl
-- int $0x10
-- movb $0x01, %ah # Define cursor scan lines 11-12
-- movw $0x0b0c, %cx
-- int $0x10
-- stc
-- ret
--
--# Set the 80x43 mode. This mode is works on all VGA's.
--# It's a 350-scanline mode with 8-pixel font.
--set_80x43:
-- DO_STORE
-- movw $0x1201, %ax # Set 350 scans
-- movb $0x30, %bl
-- int $0x10
-- movw $0x0003, %ax # Reset video mode
-- int $0x10
-- jmp set_8pt # Use 8-pixel font
--
--# Set the 80x30 mode (all VGA's). 480 scanlines, 16-pixel font.
--set_80x30:
-- call use_80x25 # Start with real 80x25
-- DO_STORE
-- movw $0x3cc, %dx # Get CRTC port
-- inb %dx, %al
-- movb $0xd4, %dl
-- rorb %al # Mono or color?
-- jc set48a
--
-- movb $0xb4, %dl
--set48a: movw $0x0c11, %ax # Vertical sync end (also unlocks CR0-7)
-- call outidx
-- movw $0x0b06, %ax # Vertical total
-- call outidx
-- movw $0x3e07, %ax # (Vertical) overflow
-- call outidx
-- movw $0xea10, %ax # Vertical sync start
-- call outidx
-- movw $0xdf12, %ax # Vertical display end
-- call outidx
-- movw $0xe715, %ax # Vertical blank start
-- call outidx
-- movw $0x0416, %ax # Vertical blank end
-- call outidx
-- pushw %dx
-- movb $0xcc, %dl # Misc output register (read)
-- inb %dx, %al
-- movb $0xc2, %dl # (write)
-- andb $0x0d, %al # Preserve clock select bits and color bit
-- orb $0xe2, %al # Set correct sync polarity
-- outb %al, %dx
-- popw %dx
-- movw $0x501e, force_size
-- stc # That's all.
-- ret
--
--# Set the 80x34 mode (all VGA's). 480 scans, 14-pixel font.
--set_80x34:
-- call set_80x30 # Set 480 scans
-- call set14 # And 14-pt font
-- movw $0xdb12, %ax # VGA vertical display end
-- movw $0x5022, force_size
--setvde: call outidx
-- stc
-- ret
--
--# Set the 80x60 mode (all VGA's). 480 scans, 8-pixel font.
--set_80x60:
-- call set_80x30 # Set 480 scans
-- call set_8pt # And 8-pt font
-- movw $0xdf12, %ax # VGA vertical display end
-- movw $0x503c, force_size
-- jmp setvde
--
--# Special hack for ThinkPad graphics
--set_gfx:
--#ifdef CONFIG_VIDEO_GFX_HACK
-- movw $VIDEO_GFX_BIOS_AX, %ax
-- movw $VIDEO_GFX_BIOS_BX, %bx
-- int $0x10
-- movw $VIDEO_GFX_DUMMY_RESOLUTION, force_size
-- stc
--#endif
-- ret
--
--#ifdef CONFIG_VIDEO_RETAIN
--
--# Store screen contents to temporary buffer.
--store_screen:
-- cmpb $0, do_restore # Already stored?
-- jnz stsr
--
-- testb $CAN_USE_HEAP, loadflags # Have we space for storing?
-- jz stsr
--
-- pushw %ax
-- pushw %bx
-- pushw force_size # Don't force specific size
-- movw $0, force_size
-- call mode_params # Obtain params of current mode
-- popw force_size
-- movb %fs:(PARAM_VIDEO_LINES), %ah
-- movb %fs:(PARAM_VIDEO_COLS), %al
-- movw %ax, %bx # BX=dimensions
-- mulb %ah
-- movw %ax, %cx # CX=number of characters
-- addw %ax, %ax # Calculate image size
-- addw $modelist+1024+4, %ax
-- cmpw heap_end_ptr, %ax
-- jnc sts1 # Unfortunately, out of memory
--
-- movw %fs:(PARAM_CURSOR_POS), %ax # Store mode params
-- leaw modelist+1024, %di
-- stosw
-- movw %bx, %ax
-- stosw
-- pushw %ds # Store the screen
-- movw video_segment, %ds
-- xorw %si, %si
-- rep
-- movsw
-- popw %ds
-- incb do_restore # Screen will be restored later
--sts1: popw %bx
-- popw %ax
--stsr: ret
--
--# Restore screen contents from temporary buffer.
--restore_screen:
-- cmpb $0, do_restore # Has the screen been stored?
-- jz res1
--
-- call mode_params # Get parameters of current mode
-- movb %fs:(PARAM_VIDEO_LINES), %cl
-- movb %fs:(PARAM_VIDEO_COLS), %ch
-- leaw modelist+1024, %si # Screen buffer
-- lodsw # Set cursor position
-- movw %ax, %dx
-- cmpb %cl, %dh
-- jc res2
--
-- movb %cl, %dh
-- decb %dh
--res2: cmpb %ch, %dl
-- jc res3
--
-- movb %ch, %dl
-- decb %dl
--res3: movb $0x02, %ah
-- movb $0x00, %bh
-- int $0x10
-- lodsw # Display size
-- movb %ah, %dl # DL=number of lines
-- movb $0, %ah # BX=phys. length of orig. line
-- movw %ax, %bx
-- cmpb %cl, %dl # Too many?
-- jc res4
--
-- pushw %ax
-- movb %dl, %al
-- subb %cl, %al
-- mulb %bl
-- addw %ax, %si
-- addw %ax, %si
-- popw %ax
-- movb %cl, %dl
--res4: cmpb %ch, %al # Too wide?
-- jc res5
--
-- movb %ch, %al # AX=width of src. line
--res5: movb $0, %cl
-- xchgb %ch, %cl
-- movw %cx, %bp # BP=width of dest. line
-- pushw %es
-- movw video_segment, %es
-- xorw %di, %di # Move the data
-- addw %bx, %bx # Convert BX and BP to _bytes_
-- addw %bp, %bp
--res6: pushw %si
-- pushw %di
-- movw %ax, %cx
-- rep
-- movsw
-- popw %di
-- popw %si
-- addw %bp, %di
-- addw %bx, %si
-- decb %dl
-- jnz res6
--
-- popw %es # Done
--res1: ret
--#endif /* CONFIG_VIDEO_RETAIN */
--
--# Write to indexed VGA register (AL=index, AH=data, DX=index reg. port)
--outidx: outb %al, %dx
-- pushw %ax
-- movb %ah, %al
-- incw %dx
-- outb %al, %dx
-- decw %dx
-- popw %ax
-- ret
--
--# Build the table of video modes (stored after the setup.S code at the
--# `modelist' label. Each video mode record looks like:
--# .word MODE-ID (our special mode ID (see above))
--# .byte rows (number of rows)
--# .byte columns (number of columns)
--# Returns address of the end of the table in DI, the end is marked
--# with a ASK_VGA ID.
--mode_table:
-- movw mt_end, %di # Already filled?
-- orw %di, %di
-- jnz mtab1x
--
-- leaw modelist, %di # Store standard modes:
-- movl $VIDEO_80x25 + 0x50190000, %eax # The 80x25 mode (ALL)
-- stosl
-- movb adapter, %al # CGA/MDA/HGA -- no more modes
-- orb %al, %al
-- jz mtabe
--
-- decb %al
-- jnz mtabv
--
-- movl $VIDEO_8POINT + 0x502b0000, %eax # The 80x43 EGA mode
-- stosl
-- jmp mtabe
--
--mtab1x: jmp mtab1
--
--mtabv: leaw vga_modes, %si # All modes for std VGA
-- movw $vga_modes_end-vga_modes, %cx
-- rep # I'm unable to use movsw as I don't know how to store a half
-- movsb # of the expression above to cx without using explicit shr.
--
-- cmpb $0, scanning # Mode scan requested?
-- jz mscan1
--
-- call mode_scan
--mscan1:
--
--#ifdef CONFIG_VIDEO_LOCAL
-- call local_modes
--#endif /* CONFIG_VIDEO_LOCAL */
--
--#ifdef CONFIG_VIDEO_VESA
-- call vesa_modes # Detect VESA VGA modes
--#endif /* CONFIG_VIDEO_VESA */
--
--#ifdef CONFIG_VIDEO_SVGA
-- cmpb $0, scanning # Bypass when scanning
-- jnz mscan2
--
-- call svga_modes # Detect SVGA cards & modes
--mscan2:
--#endif /* CONFIG_VIDEO_SVGA */
--
--mtabe:
--
--#ifdef CONFIG_VIDEO_COMPACT
-- leaw modelist, %si
-- movw %di, %dx
-- movw %si, %di
--cmt1: cmpw %dx, %si # Scan all modes
-- jz cmt2
--
-- leaw modelist, %bx # Find in previous entries
-- movw 2(%si), %cx
--cmt3: cmpw %bx, %si
-- jz cmt4
--
-- cmpw 2(%bx), %cx # Found => don't copy this entry
-- jz cmt5
--
-- addw $4, %bx
-- jmp cmt3
--
--cmt4: movsl # Copy entry
-- jmp cmt1
--
--cmt5: addw $4, %si # Skip entry
-- jmp cmt1
--
--cmt2:
--#endif /* CONFIG_VIDEO_COMPACT */
--
-- movw $ASK_VGA, (%di) # End marker
-- movw %di, mt_end
--mtab1: leaw modelist, %si # SI=mode list, DI=list end
--ret0: ret
--
--# Modes usable on all standard VGAs
--vga_modes:
-- .word VIDEO_8POINT
-- .word 0x5032 # 80x50
-- .word VIDEO_80x43
-- .word 0x502b # 80x43
-- .word VIDEO_80x28
-- .word 0x501c # 80x28
-- .word VIDEO_80x30
-- .word 0x501e # 80x30
-- .word VIDEO_80x34
-- .word 0x5022 # 80x34
-- .word VIDEO_80x60
-- .word 0x503c # 80x60
--#ifdef CONFIG_VIDEO_GFX_HACK
-- .word VIDEO_GFX_HACK
-- .word VIDEO_GFX_DUMMY_RESOLUTION
--#endif
--
--vga_modes_end:
--# Detect VESA modes.
--
--#ifdef CONFIG_VIDEO_VESA
--vesa_modes:
-- cmpb $2, adapter # VGA only
-- jnz ret0
--
-- movw %di, %bp # BP=original mode table end
-- addw $0x200, %di # Buffer space
-- movw $0x4f00, %ax # VESA Get card info call
-- int $0x10
-- movw %bp, %di
-- cmpw $0x004f, %ax # Successful?
-- jnz ret0
--
-- cmpw $0x4556, 0x200(%di)
-- jnz ret0
--
-- cmpw $0x4153, 0x202(%di)
-- jnz ret0
--
-- movw $vesa_name, card_name # Set name to "VESA VGA"
-- pushw %gs
-- lgsw 0x20e(%di), %si # GS:SI=mode list
-- movw $128, %cx # Iteration limit
--vesa1:
--# gas version 2.9.1, using BFD version 2.9.1.0.23 buggers the next inst.
--# XXX: lodsw %gs:(%si), %ax # Get next mode in the list
-- gs; lodsw
-- cmpw $0xffff, %ax # End of the table?
-- jz vesar
--
-- cmpw $0x0080, %ax # Check validity of mode ID
-- jc vesa2
--
-- orb %ah, %ah # Valid IDs: 0x0000-0x007f/0x0100-0x07ff
-- jz vesan # Certain BIOSes report 0x80-0xff!
--
-- cmpw $0x0800, %ax
-- jnc vesae
--
--vesa2: pushw %cx
-- movw %ax, %cx # Get mode information structure
-- movw $0x4f01, %ax
-- int $0x10
-- movw %cx, %bx # BX=mode number
-- addb $VIDEO_FIRST_VESA>>8, %bh
-- popw %cx
-- cmpw $0x004f, %ax
-- jnz vesan # Don't report errors (buggy BIOSES)
--
-- movb (%di), %al # Check capabilities. We require
-- andb $0x19, %al # a color text mode.
-- cmpb $0x09, %al
-- jnz vesan
--
-- cmpw $0xb800, 8(%di) # Standard video memory address required
-- jnz vesan
--
-- testb $2, (%di) # Mode characteristics supplied?
-- movw %bx, (%di) # Store mode number
-- jz vesa3
--
-- xorw %dx, %dx
-- movw 0x12(%di), %bx # Width
-- orb %bh, %bh
-- jnz vesan
--
-- movb %bl, 0x3(%di)
-- movw 0x14(%di), %ax # Height
-- orb %ah, %ah
-- jnz vesan
--
-- movb %al, 2(%di)
-- mulb %bl
-- cmpw $8193, %ax # Small enough for Linux console driver?
-- jnc vesan
--
-- jmp vesaok
--
--vesa3: subw $0x8108, %bx # This mode has no detailed info specified,
-- jc vesan # so it must be a standard VESA mode.
--
-- cmpw $5, %bx
-- jnc vesan
--
-- movw vesa_text_mode_table(%bx), %ax
-- movw %ax, 2(%di)
--vesaok: addw $4, %di # The mode is valid. Store it.
--vesan: loop vesa1 # Next mode. Limit exceeded => error
--vesae: leaw vesaer, %si
-- call prtstr
-- movw %bp, %di # Discard already found modes.
--vesar: popw %gs
-- ret
--
--# Dimensions of standard VESA text modes
--vesa_text_mode_table:
-- .byte 60, 80 # 0108
-- .byte 25, 132 # 0109
-- .byte 43, 132 # 010A
-- .byte 50, 132 # 010B
-- .byte 60, 132 # 010C
--#endif /* CONFIG_VIDEO_VESA */
--
--# Scan for video modes. A bit dirty, but should work.
--mode_scan:
-- movw $0x0100, %cx # Start with mode 0
--scm1: movb $0, %ah # Test the mode
-- movb %cl, %al
-- int $0x10
-- movb $0x0f, %ah
-- int $0x10
-- cmpb %cl, %al
-- jnz scm2 # Mode not set
--
-- movw $0x3c0, %dx # Test if it's a text mode
-- movb $0x10, %al # Mode bits
-- call inidx
-- andb $0x03, %al
-- jnz scm2
--
-- movb $0xce, %dl # Another set of mode bits
-- movb $0x06, %al
-- call inidx
-- shrb %al
-- jc scm2
--
-- movb $0xd4, %dl # Cursor location
-- movb $0x0f, %al
-- call inidx
-- orb %al, %al
-- jnz scm2
--
-- movw %cx, %ax # Ok, store the mode
-- stosw
-- movb %gs:(0x484), %al # Number of rows
-- incb %al
-- stosb
-- movw %gs:(0x44a), %ax # Number of columns
-- stosb
--scm2: incb %cl
-- jns scm1
--
-- movw $0x0003, %ax # Return back to mode 3
-- int $0x10
-- ret
--
--tstidx: outw %ax, %dx # OUT DX,AX and inidx
--inidx: outb %al, %dx # Read from indexed VGA register
-- incw %dx # AL=index, DX=index reg port -> AL=data
-- inb %dx, %al
-- decw %dx
-- ret
--
--# Try to detect type of SVGA card and supply (usually approximate) video
--# mode table for it.
--
--#ifdef CONFIG_VIDEO_SVGA
--svga_modes:
-- leaw svga_table, %si # Test all known SVGA adapters
--dosvga: lodsw
-- movw %ax, %bp # Default mode table
-- orw %ax, %ax
-- jz didsv1
--
-- lodsw # Pointer to test routine
-- pushw %si
-- pushw %di
-- pushw %es
-- movw $0xc000, %bx
-- movw %bx, %es
-- call *%ax # Call test routine
-- popw %es
-- popw %di
-- popw %si
-- orw %bp, %bp
-- jz dosvga
--
-- movw %bp, %si # Found, copy the modes
-- movb svga_prefix, %ah
--cpsvga: lodsb
-- orb %al, %al
-- jz didsv
--
-- stosw
-- movsw
-- jmp cpsvga
--
--didsv: movw %si, card_name # Store pointer to card name
--didsv1: ret
--
--# Table of all known SVGA cards. For each card, we store a pointer to
--# a table of video modes supported by the card and a pointer to a routine
--# used for testing of presence of the card. The video mode table is always
--# followed by the name of the card or the chipset.
--svga_table:
-- .word ati_md, ati_test
-- .word oak_md, oak_test
-- .word paradise_md, paradise_test
-- .word realtek_md, realtek_test
-- .word s3_md, s3_test
-- .word chips_md, chips_test
-- .word video7_md, video7_test
-- .word cirrus5_md, cirrus5_test
-- .word cirrus6_md, cirrus6_test
-- .word cirrus1_md, cirrus1_test
-- .word ahead_md, ahead_test
-- .word everex_md, everex_test
-- .word genoa_md, genoa_test
-- .word trident_md, trident_test
-- .word tseng_md, tseng_test
-- .word 0
--
--# Test routines and mode tables:
--
--# S3 - The test algorithm was taken from the SuperProbe package
--# for XFree86 1.2.1. Report bugs to Christoph.Niemann@linux.org
--s3_test:
-- movw $0x0f35, %cx # we store some constants in cl/ch
-- movw $0x03d4, %dx
-- movb $0x38, %al
-- call inidx
-- movb %al, %bh # store current CRT-register 0x38
-- movw $0x0038, %ax
-- call outidx # disable writing to special regs
-- movb %cl, %al # check whether we can write special reg 0x35
-- call inidx
-- movb %al, %bl # save the current value of CRT reg 0x35
-- andb $0xf0, %al # clear bits 0-3
-- movb %al, %ah
-- movb %cl, %al # and write it to CRT reg 0x35
-- call outidx
-- call inidx # now read it back
-- andb %ch, %al # clear the upper 4 bits
-- jz s3_2 # the first test failed. But we have a
--
-- movb %bl, %ah # second chance
-- movb %cl, %al
-- call outidx
-- jmp s3_1 # do the other tests
--
--s3_2: movw %cx, %ax # load ah with 0xf and al with 0x35
-- orb %bl, %ah # set the upper 4 bits of ah with the orig value
-- call outidx # write ...
-- call inidx # ... and reread
-- andb %cl, %al # turn off the upper 4 bits
-- pushw %ax
-- movb %bl, %ah # restore old value in register 0x35
-- movb %cl, %al
-- call outidx
-- popw %ax
-- cmpb %ch, %al # setting lower 4 bits was successful => bad
-- je no_s3 # writing is allowed => this is not an S3
--
--s3_1: movw $0x4838, %ax # allow writing to special regs by putting
-- call outidx # magic number into CRT-register 0x38
-- movb %cl, %al # check whether we can write special reg 0x35
-- call inidx
-- movb %al, %bl
-- andb $0xf0, %al
-- movb %al, %ah
-- movb %cl, %al
-- call outidx
-- call inidx
-- andb %ch, %al
-- jnz no_s3 # no, we can't write => no S3
--
-- movw %cx, %ax
-- orb %bl, %ah
-- call outidx
-- call inidx
-- andb %ch, %al
-- pushw %ax
-- movb %bl, %ah # restore old value in register 0x35
-- movb %cl, %al
-- call outidx
-- popw %ax
-- cmpb %ch, %al
-- jne no_s31 # writing not possible => no S3
-- movb $0x30, %al
-- call inidx # now get the S3 id ...
-- leaw idS3, %di
-- movw $0x10, %cx
-- repne
-- scasb
-- je no_s31
--
-- movb %bh, %ah
-- movb $0x38, %al
-- jmp s3rest
--
--no_s3: movb $0x35, %al # restore CRT register 0x35
-- movb %bl, %ah
-- call outidx
--no_s31: xorw %bp, %bp # Detection failed
--s3rest: movb %bh, %ah
-- movb $0x38, %al # restore old value of CRT register 0x38
-- jmp outidx
--
--idS3: .byte 0x81, 0x82, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95
-- .byte 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa8, 0xb0
--
--s3_md: .byte 0x54, 0x2b, 0x84
-- .byte 0x55, 0x19, 0x84
-- .byte 0
-- .ascii "S3"
-- .byte 0
--
--# ATI cards.
--ati_test:
-- leaw idati, %si
-- movw $0x31, %di
-- movw $0x09, %cx
-- repe
-- cmpsb
-- je atiok
--
-- xorw %bp, %bp
--atiok: ret
--
--idati: .ascii "761295520"
--
--ati_md: .byte 0x23, 0x19, 0x84
-- .byte 0x33, 0x2c, 0x84
-- .byte 0x22, 0x1e, 0x64
-- .byte 0x21, 0x19, 0x64
-- .byte 0x58, 0x21, 0x50
-- .byte 0x5b, 0x1e, 0x50
-- .byte 0
-- .ascii "ATI"
-- .byte 0
--
--# AHEAD
--ahead_test:
-- movw $0x200f, %ax
-- movw $0x3ce, %dx
-- outw %ax, %dx
-- incw %dx
-- inb %dx, %al
-- cmpb $0x20, %al
-- je isahed
--
-- cmpb $0x21, %al
-- je isahed
--
-- xorw %bp, %bp
--isahed: ret
--
--ahead_md:
-- .byte 0x22, 0x2c, 0x84
-- .byte 0x23, 0x19, 0x84
-- .byte 0x24, 0x1c, 0x84
-- .byte 0x2f, 0x32, 0xa0
-- .byte 0x32, 0x22, 0x50
-- .byte 0x34, 0x42, 0x50
-- .byte 0
-- .ascii "Ahead"
-- .byte 0
--
--# Chips & Tech.
--chips_test:
-- movw $0x3c3, %dx
-- inb %dx, %al
-- orb $0x10, %al
-- outb %al, %dx
-- movw $0x104, %dx
-- inb %dx, %al
-- movb %al, %bl
-- movw $0x3c3, %dx
-- inb %dx, %al
-- andb $0xef, %al
-- outb %al, %dx
-- cmpb $0xa5, %bl
-- je cantok
--
-- xorw %bp, %bp
--cantok: ret
--
--chips_md:
-- .byte 0x60, 0x19, 0x84
-- .byte 0x61, 0x32, 0x84
-- .byte 0
-- .ascii "Chips & Technologies"
-- .byte 0
--
--# Cirrus Logic 5X0
--cirrus1_test:
-- movw $0x3d4, %dx
-- movb $0x0c, %al
-- outb %al, %dx
-- incw %dx
-- inb %dx, %al
-- movb %al, %bl
-- xorb %al, %al
-- outb %al, %dx
-- decw %dx
-- movb $0x1f, %al
-- outb %al, %dx
-- incw %dx
-- inb %dx, %al
-- movb %al, %bh
-- xorb %ah, %ah
-- shlb $4, %al
-- movw %ax, %cx
-- movb %bh, %al
-- shrb $4, %al
-- addw %ax, %cx
-- shlw $8, %cx
-- addw $6, %cx
-- movw %cx, %ax
-- movw $0x3c4, %dx
-- outw %ax, %dx
-- incw %dx
-- inb %dx, %al
-- andb %al, %al
-- jnz nocirr
--
-- movb %bh, %al
-- outb %al, %dx
-- inb %dx, %al
-- cmpb $0x01, %al
-- je iscirr
--
--nocirr: xorw %bp, %bp
--iscirr: movw $0x3d4, %dx
-- movb %bl, %al
-- xorb %ah, %ah
-- shlw $8, %ax
-- addw $0x0c, %ax
-- outw %ax, %dx
-- ret
--
--cirrus1_md:
-- .byte 0x1f, 0x19, 0x84
-- .byte 0x20, 0x2c, 0x84
-- .byte 0x22, 0x1e, 0x84
-- .byte 0x31, 0x25, 0x64
-- .byte 0
-- .ascii "Cirrus Logic 5X0"
-- .byte 0
--
--# Cirrus Logic 54XX
--cirrus5_test:
-- movw $0x3c4, %dx
-- movb $6, %al
-- call inidx
-- movb %al, %bl # BL=backup
-- movw $6, %ax
-- call tstidx
-- cmpb $0x0f, %al
-- jne c5fail
--
-- movw $0x1206, %ax
-- call tstidx
-- cmpb $0x12, %al
-- jne c5fail
--
-- movb $0x1e, %al
-- call inidx
-- movb %al, %bh
-- movb %bh, %ah
-- andb $0xc0, %ah
-- movb $0x1e, %al
-- call tstidx
-- andb $0x3f, %al
-- jne c5xx
--
-- movb $0x1e, %al
-- movb %bh, %ah
-- orb $0x3f, %ah
-- call tstidx
-- xorb $0x3f, %al
-- andb $0x3f, %al
--c5xx: pushf
-- movb $0x1e, %al
-- movb %bh, %ah
-- outw %ax, %dx
-- popf
-- je c5done
--
--c5fail: xorw %bp, %bp
--c5done: movb $6, %al
-- movb %bl, %ah
-- outw %ax, %dx
-- ret
--
--cirrus5_md:
-- .byte 0x14, 0x19, 0x84
-- .byte 0x54, 0x2b, 0x84
-- .byte 0
-- .ascii "Cirrus Logic 54XX"
-- .byte 0
--
--# Cirrus Logic 64XX -- no known extra modes, but must be identified, because
--# it's misidentified by the Ahead test.
--cirrus6_test:
-- movw $0x3ce, %dx
-- movb $0x0a, %al
-- call inidx
-- movb %al, %bl # BL=backup
-- movw $0xce0a, %ax
-- call tstidx
-- orb %al, %al
-- jne c2fail
--
-- movw $0xec0a, %ax
-- call tstidx
-- cmpb $0x01, %al
-- jne c2fail
--
-- movb $0xaa, %al
-- call inidx # 4X, 5X, 7X and 8X are valid 64XX chip ID's.
-- shrb $4, %al
-- subb $4, %al
-- jz c6done
--
-- decb %al
-- jz c6done
--
-- subb $2, %al
-- jz c6done
--
-- decb %al
-- jz c6done
--
--c2fail: xorw %bp, %bp
--c6done: movb $0x0a, %al
-- movb %bl, %ah
-- outw %ax, %dx
-- ret
--
--cirrus6_md:
-- .byte 0
-- .ascii "Cirrus Logic 64XX"
-- .byte 0
--
--# Everex / Trident
--everex_test:
-- movw $0x7000, %ax
-- xorw %bx, %bx
-- int $0x10
-- cmpb $0x70, %al
-- jne noevrx
--
-- shrw $4, %dx
-- cmpw $0x678, %dx
-- je evtrid
--
-- cmpw $0x236, %dx
-- jne evrxok
--
--evtrid: leaw trident_md, %bp
--evrxok: ret
--
--noevrx: xorw %bp, %bp
-- ret
--
--everex_md:
-- .byte 0x03, 0x22, 0x50
-- .byte 0x04, 0x3c, 0x50
-- .byte 0x07, 0x2b, 0x64
-- .byte 0x08, 0x4b, 0x64
-- .byte 0x0a, 0x19, 0x84
-- .byte 0x0b, 0x2c, 0x84
-- .byte 0x16, 0x1e, 0x50
-- .byte 0x18, 0x1b, 0x64
-- .byte 0x21, 0x40, 0xa0
-- .byte 0x40, 0x1e, 0x84
-- .byte 0
-- .ascii "Everex/Trident"
-- .byte 0
--
--# Genoa.
--genoa_test:
-- leaw idgenoa, %si # Check Genoa 'clues'
-- xorw %ax, %ax
-- movb %es:(0x37), %al
-- movw %ax, %di
-- movw $0x04, %cx
-- decw %si
-- decw %di
--l1: incw %si
-- incw %di
-- movb (%si), %al
-- testb %al, %al
-- jz l2
--
-- cmpb %es:(%di), %al
--l2: loope l1
-- orw %cx, %cx
-- je isgen
--
-- xorw %bp, %bp
--isgen: ret
--
--idgenoa: .byte 0x77, 0x00, 0x99, 0x66
--
--genoa_md:
-- .byte 0x58, 0x20, 0x50
-- .byte 0x5a, 0x2a, 0x64
-- .byte 0x60, 0x19, 0x84
-- .byte 0x61, 0x1d, 0x84
-- .byte 0x62, 0x20, 0x84
-- .byte 0x63, 0x2c, 0x84
-- .byte 0x64, 0x3c, 0x84
-- .byte 0x6b, 0x4f, 0x64
-- .byte 0x72, 0x3c, 0x50
-- .byte 0x74, 0x42, 0x50
-- .byte 0x78, 0x4b, 0x64
-- .byte 0
-- .ascii "Genoa"
-- .byte 0
--
--# OAK
--oak_test:
-- leaw idoakvga, %si
-- movw $0x08, %di
-- movw $0x08, %cx
-- repe
-- cmpsb
-- je isoak
--
-- xorw %bp, %bp
--isoak: ret
--
--idoakvga: .ascii "OAK VGA "
--
--oak_md: .byte 0x4e, 0x3c, 0x50
-- .byte 0x4f, 0x3c, 0x84
-- .byte 0x50, 0x19, 0x84
-- .byte 0x51, 0x2b, 0x84
-- .byte 0
-- .ascii "OAK"
-- .byte 0
--
--# WD Paradise.
--paradise_test:
-- leaw idparadise, %si
-- movw $0x7d, %di
-- movw $0x04, %cx
-- repe
-- cmpsb
-- je ispara
--
-- xorw %bp, %bp
--ispara: ret
--
--idparadise: .ascii "VGA="
--
--paradise_md:
-- .byte 0x41, 0x22, 0x50
-- .byte 0x47, 0x1c, 0x84
-- .byte 0x55, 0x19, 0x84
-- .byte 0x54, 0x2c, 0x84
-- .byte 0
-- .ascii "Paradise"
-- .byte 0
--
--# Trident.
--trident_test:
-- movw $0x3c4, %dx
-- movb $0x0e, %al
-- outb %al, %dx
-- incw %dx
-- inb %dx, %al
-- xchgb %al, %ah
-- xorb %al, %al
-- outb %al, %dx
-- inb %dx, %al
-- xchgb %ah, %al
-- movb %al, %bl # Strange thing ... in the book this wasn't
-- andb $0x02, %bl # necessary but it worked on my card which
-- jz setb2 # is a trident. Without it the screen goes
-- # blurred ...
-- andb $0xfd, %al
-- jmp clrb2
--
--setb2: orb $0x02, %al
--clrb2: outb %al, %dx
-- andb $0x0f, %ah
-- cmpb $0x02, %ah
-- je istrid
--
-- xorw %bp, %bp
--istrid: ret
--
--trident_md:
-- .byte 0x50, 0x1e, 0x50
-- .byte 0x51, 0x2b, 0x50
-- .byte 0x52, 0x3c, 0x50
-- .byte 0x57, 0x19, 0x84
-- .byte 0x58, 0x1e, 0x84
-- .byte 0x59, 0x2b, 0x84
-- .byte 0x5a, 0x3c, 0x84
-- .byte 0
-- .ascii "Trident"
-- .byte 0
--
--# Tseng.
--tseng_test:
-- movw $0x3cd, %dx
-- inb %dx, %al # Could things be this simple ! :-)
-- movb %al, %bl
-- movb $0x55, %al
-- outb %al, %dx
-- inb %dx, %al
-- movb %al, %ah
-- movb %bl, %al
-- outb %al, %dx
-- cmpb $0x55, %ah
-- je istsen
--
--isnot: xorw %bp, %bp
--istsen: ret
--
--tseng_md:
-- .byte 0x26, 0x3c, 0x50
-- .byte 0x2a, 0x28, 0x64
-- .byte 0x23, 0x19, 0x84
-- .byte 0x24, 0x1c, 0x84
-- .byte 0x22, 0x2c, 0x84
-- .byte 0x21, 0x3c, 0x84
-- .byte 0
-- .ascii "Tseng"
-- .byte 0
--
--# Video7.
--video7_test:
-- movw $0x3cc, %dx
-- inb %dx, %al
-- movw $0x3b4, %dx
-- andb $0x01, %al
-- jz even7
--
-- movw $0x3d4, %dx
--even7: movb $0x0c, %al
-- outb %al, %dx
-- incw %dx
-- inb %dx, %al
-- movb %al, %bl
-- movb $0x55, %al
-- outb %al, %dx
-- inb %dx, %al
-- decw %dx
-- movb $0x1f, %al
-- outb %al, %dx
-- incw %dx
-- inb %dx, %al
-- movb %al, %bh
-- decw %dx
-- movb $0x0c, %al
-- outb %al, %dx
-- incw %dx
-- movb %bl, %al
-- outb %al, %dx
-- movb $0x55, %al
-- xorb $0xea, %al
-- cmpb %bh, %al
-- jne isnot
--
-- movb $VIDEO_FIRST_V7>>8, svga_prefix # Use special mode switching
-- ret
--
--video7_md:
-- .byte 0x40, 0x2b, 0x50
-- .byte 0x43, 0x3c, 0x50
-- .byte 0x44, 0x3c, 0x64
-- .byte 0x41, 0x19, 0x84
-- .byte 0x42, 0x2c, 0x84
-- .byte 0x45, 0x1c, 0x84
-- .byte 0
-- .ascii "Video 7"
-- .byte 0
--
--# Realtek VGA
--realtek_test:
-- leaw idrtvga, %si
-- movw $0x45, %di
-- movw $0x0b, %cx
-- repe
-- cmpsb
-- je isrt
--
-- xorw %bp, %bp
--isrt: ret
--
--idrtvga: .ascii "REALTEK VGA"
--
--realtek_md:
-- .byte 0x1a, 0x3c, 0x50
-- .byte 0x1b, 0x19, 0x84
-- .byte 0x1c, 0x1e, 0x84
-- .byte 0x1d, 0x2b, 0x84
-- .byte 0x1e, 0x3c, 0x84
-- .byte 0
-- .ascii "REALTEK"
-- .byte 0
--
--#endif /* CONFIG_VIDEO_SVGA */
--
--# User-defined local mode table (VGA only)
--#ifdef CONFIG_VIDEO_LOCAL
--local_modes:
-- leaw local_mode_table, %si
--locm1: lodsw
-- orw %ax, %ax
-- jz locm2
--
-- stosw
-- movsw
-- jmp locm1
--
--locm2: ret
--
--# This is the table of local video modes which can be supplied manually
--# by the user. Each entry consists of mode ID (word) and dimensions
--# (byte for column count and another byte for row count). These modes
--# are placed before all SVGA and VESA modes and override them if table
--# compacting is enabled. The table must end with a zero word followed
--# by NUL-terminated video adapter name.
--local_mode_table:
-- .word 0x0100 # Example: 40x25
-- .byte 25,40
-- .word 0
-- .ascii "Local"
-- .byte 0
--#endif /* CONFIG_VIDEO_LOCAL */
--
--# Read a key and return the ASCII code in al, scan code in ah
--getkey: xorb %ah, %ah
-- int $0x16
-- ret
--
--# Read a key with a timeout of 30 seconds.
--# The hardware clock is used to get the time.
--getkt: call gettime
-- addb $30, %al # Wait 30 seconds
-- cmpb $60, %al
-- jl lminute
--
-- subb $60, %al
--lminute:
-- movb %al, %cl
--again: movb $0x01, %ah
-- int $0x16
-- jnz getkey # key pressed, so get it
--
-- call gettime
-- cmpb %cl, %al
-- jne again
--
-- movb $0x20, %al # timeout, return `space'
-- ret
--
--# Flush the keyboard buffer
--flush: movb $0x01, %ah
-- int $0x16
-- jz empty
--
-- xorb %ah, %ah
-- int $0x16
-- jmp flush
--
--empty: ret
--
--# Print hexadecimal number.
--prthw: pushw %ax
-- movb %ah, %al
-- call prthb
-- popw %ax
--prthb: pushw %ax
-- shrb $4, %al
-- call prthn
-- popw %ax
-- andb $0x0f, %al
--prthn: cmpb $0x0a, %al
-- jc prth1
--
-- addb $0x07, %al
--prth1: addb $0x30, %al
-- jmp prtchr
--
--# Print decimal number in al
--prtdec: pushw %ax
-- pushw %cx
-- xorb %ah, %ah
-- movb $0x0a, %cl
-- idivb %cl
-- cmpb $0x09, %al
-- jbe lt100
--
-- call prtdec
-- jmp skip10
--
--lt100: addb $0x30, %al
-- call prtchr
--skip10: movb %ah, %al
-- addb $0x30, %al
-- call prtchr
-- popw %cx
-- popw %ax
-- ret
--
--store_edid:
--#ifdef CONFIG_FIRMWARE_EDID
-- pushw %es # just save all registers
-- pushw %ax
-- pushw %bx
-- pushw %cx
-- pushw %dx
-- pushw %di
--
-- pushw %fs
-- popw %es
--
-- movl $0x13131313, %eax # memset block with 0x13
-- movw $32, %cx
-- movw $0x140, %di
-- cld
-- rep
-- stosl
--
-- cmpw $0x0200, vbe_version # only do EDID on >= VBE2.0
-- jl no_edid
--
-- pushw %es # save ES
-- xorw %di, %di # Report Capability
-- pushw %di
-- popw %es # ES:DI must be 0:0
-- movw $0x4f15, %ax
-- xorw %bx, %bx
-- xorw %cx, %cx
-- int $0x10
-- popw %es # restore ES
--
-- cmpb $0x00, %ah # call successful
-- jne no_edid
--
-- cmpb $0x4f, %al # function supported
-- jne no_edid
--
-- movw $0x4f15, %ax # do VBE/DDC
-- movw $0x01, %bx
-- movw $0x00, %cx
-- movw $0x00, %dx
-- movw $0x140, %di
-- int $0x10
--
--no_edid:
-- popw %di # restore all registers
-- popw %dx
-- popw %cx
-- popw %bx
-- popw %ax
-- popw %es
--#endif
-- ret
--
--# VIDEO_SELECT-only variables
--mt_end: .word 0 # End of video mode table if built
--edit_buf: .space 6 # Line editor buffer
--card_name: .word 0 # Pointer to adapter name
--scanning: .byte 0 # Performing mode scan
--do_restore: .byte 0 # Screen contents altered during mode change
--svga_prefix: .byte VIDEO_FIRST_BIOS>>8 # Default prefix for BIOS modes
--graphic_mode: .byte 0 # Graphic mode with a linear frame buffer
--dac_size: .byte 6 # DAC bit depth
--vbe_version: .word 0 # VBE bios version
--
--# Status messages
--keymsg: .ascii "Press <RETURN> to see video modes available, "
-- .ascii "<SPACE> to continue or wait 30 secs"
-- .byte 0x0d, 0x0a, 0
--
--listhdr: .byte 0x0d, 0x0a
-- .ascii "Mode: COLSxROWS:"
--
--crlft: .byte 0x0d, 0x0a, 0
--
--prompt: .byte 0x0d, 0x0a
-- .asciz "Enter mode number or `scan': "
--
--unknt: .asciz "Unknown mode ID. Try again."
--
--badmdt: .ascii "You passed an undefined mode number."
-- .byte 0x0d, 0x0a, 0
--
--vesaer: .ascii "Error: Scanning of VESA modes failed. Please "
-- .ascii "report to <mj@ucw.cz>."
-- .byte 0x0d, 0x0a, 0
--
--old_name: .asciz "CGA/MDA/HGA"
--
--ega_name: .asciz "EGA"
--
--svga_name: .ascii " "
--
--vga_name: .asciz "VGA"
--
--vesa_name: .asciz "VESA"
--
--name_bann: .asciz "Video adapter: "
--#endif /* CONFIG_VIDEO_SELECT */
--
--# Other variables:
--adapter: .byte 0 # Video adapter: 0=CGA/MDA/HGA,1=EGA,2=VGA
--video_segment: .word 0xb800 # Video memory segment
--force_size: .word 0 # Use this size instead of the one in BIOS vars
-diff -puN /dev/null arch/i386/boot/video.c
---- /dev/null
-+++ a/arch/i386/boot/video.c
-@@ -0,0 +1,456 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/video.c
-+ *
-+ * Select video mode
-+ */
-+
-+#include "boot.h"
-+#include "video.h"
-+#include "vesa.h"
-+
-+/*
-+ * Mode list variables
-+ */
-+static struct card_info cards[]; /* List of cards to probe for */
-+
-+/*
-+ * Common variables
-+ */
-+int adapter; /* 0=CGA/MDA/HGC, 1=EGA, 2=VGA+ */
-+u16 video_segment;
-+int force_x, force_y; /* Don't query the BIOS for cols/rows */
-+
-+int do_restore = 0; /* Screen contents changed during mode flip */
-+int graphic_mode; /* Graphic mode with linear frame buffer */
-+
-+static void store_cursor_position(void)
-+{
-+ u16 curpos;
-+ u16 ax, bx;
-+
-+ ax = 0x0300;
-+ bx = 0;
-+ asm(INT10
-+ : "=d" (curpos), "+a" (ax), "+b" (bx)
-+ : : "ecx", "esi", "edi");
-+
-+ boot_params.screen_info.orig_x = curpos;
-+ boot_params.screen_info.orig_y = curpos >> 8;
-+}
-+
-+static void store_video_mode(void)
-+{
-+ u16 ax, page;
-+
-+ /* N.B.: the saving of the video page here is a bit silly,
-+ since we pretty much assume page 0 everywhere. */
-+ ax = 0x0f00;
-+ asm(INT10
-+ : "+a" (ax), "=b" (page)
-+ : : "ecx", "edx", "esi", "edi");
-+
-+ /* Not all BIOSes are clean with respect to the top bit */
-+ boot_params.screen_info.orig_video_mode = ax & 0x7f;
-+ boot_params.screen_info.orig_video_page = page;
-+}
-+
-+/*
-+ * Store the video mode parameters for later usage by the kernel.
-+ * This is done by asking the BIOS except for the rows/columns
-+ * parameters in the default 80x25 mode -- these are set directly,
-+ * because some very obscure BIOSes supply insane values.
-+ */
-+static void store_mode_params(void)
-+{
-+ u16 font_size;
-+ int x, y;
-+
-+ /* For graphics mode, it is up to the mode-setting driver
-+ (currently only video-vesa.c) to store the parameters */
-+ if (graphic_mode)
-+ return;
-+
-+ store_cursor_position();
-+ store_video_mode();
-+
-+ if (boot_params.screen_info.orig_video_mode == 0x07) {
-+ /* MDA, HGC, or VGA in monochrome mode */
-+ video_segment = 0xb000;
-+ } else {
-+ /* CGA, EGA, VGA and so forth */
-+ video_segment = 0xb800;
-+ }
-+
-+ set_fs(0);
-+ font_size = rdfs16(0x485); /* Font size, BIOS area */
-+ boot_params.screen_info.orig_video_points = font_size;
-+
-+ x = rdfs16(0x44a);
-+ y = (adapter == ADAPTER_CGA) ? 25 : rdfs8(0x484)+1;
-+
-+ if (force_x)
-+ x = force_x;
-+ if (force_y)
-+ y = force_y;
-+
-+ boot_params.screen_info.orig_video_cols = x;
-+ boot_params.screen_info.orig_video_lines = y;
-+}
-+
-+/* Probe the video drivers and have them generate their mode lists. */
-+static void probe_cards(int unsafe)
-+{
-+ struct card_info *card;
-+ static u8 probed[2];
-+
-+ if (probed[unsafe])
-+ return;
-+
-+ probed[unsafe] = 1;
-+
-+ for (card = video_cards; card < video_cards_end; card++) {
-+ if (card->unsafe == unsafe) {
-+ if (card->probe)
-+ card->nmodes = card->probe();
-+ else
-+ card->nmodes = 0;
-+ }
-+ }
-+}
-+
-+/* Test if a mode is defined */
-+int mode_defined(u16 mode)
-+{
-+ struct card_info *card;
-+ struct mode_info *mi;
-+ int i;
-+
-+ for (card = video_cards; card < video_cards_end; card++) {
-+ mi = card->modes;
-+ for (i = 0; i < card->nmodes; i++, mi++) {
-+ if (mi->mode == mode)
-+ return 1;
-+ }
-+ }
-+
-+ return 0;
-+}
-+
-+/* Set mode (without recalc) */
-+static int raw_set_mode(u16 mode)
-+{
-+ int nmode, i;
-+ struct card_info *card;
-+ struct mode_info *mi;
-+
-+ /* Drop the recalc bit if set */
-+ mode &= ~VIDEO_RECALC;
-+
-+ /* Scan for mode based on fixed ID, position, or resolution */
-+ nmode = 0;
-+ for (card = video_cards; card < video_cards_end; card++) {
-+ mi = card->modes;
-+ for (i = 0; i < card->nmodes; i++, mi++) {
-+ int visible = mi->x || mi->y;
-+
-+ if ((mode == nmode && visible) ||
-+ mode == mi->mode ||
-+ mode == (mi->y << 8)+mi->x)
-+ return card->set_mode(mi);
-+
-+ if (visible)
-+ nmode++;
-+ }
-+ }
-+
-+ /* Nothing found? Is it an "exceptional" (unprobed) mode? */
-+ for (card = video_cards; card < video_cards_end; card++) {
-+ if (mode >= card->xmode_first &&
-+ mode < card->xmode_first+card->xmode_n) {
-+ struct mode_info mix;
-+ mix.mode = mode;
-+ mix.x = mix.y = 0;
-+ return card->set_mode(&mix);
-+ }
-+ }
-+
-+ /* Otherwise, failure... */
-+ return -1;
-+}
-+
-+/*
-+ * Recalculate the vertical video cutoff (hack!)
-+ */
-+static void vga_recalc_vertical(void)
-+{
-+ unsigned int font_size, rows;
-+ u16 crtc;
-+ u8 ov;
-+
-+ set_fs(0);
-+ font_size = rdfs8(0x485); /* BIOS: font size (pixels) */
-+ rows = force_y ? force_y : rdfs8(0x484)+1; /* Text rows */
-+
-+ rows *= font_size; /* Visible scan lines */
-+ rows--; /* ... minus one */
-+
-+ crtc = vga_crtc();
-+
-+ out_idx((u8)rows, crtc, 0x12); /* Lower height register */
-+ ov = in_idx(crtc, 0x07); /* Overflow register */
-+ ov &= 0xbd;
-+ ov |= (rows >> (8-1)) & 0x02;
-+ ov |= (rows >> (9-6)) & 0x40;
-+ out_idx(ov, crtc, 0x07);
-+}
-+
-+/* Set mode (with recalc if specified) */
-+static int set_mode(u16 mode)
-+{
-+ int rv;
-+
-+ /* Very special mode numbers... */
-+ if (mode == VIDEO_CURRENT_MODE)
-+ return 0; /* Nothing to do... */
-+ else if (mode == NORMAL_VGA)
-+ mode = VIDEO_80x25;
-+ else if (mode == EXTENDED_VGA)
-+ mode = VIDEO_8POINT;
-+
-+ rv = raw_set_mode(mode);
-+ if (rv)
-+ return rv;
-+
-+ if (mode & VIDEO_RECALC)
-+ vga_recalc_vertical();
-+
-+ return 0;
-+}
-+
-+static unsigned int get_entry(void)
-+{
-+ char entry_buf[4];
-+ int i, len = 0;
-+ int key;
-+ unsigned int v;
-+
-+ do {
-+ key = getchar();
-+
-+ if (key == '\b') {
-+ if (len > 0) {
-+ puts("\b \b");
-+ len--;
-+ }
-+ } else if ((key >= '0' && key <= '9') ||
-+ (key >= 'A' && key <= 'Z') ||
-+ (key >= 'a' && key <= 'z')) {
-+ if (len < sizeof entry_buf) {
-+ entry_buf[len++] = key;
-+ putchar(key);
-+ }
-+ }
-+ } while (key != '\r');
-+ putchar('\n');
-+
-+ if (len == 0)
-+ return VIDEO_CURRENT_MODE; /* Default */
-+
-+ v = 0;
-+ for (i = 0; i < len; i++) {
-+ v <<= 4;
-+ key = entry_buf[i] | 0x20;
-+ v += (key > '9') ? key-'a'+10 : key-'0';
-+ }
-+
-+ return v;
-+}
-+
-+static void display_menu(void)
-+{
-+ struct card_info *card;
-+ struct mode_info *mi;
-+ char ch;
-+ int i;
-+
-+ puts("Mode: COLSxROWS:\n");
-+
-+ ch = '0';
-+ for (card = video_cards; card < video_cards_end; card++) {
-+ mi = card->modes;
-+ for (i = 0; i < card->nmodes; i++, mi++) {
-+ int visible = mi->x && mi->y;
-+ u16 mode_id = mi->mode ? mi->mode :
-+ (mi->y << 8)+mi->x;
-+
-+ if (!visible)
-+ continue; /* Hidden mode */
-+
-+ printf("%c %04X %3dx%-3d %s\n",
-+ ch, mode_id, mi->x, mi->y, card->card_name);
-+
-+ if (ch == '9')
-+ ch = 'a';
-+ else if (ch == 'z' || ch == ' ')
-+ ch = ' '; /* Out of keys... */
-+ else
-+ ch++;
-+ }
-+ }
-+}
-+
-+#define H(x) ((x)-'a'+10)
-+#define SCAN ((H('s')<<12)+(H('c')<<8)+(H('a')<<4)+H('n'))
-+
-+static unsigned int mode_menu(void)
-+{
-+ int key;
-+ unsigned int sel;
-+
-+ puts("Press <ENTER> to see video modes available, "
-+ "<SPACE> to continue, or wait 30 sec\n");
-+
-+ kbd_flush();
-+ while (1) {
-+ key = getchar_timeout();
-+ if (key == ' ' || key == 0)
-+ return VIDEO_CURRENT_MODE; /* Default */
-+ if (key == '\r')
-+ break;
-+ putchar('\a'); /* Beep! */
-+ }
-+
-+
-+ for (;;) {
-+ display_menu();
-+
-+ puts("Enter a video mode or \"scan\" to scan for "
-+ "additional modes: ");
-+ sel = get_entry();
-+ if (sel != SCAN)
-+ return sel;
-+
-+ probe_cards(1);
-+ }
-+}
-+
-+#ifdef CONFIG_VIDEO_RETAIN
-+/* Save screen content to the heap */
-+struct saved_screen {
-+ int x, y;
-+ int curx, cury;
-+ u16 *data;
-+} saved;
-+
-+static void save_screen(void)
-+{
-+ /* Should be called after store_mode_params() */
-+ saved.x = boot_params.screen_info.orig_video_cols;
-+ saved.y = boot_params.screen_info.orig_video_lines;
-+ saved.curx = boot_params.screen_info.orig_x;
-+ saved.cury = boot_params.screen_info.orig_y;
-+
-+ if (heap_free() < saved.x*saved.y*sizeof(u16)+512)
-+ return; /* Not enough heap to save the screen */
-+
-+ saved.data = GET_HEAP(u16, saved.x*saved.y);
-+
-+ set_fs(video_segment);
-+ copy_from_fs(saved.data, 0, saved.x*saved.y*sizeof(u16));
-+}
-+
-+static void restore_screen(void)
-+{
-+ /* Should be called after store_mode_params() */
-+ int xs = boot_params.screen_info.orig_video_cols;
-+ int ys = boot_params.screen_info.orig_video_lines;
-+ int y;
-+ addr_t dst = 0;
-+ u16 *src = saved.data;
-+ u16 ax, bx, dx;
-+
-+ if (graphic_mode)
-+ return; /* Can't restore onto a graphic mode */
-+
-+ if (!src)
-+ return; /* No saved screen contents */
-+
-+ /* Restore screen contents */
-+
-+ set_fs(video_segment);
-+ for (y = 0; y < ys; y++) {
-+ int npad;
-+
-+ if (y < saved.y) {
-+ int copy = (xs < saved.x) ? xs : saved.x;
-+ copy_to_fs(dst, src, copy*sizeof(u16));
-+ dst += copy*sizeof(u16);
-+ src += saved.x;
-+ npad = (xs < saved.x) ? 0 : xs-saved.x;
-+ } else {
-+ npad = xs;
-+ }
-+
-+ /* Writes "npad" blank characters to
-+ video_segment:dst and advances dst */
-+ asm volatile("pushw %%es ; "
-+ "movw %2,%%es ; "
-+ "shrw %%cx ; "
-+ "jnc 1f ; "
-+ "stosw \n\t"
-+ "1: rep;stosl ; "
-+ "popw %%es"
-+ : "+D" (dst), "+c" (npad)
-+ : "bdSm" (video_segment),
-+ "a" (0x07200720));
-+ }
-+
-+ /* Restore cursor position */
-+ ax = 0x0200; /* Set cursor position */
-+ bx = 0; /* Page number (<< 8) */
-+ dx = (saved.cury << 8)+saved.curx;
-+ asm volatile(INT10
-+ : "+a" (ax), "+b" (bx), "+d" (dx)
-+ : : "ecx", "esi", "edi");
-+}
-+#else
-+#define save_screen() ((void)0)
-+#define restore_screen() ((void)0)
-+#endif
-+
-+void set_video(void)
-+{
-+ u16 mode = boot_params.hdr.vid_mode;
-+
-+ RESET_HEAP();
-+
-+ store_mode_params();
-+ save_screen();
-+ probe_cards(0);
-+
-+ for (;;) {
-+ if (mode == ASK_VGA)
-+ mode = mode_menu();
-+
-+ if (!set_mode(mode))
-+ break;
-+
-+ printf("Undefined video mode number: %x\n", mode);
-+ mode = ASK_VGA;
-+ }
-+ vesa_store_edid();
-+ store_mode_params();
-+
-+ if (do_restore)
-+ restore_screen();
-+}
-diff -puN /dev/null arch/i386/boot/video.h
---- /dev/null
-+++ a/arch/i386/boot/video.h
-@@ -0,0 +1,145 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/video.h
-+ *
-+ * Header file for the real-mode video probing code
-+ */
-+
-+#ifndef BOOT_VIDEO_H
-+#define BOOT_VIDEO_H
-+
-+#include <linux/types.h>
-+
-+/* Enable autodetection of SVGA adapters and modes. */
-+#undef CONFIG_VIDEO_SVGA
-+
-+/* Enable autodetection of VESA modes */
-+#define CONFIG_VIDEO_VESA
-+
-+/* Retain screen contents when switching modes */
-+#define CONFIG_VIDEO_RETAIN
-+
-+/* Force 400 scan lines for standard modes (hack to fix bad BIOS behaviour */
-+#undef CONFIG_VIDEO_400_HACK
-+
-+/* This code uses an extended set of video mode numbers. These include:
-+ * Aliases for standard modes
-+ * NORMAL_VGA (-1)
-+ * EXTENDED_VGA (-2)
-+ * ASK_VGA (-3)
-+ * Video modes numbered by menu position -- NOT RECOMMENDED because of lack
-+ * of compatibility when extending the table. These are between 0x00 and 0xff.
-+ */
-+#define VIDEO_FIRST_MENU 0x0000
-+
-+/* Standard BIOS video modes (BIOS number + 0x0100) */
-+#define VIDEO_FIRST_BIOS 0x0100
-+
-+/* VESA BIOS video modes (VESA number + 0x0200) */
-+#define VIDEO_FIRST_VESA 0x0200
-+
-+/* Video7 special modes (BIOS number + 0x0900) */
-+#define VIDEO_FIRST_V7 0x0900
-+
-+/* Special video modes */
-+#define VIDEO_FIRST_SPECIAL 0x0f00
-+#define VIDEO_80x25 0x0f00
-+#define VIDEO_8POINT 0x0f01
-+#define VIDEO_80x43 0x0f02
-+#define VIDEO_80x28 0x0f03
-+#define VIDEO_CURRENT_MODE 0x0f04
-+#define VIDEO_80x30 0x0f05
-+#define VIDEO_80x34 0x0f06
-+#define VIDEO_80x60 0x0f07
-+#define VIDEO_GFX_HACK 0x0f08
-+#define VIDEO_LAST_SPECIAL 0x0f09
-+
-+/* Video modes given by resolution */
-+#define VIDEO_FIRST_RESOLUTION 0x1000
-+
-+/* The "recalculate timings" flag */
-+#define VIDEO_RECALC 0x8000
-+
-+/* Define DO_STORE according to CONFIG_VIDEO_RETAIN */
-+#ifdef CONFIG_VIDEO_RETAIN
-+void store_screen(void);
-+#define DO_STORE() store_screen()
-+#else
-+#define DO_STORE() ((void)0)
-+#endif /* CONFIG_VIDEO_RETAIN */
-+
-+/*
-+ * Mode table structures
-+ */
-+
-+struct mode_info {
-+ u16 mode; /* Mode number (vga= style) */
-+ u8 x, y; /* Width, height */
-+};
-+
-+struct card_info {
-+ const char *card_name;
-+ int (*set_mode)(struct mode_info *mode);
-+ int (*probe)(void);
-+ struct mode_info *modes;
-+ int nmodes; /* Number of probed modes so far */
-+ int unsafe; /* Probing is unsafe, only do after "scan" */
-+ u16 xmode_first; /* Unprobed modes to try to call anyway */
-+ u16 xmode_n; /* Size of unprobed mode range */
-+};
-+
-+#define __videocard struct card_info __attribute__((section(".videocards")))
-+extern struct card_info video_cards[], video_cards_end[];
-+
-+int mode_defined(u16 mode); /* video.c */
-+
-+/* Basic video information */
-+#define ADAPTER_CGA 0 /* CGA/MDA/HGC */
-+#define ADAPTER_EGA 1
-+#define ADAPTER_VGA 2
-+
-+extern int adapter;
-+extern u16 video_segment;
-+extern int force_x, force_y; /* Don't query the BIOS for cols/rows */
-+extern int do_restore; /* Restore screen contents */
-+extern int graphic_mode; /* Graphics mode with linear frame buffer */
-+
-+/*
-+ * int $0x10 is notorious for touching registers it shouldn't.
-+ * gcc doesn't like %ebp being clobbered, so define it as a push/pop
-+ * sequence here.
-+ */
-+#define INT10 "pushl %%ebp; int $0x10; popl %%ebp"
-+
-+/* Accessing VGA indexed registers */
-+static inline u8 in_idx(u16 port, u8 index)
-+{
-+ outb(index, port);
-+ return inb(port+1);
-+}
-+
-+static inline void out_idx(u8 v, u16 port, u8 index)
-+{
-+ outw(index+(v << 8), port);
-+}
-+
-+/* Writes a value to an indexed port and then reads the port again */
-+static inline u8 tst_idx(u8 v, u16 port, u8 index)
-+{
-+ out_idx(port, index, v);
-+ return in_idx(port, index);
-+}
-+
-+/* Get the I/O port of the VGA CRTC */
-+u16 vga_crtc(void); /* video-vga.c */
-+
-+#endif /* BOOT_VIDEO_H */
-diff -puN /dev/null arch/i386/boot/voyager.c
---- /dev/null
-+++ a/arch/i386/boot/voyager.c
-@@ -0,0 +1,46 @@
-+/* -*- linux-c -*- ------------------------------------------------------- *
-+ *
-+ * Copyright (C) 1991, 1992 Linus Torvalds
-+ * Copyright 2007 rPath, Inc. - All Rights Reserved
-+ *
-+ * This file is part of the Linux kernel, and is made available under
-+ * the terms of the GNU General Public License version 2.
-+ *
-+ * ----------------------------------------------------------------------- */
-+
-+/*
-+ * arch/i386/boot/voyager.c
-+ *
-+ * Get the Voyager config information
-+ */
-+
-+#include "boot.h"
-+
-+#ifdef CONFIG_X86_VOYAGER
-+
-+int query_voyager(void)
-+{
-+ u8 err;
-+ u16 es, di;
-+ /* Abuse the apm_bios_info area for this */
-+ u8 *data_ptr = (u8 *)&boot_params.apm_bios_info;
-+
-+ data_ptr[0] = 0xff; /* Flag on config not found(?) */
-+
-+ asm("pushw %%es ; "
-+ "int $0x15 ; "
-+ "setc %0 ; "
-+ "movw %%es, %1 ; "
-+ "popw %%es"
-+ : "=qm" (err), "=rm" (es), "=D" (di)
-+ : "a" (0xffc0));
-+
-+ if (err)
-+ return -1; /* Not Voyager */
-+
-+ set_fs(es);
-+ copy_from_fs(data_ptr, di, 7); /* Table is 7 bytes apparently */
-+ return 0;
-+}
-+
-+#endif /* CONFIG_X86_VOYAGER */
-diff -puN arch/i386/kernel/cpu/Makefile~git-newsetup arch/i386/kernel/cpu/Makefile
-diff -puN /dev/null arch/i386/kernel/cpu/addon_cpuid_features.c
---- /dev/null
-+++ a/arch/i386/kernel/cpu/addon_cpuid_features.c
-@@ -0,0 +1,50 @@
-+
-+/*
-+ * Routines to indentify additional cpu features that are scattered in
-+ * cpuid space.
-+ */
-+
-+#include <linux/cpu.h>
-+
-+#include <asm/processor.h>
-+
-+struct cpuid_bit {
-+ u16 feature;
-+ u8 reg;
-+ u8 bit;
-+ u32 level;
-+};
-+
-+enum cpuid_regs {
-+ CR_EAX = 0,
-+ CR_ECX,
-+ CR_EDX,
-+ CR_EBX
-+};
-+
-+void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
-+{
-+ u32 max_level;
-+ u32 regs[4];
-+ const struct cpuid_bit *cb;
-+
-+ static const struct cpuid_bit cpuid_bits[] = {
-+ { X86_FEATURE_IDA, CR_EAX, 1, 0x00000006 },
-+ { 0, 0, 0, 0 }
-+ };
-+
-+ for (cb = cpuid_bits; cb->feature; cb++) {
-+
-+ /* Verify that the level is valid */
-+ max_level = cpuid_eax(cb->level & 0xffff0000);
-+ if (max_level < cb->level ||
-+ max_level > (cb->level | 0xffff))
-+ continue;
-+
-+ cpuid(cb->level, ®s[CR_EAX], ®s[CR_EBX],
-+ ®s[CR_ECX], ®s[CR_EDX]);
-+
-+ if (regs[cb->reg] & (1 << cb->bit))
-+ set_bit(cb->feature, c->x86_capability);
-+ }
-+}
-diff -puN arch/i386/kernel/cpu/common.c~git-newsetup arch/i386/kernel/cpu/common.c
---- a/arch/i386/kernel/cpu/common.c~git-newsetup
-+++ a/arch/i386/kernel/cpu/common.c
-@@ -353,6 +353,8 @@ static void __cpuinit generic_identify(s
- if ( xlvl >= 0x80000004 )
- get_model_name(c); /* Default name */
- }
-+
-+ init_scattered_cpuid_features(c);
- }
-
- early_intel_workaround(c);
-diff -puN arch/i386/kernel/cpu/proc.c~git-newsetup arch/i386/kernel/cpu/proc.c
---- a/arch/i386/kernel/cpu/proc.c~git-newsetup
-+++ a/arch/i386/kernel/cpu/proc.c
-@@ -29,7 +29,8 @@ static int show_cpuinfo(struct seq_file
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, "mp", "nx", NULL, "mmxext", NULL,
-- NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm", "3dnowext", "3dnow",
-+ NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm",
-+ "3dnowext", "3dnow",
-
- /* Transmeta-defined */
- "recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
-@@ -40,8 +41,9 @@ static int show_cpuinfo(struct seq_file
- /* Other (Linux-defined) */
- "cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
- NULL, NULL, NULL, NULL,
-- "constant_tsc", "up", NULL, NULL, NULL, NULL, NULL, NULL,
-- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-+ "constant_tsc", "up", NULL, "arch_perfmon",
-+ "pebs", "bts", NULL, "sync_rdtsc",
-+ "rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* Intel-defined (#2) */
-@@ -57,9 +59,16 @@ static int show_cpuinfo(struct seq_file
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* AMD-defined (#2) */
-- "lahf_lm", "cmp_legacy", "svm", "extapic", "cr8legacy", "abm",
-- "sse4a", "misalignsse",
-- "3dnowprefetch", "osvw", "ibs", NULL, NULL, NULL, NULL, NULL,
-+ "lahf_lm", "cmp_legacy", "svm", "extapic", "cr8_legacy",
-+ "altmovcr8", "abm", "sse4a",
-+ "misalignsse", "3dnowprefetch",
-+ "osvw", "ibs", NULL, NULL, NULL, NULL,
-+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-+
-+ /* Auxiliary (Linux-defined) */
-+ "ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- };
-diff -puN arch/i386/kernel/e820.c~git-newsetup arch/i386/kernel/e820.c
---- a/arch/i386/kernel/e820.c~git-newsetup
-+++ a/arch/i386/kernel/e820.c
-@@ -766,7 +766,7 @@ void __init print_memory_map(char *who)
- case E820_NVS:
- printk("(ACPI NVS)\n");
- break;
-- default: printk("type %lu\n", e820.map[i].type);
-+ default: printk("type %u\n", e820.map[i].type);
- break;
- }
- }
-diff -puN arch/i386/kernel/setup.c~git-newsetup arch/i386/kernel/setup.c
---- a/arch/i386/kernel/setup.c~git-newsetup
-+++ a/arch/i386/kernel/setup.c
-@@ -102,19 +102,10 @@ static unsigned int highmem_pages = -1;
- /*
- * Setup options
- */
--struct drive_info_struct { char dummy[32]; } drive_info;
--#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) || \
-- defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE)
--EXPORT_SYMBOL(drive_info);
--#endif
- struct screen_info screen_info;
- EXPORT_SYMBOL(screen_info);
- struct apm_info apm_info;
- EXPORT_SYMBOL(apm_info);
--struct sys_desc_table_struct {
-- unsigned short length;
-- unsigned char table[0];
--};
- struct edid_info edid_info;
- EXPORT_SYMBOL_GPL(edid_info);
- struct ist_info ist_info;
-@@ -134,7 +125,7 @@ unsigned long saved_videomode;
-
- static char __initdata command_line[COMMAND_LINE_SIZE];
-
--unsigned char __initdata boot_params[PARAM_SIZE];
-+struct boot_params __initdata boot_params;
-
- #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
- struct edd edd;
-@@ -528,7 +519,6 @@ void __init setup_arch(char **cmdline_p)
- #endif
-
- ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
-- drive_info = DRIVE_INFO;
- screen_info = SCREEN_INFO;
- edid_info = EDID_INFO;
- apm_info.bios = APM_BIOS_INFO;
-diff -puN arch/i386/kernel/verify_cpu.S~git-newsetup /dev/null
---- a/arch/i386/kernel/verify_cpu.S
-+++ /dev/null
-@@ -1,94 +0,0 @@
--/* Check if CPU has some minimum CPUID bits
-- This runs in 16bit mode so that the caller can still use the BIOS
-- to output errors on the screen */
--#include <asm/cpufeature.h>
--#include <asm/msr.h>
--
--verify_cpu:
-- pushfl # Save caller passed flags
-- pushl $0 # Kill any dangerous flags
-- popfl
--
--#if CONFIG_X86_MINIMUM_CPU_MODEL >= 4
-- pushfl
-- pop %eax
-- orl $(1<<18),%eax # try setting AC
-- push %eax
-- popfl
-- pushfl
-- popl %eax
-- testl $(1<<18),%eax
-- jz bad
--#endif
--#if REQUIRED_MASK1 != 0
-- pushfl # standard way to check for cpuid
-- popl %eax
-- movl %eax,%ebx
-- xorl $0x200000,%eax
-- pushl %eax
-- popfl
-- pushfl
-- popl %eax
-- cmpl %eax,%ebx
-- pushfl # standard way to check for cpuid
-- popl %eax
-- movl %eax,%ebx
-- xorl $0x200000,%eax
-- pushl %eax
-- popfl
-- pushfl
-- popl %eax
-- cmpl %eax,%ebx
-- jz bad # REQUIRED_MASK1 != 0 requires CPUID
--
-- movl $0x0,%eax # See if cpuid 1 is implemented
-- cpuid
-- cmpl $0x1,%eax
-- jb bad # no cpuid 1
--
--#if REQUIRED_MASK1 & NEED_CMPXCHG64
-- /* Some VIA C3s need magic MSRs to enable CX64. Do this here */
-- cmpl $0x746e6543,%ebx # Cent
-- jne 1f
-- cmpl $0x48727561,%edx # aurH
-- jne 1f
-- cmpl $0x736c7561,%ecx # auls
-- jne 1f
-- movl $1,%eax # check model
-- cpuid
-- movl %eax,%ebx
-- shr $8,%ebx
-- andl $0xf,%ebx
-- cmp $6,%ebx # check family == 6
-- jne 1f
-- shr $4,%eax
-- andl $0xf,%eax
-- cmpl $6,%eax # check model >= 6
-- jb 1f
-- # assume models >= 6 all support this MSR
-- movl $MSR_VIA_FCR,%ecx
-- rdmsr
-- orl $((1<<1)|(1<<7)),%eax # enable CMPXCHG64 and PGE
-- wrmsr
--1:
--#endif
-- movl $0x1,%eax # Does the cpu have what it takes
-- cpuid
--
--#if CONFIG_X86_MINIMUM_CPU_MODEL > 4
--#error add proper model checking here
--#endif
--
-- andl $REQUIRED_MASK1,%edx
-- xorl $REQUIRED_MASK1,%edx
-- jnz bad
--#endif /* REQUIRED_MASK1 */
--
-- popfl
-- xor %eax,%eax
-- ret
--
--bad:
-- popfl
-- movl $1,%eax
-- ret
-diff -puN arch/x86_64/Kconfig~git-newsetup arch/x86_64/Kconfig
---- a/arch/x86_64/Kconfig~git-newsetup
-+++ a/arch/x86_64/Kconfig
-@@ -453,6 +453,10 @@ config NR_CPUS
- This is purely to save memory - each supported CPU requires
- memory in the static kernel configuration.
-
-+config PHYSICAL_ALIGN
-+ hex
-+ default "0x200000"
-+
- config HOTPLUG_CPU
- bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)"
- depends on SMP && HOTPLUG && EXPERIMENTAL
-diff -puN arch/x86_64/boot/Makefile~git-newsetup arch/x86_64/boot/Makefile
---- a/arch/x86_64/boot/Makefile~git-newsetup
-+++ a/arch/x86_64/boot/Makefile
-@@ -1,135 +1,9 @@
- #
- # arch/x86_64/boot/Makefile
- #
--# This file is subject to the terms and conditions of the GNU General Public
--# License. See the file "COPYING" in the main directory of this archive
--# for more details.
--#
--# Copyright (C) 1994 by Linus Torvalds
--#
--
--# ROOT_DEV specifies the default root-device when making the image.
--# This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
--# the default of FLOPPY is used by 'build'.
--
--ROOT_DEV := CURRENT
--
--# If you want to preset the SVGA mode, uncomment the next line and
--# set SVGA_MODE to whatever number you want.
--# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
--# The number is the same as you would ordinarily press at bootup.
--
--SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
--
--# If you want the RAM disk device, define this to be the size in blocks.
--
--#RAMDISK := -DRAMDISK=512
--
--targets := vmlinux.bin bootsect bootsect.o \
-- setup setup.o bzImage mtools.conf
--
--EXTRA_CFLAGS := -m32
--
--hostprogs-y := tools/build
--HOST_EXTRACFLAGS += $(LINUXINCLUDE)
--subdir- := compressed/ #Let make clean descend in compressed/
--# ---------------------------------------------------------------------------
--
--$(obj)/bzImage: IMAGE_OFFSET := 0x100000
--$(obj)/bzImage: EXTRA_AFLAGS := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__
--$(obj)/bzImage: BUILDFLAGS := -b
--
--quiet_cmd_image = BUILD $@
--cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/bootsect $(obj)/setup \
-- $(obj)/vmlinux.bin $(ROOT_DEV) > $@
--
--$(obj)/bzImage: $(obj)/bootsect $(obj)/setup \
-- $(obj)/vmlinux.bin $(obj)/tools/build FORCE
-- $(call if_changed,image)
-- @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
--
--$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
-- $(call if_changed,objcopy)
--
--LDFLAGS_bootsect := -Ttext 0x0 -s --oformat binary
--LDFLAGS_setup := -Ttext 0x0 -s --oformat binary -e begtext
--
--$(obj)/setup $(obj)/bootsect: %: %.o FORCE
-- $(call if_changed,ld)
--
--$(obj)/compressed/vmlinux: FORCE
-- $(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
--
--# Set this if you want to pass append arguments to the zdisk/fdimage/isoimage kernel
--FDARGS =
--# Set this if you want an initrd included with the zdisk/fdimage/isoimage kernel
--FDINITRD =
--
--image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
--
--$(obj)/mtools.conf: $(src)/mtools.conf.in
-- sed -e 's|@OBJ@|$(obj)|g' < $< > $@
--
--# This requires write access to /dev/fd0
--zdisk: $(BOOTIMAGE) $(obj)/mtools.conf
-- MTOOLSRC=$(obj)/mtools.conf mformat a: ; sync
-- syslinux /dev/fd0 ; sync
-- echo '$(image_cmdline)' | \
-- MTOOLSRC=$(obj)/mtools.conf mcopy - a:syslinux.cfg
-- if [ -f '$(FDINITRD)' ] ; then \
-- MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
-- fi
-- MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) a:linux ; sync
--
--# These require being root or having syslinux 2.02 or higher installed
--fdimage fdimage144: $(BOOTIMAGE) $(obj)/mtools.conf
-- dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
-- MTOOLSRC=$(obj)/mtools.conf mformat v: ; sync
-- syslinux $(obj)/fdimage ; sync
-- echo '$(image_cmdline)' | \
-- MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
-- if [ -f '$(FDINITRD)' ] ; then \
-- MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
-- fi
-- MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) v:linux ; sync
--
--fdimage288: $(BOOTIMAGE) $(obj)/mtools.conf
-- dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
-- MTOOLSRC=$(obj)/mtools.conf mformat w: ; sync
-- syslinux $(obj)/fdimage ; sync
-- echo '$(image_cmdline)' | \
-- MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
-- if [ -f '$(FDINITRD)' ] ; then \
-- MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
-- fi
-- MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) w:linux ; sync
--
--isoimage: $(BOOTIMAGE)
-- -rm -rf $(obj)/isoimage
-- mkdir $(obj)/isoimage
-- for i in lib lib64 share end ; do \
-- if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
-- cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
-- break ; \
-- fi ; \
-- if [ $$i = end ] ; then exit 1 ; fi ; \
-- done
-- cp $(BOOTIMAGE) $(obj)/isoimage/linux
-- echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
-- if [ -f '$(FDINITRD)' ] ; then \
-- cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
-- fi
-- mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
-- -no-emul-boot -boot-load-size 4 -boot-info-table \
-- $(obj)/isoimage
-- rm -rf $(obj)/isoimage
--
--zlilo: $(BOOTIMAGE)
-- if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
-- if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
-- cat $(BOOTIMAGE) > $(INSTALL_PATH)/vmlinuz
-- cp System.map $(INSTALL_PATH)/
-- if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
-+# The actual boot code is shared with i386 including the Makefile.
-+# So tell kbuild that we fetch the code from i386 and include the
-+# Makefile from i386 too.
-
--install:
-- sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"
-+src := arch/i386/boot
-+include $(src)/Makefile
-diff -puN arch/x86_64/boot/bootsect.S~git-newsetup /dev/null
---- a/arch/x86_64/boot/bootsect.S
-+++ /dev/null
-@@ -1,98 +0,0 @@
--/*
-- * bootsect.S Copyright (C) 1991, 1992 Linus Torvalds
-- *
-- * modified by Drew Eckhardt
-- * modified by Bruce Evans (bde)
-- * modified by Chris Noe (May 1999) (as86 -> gas)
-- * gutted by H. Peter Anvin (Jan 2003)
-- *
-- * BIG FAT NOTE: We're in real mode using 64k segments. Therefore segment
-- * addresses must be multiplied by 16 to obtain their respective linear
-- * addresses. To avoid confusion, linear addresses are written using leading
-- * hex while segment addresses are written as segment:offset.
-- *
-- */
--
--#include <asm/boot.h>
--
--SETUPSECTS = 4 /* default nr of setup-sectors */
--BOOTSEG = 0x07C0 /* original address of boot-sector */
--INITSEG = DEF_INITSEG /* we move boot here - out of the way */
--SETUPSEG = DEF_SETUPSEG /* setup starts here */
--SYSSEG = DEF_SYSSEG /* system loaded at 0x10000 (65536) */
--SYSSIZE = DEF_SYSSIZE /* system size: # of 16-byte clicks */
-- /* to be loaded */
--ROOT_DEV = 0 /* ROOT_DEV is now written by "build" */
--SWAP_DEV = 0 /* SWAP_DEV is now written by "build" */
--
--#ifndef SVGA_MODE
--#define SVGA_MODE ASK_VGA
--#endif
--
--#ifndef RAMDISK
--#define RAMDISK 0
--#endif
--
--#ifndef ROOT_RDONLY
--#define ROOT_RDONLY 1
--#endif
--
--.code16
--.text
--
--.global _start
--_start:
--
-- # Normalize the start address
-- jmpl $BOOTSEG, $start2
--
--start2:
-- movw %cs, %ax
-- movw %ax, %ds
-- movw %ax, %es
-- movw %ax, %ss
-- movw $0x7c00, %sp
-- sti
-- cld
--
-- movw $bugger_off_msg, %si
--
--msg_loop:
-- lodsb
-- andb %al, %al
-- jz die
-- movb $0xe, %ah
-- movw $7, %bx
-- int $0x10
-- jmp msg_loop
--
--die:
-- # Allow the user to press a key, then reboot
-- xorw %ax, %ax
-- int $0x16
-- int $0x19
--
-- # int 0x19 should never return. In case it does anyway,
-- # invoke the BIOS reset code...
-- ljmp $0xf000,$0xfff0
--
--
--bugger_off_msg:
-- .ascii "Direct booting from floppy is no longer supported.\r\n"
-- .ascii "Please use a boot loader program instead.\r\n"
-- .ascii "\n"
-- .ascii "Remove disk and press any key to reboot . . .\r\n"
-- .byte 0
--
--
-- # Kernel attributes; used by setup
--
-- .org 497
--setup_sects: .byte SETUPSECTS
--root_flags: .word ROOT_RDONLY
--syssize: .word SYSSIZE
--swap_dev: .word SWAP_DEV
--ram_size: .word RAMDISK
--vid_mode: .word SVGA_MODE
--root_dev: .word ROOT_DEV
--boot_flag: .word 0xAA55
-diff -puN arch/x86_64/boot/compressed/Makefile~git-newsetup arch/x86_64/boot/compressed/Makefile
---- a/arch/x86_64/boot/compressed/Makefile~git-newsetup
-+++ a/arch/x86_64/boot/compressed/Makefile
-@@ -7,11 +7,12 @@
- #
-
- targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o
--EXTRA_AFLAGS := -traditional
-
--# cannot use EXTRA_CFLAGS because base CFLAGS contains -mkernel which conflicts with
--# -m32
--CFLAGS := -m64 -D__KERNEL__ -Iinclude -O2 -fno-strict-aliasing -fPIC -mcmodel=small -fno-builtin
-+CFLAGS := -m64 -D__KERNEL__ $(LINUXINCLUDE) -O2 \
-+ -fno-strict-aliasing -fPIC -mcmodel=small \
-+ $(call cc-option, -ffreestanding) \
-+ $(call cc-option, -fno-stack-protector)
-+AFLAGS := $(CFLAGS) -D__ASSEMBLY__
- LDFLAGS := -m elf_x86_64
-
- LDFLAGS_vmlinux := -T
-diff -puN arch/x86_64/boot/compressed/head.S~git-newsetup arch/x86_64/boot/compressed/head.S
---- a/arch/x86_64/boot/compressed/head.S~git-newsetup
-+++ a/arch/x86_64/boot/compressed/head.S
-@@ -46,10 +46,10 @@ startup_32:
- * at and where we were actually loaded at. This can only be done
- * with a short local call on x86. Nothing else will tell us what
- * address we are running at. The reserved chunk of the real-mode
-- * data at 0x34-0x3f are used as the stack for this calculation.
-- * Only 4 bytes are needed.
-+ * data at 0x1e4 (defined as a scratch field) are used as the stack
-+ * for this calculation. Only 4 bytes are needed.
- */
-- leal 0x40(%esi), %esp
-+ leal (0x1e4+4)(%esi), %esp
- call 1f
- 1: popl %ebp
- subl $1b, %ebp
-diff -puN arch/x86_64/boot/install.sh~git-newsetup /dev/null
---- a/arch/x86_64/boot/install.sh
-+++ /dev/null
-@@ -1,2 +0,0 @@
--#!/bin/sh
--. $srctree/arch/i386/boot/install.sh
-diff -puN arch/x86_64/boot/mtools.conf.in~git-newsetup /dev/null
---- a/arch/x86_64/boot/mtools.conf.in
-+++ /dev/null
-@@ -1,17 +0,0 @@
--#
--# mtools configuration file for "make (b)zdisk"
--#
--
--# Actual floppy drive
--drive a:
-- file="/dev/fd0"
--
--# 1.44 MB floppy disk image
--drive v:
-- file="@OBJ@/fdimage" cylinders=80 heads=2 sectors=18 filter
--
--# 2.88 MB floppy disk image (mostly for virtual uses)
--drive w:
-- file="@OBJ@/fdimage" cylinders=80 heads=2 sectors=36 filter
--
--
-diff -puN arch/x86_64/boot/setup.S~git-newsetup /dev/null
---- a/arch/x86_64/boot/setup.S
-+++ /dev/null
-@@ -1,826 +0,0 @@
--/*
-- * setup.S Copyright (C) 1991, 1992 Linus Torvalds
-- *
-- * setup.s is responsible for getting the system data from the BIOS,
-- * and putting them into the appropriate places in system memory.
-- * both setup.s and system has been loaded by the bootblock.
-- *
-- * This code asks the bios for memory/disk/other parameters, and
-- * puts them in a "safe" place: 0x90000-0x901FF, ie where the
-- * boot-block used to be. It is then up to the protected mode
-- * system to read them from there before the area is overwritten
-- * for buffer-blocks.
-- *
-- * Move PS/2 aux init code to psaux.c
-- * (troyer@saifr00.cfsat.Honeywell.COM) 03Oct92
-- *
-- * some changes and additional features by Christoph Niemann,
-- * March 1993/June 1994 (Christoph.Niemann@linux.org)
-- *
-- * add APM BIOS checking by Stephen Rothwell, May 1994
-- * (sfr@canb.auug.org.au)
-- *
-- * High load stuff, initrd support and position independency
-- * by Hans Lermen & Werner Almesberger, February 1996
-- * <lermen@elserv.ffm.fgan.de>, <almesber@lrc.epfl.ch>
-- *
-- * Video handling moved to video.S by Martin Mares, March 1996
-- * <mj@k332.feld.cvut.cz>
-- *
-- * Extended memory detection scheme retwiddled by orc@pell.chi.il.us (david
-- * parsons) to avoid loadlin confusion, July 1997
-- *
-- * Transcribed from Intel (as86) -> AT&T (gas) by Chris Noe, May 1999.
-- * <stiker@northlink.com>
-- *
-- * Fix to work around buggy BIOSes which don't use carry bit correctly
-- * and/or report extended memory in CX/DX for e801h memory size detection
-- * call. As a result the kernel got wrong figures. The int15/e801h docs
-- * from Ralf Brown interrupt list seem to indicate AX/BX should be used
-- * anyway. So to avoid breaking many machines (presumably there was a reason
-- * to orginally use CX/DX instead of AX/BX), we do a kludge to see
-- * if CX/DX have been changed in the e801 call and if so use AX/BX .
-- * Michael Miller, April 2001 <michaelm@mjmm.org>
-- *
-- * Added long mode checking and SSE force. March 2003, Andi Kleen.
-- */
--
--#include <asm/segment.h>
--#include <linux/utsrelease.h>
--#include <linux/compile.h>
--#include <asm/boot.h>
--#include <asm/e820.h>
--#include <asm/page.h>
--#include <asm/setup.h>
--
--/* Signature words to ensure LILO loaded us right */
--#define SIG1 0xAA55
--#define SIG2 0x5A5A
--
--INITSEG = DEF_INITSEG # 0x9000, we move boot here, out of the way
--SYSSEG = DEF_SYSSEG # 0x1000, system loaded at 0x10000 (65536).
--SETUPSEG = DEF_SETUPSEG # 0x9020, this is the current segment
-- # ... and the former contents of CS
--
--DELTA_INITSEG = SETUPSEG - INITSEG # 0x0020
--
--.code16
--.globl begtext, begdata, begbss, endtext, enddata, endbss
--
--.text
--begtext:
--.data
--begdata:
--.bss
--begbss:
--.text
--
--start:
-- jmp trampoline
--
--# This is the setup header, and it must start at %cs:2 (old 0x9020:2)
--
-- .ascii "HdrS" # header signature
-- .word 0x0206 # header version number (>= 0x0105)
-- # or else old loadlin-1.5 will fail)
--realmode_swtch: .word 0, 0 # default_switch, SETUPSEG
--start_sys_seg: .word SYSSEG
-- .word kernel_version # pointing to kernel version string
-- # above section of header is compatible
-- # with loadlin-1.5 (header v1.5). Don't
-- # change it.
--
--type_of_loader: .byte 0 # = 0, old one (LILO, Loadlin,
-- # Bootlin, SYSLX, bootsect...)
-- # See Documentation/i386/boot.txt for
-- # assigned ids
--
--# flags, unused bits must be zero (RFU) bit within loadflags
--loadflags:
--LOADED_HIGH = 1 # If set, the kernel is loaded high
--CAN_USE_HEAP = 0x80 # If set, the loader also has set
-- # heap_end_ptr to tell how much
-- # space behind setup.S can be used for
-- # heap purposes.
-- # Only the loader knows what is free
--#ifndef __BIG_KERNEL__
-- .byte 0
--#else
-- .byte LOADED_HIGH
--#endif
--
--setup_move_size: .word 0x8000 # size to move, when setup is not
-- # loaded at 0x90000. We will move setup
-- # to 0x90000 then just before jumping
-- # into the kernel. However, only the
-- # loader knows how much data behind
-- # us also needs to be loaded.
--
--code32_start: # here loaders can put a different
-- # start address for 32-bit code.
--#ifndef __BIG_KERNEL__
-- .long 0x1000 # 0x1000 = default for zImage
--#else
-- .long 0x100000 # 0x100000 = default for big kernel
--#endif
--
--ramdisk_image: .long 0 # address of loaded ramdisk image
-- # Here the loader puts the 32-bit
-- # address where it loaded the image.
-- # This only will be read by the kernel.
--
--ramdisk_size: .long 0 # its size in bytes
--
--bootsect_kludge:
-- .long 0 # obsolete
--
--heap_end_ptr: .word modelist+1024 # (Header version 0x0201 or later)
-- # space from here (exclusive) down to
-- # end of setup code can be used by setup
-- # for local heap purposes.
--
--pad1: .word 0
--cmd_line_ptr: .long 0 # (Header version 0x0202 or later)
-- # If nonzero, a 32-bit pointer
-- # to the kernel command line.
-- # The command line should be
-- # located between the start of
-- # setup and the end of low
-- # memory (0xa0000), or it may
-- # get overwritten before it
-- # gets read. If this field is
-- # used, there is no longer
-- # anything magical about the
-- # 0x90000 segment; the setup
-- # can be located anywhere in
-- # low memory 0x10000 or higher.
--
--ramdisk_max: .long 0xffffffff
--kernel_alignment: .long 0x200000 # physical addr alignment required for
-- # protected mode relocatable kernel
--#ifdef CONFIG_RELOCATABLE
--relocatable_kernel: .byte 1
--#else
--relocatable_kernel: .byte 0
--#endif
--pad2: .byte 0
--pad3: .word 0
--
--cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line,
-- #added with boot protocol
-- #version 2.06
--
--trampoline: call start_of_setup
-- .align 16
-- # The offset at this point is 0x240
-- .space (0xeff-0x240+1) # E820 & EDD space (ending at 0xeff)
--# End of setup header #####################################################
--
--start_of_setup:
--# Bootlin depends on this being done early
-- movw $0x01500, %ax
-- movb $0x81, %dl
-- int $0x13
--
--#ifdef SAFE_RESET_DISK_CONTROLLER
--# Reset the disk controller.
-- movw $0x0000, %ax
-- movb $0x80, %dl
-- int $0x13
--#endif
--
--# Set %ds = %cs, we know that SETUPSEG = %cs at this point
-- movw %cs, %ax # aka SETUPSEG
-- movw %ax, %ds
--# Check signature at end of setup
-- cmpw $SIG1, setup_sig1
-- jne bad_sig
--
-- cmpw $SIG2, setup_sig2
-- jne bad_sig
--
-- jmp good_sig1
--
--# Routine to print asciiz string at ds:si
--prtstr:
-- lodsb
-- andb %al, %al
-- jz fin
--
-- call prtchr
-- jmp prtstr
--
--fin: ret
--
--# Space printing
--prtsp2: call prtspc # Print double space
--prtspc: movb $0x20, %al # Print single space (note: fall-thru)
--
--prtchr:
-- pushw %ax
-- pushw %cx
-- movw $0007,%bx
-- movw $0x01, %cx
-- movb $0x0e, %ah
-- int $0x10
-- popw %cx
-- popw %ax
-- ret
--
--beep: movb $0x07, %al
-- jmp prtchr
--
--no_sig_mess: .string "No setup signature found ..."
--
--good_sig1:
-- jmp good_sig
--
--# We now have to find the rest of the setup code/data
--bad_sig:
-- movw %cs, %ax # SETUPSEG
-- subw $DELTA_INITSEG, %ax # INITSEG
-- movw %ax, %ds
-- xorb %bh, %bh
-- movb (497), %bl # get setup sect from bootsect
-- subw $4, %bx # LILO loads 4 sectors of setup
-- shlw $8, %bx # convert to words (1sect=2^8 words)
-- movw %bx, %cx
-- shrw $3, %bx # convert to segment
-- addw $SYSSEG, %bx
-- movw %bx, %cs:start_sys_seg
--# Move rest of setup code/data to here
-- movw $2048, %di # four sectors loaded by LILO
-- subw %si, %si
-- movw %cs, %ax # aka SETUPSEG
-- movw %ax, %es
-- movw $SYSSEG, %ax
-- movw %ax, %ds
-- rep
-- movsw
-- movw %cs, %ax # aka SETUPSEG
-- movw %ax, %ds
-- cmpw $SIG1, setup_sig1
-- jne no_sig
--
-- cmpw $SIG2, setup_sig2
-- jne no_sig
--
-- jmp good_sig
--
--no_sig:
-- lea no_sig_mess, %si
-- call prtstr
--
--no_sig_loop:
-- jmp no_sig_loop
--
--good_sig:
-- movw %cs, %ax # aka SETUPSEG
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- movw %ax, %ds
--# Check if an old loader tries to load a big-kernel
-- testb $LOADED_HIGH, %cs:loadflags # Do we have a big kernel?
-- jz loader_ok # No, no danger for old loaders.
--
-- cmpb $0, %cs:type_of_loader # Do we have a loader that
-- # can deal with us?
-- jnz loader_ok # Yes, continue.
--
-- pushw %cs # No, we have an old loader,
-- popw %ds # die.
-- lea loader_panic_mess, %si
-- call prtstr
--
-- jmp no_sig_loop
--
--loader_panic_mess: .string "Wrong loader, giving up..."
--
--loader_ok:
-- /* check for long mode. */
-- /* we have to do this before the VESA setup, otherwise the user
-- can't see the error message. */
--
-- pushw %ds
-- movw %cs,%ax
-- movw %ax,%ds
--
-- call verify_cpu
-- testl %eax,%eax
-- jz sse_ok
--
--no_longmode:
-- call beep
-- lea long_mode_panic,%si
-- call prtstr
--no_longmode_loop:
-- jmp no_longmode_loop
--long_mode_panic:
-- .string "Your CPU does not support long mode. Use a 32bit distribution."
-- .byte 0
--
--#include "../kernel/verify_cpu.S"
--sse_ok:
-- popw %ds
--
--# tell BIOS we want to go to long mode
-- movl $0xec00,%eax # declare target operating mode
-- movl $2,%ebx # long mode
-- int $0x15
--
--# Get memory size (extended mem, kB)
--
-- xorl %eax, %eax
-- movl %eax, (0x1e0)
--#ifndef STANDARD_MEMORY_BIOS_CALL
-- movb %al, (E820NR)
--# Try three different memory detection schemes. First, try
--# e820h, which lets us assemble a memory map, then try e801h,
--# which returns a 32-bit memory size, and finally 88h, which
--# returns 0-64m
--
--# method E820H:
--# the memory map from hell. e820h returns memory classified into
--# a whole bunch of different types, and allows memory holes and
--# everything. We scan through this memory map and build a list
--# of the first 32 memory areas, which we return at [E820MAP].
--# This is documented at http://www.acpi.info/, in the ACPI 2.0 specification.
--
--#define SMAP 0x534d4150
--
--meme820:
-- xorl %ebx, %ebx # continuation counter
-- movw $E820MAP, %di # point into the whitelist
-- # so we can have the bios
-- # directly write into it.
--
--jmpe820:
-- movl $0x0000e820, %eax # e820, upper word zeroed
-- movl $SMAP, %edx # ascii 'SMAP'
-- movl $20, %ecx # size of the e820rec
-- pushw %ds # data record.
-- popw %es
-- int $0x15 # make the call
-- jc bail820 # fall to e801 if it fails
--
-- cmpl $SMAP, %eax # check the return is `SMAP'
-- jne bail820 # fall to e801 if it fails
--
--# cmpl $1, 16(%di) # is this usable memory?
--# jne again820
--
-- # If this is usable memory, we save it by simply advancing %di by
-- # sizeof(e820rec).
-- #
--good820:
-- movb (E820NR), %al # up to 128 entries
-- cmpb $E820MAX, %al
-- jae bail820
--
-- incb (E820NR)
-- movw %di, %ax
-- addw $20, %ax
-- movw %ax, %di
--again820:
-- cmpl $0, %ebx # check to see if
-- jne jmpe820 # %ebx is set to EOF
--bail820:
--
--
--# method E801H:
--# memory size is in 1k chunksizes, to avoid confusing loadlin.
--# we store the 0xe801 memory size in a completely different place,
--# because it will most likely be longer than 16 bits.
--# (use 1e0 because that's what Larry Augustine uses in his
--# alternative new memory detection scheme, and it's sensible
--# to write everything into the same place.)
--
--meme801:
-- stc # fix to work around buggy
-- xorw %cx,%cx # BIOSes which don't clear/set
-- xorw %dx,%dx # carry on pass/error of
-- # e801h memory size call
-- # or merely pass cx,dx though
-- # without changing them.
-- movw $0xe801, %ax
-- int $0x15
-- jc mem88
--
-- cmpw $0x0, %cx # Kludge to handle BIOSes
-- jne e801usecxdx # which report their extended
-- cmpw $0x0, %dx # memory in AX/BX rather than
-- jne e801usecxdx # CX/DX. The spec I have read
-- movw %ax, %cx # seems to indicate AX/BX
-- movw %bx, %dx # are more reasonable anyway...
--
--e801usecxdx:
-- andl $0xffff, %edx # clear sign extend
-- shll $6, %edx # and go from 64k to 1k chunks
-- movl %edx, (0x1e0) # store extended memory size
-- andl $0xffff, %ecx # clear sign extend
-- addl %ecx, (0x1e0) # and add lower memory into
-- # total size.
--
--# Ye Olde Traditional Methode. Returns the memory size (up to 16mb or
--# 64mb, depending on the bios) in ax.
--mem88:
--
--#endif
-- movb $0x88, %ah
-- int $0x15
-- movw %ax, (2)
--
--# Set the keyboard repeat rate to the max
-- movw $0x0305, %ax
-- xorw %bx, %bx
-- int $0x16
--
--# Check for video adapter and its parameters and allow the
--# user to browse video modes.
-- call video # NOTE: we need %ds pointing
-- # to bootsector
--
--# Get hd0 data...
-- xorw %ax, %ax
-- movw %ax, %ds
-- ldsw (4 * 0x41), %si
-- movw %cs, %ax # aka SETUPSEG
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- pushw %ax
-- movw %ax, %es
-- movw $0x0080, %di
-- movw $0x10, %cx
-- pushw %cx
-- cld
-- rep
-- movsb
--# Get hd1 data...
-- xorw %ax, %ax
-- movw %ax, %ds
-- ldsw (4 * 0x46), %si
-- popw %cx
-- popw %es
-- movw $0x0090, %di
-- rep
-- movsb
--# Check that there IS a hd1 :-)
-- movw $0x01500, %ax
-- movb $0x81, %dl
-- int $0x13
-- jc no_disk1
--
-- cmpb $3, %ah
-- je is_disk1
--
--no_disk1:
-- movw %cs, %ax # aka SETUPSEG
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- movw %ax, %es
-- movw $0x0090, %di
-- movw $0x10, %cx
-- xorw %ax, %ax
-- cld
-- rep
-- stosb
--is_disk1:
--
--# Check for PS/2 pointing device
-- movw %cs, %ax # aka SETUPSEG
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- movw %ax, %ds
-- movb $0, (0x1ff) # default is no pointing device
-- int $0x11 # int 0x11: equipment list
-- testb $0x04, %al # check if mouse installed
-- jz no_psmouse
--
-- movb $0xAA, (0x1ff) # device present
--no_psmouse:
--
--#include "../../i386/boot/edd.S"
--
--# Now we want to move to protected mode ...
-- cmpw $0, %cs:realmode_swtch
-- jz rmodeswtch_normal
--
-- lcall *%cs:realmode_swtch
--
-- jmp rmodeswtch_end
--
--rmodeswtch_normal:
-- pushw %cs
-- call default_switch
--
--rmodeswtch_end:
--# we get the code32 start address and modify the below 'jmpi'
--# (loader may have changed it)
-- movl %cs:code32_start, %eax
-- movl %eax, %cs:code32
--
--# Now we move the system to its rightful place ... but we check if we have a
--# big-kernel. In that case we *must* not move it ...
-- testb $LOADED_HIGH, %cs:loadflags
-- jz do_move0 # .. then we have a normal low
-- # loaded zImage
-- # .. or else we have a high
-- # loaded bzImage
-- jmp end_move # ... and we skip moving
--
--do_move0:
-- movw $0x100, %ax # start of destination segment
-- movw %cs, %bp # aka SETUPSEG
-- subw $DELTA_INITSEG, %bp # aka INITSEG
-- movw %cs:start_sys_seg, %bx # start of source segment
-- cld
--do_move:
-- movw %ax, %es # destination segment
-- incb %ah # instead of add ax,#0x100
-- movw %bx, %ds # source segment
-- addw $0x100, %bx
-- subw %di, %di
-- subw %si, %si
-- movw $0x800, %cx
-- rep
-- movsw
-- cmpw %bp, %bx # assume start_sys_seg > 0x200,
-- # so we will perhaps read one
-- # page more than needed, but
-- # never overwrite INITSEG
-- # because destination is a
-- # minimum one page below source
-- jb do_move
--
--end_move:
--# then we load the segment descriptors
-- movw %cs, %ax # aka SETUPSEG
-- movw %ax, %ds
--
--# Check whether we need to be downward compatible with version <=201
-- cmpl $0, cmd_line_ptr
-- jne end_move_self # loader uses version >=202 features
-- cmpb $0x20, type_of_loader
-- je end_move_self # bootsect loader, we know of it
--
--# Boot loader doesnt support boot protocol version 2.02.
--# If we have our code not at 0x90000, we need to move it there now.
--# We also then need to move the params behind it (commandline)
--# Because we would overwrite the code on the current IP, we move
--# it in two steps, jumping high after the first one.
-- movw %cs, %ax
-- cmpw $SETUPSEG, %ax
-- je end_move_self
--
-- cli # make sure we really have
-- # interrupts disabled !
-- # because after this the stack
-- # should not be used
-- subw $DELTA_INITSEG, %ax # aka INITSEG
-- movw %ss, %dx
-- cmpw %ax, %dx
-- jb move_self_1
--
-- addw $INITSEG, %dx
-- subw %ax, %dx # this will go into %ss after
-- # the move
--move_self_1:
-- movw %ax, %ds
-- movw $INITSEG, %ax # real INITSEG
-- movw %ax, %es
-- movw %cs:setup_move_size, %cx
-- std # we have to move up, so we use
-- # direction down because the
-- # areas may overlap
-- movw %cx, %di
-- decw %di
-- movw %di, %si
-- subw $move_self_here+0x200, %cx
-- rep
-- movsb
-- ljmp $SETUPSEG, $move_self_here
--
--move_self_here:
-- movw $move_self_here+0x200, %cx
-- rep
-- movsb
-- movw $SETUPSEG, %ax
-- movw %ax, %ds
-- movw %dx, %ss
--end_move_self: # now we are at the right place
-- lidt idt_48 # load idt with 0,0
-- xorl %eax, %eax # Compute gdt_base
-- movw %ds, %ax # (Convert %ds:gdt to a linear ptr)
-- shll $4, %eax
-- addl $gdt, %eax
-- movl %eax, (gdt_48+2)
-- lgdt gdt_48 # load gdt with whatever is
-- # appropriate
--
--# that was painless, now we enable a20
-- call empty_8042
--
-- movb $0xD1, %al # command write
-- outb %al, $0x64
-- call empty_8042
--
-- movb $0xDF, %al # A20 on
-- outb %al, $0x60
-- call empty_8042
--
--#
--# You must preserve the other bits here. Otherwise embarrasing things
--# like laptops powering off on boot happen. Corrected version by Kira
--# Brown from Linux 2.2
--#
-- inb $0x92, %al #
-- orb $02, %al # "fast A20" version
-- outb %al, $0x92 # some chips have only this
--
--# wait until a20 really *is* enabled; it can take a fair amount of
--# time on certain systems; Toshiba Tecras are known to have this
--# problem. The memory location used here (0x200) is the int 0x80
--# vector, which should be safe to use.
--
-- xorw %ax, %ax # segment 0x0000
-- movw %ax, %fs
-- decw %ax # segment 0xffff (HMA)
-- movw %ax, %gs
--a20_wait:
-- incw %ax # unused memory location <0xfff0
-- movw %ax, %fs:(0x200) # we use the "int 0x80" vector
-- cmpw %gs:(0x210), %ax # and its corresponding HMA addr
-- je a20_wait # loop until no longer aliased
--
--# make sure any possible coprocessor is properly reset..
-- xorw %ax, %ax
-- outb %al, $0xf0
-- call delay
--
-- outb %al, $0xf1
-- call delay
--
--# well, that went ok, I hope. Now we mask all interrupts - the rest
--# is done in init_IRQ().
-- movb $0xFF, %al # mask all interrupts for now
-- outb %al, $0xA1
-- call delay
--
-- movb $0xFB, %al # mask all irq's but irq2 which
-- outb %al, $0x21 # is cascaded
--
--# Well, that certainly wasn't fun :-(. Hopefully it works, and we don't
--# need no steenking BIOS anyway (except for the initial loading :-).
--# The BIOS-routine wants lots of unnecessary data, and it's less
--# "interesting" anyway. This is how REAL programmers do it.
--#
--# Well, now's the time to actually move into protected mode. To make
--# things as simple as possible, we do no register set-up or anything,
--# we let the gnu-compiled 32-bit programs do that. We just jump to
--# absolute address 0x1000 (or the loader supplied one),
--# in 32-bit protected mode.
--#
--# Note that the short jump isn't strictly needed, although there are
--# reasons why it might be a good idea. It won't hurt in any case.
-- movw $1, %ax # protected mode (PE) bit
-- lmsw %ax # This is it!
-- jmp flush_instr
--
--flush_instr:
-- xorw %bx, %bx # Flag to indicate a boot
-- xorl %esi, %esi # Pointer to real-mode code
-- movw %cs, %si
-- subw $DELTA_INITSEG, %si
-- shll $4, %esi # Convert to 32-bit pointer
--# NOTE: For high loaded big kernels we need a
--# jmpi 0x100000,__KERNEL_CS
--#
--# but we yet haven't reloaded the CS register, so the default size
--# of the target offset still is 16 bit.
--# However, using an operand prefix (0x66), the CPU will properly
--# take our 48 bit far pointer. (INTeL 80386 Programmer's Reference
--# Manual, Mixing 16-bit and 32-bit code, page 16-6)
--
-- .byte 0x66, 0xea # prefix + jmpi-opcode
--code32: .long 0x1000 # will be set to 0x100000
-- # for big kernels
-- .word __KERNEL_CS
--
--# Here's a bunch of information about your current kernel..
--kernel_version: .ascii UTS_RELEASE
-- .ascii " ("
-- .ascii LINUX_COMPILE_BY
-- .ascii "@"
-- .ascii LINUX_COMPILE_HOST
-- .ascii ") "
-- .ascii UTS_VERSION
-- .byte 0
--
--# This is the default real mode switch routine.
--# to be called just before protected mode transition
--default_switch:
-- cli # no interrupts allowed !
-- movb $0x80, %al # disable NMI for bootup
-- # sequence
-- outb %al, $0x70
-- lret
--
--
--# This routine checks that the keyboard command queue is empty
--# (after emptying the output buffers)
--#
--# Some machines have delusions that the keyboard buffer is always full
--# with no keyboard attached...
--#
--# If there is no keyboard controller, we will usually get 0xff
--# to all the reads. With each IO taking a microsecond and
--# a timeout of 100,000 iterations, this can take about half a
--# second ("delay" == outb to port 0x80). That should be ok,
--# and should also be plenty of time for a real keyboard controller
--# to empty.
--#
--
--empty_8042:
-- pushl %ecx
-- movl $100000, %ecx
--
--empty_8042_loop:
-- decl %ecx
-- jz empty_8042_end_loop
--
-- call delay
--
-- inb $0x64, %al # 8042 status port
-- testb $1, %al # output buffer?
-- jz no_output
--
-- call delay
-- inb $0x60, %al # read it
-- jmp empty_8042_loop
--
--no_output:
-- testb $2, %al # is input buffer full?
-- jnz empty_8042_loop # yes - loop
--empty_8042_end_loop:
-- popl %ecx
-- ret
--
--# Read the cmos clock. Return the seconds in al
--gettime:
-- pushw %cx
-- movb $0x02, %ah
-- int $0x1a
-- movb %dh, %al # %dh contains the seconds
-- andb $0x0f, %al
-- movb %dh, %ah
-- movb $0x04, %cl
-- shrb %cl, %ah
-- aad
-- popw %cx
-- ret
--
--# Delay is needed after doing I/O
--delay:
-- outb %al,$0x80
-- ret
--
--# Descriptor tables
--gdt:
-- .word 0, 0, 0, 0 # dummy
--
-- .word 0, 0, 0, 0 # unused
--
-- .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
-- .word 0 # base address = 0
-- .word 0x9A00 # code read/exec
-- .word 0x00CF # granularity = 4096, 386
-- # (+5th nibble of limit)
--
-- .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
-- .word 0 # base address = 0
-- .word 0x9200 # data read/write
-- .word 0x00CF # granularity = 4096, 386
-- # (+5th nibble of limit)
--gdt_end:
--idt_48:
-- .word 0 # idt limit = 0
-- .word 0, 0 # idt base = 0L
--gdt_48:
-- .word gdt_end-gdt-1 # gdt limit
-- .word 0, 0 # gdt base (filled in later)
--
--# Include video setup & detection code
--
--#include "../../i386/boot/video.S"
--
--# Setup signature -- must be last
--setup_sig1: .word SIG1
--setup_sig2: .word SIG2
--
--# After this point, there is some free space which is used by the video mode
--# handling code to store the temporary mode table (not used by the kernel).
--
--modelist:
--
--.text
--endtext:
--.data
--enddata:
--.bss
--endbss:
-diff -puN arch/x86_64/boot/tools/build.c~git-newsetup /dev/null
---- a/arch/x86_64/boot/tools/build.c
-+++ /dev/null
-@@ -1,185 +0,0 @@
--/*
-- * Copyright (C) 1991, 1992 Linus Torvalds
-- * Copyright (C) 1997 Martin Mares
-- */
--
--/*
-- * This file builds a disk-image from three different files:
-- *
-- * - bootsect: compatibility mbr which prints an error message if
-- * someone tries to boot the kernel directly.
-- * - setup: 8086 machine code, sets up system parm
-- * - system: 80386 code for actual system
-- *
-- * It does some checking that all files are of the correct type, and
-- * just writes the result to stdout, removing headers and padding to
-- * the right amount. It also writes some system data to stderr.
-- */
--
--/*
-- * Changes by tytso to allow root device specification
-- * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996
-- * Cross compiling fixes by Gertjan van Wingerde, July 1996
-- * Rewritten by Martin Mares, April 1997
-- */
--
--#include <stdio.h>
--#include <string.h>
--#include <stdlib.h>
--#include <stdarg.h>
--#include <sys/types.h>
--#include <sys/stat.h>
--#include <sys/sysmacros.h>
--#include <unistd.h>
--#include <fcntl.h>
--#include <asm/boot.h>
--
--typedef unsigned char byte;
--typedef unsigned short word;
--typedef unsigned long u32;
--
--#define DEFAULT_MAJOR_ROOT 0
--#define DEFAULT_MINOR_ROOT 0
--
--/* Minimal number of setup sectors (see also bootsect.S) */
--#define SETUP_SECTS 4
--
--byte buf[1024];
--int fd;
--int is_big_kernel;
--
--void die(const char * str, ...)
--{
-- va_list args;
-- va_start(args, str);
-- vfprintf(stderr, str, args);
-- fputc('\n', stderr);
-- exit(1);
--}
--
--void file_open(const char *name)
--{
-- if ((fd = open(name, O_RDONLY, 0)) < 0)
-- die("Unable to open `%s': %m", name);
--}
--
--void usage(void)
--{
-- die("Usage: build [-b] bootsect setup system [rootdev] [> image]");
--}
--
--int main(int argc, char ** argv)
--{
-- unsigned int i, c, sz, setup_sectors;
-- u32 sys_size;
-- byte major_root, minor_root;
-- struct stat sb;
--
-- if (argc > 2 && !strcmp(argv[1], "-b"))
-- {
-- is_big_kernel = 1;
-- argc--, argv++;
-- }
-- if ((argc < 4) || (argc > 5))
-- usage();
-- if (argc > 4) {
-- if (!strcmp(argv[4], "CURRENT")) {
-- if (stat("/", &sb)) {
-- perror("/");
-- die("Couldn't stat /");
-- }
-- major_root = major(sb.st_dev);
-- minor_root = minor(sb.st_dev);
-- } else if (strcmp(argv[4], "FLOPPY")) {
-- if (stat(argv[4], &sb)) {
-- perror(argv[4]);
-- die("Couldn't stat root device.");
-- }
-- major_root = major(sb.st_rdev);
-- minor_root = minor(sb.st_rdev);
-- } else {
-- major_root = 0;
-- minor_root = 0;
-- }
-- } else {
-- major_root = DEFAULT_MAJOR_ROOT;
-- minor_root = DEFAULT_MINOR_ROOT;
-- }
-- fprintf(stderr, "Root device is (%d, %d)\n", major_root, minor_root);
--
-- file_open(argv[1]);
-- i = read(fd, buf, sizeof(buf));
-- fprintf(stderr,"Boot sector %d bytes.\n",i);
-- if (i != 512)
-- die("Boot block must be exactly 512 bytes");
-- if (buf[510] != 0x55 || buf[511] != 0xaa)
-- die("Boot block hasn't got boot flag (0xAA55)");
-- buf[508] = minor_root;
-- buf[509] = major_root;
-- if (write(1, buf, 512) != 512)
-- die("Write call failed");
-- close (fd);
--
-- file_open(argv[2]); /* Copy the setup code */
-- for (i=0 ; (c=read(fd, buf, sizeof(buf)))>0 ; i+=c )
-- if (write(1, buf, c) != c)
-- die("Write call failed");
-- if (c != 0)
-- die("read-error on `setup'");
-- close (fd);
--
-- setup_sectors = (i + 511) / 512; /* Pad unused space with zeros */
-- /* for compatibility with ancient versions of LILO. */
-- if (setup_sectors < SETUP_SECTS)
-- setup_sectors = SETUP_SECTS;
-- fprintf(stderr, "Setup is %d bytes.\n", i);
-- memset(buf, 0, sizeof(buf));
-- while (i < setup_sectors * 512) {
-- c = setup_sectors * 512 - i;
-- if (c > sizeof(buf))
-- c = sizeof(buf);
-- if (write(1, buf, c) != c)
-- die("Write call failed");
-- i += c;
-- }
--
-- file_open(argv[3]);
-- if (fstat (fd, &sb))
-- die("Unable to stat `%s': %m", argv[3]);
-- sz = sb.st_size;
-- fprintf (stderr, "System is %d kB\n", sz/1024);
-- sys_size = (sz + 15) / 16;
-- if (!is_big_kernel && sys_size > DEF_SYSSIZE)
-- die("System is too big. Try using bzImage or modules.");
-- while (sz > 0) {
-- int l, n;
--
-- l = (sz > sizeof(buf)) ? sizeof(buf) : sz;
-- if ((n=read(fd, buf, l)) != l) {
-- if (n < 0)
-- die("Error reading %s: %m", argv[3]);
-- else
-- die("%s: Unexpected EOF", argv[3]);
-- }
-- if (write(1, buf, l) != l)
-- die("Write failed");
-- sz -= l;
-- }
-- close(fd);
--
-- if (lseek(1, 497, SEEK_SET) != 497) /* Write sizes to the bootsector */
-- die("Output: seek failed");
-- buf[0] = setup_sectors;
-- if (write(1, buf, 1) != 1)
-- die("Write of setup sector count failed");
-- if (lseek(1, 500, SEEK_SET) != 500)
-- die("Output: seek failed");
-- buf[0] = (sys_size & 0xff);
-- buf[1] = ((sys_size >> 8) & 0xff);
-- buf[2] = ((sys_size >> 16) & 0xff);
-- buf[3] = ((sys_size >> 24) & 0xff);
-- if (write(1, buf, 4) != 4)
-- die("Write of image length failed");
--
-- return 0; /* Everything is OK */
--}
-diff -puN arch/x86_64/kernel/Makefile~git-newsetup arch/x86_64/kernel/Makefile
---- a/arch/x86_64/kernel/Makefile~git-newsetup
-+++ a/arch/x86_64/kernel/Makefile
-@@ -45,6 +45,7 @@ obj-$(CONFIG_PCI) += early-quirks.o
-
- obj-y += topology.o
- obj-y += intel_cacheinfo.o
-+obj-y += addon_cpuid_features.o
- obj-y += pcspeaker.o
-
- CFLAGS_vsyscall.o := $(PROFILING) -g0
-@@ -58,6 +59,7 @@ cpuid-$(subst m,y,$(CONFIG_X86_CPUID))
- topology-y += ../../i386/kernel/topology.o
- microcode-$(subst m,y,$(CONFIG_MICROCODE)) += ../../i386/kernel/microcode.o
- intel_cacheinfo-y += ../../i386/kernel/cpu/intel_cacheinfo.o
-+addon_cpuid_features-y += ../../i386/kernel/cpu/addon_cpuid_features.o
- quirks-y += ../../i386/kernel/quirks.o
- i8237-y += ../../i386/kernel/i8237.o
- msr-$(subst m,y,$(CONFIG_X86_MSR)) += ../../i386/kernel/msr.o
-diff -puN arch/x86_64/kernel/setup.c~git-newsetup arch/x86_64/kernel/setup.c
---- a/arch/x86_64/kernel/setup.c~git-newsetup
-+++ a/arch/x86_64/kernel/setup.c
-@@ -855,6 +855,8 @@ void __cpuinit identify_cpu(struct cpuin
- c->x86_capability[2] = cpuid_edx(0x80860001);
- }
-
-+ init_scattered_cpuid_features(c);
-+
- c->apicid = phys_pkg_id(0);
-
- /*
-@@ -940,7 +942,7 @@ static int show_cpuinfo(struct seq_file
- "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
- "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
- "pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
-- "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", NULL,
-+ "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
-
- /* AMD-defined */
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-@@ -956,10 +958,11 @@ static int show_cpuinfo(struct seq_file
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* Other (Linux-defined) */
-- "cxmmx", NULL, "cyrix_arr", "centaur_mcr", NULL,
-- "constant_tsc", NULL, NULL,
-- "up", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-+ "cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
-+ NULL, NULL, NULL, NULL,
-+ "constant_tsc", "up", NULL, "arch_perfmon",
-+ "pebs", "bts", NULL, "sync_rdtsc",
-+ "rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* Intel-defined (#2) */
-@@ -970,7 +973,7 @@ static int show_cpuinfo(struct seq_file
-
- /* VIA/Cyrix/Centaur-defined */
- NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
-- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-+ "ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
-@@ -981,6 +984,12 @@ static int show_cpuinfo(struct seq_file
- "osvw", "ibs", NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-+
-+ /* Auxiliary (Linux-defined) */
-+ "ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- };
- static char *x86_power_flags[] = {
- "ts", /* temperature sensor */
-diff -puN arch/x86_64/kernel/verify_cpu.S~git-newsetup arch/x86_64/kernel/verify_cpu.S
---- a/arch/x86_64/kernel/verify_cpu.S~git-newsetup
-+++ a/arch/x86_64/kernel/verify_cpu.S
-@@ -37,20 +37,6 @@ verify_cpu:
- pushl $0 # Kill any dangerous flags
- popfl
-
-- /* minimum CPUID flags for x86-64 as defined by AMD */
--#define M(x) (1<<(x))
--#define M2(a,b) M(a)|M(b)
--#define M4(a,b,c,d) M(a)|M(b)|M(c)|M(d)
--
--#define SSE_MASK \
-- (M2(X86_FEATURE_XMM,X86_FEATURE_XMM2))
--#define REQUIRED_MASK1 \
-- (M4(X86_FEATURE_FPU,X86_FEATURE_PSE,X86_FEATURE_TSC,X86_FEATURE_MSR)|\
-- M4(X86_FEATURE_PAE,X86_FEATURE_CX8,X86_FEATURE_PGE,X86_FEATURE_CMOV)|\
-- M(X86_FEATURE_FXSR))
--#define REQUIRED_MASK2 \
-- (M(X86_FEATURE_LM - 32))
--
- pushfl # standard way to check for cpuid
- popl %eax
- movl %eax,%ebx
-@@ -79,8 +65,8 @@ verify_cpu:
- verify_cpu_noamd:
- movl $0x1,%eax # Does the cpu have what it takes
- cpuid
-- andl $REQUIRED_MASK1,%edx
-- xorl $REQUIRED_MASK1,%edx
-+ andl $REQUIRED_MASK0,%edx
-+ xorl $REQUIRED_MASK0,%edx
- jnz verify_cpu_no_longmode
-
- movl $0x80000000,%eax # See if extended cpuid is implemented
-@@ -90,8 +76,8 @@ verify_cpu_noamd:
-
- movl $0x80000001,%eax # Does the cpu have what it takes
- cpuid
-- andl $REQUIRED_MASK2,%edx
-- xorl $REQUIRED_MASK2,%edx
-+ andl $REQUIRED_MASK1,%edx
-+ xorl $REQUIRED_MASK1,%edx
- jnz verify_cpu_no_longmode
-
- verify_cpu_sse_test:
-diff -puN drivers/ide/legacy/hd.c~git-newsetup drivers/ide/legacy/hd.c
---- a/drivers/ide/legacy/hd.c~git-newsetup
-+++ a/drivers/ide/legacy/hd.c
-@@ -718,74 +718,25 @@ static int __init hd_init(void)
- device_timer.function = hd_times_out;
- blk_queue_hardsect_size(hd_queue, 512);
-
--#ifdef __i386__
- if (!NR_HD) {
-- extern struct drive_info drive_info;
-- unsigned char *BIOS = (unsigned char *) &drive_info;
-- unsigned long flags;
-- int cmos_disks;
--
-- for (drive=0 ; drive<2 ; drive++) {
-- hd_info[drive].cyl = *(unsigned short *) BIOS;
-- hd_info[drive].head = *(2+BIOS);
-- hd_info[drive].wpcom = *(unsigned short *) (5+BIOS);
-- hd_info[drive].ctl = *(8+BIOS);
-- hd_info[drive].lzone = *(unsigned short *) (12+BIOS);
-- hd_info[drive].sect = *(14+BIOS);
--#ifdef does_not_work_for_everybody_with_scsi_but_helps_ibm_vp
-- if (hd_info[drive].cyl && NR_HD == drive)
-- NR_HD++;
--#endif
-- BIOS += 16;
-- }
--
-- /*
-- We query CMOS about hard disks : it could be that
-- we have a SCSI/ESDI/etc controller that is BIOS
-- compatible with ST-506, and thus showing up in our
-- BIOS table, but not register compatible, and therefore
-- not present in CMOS.
--
-- Furthermore, we will assume that our ST-506 drives
-- <if any> are the primary drives in the system, and
-- the ones reflected as drive 1 or 2.
--
-- The first drive is stored in the high nibble of CMOS
-- byte 0x12, the second in the low nibble. This will be
-- either a 4 bit drive type or 0xf indicating use byte 0x19
-- for an 8 bit type, drive 1, 0x1a for drive 2 in CMOS.
--
-- Needless to say, a non-zero value means we have
-- an AT controller hard disk for that drive.
--
-- Currently the rtc_lock is a bit academic since this
-- driver is non-modular, but someday... ? Paul G.
-- */
--
-- spin_lock_irqsave(&rtc_lock, flags);
-- cmos_disks = CMOS_READ(0x12);
-- spin_unlock_irqrestore(&rtc_lock, flags);
--
-- if (cmos_disks & 0xf0) {
-- if (cmos_disks & 0x0f)
-- NR_HD = 2;
-- else
-- NR_HD = 1;
-- }
-- }
--#endif /* __i386__ */
--#ifdef __arm__
-- if (!NR_HD) {
-- /* We don't know anything about the drive. This means
-+ /*
-+ * We don't know anything about the drive. This means
- * that you *MUST* specify the drive parameters to the
- * kernel yourself.
-+ *
-+ * If we were on an i386, we used to read this info from
-+ * the BIOS or CMOS. This doesn't work all that well,
-+ * since this assumes that this is a primary or secondary
-+ * drive, and if we're using this legacy driver, it's
-+ * probably an auxilliary controller added to recover
-+ * legacy data off an ST-506 drive. Either way, it's
-+ * definitely safest to have the user explicitly specify
-+ * the information.
- */
- printk("hd: no drives specified - use hd=cyl,head,sectors"
- " on kernel command line\n");
-- }
--#endif
-- if (!NR_HD)
- goto out;
-+ }
-
- for (drive=0 ; drive < NR_HD ; drive++) {
- struct gendisk *disk = alloc_disk(64);
-diff -puN include/asm-i386/boot.h~git-newsetup include/asm-i386/boot.h
---- a/include/asm-i386/boot.h~git-newsetup
-+++ a/include/asm-i386/boot.h
-@@ -1,5 +1,5 @@
--#ifndef _LINUX_BOOT_H
--#define _LINUX_BOOT_H
-+#ifndef _ASM_BOOT_H
-+#define _ASM_BOOT_H
-
- /* Don't touch these, unless you really know what you're doing. */
- #define DEF_INITSEG 0x9000
-@@ -17,4 +17,4 @@
- + (CONFIG_PHYSICAL_ALIGN - 1)) \
- & ~(CONFIG_PHYSICAL_ALIGN - 1))
-
--#endif /* _LINUX_BOOT_H */
-+#endif /* _ASM_BOOT_H */
-diff -puN /dev/null include/asm-i386/bootparam.h
---- /dev/null
-+++ a/include/asm-i386/bootparam.h
-@@ -0,0 +1,85 @@
-+#ifndef _ASM_BOOTPARAM_H
-+#define _ASM_BOOTPARAM_H
-+
-+#include <linux/types.h>
-+#include <linux/screen_info.h>
-+#include <linux/apm_bios.h>
-+#include <asm/e820.h>
-+#include <linux/edd.h>
-+#include <video/edid.h>
-+
-+struct setup_header {
-+ u8 setup_sects;
-+ u16 root_flags;
-+ u32 syssize;
-+ u16 ram_size;
-+ u16 vid_mode;
-+ u16 root_dev;
-+ u16 boot_flag;
-+ u16 jump;
-+ u32 header;
-+ u16 version;
-+ u32 realmode_swtch;
-+ u16 start_sys;
-+ u16 kernel_version;
-+ u8 type_of_loader;
-+ u8 loadflags;
-+#define LOADED_HIGH 0x01
-+#define CAN_USE_HEAP 0x80
-+ u16 setup_move_size;
-+ u32 code32_start;
-+ u32 ramdisk_image;
-+ u32 ramdisk_size;
-+ u32 bootsect_kludge;
-+ u16 heap_end_ptr;
-+ u16 _pad1;
-+ u32 cmd_line_ptr;
-+ u32 initrd_addr_max;
-+ u32 kernel_alignment;
-+ u8 relocatable_kernel;
-+} __attribute__((packed));
-+
-+struct sys_desc_table {
-+ u16 length;
-+ u8 table[14];
-+};
-+
-+struct efi_info {
-+ u32 _pad1;
-+ u32 efi_systab;
-+ u32 efi_memdesc_size;
-+ u32 efi_memdec_version;
-+ u32 efi_memmap;
-+ u32 fi_memmap_size;
-+ u32 _pad2[2];
-+};
-+
-+/* The so-called "zeropage" */
-+struct boot_params {
-+ struct screen_info screen_info; /* 0x000 */
-+ struct apm_bios_info apm_bios_info; /* 0x040 */
-+ u8 _pad2[12]; /* 0x054 */
-+ u32 speedstep_info[4]; /* 0x060 */
-+ u8 _pad3[16]; /* 0x070 */
-+ u8 hd0_info[16]; /* obsolete! */ /* 0x080 */
-+ u8 hd1_info[16]; /* obsolete! */ /* 0x090 */
-+ struct sys_desc_table sys_desc_table; /* 0x0a0 */
-+ u8 _pad4[144]; /* 0x0b0 */
-+ struct edid_info edid_info; /* 0x140 */
-+ struct efi_info efi_info; /* 0x1c0 */
-+ u32 alt_mem_k; /* 0x1e0 */
-+ u32 scratch; /* Scratch field! */ /* 0x1e4 */
-+ u8 e820_entries; /* 0x1e8 */
-+ u8 eddbuf_entries; /* 0x1e9 */
-+ u8 edd_mbr_sig_buf_entries; /* 0x1ea */
-+ u8 _pad6[6]; /* 0x1eb */
-+ struct setup_header hdr; /* setup header */ /* 0x1f1 */
-+ u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
-+ u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
-+ struct e820entry e820_map[E820MAX]; /* 0x2d0 */
-+ u8 _pad8[48]; /* 0xcd0 */
-+ struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */
-+ u8 _pad9[276]; /* 0xeec */
-+} __attribute__((packed));
-+
-+#endif /* _ASM_BOOTPARAM_H */
-diff -puN include/asm-i386/cpufeature.h~git-newsetup include/asm-i386/cpufeature.h
---- a/include/asm-i386/cpufeature.h~git-newsetup
-+++ a/include/asm-i386/cpufeature.h
-@@ -12,7 +12,7 @@
- #endif
- #include <asm/required-features.h>
-
--#define NCAPINTS 7 /* N 32-bit words worth of info */
-+#define NCAPINTS 8 /* N 32-bit words worth of info */
-
- /* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */
- #define X86_FEATURE_FPU (0*32+ 0) /* Onboard FPU */
-@@ -81,6 +81,7 @@
- #define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */
- #define X86_FEATURE_LAPIC_TIMER_BROKEN (3*32+ 14) /* lapic timer broken in C1 */
- #define X86_FEATURE_SYNC_RDTSC (3*32+15) /* RDTSC synchronizes the CPU */
-+#define X86_FEATURE_REP_GOOD (3*32+16) /* rep microcode works well on this CPU */
-
- /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
- #define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
-@@ -108,11 +109,24 @@
- #define X86_FEATURE_LAHF_LM (6*32+ 0) /* LAHF/SAHF in long mode */
- #define X86_FEATURE_CMP_LEGACY (6*32+ 1) /* If yes HyperThreading not valid */
-
--#define cpu_has(c, bit) \
-- ((__builtin_constant_p(bit) && (bit) < 32 && \
-- (1UL << (bit)) & REQUIRED_MASK1) ? \
-- 1 : \
-- test_bit(bit, (c)->x86_capability))
-+/*
-+ * Auxiliary flags: Linux defined - For features scattered in various
-+ * CPUID levels like 0x6, 0xA etc
-+ */
-+#define X86_FEATURE_IDA (7*32+ 0) /* Intel Dynamic Acceleration */
-+
-+#define cpu_has(c, bit) \
-+ (__builtin_constant_p(bit) && \
-+ ( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) || \
-+ (((bit)>>5)==1 && (1UL<<((bit)&31) & REQUIRED_MASK1)) || \
-+ (((bit)>>5)==2 && (1UL<<((bit)&31) & REQUIRED_MASK2)) || \
-+ (((bit)>>5)==3 && (1UL<<((bit)&31) & REQUIRED_MASK3)) || \
-+ (((bit)>>5)==4 && (1UL<<((bit)&31) & REQUIRED_MASK4)) || \
-+ (((bit)>>5)==5 && (1UL<<((bit)&31) & REQUIRED_MASK5)) || \
-+ (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) || \
-+ (((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) ) \
-+ ? 1 : \
-+ test_bit(bit, (c)->x86_capability))
- #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit)
-
- #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU)
-diff -puN include/asm-i386/e820.h~git-newsetup include/asm-i386/e820.h
---- a/include/asm-i386/e820.h~git-newsetup
-+++ a/include/asm-i386/e820.h
-@@ -25,13 +25,15 @@
-
- #ifndef __ASSEMBLY__
-
-+struct e820entry {
-+ u64 addr; /* start of memory segment */
-+ u64 size; /* size of memory segment */
-+ u32 type; /* type of memory segment */
-+} __attribute__((packed));
-+
- struct e820map {
-- int nr_map;
-- struct e820entry {
-- unsigned long long addr; /* start of memory segment */
-- unsigned long long size; /* size of memory segment */
-- unsigned long type; /* type of memory segment */
-- } map[E820MAX];
-+ u32 nr_map;
-+ struct e820entry map[E820MAX];
- };
-
- extern struct e820map e820;
-diff -puN include/asm-i386/processor.h~git-newsetup include/asm-i386/processor.h
---- a/include/asm-i386/processor.h~git-newsetup
-+++ a/include/asm-i386/processor.h
-@@ -118,6 +118,7 @@ void __init cpu_detect(struct cpuinfo_x8
- extern void identify_boot_cpu(void);
- extern void identify_secondary_cpu(struct cpuinfo_x86 *);
- extern void print_cpu_info(struct cpuinfo_x86 *);
-+extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
- extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
- extern unsigned short num_cache_leaves;
-
-diff -puN include/asm-i386/required-features.h~git-newsetup include/asm-i386/required-features.h
---- a/include/asm-i386/required-features.h~git-newsetup
-+++ a/include/asm-i386/required-features.h
-@@ -3,7 +3,7 @@
-
- /* Define minimum CPUID feature set for kernel These bits are checked
- really early to actually display a visible error message before the
-- kernel dies. Only add word 0 bits here
-+ kernel dies. Make sure to assign features to the proper mask!
-
- Some requirements that are not in CPUID yet are also in the
- CONFIG_X86_MINIMUM_CPU mode which is checked too.
-@@ -11,24 +11,45 @@
- The real information is in arch/i386/Kconfig.cpu, this just converts
- the CONFIGs into a bitmask */
-
-+#ifndef CONFIG_MATH_EMULATION
-+# define NEED_FPU (1<<(X86_FEATURE_FPU & 31))
-+#else
-+# define NEED_FPU 0
-+#endif
-+
- #ifdef CONFIG_X86_PAE
--#define NEED_PAE (1<<X86_FEATURE_PAE)
-+# define NEED_PAE (1<<(X86_FEATURE_PAE & 31))
- #else
--#define NEED_PAE 0
-+# define NEED_PAE 0
- #endif
-
- #ifdef CONFIG_X86_CMOV
--#define NEED_CMOV (1<<X86_FEATURE_CMOV)
-+# define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31))
- #else
--#define NEED_CMOV 0
-+# define NEED_CMOV 0
- #endif
-
- #ifdef CONFIG_X86_CMPXCHG64
--#define NEED_CMPXCHG64 (1<<X86_FEATURE_CX8)
-+# define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31))
-+#else
-+# define NEED_CX8 0
-+#endif
-+
-+#define REQUIRED_MASK0 (NEED_FPU|NEED_PAE|NEED_CMOV|NEED_CX8)
-+
-+#ifdef CONFIG_X86_USE_3DNOW
-+# define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31))
- #else
--#define NEED_CMPXCHG64 0
-+# define NEED_3DNOW 0
- #endif
-
--#define REQUIRED_MASK1 (NEED_PAE|NEED_CMOV|NEED_CMPXCHG64)
-+#define REQUIRED_MASK1 (NEED_3DNOW)
-+
-+#define REQUIRED_MASK2 0
-+#define REQUIRED_MASK3 0
-+#define REQUIRED_MASK4 0
-+#define REQUIRED_MASK5 0
-+#define REQUIRED_MASK6 0
-+#define REQUIRED_MASK7 0
-
- #endif
-diff -puN include/asm-i386/setup.h~git-newsetup include/asm-i386/setup.h
---- a/include/asm-i386/setup.h~git-newsetup
-+++ a/include/asm-i386/setup.h
-@@ -26,12 +26,15 @@
- #define NEW_CL_POINTER 0x228 /* Relative to real mode data */
-
- #ifndef __ASSEMBLY__
-+
-+#include <asm/bootparam.h>
-+
- /*
- * This is set up by the setup-routine at boot-time
- */
--extern unsigned char boot_params[PARAM_SIZE];
-+extern struct boot_params boot_params;
-
--#define PARAM (boot_params)
-+#define PARAM ((char *)&boot_params)
- #define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
- #define EXT_MEM_K (*(unsigned short *) (PARAM+2))
- #define ALT_MEM_K (*(unsigned long *) (PARAM+0x1e0))
-@@ -39,8 +42,7 @@ extern unsigned char boot_params[PARAM_S
- #define E820_MAP ((struct e820entry *) (PARAM+E820MAP))
- #define APM_BIOS_INFO (*(struct apm_bios_info *) (PARAM+0x40))
- #define IST_INFO (*(struct ist_info *) (PARAM+0x60))
--#define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
--#define SYS_DESC_TABLE (*(struct sys_desc_table_struct*)(PARAM+0xa0))
-+#define SYS_DESC_TABLE (*(struct sys_desc_table *)(PARAM+0xa0))
- #define EFI_SYSTAB ((efi_system_table_t *) *((unsigned long *)(PARAM+0x1c4)))
- #define EFI_MEMDESC_SIZE (*((unsigned long *) (PARAM+0x1c8)))
- #define EFI_MEMDESC_VERSION (*((unsigned long *) (PARAM+0x1cc)))
-diff -puN include/asm-x86_64/alternative.h~git-newsetup include/asm-x86_64/alternative.h
---- a/include/asm-x86_64/alternative.h~git-newsetup
-+++ a/include/asm-x86_64/alternative.h
-@@ -5,6 +5,41 @@
-
- #include <linux/types.h>
- #include <linux/stddef.h>
-+
-+/*
-+ * Alternative inline assembly for SMP.
-+ *
-+ * The LOCK_PREFIX macro defined here replaces the LOCK and
-+ * LOCK_PREFIX macros used everywhere in the source tree.
-+ *
-+ * SMP alternatives use the same data structures as the other
-+ * alternatives and the X86_FEATURE_UP flag to indicate the case of a
-+ * UP system running a SMP kernel. The existing apply_alternatives()
-+ * works fine for patching a SMP kernel for UP.
-+ *
-+ * The SMP alternative tables can be kept after boot and contain both
-+ * UP and SMP versions of the instructions to allow switching back to
-+ * SMP at runtime, when hotplugging in a new CPU, which is especially
-+ * useful in virtualized environments.
-+ *
-+ * The very common lock prefix is handled as special case in a
-+ * separate table which is a pure address list without replacement ptr
-+ * and size information. That keeps the table sizes small.
-+ */
-+
-+#ifdef CONFIG_SMP
-+#define LOCK_PREFIX \
-+ ".section .smp_locks,\"a\"\n" \
-+ " .align 8\n" \
-+ " .quad 661f\n" /* address */ \
-+ ".previous\n" \
-+ "661:\n\tlock; "
-+
-+#else /* ! CONFIG_SMP */
-+#define LOCK_PREFIX ""
-+#endif
-+
-+/* This must be included *after* the definition of LOCK_PREFIX */
- #include <asm/cpufeature.h>
-
- struct alt_instr {
-@@ -108,39 +143,6 @@ static inline void alternatives_smp_swit
- */
- #define ASM_OUTPUT2(a, b) a, b
-
--/*
-- * Alternative inline assembly for SMP.
-- *
-- * The LOCK_PREFIX macro defined here replaces the LOCK and
-- * LOCK_PREFIX macros used everywhere in the source tree.
-- *
-- * SMP alternatives use the same data structures as the other
-- * alternatives and the X86_FEATURE_UP flag to indicate the case of a
-- * UP system running a SMP kernel. The existing apply_alternatives()
-- * works fine for patching a SMP kernel for UP.
-- *
-- * The SMP alternative tables can be kept after boot and contain both
-- * UP and SMP versions of the instructions to allow switching back to
-- * SMP at runtime, when hotplugging in a new CPU, which is especially
-- * useful in virtualized environments.
-- *
-- * The very common lock prefix is handled as special case in a
-- * separate table which is a pure address list without replacement ptr
-- * and size information. That keeps the table sizes small.
-- */
--
--#ifdef CONFIG_SMP
--#define LOCK_PREFIX \
-- ".section .smp_locks,\"a\"\n" \
-- " .align 8\n" \
-- " .quad 661f\n" /* address */ \
-- ".previous\n" \
-- "661:\n\tlock; "
--
--#else /* ! CONFIG_SMP */
--#define LOCK_PREFIX ""
--#endif
--
- struct paravirt_patch;
- #ifdef CONFIG_PARAVIRT
- void apply_paravirt(struct paravirt_patch *start, struct paravirt_patch *end);
-diff -puN include/asm-x86_64/boot.h~git-newsetup include/asm-x86_64/boot.h
---- a/include/asm-x86_64/boot.h~git-newsetup
-+++ a/include/asm-x86_64/boot.h
-@@ -1,15 +1 @@
--#ifndef _LINUX_BOOT_H
--#define _LINUX_BOOT_H
--
--/* Don't touch these, unless you really know what you're doing. */
--#define DEF_INITSEG 0x9000
--#define DEF_SYSSEG 0x1000
--#define DEF_SETUPSEG 0x9020
--#define DEF_SYSSIZE 0x7F00
--
--/* Internal svga startup constants */
--#define NORMAL_VGA 0xffff /* 80x25 mode */
--#define EXTENDED_VGA 0xfffe /* 80x50 mode */
--#define ASK_VGA 0xfffd /* ask for it at bootup */
--
--#endif
-+#include <asm-i386/boot.h>
-diff -puN /dev/null include/asm-x86_64/bootparam.h
---- /dev/null
-+++ a/include/asm-x86_64/bootparam.h
-@@ -0,0 +1 @@
-+#include <asm-i386/bootparam.h>
-diff -puN include/asm-x86_64/cpufeature.h~git-newsetup include/asm-x86_64/cpufeature.h
---- a/include/asm-x86_64/cpufeature.h~git-newsetup
-+++ a/include/asm-x86_64/cpufeature.h
-@@ -7,115 +7,24 @@
- #ifndef __ASM_X8664_CPUFEATURE_H
- #define __ASM_X8664_CPUFEATURE_H
-
--#define NCAPINTS 7 /* N 32-bit words worth of info */
-+#include <asm-i386/cpufeature.h>
-
--/* Intel-defined CPU features, CPUID level 0x00000001, word 0 */
--#define X86_FEATURE_FPU (0*32+ 0) /* Onboard FPU */
--#define X86_FEATURE_VME (0*32+ 1) /* Virtual Mode Extensions */
--#define X86_FEATURE_DE (0*32+ 2) /* Debugging Extensions */
--#define X86_FEATURE_PSE (0*32+ 3) /* Page Size Extensions */
--#define X86_FEATURE_TSC (0*32+ 4) /* Time Stamp Counter */
--#define X86_FEATURE_MSR (0*32+ 5) /* Model-Specific Registers, RDMSR, WRMSR */
--#define X86_FEATURE_PAE (0*32+ 6) /* Physical Address Extensions */
--#define X86_FEATURE_MCE (0*32+ 7) /* Machine Check Architecture */
--#define X86_FEATURE_CX8 (0*32+ 8) /* CMPXCHG8 instruction */
--#define X86_FEATURE_APIC (0*32+ 9) /* Onboard APIC */
--#define X86_FEATURE_SEP (0*32+11) /* SYSENTER/SYSEXIT */
--#define X86_FEATURE_MTRR (0*32+12) /* Memory Type Range Registers */
--#define X86_FEATURE_PGE (0*32+13) /* Page Global Enable */
--#define X86_FEATURE_MCA (0*32+14) /* Machine Check Architecture */
--#define X86_FEATURE_CMOV (0*32+15) /* CMOV instruction (FCMOVCC and FCOMI too if FPU present) */
--#define X86_FEATURE_PAT (0*32+16) /* Page Attribute Table */
--#define X86_FEATURE_PSE36 (0*32+17) /* 36-bit PSEs */
--#define X86_FEATURE_PN (0*32+18) /* Processor serial number */
--#define X86_FEATURE_CLFLSH (0*32+19) /* Supports the CLFLUSH instruction */
--#define X86_FEATURE_DS (0*32+21) /* Debug Store */
--#define X86_FEATURE_ACPI (0*32+22) /* ACPI via MSR */
--#define X86_FEATURE_MMX (0*32+23) /* Multimedia Extensions */
--#define X86_FEATURE_FXSR (0*32+24) /* FXSAVE and FXRSTOR instructions (fast save and restore */
-- /* of FPU context), and CR4.OSFXSR available */
--#define X86_FEATURE_XMM (0*32+25) /* Streaming SIMD Extensions */
--#define X86_FEATURE_XMM2 (0*32+26) /* Streaming SIMD Extensions-2 */
--#define X86_FEATURE_SELFSNOOP (0*32+27) /* CPU self snoop */
--#define X86_FEATURE_HT (0*32+28) /* Hyper-Threading */
--#define X86_FEATURE_ACC (0*32+29) /* Automatic clock control */
--#define X86_FEATURE_IA64 (0*32+30) /* IA-64 processor */
--
--/* AMD-defined CPU features, CPUID level 0x80000001, word 1 */
--/* Don't duplicate feature flags which are redundant with Intel! */
--#define X86_FEATURE_SYSCALL (1*32+11) /* SYSCALL/SYSRET */
--#define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */
--#define X86_FEATURE_FXSR_OPT (1*32+25) /* FXSR optimizations */
--#define X86_FEATURE_RDTSCP (1*32+27) /* RDTSCP */
--#define X86_FEATURE_LM (1*32+29) /* Long Mode (x86-64) */
--#define X86_FEATURE_3DNOWEXT (1*32+30) /* AMD 3DNow! extensions */
--#define X86_FEATURE_3DNOW (1*32+31) /* 3DNow! */
--
--/* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
--#define X86_FEATURE_RECOVERY (2*32+ 0) /* CPU in recovery mode */
--#define X86_FEATURE_LONGRUN (2*32+ 1) /* Longrun power control */
--#define X86_FEATURE_LRTI (2*32+ 3) /* LongRun table interface */
--
--/* Other features, Linux-defined mapping, word 3 */
--/* This range is used for feature bits which conflict or are synthesized */
--#define X86_FEATURE_CXMMX (3*32+ 0) /* Cyrix MMX extensions */
--#define X86_FEATURE_K6_MTRR (3*32+ 1) /* AMD K6 nonstandard MTRRs */
--#define X86_FEATURE_CYRIX_ARR (3*32+ 2) /* Cyrix ARRs (= MTRRs) */
--#define X86_FEATURE_CENTAUR_MCR (3*32+ 3) /* Centaur MCRs (= MTRRs) */
--#define X86_FEATURE_REP_GOOD (3*32+ 4) /* rep microcode works well on this CPU */
--#define X86_FEATURE_CONSTANT_TSC (3*32+5) /* TSC runs at constant rate */
--#define X86_FEATURE_SYNC_RDTSC (3*32+6) /* RDTSC syncs CPU core */
--#define X86_FEATURE_FXSAVE_LEAK (3*32+7) /* FIP/FOP/FDP leaks through FXSAVE */
--#define X86_FEATURE_UP (3*32+8) /* SMP kernel running on UP */
--#define X86_FEATURE_ARCH_PERFMON (3*32+9) /* Intel Architectural PerfMon */
--#define X86_FEATURE_PEBS (3*32+10) /* Precise-Event Based Sampling */
--#define X86_FEATURE_BTS (3*32+11) /* Branch Trace Store */
--
--/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
--#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
--#define X86_FEATURE_MWAIT (4*32+ 3) /* Monitor/Mwait support */
--#define X86_FEATURE_DSCPL (4*32+ 4) /* CPL Qualified Debug Store */
--#define X86_FEATURE_EST (4*32+ 7) /* Enhanced SpeedStep */
--#define X86_FEATURE_TM2 (4*32+ 8) /* Thermal Monitor 2 */
--#define X86_FEATURE_CID (4*32+10) /* Context ID */
--#define X86_FEATURE_CX16 (4*32+13) /* CMPXCHG16B */
--#define X86_FEATURE_XTPR (4*32+14) /* Send Task Priority Messages */
--
--/* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
--#define X86_FEATURE_XSTORE (5*32+ 2) /* on-CPU RNG present (xstore insn) */
--#define X86_FEATURE_XSTORE_EN (5*32+ 3) /* on-CPU RNG enabled */
--#define X86_FEATURE_XCRYPT (5*32+ 6) /* on-CPU crypto (xcrypt insn) */
--#define X86_FEATURE_XCRYPT_EN (5*32+ 7) /* on-CPU crypto enabled */
--
--/* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */
--#define X86_FEATURE_LAHF_LM (6*32+ 0) /* LAHF/SAHF in long mode */
--#define X86_FEATURE_CMP_LEGACY (6*32+ 1) /* If yes HyperThreading not valid */
--
--#define cpu_has(c, bit) test_bit(bit, (c)->x86_capability)
--#define boot_cpu_has(bit) test_bit(bit, boot_cpu_data.x86_capability)
--
--#define cpu_has_fpu 1
-+#undef cpu_has_vme
- #define cpu_has_vme 0
--#define cpu_has_de 1
--#define cpu_has_pse 1
--#define cpu_has_tsc 1
-+
-+#undef cpu_has_pae
- #define cpu_has_pae ___BUG___
--#define cpu_has_pge 1
--#define cpu_has_apic boot_cpu_has(X86_FEATURE_APIC)
--#define cpu_has_mtrr 1
--#define cpu_has_mmx 1
--#define cpu_has_fxsr 1
--#define cpu_has_xmm 1
--#define cpu_has_xmm2 1
--#define cpu_has_xmm3 boot_cpu_has(X86_FEATURE_XMM3)
--#define cpu_has_ht boot_cpu_has(X86_FEATURE_HT)
-+
-+#undef cpu_has_mp
- #define cpu_has_mp 1 /* XXX */
-+
-+#undef cpu_has_k6_mtrr
- #define cpu_has_k6_mtrr 0
-+
-+#undef cpu_has_cyrix_arr
- #define cpu_has_cyrix_arr 0
-+
-+#undef cpu_has_centaur_mcr
- #define cpu_has_centaur_mcr 0
--#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH)
--#define cpu_has_ds boot_cpu_has(X86_FEATURE_DS)
--#define cpu_has_pebs boot_cpu_has(X86_FEATURE_PEBS)
--#define cpu_has_bts boot_cpu_has(X86_FEATURE_BTS)
-
- #endif /* __ASM_X8664_CPUFEATURE_H */
-diff -puN include/asm-x86_64/e820.h~git-newsetup include/asm-x86_64/e820.h
---- a/include/asm-x86_64/e820.h~git-newsetup
-+++ a/include/asm-x86_64/e820.h
-@@ -11,7 +11,9 @@
- #ifndef __E820_HEADER
- #define __E820_HEADER
-
--#include <linux/mmzone.h>
-+#ifndef _SETUP
-+# include <linux/mmzone.h>
-+#endif
-
- #define E820MAP 0x2d0 /* our map */
- #define E820MAX 128 /* number of entries in E820MAP */
-@@ -30,7 +32,7 @@ struct e820entry {
- } __attribute__((packed));
-
- struct e820map {
-- int nr_map;
-+ u32 nr_map;
- struct e820entry map[E820MAX];
- };
-
-diff -puN include/asm-x86_64/processor.h~git-newsetup include/asm-x86_64/processor.h
---- a/include/asm-x86_64/processor.h~git-newsetup
-+++ a/include/asm-x86_64/processor.h
-@@ -99,6 +99,7 @@ extern char ignore_irq13;
-
- extern void identify_cpu(struct cpuinfo_x86 *);
- extern void print_cpu_info(struct cpuinfo_x86 *);
-+extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
- extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
- extern unsigned short num_cache_leaves;
-
-@@ -367,8 +368,6 @@ static inline void sync_core(void)
- asm volatile("cpuid" : "=a" (tmp) : "0" (1) : "ebx","ecx","edx","memory");
- }
-
--#define cpu_has_fpu 1
--
- #define ARCH_HAS_PREFETCH
- static inline void prefetch(void *x)
- {
-diff -puN /dev/null include/asm-x86_64/required-features.h
---- /dev/null
-+++ a/include/asm-x86_64/required-features.h
-@@ -0,0 +1,46 @@
-+#ifndef _ASM_REQUIRED_FEATURES_H
-+#define _ASM_REQUIRED_FEATURES_H 1
-+
-+/* Define minimum CPUID feature set for kernel These bits are checked
-+ really early to actually display a visible error message before the
-+ kernel dies. Make sure to assign features to the proper mask!
-+
-+ The real information is in arch/x86_64/Kconfig.cpu, this just converts
-+ the CONFIGs into a bitmask */
-+
-+/* x86-64 baseline features */
-+#define NEED_FPU (1<<(X86_FEATURE_FPU & 31))
-+#define NEED_PSE (1<<(X86_FEATURE_PSE & 31))
-+#define NEED_MSR (1<<(X86_FEATURE_MSR & 31))
-+#define NEED_PAE (1<<(X86_FEATURE_PAE & 31))
-+#define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31))
-+#define NEED_PGE (1<<(X86_FEATURE_PGE & 31))
-+#define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31))
-+#define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31))
-+#define NEED_XMM (1<<(X86_FEATURE_XMM & 31))
-+#define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31))
-+
-+#define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\
-+ NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\
-+ NEED_XMM|NEED_XMM2)
-+#define SSE_MASK (NEED_XMM|NEED_XMM2)
-+
-+/* x86-64 baseline features */
-+#define NEED_LM (1<<(X86_FEATURE_LM & 31))
-+
-+#ifdef CONFIG_X86_USE_3DNOW
-+# define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31))
-+#else
-+# define NEED_3DNOW 0
-+#endif
-+
-+#define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW)
-+
-+#define REQUIRED_MASK2 0
-+#define REQUIRED_MASK3 0
-+#define REQUIRED_MASK4 0
-+#define REQUIRED_MASK5 0
-+#define REQUIRED_MASK6 0
-+#define REQUIRED_MASK7 0
-+
-+#endif
-diff -puN include/asm-x86_64/segment.h~git-newsetup include/asm-x86_64/segment.h
---- a/include/asm-x86_64/segment.h~git-newsetup
-+++ a/include/asm-x86_64/segment.h
-@@ -3,6 +3,14 @@
-
- #include <asm/cache.h>
-
-+/* Simple and small GDT entries for booting only */
-+
-+#define GDT_ENTRY_BOOT_CS 2
-+#define __BOOT_CS (GDT_ENTRY_BOOT_CS * 8)
-+
-+#define GDT_ENTRY_BOOT_DS (GDT_ENTRY_BOOT_CS + 1)
-+#define __BOOT_DS (GDT_ENTRY_BOOT_DS * 8)
-+
- #define __KERNEL_CS 0x10
- #define __KERNEL_DS 0x18
-
-diff -puN include/linux/edd.h~git-newsetup include/linux/edd.h
---- a/include/linux/edd.h~git-newsetup
-+++ a/include/linux/edd.h
-@@ -49,10 +49,6 @@
- #define EDD_MBR_SIG_MAX 16 /* max number of signatures to store */
- #define EDD_MBR_SIG_NR_BUF 0x1ea /* addr of number of MBR signtaures at EDD_MBR_SIG_BUF
- in boot_params - treat this as 1 byte */
--#define EDD_CL_EQUALS 0x3d646465 /* "edd=" */
--#define EDD_CL_OFF 0x666f /* "of" for off */
--#define EDD_CL_SKIP 0x6b73 /* "sk" for skipmbr */
--#define EDD_CL_ON 0x6e6f /* "on" for on */
-
- #ifndef __ASSEMBLY__
-
-diff -puN include/linux/screen_info.h~git-newsetup include/linux/screen_info.h
---- a/include/linux/screen_info.h~git-newsetup
-+++ a/include/linux/screen_info.h
-@@ -10,7 +10,7 @@
- struct screen_info {
- u8 orig_x; /* 0x00 */
- u8 orig_y; /* 0x01 */
-- u16 dontuse1; /* 0x02 -- EXT_MEM_K sits here */
-+ u16 ext_mem_k; /* 0x02 */
- u16 orig_video_page; /* 0x04 */
- u8 orig_video_mode; /* 0x06 */
- u8 orig_video_cols; /* 0x07 */
-@@ -27,7 +27,7 @@ struct screen_info {
- u16 lfb_depth; /* 0x16 */
- u32 lfb_base; /* 0x18 */
- u32 lfb_size; /* 0x1c */
-- u16 dontuse2, dontuse3; /* 0x20 -- CL_MAGIC and CL_OFFSET here */
-+ u16 cl_magic, cl_offset; /* 0x20 */
- u16 lfb_linelength; /* 0x24 */
- u8 red_size; /* 0x26 */
- u8 red_pos; /* 0x27 */
-@@ -42,9 +42,8 @@ struct screen_info {
- u16 pages; /* 0x32 */
- u16 vesa_attributes; /* 0x34 */
- u32 capabilities; /* 0x36 */
-- /* 0x3a -- 0x3b reserved for future expansion */
-- /* 0x3c -- 0x3f micro stack for relocatable kernels */
--};
-+ u8 _reserved[6]; /* 0x3a */
-+} __attribute__((packed));
-
- extern struct screen_info screen_info;
-
-_
+++ /dev/null
-From: Ivo van Doorn <ivdoorn@gmail.com>
-Date: Mon, 14 May 2007 21:06:01 +0000 (+0200)
-Subject: [PATCH] eeprom_93cx6: Add comment for 1us delay after pulse
-X-Git-Tag: v2.6.23-rc1~1201^2~73
-X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=4b914dc0493edff19ff698a18198a173a14ba9d2
-
-[PATCH] eeprom_93cx6: Add comment for 1us delay after pulse
-
-This will add a comment for the 1us delay which is taken
-after the pulse has been switched. The 1us delay is based
-on the specifications so that should be made clear.
-
-Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
-Signed-off-by: John W. Linville <linville@tuxdriver.com>
----
-
-diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
-index bfcb434..0d6d742 100644
---- a/drivers/misc/eeprom_93cx6.c
-+++ b/drivers/misc/eeprom_93cx6.c
-@@ -39,6 +39,12 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
- {
- eeprom->reg_data_clock = 1;
- eeprom->register_write(eeprom);
-+
-+ /*
-+ * Add a short delay for the pulse to work.
-+ * According to the specifications the minimal time
-+ * should be 450ns so a 1us delay is sufficient.
-+ */
- udelay(1);
- }
-
-@@ -46,6 +52,12 @@ static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
- {
- eeprom->reg_data_clock = 0;
- eeprom->register_write(eeprom);
-+
-+ /*
-+ * Add a short delay for the pulse to work.
-+ * According to the specifications the minimal time
-+ * should be 450ns so a 1us delay is sufficient.
-+ */
- udelay(1);
- }
-
+++ /dev/null
-From: Andrew Morton <akpm@linux-foundation.org>
-
-Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
----
-
- arch/i386/kernel/cpu/Makefile | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff -puN arch/i386/kernel/cpu/Makefile~git-newsetup-fixup arch/i386/kernel/cpu/Makefile
---- a/arch/i386/kernel/cpu/Makefile~git-newsetup-fixup
-+++ a/arch/i386/kernel/cpu/Makefile
-@@ -8,7 +8,7 @@ obj-y += amd.o
- obj-y += cyrix.o
- obj-y += centaur.o
- obj-y += transmeta.o
--obj-y += intel.o intel_cacheinfo.o
-+obj-y += intel.o intel_cacheinfo.o addon_cpuid_features.o
- obj-y += rise.o
- obj-y += nexgen.o
- obj-y += umc.o
-
-_
+++ /dev/null
-From: John W. Linville <linville@tuxdriver.com>
-Date: Tue, 12 Jun 2007 01:37:46 +0000 (-0400)
-Subject: [PATCH] eeprom_93cx6: shorten pulse timing to match spec
-X-Git-Tag: v2.6.23-rc1~1201^2~71
-X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=7e9400f178d291b2208c4ed9aac0f425c1364000
-
-[PATCH] eeprom_93cx6: shorten pulse timing to match spec
-
-93cx6 datasheet available here:
-
- http://ww1.microchip.com/downloads/en/DeviceDoc/21749F.pdf
-
-Figure 1-1 and Table 1-2 on pages 4-5 indicate that both Clock High
-Time and Clock Low Time have largest minimum times of 450ns.
-
-Signed-off-by: John W. Linville <linville@tuxdriver.com>
----
-
-diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
-index 0d6d742..ac515b0 100644
---- a/drivers/misc/eeprom_93cx6.c
-+++ b/drivers/misc/eeprom_93cx6.c
-@@ -42,10 +42,10 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
-
- /*
- * Add a short delay for the pulse to work.
-- * According to the specifications the minimal time
-- * should be 450ns so a 1us delay is sufficient.
-+ * According to the specifications the "maximum minimum"
-+ * time should be 450ns.
- */
-- udelay(1);
-+ ndelay(450);
- }
-
- static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
+++ /dev/null
-From: Francois Romieu <romieu@fr.zoreil.com>
-Date: Tue, 3 Jul 2007 22:31:44 +0000 (+0200)
-Subject: eeprom_93cx6: shorten pulse timing to match spec (bis)
-X-Git-Tag: v2.6.23-rc1~1151^2~11
-X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=8abd531e3f77188de2fc41e677d075cc66e61631
-
-eeprom_93cx6: shorten pulse timing to match spec (bis)
-
-Based on an original idea by John W. Linville.
-
-It is the missing part of 42d45ccd60636c28e35c2016f091783bc14ad99c
-
-Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
-Signed-off-by: Jeff Garzik <jeff@garzik.org>
----
-
-diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
-index ac515b0..ea55654 100644
---- a/drivers/misc/eeprom_93cx6.c
-+++ b/drivers/misc/eeprom_93cx6.c
-@@ -55,10 +55,10 @@ static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
-
- /*
- * Add a short delay for the pulse to work.
-- * According to the specifications the minimal time
-- * should be 450ns so a 1us delay is sufficient.
-+ * According to the specifications the "maximum minimum"
-+ * time should be 450ns.
- */
-- udelay(1);
-+ ndelay(450);
- }
-
- static void eeprom_93cx6_startup(struct eeprom_93cx6 *eeprom)
--- /dev/null
+GIT 1783e2f0f21444020e3dee1be46b1e34af0ea3e7 git+ssh://master.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-newsetup.git
+
+commit 1783e2f0f21444020e3dee1be46b1e34af0ea3e7
+Author: Venki Pallipadi <venkatesh.pallipadi@intel.com>
+Date: Wed Jun 20 14:12:39 2007 -0700
+
+ Use a new CPU feature word to cover all Intel features that are spread around
+
+ in different CPUID leafs like 0x5, 0x6 and 0xA. Make this
+ feature detection code common across i386 and x86_64.
+
+ Display Intel Dynamic Acceleration feature in /proc/cpuinfo. This feature
+ will be enabled automatically by current acpi-cpufreq driver.
+
+ Refer to Intel Software Developer's Manual for more details about the feature.
+
+ Thanks to hpa (H Peter Anvin) for the making the actual code detecting the
+ scattered features data-driven.
+
+ Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit cd19eb67cd6636a4e5c9df99631422c7c7286f59
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed Jun 20 14:33:17 2007 -0700
+
+ x86 setup: move __bss_start into the .bss segment
+
+ Move __bss_start into the .bss segment, and create __bss_end.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 100327ad6b609cd28970219be57d293847d1261d
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed Jun 6 22:07:01 2007 -0700
+
+ x86 setup: remove TSC as a required feature
+
+ Remove TSC as a required feature, in anticipation of CONFIG_X86_TSC
+ removal.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 7c91a172b8af7d4ba087f1f88ed5b155ed459ca3
+Author: Antonino A. Daplas <adaplas@gmail.com>
+Date: Tue Jun 5 19:21:05 2007 +0800
+
+ i386: Set 6-bit DAC channel properties in vesa video setup
+
+ If the video BIOS is not capable of switching or failed to switch the
+ hardware to 8-bit DAC, the channel properties are not set. This leads
+ to a blank (all black) display with vesafb at 8 bpp. Fix by defaulting
+ to a 6-bit DAC.
+
+ Signed-off-by: Antonino Daplas <adaplas@gmail.com>
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 6eac2d442de8d87eac94a4ca8600bd87219fa06b
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue Jun 5 16:19:36 2007 -0700
+
+ x86 setup: arch/i386/boot/cpucheck.c whitespace cleanup
+
+ Remove stealth whitespace
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit f7d89f05a30433034a1b4651143afdbb2a8a9c92
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 24 16:56:44 2007 -0700
+
+ hd.c: remove BIOS/CMOS queries
+
+ An ST-506 disk these days is pretty much someone trying to pull ancient
+ data using an auxilliary controller. Pulling data from the BIOS or CMOS
+ is just plain wrong, since it's likely to be the primary OS disk... and
+ would be user-entered data anyway. Instead, require the user enters it
+ on the command line.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 14c2fdb3bbfd6a9a774980e446c2443150749891
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 24 15:25:10 2007 -0700
+
+ x86: add back pbe bit to visible CPUID flags
+
+ Add pbe back to the visible CPUID flags. We *do* correctly filter abuses
+ of this bit for 3DNow! in all the appropriate paths.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit e071b068a3b9f318be314f0378e655e2eb50ac89
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 23 14:52:34 2007 -0700
+
+ x86 setup: VIA feature mask MSR doesn't just apply to model <= 9
+
+ The VIA feature mask MSR is known to be present on model 10, and it
+ seems likely it will continue to be supported. Since we only touch the
+ MSR if we're about to print an error message anyway, go ahead and be
+ aggressive.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit abe0c5aa1827932cda9c754a3842ec22b278d704
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 22 17:17:41 2007 -0700
+
+ x86 setup: correct inline assembly constraints in edd.c
+
+ Fix the inline assembly constraints in edd.c. In particular, "driveno"
+ was getting clobbered on some (buggy?) BIOSes.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit c2e5887ad275aab90673a3e33344f09946159cf7
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 18 10:02:55 2007 -0700
+
+ x86 setup: force the assembler to generate a 2-byte jump in header
+
+ The jump instruction in the header only has two bytes available, so
+ it *better* be a 2-byte jump! Unfortunately, the assembler will
+ always generate a 3/5-byte jump when the target is in a different
+ section. Deal with that by generating the jump instruction
+ explicitly from .byte's, just like we do elsewhere when we need a
+ specific binary representation of a certain instruction.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit ce82e3b93eba48b6852822a03efa73c74e165d4f
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 17 15:44:48 2007 -0700
+
+ x86 setup: move the symbol start_of_setup into the proper section.
+
+ start_of_setup is the beginning of the executable code and should be
+ located in the appropriate section.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit e5f3a529457a5bfaf8f8783fb86013221279a81c
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 17 15:43:19 2007 -0700
+
+ x86 setup: add an ASSERT that the header ends up in the right place
+
+ Just in case we have funnies involving the linker or people putting
+ inappropriate align statements, make the linker abort if the setup
+ header ends up in the wrong place.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit d9dbde725687ab99d1f529f49f14d1e280cc5cac
+Author: Alexander van Heukelum <heukelum@mailshack.com>
+Date: Thu May 17 20:54:25 2007 +0200
+
+ x86 new setup: use appropriate sections for code and data
+
+ An intermediate elf file is generated for the 16-bit setup code.
+ The generated code can be viewed using objdump -m i8086 -d. As it
+ stands, it also tries to disassemble the bugger_off_msg, which
+ results in garbage. This introduces two new sections to separate
+ the code and the data part of the bootsector stub. It also moves
+ some code from the .header section (a data section) to .inittext.
+
+ Signed-off-by: Alexander van Heukelum <heukelum@mailshack.com>
+
+commit 0d7558a81cf61e9fd2332a54897c5fd18df0d7f2
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 16 22:03:16 2007 -0700
+
+ x86 setup: use -include code16gcc.h instead of explicit #include
+
+ Use -include in the Makefile instead of #include to include code16gcc.h.
+ This really is more of a compiler switch than anything else, and is a lot
+ cleaner to do implicitly.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 017ce54e8a4a9628a76d6b510c7309a7e4e111a8
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 16 18:48:06 2007 -0700
+
+ x86 setup: enable features on Centaur (VIA) and Transmeta processors
+
+ AMD are not the only ones who sometimes mask features which the kernel
+ may very well depend on. VIA and Transmeta do, too. Add code to enable
+ these features during checking.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit b794f5f9c5089709f3df38c6d91869fa38a9c1a4
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 16 16:37:47 2007 -0700
+
+ x86 setup: in older versions of ld, ASSERT() is an expression
+
+ Older versions of ld (pre-2.15 or so) need:
+
+ . = ASSERT(foo, "msg");
+
+ instead of:
+
+ ASSERT(foo, "msg")
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 21c2b7c99c417d07015ee8e516a634ec3d98c4ee
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 16 10:52:41 2007 -0700
+
+ x86 setup: print a warning message if the bootloader gave us no heap.
+
+ If the bootloader is so old it doesn't set the CAN_USE_HEAP flag,
+ a lot of functionality will by necessity be disabled, so print a
+ warning message. This means either a 2.00 protocol bootloader or
+ a buggy bootloader; the Qemu bootloader falls in this category.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 52ca0431390d389a2a2246f02fe652ea84c1ddd8
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 16 10:51:03 2007 -0700
+
+ x86 setup: rely on a compiled-in default for load high/load low
+
+ When deciding if we should move the kernel from 0x10000 to 0x1000, as
+ is required for a zImage kernel, rely on a compiled-in default since
+ Qemu unconditionally zeroes the loadflags. This, of course, is a bug
+ in Qemu, but still...
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 4db77a97793104a32e5fb83e62b943fa144b329d
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 16 08:45:37 2007 -0700
+
+ x86 setup: correct assembly constraints.
+
+ Double use of "d" in an asm() constraints; most gcc versions correctly
+ detect and avoid using it, but some version of gcc runs itself into
+ a brick wall instead. Fix the one "d" which should have been "a".
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 4fbccbc1457d6710d3a9ce55ad70ec6cb0b75fc5
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 15 09:16:29 2007 -0700
+
+ x86 setup: include <asm/msr-index.h> not <asm/msr.h>
+
+ <asm/msr.h> brings in the accessor functions, which may potentially
+ bring in all other kinds of kernel headers which are inappropriate for
+ the setup code. For the setup code, include <asm/msr-index.h>
+ instead, which only includes the numeric constants.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 839cafa9c0020e7506722dd2a4fd82a71c2939cc
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Mon May 14 15:49:01 2007 -0700
+
+ x86 setup: protocol 2.0[01]: base for CL_OFFSET depends on setup_move_size
+
+ Handle the use of boot protocol 2.00 and 2.01: the base segment for
+ CL_OFFSET depends on the value of setup_move_size.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit d60357ad68a694b03e9b952eadba5ac277c31df0
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 12 12:18:53 2007 -0700
+
+ x86 setup: remove unused variable
+
+ Remove unused variable
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit e21a2030b01081612259847321bcce13eae1e883
+Author: Sam Ravnborg <sam@ravnborg.org>
+Date: Sat May 12 12:17:30 2007 -0700
+
+ x86 setup: share i386 Makefile with x86_64
+
+ The boot Makefile for i386 and x86_64 are equal
+ except for the CFLAGS setting.
+ Teach x86_64 to use the Makefile from i386 and
+ make CFLAGS setting arch dependent in i386 Makefile.
+
+ Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 8618d92339d0d106045f98f34833d863c3235cdb
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 12 00:32:12 2007 -0700
+
+ x86 setup: video-bios.c missed the pointer to the set_mode method!
+
+ We need the actual pointer to the set_mode method (oops!)
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 85dfc374ea9aad33b9e0315f07a4b2722dc11e3e
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 12 00:14:43 2007 -0700
+
+ x86 setup: when setting unknown BIOS modes and failing, try to revert
+
+ If we set an unknown BIOS mode and fail, then explicitly try to revert
+ to the original mode.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit f4f7949f126d2f152b09fa9367b1ec693f2ea818
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 11 11:20:59 2007 -0700
+
+ x86 setup: fix typo "video_bios" should be "video-bios"
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 51ba7113ea5b07189b7f8a0534d400a072535197
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 11 11:09:55 2007 -0700
+
+ x86 setup: allow setting VESA modes "blind"
+
+ Apparently, people really do set VESA modes "blind". As a result, make
+ the framework for settting blind modes more general, to remove some
+ special cases.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 1b8f73d9b2bf7630a2914ddab606db16fddb509e
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 10 22:08:45 2007 -0700
+
+ x86_64: CONFIG_PHYSICAL_ALIGN should be 2 MB
+
+ It's not actually used yet, but set CONFIG_PHYSICAL_ALIGN to 2 MB
+ as it should be, to prevent conflicts with other works in progress.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit b81f3c88923e4470cd0942d4596fafc0fb1cf4fd
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 10 19:11:32 2007 -0700
+
+ x86 setup: remove debugging statements
+
+ Remove debugging statements in video.c that were not meant for
+ production.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit be58b6d7e9c14e482bce495e8343955999dea77f
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 10 18:49:40 2007 -0700
+
+ x86 setup: only restore the screen image when needed
+
+ Only restore the screen image when needed. This is how the original
+ code behaves, so it's presumably the desired behaviour.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 22f6bd8cc23b512af28e34ae7d40036982a0ac63
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 10 18:44:08 2007 -0700
+
+ x86 setup: correct the definition of the GDT limit
+
+ Like all other x86 segment limits, the GDT limit points to the last byte
+ that is *permitted* to access, so it needs to be sizeof(boot_gdt)-1.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 7f73f1f4aa4c97745bffe07a3ebcf226a4965b00
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 10 15:47:48 2007 -0700
+
+ x86 setup: Re-implement scanning for hidden video modes
+
+ Re-implement scanning for hidden video modes. Every now and then,
+ apparently, you can find them hidden like easter eggs.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 6770176714bc12ec92372311ac02c14f0d22776e
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 10 15:24:27 2007 -0700
+
+ x86 setup: whitespace cleanup
+
+ Clean up stealth whitespace.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit ba0480a3537cf471b08bdb99dae6d0780cfb1972
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 9 16:54:42 2007 -0700
+
+ x86: sync the CPU feature string arrays
+
+ With <asm/cpufeature.h> unified, synchronize the CPU feature string
+ arrays. The whole kernel/cpu directory really needs to be unified.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit ecb53b84efddbad3d9aa49e95598550831324348
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 8 22:06:04 2007 -0700
+
+ x86 setup: need to set orig_video_isVGA
+
+ After detecting a VGA console, we need to set
+ boot_params.screen_info.orig_video_isVGA.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit dc97fc053faff17b984ec962686caea52bd27628
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 8 20:51:17 2007 -0700
+
+ x86 setup: boot sector should use ljmp, not jmpl
+
+ We have an "jmpl" instruction in the boot sector, which was meant
+ to be an "ljmp" instruction. It worked anyway because gas interpreted
+ a two-argument "jmpl" as an "ljmpl" instruction, however, use plain
+ "ljmp" (i.e. "ljmpw".)
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 7907f05e9692557c53c9ac13647db5e5343c7c76
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 8 20:27:10 2007 -0700
+
+ x86 setup: only make VESA graphics modes selectable if CONFIG_FB
+
+ If we select a VESA graphics mode, we better have framebuffer support
+ or the user will have no console. Therefore, make these modes
+ non-selectable if CONFIG_FB is not set.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 8e509f9ebc44f45544d231454e84f10bf78d5772
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 8 20:24:11 2007 -0700
+
+ x86 setup: need to probe VESA EDID block 0 only
+
+ The VESA EDID BIOS call takes the EDID block number in %dx, and may
+ corrupt it by spec. Pass it in properly.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 9912b9aed7943773d1fadaa2e2e52f42af395048
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Mon May 7 18:22:04 2007 -0700
+
+ x86 setup: add missing file "bitops.h" missing from previous checkins
+
+ The file "bitops.h" was missing from previous checkins.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 732eb3fac2d772980e6555b8c69902c8107c72aa
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Mon May 7 14:59:43 2007 -0700
+
+ x86 setup: add -fno-stack-protector; other Makefile fixes
+
+ Add -fno-stack-protector for the gcc's that need that;
+ Use -ffreestanding consistently;
+ Use $(LINUXINCLUDE);
+ Handle linker scripts consistently with other Makefiles.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 2d5e47f21202e156fe97aba0a88d158d5c157a33
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Mon May 7 14:45:25 2007 -0700
+
+ x86 setup: swap cpu.c and cpucheck.c; rename functions
+
+ Make cpucheck.c the reusable component; the generically-named cpu.c
+ gets to be the wrapper. Accordingly, rename functions to make it
+ less confusing.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit bf2a428a4e7c1ee3ab9acb23cfafb45e818887a1
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Mon May 7 14:09:38 2007 -0700
+
+ x86 setup: remove code moved from cpucheck.c -> cpu.c
+
+ Move all info about requirements into cpu.c.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 9ea8429fabe5df6aed6393ac3a00d0b64445ba6a
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Mon May 7 09:42:51 2007 -0700
+
+ x86 setup: remove double nesting of a20_test()
+
+ a20_test() was invoked as either a20_test() or a20_wait(), where the
+ latter was simply a loop around a loop. Make the count a parameter
+ instead; this is clearer and saves a couple of bytes.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 9edc55718f57195c664ee3175514d652f651cfd2
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Mon May 7 09:30:41 2007 -0700
+
+ x86 setup: compile with -fomit-frame-pointer
+
+ Compiling with -fomit-frame-pointer reduces the size by about 2%.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit e1003433f2d491bf17c79437cd75268da220dab5
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Mon May 7 09:30:04 2007 -0700
+
+ x86 setup: be more paranoid about the stack setup in header.S
+
+ In particular, deal correctly with the stack pointer being zero on entry.
+ While we're at it, align the stack.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 853499c3dc3fcbeb192a613ac241d150ebc7c5a0
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sun May 6 23:25:10 2007 -0700
+
+ x86 setup: Factor out the environment-independent part of the CPU check.
+
+ Factor out the environment-independent part of the CPU check so it can
+ be invoked from other parts of the kernel as well.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit f235a61f6d6dff57883efad351d746540bcb8caf
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 5 22:16:54 2007 -0700
+
+ x86 setup: when watching the setup size, take the stack into account
+
+ When watching the setup size, we have to take the stack into account.
+ In particular, the stack is used not only by the setup code itself, but
+ by BIOS interrupt handlers and system calls. Reserve a minimum of
+ 512 bytes.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 0d0e10091be48f7e4c8888e9d5c2836c704994f5
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 5 19:25:51 2007 -0700
+
+ x86 setup: actually check the end of the heap.
+
+ Keep track of where the heap ends and actually watch out for it.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 47aab0b8f4d012fad3c42b5b0754d3cb87961b37
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 5 15:47:58 2007 -0700
+
+ x86 setup: coppyright rPath, Inc.
+
+ This work was done on the dime of rPath, Inc.; they own the copyright.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit d22571534d7eabf9408f29d9da423e1c6e04445f
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 5 15:21:11 2007 -0700
+
+ x86 setup: implement screen contents save/restore
+
+ The old setup code had screen contents save and restore, so implement
+ it for the new one as well.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit e5145601a752bd998e783d159c187d3017d45d6d
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 5 15:20:19 2007 -0700
+
+ x86 setup: whitespace cleanup
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 045ecb52f91a74eecad93ffc8791eefe59cf7fd1
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 5 14:22:39 2007 -0700
+
+ x86 setup: allow setting of VESA graphics modes; cleanups
+
+ - Allow setting of VESA graphics modes (used by vesafb)
+ - Clean up the macros related to the heap
+ - #if 0 copy functions that aren't actually currently being used
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 58c04ed7e2d7d5979e1917a74b49bdc0f3dde211
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 5 12:06:14 2007 -0700
+
+ x86 setup: move all VESA-related code into video-vesa.c; add EDID
+
+ - Move all VESA-related code into video-vesa.c
+ - Add VESA EDID query support
+ - Remove some totally obsolete definitions from video.h
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 07bc3931175fb98256140275c03194426d441b74
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Sat May 5 12:04:40 2007 -0700
+
+ x86-64: remove -traditional from AFLAGS
+
+ In arch/x86_64/boot/compressed, remove -traditional from AFLAGS.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit a830f615eeef838d461cbf7bbbee8c1c84708ec8
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 18:44:38 2007 -0700
+
+ x86 setup: share code between i386 and x86-64
+
+ Share the boot (setup) code and tools between i386 and x86-64.
+ The compression code is now running in 64-bit mode in order to support
+ relocation, so do *not* share that code.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 3e159a323bdfa5d5a7be2c1f6be089ca22d598e0
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 18:43:35 2007 -0700
+
+ x86-64: use 0x1b4 as the scratch area in boot_params, not 0x3c
+
+ Use 0x1b4 as the scratch area in boot_params rather than 0x3c.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 4cf4424e7a0f29f251b781f9b5e3655b0645cb7f
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 18:26:18 2007 -0700
+
+ Revert "x86-64: Make arch/x86-64/boot a symlink to arch/i386/boot"
+
+ This reverts commit b2ad90f4969226fe8cf3edc5330711ed5fc20105.
+
+ Restore arch/x86_64/boot as a separate directory hierarchy.
+
+ Conflicts:
+
+commit 8ed1ae1d2f94410811b7cca4b1a426e37652457f
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 17:00:33 2007 -0700
+
+ x86-64: It appears MTRR isn't a required feature after all.
+
+ MTRR was documented as a required feature, but appears to boot fine
+ without it (tested since Bochs doesn't have MTRR support.)
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 7c616d098579fb790662cdc703f2a0f26ea1668c
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 16:22:57 2007 -0700
+
+ x86 setup: use 0x1e4 as scratch, instead of 0x3c
+
+ The compressed relocation needs a 4-byte scratch area to obtain
+ its own address.
+
+ 0x3c is at the end of the video area, which is quite constrained -- it
+ only has 6 bytes left (12 if we recycle the obsolete fields which invade
+ this space.) Define 0x1e4 as a scratch field, and use it.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 5bc1019227e94576e4876d05ee920f59195bce90
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 16:09:15 2007 -0700
+
+ x86 setup: boot_params.e820_map is just the map, not the count; adjust
+
+ boot_params.e820_map is just a list of entries, whereas
+ "struct e820map" contains a count as well. Thus, don't use
+ "struct e820map" to describe struct boot_params.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 0f96b52497f444be2d52d1184ca90be49f713ea3
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 15:49:03 2007 -0700
+
+ x86 setup: E820MAX is a definitional constant; no need to use sizeof hacks
+
+ Now when we're using the standard headers for the setup code, we can use
+ E820MAX instead of playing sizeof games.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 3a23a428b20cbb31fd7ff5516a053b99afc447f7
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 12:08:46 2007 -0700
+
+ x86: move the bootparam structure definition into include/
+
+ Move the bootparam structure definition into include/, and make other
+ things use it. Haven't cleaned up all the macros yet, though.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit e93ec58911995971aa059990f8a91a02b05f6c8f
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 12:07:50 2007 -0700
+
+ i386: change %lu to %u in arch/i386/kernel/e820.h
+
+ It's an u32, print it with %u
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 2f47f004f614e2744867c0df274c55d8af2a42d5
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 12:06:04 2007 -0700
+
+ x86: fix differences between i386 and x86-64 <asm/e820.h>
+
+ Fix minor differences between i386 and x86-64 <asm/e820.h>
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 56ec52f14e948f430af941052adee98019a617b7
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 11:45:17 2007 -0700
+
+ x86: fix the definition of struct screen_info
+
+ Name the fields that aren't really struct screen_info, and declare
+ the structure packed (the "capabilities" field is misaligned.)
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 1d4429eaa564b0085d9ee3aa2de57e87a093a14e
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 11:43:10 2007 -0700
+
+ x86-64: Make arch/x86-64/boot a symlink to arch/i386/boot
+
+ Until such time that Kbuild allows for a cleaner solution, make
+ arch/x86-64/boot a symlink to arch/i386/boot.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 6a85f1b5fd041ea99d8604782559ce0502a60cc0
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 10:42:06 2007 -0700
+
+ x86-64: rearrange includes due to unifications and inclusion from setup
+
+ Unification caused a circular dependency between <asm/alternative.h>
+ and <asm/cpufeature.h>; resolve this.
+
+ Add #ifndef _SETUP in <asm/e820.h> so it can be included from the boot
+ code.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit f6bbdc254bdbd5f7cf7a40c4cd6f9844af90824a
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 10:40:26 2007 -0700
+
+ x86: Complete <asm/cpufeature.h> with the union of i386 and x86-64
+
+ Add a feature to <asm/cpufeature.h> which was previously present
+ in x86-64 but missing in i386.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 1a0819281060489901732914f67869e0aa8f26fd
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 10:39:32 2007 -0700
+
+ x86: unify <asm/boot.h>
+
+ Unify <asm/boot.h> between i386 and x86-64
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 8d9c54585f4623e0310f970fb5c6eda7ec1614df
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 10:38:35 2007 -0700
+
+ x86-64: verify_cpu.S: use new masks
+
+ Use the <asm/required-features.h> masks.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 6cf3308646bb7a3210f0f76bcb895b2dea76a93c
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 10:37:26 2007 -0700
+
+ x86-64: fix compilation errors due to required-features.h change
+
+ Fix compilation errors induced by required-features.h change.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 1324201a93ce380b46a3128826ecbd794e617e59
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 10:35:37 2007 -0700
+
+ x86-64: <asm/segment.h>: add boot segment descriptors
+
+ Add boot segment descriptors to <asm/segment.h> to match i386.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit a0b15a9e79ed0310813709cd0690d6838917fe82
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 10:34:37 2007 -0700
+
+ x86-64: add CONFIG_PHYSICAL_ALIGN to match i386
+
+ Add CONFIG_PHYSICAL_ALIGN to match i386, even though we don't use it.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 8f5d14d11a7318e257351ae477392c7f7e314602
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 10:33:54 2007 -0700
+
+ x86 setup: cleanups for compatibility with x86-64
+
+ These changes are necessary to compile on x86-64.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit a32f68b6d4023c1c6b1e62e8561189516c571ab9
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Fri May 4 08:40:07 2007 -0700
+
+ x86 setup: add missing linker script
+
+ Add linker script for the setup code, apparently missing from previous
+ checkins.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 4f34ca8e926b2d0bf3a7502b99f8dfced8cdba9d
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 3 17:42:29 2007 -0700
+
+ x86 setup: paranoia: clear the high half of %esp
+
+ We're invoked in 16-bit mode from an unknown bootloader. Make sure
+ we explicitly zero the upper half of %esp to avoid nasty surprises.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 19eb9b73cc1632a923003a002108b242af7a6080
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 3 17:35:41 2007 -0700
+
+ x86 setup: bootlin is *so* dead...
+
+ Bootlin was never able to load bzImage kernels, so who cares about it.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 3b9fb73c65151ee043bc74c333d9e3c9b1872125
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 3 10:56:40 2007 -0700
+
+ x86 setup: apparently $(src) is insufficient, needs $(srctree)/$(src)
+
+ For some unfanthomable reason the location of the source tree that
+ corresponds to the current directory has to be written as
+ $(srctree)/$(src) apparently. There might be a good reason for it,
+ but shorthand would be appreciated, and $(src) really should be the
+ short form.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit a6d01d375a2269be1e3a6b31bcc4d426ad5a473d
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 3 10:51:45 2007 -0700
+
+ x86 setup: remove reference to obsolete cpureq.c
+
+ cpureq.c has been removed; remove it from the Makefile too.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit cbe5b7585d800435080bcbf1b1fd242926982674
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 3 10:33:12 2007 -0700
+
+ x86 setup: use the required masks from <asm/required-features.h>
+
+ Use the now-uniform features from <asm/required-features.h>.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 99ed30180ecc1bb4e93f6edda5f6bad1adf3e630
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 3 10:31:12 2007 -0700
+
+ x86: make the handling of required features consistent
+
+ Make the handling of required features consistent between i386
+ and x86-64.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 1120d70a2be8f2deb6bda64047da288d8f86dad3
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 3 00:09:53 2007 -0700
+
+ x86: Kconfig.cpu: the minimum CPU model is always 3; WP_WORKS_OK = i486
+
+ The minimum CPU model number is always 3 (i386), and if we have
+ WP_WORKS_OK it means we need an i486.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit ebc308c204149b86984ae2216f5b9b2e63932028
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Thu May 3 00:08:48 2007 -0700
+
+ x86 setup: use CONFIG_X86_MINIMUM_CPU_MODEL
+
+ Use CONFIG_X86_MINIMUM_CPU_MODEL as defined in Kconfig.cpu.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 8b50b640e015bf5d0f65502437da6fcab46c391b
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 23:45:42 2007 -0700
+
+ x86 setup: remove bogus "static"
+
+ Remove invalid "static" declarations in cpu.c
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 35d23b60dfb110da81c24bcbfcda089cfc4fd264
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 23:37:50 2007 -0700
+
+ x86 setup: cpu detection cleanups
+
+ - Use <asm/processor-flags.h>
+ - Make sure %cr0 isn't in a dangerous configuration before probing the FPU
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit a1150a03247b355d11a4bb696b8aae1f46612992
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 23:36:55 2007 -0700
+
+ x86 setup: compile with -DSETUP
+
+ Define SETUP to make it easier to share code with the rest of the kernel.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 7eb52e8ad1bdf01886023d1a13b3313084cd7db6
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 23:34:57 2007 -0700
+
+ x86 setup: remove unused verify_cpu.S
+
+ verify_cpu.S is obsoleted by boot/cpu.c.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit e90317a027c30176968220d18eb18bd6a9d9cc74
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 20:07:43 2007 -0700
+
+ x86 setup: files missing from previous checkin (cpu.c, cpureq.c)
+
+ These files were missing from a previous checkin; CPU feature-checking
+ code and the list of CPU features to check for.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 060f9b3db33c67b5344b2b4110bc823eb776e5cd
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 19:51:34 2007 -0700
+
+ x86 setup: whitespace cleanup
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 9f997a5569ec8fceaa15c2e9cf28e728e2ce118d
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 19:07:14 2007 -0700
+
+ x86 setup: add CPU feature detect/abort on insufficient featurage
+
+ The x86 setup is the right place to check features and abort if they
+ are not present, since we can still get a message to the user via the
+ firmware.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit de4e976376fddec340651ef40b16a45f6189619d
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 19:05:34 2007 -0700
+
+ x86 setup: whitespace cleanup
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit bcd2d2f8de5d4568b6628aa133fce1ac40ece526
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 16:19:59 2007 -0700
+
+ x86 setup: tag functions noreturn; error message on A20 failure
+
+ Tag appropriate functions noreturn.
+ If the A20 gate fails, output an error message and refuse to boot.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 752aef90cbfc888084bf11fd83f8f72b6a668fc9
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 15:45:08 2007 -0700
+
+ x86 setup: clobber registers in keyboard BIOS call
+
+ Keyboard BIOS call to set repeat rate is known to clobber registers on
+ "many" BIOSes.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit dde94003e4759aab275732cf9f1834440cd381d0
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 15:44:21 2007 -0700
+
+ x86 setup: implement APM BIOS probe
+
+ APM BIOS probe ported from assembly
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 9403917d79e3349184318704476fa080836bd52c
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 15:17:14 2007 -0700
+
+ x86 setup: remove references to obsolete probes
+
+ Remove "Hello, World!" as well as references to probes which are no
+ longer used...
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 712f65ffbd1d4b55b4c55d68b4dcd32406c28fb8
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 12:17:15 2007 -0700
+
+ x86 setup: video.c: correct the handling of special mode numbers
+
+ Special mode numbers with the high bit set need to be handled *before*
+ masking out the high bit.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 9cf083204fe14cda3b09840eba8d131d2e48ccdf
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 11:44:16 2007 -0700
+
+ x86 setup: Modern ATI cards pass the probe but lacks the modes.
+
+ It appears modern ATI cards pass the probe for ATI-ness but lack the
+ modes. Kill off the driver as being incorrect.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 890cbe950589e30af17eac9da800efc76e35e01d
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 11:32:21 2007 -0700
+
+ x86 setup: a20.c: make empty_8042() return status
+
+ Make functions which could reasonably return status do so. It may
+ be relevant in the future, and it's a lot better if the programmer
+ doesn't have to figure out where everything should hook in.
+
+ Just on principle.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 08a44dc655e0086d23fc3c70cb93eb51eaeec259
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 11:31:03 2007 -0700
+
+ x86 setup: video.c: clean up unused stuff
+
+ Clean up unused variables that we have no intent on using, as well
+ as other cruft.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 57e69acff1f577de430cae1523fd49a5d113e885
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 11:18:13 2007 -0700
+
+ x86 setup: drop video mode range checking
+
+ Drop video mode range checking. If someone really has, say, 12x40 mode
+ visible through the BIOS then allow them to select it... odds are low
+ that it will actually conflict with the very sparse allocation we have
+ anyway.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit c0dda0b90f92d43872d55d295630a71cd357cfa6
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 11:15:53 2007 -0700
+
+ x86 setup: if no specific video mode ID is given, generate one
+
+ If we don't specify a certain video mode ID in the driver, then
+ generate the 0xRRCC mode ID automatically.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 0db5086e79810e7c5d560006b1c9a7501a02d80c
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 11:10:28 2007 -0700
+
+ x86 setup: Sadly, Cirrus removed extended text modes from their BIOS.
+
+ In the later era of the Cirrus 54xx series, Cirrus removed extended text
+ modes from their BIOS. Neither Qemu nor Bochs implement them in the BIOS.
+ If we can find a direct-register-poking method of setting them that
+ works in Bochs/Qemu it might be worthwhile to resurrect this; the probing
+ routine *does* work.
+
+ Of course, the Right Thing[TM] would be to submit such a routine to the
+ Bochs/Qemu BIOS as a VESA text mode.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 41f3fddeeb764687bf3fb0cf77fd858128571d58
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Wed May 2 10:18:07 2007 -0700
+
+ x86 setup: remove assembly implementation of putchar and puts
+
+ Already unused, remove assembly implementation of putchar and puts.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit dfa94cd86aca2c01d2f5e14b6e7c3e8258276195
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 1 21:41:28 2007 -0700
+
+ x86 setup: Call INT 15h AX=E820h properly
+
+ The calling convention for BIOS call 15:E820 was messed up.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 2487575a36435c0a983febbb4f3751331bd2df7a
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 1 21:34:12 2007 -0700
+
+ x86 setup: advance one e820 descriptor at a time...
+
+ Adding sizeof(foo) to a foo * is not just useless, it's pretty damaging...
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 530d4f4f1732335ae8725c0b8c332a618e63ea1d
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 1 21:33:28 2007 -0700
+
+ x86 setup: fix memcmp_[fg]s()
+
+ Actually return a value from memcmp_[fg]s()...
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 8617cd56ff2e43303147da012b26c9dd46af726e
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 1 21:32:47 2007 -0700
+
+ x86 setup: fix missing semicolon in video-ati.c
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 7bbf7fa3e199b9cef4877c5a56128faff8636cc9
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 1 21:26:48 2007 -0700
+
+ x86 setup: make the video setup code actually do something...
+
+ Basic video setup now works (there is still work to be done, however.)
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 45bcd4406e4b812b32d317d9b3b8db2e5f135a3c
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 1 21:25:20 2007 -0700
+
+ x86 setup: segment descriptors need to be Present
+
+ The segment descriptors were missing the Present bit.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit a39479d4ccf4dceffb623ad2ec7e2d708c38c637
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 1 21:24:32 2007 -0700
+
+ build: setup sectors doesn't include the boot sector
+
+ The "setup sectors" field doesn't include the old boot sector,
+ even though the two are now one module.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit d8f3d4928ead72e8febe2fcd740d0fee71a61f42
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 1 21:23:44 2007 -0700
+
+ x86 setup: in tty.c, actually tell it what character to print
+
+ putchar() was missing the actual passing of the character code to the
+ BIOS call, with very silly-looking results.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 4f1462ed0377e180484a223e622d62432baa64b7
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Tue May 1 21:22:46 2007 -0700
+
+ x86 setup: printf.c needs code16gcc.h
+
+ printf.c was missing code16gcc.h, with predictable consequences.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit a5ba7e6df198bd204b0f87fc6e3f68388b9d14c1
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Mon Apr 30 20:56:42 2007 -0700
+
+ MAINTAINERS: formally take responsibility for the i386 boot code
+
+ Change MAINTAINERS to formally take responsibility for the i386 boot code.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+
+commit 6c821fc005655a99eff6e86c2e4b13654de94dea
+Author: H. Peter Anvin <hpa@zytor.com>
+Date: Mon Apr 30 20:54:07 2007 -0700
+
+ x86 setup code rewrite: initial development snapshot
+
+ Clean up the setup code and rewrite it in C.
+ This is an initial development snapshot, not a working tree.
+
+ Signed-off-by: H. Peter Anvin <hpa@zytor.com>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+---
+
+ MAINTAINERS | 4
+ arch/i386/Kconfig.cpu | 4
+ arch/i386/boot/Makefile | 45
+ arch/i386/boot/a20.c | 161 +
+ arch/i386/boot/apm.c | 97
+ arch/i386/boot/bitops.h | 45
+ arch/i386/boot/boot.h | 290 ++
+ arch/i386/boot/bootsect.S | 98
+ arch/i386/boot/cmdline.c | 97
+ arch/i386/boot/code16gcc.h | 9
+ arch/i386/boot/compressed/Makefile | 7
+ arch/i386/boot/compressed/head.S | 6
+ arch/i386/boot/compressed/misc.c | 3
+ arch/i386/boot/copy.S | 101
+ arch/i386/boot/cpu.c | 69
+ arch/i386/boot/cpucheck.c | 266 ++
+ arch/i386/boot/edd.S | 231 --
+ arch/i386/boot/edd.c | 196 +
+ arch/i386/boot/header.S | 283 ++
+ arch/i386/boot/main.c | 161 +
+ arch/i386/boot/mca.c | 43
+ arch/i386/boot/memory.c | 99
+ arch/i386/boot/pm.c | 170 +
+ arch/i386/boot/pmjump.S | 54
+ arch/i386/boot/printf.c | 331 ++
+ arch/i386/boot/setup.S | 1075 ---------
+ arch/i386/boot/setup.ld | 54
+ arch/i386/boot/string.c | 34
+ arch/i386/boot/tools/build.c | 156 -
+ arch/i386/boot/tty.c | 112
+ arch/i386/boot/version.c | 23
+ arch/i386/boot/vesa.h | 79
+ arch/i386/boot/video-bios.c | 125 +
+ arch/i386/boot/video-vesa.c | 283 ++
+ arch/i386/boot/video-vga.c | 260 ++
+ arch/i386/boot/video.S | 2043 ------------------
+ arch/i386/boot/video.c | 456 ++++
+ arch/i386/boot/video.h | 145 +
+ arch/i386/boot/voyager.c | 46
+ arch/i386/kernel/cpu/addon_cpuid_features.c | 50
+ arch/i386/kernel/cpu/common.c | 2
+ arch/i386/kernel/cpu/proc.c | 21
+ arch/i386/kernel/e820.c | 2
+ arch/i386/kernel/setup.c | 12
+ arch/i386/kernel/verify_cpu.S | 94
+ arch/x86_64/Kconfig | 4
+ arch/x86_64/boot/Makefile | 136 -
+ arch/x86_64/boot/bootsect.S | 98
+ arch/x86_64/boot/compressed/Makefile | 9
+ arch/x86_64/boot/compressed/head.S | 6
+ arch/x86_64/boot/install.sh | 2
+ arch/x86_64/boot/mtools.conf.in | 17
+ arch/x86_64/boot/setup.S | 826 -------
+ arch/x86_64/boot/tools/build.c | 185 -
+ arch/x86_64/kernel/Makefile | 2
+ arch/x86_64/kernel/setup.c | 21
+ arch/x86_64/kernel/verify_cpu.S | 22
+ drivers/ide/legacy/hd.c | 73
+ include/asm-i386/boot.h | 6
+ include/asm-i386/bootparam.h | 85
+ include/asm-i386/cpufeature.h | 26
+ include/asm-i386/e820.h | 14
+ include/asm-i386/processor.h | 1
+ include/asm-i386/required-features.h | 37
+ include/asm-i386/setup.h | 10
+ include/asm-x86_64/alternative.h | 68
+ include/asm-x86_64/boot.h | 16
+ include/asm-x86_64/bootparam.h | 1
+ include/asm-x86_64/cpufeature.h | 115 -
+ include/asm-x86_64/e820.h | 6
+ include/asm-x86_64/processor.h | 3
+ include/asm-x86_64/required-features.h | 46
+ include/asm-x86_64/segment.h | 8
+ include/linux/edd.h | 4
+ include/linux/screen_info.h | 9
+ 75 files changed, 4594 insertions(+), 5204 deletions(-)
+
+diff -puN MAINTAINERS~git-newsetup MAINTAINERS
+--- a/MAINTAINERS~git-newsetup
++++ a/MAINTAINERS
+@@ -1774,8 +1774,8 @@ T: http://www.harbaum.org/till/i2c_tiny_
+ S: Maintained
+
+ i386 BOOT CODE
+-P: Riley H. Williams
+-M: Riley@Williams.Name
++P: H. Peter Anvin
++M: hpa@zytor.com
+ L: Linux-Kernel@vger.kernel.org
+ S: Maintained
+
+diff -puN arch/i386/Kconfig.cpu~git-newsetup arch/i386/Kconfig.cpu
+--- a/arch/i386/Kconfig.cpu~git-newsetup
++++ a/arch/i386/Kconfig.cpu
+@@ -346,6 +346,6 @@ config X86_CMOV
+
+ config X86_MINIMUM_CPU_MODEL
+ int
+- default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP
+- default "0"
++ default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK
++ default "3"
+
+diff -puN arch/i386/boot/Makefile~git-newsetup arch/i386/boot/Makefile
+--- a/arch/i386/boot/Makefile~git-newsetup
++++ a/arch/i386/boot/Makefile
+@@ -25,27 +25,53 @@ SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
+
+ #RAMDISK := -DRAMDISK=512
+
+-targets := vmlinux.bin bootsect bootsect.o \
+- setup setup.o zImage bzImage
++targets := vmlinux.bin setup.bin setup.elf zImage bzImage
+ subdir- := compressed
+
++setup-y += a20.o apm.o cmdline.o copy.o cpu.o cpucheck.o edd.o
++setup-y += header.o main.o mca.o memory.o pm.o pmjump.o
++setup-y += printf.o string.o tty.o video.o version.o voyager.o
++
++# The link order of the video-*.o modules can matter. In particular,
++# video-vga.o *must* be listed first, followed by video-vesa.o.
++# Hardware-specific drivers should follow in the order they should be
++# probed, and video-bios.o should typically be last.
++setup-y += video-vga.o
++setup-y += video-vesa.o
++setup-y += video-bios.o
++
+ hostprogs-y := tools/build
+
+ HOSTCFLAGS_build.o := $(LINUXINCLUDE)
+
+ # ---------------------------------------------------------------------------
+
++# How to compile the 16-bit code. Note we always compile for -march=i386,
++# that way we can complain to the user if the CPU is insufficient.
++cflags-i386 :=
++cflags-x86_64 := -m32
++CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
++ $(cflags-$(ARCH)) \
++ -Wall -Wstrict-prototypes \
++ -march=i386 -mregparm=3 \
++ -include $(srctree)/$(src)/code16gcc.h \
++ -fno-strict-aliasing -fomit-frame-pointer \
++ $(call cc-option, -ffreestanding) \
++ $(call cc-option, -fno-stack-protector)
++AFLAGS := $(CFLAGS) -D__ASSEMBLY__
++
+ $(obj)/zImage: IMAGE_OFFSET := 0x1000
+ $(obj)/zImage: EXTRA_AFLAGS := $(SVGA_MODE) $(RAMDISK)
+ $(obj)/bzImage: IMAGE_OFFSET := 0x100000
++$(obj)/bzImage: EXTRA_CFLAGS := -D__BIG_KERNEL__
+ $(obj)/bzImage: EXTRA_AFLAGS := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__
+ $(obj)/bzImage: BUILDFLAGS := -b
+
+ quiet_cmd_image = BUILD $@
+-cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/bootsect $(obj)/setup \
++cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/setup.bin \
+ $(obj)/vmlinux.bin $(ROOT_DEV) > $@
+
+-$(obj)/zImage $(obj)/bzImage: $(obj)/bootsect $(obj)/setup \
++$(obj)/zImage $(obj)/bzImage: $(obj)/setup.bin \
+ $(obj)/vmlinux.bin $(obj)/tools/build FORCE
+ $(call if_changed,image)
+ @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
+@@ -53,12 +79,17 @@ $(obj)/zImage $(obj)/bzImage: $(obj)/boo
+ $(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
+ $(call if_changed,objcopy)
+
+-LDFLAGS_bootsect := -Ttext 0x0 -s --oformat binary
+-LDFLAGS_setup := -Ttext 0x0 -s --oformat binary -e begtext
++SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
+
+-$(obj)/setup $(obj)/bootsect: %: %.o FORCE
++LDFLAGS_setup.elf := -T
++$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
+ $(call if_changed,ld)
+
++OBJCOPYFLAGS_setup.bin := -O binary
++
++$(obj)/setup.bin: $(obj)/setup.elf FORCE
++ $(call if_changed,objcopy)
++
+ $(obj)/compressed/vmlinux: FORCE
+ $(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
+
+diff -puN /dev/null arch/i386/boot/a20.c
+--- /dev/null
++++ a/arch/i386/boot/a20.c
+@@ -0,0 +1,161 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/a20.c
++ *
++ * Enable A20 gate (return -1 on failure)
++ */
++
++#include "boot.h"
++
++#define MAX_8042_LOOPS 100000
++
++static int empty_8042(void)
++{
++ u8 status;
++ int loops = MAX_8042_LOOPS;
++
++ while (loops--) {
++ io_delay();
++
++ status = inb(0x64);
++ if (status & 1) {
++ /* Read and discard input data */
++ io_delay();
++ (void)inb(0x60);
++ } else if (!(status & 2)) {
++ /* Buffers empty, finished! */
++ return 0;
++ }
++ }
++
++ return -1;
++}
++
++/* Returns nonzero if the A20 line is enabled. The memory address
++ used as a test is the int $0x80 vector, which should be safe. */
++
++#define A20_TEST_ADDR (4*0x80)
++#define A20_TEST_SHORT 32
++#define A20_TEST_LONG 2097152 /* 2^21 */
++
++static int a20_test(int loops)
++{
++ int ok = 0;
++ int saved, ctr;
++
++ set_fs(0x0000);
++ set_gs(0xffff);
++
++ saved = ctr = rdfs32(A20_TEST_ADDR);
++
++ while (loops--) {
++ wrfs32(++ctr, A20_TEST_ADDR);
++ io_delay(); /* Serialize and make delay constant */
++ ok = rdgs32(A20_TEST_ADDR+0x10) ^ ctr;
++ if (ok)
++ break;
++ }
++
++ wrfs32(saved, A20_TEST_ADDR);
++ return ok;
++}
++
++/* Quick test to see if A20 is already enabled */
++static int a20_test_short(void)
++{
++ return a20_test(A20_TEST_SHORT);
++}
++
++/* Longer test that actually waits for A20 to come on line; this
++ is useful when dealing with the KBC or other slow external circuitry. */
++static int a20_test_long(void)
++{
++ return a20_test(A20_TEST_LONG);
++}
++
++static void enable_a20_bios(void)
++{
++ asm volatile("pushfl; int $0x15; popfl"
++ : : "a" ((u16)0x2401));
++}
++
++static void enable_a20_kbc(void)
++{
++ empty_8042();
++
++ outb(0xd1, 0x64); /* Command write */
++ empty_8042();
++
++ outb(0xdf, 0x60); /* A20 on */
++ empty_8042();
++}
++
++static void enable_a20_fast(void)
++{
++ u8 port_a;
++
++ port_a = inb(0x92); /* Configuration port A */
++ port_a |= 0x02; /* Enable A20 */
++ port_a &= ~0x01; /* Do not reset machine */
++ outb(port_a, 0x92);
++}
++
++/*
++ * Actual routine to enable A20; return 0 on ok, -1 on failure
++ */
++
++#define A20_ENABLE_LOOPS 255 /* Number of times to try */
++
++int enable_a20(void)
++{
++ int loops = A20_ENABLE_LOOPS;
++
++#if defined(CONFIG_X86_ELAN)
++ /* Elan croaks if we try to touch the KBC */
++ enable_a20_fast();
++ while (!a20_test_long())
++ ;
++ return 0;
++#elif defined(CONFIG_X86_VOYAGER)
++ /* On Voyager, a20_test() is unsafe? */
++ enable_a20_kbc();
++ return 0;
++#else
++ while (loops--) {
++ /* First, check to see if A20 is already enabled
++ (legacy free, etc.) */
++ if (a20_test_short())
++ return 0;
++
++ /* Next, try the BIOS (INT 0x15, AX=0x2401) */
++ enable_a20_bios();
++ if (a20_test_short())
++ return 0;
++
++ /* Try enabling A20 through the keyboard controller */
++ empty_8042();
++ if (a20_test_short())
++ return 0; /* BIOS worked, but with delayed reaction */
++
++ enable_a20_kbc();
++ if (a20_test_long())
++ return 0;
++
++ /* Finally, try enabling the "fast A20 gate" */
++ enable_a20_fast();
++ if (a20_test_long())
++ return 0;
++ }
++
++ return -1;
++#endif
++}
+diff -puN /dev/null arch/i386/boot/apm.c
+--- /dev/null
++++ a/arch/i386/boot/apm.c
+@@ -0,0 +1,97 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * Original APM BIOS checking by Stephen Rothwell, May 1994
++ * (sfr@canb.auug.org.au)
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/apm.c
++ *
++ * Get APM BIOS information
++ */
++
++#include "boot.h"
++
++#if defined(CONFIG_APM) || defined(CONFIG_APM_MODULE)
++
++int query_apm_bios(void)
++{
++ u16 ax, bx, cx, dx, di;
++ u32 ebx, esi;
++ u8 err;
++
++ /* APM BIOS installation check */
++ ax = 0x5300;
++ bx = cx = 0;
++ asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp ; setc %0"
++ : "=d" (err), "+a" (ax), "+b" (bx), "+c" (cx)
++ : : "esi", "edi");
++
++ if (err)
++ return -1; /* No APM BIOS */
++
++ if (bx != 0x504d) /* "PM" signature */
++ return -1;
++
++ if (cx & 0x02) /* 32 bits supported? */
++ return -1;
++
++ /* Disconnect first, just in case */
++ ax = 0x5304;
++ asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp"
++ : "+a" (ax)
++ : : "ebx", "ecx", "edx", "esi", "edi");
++
++ /* Paranoia */
++ ebx = esi = 0;
++ cx = dx = di = 0;
++
++ /* 32-bit connect */
++ asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp ; setc %6"
++ : "=a" (ax), "+b" (ebx), "+c" (cx), "+d" (dx),
++ "+S" (esi), "+D" (di), "=m" (err)
++ : "a" (0x5303));
++
++ boot_params.apm_bios_info.cseg = ax;
++ boot_params.apm_bios_info.offset = ebx;
++ boot_params.apm_bios_info.cseg_16 = cx;
++ boot_params.apm_bios_info.dseg = dx;
++ boot_params.apm_bios_info.cseg_len = (u16)esi;
++ boot_params.apm_bios_info.cseg_16_len = esi >> 16;
++ boot_params.apm_bios_info.dseg_len = di;
++
++ if (err)
++ return -1;
++
++ /* Redo the installation check as the 32-bit connect;
++ some BIOSes return different flags this way... */
++
++ ax = 0x5300;
++ bx = cx = 0;
++ asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp ; setc %0"
++ : "=d" (err), "+a" (ax), "+b" (bx), "+c" (cx)
++ : : "esi", "edi");
++
++ if (err || bx != 0x504d) {
++ /* Failure with 32-bit connect, try to disconect and ignore */
++ ax = 0x5304;
++ bx = 0;
++ asm volatile("pushl %%ebp ; int $0x15 ; popl %%ebp"
++ : "+a" (ax), "+b" (bx)
++ : : "ecx", "edx", "esi", "edi");
++ return -1;
++ }
++
++ boot_params.apm_bios_info.version = ax;
++ boot_params.apm_bios_info.flags = cx;
++ return 0;
++}
++
++#endif
+diff -puN /dev/null arch/i386/boot/bitops.h
+--- /dev/null
++++ a/arch/i386/boot/bitops.h
+@@ -0,0 +1,45 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/bitops.h
++ *
++ * Very simple bitops for the boot code.
++ */
++
++#ifndef BOOT_BITOPS_H
++#define BOOT_BITOPS_H
++#define _LINUX_BITOPS_H /* Inhibit inclusion of <linux/bitops.h> */
++
++static inline int constant_test_bit(int nr, const void *addr)
++{
++ const u32 *p = (const u32 *)addr;
++ return ((1UL << (nr & 31)) & (p[nr >> 5])) != 0;
++}
++static inline int variable_test_bit(int nr, const void *addr)
++{
++ u8 v;
++ const u32 *p = (const u32 *)addr;
++
++ asm("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr));
++ return v;
++}
++
++#define test_bit(nr,addr) \
++(__builtin_constant_p(nr) ? \
++ constant_test_bit((nr),(addr)) : \
++ variable_test_bit((nr),(addr)))
++
++static inline void set_bit(int nr, void *addr)
++{
++ asm("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr));
++}
++
++#endif /* BOOT_BITOPS_H */
+diff -puN /dev/null arch/i386/boot/boot.h
+--- /dev/null
++++ a/arch/i386/boot/boot.h
+@@ -0,0 +1,290 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/boot.h
++ *
++ * Header file for the real-mode kernel code
++ */
++
++#ifndef BOOT_BOOT_H
++#define BOOT_BOOT_H
++
++#ifndef __ASSEMBLY__
++
++#include <stdarg.h>
++#include <linux/types.h>
++#include <linux/edd.h>
++#include <asm/boot.h>
++#include <asm/bootparam.h>
++
++/* Useful macros */
++#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
++
++extern struct setup_header hdr;
++extern struct boot_params boot_params;
++
++/* Basic port I/O */
++static inline void outb(u8 v, u16 port)
++{
++ asm volatile("outb %0,%1" : : "a" (v), "dN" (port));
++}
++static inline u8 inb(u16 port)
++{
++ u8 v;
++ asm volatile("inb %1,%0" : "=a" (v) : "dN" (port));
++ return v;
++}
++
++static inline void outw(u16 v, u16 port)
++{
++ asm volatile("outw %0,%1" : : "a" (v), "dN" (port));
++}
++static inline u16 inw(u16 port)
++{
++ u16 v;
++ asm volatile("inw %1,%0" : "=a" (v) : "dN" (port));
++ return v;
++}
++
++static inline void outl(u32 v, u16 port)
++{
++ asm volatile("outl %0,%1" : : "a" (v), "dn" (port));
++}
++static inline u32 inl(u32 port)
++{
++ u32 v;
++ asm volatile("inl %1,%0" : "=a" (v) : "dN" (port));
++ return v;
++}
++
++static inline void io_delay(void)
++{
++ const u16 DELAY_PORT = 0x80;
++ asm volatile("outb %%al,%0" : : "dN" (DELAY_PORT));
++}
++
++/* These functions are used to reference data in other segments. */
++
++static inline u16 ds(void)
++{
++ u16 seg;
++ asm("movw %%ds,%0" : "=rm" (seg));
++ return seg;
++}
++
++static inline void set_fs(u16 seg)
++{
++ asm volatile("movw %0,%%fs" : : "rm" (seg));
++}
++static inline u16 fs(void)
++{
++ u16 seg;
++ asm("movw %%fs,%0" : "=rm" (seg));
++ return seg;
++}
++
++static inline void set_gs(u16 seg)
++{
++ asm volatile("movw %0,%%gs" : : "rm" (seg));
++}
++static inline u16 gs(void)
++{
++ u16 seg;
++ asm("movw %%gs,%0" : "=rm" (seg));
++ return seg;
++}
++
++typedef unsigned int addr_t;
++
++static inline u8 rdfs8(addr_t addr)
++{
++ u8 v;
++ asm("movb %%fs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
++ return v;
++}
++static inline u16 rdfs16(addr_t addr)
++{
++ u16 v;
++ asm("movw %%fs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
++ return v;
++}
++static inline u32 rdfs32(addr_t addr)
++{
++ u32 v;
++ asm("movl %%fs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
++ return v;
++}
++
++static inline void wrfs8(u8 v, addr_t addr)
++{
++ asm volatile("movb %1,%%fs:%0" : "+m" (*(u8 *)addr) : "r" (v));
++}
++static inline void wrfs16(u16 v, addr_t addr)
++{
++ asm volatile("movw %1,%%fs:%0" : "+m" (*(u16 *)addr) : "r" (v));
++}
++static inline void wrfs32(u32 v, addr_t addr)
++{
++ asm volatile("movl %1,%%fs:%0" : "+m" (*(u32 *)addr) : "r" (v));
++}
++
++static inline u8 rdgs8(addr_t addr)
++{
++ u8 v;
++ asm("movb %%gs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
++ return v;
++}
++static inline u16 rdgs16(addr_t addr)
++{
++ u16 v;
++ asm("movw %%gs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
++ return v;
++}
++static inline u32 rdgs32(addr_t addr)
++{
++ u32 v;
++ asm("movl %%gs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
++ return v;
++}
++
++static inline void wrgs8(u8 v, addr_t addr)
++{
++ asm volatile("movb %1,%%gs:%0" : "+m" (*(u8 *)addr) : "r" (v));
++}
++static inline void wrgs16(u16 v, addr_t addr)
++{
++ asm volatile("movw %1,%%gs:%0" : "+m" (*(u16 *)addr) : "r" (v));
++}
++static inline void wrgs32(u32 v, addr_t addr)
++{
++ asm volatile("movl %1,%%gs:%0" : "+m" (*(u32 *)addr) : "r" (v));
++}
++
++/* Note: these only return true/false, not a signed return value! */
++static inline int memcmp(const void *s1, const void *s2, size_t len)
++{
++ u8 diff;
++ asm("repe; cmpsb; setnz %0"
++ : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
++ return diff;
++}
++
++static inline int memcmp_fs(const void *s1, addr_t s2, size_t len)
++{
++ u8 diff;
++ asm("fs; repe; cmpsb; setnz %0"
++ : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
++ return diff;
++}
++static inline int memcmp_gs(const void *s1, addr_t s2, size_t len)
++{
++ u8 diff;
++ asm("gs; repe; cmpsb; setnz %0"
++ : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
++ return diff;
++}
++
++/* Heap -- available for dynamic lists. */
++#define STACK_SIZE 512 /* Minimum number of bytes for stack */
++
++extern char _end[];
++extern char *HEAP;
++extern char *heap_end;
++#define RESET_HEAP() ((void *)( HEAP = _end ))
++static inline char *__get_heap(size_t s, size_t a, size_t n)
++{
++ char *tmp;
++
++ HEAP = (char *)(((size_t)HEAP+(a-1)) & ~(a-1));
++ tmp = HEAP;
++ HEAP += s*n;
++ return tmp;
++}
++#define GET_HEAP(type, n) \
++ ((type *)__get_heap(sizeof(type),__alignof__(type),(n)))
++
++static inline int heap_free(void)
++{
++ return heap_end-HEAP;
++}
++
++/* copy.S */
++
++void copy_to_fs(addr_t dst, void *src, size_t len);
++void *copy_from_fs(void *dst, addr_t src, size_t len);
++void copy_to_gs(addr_t dst, void *src, size_t len);
++void *copy_from_gs(void *dst, addr_t src, size_t len);
++void *memcpy(void *dst, void *src, size_t len);
++void *memset(void *dst, int c, size_t len);
++
++#define memcpy(d,s,l) __builtin_memcpy(d,s,l)
++#define memset(d,c,l) __builtin_memset(d,c,l)
++
++/* a20.c */
++int enable_a20(void);
++
++/* apm.c */
++int query_apm_bios(void);
++
++/* cmdline.c */
++int cmdline_find_option(const char *option, char *buffer, int bufsize);
++
++/* cpu.c, cpucheck.c */
++int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr);
++int validate_cpu(void);
++
++/* edd.c */
++void query_edd(void);
++
++/* header.S */
++void __attribute__((noreturn)) die(void);
++
++/* mca.c */
++int query_mca(void);
++
++/* memory.c */
++int detect_memory(void);
++
++/* pm.c */
++void __attribute__((noreturn)) go_to_protected_mode(void);
++
++/* pmjump.S */
++void __attribute__((noreturn))
++ protected_mode_jump(u32 entrypoint, u32 bootparams);
++
++/* printf.c */
++unsigned int atou(const char *s);
++int sprintf(char *buf, const char *fmt, ...);
++int vsprintf(char *buf, const char *fmt, va_list args);
++int printf(const char *fmt, ...);
++
++/* string.c */
++int strcmp(const char *str1, const char *str2);
++
++/* tty.c */
++void puts(const char *);
++void putchar(int);
++int getchar(void);
++void kbd_flush(void);
++int getchar_timeout(void);
++
++/* video.c */
++void set_video(void);
++
++/* video-vesa.c */
++void vesa_store_edid(void);
++
++/* voyager.c */
++int query_voyager(void);
++
++#endif /* __ASSEMBLY__ */
++
++#endif /* BOOT_BOOT_H */
+diff -puN arch/i386/boot/bootsect.S~git-newsetup /dev/null
+--- a/arch/i386/boot/bootsect.S
++++ /dev/null
+@@ -1,98 +0,0 @@
+-/*
+- * bootsect.S Copyright (C) 1991, 1992 Linus Torvalds
+- *
+- * modified by Drew Eckhardt
+- * modified by Bruce Evans (bde)
+- * modified by Chris Noe (May 1999) (as86 -> gas)
+- * gutted by H. Peter Anvin (Jan 2003)
+- *
+- * BIG FAT NOTE: We're in real mode using 64k segments. Therefore segment
+- * addresses must be multiplied by 16 to obtain their respective linear
+- * addresses. To avoid confusion, linear addresses are written using leading
+- * hex while segment addresses are written as segment:offset.
+- *
+- */
+-
+-#include <asm/boot.h>
+-
+-SETUPSECTS = 4 /* default nr of setup-sectors */
+-BOOTSEG = 0x07C0 /* original address of boot-sector */
+-INITSEG = DEF_INITSEG /* we move boot here - out of the way */
+-SETUPSEG = DEF_SETUPSEG /* setup starts here */
+-SYSSEG = DEF_SYSSEG /* system loaded at 0x10000 (65536) */
+-SYSSIZE = DEF_SYSSIZE /* system size: # of 16-byte clicks */
+- /* to be loaded */
+-ROOT_DEV = 0 /* ROOT_DEV is now written by "build" */
+-SWAP_DEV = 0 /* SWAP_DEV is now written by "build" */
+-
+-#ifndef SVGA_MODE
+-#define SVGA_MODE ASK_VGA
+-#endif
+-
+-#ifndef RAMDISK
+-#define RAMDISK 0
+-#endif
+-
+-#ifndef ROOT_RDONLY
+-#define ROOT_RDONLY 1
+-#endif
+-
+-.code16
+-.text
+-
+-.global _start
+-_start:
+-
+- # Normalize the start address
+- jmpl $BOOTSEG, $start2
+-
+-start2:
+- movw %cs, %ax
+- movw %ax, %ds
+- movw %ax, %es
+- movw %ax, %ss
+- movw $0x7c00, %sp
+- sti
+- cld
+-
+- movw $bugger_off_msg, %si
+-
+-msg_loop:
+- lodsb
+- andb %al, %al
+- jz die
+- movb $0xe, %ah
+- movw $7, %bx
+- int $0x10
+- jmp msg_loop
+-
+-die:
+- # Allow the user to press a key, then reboot
+- xorw %ax, %ax
+- int $0x16
+- int $0x19
+-
+- # int 0x19 should never return. In case it does anyway,
+- # invoke the BIOS reset code...
+- ljmp $0xf000,$0xfff0
+-
+-
+-bugger_off_msg:
+- .ascii "Direct booting from floppy is no longer supported.\r\n"
+- .ascii "Please use a boot loader program instead.\r\n"
+- .ascii "\n"
+- .ascii "Remove disk and press any key to reboot . . .\r\n"
+- .byte 0
+-
+-
+- # Kernel attributes; used by setup
+-
+- .org 497
+-setup_sects: .byte SETUPSECTS
+-root_flags: .word ROOT_RDONLY
+-syssize: .word SYSSIZE
+-swap_dev: .word SWAP_DEV
+-ram_size: .word RAMDISK
+-vid_mode: .word SVGA_MODE
+-root_dev: .word ROOT_DEV
+-boot_flag: .word 0xAA55
+diff -puN /dev/null arch/i386/boot/cmdline.c
+--- /dev/null
++++ a/arch/i386/boot/cmdline.c
+@@ -0,0 +1,97 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/cmdline.c
++ *
++ * Simple command-line parser for early boot.
++ */
++
++#include "boot.h"
++
++static inline int myisspace(u8 c)
++{
++ return c <= ' '; /* Close enough approximation */
++}
++
++/*
++ * Find a non-boolean option, that is, "option=argument". In accordance
++ * with standard Linux practice, if this option is repeated, this returns
++ * the last instance on the command line.
++ *
++ * Returns the length of the argument (regardless of if it was
++ * truncated to fit in the buffer), or -1 on not found.
++ */
++int cmdline_find_option(const char *option, char *buffer, int bufsize)
++{
++ u32 cmdline_ptr = boot_params.hdr.cmd_line_ptr;
++ addr_t cptr;
++ char c;
++ int len = -1;
++ const char *opptr = NULL;
++ char *bufptr = buffer;
++ enum {
++ st_wordstart, /* Start of word/after whitespace */
++ st_wordcmp, /* Comparing this word */
++ st_wordskip, /* Miscompare, skip */
++ st_bufcpy /* Copying this to buffer */
++ } state = st_wordstart;
++
++ if (!cmdline_ptr || cmdline_ptr >= 0x100000)
++ return -1; /* No command line, or inaccessible */
++
++ cptr = cmdline_ptr & 0xf;
++ set_fs(cmdline_ptr >> 4);
++
++ while (cptr < 0x10000 && (c = rdfs8(cptr++))) {
++ switch (state) {
++ case st_wordstart:
++ if (myisspace(c))
++ break;
++
++ /* else */
++ state = st_wordcmp;
++ opptr = option;
++ /* fall through */
++
++ case st_wordcmp:
++ if (c == '=' && !*opptr) {
++ len = 0;
++ bufptr = buffer;
++ state = st_bufcpy;
++ } else if (myisspace(c)) {
++ state = st_wordstart;
++ } else if (c != *opptr++) {
++ state = st_wordskip;
++ }
++ break;
++
++ case st_wordskip:
++ if (myisspace(c))
++ state = st_wordstart;
++ break;
++
++ case st_bufcpy:
++ if (myisspace(c)) {
++ state = st_wordstart;
++ } else {
++ if (len < bufsize-1)
++ *bufptr++ = c;
++ len++;
++ }
++ break;
++ }
++ }
++
++ if (bufsize)
++ *bufptr = '\0';
++
++ return len;
++}
+diff -puN /dev/null arch/i386/boot/code16gcc.h
+--- /dev/null
++++ a/arch/i386/boot/code16gcc.h
+@@ -0,0 +1,9 @@
++/*
++ * code16gcc.h
++ *
++ * This file is -include'd when compiling 16-bit C code.
++ */
++
++#ifndef __ASSEMBLY__
++asm(".code16gcc");
++#endif
+diff -puN arch/i386/boot/compressed/Makefile~git-newsetup arch/i386/boot/compressed/Makefile
+--- a/arch/i386/boot/compressed/Makefile~git-newsetup
++++ a/arch/i386/boot/compressed/Makefile
+@@ -9,9 +9,14 @@ targets := vmlinux vmlinux.bin vmlinux.
+ EXTRA_AFLAGS := -traditional
+
+ LDFLAGS_vmlinux := -T
+-CFLAGS_misc.o += -fPIC
+ hostprogs-y := relocs
+
++CFLAGS := -m32 -D__KERNEL__ $(LINUX_INCLUDE) -O2 \
++ -fno-strict-aliasing -fPIC \
++ $(call cc-option,-ffreestanding) \
++ $(call cc-option,-fno-stack-protector)
++LDFLAGS := -m elf_i386
++
+ $(obj)/vmlinux: $(src)/vmlinux.lds $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o FORCE
+ $(call if_changed,ld)
+ @:
+diff -puN arch/i386/boot/compressed/head.S~git-newsetup arch/i386/boot/compressed/head.S
+--- a/arch/i386/boot/compressed/head.S~git-newsetup
++++ a/arch/i386/boot/compressed/head.S
+@@ -45,10 +45,10 @@ startup_32:
+ * at and where we were actually loaded at. This can only be done
+ * with a short local call on x86. Nothing else will tell us what
+ * address we are running at. The reserved chunk of the real-mode
+- * data at 0x34-0x3f are used as the stack for this calculation.
+- * Only 4 bytes are needed.
++ * data at 0x1e4 (defined as a scratch field) are used as the stack
++ * for this calculation. Only 4 bytes are needed.
+ */
+- leal 0x40(%esi), %esp
++ leal (0x1e4+4)(%esi), %esp
+ call 1f
+ 1: popl %ebp
+ subl $1b, %ebp
+diff -puN arch/i386/boot/compressed/misc.c~git-newsetup arch/i386/boot/compressed/misc.c
+--- a/arch/i386/boot/compressed/misc.c~git-newsetup
++++ a/arch/i386/boot/compressed/misc.c
+@@ -11,7 +11,6 @@
+
+ #undef CONFIG_PARAVIRT
+ #include <linux/linkage.h>
+-#include <linux/vmalloc.h>
+ #include <linux/screen_info.h>
+ #include <asm/io.h>
+ #include <asm/page.h>
+@@ -364,8 +363,10 @@ asmlinkage void decompress_kernel(void *
+
+ if ((u32)output & (CONFIG_PHYSICAL_ALIGN -1))
+ error("Destination address not CONFIG_PHYSICAL_ALIGN aligned");
++#ifndef CONFIG_X86_64
+ if (end > ((-__PAGE_OFFSET-(512 <<20)-1) & 0x7fffffff))
+ error("Destination address too large");
++#endif
+ #ifndef CONFIG_RELOCATABLE
+ if ((u32)output != LOAD_PHYSICAL_ADDR)
+ error("Wrong destination address");
+diff -puN /dev/null arch/i386/boot/copy.S
+--- /dev/null
++++ a/arch/i386/boot/copy.S
+@@ -0,0 +1,101 @@
++/* ----------------------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/copy.S
++ *
++ * Memory copy routines
++ */
++
++ .code16gcc
++ .text
++
++ .globl memcpy
++ .type memcpy, @function
++memcpy:
++ pushw %si
++ pushw %di
++ movw %ax, %di
++ movw %dx, %si
++ pushw %cx
++ shrw $2, %cx
++ rep; movsl
++ popw %cx
++ andw $3, %cx
++ rep; movsb
++ popw %di
++ popw %si
++ ret
++ .size memcpy, .-memcpy
++
++ .globl memset
++ .type memset, @function
++memset:
++ pushw %di
++ movw %ax, %di
++ movzbl %dl, %eax
++ imull $0x01010101,%eax
++ pushw %cx
++ shrw $2, %cx
++ rep; stosl
++ popw %cx
++ andw $3, %cx
++ rep; stosb
++ popw %di
++ ret
++ .size memset, .-memset
++
++ .globl copy_from_fs
++ .type copy_from_fs, @function
++copy_from_fs:
++ pushw %ds
++ pushw %fs
++ popw %ds
++ call memcpy
++ popw %ds
++ ret
++ .size copy_from_fs, .-copy_from_fs
++
++ .globl copy_to_fs
++ .type copy_to_fs, @function
++copy_to_fs:
++ pushw %es
++ pushw %fs
++ popw %es
++ call memcpy
++ popw %es
++ ret
++ .size copy_to_fs, .-copy_to_fs
++
++#if 0 /* Not currently used, but can be enabled as needed */
++
++ .globl copy_from_gs
++ .type copy_from_gs, @function
++copy_from_gs:
++ pushw %ds
++ pushw %gs
++ popw %ds
++ call memcpy
++ popw %ds
++ ret
++ .size copy_from_gs, .-copy_from_gs
++ .globl copy_to_gs
++
++ .type copy_to_gs, @function
++copy_to_gs:
++ pushw %es
++ pushw %gs
++ popw %es
++ call memcpy
++ popw %es
++ ret
++ .size copy_to_gs, .-copy_to_gs
++
++#endif
+diff -puN /dev/null arch/i386/boot/cpu.c
+--- /dev/null
++++ a/arch/i386/boot/cpu.c
+@@ -0,0 +1,69 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/cpucheck.c
++ *
++ * Check for obligatory CPU features and abort if the features are not
++ * present.
++ */
++
++#include "boot.h"
++#include "bitops.h"
++#include <asm/cpufeature.h>
++
++static char *cpu_name(int level)
++{
++ static char buf[6];
++
++ if (level == 64) {
++ return "x86-64";
++ } else {
++ sprintf(buf, "i%d86", level);
++ return buf;
++ }
++}
++
++int validate_cpu(void)
++{
++ u32 *err_flags;
++ int cpu_level, req_level;
++
++ check_cpu(&cpu_level, &req_level, &err_flags);
++
++ if (cpu_level < req_level) {
++ printf("This kernel requires an %s CPU, ",
++ cpu_name(req_level));
++ printf("but only detected an %s CPU.\n",
++ cpu_name(cpu_level));
++ return -1;
++ }
++
++ if (err_flags) {
++ int i, j;
++ puts("This kernel requires the following features "
++ "not present on the CPU:\n");
++
++ for (i = 0; i < NCAPINTS; i++) {
++ u32 e = err_flags[i];
++
++ for (j = 0; j < 32; j++) {
++ if (e & 1)
++ printf("%d:%d ", i, j);
++
++ e >>= 1;
++ }
++ }
++ putchar('\n');
++ return -1;
++ } else {
++ return 0;
++ }
++}
+diff -puN /dev/null arch/i386/boot/cpucheck.c
+--- /dev/null
++++ a/arch/i386/boot/cpucheck.c
+@@ -0,0 +1,266 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/cpu.c
++ *
++ * Check for obligatory CPU features and abort if the features are not
++ * present. This code should be compilable as 16-, 32- or 64-bit
++ * code, so be very careful with types and inline assembly.
++ *
++ * This code should not contain any messages; that requires an
++ * additional wrapper.
++ *
++ * As written, this code is not safe for inclusion into the kernel
++ * proper (after FPU initialization, in particular).
++ */
++
++#ifdef _SETUP
++# include "boot.h"
++# include "bitops.h"
++#endif
++#include <linux/types.h>
++#include <asm/cpufeature.h>
++#include <asm/processor-flags.h>
++#include <asm/required-features.h>
++#include <asm/msr-index.h>
++
++struct cpu_features {
++ int level;
++ int model;
++ u32 flags[NCAPINTS];
++};
++
++static struct cpu_features cpu;
++static u32 cpu_vendor[3];
++static u32 err_flags[NCAPINTS];
++
++#ifdef CONFIG_X86_64
++static const int req_level = 64;
++#elif defined(CONFIG_X86_MINIMUM_CPU_MODEL)
++static const int req_level = CONFIG_X86_MINIMUM_CPU_MODEL;
++#else
++static const int req_level = 3;
++#endif
++
++static const u32 req_flags[NCAPINTS] =
++{
++ REQUIRED_MASK0,
++ REQUIRED_MASK1,
++ REQUIRED_MASK2,
++ REQUIRED_MASK3,
++ REQUIRED_MASK4,
++ REQUIRED_MASK5,
++ REQUIRED_MASK6,
++};
++
++#define A32(a,b,c,d) (((d) << 24)+((c) << 16)+((b) << 8)+(a))
++
++static int is_amd(void)
++{
++ return cpu_vendor[0] == A32('A','u','t','h') &&
++ cpu_vendor[1] == A32('e','n','t','i') &&
++ cpu_vendor[2] == A32('c','A','M','D');
++}
++
++static int is_centaur(void)
++{
++ return cpu_vendor[0] == A32('C','e','n','t') &&
++ cpu_vendor[1] == A32('a','u','r','H') &&
++ cpu_vendor[2] == A32('a','u','l','s');
++}
++
++static int is_transmeta(void)
++{
++ return cpu_vendor[0] == A32('G','e','n','u') &&
++ cpu_vendor[1] == A32('i','n','e','T') &&
++ cpu_vendor[2] == A32('M','x','8','6');
++}
++
++static int has_fpu(void)
++{
++ u16 fcw = -1, fsw = -1;
++ u32 cr0;
++
++ asm("movl %%cr0,%0" : "=r" (cr0));
++ if (cr0 & (X86_CR0_EM|X86_CR0_TS)) {
++ cr0 &= ~(X86_CR0_EM|X86_CR0_TS);
++ asm volatile("movl %0,%%cr0" : : "r" (cr0));
++ }
++
++ asm("fninit ; fnstsw %0 ; fnstcw %1" : "+m" (fsw), "+m" (fcw));
++
++ return fsw == 0 && (fcw & 0x103f) == 0x003f;
++}
++
++static int has_eflag(u32 mask)
++{
++ u32 f0, f1;
++
++ asm("pushfl ; "
++ "pushfl ; "
++ "popl %0 ; "
++ "movl %0,%1 ; "
++ "xorl %2,%1 ; "
++ "pushl %1 ; "
++ "popfl ; "
++ "pushfl ; "
++ "popl %1 ; "
++ "popfl"
++ : "=r" (f0), "=r" (f1)
++ : "g" (mask));
++
++ return !!((f0^f1) & mask);
++}
++
++static void get_flags(void)
++{
++ u32 max_intel_level, max_amd_level;
++ u32 tfms;
++
++ if (has_fpu())
++ set_bit(X86_FEATURE_FPU, cpu.flags);
++
++ if (has_eflag(X86_EFLAGS_ID)) {
++ asm("cpuid"
++ : "=a" (max_intel_level),
++ "=b" (cpu_vendor[0]),
++ "=d" (cpu_vendor[1]),
++ "=c" (cpu_vendor[2])
++ : "a" (0));
++
++ if (max_intel_level >= 0x00000001 &&
++ max_intel_level <= 0x0000ffff) {
++ asm("cpuid"
++ : "=a" (tfms),
++ "=c" (cpu.flags[4]),
++ "=d" (cpu.flags[0])
++ : "a" (0x00000001)
++ : "ebx");
++ cpu.level = (tfms >> 8) & 15;
++ cpu.model = (tfms >> 4) & 15;
++ if (cpu.level >= 6)
++ cpu.model += ((tfms >> 16) & 0xf) << 4;
++ }
++
++ asm("cpuid"
++ : "=a" (max_amd_level)
++ : "a" (0x80000000)
++ : "ebx", "ecx", "edx");
++
++ if (max_amd_level >= 0x80000001 &&
++ max_amd_level <= 0x8000ffff) {
++ u32 eax = 0x80000001;
++ asm("cpuid"
++ : "+a" (eax),
++ "=c" (cpu.flags[6]),
++ "=d" (cpu.flags[1])
++ : : "ebx");
++ }
++ }
++}
++
++/* Returns a bitmask of which words we have error bits in */
++static int check_flags(void)
++{
++ u32 err;
++ int i;
++
++ err = 0;
++ for (i = 0; i < NCAPINTS; i++) {
++ err_flags[i] = req_flags[i] & ~cpu.flags[i];
++ if (err_flags[i])
++ err |= 1 << i;
++ }
++
++ return err;
++}
++
++/*
++ * Returns -1 on error.
++ *
++ * *cpu_level is set to the current CPU level; *req_level to the required
++ * level. x86-64 is considered level 64 for this purpose.
++ *
++ * *err_flags_ptr is set to the flags error array if there are flags missing.
++ */
++int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr)
++{
++ int err;
++
++ memset(&cpu.flags, 0, sizeof cpu.flags);
++ cpu.level = 3;
++
++ if (has_eflag(X86_EFLAGS_AC))
++ cpu.level = 4;
++
++ get_flags();
++ err = check_flags();
++
++ if (test_bit(X86_FEATURE_LM, cpu.flags))
++ cpu.level = 64;
++
++ if (err == 0x01 &&
++ !(err_flags[0] &
++ ~((1 << X86_FEATURE_XMM)|(1 << X86_FEATURE_XMM2))) &&
++ is_amd()) {
++ /* If this is an AMD and we're only missing SSE+SSE2, try to
++ turn them on */
++
++ u32 ecx = MSR_K7_HWCR;
++ u32 eax, edx;
++
++ asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
++ eax &= ~(1 << 15);
++ asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
++
++ get_flags(); /* Make sure it really did something */
++ err = check_flags();
++ } else if (err == 0x01 &&
++ !(err_flags[0] & ~(1 << X86_FEATURE_CX8)) &&
++ is_centaur() && cpu.model >= 6) {
++ /* If this is a VIA C3, we might have to enable CX8
++ explicitly */
++
++ u32 ecx = MSR_VIA_FCR;
++ u32 eax, edx;
++
++ asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
++ eax |= (1<<1)|(1<<7);
++ asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
++
++ set_bit(X86_FEATURE_CX8, cpu.flags);
++ err = check_flags();
++ } else if (err == 0x01 && is_transmeta()) {
++ /* Transmeta might have masked feature bits in word 0 */
++
++ u32 ecx = 0x80860004;
++ u32 eax, edx;
++ u32 level = 1;
++
++ asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
++ asm("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx));
++ asm("cpuid"
++ : "+a" (level), "=d" (cpu.flags[0])
++ : : "ecx", "ebx");
++ asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
++
++ err = check_flags();
++ }
++
++ if (err_flags_ptr)
++ *err_flags_ptr = err ? err_flags : NULL;
++ if (cpu_level_ptr)
++ *cpu_level_ptr = cpu.level;
++ if (req_level_ptr)
++ *req_level_ptr = req_level;
++
++ return (cpu.level < req_level || err) ? -1 : 0;
++}
+diff -puN arch/i386/boot/edd.S~git-newsetup /dev/null
+--- a/arch/i386/boot/edd.S
++++ /dev/null
+@@ -1,231 +0,0 @@
+-/*
+- * BIOS Enhanced Disk Drive support
+- * Copyright (C) 2002, 2003, 2004 Dell, Inc.
+- * by Matt Domsch <Matt_Domsch@dell.com> October 2002
+- * conformant to T13 Committee www.t13.org
+- * projects 1572D, 1484D, 1386D, 1226DT
+- * disk signature read by Matt Domsch <Matt_Domsch@dell.com>
+- * and Andrew Wilks <Andrew_Wilks@dell.com> September 2003, June 2004
+- * legacy CHS retrieval by Patrick J. LoPresti <patl@users.sourceforge.net>
+- * March 2004
+- * Command line option parsing, Matt Domsch, November 2004
+- */
+-
+-#include <linux/edd.h>
+-#include <asm/setup.h>
+-
+-#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
+-
+-# It is assumed that %ds == INITSEG here
+-
+- movb $0, (EDD_MBR_SIG_NR_BUF)
+- movb $0, (EDDNR)
+-
+-# Check the command line for options:
+-# edd=of disables EDD completely (edd=off)
+-# edd=sk skips the MBR test (edd=skipmbr)
+-# edd=on re-enables EDD (edd=on)
+-
+- pushl %esi
+- movw $edd_mbr_sig_start, %di # Default to edd=on
+-
+- movl %cs:(cmd_line_ptr), %esi
+- andl %esi, %esi
+- jz old_cl # Old boot protocol?
+-
+-# Convert to a real-mode pointer in fs:si
+- movl %esi, %eax
+- shrl $4, %eax
+- movw %ax, %fs
+- andw $0xf, %si
+- jmp have_cl_pointer
+-
+-# Old-style boot protocol?
+-old_cl:
+- push %ds # aka INITSEG
+- pop %fs
+-
+- cmpw $0xa33f, (0x20)
+- jne done_cl # No command line at all?
+- movw (0x22), %si # Pointer relative to INITSEG
+-
+-# fs:si has the pointer to the command line now
+-have_cl_pointer:
+-
+-# Loop through kernel command line one byte at a time. Just in
+-# case the loader is buggy and failed to null-terminate the command line
+-# terminate if we get close enough to the end of the segment that we
+-# cannot fit "edd=XX"...
+-cl_atspace:
+- cmpw $-5, %si # Watch for segment wraparound
+- jae done_cl
+- movl %fs:(%si), %eax
+- andb %al, %al # End of line?
+- jz done_cl
+- cmpl $EDD_CL_EQUALS, %eax
+- jz found_edd_equals
+- cmpb $0x20, %al # <= space consider whitespace
+- ja cl_skipword
+- incw %si
+- jmp cl_atspace
+-
+-cl_skipword:
+- cmpw $-5, %si # Watch for segment wraparound
+- jae done_cl
+- movb %fs:(%si), %al # End of string?
+- andb %al, %al
+- jz done_cl
+- cmpb $0x20, %al
+- jbe cl_atspace
+- incw %si
+- jmp cl_skipword
+-
+-found_edd_equals:
+-# only looking at first two characters after equals
+-# late overrides early on the command line, so keep going after finding something
+- movw %fs:4(%si), %ax
+- cmpw $EDD_CL_OFF, %ax # edd=of
+- je do_edd_off
+- cmpw $EDD_CL_SKIP, %ax # edd=sk
+- je do_edd_skipmbr
+- cmpw $EDD_CL_ON, %ax # edd=on
+- je do_edd_on
+- jmp cl_skipword
+-do_edd_skipmbr:
+- movw $edd_start, %di
+- jmp cl_skipword
+-do_edd_off:
+- movw $edd_done, %di
+- jmp cl_skipword
+-do_edd_on:
+- movw $edd_mbr_sig_start, %di
+- jmp cl_skipword
+-
+-done_cl:
+- popl %esi
+- jmpw *%di
+-
+-# Read the first sector of each BIOS disk device and store the 4-byte signature
+-edd_mbr_sig_start:
+- movb $0x80, %dl # from device 80
+- movw $EDD_MBR_SIG_BUF, %bx # store buffer ptr in bx
+-edd_mbr_sig_read:
+- movl $0xFFFFFFFF, %eax
+- movl %eax, (%bx) # assume failure
+- pushw %bx
+- movb $READ_SECTORS, %ah
+- movb $1, %al # read 1 sector
+- movb $0, %dh # at head 0
+- movw $1, %cx # cylinder 0, sector 0
+- pushw %es
+- pushw %ds
+- popw %es
+- movw $EDDBUF, %bx # disk's data goes into EDDBUF
+- pushw %dx # work around buggy BIOSes
+- stc # work around buggy BIOSes
+- int $0x13
+- sti # work around buggy BIOSes
+- popw %dx
+- popw %es
+- popw %bx
+- jc edd_mbr_sig_done # on failure, we're done.
+- cmpb $0, %ah # some BIOSes do not set CF
+- jne edd_mbr_sig_done # on failure, we're done.
+- movl (EDDBUF+EDD_MBR_SIG_OFFSET), %eax # read sig out of the MBR
+- movl %eax, (%bx) # store success
+- incb (EDD_MBR_SIG_NR_BUF) # note that we stored something
+- incb %dl # increment to next device
+- addw $4, %bx # increment sig buffer ptr
+- cmpb $EDD_MBR_SIG_MAX, (EDD_MBR_SIG_NR_BUF) # Out of space?
+- jb edd_mbr_sig_read # keep looping
+-edd_mbr_sig_done:
+-
+-# Do the BIOS Enhanced Disk Drive calls
+-# This consists of two calls:
+-# int 13h ah=41h "Check Extensions Present"
+-# int 13h ah=48h "Get Device Parameters"
+-# int 13h ah=08h "Legacy Get Device Parameters"
+-#
+-# A buffer of size EDDMAXNR*(EDDEXTSIZE+EDDPARMSIZE) is reserved for our use
+-# in the boot_params at EDDBUF. The first four bytes of which are
+-# used to store the device number, interface support map and version
+-# results from fn41. The next four bytes are used to store the legacy
+-# cylinders, heads, and sectors from fn08. The following 74 bytes are used to
+-# store the results from fn48. Starting from device 80h, fn41, then fn48
+-# are called and their results stored in EDDBUF+n*(EDDEXTSIZE+EDDPARMIZE).
+-# Then the pointer is incremented to store the data for the next call.
+-# This repeats until either a device doesn't exist, or until EDDMAXNR
+-# devices have been stored.
+-# The one tricky part is that ds:si always points EDDEXTSIZE bytes into
+-# the structure, and the fn41 and fn08 results are stored at offsets
+-# from there. This removes the need to increment the pointer for
+-# every store, and leaves it ready for the fn48 call.
+-# A second one-byte buffer, EDDNR, in the boot_params stores
+-# the number of BIOS devices which exist, up to EDDMAXNR.
+-# In setup.c, copy_edd() stores both boot_params buffers away
+-# for later use, as they would get overwritten otherwise.
+-# This code is sensitive to the size of the structs in edd.h
+-edd_start:
+- # %ds points to the bootsector
+- # result buffer for fn48
+- movw $EDDBUF+EDDEXTSIZE, %si # in ds:si, fn41 results
+- # kept just before that
+- movb $0x80, %dl # BIOS device 0x80
+-
+-edd_check_ext:
+- movb $CHECKEXTENSIONSPRESENT, %ah # Function 41
+- movw $EDDMAGIC1, %bx # magic
+- int $0x13 # make the call
+- jc edd_done # no more BIOS devices
+-
+- cmpw $EDDMAGIC2, %bx # is magic right?
+- jne edd_next # nope, next...
+-
+- movb %dl, %ds:-8(%si) # store device number
+- movb %ah, %ds:-7(%si) # store version
+- movw %cx, %ds:-6(%si) # store extensions
+- incb (EDDNR) # note that we stored something
+-
+-edd_get_device_params:
+- movw $EDDPARMSIZE, %ds:(%si) # put size
+- movw $0x0, %ds:2(%si) # work around buggy BIOSes
+- movb $GETDEVICEPARAMETERS, %ah # Function 48
+- int $0x13 # make the call
+- # Don't check for fail return
+- # it doesn't matter.
+-edd_get_legacy_chs:
+- xorw %ax, %ax
+- movw %ax, %ds:-4(%si)
+- movw %ax, %ds:-2(%si)
+- # Ralf Brown's Interrupt List says to set ES:DI to
+- # 0000h:0000h "to guard against BIOS bugs"
+- pushw %es
+- movw %ax, %es
+- movw %ax, %di
+- pushw %dx # legacy call clobbers %dl
+- movb $LEGACYGETDEVICEPARAMETERS, %ah # Function 08
+- int $0x13 # make the call
+- jc edd_legacy_done # failed
+- movb %cl, %al # Low 6 bits are max
+- andb $0x3F, %al # sector number
+- movb %al, %ds:-1(%si) # Record max sect
+- movb %dh, %ds:-2(%si) # Record max head number
+- movb %ch, %al # Low 8 bits of max cyl
+- shr $6, %cl
+- movb %cl, %ah # High 2 bits of max cyl
+- movw %ax, %ds:-4(%si)
+-
+-edd_legacy_done:
+- popw %dx
+- popw %es
+- movw %si, %ax # increment si
+- addw $EDDPARMSIZE+EDDEXTSIZE, %ax
+- movw %ax, %si
+-
+-edd_next:
+- incb %dl # increment to next device
+- cmpb $EDDMAXNR, (EDDNR) # Out of space?
+- jb edd_check_ext # keep looping
+-
+-edd_done:
+-#endif
+diff -puN /dev/null arch/i386/boot/edd.c
+--- /dev/null
++++ a/arch/i386/boot/edd.c
+@@ -0,0 +1,196 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/edd.c
++ *
++ * Get EDD BIOS disk information
++ */
++
++#include "boot.h"
++#include <linux/edd.h>
++
++#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
++
++struct edd_dapa {
++ u8 pkt_size;
++ u8 rsvd;
++ u16 sector_cnt;
++ u16 buf_off, buf_seg;
++ u64 lba;
++ u64 buf_lin_addr;
++};
++
++/*
++ * Note: this uses the heap to hold the loaded sector.
++ */
++static int read_sector(u8 devno, u64 lba, void *buf)
++{
++ struct edd_dapa dapa;
++ u16 ax, bx, cx, dx, si;
++
++ memset(&dapa, 0, sizeof dapa);
++ dapa.pkt_size = sizeof(dapa);
++ dapa.sector_cnt = 1;
++ dapa.buf_off = (size_t)buf;
++ dapa.buf_seg = ds();
++ dapa.lba = lba;
++
++ ax = 0x4200; /* Extended Read */
++ si = (size_t)&dapa;
++ dx = devno;
++ asm("pushfl; stc; int $0x13; setc %%al; popfl"
++ : "+a" (ax), "+S" (si), "+d" (dx)
++ : "m" (dapa)
++ : "ebx", "ecx", "edi", "memory");
++
++ if (!(u8)ax)
++ return 0; /* OK */
++
++ ax = 0x0201; /* Legacy Read, one sector */
++ cx = 0x0001; /* Sector 0-0-1 */
++ dx = devno;
++ bx = (size_t)buf;
++ asm("pushfl; stc; int $0x13; setc %%al; popfl"
++ : "+a" (ax), "+c" (cx), "+d" (dx), "+b" (bx)
++ : : "esi", "edi", "memory");
++
++ return -(u8)ax; /* 0 or -1 */
++}
++
++static u32 read_mbr_sig(u8 devno, struct edd_info *ei)
++{
++ int sector_size;
++ char *mbrbuf_ptr, *mbrbuf_end;
++ u32 mbrsig;
++ u32 buf_base, mbr_base;
++ extern char _end[];
++ static char mbr_buf[1024];
++
++ sector_size = ei->params.bytes_per_sector;
++ if (!sector_size)
++ sector_size = 512; /* Best available guess */
++
++ buf_base = (ds() << 4) + (u32)&_end;
++ mbr_base = (buf_base+sector_size-1) & ~(sector_size-1);
++ mbrbuf_ptr = mbr_buf + (mbr_base-buf_base);
++ mbrbuf_end = mbrbuf_ptr + sector_size;
++
++ if (!(boot_params.hdr.loadflags & CAN_USE_HEAP))
++ return 0;
++ if (mbrbuf_end > (char *)(size_t)boot_params.hdr.heap_end_ptr)
++ return 0;
++
++ if (read_sector(devno, 0, mbrbuf_ptr))
++ return 0;
++
++ mbrsig = *(u32 *)&mbrbuf_ptr[EDD_MBR_SIG_OFFSET];
++ return mbrsig;
++}
++
++static int get_edd_info(u8 devno, struct edd_info *ei)
++{
++ u16 ax, bx, cx, dx, di;
++
++ memset(ei, 0, sizeof *ei);
++
++ /* Check Extensions Present */
++
++ ax = 0x4100;
++ bx = EDDMAGIC1;
++ dx = devno;
++ asm("pushfl; stc; int $0x13; setc %%al; popfl"
++ : "+a" (ax), "+b" (bx), "=c" (cx), "+d" (dx)
++ : : "esi", "edi");
++
++ if ((u8)ax)
++ return -1; /* No extended information */
++
++ if (bx != EDDMAGIC2)
++ return -1;
++
++ ei->device = devno;
++ ei->version = ax >> 8; /* EDD version number */
++ ei->interface_support = cx; /* EDD functionality subsets */
++
++ /* Extended Get Device Parameters */
++
++ ei->params.length = sizeof(ei->params);
++ ax = 0x4800;
++ dx = devno;
++ asm("pushfl; int $0x13; popfl"
++ : "+a" (ax), "+d" (dx)
++ : "S" (&ei->params)
++ : "ebx", "ecx", "edi");
++
++ /* Get legacy CHS parameters */
++
++ /* Ralf Brown recommends setting ES:DI to 0:0 */
++ ax = 0x0800;
++ dx = devno;
++ di = 0;
++ asm("pushw %%es; "
++ "movw %%di,%%es; "
++ "pushfl; stc; int $0x13; setc %%al; popfl; "
++ "popw %%es"
++ : "+a" (ax), "=b" (bx), "=c" (cx), "+d" (dx), "+D" (di)
++ : : "esi");
++
++ if ((u8)ax == 0) {
++ ei->legacy_max_cylinder = (cx >> 8) + ((cx & 0xc0) << 2);
++ ei->legacy_max_head = dx >> 8;
++ ei->legacy_sectors_per_track = cx & 0x3f;
++ }
++
++ return 0;
++}
++
++void query_edd(void)
++{
++ char eddarg[8];
++ int do_mbr = 1;
++ int do_edd = 1;
++ int devno;
++ struct edd_info ei, *edp;
++
++ if (cmdline_find_option("edd", eddarg, sizeof eddarg) > 0) {
++ if (!strcmp(eddarg, "skipmbr") || !strcmp(eddarg, "skip"))
++ do_mbr = 0;
++ else if (!strcmp(eddarg, "off"))
++ do_edd = 0;
++ }
++
++ edp = (struct edd_info *)boot_params.eddbuf;
++
++ if (!do_edd)
++ return;
++
++ for (devno = 0x80; devno < 0x80+EDD_MBR_SIG_MAX; devno++) {
++ /*
++ * Scan the BIOS-supported hard disks and query EDD
++ * information...
++ */
++ get_edd_info(devno, &ei);
++
++ if (boot_params.eddbuf_entries < EDDMAXNR) {
++ memcpy(edp, &ei, sizeof ei);
++ edp++;
++ boot_params.eddbuf_entries++;
++ }
++
++ if (do_mbr) {
++ u32 mbr_sig;
++ mbr_sig = read_mbr_sig(devno, &ei);
++ boot_params.edd_mbr_sig_buffer[devno-0x80] = mbr_sig;
++ }
++ }
++}
++
++#endif
+diff -puN /dev/null arch/i386/boot/header.S
+--- /dev/null
++++ a/arch/i386/boot/header.S
+@@ -0,0 +1,283 @@
++/*
++ * header.S
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ *
++ * Based on bootsect.S and setup.S
++ * modified by more people than can be counted
++ *
++ * Rewritten as a common file by H. Peter Anvin (Apr 2007)
++ *
++ * BIG FAT NOTE: We're in real mode using 64k segments. Therefore segment
++ * addresses must be multiplied by 16 to obtain their respective linear
++ * addresses. To avoid confusion, linear addresses are written using leading
++ * hex while segment addresses are written as segment:offset.
++ *
++ */
++
++#include <asm/segment.h>
++#include <linux/utsrelease.h>
++#include <asm/boot.h>
++#include <asm/e820.h>
++#include <asm/page.h>
++#include <asm/setup.h>
++#include "boot.h"
++
++SETUPSECTS = 4 /* default nr of setup-sectors */
++BOOTSEG = 0x07C0 /* original address of boot-sector */
++SYSSEG = DEF_SYSSEG /* system loaded at 0x10000 (65536) */
++SYSSIZE = DEF_SYSSIZE /* system size: # of 16-byte clicks */
++ /* to be loaded */
++ROOT_DEV = 0 /* ROOT_DEV is now written by "build" */
++SWAP_DEV = 0 /* SWAP_DEV is now written by "build" */
++
++#ifndef SVGA_MODE
++#define SVGA_MODE ASK_VGA
++#endif
++
++#ifndef RAMDISK
++#define RAMDISK 0
++#endif
++
++#ifndef ROOT_RDONLY
++#define ROOT_RDONLY 1
++#endif
++
++ .code16
++ .section ".bstext", "ax"
++
++ .global bootsect_start
++bootsect_start:
++
++ # Normalize the start address
++ ljmp $BOOTSEG, $start2
++
++start2:
++ movw %cs, %ax
++ movw %ax, %ds
++ movw %ax, %es
++ movw %ax, %ss
++ xorw %sp, %sp
++ sti
++ cld
++
++ movw $bugger_off_msg, %si
++
++msg_loop:
++ lodsb
++ andb %al, %al
++ jz bs_die
++ movb $0xe, %ah
++ movw $7, %bx
++ int $0x10
++ jmp msg_loop
++
++bs_die:
++ # Allow the user to press a key, then reboot
++ xorw %ax, %ax
++ int $0x16
++ int $0x19
++
++ # int 0x19 should never return. In case it does anyway,
++ # invoke the BIOS reset code...
++ ljmp $0xf000,$0xfff0
++
++ .section ".bsdata", "a"
++bugger_off_msg:
++ .ascii "Direct booting from floppy is no longer supported.\r\n"
++ .ascii "Please use a boot loader program instead.\r\n"
++ .ascii "\n"
++ .ascii "Remove disk and press any key to reboot . . .\r\n"
++ .byte 0
++
++
++ # Kernel attributes; used by setup. This is part 1 of the
++ # header, from the old boot sector.
++
++ .section ".header", "a"
++ .globl hdr
++hdr:
++setup_sects: .byte SETUPSECTS
++root_flags: .word ROOT_RDONLY
++syssize: .long SYSSIZE
++ram_size: .word RAMDISK
++vid_mode: .word SVGA_MODE
++root_dev: .word ROOT_DEV
++boot_flag: .word 0xAA55
++
++ # offset 512, entry point
++
++ .globl _start
++_start:
++ # Explicitly enter this as bytes, or the assembler
++ # tries to generate a 3-byte jump here, which causes
++ # everything else to push off to the wrong offset.
++ .byte 0xeb # short (2-byte) jump
++ .byte start_of_setup-1f
++1:
++
++ # Part 2 of the header, from the old setup.S
++
++ .ascii "HdrS" # header signature
++ .word 0x0206 # header version number (>= 0x0105)
++ # or else old loadlin-1.5 will fail)
++ .globl realmode_swtch
++realmode_swtch: .word 0, 0 # default_switch, SETUPSEG
++start_sys_seg: .word SYSSEG
++ .word kernel_version-512 # pointing to kernel version string
++ # above section of header is compatible
++ # with loadlin-1.5 (header v1.5). Don't
++ # change it.
++
++type_of_loader: .byte 0 # = 0, old one (LILO, Loadlin,
++ # Bootlin, SYSLX, bootsect...)
++ # See Documentation/i386/boot.txt for
++ # assigned ids
++
++# flags, unused bits must be zero (RFU) bit within loadflags
++loadflags:
++LOADED_HIGH = 1 # If set, the kernel is loaded high
++CAN_USE_HEAP = 0x80 # If set, the loader also has set
++ # heap_end_ptr to tell how much
++ # space behind setup.S can be used for
++ # heap purposes.
++ # Only the loader knows what is free
++#ifndef __BIG_KERNEL__
++ .byte 0
++#else
++ .byte LOADED_HIGH
++#endif
++
++setup_move_size: .word 0x8000 # size to move, when setup is not
++ # loaded at 0x90000. We will move setup
++ # to 0x90000 then just before jumping
++ # into the kernel. However, only the
++ # loader knows how much data behind
++ # us also needs to be loaded.
++
++code32_start: # here loaders can put a different
++ # start address for 32-bit code.
++#ifndef __BIG_KERNEL__
++ .long 0x1000 # 0x1000 = default for zImage
++#else
++ .long 0x100000 # 0x100000 = default for big kernel
++#endif
++
++ramdisk_image: .long 0 # address of loaded ramdisk image
++ # Here the loader puts the 32-bit
++ # address where it loaded the image.
++ # This only will be read by the kernel.
++
++ramdisk_size: .long 0 # its size in bytes
++
++bootsect_kludge:
++ .long 0 # obsolete
++
++heap_end_ptr: .word _end+1024 # (Header version 0x0201 or later)
++ # space from here (exclusive) down to
++ # end of setup code can be used by setup
++ # for local heap purposes.
++
++pad1: .word 0
++cmd_line_ptr: .long 0 # (Header version 0x0202 or later)
++ # If nonzero, a 32-bit pointer
++ # to the kernel command line.
++ # The command line should be
++ # located between the start of
++ # setup and the end of low
++ # memory (0xa0000), or it may
++ # get overwritten before it
++ # gets read. If this field is
++ # used, there is no longer
++ # anything magical about the
++ # 0x90000 segment; the setup
++ # can be located anywhere in
++ # low memory 0x10000 or higher.
++
++ramdisk_max: .long (-__PAGE_OFFSET-(512 << 20)-1) & 0x7fffffff
++ # (Header version 0x0203 or later)
++ # The highest safe address for
++ # the contents of an initrd
++
++kernel_alignment: .long CONFIG_PHYSICAL_ALIGN #physical addr alignment
++ #required for protected mode
++ #kernel
++#ifdef CONFIG_RELOCATABLE
++relocatable_kernel: .byte 1
++#else
++relocatable_kernel: .byte 0
++#endif
++pad2: .byte 0
++pad3: .word 0
++
++cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line,
++ #added with boot protocol
++ #version 2.06
++
++# End of setup header #####################################################
++
++ .section ".inittext", "ax"
++start_of_setup:
++#ifdef SAFE_RESET_DISK_CONTROLLER
++# Reset the disk controller.
++ movw $0x0000, %ax # Reset disk controller
++ movb $0x80, %dl # All disks
++ int $0x13
++#endif
++
++# We will have entired with %cs = %ds+0x20, normalize %cs so
++# it is on par with the other segments.
++ pushw %ds
++ pushw $setup2
++ lretw
++
++setup2:
++# Force %es = %ds
++ movw %ds, %ax
++ movw %ax, %es
++ cld
++
++# Stack paranoia: align the stack and make sure it is good
++# for both 16- and 32-bit references. In particular, if we
++# were meant to have been using the full 16-bit segment, the
++# caller might have set %sp to zero, which breaks %esp-based
++# references.
++ andw $~3, %sp # dword align (might as well...)
++ jnz 1f
++ movw $0xfffc, %sp # Make sure we're not zero
++1: movzwl %sp, %esp # Clear upper half of %esp
++ sti
++
++# Check signature at end of setup
++ cmpl $0x5a5aaa55, setup_sig
++ jne setup_bad
++
++# Zero the bss
++ movw $__bss_start, %di
++ movw $_end+3, %cx
++ xorl %eax, %eax
++ subw %di, %cx
++ shrw $2, %cx
++ rep; stosl
++
++# Jump to C code (should not return)
++ calll main
++
++# Setup corrupt somehow...
++setup_bad:
++ movl $setup_corrupt, %eax
++ calll puts
++ # Fall through...
++
++ .globl die
++ .type die, @function
++die:
++ hlt
++ jmp die
++
++ .size die, .-due
++
++ .section ".initdata", "a"
++setup_corrupt:
++ .byte 7
++ .string "No setup signature found..."
+diff -puN /dev/null arch/i386/boot/main.c
+--- /dev/null
++++ a/arch/i386/boot/main.c
+@@ -0,0 +1,161 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/main.c
++ *
++ * Main module for the real-mode kernel code
++ */
++
++#include "boot.h"
++
++struct boot_params boot_params __attribute__((aligned(16)));
++
++char *HEAP = _end;
++char *heap_end = _end; /* Default end of heap = no heap */
++
++/*
++ * Copy the header into the boot parameter block. Since this
++ * screws up the old-style command line protocol, adjust by
++ * filling in the new-style command line pointer instead.
++ */
++#define OLD_CL_MAGIC 0xA33F
++#define OLD_CL_ADDRESS 0x20
++
++static void copy_boot_params(void)
++{
++ struct old_cmdline {
++ u16 cl_magic;
++ u16 cl_offset;
++ };
++ const struct old_cmdline * const oldcmd =
++ (const struct old_cmdline *)OLD_CL_ADDRESS;
++
++ BUILD_BUG_ON(sizeof boot_params != 4096);
++ memcpy(&boot_params.hdr, &hdr, sizeof hdr);
++
++ if (!boot_params.hdr.cmd_line_ptr &&
++ oldcmd->cl_magic == OLD_CL_MAGIC) {
++ /* Old-style command line protocol. */
++ u16 cmdline_seg;
++
++ /* Figure out if the command line falls in the region
++ of memory that an old kernel would have copied up
++ to 0x90000... */
++ if (oldcmd->cl_offset < boot_params.hdr.setup_move_size)
++ cmdline_seg = ds();
++ else
++ cmdline_seg = 0x9000;
++
++ boot_params.hdr.cmd_line_ptr =
++ (cmdline_seg << 4) + oldcmd->cl_offset;
++ }
++}
++
++/*
++ * Set the keyboard repeat rate to maximum. Unclear why this
++ * is done here; this might be possible to kill off as stale code.
++ */
++static void keyboard_set_repeat(void)
++{
++ u16 ax = 0x0305;
++ u16 bx = 0;
++ asm volatile("int $0x16"
++ : "+a" (ax), "+b" (bx)
++ : : "ecx", "edx", "esi", "edi");
++}
++
++/*
++ * Get Intel SpeedStep IST information.
++ */
++static void query_speedstep_ist(void)
++{
++ asm("int $0x15"
++ : "=a" (boot_params.speedstep_info[0]),
++ "=b" (boot_params.speedstep_info[1]),
++ "=c" (boot_params.speedstep_info[2]),
++ "=d" (boot_params.speedstep_info[3])
++ : "a" (0x0000e980), /* IST Support */
++ "d" (0x47534943)); /* Request value */
++}
++
++/*
++ * Tell the BIOS what CPU mode we intend to run in.
++ */
++static void set_bios_mode(void)
++{
++#ifdef CONFIG_X86_64
++ u32 eax, ebx;
++
++ eax = 0xec00;
++ ebx = 2;
++ asm volatile("int $0x15"
++ : "+a" (eax), "+b" (ebx)
++ : : "ecx", "edx", "esi", "edi");
++#endif
++}
++
++void main(void)
++{
++ /* First, copy the boot header into the "zeropage" */
++ copy_boot_params();
++
++ /* End of heap check */
++ if (boot_params.hdr.loadflags & CAN_USE_HEAP) {
++ heap_end = (char *)(boot_params.hdr.heap_end_ptr
++ +0x200-STACK_SIZE);
++ } else {
++ /* Boot protocol 2.00 only, no heap available */
++ puts("WARNING: Ancient bootloader, some functionality "
++ "may be limited!\n");
++ }
++
++ /* Make sure we have all the proper CPU support */
++ if (validate_cpu()) {
++ puts("Unable to boot - please use a kernel appropriate "
++ "for your CPU.\n");
++ die();
++ }
++
++ /* Tell the BIOS what CPU mode we intend to run in. */
++ set_bios_mode();
++
++ /* Detect memory layout */
++ detect_memory();
++
++ /* Set keyboard repeat rate (why?) */
++ keyboard_set_repeat();
++
++ /* Set the video mode */
++ set_video();
++
++ /* Query MCA information */
++ query_mca();
++
++ /* Voyager */
++#ifdef CONFIG_X86_VOYAGER
++ query_voyager();
++#endif
++
++ /* Query SpeedStep IST information */
++ query_speedstep_ist();
++
++ /* Query APM information */
++#if defined(CONFIG_APM) || defined(CONFIG_APM_MODULE)
++ query_apm_bios();
++#endif
++
++ /* Query EDD information */
++#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
++ query_edd();
++#endif
++ /* Do the last things and invoke protected mode */
++ go_to_protected_mode();
++}
+diff -puN /dev/null arch/i386/boot/mca.c
+--- /dev/null
++++ a/arch/i386/boot/mca.c
+@@ -0,0 +1,43 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/mca.c
++ *
++ * Get the MCA system description table
++ */
++
++#include "boot.h"
++
++int query_mca(void)
++{
++ u8 err;
++ u16 es, bx, len;
++
++ asm("pushw %%es ; "
++ "int $0x15 ; "
++ "setc %0 ; "
++ "movw %%es, %1 ; "
++ "popw %%es"
++ : "=acdSDm" (err), "=acdSDm" (es), "=b" (bx)
++ : "a" (0xc000));
++
++ if (err)
++ return -1; /* No MCA present */
++
++ set_fs(es);
++ len = rdfs16(bx);
++
++ if (len > sizeof(boot_params.sys_desc_table))
++ len = sizeof(boot_params.sys_desc_table);
++
++ copy_from_fs(&boot_params.sys_desc_table, bx, len);
++ return 0;
++}
+diff -puN /dev/null arch/i386/boot/memory.c
+--- /dev/null
++++ a/arch/i386/boot/memory.c
+@@ -0,0 +1,99 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/memory.c
++ *
++ * Memory detection code
++ */
++
++#include "boot.h"
++
++#define SMAP 0x534d4150 /* ASCII "SMAP" */
++
++static int detect_memory_e820(void)
++{
++ u32 next = 0;
++ u32 size, id;
++ u8 err;
++ struct e820entry *desc = boot_params.e820_map;
++
++ do {
++ size = sizeof(struct e820entry);
++ id = SMAP;
++ asm("int $0x15; setc %0"
++ : "=am" (err), "+b" (next), "+d" (id), "+c" (size),
++ "=m" (*desc)
++ : "D" (desc), "a" (0xe820));
++
++ if (err || id != SMAP)
++ break;
++
++ boot_params.e820_entries++;
++ desc++;
++ } while (next && boot_params.e820_entries < E820MAX);
++
++ return boot_params.e820_entries;
++}
++
++static int detect_memory_e801(void)
++{
++ u16 ax, bx, cx, dx;
++ u8 err;
++
++ bx = cx = dx = 0;
++ ax = 0xe801;
++ asm("stc; int $0x15; setc %0"
++ : "=m" (err), "+a" (ax), "+b" (bx), "+c" (cx), "+d" (dx));
++
++ if (err)
++ return -1;
++
++ /* Do we really need to do this? */
++ if (cx || dx) {
++ ax = cx;
++ bx = dx;
++ }
++
++ if (ax > 15*1024)
++ return -1; /* Bogus! */
++
++ /* This ignores memory above 16MB if we have a memory hole
++ there. If someone actually finds a machine with a memory
++ hole at 16MB and no support for 0E820h they should probably
++ generate a fake e820 map. */
++ boot_params.alt_mem_k = (ax == 15*1024) ? (dx << 6)+ax : ax;
++
++ return 0;
++}
++
++static int detect_memory_88(void)
++{
++ u16 ax;
++ u8 err;
++
++ ax = 0x8800;
++ asm("stc; int $0x15; setc %0" : "=bcdm" (err), "+a" (ax));
++
++ boot_params.screen_info.ext_mem_k = ax;
++
++ return -err;
++}
++
++int detect_memory(void)
++{
++ if (detect_memory_e820() > 0)
++ return 0;
++
++ if (!detect_memory_e801())
++ return 0;
++
++ return detect_memory_88();
++}
+diff -puN /dev/null arch/i386/boot/pm.c
+--- /dev/null
++++ a/arch/i386/boot/pm.c
+@@ -0,0 +1,170 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/pm.c
++ *
++ * Prepare the machine for transition to protected mode.
++ */
++
++#include "boot.h"
++#include <asm/segment.h>
++
++/*
++ * Invoke the realmode switch hook if present; otherwise
++ * disable all interrupts.
++ */
++static void realmode_switch_hook(void)
++{
++ if (boot_params.hdr.realmode_swtch) {
++ asm volatile("lcallw *%0"
++ : : "m" (boot_params.hdr.realmode_swtch)
++ : "eax", "ebx", "ecx", "edx");
++ } else {
++ asm volatile("cli");
++ outb(0x80, 0x70); /* Disable NMI */
++ io_delay();
++ }
++}
++
++/*
++ * A zImage kernel is loaded at 0x10000 but wants to run at 0x1000.
++ * A bzImage kernel is loaded and runs at 0x100000.
++ */
++static void move_kernel_around(void)
++{
++ /* Note: rely on the compile-time option here rather than
++ the LOADED_HIGH flag. The Qemu kernel loader unconditionally
++ sets the loadflags to zero. */
++#ifndef __BIG_KERNEL__
++ u16 dst_seg, src_seg;
++ u32 syssize;
++
++ dst_seg = 0x1000 >> 4;
++ src_seg = 0x10000 >> 4;
++ syssize = boot_params.hdr.syssize; /* Size in 16-byte paragraps */
++
++ while (syssize) {
++ int paras = (syssize >= 0x1000) ? 0x1000 : syssize;
++ int dwords = paras << 2;
++
++ asm volatile("pushw %%es ; "
++ "pushw %%ds ; "
++ "movw %1,%%es ; "
++ "movw %2,%%ds ; "
++ "xorw %%di,%%di ; "
++ "xorw %%si,%%si ; "
++ "rep;movsl ; "
++ "popw %%ds ; "
++ "popw %%es"
++ : "+c" (dwords)
++ : "rm" (dst_seg), "rm" (src_seg)
++ : "esi", "edi");
++
++ syssize -= paras;
++ dst_seg += paras;
++ src_seg += paras;
++ }
++#endif
++}
++
++/*
++ * Disable all interrupts at the legacy PIC.
++ */
++static void mask_all_interrupts(void)
++{
++ outb(0xff, 0xa1); /* Mask all interrupts on the seconday PIC */
++ io_delay();
++ outb(0xfb, 0x21); /* Mask all but cascade on the primary PIC */
++ io_delay();
++}
++
++/*
++ * Reset IGNNE# if asserted in the FPU.
++ */
++static void reset_coprocessor(void)
++{
++ outb(0, 0xf0);
++ io_delay();
++ outb(0, 0xf1);
++ io_delay();
++}
++
++/*
++ * Set up the GDT
++ */
++#define GDT_ENTRY(flags,base,limit) \
++ (((u64)(base & 0xff000000) << 32) | \
++ ((u64)flags << 40) | \
++ ((u64)(limit & 0x00ff0000) << 32) | \
++ ((u64)(base & 0x00ffff00) << 16) | \
++ ((u64)(limit & 0x0000ffff)))
++
++struct gdt_ptr {
++ u16 len;
++ u32 ptr;
++} __attribute__((packed));
++
++static void setup_gdt(void)
++{
++ /* There are machines which are known to not boot with the GDT
++ being 8-byte unaligned. Intel recommends 16 byte alignment. */
++ static const u64 boot_gdt[] __attribute__((aligned(16))) = {
++ /* CS: code, read/execute, 4 GB, base 0 */
++ [GDT_ENTRY_BOOT_CS] = GDT_ENTRY(0xc09b, 0, 0xfffff),
++ /* DS: data, read/write, 4 GB, base 0 */
++ [GDT_ENTRY_BOOT_DS] = GDT_ENTRY(0xc093, 0, 0xfffff),
++ };
++ struct gdt_ptr gdt;
++
++ gdt.len = sizeof(boot_gdt)-1;
++ gdt.ptr = (u32)&boot_gdt + (ds() << 4);
++
++ asm volatile("lgdtl %0" : : "m" (gdt));
++}
++
++/*
++ * Set up the IDT
++ */
++static void setup_idt(void)
++{
++ static const struct gdt_ptr null_idt = {0, 0};
++ asm volatile("lidtl %0" : : "m" (null_idt));
++}
++
++/*
++ * Actual invocation sequence
++ */
++void go_to_protected_mode(void)
++{
++ /* Hook before leaving real mode, also disables interrupts */
++ realmode_switch_hook();
++
++ /* Move the kernel/setup to their final resting places */
++ move_kernel_around();
++
++ /* Enable the A20 gate */
++ if (enable_a20()) {
++ puts("A20 gate not responding, unable to boot...\n");
++ die();
++ }
++
++ /* Reset coprocessor (IGNNE#) */
++ reset_coprocessor();
++
++ /* Mask all interrupts in the PIC */
++ mask_all_interrupts();
++
++ /* Actual transition to protected mode... */
++ setup_idt();
++ setup_gdt();
++ protected_mode_jump(boot_params.hdr.code32_start,
++ (u32)&boot_params + (ds() << 4));
++}
+diff -puN /dev/null arch/i386/boot/pmjump.S
+--- /dev/null
++++ a/arch/i386/boot/pmjump.S
+@@ -0,0 +1,54 @@
++/* ----------------------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/pmjump.S
++ *
++ * The actual transition into protected mode
++ */
++
++#include <asm/boot.h>
++#include <asm/segment.h>
++
++ .text
++
++ .globl protected_mode_jump
++ .type protected_mode_jump, @function
++
++ .code16
++
++/*
++ * void protected_mode_jump(u32 entrypoint, u32 bootparams);
++ */
++protected_mode_jump:
++ xorl %ebx, %ebx # Flag to indicate this is a boot
++ movl %edx, %esi # Pointer to boot_params table
++ movl %eax, 2f # Patch ljmpl instruction
++ jmp 1f # Short jump to flush instruction q.
++
++1:
++ movw $__BOOT_DS, %cx
++
++ movl %cr0, %edx
++ orb $1, %dl # Protected mode (PE) bit
++ movl %edx, %cr0
++
++ movw %cx, %ds
++ movw %cx, %es
++ movw %cx, %fs
++ movw %cx, %gs
++ movw %cx, %ss
++
++ # Jump to the 32-bit entrypoint
++ .byte 0x66, 0xea # ljmpl opcode
++2: .long 0 # offset
++ .word __BOOT_CS # segment
++
++ .size protected_mode_jump, .-protected_mode_jump
+diff -puN /dev/null arch/i386/boot/printf.c
+--- /dev/null
++++ a/arch/i386/boot/printf.c
+@@ -0,0 +1,331 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/printf.c
++ *
++ * Oh, it's a waste of space, but oh-so-yummy for debugging. This
++ * version of printf() does not include 64-bit support. "Live with
++ * it."
++ *
++ */
++
++#include "boot.h"
++
++static inline int isdigit(int ch)
++{
++ return (ch >= '0') && (ch <= '9');
++}
++
++static int skip_atoi(const char **s)
++{
++ int i = 0;
++
++ while (isdigit(**s))
++ i = i * 10 + *((*s)++) - '0';
++ return i;
++}
++
++unsigned int atou(const char *s)
++{
++ unsigned int i = 0;
++ while (isdigit(*s))
++ i = i * 10 + (*s++ - '0');
++ return i;
++}
++
++static int strnlen(const char *s, int maxlen)
++{
++ const char *es = s;
++ while (*es && maxlen) {
++ es++;
++ maxlen--;
++ }
++
++ return (es - s);
++}
++
++#define ZEROPAD 1 /* pad with zero */
++#define SIGN 2 /* unsigned/signed long */
++#define PLUS 4 /* show plus */
++#define SPACE 8 /* space if plus */
++#define LEFT 16 /* left justified */
++#define SPECIAL 32 /* 0x */
++#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
++
++#define do_div(n,base) ({ \
++int __res; \
++__res = ((unsigned long) n) % (unsigned) base; \
++n = ((unsigned long) n) / (unsigned) base; \
++__res; })
++
++static char *number(char *str, long num, int base, int size, int precision,
++ int type)
++{
++ char c, sign, tmp[66];
++ const char *digits = "0123456789abcdefghijklmnopqrstuvwxyz";
++ int i;
++
++ if (type & LARGE)
++ digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
++ if (type & LEFT)
++ type &= ~ZEROPAD;
++ if (base < 2 || base > 36)
++ return 0;
++ c = (type & ZEROPAD) ? '0' : ' ';
++ sign = 0;
++ if (type & SIGN) {
++ if (num < 0) {
++ sign = '-';
++ num = -num;
++ size--;
++ } else if (type & PLUS) {
++ sign = '+';
++ size--;
++ } else if (type & SPACE) {
++ sign = ' ';
++ size--;
++ }
++ }
++ if (type & SPECIAL) {
++ if (base == 16)
++ size -= 2;
++ else if (base == 8)
++ size--;
++ }
++ i = 0;
++ if (num == 0)
++ tmp[i++] = '0';
++ else
++ while (num != 0)
++ tmp[i++] = digits[do_div(num, base)];
++ if (i > precision)
++ precision = i;
++ size -= precision;
++ if (!(type & (ZEROPAD + LEFT)))
++ while (size-- > 0)
++ *str++ = ' ';
++ if (sign)
++ *str++ = sign;
++ if (type & SPECIAL) {
++ if (base == 8)
++ *str++ = '0';
++ else if (base == 16) {
++ *str++ = '0';
++ *str++ = digits[33];
++ }
++ }
++ if (!(type & LEFT))
++ while (size-- > 0)
++ *str++ = c;
++ while (i < precision--)
++ *str++ = '0';
++ while (i-- > 0)
++ *str++ = tmp[i];
++ while (size-- > 0)
++ *str++ = ' ';
++ return str;
++}
++
++int vsprintf(char *buf, const char *fmt, va_list args)
++{
++ int len;
++ unsigned long num;
++ int i, base;
++ char *str;
++ const char *s;
++
++ int flags; /* flags to number() */
++
++ int field_width; /* width of output field */
++ int precision; /* min. # of digits for integers; max
++ number of chars for from string */
++ int qualifier; /* 'h', 'l', or 'L' for integer fields */
++
++ for (str = buf; *fmt; ++fmt) {
++ if (*fmt != '%') {
++ *str++ = *fmt;
++ continue;
++ }
++
++ /* process flags */
++ flags = 0;
++ repeat:
++ ++fmt; /* this also skips first '%' */
++ switch (*fmt) {
++ case '-':
++ flags |= LEFT;
++ goto repeat;
++ case '+':
++ flags |= PLUS;
++ goto repeat;
++ case ' ':
++ flags |= SPACE;
++ goto repeat;
++ case '#':
++ flags |= SPECIAL;
++ goto repeat;
++ case '0':
++ flags |= ZEROPAD;
++ goto repeat;
++ }
++
++ /* get field width */
++ field_width = -1;
++ if (isdigit(*fmt))
++ field_width = skip_atoi(&fmt);
++ else if (*fmt == '*') {
++ ++fmt;
++ /* it's the next argument */
++ field_width = va_arg(args, int);
++ if (field_width < 0) {
++ field_width = -field_width;
++ flags |= LEFT;
++ }
++ }
++
++ /* get the precision */
++ precision = -1;
++ if (*fmt == '.') {
++ ++fmt;
++ if (isdigit(*fmt))
++ precision = skip_atoi(&fmt);
++ else if (*fmt == '*') {
++ ++fmt;
++ /* it's the next argument */
++ precision = va_arg(args, int);
++ }
++ if (precision < 0)
++ precision = 0;
++ }
++
++ /* get the conversion qualifier */
++ qualifier = -1;
++ if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L') {
++ qualifier = *fmt;
++ ++fmt;
++ }
++
++ /* default base */
++ base = 10;
++
++ switch (*fmt) {
++ case 'c':
++ if (!(flags & LEFT))
++ while (--field_width > 0)
++ *str++ = ' ';
++ *str++ = (unsigned char)va_arg(args, int);
++ while (--field_width > 0)
++ *str++ = ' ';
++ continue;
++
++ case 's':
++ s = va_arg(args, char *);
++ len = strnlen(s, precision);
++
++ if (!(flags & LEFT))
++ while (len < field_width--)
++ *str++ = ' ';
++ for (i = 0; i < len; ++i)
++ *str++ = *s++;
++ while (len < field_width--)
++ *str++ = ' ';
++ continue;
++
++ case 'p':
++ if (field_width == -1) {
++ field_width = 2 * sizeof(void *);
++ flags |= ZEROPAD;
++ }
++ str = number(str,
++ (unsigned long)va_arg(args, void *), 16,
++ field_width, precision, flags);
++ continue;
++
++ case 'n':
++ if (qualifier == 'l') {
++ long *ip = va_arg(args, long *);
++ *ip = (str - buf);
++ } else {
++ int *ip = va_arg(args, int *);
++ *ip = (str - buf);
++ }
++ continue;
++
++ case '%':
++ *str++ = '%';
++ continue;
++
++ /* integer number formats - set up the flags and "break" */
++ case 'o':
++ base = 8;
++ break;
++
++ case 'X':
++ flags |= LARGE;
++ case 'x':
++ base = 16;
++ break;
++
++ case 'd':
++ case 'i':
++ flags |= SIGN;
++ case 'u':
++ break;
++
++ default:
++ *str++ = '%';
++ if (*fmt)
++ *str++ = *fmt;
++ else
++ --fmt;
++ continue;
++ }
++ if (qualifier == 'l')
++ num = va_arg(args, unsigned long);
++ else if (qualifier == 'h') {
++ num = (unsigned short)va_arg(args, int);
++ if (flags & SIGN)
++ num = (short)num;
++ } else if (flags & SIGN)
++ num = va_arg(args, int);
++ else
++ num = va_arg(args, unsigned int);
++ str = number(str, num, base, field_width, precision, flags);
++ }
++ *str = '\0';
++ return str - buf;
++}
++
++int sprintf(char *buf, const char *fmt, ...)
++{
++ va_list args;
++ int i;
++
++ va_start(args, fmt);
++ i = vsprintf(buf, fmt, args);
++ va_end(args);
++ return i;
++}
++
++int printf(const char *fmt, ...)
++{
++ char printf_buf[1024];
++ va_list args;
++ int printed;
++
++ va_start(args, fmt);
++ printed = vsprintf(printf_buf, fmt, args);
++ va_end(args);
++
++ puts(printf_buf);
++
++ return printed;
++}
+diff -puN arch/i386/boot/setup.S~git-newsetup /dev/null
+--- a/arch/i386/boot/setup.S
++++ /dev/null
+@@ -1,1075 +0,0 @@
+-/*
+- * setup.S Copyright (C) 1991, 1992 Linus Torvalds
+- *
+- * setup.s is responsible for getting the system data from the BIOS,
+- * and putting them into the appropriate places in system memory.
+- * both setup.s and system has been loaded by the bootblock.
+- *
+- * This code asks the bios for memory/disk/other parameters, and
+- * puts them in a "safe" place: 0x90000-0x901FF, ie where the
+- * boot-block used to be. It is then up to the protected mode
+- * system to read them from there before the area is overwritten
+- * for buffer-blocks.
+- *
+- * Move PS/2 aux init code to psaux.c
+- * (troyer@saifr00.cfsat.Honeywell.COM) 03Oct92
+- *
+- * some changes and additional features by Christoph Niemann,
+- * March 1993/June 1994 (Christoph.Niemann@linux.org)
+- *
+- * add APM BIOS checking by Stephen Rothwell, May 1994
+- * (sfr@canb.auug.org.au)
+- *
+- * High load stuff, initrd support and position independency
+- * by Hans Lermen & Werner Almesberger, February 1996
+- * <lermen@elserv.ffm.fgan.de>, <almesber@lrc.epfl.ch>
+- *
+- * Video handling moved to video.S by Martin Mares, March 1996
+- * <mj@k332.feld.cvut.cz>
+- *
+- * Extended memory detection scheme retwiddled by orc@pell.chi.il.us (david
+- * parsons) to avoid loadlin confusion, July 1997
+- *
+- * Transcribed from Intel (as86) -> AT&T (gas) by Chris Noe, May 1999.
+- * <stiker@northlink.com>
+- *
+- * Fix to work around buggy BIOSes which don't use carry bit correctly
+- * and/or report extended memory in CX/DX for e801h memory size detection
+- * call. As a result the kernel got wrong figures. The int15/e801h docs
+- * from Ralf Brown interrupt list seem to indicate AX/BX should be used
+- * anyway. So to avoid breaking many machines (presumably there was a reason
+- * to orginally use CX/DX instead of AX/BX), we do a kludge to see
+- * if CX/DX have been changed in the e801 call and if so use AX/BX .
+- * Michael Miller, April 2001 <michaelm@mjmm.org>
+- *
+- * New A20 code ported from SYSLINUX by H. Peter Anvin. AMD Elan bugfixes
+- * by Robert Schwebel, December 2001 <robert@schwebel.de>
+- */
+-
+-#include <asm/segment.h>
+-#include <linux/utsrelease.h>
+-#include <linux/compile.h>
+-#include <asm/boot.h>
+-#include <asm/e820.h>
+-#include <asm/page.h>
+-#include <asm/setup.h>
+-
+-/* Signature words to ensure LILO loaded us right */
+-#define SIG1 0xAA55
+-#define SIG2 0x5A5A
+-
+-INITSEG = DEF_INITSEG # 0x9000, we move boot here, out of the way
+-SYSSEG = DEF_SYSSEG # 0x1000, system loaded at 0x10000 (65536).
+-SETUPSEG = DEF_SETUPSEG # 0x9020, this is the current segment
+- # ... and the former contents of CS
+-
+-DELTA_INITSEG = SETUPSEG - INITSEG # 0x0020
+-
+-.code16
+-.globl begtext, begdata, begbss, endtext, enddata, endbss
+-
+-.text
+-begtext:
+-.data
+-begdata:
+-.bss
+-begbss:
+-.text
+-
+-start:
+- jmp trampoline
+-
+-# This is the setup header, and it must start at %cs:2 (old 0x9020:2)
+-
+- .ascii "HdrS" # header signature
+- .word 0x0206 # header version number (>= 0x0105)
+- # or else old loadlin-1.5 will fail)
+-realmode_swtch: .word 0, 0 # default_switch, SETUPSEG
+-start_sys_seg: .word SYSSEG
+- .word kernel_version # pointing to kernel version string
+- # above section of header is compatible
+- # with loadlin-1.5 (header v1.5). Don't
+- # change it.
+-
+-type_of_loader: .byte 0 # = 0, old one (LILO, Loadlin,
+- # Bootlin, SYSLX, bootsect...)
+- # See Documentation/i386/boot.txt for
+- # assigned ids
+-
+-# flags, unused bits must be zero (RFU) bit within loadflags
+-loadflags:
+-LOADED_HIGH = 1 # If set, the kernel is loaded high
+-CAN_USE_HEAP = 0x80 # If set, the loader also has set
+- # heap_end_ptr to tell how much
+- # space behind setup.S can be used for
+- # heap purposes.
+- # Only the loader knows what is free
+-#ifndef __BIG_KERNEL__
+- .byte 0
+-#else
+- .byte LOADED_HIGH
+-#endif
+-
+-setup_move_size: .word 0x8000 # size to move, when setup is not
+- # loaded at 0x90000. We will move setup
+- # to 0x90000 then just before jumping
+- # into the kernel. However, only the
+- # loader knows how much data behind
+- # us also needs to be loaded.
+-
+-code32_start: # here loaders can put a different
+- # start address for 32-bit code.
+-#ifndef __BIG_KERNEL__
+- .long 0x1000 # 0x1000 = default for zImage
+-#else
+- .long 0x100000 # 0x100000 = default for big kernel
+-#endif
+-
+-ramdisk_image: .long 0 # address of loaded ramdisk image
+- # Here the loader puts the 32-bit
+- # address where it loaded the image.
+- # This only will be read by the kernel.
+-
+-ramdisk_size: .long 0 # its size in bytes
+-
+-bootsect_kludge:
+- .long 0 # obsolete
+-
+-heap_end_ptr: .word modelist+1024 # (Header version 0x0201 or later)
+- # space from here (exclusive) down to
+- # end of setup code can be used by setup
+- # for local heap purposes.
+-
+-pad1: .word 0
+-cmd_line_ptr: .long 0 # (Header version 0x0202 or later)
+- # If nonzero, a 32-bit pointer
+- # to the kernel command line.
+- # The command line should be
+- # located between the start of
+- # setup and the end of low
+- # memory (0xa0000), or it may
+- # get overwritten before it
+- # gets read. If this field is
+- # used, there is no longer
+- # anything magical about the
+- # 0x90000 segment; the setup
+- # can be located anywhere in
+- # low memory 0x10000 or higher.
+-
+-ramdisk_max: .long (-__PAGE_OFFSET-(512 << 20)-1) & 0x7fffffff
+- # (Header version 0x0203 or later)
+- # The highest safe address for
+- # the contents of an initrd
+-
+-kernel_alignment: .long CONFIG_PHYSICAL_ALIGN #physical addr alignment
+- #required for protected mode
+- #kernel
+-#ifdef CONFIG_RELOCATABLE
+-relocatable_kernel: .byte 1
+-#else
+-relocatable_kernel: .byte 0
+-#endif
+-pad2: .byte 0
+-pad3: .word 0
+-
+-cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line,
+- #added with boot protocol
+- #version 2.06
+-
+-trampoline: call start_of_setup
+- .align 16
+- # The offset at this point is 0x240
+- .space (0xeff-0x240+1) # E820 & EDD space (ending at 0xeff)
+-# End of setup header #####################################################
+-
+-start_of_setup:
+-# Bootlin depends on this being done early
+- movw $0x01500, %ax
+- movb $0x81, %dl
+- int $0x13
+-
+-#ifdef SAFE_RESET_DISK_CONTROLLER
+-# Reset the disk controller.
+- movw $0x0000, %ax
+- movb $0x80, %dl
+- int $0x13
+-#endif
+-
+-# Set %ds = %cs, we know that SETUPSEG = %cs at this point
+- movw %cs, %ax # aka SETUPSEG
+- movw %ax, %ds
+-# Check signature at end of setup
+- cmpw $SIG1, setup_sig1
+- jne bad_sig
+-
+- cmpw $SIG2, setup_sig2
+- jne bad_sig
+-
+- jmp good_sig1
+-
+-# Routine to print asciiz string at ds:si
+-prtstr:
+- lodsb
+- andb %al, %al
+- jz fin
+-
+- call prtchr
+- jmp prtstr
+-
+-fin: ret
+-
+-# Space printing
+-prtsp2: call prtspc # Print double space
+-prtspc: movb $0x20, %al # Print single space (note: fall-thru)
+-
+-# Part of above routine, this one just prints ascii al
+-prtchr: pushw %ax
+- pushw %cx
+- movw $7,%bx
+- movw $0x01, %cx
+- movb $0x0e, %ah
+- int $0x10
+- popw %cx
+- popw %ax
+- ret
+-
+-beep: movb $0x07, %al
+- jmp prtchr
+-
+-no_sig_mess: .string "No setup signature found ..."
+-
+-good_sig1:
+- jmp good_sig
+-
+-# We now have to find the rest of the setup code/data
+-bad_sig:
+- movw %cs, %ax # SETUPSEG
+- subw $DELTA_INITSEG, %ax # INITSEG
+- movw %ax, %ds
+- xorb %bh, %bh
+- movb (497), %bl # get setup sect from bootsect
+- subw $4, %bx # LILO loads 4 sectors of setup
+- shlw $8, %bx # convert to words (1sect=2^8 words)
+- movw %bx, %cx
+- shrw $3, %bx # convert to segment
+- addw $SYSSEG, %bx
+- movw %bx, %cs:start_sys_seg
+-# Move rest of setup code/data to here
+- movw $2048, %di # four sectors loaded by LILO
+- subw %si, %si
+- pushw %cs
+- popw %es
+- movw $SYSSEG, %ax
+- movw %ax, %ds
+- rep
+- movsw
+- movw %cs, %ax # aka SETUPSEG
+- movw %ax, %ds
+- cmpw $SIG1, setup_sig1
+- jne no_sig
+-
+- cmpw $SIG2, setup_sig2
+- jne no_sig
+-
+- jmp good_sig
+-
+-no_sig:
+- lea no_sig_mess, %si
+- call prtstr
+-
+-no_sig_loop:
+- hlt
+- jmp no_sig_loop
+-
+-good_sig:
+- movw %cs, %ax # aka SETUPSEG
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- movw %ax, %ds
+-# Check if an old loader tries to load a big-kernel
+- testb $LOADED_HIGH, %cs:loadflags # Do we have a big kernel?
+- jz loader_ok # No, no danger for old loaders.
+-
+- cmpb $0, %cs:type_of_loader # Do we have a loader that
+- # can deal with us?
+- jnz loader_ok # Yes, continue.
+-
+- pushw %cs # No, we have an old loader,
+- popw %ds # die.
+- lea loader_panic_mess, %si
+- call prtstr
+-
+- jmp no_sig_loop
+-
+-loader_panic_mess: .string "Wrong loader, giving up..."
+-
+-# check minimum cpuid
+-# we do this here because it is the last place we can actually
+-# show a user visible error message. Later the video modus
+-# might be already messed up.
+-loader_ok:
+- call verify_cpu
+- testl %eax,%eax
+- jz cpu_ok
+- movw %cs,%ax # aka SETUPSEG
+- movw %ax,%ds
+- lea cpu_panic_mess,%si
+- call prtstr
+-1: jmp 1b
+-
+-cpu_panic_mess:
+- .asciz "PANIC: CPU too old for this kernel."
+-
+-#include "../kernel/verify_cpu.S"
+-
+-cpu_ok:
+-# Get memory size (extended mem, kB)
+-
+- xorl %eax, %eax
+- movl %eax, (0x1e0)
+-#ifndef STANDARD_MEMORY_BIOS_CALL
+- movb %al, (E820NR)
+-# Try three different memory detection schemes. First, try
+-# e820h, which lets us assemble a memory map, then try e801h,
+-# which returns a 32-bit memory size, and finally 88h, which
+-# returns 0-64m
+-
+-# method E820H:
+-# the memory map from hell. e820h returns memory classified into
+-# a whole bunch of different types, and allows memory holes and
+-# everything. We scan through this memory map and build a list
+-# of the first 32 memory areas, which we return at [E820MAP].
+-# This is documented at http://www.acpi.info/, in the ACPI 2.0 specification.
+-
+-#define SMAP 0x534d4150
+-
+-meme820:
+- xorl %ebx, %ebx # continuation counter
+- movw $E820MAP, %di # point into the whitelist
+- # so we can have the bios
+- # directly write into it.
+-
+-jmpe820:
+- movl $0x0000e820, %eax # e820, upper word zeroed
+- movl $SMAP, %edx # ascii 'SMAP'
+- movl $20, %ecx # size of the e820rec
+- pushw %ds # data record.
+- popw %es
+- int $0x15 # make the call
+- jc bail820 # fall to e801 if it fails
+-
+- cmpl $SMAP, %eax # check the return is `SMAP'
+- jne bail820 # fall to e801 if it fails
+-
+-# cmpl $1, 16(%di) # is this usable memory?
+-# jne again820
+-
+- # If this is usable memory, we save it by simply advancing %di by
+- # sizeof(e820rec).
+- #
+-good820:
+- movb (E820NR), %al # up to 128 entries
+- cmpb $E820MAX, %al
+- jae bail820
+-
+- incb (E820NR)
+- movw %di, %ax
+- addw $20, %ax
+- movw %ax, %di
+-again820:
+- cmpl $0, %ebx # check to see if
+- jne jmpe820 # %ebx is set to EOF
+-bail820:
+-
+-
+-# method E801H:
+-# memory size is in 1k chunksizes, to avoid confusing loadlin.
+-# we store the 0xe801 memory size in a completely different place,
+-# because it will most likely be longer than 16 bits.
+-# (use 1e0 because that's what Larry Augustine uses in his
+-# alternative new memory detection scheme, and it's sensible
+-# to write everything into the same place.)
+-
+-meme801:
+- stc # fix to work around buggy
+- xorw %cx,%cx # BIOSes which don't clear/set
+- xorw %dx,%dx # carry on pass/error of
+- # e801h memory size call
+- # or merely pass cx,dx though
+- # without changing them.
+- movw $0xe801, %ax
+- int $0x15
+- jc mem88
+-
+- cmpw $0x0, %cx # Kludge to handle BIOSes
+- jne e801usecxdx # which report their extended
+- cmpw $0x0, %dx # memory in AX/BX rather than
+- jne e801usecxdx # CX/DX. The spec I have read
+- movw %ax, %cx # seems to indicate AX/BX
+- movw %bx, %dx # are more reasonable anyway...
+-
+-e801usecxdx:
+- andl $0xffff, %edx # clear sign extend
+- shll $6, %edx # and go from 64k to 1k chunks
+- movl %edx, (0x1e0) # store extended memory size
+- andl $0xffff, %ecx # clear sign extend
+- addl %ecx, (0x1e0) # and add lower memory into
+- # total size.
+-
+-# Ye Olde Traditional Methode. Returns the memory size (up to 16mb or
+-# 64mb, depending on the bios) in ax.
+-mem88:
+-
+-#endif
+- movb $0x88, %ah
+- int $0x15
+- movw %ax, (2)
+-
+-# Set the keyboard repeat rate to the max
+- movw $0x0305, %ax
+- xorw %bx, %bx
+- int $0x16
+-
+-# Check for video adapter and its parameters and allow the
+-# user to browse video modes.
+- call video # NOTE: we need %ds pointing
+- # to bootsector
+-
+-# Get hd0 data...
+- xorw %ax, %ax
+- movw %ax, %ds
+- ldsw (4 * 0x41), %si
+- movw %cs, %ax # aka SETUPSEG
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- pushw %ax
+- movw %ax, %es
+- movw $0x0080, %di
+- movw $0x10, %cx
+- pushw %cx
+- cld
+- rep
+- movsb
+-# Get hd1 data...
+- xorw %ax, %ax
+- movw %ax, %ds
+- ldsw (4 * 0x46), %si
+- popw %cx
+- popw %es
+- movw $0x0090, %di
+- rep
+- movsb
+-# Check that there IS a hd1 :-)
+- movw $0x01500, %ax
+- movb $0x81, %dl
+- int $0x13
+- jc no_disk1
+-
+- cmpb $3, %ah
+- je is_disk1
+-
+-no_disk1:
+- movw %cs, %ax # aka SETUPSEG
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- movw %ax, %es
+- movw $0x0090, %di
+- movw $0x10, %cx
+- xorw %ax, %ax
+- cld
+- rep
+- stosb
+-is_disk1:
+-# check for Micro Channel (MCA) bus
+- movw %cs, %ax # aka SETUPSEG
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- movw %ax, %ds
+- xorw %ax, %ax
+- movw %ax, (0xa0) # set table length to 0
+- movb $0xc0, %ah
+- stc
+- int $0x15 # moves feature table to es:bx
+- jc no_mca
+-
+- pushw %ds
+- movw %es, %ax
+- movw %ax, %ds
+- movw %cs, %ax # aka SETUPSEG
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- movw %ax, %es
+- movw %bx, %si
+- movw $0xa0, %di
+- movw (%si), %cx
+- addw $2, %cx # table length is a short
+- cmpw $0x10, %cx
+- jc sysdesc_ok
+-
+- movw $0x10, %cx # we keep only first 16 bytes
+-sysdesc_ok:
+- rep
+- movsb
+- popw %ds
+-no_mca:
+-#ifdef CONFIG_X86_VOYAGER
+- movb $0xff, 0x40 # flag on config found
+- movb $0xc0, %al
+- mov $0xff, %ah
+- int $0x15 # put voyager config info at es:di
+- jc no_voyager
+- movw $0x40, %si # place voyager info in apm table
+- cld
+- movw $7, %cx
+-voyager_rep:
+- movb %es:(%di), %al
+- movb %al,(%si)
+- incw %di
+- incw %si
+- decw %cx
+- jnz voyager_rep
+-no_voyager:
+-#endif
+-# Check for PS/2 pointing device
+- movw %cs, %ax # aka SETUPSEG
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- movw %ax, %ds
+- movb $0, (0x1ff) # default is no pointing device
+- int $0x11 # int 0x11: equipment list
+- testb $0x04, %al # check if mouse installed
+- jz no_psmouse
+-
+- movb $0xAA, (0x1ff) # device present
+-no_psmouse:
+-
+-#if defined(CONFIG_X86_SPEEDSTEP_SMI) || defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
+- movl $0x0000E980, %eax # IST Support
+- movl $0x47534943, %edx # Request value
+- int $0x15
+-
+- movl %eax, (96)
+- movl %ebx, (100)
+- movl %ecx, (104)
+- movl %edx, (108)
+-#endif
+-
+-#if defined(CONFIG_APM) || defined(CONFIG_APM_MODULE)
+-# Then check for an APM BIOS...
+- # %ds points to the bootsector
+- movw $0, 0x40 # version = 0 means no APM BIOS
+- movw $0x05300, %ax # APM BIOS installation check
+- xorw %bx, %bx
+- int $0x15
+- jc done_apm_bios # Nope, no APM BIOS
+-
+- cmpw $0x0504d, %bx # Check for "PM" signature
+- jne done_apm_bios # No signature, no APM BIOS
+-
+- andw $0x02, %cx # Is 32 bit supported?
+- je done_apm_bios # No 32-bit, no (good) APM BIOS
+-
+- movw $0x05304, %ax # Disconnect first just in case
+- xorw %bx, %bx
+- int $0x15 # ignore return code
+- movw $0x05303, %ax # 32 bit connect
+- xorl %ebx, %ebx
+- xorw %cx, %cx # paranoia :-)
+- xorw %dx, %dx # ...
+- xorl %esi, %esi # ...
+- xorw %di, %di # ...
+- int $0x15
+- jc no_32_apm_bios # Ack, error.
+-
+- movw %ax, (66) # BIOS code segment
+- movl %ebx, (68) # BIOS entry point offset
+- movw %cx, (72) # BIOS 16 bit code segment
+- movw %dx, (74) # BIOS data segment
+- movl %esi, (78) # BIOS code segment lengths
+- movw %di, (82) # BIOS data segment length
+-# Redo the installation check as the 32 bit connect
+-# modifies the flags returned on some BIOSs
+- movw $0x05300, %ax # APM BIOS installation check
+- xorw %bx, %bx
+- xorw %cx, %cx # paranoia
+- int $0x15
+- jc apm_disconnect # error -> shouldn't happen
+-
+- cmpw $0x0504d, %bx # check for "PM" signature
+- jne apm_disconnect # no sig -> shouldn't happen
+-
+- movw %ax, (64) # record the APM BIOS version
+- movw %cx, (76) # and flags
+- jmp done_apm_bios
+-
+-apm_disconnect: # Tidy up
+- movw $0x05304, %ax # Disconnect
+- xorw %bx, %bx
+- int $0x15 # ignore return code
+-
+- jmp done_apm_bios
+-
+-no_32_apm_bios:
+- andw $0xfffd, (76) # remove 32 bit support bit
+-done_apm_bios:
+-#endif
+-
+-#include "edd.S"
+-
+-# Now we want to move to protected mode ...
+- cmpw $0, %cs:realmode_swtch
+- jz rmodeswtch_normal
+-
+- lcall *%cs:realmode_swtch
+-
+- jmp rmodeswtch_end
+-
+-rmodeswtch_normal:
+- pushw %cs
+- call default_switch
+-
+-rmodeswtch_end:
+-# Now we move the system to its rightful place ... but we check if we have a
+-# big-kernel. In that case we *must* not move it ...
+- testb $LOADED_HIGH, %cs:loadflags
+- jz do_move0 # .. then we have a normal low
+- # loaded zImage
+- # .. or else we have a high
+- # loaded bzImage
+- jmp end_move # ... and we skip moving
+-
+-do_move0:
+- movw $0x100, %ax # start of destination segment
+- movw %cs, %bp # aka SETUPSEG
+- subw $DELTA_INITSEG, %bp # aka INITSEG
+- movw %cs:start_sys_seg, %bx # start of source segment
+- cld
+-do_move:
+- movw %ax, %es # destination segment
+- incb %ah # instead of add ax,#0x100
+- movw %bx, %ds # source segment
+- addw $0x100, %bx
+- subw %di, %di
+- subw %si, %si
+- movw $0x800, %cx
+- rep
+- movsw
+- cmpw %bp, %bx # assume start_sys_seg > 0x200,
+- # so we will perhaps read one
+- # page more than needed, but
+- # never overwrite INITSEG
+- # because destination is a
+- # minimum one page below source
+- jb do_move
+-
+-end_move:
+-# then we load the segment descriptors
+- movw %cs, %ax # aka SETUPSEG
+- movw %ax, %ds
+-
+-# Check whether we need to be downward compatible with version <=201
+- cmpl $0, cmd_line_ptr
+- jne end_move_self # loader uses version >=202 features
+- cmpb $0x20, type_of_loader
+- je end_move_self # bootsect loader, we know of it
+-
+-# Boot loader doesnt support boot protocol version 2.02.
+-# If we have our code not at 0x90000, we need to move it there now.
+-# We also then need to move the params behind it (commandline)
+-# Because we would overwrite the code on the current IP, we move
+-# it in two steps, jumping high after the first one.
+- movw %cs, %ax
+- cmpw $SETUPSEG, %ax
+- je end_move_self
+-
+- cli # make sure we really have
+- # interrupts disabled !
+- # because after this the stack
+- # should not be used
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- movw %ss, %dx
+- cmpw %ax, %dx
+- jb move_self_1
+-
+- addw $INITSEG, %dx
+- subw %ax, %dx # this will go into %ss after
+- # the move
+-move_self_1:
+- movw %ax, %ds
+- movw $INITSEG, %ax # real INITSEG
+- movw %ax, %es
+- movw %cs:setup_move_size, %cx
+- std # we have to move up, so we use
+- # direction down because the
+- # areas may overlap
+- movw %cx, %di
+- decw %di
+- movw %di, %si
+- subw $move_self_here+0x200, %cx
+- rep
+- movsb
+- ljmp $SETUPSEG, $move_self_here
+-
+-move_self_here:
+- movw $move_self_here+0x200, %cx
+- rep
+- movsb
+- movw $SETUPSEG, %ax
+- movw %ax, %ds
+- movw %dx, %ss
+-end_move_self: # now we are at the right place
+-
+-#
+-# Enable A20. This is at the very best an annoying procedure.
+-# A20 code ported from SYSLINUX 1.52-1.63 by H. Peter Anvin.
+-# AMD Elan bug fix by Robert Schwebel.
+-#
+-
+-#if defined(CONFIG_X86_ELAN)
+- movb $0x02, %al # alternate A20 gate
+- outb %al, $0x92 # this works on SC410/SC520
+-a20_elan_wait:
+- call a20_test
+- jz a20_elan_wait
+- jmp a20_done
+-#endif
+-
+-
+-A20_TEST_LOOPS = 32 # Iterations per wait
+-A20_ENABLE_LOOPS = 255 # Total loops to try
+-
+-
+-#ifndef CONFIG_X86_VOYAGER
+-a20_try_loop:
+-
+- # First, see if we are on a system with no A20 gate.
+-a20_none:
+- call a20_test
+- jnz a20_done
+-
+- # Next, try the BIOS (INT 0x15, AX=0x2401)
+-a20_bios:
+- movw $0x2401, %ax
+- pushfl # Be paranoid about flags
+- int $0x15
+- popfl
+-
+- call a20_test
+- jnz a20_done
+-
+- # Try enabling A20 through the keyboard controller
+-#endif /* CONFIG_X86_VOYAGER */
+-a20_kbc:
+- call empty_8042
+-
+-#ifndef CONFIG_X86_VOYAGER
+- call a20_test # Just in case the BIOS worked
+- jnz a20_done # but had a delayed reaction.
+-#endif
+-
+- movb $0xD1, %al # command write
+- outb %al, $0x64
+- call empty_8042
+-
+- movb $0xDF, %al # A20 on
+- outb %al, $0x60
+- call empty_8042
+-
+-#ifndef CONFIG_X86_VOYAGER
+- # Wait until a20 really *is* enabled; it can take a fair amount of
+- # time on certain systems; Toshiba Tecras are known to have this
+- # problem.
+-a20_kbc_wait:
+- xorw %cx, %cx
+-a20_kbc_wait_loop:
+- call a20_test
+- jnz a20_done
+- loop a20_kbc_wait_loop
+-
+- # Final attempt: use "configuration port A"
+-a20_fast:
+- inb $0x92, %al # Configuration Port A
+- orb $0x02, %al # "fast A20" version
+- andb $0xFE, %al # don't accidentally reset
+- outb %al, $0x92
+-
+- # Wait for configuration port A to take effect
+-a20_fast_wait:
+- xorw %cx, %cx
+-a20_fast_wait_loop:
+- call a20_test
+- jnz a20_done
+- loop a20_fast_wait_loop
+-
+- # A20 is still not responding. Try frobbing it again.
+- #
+- decb (a20_tries)
+- jnz a20_try_loop
+-
+- movw $a20_err_msg, %si
+- call prtstr
+-
+-a20_die:
+- hlt
+- jmp a20_die
+-
+-a20_tries:
+- .byte A20_ENABLE_LOOPS
+-
+-a20_err_msg:
+- .ascii "linux: fatal error: A20 gate not responding!"
+- .byte 13, 10, 0
+-
+- # If we get here, all is good
+-a20_done:
+-
+-#endif /* CONFIG_X86_VOYAGER */
+-# set up gdt and idt and 32bit start address
+- lidt idt_48 # load idt with 0,0
+- xorl %eax, %eax # Compute gdt_base
+- movw %ds, %ax # (Convert %ds:gdt to a linear ptr)
+- shll $4, %eax
+- addl %eax, code32
+- addl $gdt, %eax
+- movl %eax, (gdt_48+2)
+- lgdt gdt_48 # load gdt with whatever is
+- # appropriate
+-
+-# make sure any possible coprocessor is properly reset..
+- xorw %ax, %ax
+- outb %al, $0xf0
+- call delay
+-
+- outb %al, $0xf1
+- call delay
+-
+-# well, that went ok, I hope. Now we mask all interrupts - the rest
+-# is done in init_IRQ().
+- movb $0xFF, %al # mask all interrupts for now
+- outb %al, $0xA1
+- call delay
+-
+- movb $0xFB, %al # mask all irq's but irq2 which
+- outb %al, $0x21 # is cascaded
+-
+-# Well, that certainly wasn't fun :-(. Hopefully it works, and we don't
+-# need no steenking BIOS anyway (except for the initial loading :-).
+-# The BIOS-routine wants lots of unnecessary data, and it's less
+-# "interesting" anyway. This is how REAL programmers do it.
+-#
+-# Well, now's the time to actually move into protected mode. To make
+-# things as simple as possible, we do no register set-up or anything,
+-# we let the gnu-compiled 32-bit programs do that. We just jump to
+-# absolute address 0x1000 (or the loader supplied one),
+-# in 32-bit protected mode.
+-#
+-# Note that the short jump isn't strictly needed, although there are
+-# reasons why it might be a good idea. It won't hurt in any case.
+- movw $1, %ax # protected mode (PE) bit
+- lmsw %ax # This is it!
+- jmp flush_instr
+-
+-flush_instr:
+- xorw %bx, %bx # Flag to indicate a boot
+- xorl %esi, %esi # Pointer to real-mode code
+- movw %cs, %si
+- subw $DELTA_INITSEG, %si
+- shll $4, %esi # Convert to 32-bit pointer
+-
+-# jump to startup_32 in arch/i386/boot/compressed/head.S
+-#
+-# NOTE: For high loaded big kernels we need a
+-# jmpi 0x100000,__BOOT_CS
+-#
+-# but we yet haven't reloaded the CS register, so the default size
+-# of the target offset still is 16 bit.
+-# However, using an operand prefix (0x66), the CPU will properly
+-# take our 48 bit far pointer. (INTeL 80386 Programmer's Reference
+-# Manual, Mixing 16-bit and 32-bit code, page 16-6)
+-
+- .byte 0x66, 0xea # prefix + jmpi-opcode
+-code32: .long startup_32 # will be set to %cs+startup_32
+- .word __BOOT_CS
+-.code32
+-startup_32:
+- movl $(__BOOT_DS), %eax
+- movl %eax, %ds
+- movl %eax, %es
+- movl %eax, %fs
+- movl %eax, %gs
+- movl %eax, %ss
+-
+- xorl %eax, %eax
+-1: incl %eax # check that A20 really IS enabled
+- movl %eax, 0x00000000 # loop forever if it isn't
+- cmpl %eax, 0x00100000
+- je 1b
+-
+- # Jump to the 32bit entry point
+- jmpl *(code32_start - start + (DELTA_INITSEG << 4))(%esi)
+-.code16
+-
+-# Here's a bunch of information about your current kernel..
+-kernel_version: .ascii UTS_RELEASE
+- .ascii " ("
+- .ascii LINUX_COMPILE_BY
+- .ascii "@"
+- .ascii LINUX_COMPILE_HOST
+- .ascii ") "
+- .ascii UTS_VERSION
+- .byte 0
+-
+-# This is the default real mode switch routine.
+-# to be called just before protected mode transition
+-default_switch:
+- cli # no interrupts allowed !
+- movb $0x80, %al # disable NMI for bootup
+- # sequence
+- outb %al, $0x70
+- lret
+-
+-
+-#ifndef CONFIG_X86_VOYAGER
+-# This routine tests whether or not A20 is enabled. If so, it
+-# exits with zf = 0.
+-#
+-# The memory address used, 0x200, is the int $0x80 vector, which
+-# should be safe.
+-
+-A20_TEST_ADDR = 4*0x80
+-
+-a20_test:
+- pushw %cx
+- pushw %ax
+- xorw %cx, %cx
+- movw %cx, %fs # Low memory
+- decw %cx
+- movw %cx, %gs # High memory area
+- movw $A20_TEST_LOOPS, %cx
+- movw %fs:(A20_TEST_ADDR), %ax
+- pushw %ax
+-a20_test_wait:
+- incw %ax
+- movw %ax, %fs:(A20_TEST_ADDR)
+- call delay # Serialize and make delay constant
+- cmpw %gs:(A20_TEST_ADDR+0x10), %ax
+- loope a20_test_wait
+-
+- popw %fs:(A20_TEST_ADDR)
+- popw %ax
+- popw %cx
+- ret
+-
+-#endif /* CONFIG_X86_VOYAGER */
+-
+-# This routine checks that the keyboard command queue is empty
+-# (after emptying the output buffers)
+-#
+-# Some machines have delusions that the keyboard buffer is always full
+-# with no keyboard attached...
+-#
+-# If there is no keyboard controller, we will usually get 0xff
+-# to all the reads. With each IO taking a microsecond and
+-# a timeout of 100,000 iterations, this can take about half a
+-# second ("delay" == outb to port 0x80). That should be ok,
+-# and should also be plenty of time for a real keyboard controller
+-# to empty.
+-#
+-
+-empty_8042:
+- pushl %ecx
+- movl $100000, %ecx
+-
+-empty_8042_loop:
+- decl %ecx
+- jz empty_8042_end_loop
+-
+- call delay
+-
+- inb $0x64, %al # 8042 status port
+- testb $1, %al # output buffer?
+- jz no_output
+-
+- call delay
+- inb $0x60, %al # read it
+- jmp empty_8042_loop
+-
+-no_output:
+- testb $2, %al # is input buffer full?
+- jnz empty_8042_loop # yes - loop
+-empty_8042_end_loop:
+- popl %ecx
+- ret
+-
+-# Read the cmos clock. Return the seconds in al
+-gettime:
+- pushw %cx
+- movb $0x02, %ah
+- int $0x1a
+- movb %dh, %al # %dh contains the seconds
+- andb $0x0f, %al
+- movb %dh, %ah
+- movb $0x04, %cl
+- shrb %cl, %ah
+- aad
+- popw %cx
+- ret
+-
+-# Delay is needed after doing I/O
+-delay:
+- outb %al,$0x80
+- ret
+-
+-# Descriptor tables
+-#
+-# NOTE: The intel manual says gdt should be sixteen bytes aligned for
+-# efficiency reasons. However, there are machines which are known not
+-# to boot with misaligned GDTs, so alter this at your peril! If you alter
+-# GDT_ENTRY_BOOT_CS (in asm/segment.h) remember to leave at least two
+-# empty GDT entries (one for NULL and one reserved).
+-#
+-# NOTE: On some CPUs, the GDT must be 8 byte aligned. This is
+-# true for the Voyager Quad CPU card which will not boot without
+-# This directive. 16 byte aligment is recommended by intel.
+-#
+- .align 16
+-gdt:
+- .fill GDT_ENTRY_BOOT_CS,8,0
+-
+- .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
+- .word 0 # base address = 0
+- .word 0x9A00 # code read/exec
+- .word 0x00CF # granularity = 4096, 386
+- # (+5th nibble of limit)
+-
+- .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
+- .word 0 # base address = 0
+- .word 0x9200 # data read/write
+- .word 0x00CF # granularity = 4096, 386
+- # (+5th nibble of limit)
+-gdt_end:
+- .align 4
+-
+- .word 0 # alignment byte
+-idt_48:
+- .word 0 # idt limit = 0
+- .word 0, 0 # idt base = 0L
+-
+- .word 0 # alignment byte
+-gdt_48:
+- .word gdt_end - gdt - 1 # gdt limit
+- .word 0, 0 # gdt base (filled in later)
+-
+-# Include video setup & detection code
+-
+-#include "video.S"
+-
+-# Setup signature -- must be last
+-setup_sig1: .word SIG1
+-setup_sig2: .word SIG2
+-
+-# After this point, there is some free space which is used by the video mode
+-# handling code to store the temporary mode table (not used by the kernel).
+-
+-modelist:
+-
+-.text
+-endtext:
+-.data
+-enddata:
+-.bss
+-endbss:
+diff -puN /dev/null arch/i386/boot/setup.ld
+--- /dev/null
++++ a/arch/i386/boot/setup.ld
+@@ -0,0 +1,54 @@
++/*
++ * setup.ld
++ *
++ * Linker script for the i386 setup code
++ */
++OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
++OUTPUT_ARCH(i386)
++ENTRY(_start)
++
++SECTIONS
++{
++ . = 0;
++ .bstext : { *(.bstext) }
++ .bsdata : { *(.bsdata) }
++
++ . = 497;
++ .header : { *(.header) }
++ .inittext : { *(.inittext) }
++ .initdata : { *(.initdata) }
++ .text : { *(.text*) }
++
++ . = ALIGN(16);
++ .rodata : { *(.rodata*) }
++
++ .videocards : {
++ video_cards = .;
++ *(.videocards)
++ video_cards_end = .;
++ }
++
++ . = ALIGN(16);
++ .data : { *(.data*) }
++
++ .signature : {
++ setup_sig = .;
++ LONG(0x5a5aaa55)
++ }
++
++
++ . = ALIGN(16);
++ .bss :
++ {
++ __bss_start = .;
++ *(.bss)
++ __bss_end = .;
++ }
++ . = ALIGN(16);
++ _end = .;
++
++ /DISCARD/ : { *(.note*) }
++
++ . = ASSERT(_end <= 0x8000, "Setup too big!");
++ . = ASSERT(hdr == 0x1f1, "The setup header has the wrong offset!");
++}
+diff -puN /dev/null arch/i386/boot/string.c
+--- /dev/null
++++ a/arch/i386/boot/string.c
+@@ -0,0 +1,34 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/string.c
++ *
++ * Very basic string functions
++ */
++
++#include "boot.h"
++#include <linux/edd.h>
++
++int strcmp(const char *str1, const char *str2)
++{
++ const unsigned char *s1 = (const unsigned char *)str1;
++ const unsigned char *s2 = (const unsigned char *)str2;
++ int delta = 0;
++
++ while (*s1 || *s2) {
++ delta = *s2 - *s1;
++ if (delta)
++ return delta;
++ s1++;
++ s2++;
++ }
++ return 0;
++}
+diff -puN arch/i386/boot/tools/build.c~git-newsetup arch/i386/boot/tools/build.c
+--- a/arch/i386/boot/tools/build.c~git-newsetup
++++ a/arch/i386/boot/tools/build.c
+@@ -1,13 +1,12 @@
+ /*
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ * Copyright (C) 1997 Martin Mares
++ * Copyright (C) 2007 H. Peter Anvin
+ */
+
+ /*
+ * This file builds a disk-image from three different files:
+ *
+- * - bootsect: compatibility mbr which prints an error message if
+- * someone tries to boot the kernel directly.
+ * - setup: 8086 machine code, sets up system parm
+ * - system: 80386 code for actual system
+ *
+@@ -21,6 +20,7 @@
+ * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996
+ * Cross compiling fixes by Gertjan van Wingerde, July 1996
+ * Rewritten by Martin Mares, April 1997
++ * Substantially overhauled by H. Peter Anvin, April 2007
+ */
+
+ #include <stdio.h>
+@@ -32,23 +32,25 @@
+ #include <sys/sysmacros.h>
+ #include <unistd.h>
+ #include <fcntl.h>
++#include <sys/mman.h>
+ #include <asm/boot.h>
+
+-typedef unsigned char byte;
+-typedef unsigned short word;
+-typedef unsigned long u32;
++typedef unsigned char u8;
++typedef unsigned short u16;
++typedef unsigned long u32;
+
+ #define DEFAULT_MAJOR_ROOT 0
+ #define DEFAULT_MINOR_ROOT 0
+
+-/* Minimal number of setup sectors (see also bootsect.S) */
+-#define SETUP_SECTS 4
++/* Minimal number of setup sectors */
++#define SETUP_SECT_MIN 5
++#define SETUP_SECT_MAX 64
+
+-byte buf[1024];
+-int fd;
++/* This must be large enough to hold the entire setup */
++u8 buf[SETUP_SECT_MAX*512];
+ int is_big_kernel;
+
+-void die(const char * str, ...)
++static void die(const char * str, ...)
+ {
+ va_list args;
+ va_start(args, str);
+@@ -57,15 +59,9 @@ void die(const char * str, ...)
+ exit(1);
+ }
+
+-void file_open(const char *name)
++static void usage(void)
+ {
+- if ((fd = open(name, O_RDONLY, 0)) < 0)
+- die("Unable to open `%s': %m", name);
+-}
+-
+-void usage(void)
+-{
+- die("Usage: build [-b] bootsect setup system [rootdev] [> image]");
++ die("Usage: build [-b] setup system [rootdev] [> image]");
+ }
+
+ int main(int argc, char ** argv)
+@@ -73,27 +69,30 @@ int main(int argc, char ** argv)
+ unsigned int i, sz, setup_sectors;
+ int c;
+ u32 sys_size;
+- byte major_root, minor_root;
++ u8 major_root, minor_root;
+ struct stat sb;
++ FILE *file;
++ int fd;
++ void *kernel;
+
+ if (argc > 2 && !strcmp(argv[1], "-b"))
+ {
+ is_big_kernel = 1;
+ argc--, argv++;
+ }
+- if ((argc < 4) || (argc > 5))
++ if ((argc < 3) || (argc > 4))
+ usage();
+- if (argc > 4) {
+- if (!strcmp(argv[4], "CURRENT")) {
++ if (argc > 3) {
++ if (!strcmp(argv[3], "CURRENT")) {
+ if (stat("/", &sb)) {
+ perror("/");
+ die("Couldn't stat /");
+ }
+ major_root = major(sb.st_dev);
+ minor_root = minor(sb.st_dev);
+- } else if (strcmp(argv[4], "FLOPPY")) {
+- if (stat(argv[4], &sb)) {
+- perror(argv[4]);
++ } else if (strcmp(argv[3], "FLOPPY")) {
++ if (stat(argv[3], &sb)) {
++ perror(argv[3]);
+ die("Couldn't stat root device.");
+ }
+ major_root = major(sb.st_rdev);
+@@ -108,79 +107,62 @@ int main(int argc, char ** argv)
+ }
+ fprintf(stderr, "Root device is (%d, %d)\n", major_root, minor_root);
+
+- file_open(argv[1]);
+- i = read(fd, buf, sizeof(buf));
+- fprintf(stderr,"Boot sector %d bytes.\n",i);
+- if (i != 512)
+- die("Boot block must be exactly 512 bytes");
++ /* Copy the setup code */
++ file = fopen(argv[1], "r");
++ if (!file)
++ die("Unable to open `%s': %m", argv[1]);
++ c = fread(buf, 1, sizeof(buf), file);
++ if (ferror(file))
++ die("read-error on `setup'");
++ if (c < 1024)
++ die("The setup must be at least 1024 bytes");
+ if (buf[510] != 0x55 || buf[511] != 0xaa)
+ die("Boot block hasn't got boot flag (0xAA55)");
++ fclose(file);
++
++ /* Pad unused space with zeros */
++ setup_sectors = (c + 511) / 512;
++ if (setup_sectors < SETUP_SECT_MIN)
++ setup_sectors = SETUP_SECT_MIN;
++ i = setup_sectors*512;
++ memset(buf+c, 0, i-c);
++
++ /* Set the default root device */
+ buf[508] = minor_root;
+ buf[509] = major_root;
+- if (write(1, buf, 512) != 512)
+- die("Write call failed");
+- close (fd);
+-
+- file_open(argv[2]); /* Copy the setup code */
+- for (i=0 ; (c=read(fd, buf, sizeof(buf)))>0 ; i+=c )
+- if (write(1, buf, c) != c)
+- die("Write call failed");
+- if (c != 0)
+- die("read-error on `setup'");
+- close (fd);
+
+- setup_sectors = (i + 511) / 512; /* Pad unused space with zeros */
+- /* for compatibility with ancient versions of LILO. */
+- if (setup_sectors < SETUP_SECTS)
+- setup_sectors = SETUP_SECTS;
+- fprintf(stderr, "Setup is %d bytes.\n", i);
+- memset(buf, 0, sizeof(buf));
+- while (i < setup_sectors * 512) {
+- c = setup_sectors * 512 - i;
+- if (c > sizeof(buf))
+- c = sizeof(buf);
+- if (write(1, buf, c) != c)
+- die("Write call failed");
+- i += c;
+- }
++ fprintf(stderr, "Setup is %d bytes (padded to %d bytes).\n", c, i);
+
+- file_open(argv[3]);
+- if (fstat (fd, &sb))
+- die("Unable to stat `%s': %m", argv[3]);
++ /* Open and stat the kernel file */
++ fd = open(argv[2], O_RDONLY);
++ if (fd < 0)
++ die("Unable to open `%s': %m", argv[2]);
++ if (fstat(fd, &sb))
++ die("Unable to stat `%s': %m", argv[2]);
+ sz = sb.st_size;
+- fprintf (stderr, "System is %d kB\n", sz/1024);
++ fprintf (stderr, "System is %d kB\n", (sz+1023)/1024);
++ kernel = mmap(NULL, sz, PROT_READ, MAP_SHARED, fd, 0);
++ if (kernel == MAP_FAILED)
++ die("Unable to mmap '%s': %m", argv[2]);
+ sys_size = (sz + 15) / 16;
+ if (!is_big_kernel && sys_size > DEF_SYSSIZE)
+ die("System is too big. Try using bzImage or modules.");
+- while (sz > 0) {
+- int l, n;
+
+- l = (sz > sizeof(buf)) ? sizeof(buf) : sz;
+- if ((n=read(fd, buf, l)) != l) {
+- if (n < 0)
+- die("Error reading %s: %m", argv[3]);
+- else
+- die("%s: Unexpected EOF", argv[3]);
+- }
+- if (write(1, buf, l) != l)
+- die("Write failed");
+- sz -= l;
+- }
++ /* Patch the setup code with the appropriate size parameters */
++ buf[0x1f1] = setup_sectors-1;
++ buf[0x1f4] = sys_size;
++ buf[0x1f5] = sys_size >> 8;
++ buf[0x1f6] = sys_size >> 16;
++ buf[0x1f7] = sys_size >> 24;
++
++ if (fwrite(buf, 1, i, stdout) != i)
++ die("Writing setup failed");
++
++ /* Copy the kernel code */
++ if (fwrite(kernel, 1, sz, stdout) != sz)
++ die("Writing kernel failed");
+ close(fd);
+
+- if (lseek(1, 497, SEEK_SET) != 497) /* Write sizes to the bootsector */
+- die("Output: seek failed");
+- buf[0] = setup_sectors;
+- if (write(1, buf, 1) != 1)
+- die("Write of setup sector count failed");
+- if (lseek(1, 500, SEEK_SET) != 500)
+- die("Output: seek failed");
+- buf[0] = (sys_size & 0xff);
+- buf[1] = ((sys_size >> 8) & 0xff);
+- buf[2] = ((sys_size >> 16) & 0xff);
+- buf[3] = ((sys_size >> 24) & 0xff);
+- if (write(1, buf, 4) != 4)
+- die("Write of image length failed");
+-
+- return 0; /* Everything is OK */
++ /* Everything is OK */
++ return 0;
+ }
+diff -puN /dev/null arch/i386/boot/tty.c
+--- /dev/null
++++ a/arch/i386/boot/tty.c
+@@ -0,0 +1,112 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/tty.c
++ *
++ * Very simple screen I/O
++ * XXX: Probably should add very simple serial I/O?
++ */
++
++#include "boot.h"
++
++/*
++ * These functions are in .inittext so they can be used to signal
++ * error during initialization.
++ */
++
++void __attribute__((section(".inittext"))) putchar(int ch)
++{
++ unsigned char c = ch;
++
++ if (c == '\n')
++ putchar('\r'); /* \n -> \r\n */
++
++ /* int $0x10 is known to have bugs involving touching registers
++ it shouldn't. Be extra conservative... */
++ asm volatile("pushal; int $0x10; popal"
++ : : "b" (0x0007), "c" (0x0001), "a" (0x0e00|ch));
++}
++
++void __attribute__((section(".inittext"))) puts(const char *str)
++{
++ int n = 0;
++ while (*str) {
++ putchar(*str++);
++ n++;
++ }
++}
++
++/*
++ * Read the CMOS clock through the BIOS, and return the
++ * seconds in BCD.
++ */
++
++static u8 gettime(void)
++{
++ u16 ax = 0x0200;
++ u16 cx, dx;
++
++ asm("int $0x1a"
++ : "+a" (ax), "=c" (cx), "=d" (dx)
++ : : "ebx", "esi", "edi");
++
++ return dx >> 8;
++}
++
++/*
++ * Read from the keyboard
++ */
++int getchar(void)
++{
++ u16 ax = 0;
++ asm("int $0x16" : "+a" (ax));
++
++ return ax & 0xff;
++}
++
++static int kbd_pending(void)
++{
++ u8 pending;
++ asm("int $0x16; setnz %0"
++ : "=rm" (pending)
++ : "a" (0x0100));
++ return pending;
++}
++
++void kbd_flush(void)
++{
++ for (;;) {
++ if (!kbd_pending())
++ break;
++ getchar();
++ }
++}
++
++int getchar_timeout(void)
++{
++ int cnt = 30;
++ int t0, t1;
++
++ t0 = gettime();
++
++ while (cnt) {
++ if (kbd_pending())
++ return getchar();
++
++ t1 = gettime();
++ if (t0 != t1) {
++ cnt--;
++ t0 = t1;
++ }
++ }
++
++ return 0; /* Timeout! */
++}
+diff -puN /dev/null arch/i386/boot/version.c
+--- /dev/null
++++ a/arch/i386/boot/version.c
+@@ -0,0 +1,23 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/version.c
++ *
++ * Kernel version string
++ */
++
++#include "boot.h"
++#include <linux/utsrelease.h>
++#include <linux/compile.h>
++
++const char kernel_version[] =
++ UTS_RELEASE " (" LINUX_COMPILE_BY "@" LINUX_COMPILE_HOST ") "
++ UTS_VERSION;
+diff -puN /dev/null arch/i386/boot/vesa.h
+--- /dev/null
++++ a/arch/i386/boot/vesa.h
+@@ -0,0 +1,79 @@
++/* ----------------------------------------------------------------------- *
++ *
++ * Copyright 1999-2007 H. Peter Anvin - All Rights Reserved
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation, Inc., 53 Temple Place Ste 330,
++ * Boston MA 02111-1307, USA; either version 2 of the License, or
++ * (at your option) any later version; incorporated herein by reference.
++ *
++ * ----------------------------------------------------------------------- */
++
++#ifndef BOOT_VESA_H
++#define BOOT_VESA_H
++
++typedef struct {
++ u16 off, seg;
++} far_ptr;
++
++/* VESA General Information table */
++struct vesa_general_info {
++ u32 signature; /* 0 Magic number = "VESA" */
++ u16 version; /* 4 */
++ far_ptr vendor_string; /* 6 */
++ u32 capabilities; /* 10 */
++ far_ptr video_mode_ptr; /* 14 */
++ u16 total_memory; /* 18 */
++
++ u16 oem_software_rev; /* 20 */
++ far_ptr oem_vendor_name_ptr; /* 22 */
++ far_ptr oem_product_name_ptr; /* 26 */
++ far_ptr oem_product_rev_ptr; /* 30 */
++
++ u8 reserved[222]; /* 34 */
++ u8 oem_data[256]; /* 256 */
++} __attribute__((packed));
++
++#define VESA_MAGIC ('V' + ('E' << 8) + ('S' << 16) + ('A' << 24))
++#define VBE2_MAGIC ('V' + ('B' << 8) + ('E' << 16) + ('2' << 24))
++
++struct vesa_mode_info {
++ u16 mode_attr; /* 0 */
++ u8 win_attr[2]; /* 2 */
++ u16 win_grain; /* 4 */
++ u16 win_size; /* 6 */
++ u16 win_seg[2]; /* 8 */
++ far_ptr win_scheme; /* 12 */
++ u16 logical_scan; /* 16 */
++
++ u16 h_res; /* 18 */
++ u16 v_res; /* 20 */
++ u8 char_width; /* 22 */
++ u8 char_height; /* 23 */
++ u8 memory_planes; /* 24 */
++ u8 bpp; /* 25 */
++ u8 banks; /* 26 */
++ u8 memory_layout; /* 27 */
++ u8 bank_size; /* 28 */
++ u8 image_planes; /* 29 */
++ u8 page_function; /* 30 */
++
++ u8 rmask; /* 31 */
++ u8 rpos; /* 32 */
++ u8 gmask; /* 33 */
++ u8 gpos; /* 34 */
++ u8 bmask; /* 35 */
++ u8 bpos; /* 36 */
++ u8 resv_mask; /* 37 */
++ u8 resv_pos; /* 38 */
++ u8 dcm_info; /* 39 */
++
++ u32 lfb_ptr; /* 40 Linear frame buffer address */
++ u32 offscreen_ptr; /* 44 Offscreen memory address */
++ u16 offscreen_size; /* 48 */
++
++ u8 reserved[206]; /* 50 */
++} __attribute__((packed));
++
++#endif /* LIB_SYS_VESA_H */
+diff -puN /dev/null arch/i386/boot/video-bios.c
+--- /dev/null
++++ a/arch/i386/boot/video-bios.c
+@@ -0,0 +1,125 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/video-bios.c
++ *
++ * Standard video BIOS modes
++ *
++ * We have two options for this; silent and scanned.
++ */
++
++#include "boot.h"
++#include "video.h"
++
++__videocard video_bios;
++
++/* Set a conventional BIOS mode */
++static int set_bios_mode(u8 mode);
++
++static int bios_set_mode(struct mode_info *mi)
++{
++ return set_bios_mode(mi->mode - VIDEO_FIRST_BIOS);
++}
++
++static int set_bios_mode(u8 mode)
++{
++ u16 ax;
++ u8 new_mode;
++
++ ax = mode; /* AH=0x00 Set Video Mode */
++ asm volatile(INT10
++ : "+a" (ax)
++ : : "ebx", "ecx", "edx", "esi", "edi");
++
++ ax = 0x0f00; /* Get Current Video Mode */
++ asm volatile(INT10
++ : "+a" (ax)
++ : : "ebx", "ecx", "edx", "esi", "edi");
++
++ do_restore = 1; /* Assume video contents was lost */
++ new_mode = ax & 0x7f; /* Not all BIOSes are clean with the top bit */
++
++ if (new_mode == mode)
++ return 0; /* Mode change OK */
++
++ if (new_mode != boot_params.screen_info.orig_video_mode) {
++ /* Mode setting failed, but we didn't end up where we
++ started. That's bad. Try to revert to the original
++ video mode. */
++ ax = boot_params.screen_info.orig_video_mode;
++ asm volatile(INT10
++ : "+a" (ax)
++ : : "ebx", "ecx", "edx", "esi", "edi");
++ }
++ return -1;
++}
++
++static int bios_probe(void)
++{
++ u8 mode;
++ u8 saved_mode = boot_params.screen_info.orig_video_mode;
++ u16 crtc;
++ struct mode_info *mi;
++ int nmodes = 0;
++
++ if (adapter != ADAPTER_EGA && adapter != ADAPTER_VGA)
++ return 0;
++
++ set_fs(0);
++ crtc = vga_crtc();
++
++ video_bios.modes = GET_HEAP(struct mode_info, 0);
++
++ for (mode = 0x14; mode <= 0x7f; mode++) {
++ if (heap_free() < sizeof(struct mode_info))
++ break;
++
++ if (mode_defined(VIDEO_FIRST_BIOS+mode))
++ continue;
++
++ if (set_bios_mode(mode))
++ continue;
++
++ /* Try to verify that it's a text mode. */
++
++ /* Attribute Controller: make graphics controller disabled */
++ if (in_idx(0x3c0, 0x10) & 0x01)
++ continue;
++
++ /* Graphics Controller: verify Alpha addressing enabled */
++ if (in_idx(0x3ce, 0x06) & 0x01)
++ continue;
++
++ /* CRTC cursor location low should be zero(?) */
++ if (in_idx(crtc, 0x0f))
++ continue;
++
++ mi = GET_HEAP(struct mode_info, 1);
++ mi->mode = VIDEO_FIRST_BIOS+mode;
++ mi->x = rdfs16(0x44a);
++ mi->y = rdfs8(0x484)+1;
++ nmodes++;
++ }
++
++ set_bios_mode(saved_mode);
++
++ return nmodes;
++}
++
++__videocard video_bios =
++{
++ .card_name = "BIOS (scanned)",
++ .probe = bios_probe,
++ .set_mode = bios_set_mode,
++ .unsafe = 1,
++ .xmode_first = VIDEO_FIRST_BIOS,
++ .xmode_n = 0x80,
++};
+diff -puN /dev/null arch/i386/boot/video-vesa.c
+--- /dev/null
++++ a/arch/i386/boot/video-vesa.c
+@@ -0,0 +1,283 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/video-vesa.c
++ *
++ * VESA text modes
++ */
++
++#include "boot.h"
++#include "video.h"
++#include "vesa.h"
++
++/* VESA information */
++static struct vesa_general_info vginfo;
++static struct vesa_mode_info vminfo;
++
++__videocard video_vesa;
++
++static void vesa_store_mode_params_graphics(void);
++
++static int vesa_probe(void)
++{
++#ifdef CONFIG_VIDEO_VESA
++ u16 ax;
++ u16 mode;
++ addr_t mode_ptr;
++ struct mode_info *mi;
++ int nmodes = 0;
++
++ video_vesa.modes = GET_HEAP(struct mode_info, 0);
++
++ vginfo.signature = VBE2_MAGIC;
++
++ /* Optimistically assume a VESA BIOS is register-clean... */
++ ax = 0x4f00;
++ asm("int $0x10" : "+a" (ax), "=m" (vginfo) : "D" (&vginfo));
++
++ if (ax != 0x004f ||
++ vginfo.signature != VESA_MAGIC ||
++ vginfo.version < 0x0102)
++ return 0; /* Not present */
++
++ set_fs(vginfo.video_mode_ptr.seg);
++ mode_ptr = vginfo.video_mode_ptr.off;
++
++ while ((mode = rdfs16(mode_ptr)) != 0xffff) {
++ mode_ptr += 2;
++
++ if (heap_free() < sizeof(struct mode_info))
++ break; /* Heap full, can't save mode info */
++
++ if (mode & ~0x1ff)
++ continue;
++
++ memset(&vminfo, 0, sizeof vminfo); /* Just in case... */
++
++ ax = 0x4f01;
++ asm("int $0x10"
++ : "+a" (ax), "=m" (vminfo)
++ : "c" (mode), "D" (&vminfo));
++
++ if (ax != 0x004f)
++ continue;
++
++ if ((vminfo.mode_attr & 0x15) == 0x05) {
++ /* Text Mode, TTY BIOS supported,
++ supported by hardware */
++ mi = GET_HEAP(struct mode_info, 1);
++ mi->mode = mode + VIDEO_FIRST_VESA;
++ mi->x = vminfo.h_res;
++ mi->y = vminfo.v_res;
++ nmodes++;
++ } else if ((vminfo.mode_attr & 0x99) == 0x99) {
++#ifdef CONFIG_FB
++ /* Graphics mode, color, linear frame buffer
++ supported -- register the mode but hide from
++ the menu. Only do this if framebuffer is
++ configured, however, otherwise the user will
++ be left without a screen. */
++ mi = GET_HEAP(struct mode_info, 1);
++ mi->mode = mode + VIDEO_FIRST_VESA;
++ mi->x = mi->y = 0;
++ nmodes++;
++#endif
++ }
++ }
++
++ return nmodes;
++#else
++ return 0;
++#endif
++}
++
++static int vesa_set_mode(struct mode_info *mode)
++{
++ u16 ax;
++ int is_graphic;
++ u16 vesa_mode = mode->mode - VIDEO_FIRST_VESA;
++
++ memset(&vminfo, 0, sizeof vminfo); /* Just in case... */
++
++ ax = 0x4f01;
++ asm("int $0x10"
++ : "+a" (ax), "=m" (vminfo)
++ : "c" (vesa_mode), "D" (&vminfo));
++
++ if (ax != 0x004f)
++ return -1;
++
++ if ((vminfo.mode_attr & 0x15) == 0x05) {
++ /* It's a supported text mode */
++ is_graphic = 0;
++ } else if ((vminfo.mode_attr & 0x99) == 0x99) {
++ /* It's a graphics mode with linear frame buffer */
++ is_graphic = 1;
++ vesa_mode |= 0x4000; /* Request linear frame buffer */
++ } else {
++ return -1; /* Invalid mode */
++ }
++
++
++ ax = 0x4f02;
++ asm volatile("int $0x10"
++ : "+a" (ax)
++ : "b" (vesa_mode), "D" (0));
++
++ if (ax != 0x004f)
++ return -1;
++
++ graphic_mode = is_graphic;
++ if (!is_graphic) {
++ /* Text mode */
++ force_x = mode->x;
++ force_y = mode->y;
++ do_restore = 1;
++ } else {
++ /* Graphics mode */
++ vesa_store_mode_params_graphics();
++ }
++
++ return 0;
++}
++
++
++/* Switch DAC to 8-bit mode */
++static void vesa_dac_set_8bits(void)
++{
++ u8 dac_size = 6;
++
++ /* If possible, switch the DAC to 8-bit mode */
++ if (vginfo.capabilities & 1) {
++ u16 ax, bx;
++
++ ax = 0x4f08;
++ bx = 0x0800;
++ asm volatile(INT10
++ : "+a" (ax), "+b" (bx)
++ : : "ecx", "edx", "esi", "edi");
++
++ if (ax == 0x004f)
++ dac_size = bx >> 8;
++ }
++
++ /* Set the color sizes to the DAC size, and offsets to 0 */
++ boot_params.screen_info.red_size = dac_size;
++ boot_params.screen_info.green_size = dac_size;
++ boot_params.screen_info.blue_size = dac_size;
++ boot_params.screen_info.rsvd_size = dac_size;
++
++ boot_params.screen_info.red_pos = 0;
++ boot_params.screen_info.green_pos = 0;
++ boot_params.screen_info.blue_pos = 0;
++ boot_params.screen_info.rsvd_pos = 0;
++}
++
++/* Save the VESA protected mode info */
++static void vesa_store_pm_info(void)
++{
++ u16 ax, bx, di, es;
++
++ ax = 0x4f0a;
++ bx = di = 0;
++ asm("pushw %%es; "INT10"; movw %%es,%0; popw %%es"
++ : "=d" (es), "+a" (ax), "+b" (bx), "+D" (di)
++ : : "ecx", "esi");
++
++ if (ax != 0x004f)
++ return;
++
++ boot_params.screen_info.vesapm_seg = es;
++ boot_params.screen_info.vesapm_off = di;
++}
++
++/*
++ * Save video mode parameters for graphics mode
++ */
++static void vesa_store_mode_params_graphics(void)
++{
++ /* Tell the kernel we're in VESA graphics mode */
++ boot_params.screen_info.orig_video_isVGA = 0x23;
++
++ /* Mode parameters */
++ boot_params.screen_info.vesa_attributes = vminfo.mode_attr;
++ boot_params.screen_info.lfb_linelength = vminfo.logical_scan;
++ boot_params.screen_info.lfb_width = vminfo.h_res;
++ boot_params.screen_info.lfb_height = vminfo.v_res;
++ boot_params.screen_info.lfb_depth = vminfo.bpp;
++ boot_params.screen_info.pages = vminfo.image_planes;
++ boot_params.screen_info.lfb_base = vminfo.lfb_ptr;
++ memcpy(&boot_params.screen_info.red_size,
++ &vminfo.rmask, 8);
++
++ /* General parameters */
++ boot_params.screen_info.lfb_size = vginfo.total_memory;
++
++ if (vminfo.bpp <= 8)
++ vesa_dac_set_8bits();
++
++ vesa_store_pm_info();
++}
++
++/*
++ * Save EDID information for the kernel; this is invoked, separately,
++ * after mode-setting.
++ */
++void vesa_store_edid(void)
++{
++#ifdef CONFIG_FIRMWARE_EDID
++ u16 ax, bx, cx, dx, di;
++
++ /* Apparently used as a nonsense token... */
++ memset(&boot_params.edid_info, 0x13, sizeof boot_params.edid_info);
++
++ if (vginfo.version < 0x0200)
++ return; /* EDID requires VBE 2.0+ */
++
++ ax = 0x4f15; /* VBE DDC */
++ bx = 0x0000; /* Report DDC capabilities */
++ cx = 0; /* Controller 0 */
++ di = 0; /* ES:DI must be 0 by spec */
++
++ /* Note: The VBE DDC spec is different from the main VESA spec;
++ we genuinely have to assume all registers are destroyed here. */
++
++ asm("pushw %%es; movw %2,%%es; "INT10"; popw %%es"
++ : "+a" (ax), "+b" (bx)
++ : "c" (cx), "D" (di)
++ : "esi");
++
++ if (ax != 0x004f)
++ return; /* No EDID */
++
++ /* BH = time in seconds to transfer EDD information */
++ /* BL = DDC level supported */
++
++ ax = 0x4f15; /* VBE DDC */
++ bx = 0x0001; /* Read EDID */
++ cx = 0; /* Controller 0 */
++ dx = 0; /* EDID block number */
++ di =(size_t) &boot_params.edid_info; /* (ES:)Pointer to block */
++ asm(INT10
++ : "+a" (ax), "+b" (bx), "+d" (dx)
++ : "c" (cx), "D" (di)
++ : "esi");
++#endif /* CONFIG_FIRMWARE_EDID */
++}
++
++__videocard video_vesa =
++{
++ .card_name = "VESA",
++ .probe = vesa_probe,
++ .set_mode = vesa_set_mode,
++ .xmode_first = VIDEO_FIRST_VESA,
++ .xmode_n = 0x200,
++};
+diff -puN /dev/null arch/i386/boot/video-vga.c
+--- /dev/null
++++ a/arch/i386/boot/video-vga.c
+@@ -0,0 +1,260 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/video-vga.c
++ *
++ * Common all-VGA modes
++ */
++
++#include "boot.h"
++#include "video.h"
++
++static struct mode_info vga_modes[] = {
++ { VIDEO_80x25, 80, 25 },
++ { VIDEO_8POINT, 80, 50 },
++ { VIDEO_80x43, 80, 43 },
++ { VIDEO_80x28, 80, 28 },
++ { VIDEO_80x30, 80, 30 },
++ { VIDEO_80x34, 80, 34 },
++ { VIDEO_80x60, 80, 60 },
++};
++
++static struct mode_info ega_modes[] = {
++ { VIDEO_80x25, 80, 25 },
++ { VIDEO_8POINT, 80, 43 },
++};
++
++static struct mode_info cga_modes[] = {
++ { VIDEO_80x25, 80, 25 },
++};
++
++__videocard video_vga;
++
++/* Set basic 80x25 mode */
++static u8 vga_set_basic_mode(void)
++{
++ u16 ax;
++ u8 rows;
++ u8 mode;
++
++#ifdef CONFIG_VIDEO_400_HACK
++ if (adapter >= ADAPTER_VGA) {
++ asm(INT10
++ : : "a" (0x1202), "b" (0x0030)
++ : "ecx", "edx", "esi", "edi");
++ }
++#endif
++
++ ax = 0x0f00;
++ asm(INT10
++ : "+a" (ax)
++ : : "ebx", "ecx", "edx", "esi", "edi");
++
++ mode = (u8)ax;
++
++ set_fs(0);
++ rows = rdfs8(0x484); /* rows minus one */
++
++#ifndef CONFIG_VIDEO_400_HACK
++ if ((ax == 0x5003 || ax == 0x5007) &&
++ (rows == 0 || rows == 24))
++ return mode;
++#endif
++
++ if (mode != 3 && mode != 7)
++ mode = 3;
++
++ /* Set the mode */
++ asm volatile(INT10
++ : : "a" (mode)
++ : "ebx", "ecx", "edx", "esi", "edi");
++ do_restore = 1;
++ return mode;
++}
++
++static void vga_set_8font(void)
++{
++ /* Set 8x8 font - 80x43 on EGA, 80x50 on VGA */
++
++ /* Set 8x8 font */
++ asm volatile(INT10 : : "a" (0x1112), "b" (0));
++
++ /* Use alternate print screen */
++ asm volatile(INT10 : : "a" (0x1200), "b" (0x20));
++
++ /* Turn off cursor emulation */
++ asm volatile(INT10 : : "a" (0x1201), "b" (0x34));
++
++ /* Cursor is scan lines 6-7 */
++ asm volatile(INT10 : : "a" (0x0100), "c" (0x0607));
++}
++
++static void vga_set_14font(void)
++{
++ /* Set 9x14 font - 80x28 on VGA */
++
++ /* Set 9x14 font */
++ asm volatile(INT10 : : "a" (0x1111), "b" (0));
++
++ /* Turn off cursor emulation */
++ asm volatile(INT10 : : "a" (0x1201), "b" (0x34));
++
++ /* Cursor is scan lines 11-12 */
++ asm volatile(INT10 : : "a" (0x0100), "c" (0x0b0c));
++}
++
++static void vga_set_80x43(void)
++{
++ /* Set 80x43 mode on VGA (not EGA) */
++
++ /* Set 350 scans */
++ asm volatile(INT10 : : "a" (0x1201), "b" (0x30));
++
++ /* Reset video mode */
++ asm volatile(INT10 : : "a" (0x0003));
++
++ vga_set_8font();
++}
++
++/* I/O address of the VGA CRTC */
++u16 vga_crtc(void)
++{
++ return (inb(0x3cc) & 1) ? 0x3d4 : 0x3b4;
++}
++
++static void vga_set_480_scanlines(int end)
++{
++ u16 crtc;
++ u8 csel;
++
++ crtc = vga_crtc();
++
++ out_idx(0x0c, crtc, 0x11); /* Vertical sync end, unlock CR0-7 */
++ out_idx(0x0b, crtc, 0x06); /* Vertical total */
++ out_idx(0x3e, crtc, 0x07); /* Vertical overflow */
++ out_idx(0xea, crtc, 0x10); /* Vertical sync start */
++ out_idx(end, crtc, 0x12); /* Vertical display end */
++ out_idx(0xe7, crtc, 0x15); /* Vertical blank start */
++ out_idx(0x04, crtc, 0x16); /* Vertical blank end */
++ csel = inb(0x3cc);
++ csel &= 0x0d;
++ csel |= 0xe2;
++ outb(csel, 0x3cc);
++}
++
++static void vga_set_80x30(void)
++{
++ vga_set_480_scanlines(0xdf);
++}
++
++static void vga_set_80x34(void)
++{
++ vga_set_14font();
++ vga_set_480_scanlines(0xdb);
++}
++
++static void vga_set_80x60(void)
++{
++ vga_set_8font();
++ vga_set_480_scanlines(0xdf);
++}
++
++static int vga_set_mode(struct mode_info *mode)
++{
++ /* Set the basic mode */
++ vga_set_basic_mode();
++
++ /* Override a possibly broken BIOS */
++ force_x = mode->x;
++ force_y = mode->y;
++
++ switch (mode->mode) {
++ case VIDEO_80x25:
++ break;
++ case VIDEO_8POINT:
++ vga_set_8font();
++ break;
++ case VIDEO_80x43:
++ vga_set_80x43();
++ break;
++ case VIDEO_80x28:
++ vga_set_14font();
++ break;
++ case VIDEO_80x30:
++ vga_set_80x30();
++ break;
++ case VIDEO_80x34:
++ vga_set_80x34();
++ break;
++ case VIDEO_80x60:
++ vga_set_80x60();
++ break;
++ }
++
++ return 0;
++}
++
++/*
++ * Note: this probe includes basic information required by all
++ * systems. It should be executed first, by making sure
++ * video-vga.c is listed first in the Makefile.
++ */
++static int vga_probe(void)
++{
++ static const char *card_name[] = {
++ "CGA/MDA/HGC", "EGA", "VGA"
++ };
++ static struct mode_info *mode_lists[] = {
++ cga_modes,
++ ega_modes,
++ vga_modes,
++ };
++ static int mode_count[] = {
++ sizeof(cga_modes)/sizeof(struct mode_info),
++ sizeof(ega_modes)/sizeof(struct mode_info),
++ sizeof(vga_modes)/sizeof(struct mode_info),
++ };
++ u8 vga_flag;
++
++ asm(INT10
++ : "=b" (boot_params.screen_info.orig_video_ega_bx)
++ : "a" (0x1200), "b" (0x10) /* Check EGA/VGA */
++ : "ecx", "edx", "esi", "edi");
++
++ /* If we have MDA/CGA/HGC then BL will be unchanged at 0x10 */
++ if ((u8)boot_params.screen_info.orig_video_ega_bx != 0x10) {
++ /* EGA/VGA */
++ asm(INT10
++ : "=a" (vga_flag)
++ : "a" (0x1a00)
++ : "ebx", "ecx", "edx", "esi", "edi");
++
++ if (vga_flag == 0x1a) {
++ adapter = ADAPTER_VGA;
++ boot_params.screen_info.orig_video_isVGA = 1;
++ } else {
++ adapter = ADAPTER_EGA;
++ }
++ } else {
++ adapter = ADAPTER_CGA;
++ }
++
++ video_vga.modes = mode_lists[adapter];
++ video_vga.card_name = card_name[adapter];
++ return mode_count[adapter];
++}
++
++__videocard video_vga =
++{
++ .card_name = "VGA",
++ .probe = vga_probe,
++ .set_mode = vga_set_mode,
++};
+diff -puN arch/i386/boot/video.S~git-newsetup /dev/null
+--- a/arch/i386/boot/video.S
++++ /dev/null
+@@ -1,2043 +0,0 @@
+-/* video.S
+- *
+- * Display adapter & video mode setup, version 2.13 (14-May-99)
+- *
+- * Copyright (C) 1995 -- 1998 Martin Mares <mj@ucw.cz>
+- * Based on the original setup.S code (C) Linus Torvalds and Mats Anderson
+- *
+- * Rewritten to use GNU 'as' by Chris Noe <stiker@northlink.com> May 1999
+- *
+- * For further information, look at Documentation/svga.txt.
+- *
+- */
+-
+-/* Enable autodetection of SVGA adapters and modes. */
+-#undef CONFIG_VIDEO_SVGA
+-
+-/* Enable autodetection of VESA modes */
+-#define CONFIG_VIDEO_VESA
+-
+-/* Enable compacting of mode table */
+-#define CONFIG_VIDEO_COMPACT
+-
+-/* Retain screen contents when switching modes */
+-#define CONFIG_VIDEO_RETAIN
+-
+-/* Enable local mode list */
+-#undef CONFIG_VIDEO_LOCAL
+-
+-/* Force 400 scan lines for standard modes (hack to fix bad BIOS behaviour */
+-#undef CONFIG_VIDEO_400_HACK
+-
+-/* Hack that lets you force specific BIOS mode ID and specific dimensions */
+-#undef CONFIG_VIDEO_GFX_HACK
+-#define VIDEO_GFX_BIOS_AX 0x4f02 /* 800x600 on ThinkPad */
+-#define VIDEO_GFX_BIOS_BX 0x0102
+-#define VIDEO_GFX_DUMMY_RESOLUTION 0x6425 /* 100x37 */
+-
+-/* This code uses an extended set of video mode numbers. These include:
+- * Aliases for standard modes
+- * NORMAL_VGA (-1)
+- * EXTENDED_VGA (-2)
+- * ASK_VGA (-3)
+- * Video modes numbered by menu position -- NOT RECOMMENDED because of lack
+- * of compatibility when extending the table. These are between 0x00 and 0xff.
+- */
+-#define VIDEO_FIRST_MENU 0x0000
+-
+-/* Standard BIOS video modes (BIOS number + 0x0100) */
+-#define VIDEO_FIRST_BIOS 0x0100
+-
+-/* VESA BIOS video modes (VESA number + 0x0200) */
+-#define VIDEO_FIRST_VESA 0x0200
+-
+-/* Video7 special modes (BIOS number + 0x0900) */
+-#define VIDEO_FIRST_V7 0x0900
+-
+-/* Special video modes */
+-#define VIDEO_FIRST_SPECIAL 0x0f00
+-#define VIDEO_80x25 0x0f00
+-#define VIDEO_8POINT 0x0f01
+-#define VIDEO_80x43 0x0f02
+-#define VIDEO_80x28 0x0f03
+-#define VIDEO_CURRENT_MODE 0x0f04
+-#define VIDEO_80x30 0x0f05
+-#define VIDEO_80x34 0x0f06
+-#define VIDEO_80x60 0x0f07
+-#define VIDEO_GFX_HACK 0x0f08
+-#define VIDEO_LAST_SPECIAL 0x0f09
+-
+-/* Video modes given by resolution */
+-#define VIDEO_FIRST_RESOLUTION 0x1000
+-
+-/* The "recalculate timings" flag */
+-#define VIDEO_RECALC 0x8000
+-
+-/* Positions of various video parameters passed to the kernel */
+-/* (see also include/linux/tty.h) */
+-#define PARAM_CURSOR_POS 0x00
+-#define PARAM_VIDEO_PAGE 0x04
+-#define PARAM_VIDEO_MODE 0x06
+-#define PARAM_VIDEO_COLS 0x07
+-#define PARAM_VIDEO_EGA_BX 0x0a
+-#define PARAM_VIDEO_LINES 0x0e
+-#define PARAM_HAVE_VGA 0x0f
+-#define PARAM_FONT_POINTS 0x10
+-
+-#define PARAM_LFB_WIDTH 0x12
+-#define PARAM_LFB_HEIGHT 0x14
+-#define PARAM_LFB_DEPTH 0x16
+-#define PARAM_LFB_BASE 0x18
+-#define PARAM_LFB_SIZE 0x1c
+-#define PARAM_LFB_LINELENGTH 0x24
+-#define PARAM_LFB_COLORS 0x26
+-#define PARAM_VESAPM_SEG 0x2e
+-#define PARAM_VESAPM_OFF 0x30
+-#define PARAM_LFB_PAGES 0x32
+-#define PARAM_VESA_ATTRIB 0x34
+-#define PARAM_CAPABILITIES 0x36
+-
+-/* Define DO_STORE according to CONFIG_VIDEO_RETAIN */
+-#ifdef CONFIG_VIDEO_RETAIN
+-#define DO_STORE call store_screen
+-#else
+-#define DO_STORE
+-#endif /* CONFIG_VIDEO_RETAIN */
+-
+-# This is the main entry point called by setup.S
+-# %ds *must* be pointing to the bootsector
+-video: pushw %ds # We use different segments
+- pushw %ds # FS contains original DS
+- popw %fs
+- pushw %cs # DS is equal to CS
+- popw %ds
+- pushw %cs # ES is equal to CS
+- popw %es
+- xorw %ax, %ax
+- movw %ax, %gs # GS is zero
+- cld
+- call basic_detect # Basic adapter type testing (EGA/VGA/MDA/CGA)
+-#ifdef CONFIG_VIDEO_SELECT
+- movw %fs:(0x01fa), %ax # User selected video mode
+- cmpw $ASK_VGA, %ax # Bring up the menu
+- jz vid2
+-
+- call mode_set # Set the mode
+- jc vid1
+-
+- leaw badmdt, %si # Invalid mode ID
+- call prtstr
+-vid2: call mode_menu
+-vid1:
+-#ifdef CONFIG_VIDEO_RETAIN
+- call restore_screen # Restore screen contents
+-#endif /* CONFIG_VIDEO_RETAIN */
+- call store_edid
+-#endif /* CONFIG_VIDEO_SELECT */
+- call mode_params # Store mode parameters
+- popw %ds # Restore original DS
+- ret
+-
+-# Detect if we have CGA, MDA, EGA or VGA and pass it to the kernel.
+-basic_detect:
+- movb $0, %fs:(PARAM_HAVE_VGA)
+- movb $0x12, %ah # Check EGA/VGA
+- movb $0x10, %bl
+- int $0x10
+- movw %bx, %fs:(PARAM_VIDEO_EGA_BX) # Identifies EGA to the kernel
+- cmpb $0x10, %bl # No, it's a CGA/MDA/HGA card.
+- je basret
+-
+- incb adapter
+- movw $0x1a00, %ax # Check EGA or VGA?
+- int $0x10
+- cmpb $0x1a, %al # 1a means VGA...
+- jne basret # anything else is EGA.
+-
+- incb %fs:(PARAM_HAVE_VGA) # We've detected a VGA
+- incb adapter
+-basret: ret
+-
+-# Store the video mode parameters for later usage by the kernel.
+-# This is done by asking the BIOS except for the rows/columns
+-# parameters in the default 80x25 mode -- these are set directly,
+-# because some very obscure BIOSes supply insane values.
+-mode_params:
+-#ifdef CONFIG_VIDEO_SELECT
+- cmpb $0, graphic_mode
+- jnz mopar_gr
+-#endif
+- movb $0x03, %ah # Read cursor position
+- xorb %bh, %bh
+- int $0x10
+- movw %dx, %fs:(PARAM_CURSOR_POS)
+- movb $0x0f, %ah # Read page/mode/width
+- int $0x10
+- movw %bx, %fs:(PARAM_VIDEO_PAGE)
+- movw %ax, %fs:(PARAM_VIDEO_MODE) # Video mode and screen width
+- cmpb $0x7, %al # MDA/HGA => segment differs
+- jnz mopar0
+-
+- movw $0xb000, video_segment
+-mopar0: movw %gs:(0x485), %ax # Font size
+- movw %ax, %fs:(PARAM_FONT_POINTS) # (valid only on EGA/VGA)
+- movw force_size, %ax # Forced size?
+- orw %ax, %ax
+- jz mopar1
+-
+- movb %ah, %fs:(PARAM_VIDEO_COLS)
+- movb %al, %fs:(PARAM_VIDEO_LINES)
+- ret
+-
+-mopar1: movb $25, %al
+- cmpb $0, adapter # If we are on CGA/MDA/HGA, the
+- jz mopar2 # screen must have 25 lines.
+-
+- movb %gs:(0x484), %al # On EGA/VGA, use the EGA+ BIOS
+- incb %al # location of max lines.
+-mopar2: movb %al, %fs:(PARAM_VIDEO_LINES)
+- ret
+-
+-#ifdef CONFIG_VIDEO_SELECT
+-# Fetching of VESA frame buffer parameters
+-mopar_gr:
+- leaw modelist+1024, %di
+- movb $0x23, %fs:(PARAM_HAVE_VGA)
+- movw 16(%di), %ax
+- movw %ax, %fs:(PARAM_LFB_LINELENGTH)
+- movw 18(%di), %ax
+- movw %ax, %fs:(PARAM_LFB_WIDTH)
+- movw 20(%di), %ax
+- movw %ax, %fs:(PARAM_LFB_HEIGHT)
+- movb 25(%di), %al
+- movb $0, %ah
+- movw %ax, %fs:(PARAM_LFB_DEPTH)
+- movb 29(%di), %al
+- movb $0, %ah
+- movw %ax, %fs:(PARAM_LFB_PAGES)
+- movl 40(%di), %eax
+- movl %eax, %fs:(PARAM_LFB_BASE)
+- movl 31(%di), %eax
+- movl %eax, %fs:(PARAM_LFB_COLORS)
+- movl 35(%di), %eax
+- movl %eax, %fs:(PARAM_LFB_COLORS+4)
+- movw 0(%di), %ax
+- movw %ax, %fs:(PARAM_VESA_ATTRIB)
+-
+-# get video mem size
+- leaw modelist+1024, %di
+- movw $0x4f00, %ax
+- int $0x10
+- xorl %eax, %eax
+- movw 18(%di), %ax
+- movl %eax, %fs:(PARAM_LFB_SIZE)
+-
+-# store mode capabilities
+- movl 10(%di), %eax
+- movl %eax, %fs:(PARAM_CAPABILITIES)
+-
+-# switching the DAC to 8-bit is for <= 8 bpp only
+- movw %fs:(PARAM_LFB_DEPTH), %ax
+- cmpw $8, %ax
+- jg dac_done
+-
+-# get DAC switching capability
+- xorl %eax, %eax
+- movb 10(%di), %al
+- testb $1, %al
+- jz dac_set
+-
+-# attempt to switch DAC to 8-bit
+- movw $0x4f08, %ax
+- movw $0x0800, %bx
+- int $0x10
+- cmpw $0x004f, %ax
+- jne dac_set
+- movb %bh, dac_size # store actual DAC size
+-
+-dac_set:
+-# set color size to DAC size
+- movb dac_size, %al
+- movb %al, %fs:(PARAM_LFB_COLORS+0)
+- movb %al, %fs:(PARAM_LFB_COLORS+2)
+- movb %al, %fs:(PARAM_LFB_COLORS+4)
+- movb %al, %fs:(PARAM_LFB_COLORS+6)
+-
+-# set color offsets to 0
+- movb $0, %fs:(PARAM_LFB_COLORS+1)
+- movb $0, %fs:(PARAM_LFB_COLORS+3)
+- movb $0, %fs:(PARAM_LFB_COLORS+5)
+- movb $0, %fs:(PARAM_LFB_COLORS+7)
+-
+-dac_done:
+-# get protected mode interface informations
+- movw $0x4f0a, %ax
+- xorw %bx, %bx
+- xorw %di, %di
+- int $0x10
+- cmp $0x004f, %ax
+- jnz no_pm
+-
+- movw %es, %fs:(PARAM_VESAPM_SEG)
+- movw %di, %fs:(PARAM_VESAPM_OFF)
+-no_pm: ret
+-
+-# The video mode menu
+-mode_menu:
+- leaw keymsg, %si # "Return/Space/Timeout" message
+- call prtstr
+- call flush
+-nokey: call getkt
+-
+- cmpb $0x0d, %al # ENTER ?
+- je listm # yes - manual mode selection
+-
+- cmpb $0x20, %al # SPACE ?
+- je defmd1 # no - repeat
+-
+- call beep
+- jmp nokey
+-
+-defmd1: ret # No mode chosen? Default 80x25
+-
+-listm: call mode_table # List mode table
+-listm0: leaw name_bann, %si # Print adapter name
+- call prtstr
+- movw card_name, %si
+- orw %si, %si
+- jnz an2
+-
+- movb adapter, %al
+- leaw old_name, %si
+- orb %al, %al
+- jz an1
+-
+- leaw ega_name, %si
+- decb %al
+- jz an1
+-
+- leaw vga_name, %si
+- jmp an1
+-
+-an2: call prtstr
+- leaw svga_name, %si
+-an1: call prtstr
+- leaw listhdr, %si # Table header
+- call prtstr
+- movb $0x30, %dl # DL holds mode number
+- leaw modelist, %si
+-lm1: cmpw $ASK_VGA, (%si) # End?
+- jz lm2
+-
+- movb %dl, %al # Menu selection number
+- call prtchr
+- call prtsp2
+- lodsw
+- call prthw # Mode ID
+- call prtsp2
+- movb 0x1(%si), %al
+- call prtdec # Rows
+- movb $0x78, %al # the letter 'x'
+- call prtchr
+- lodsw
+- call prtdec # Columns
+- movb $0x0d, %al # New line
+- call prtchr
+- movb $0x0a, %al
+- call prtchr
+- incb %dl # Next character
+- cmpb $0x3a, %dl
+- jnz lm1
+-
+- movb $0x61, %dl
+- jmp lm1
+-
+-lm2: leaw prompt, %si # Mode prompt
+- call prtstr
+- leaw edit_buf, %di # Editor buffer
+-lm3: call getkey
+- cmpb $0x0d, %al # Enter?
+- jz lment
+-
+- cmpb $0x08, %al # Backspace?
+- jz lmbs
+-
+- cmpb $0x20, %al # Printable?
+- jc lm3
+-
+- cmpw $edit_buf+4, %di # Enough space?
+- jz lm3
+-
+- stosb
+- call prtchr
+- jmp lm3
+-
+-lmbs: cmpw $edit_buf, %di # Backspace
+- jz lm3
+-
+- decw %di
+- movb $0x08, %al
+- call prtchr
+- call prtspc
+- movb $0x08, %al
+- call prtchr
+- jmp lm3
+-
+-lment: movb $0, (%di)
+- leaw crlft, %si
+- call prtstr
+- leaw edit_buf, %si
+- cmpb $0, (%si) # Empty string = default mode
+- jz lmdef
+-
+- cmpb $0, 1(%si) # One character = menu selection
+- jz mnusel
+-
+- cmpw $0x6373, (%si) # "scan" => mode scanning
+- jnz lmhx
+-
+- cmpw $0x6e61, 2(%si)
+- jz lmscan
+-
+-lmhx: xorw %bx, %bx # Else => mode ID in hex
+-lmhex: lodsb
+- orb %al, %al
+- jz lmuse1
+-
+- subb $0x30, %al
+- jc lmbad
+-
+- cmpb $10, %al
+- jc lmhx1
+-
+- subb $7, %al
+- andb $0xdf, %al
+- cmpb $10, %al
+- jc lmbad
+-
+- cmpb $16, %al
+- jnc lmbad
+-
+-lmhx1: shlw $4, %bx
+- orb %al, %bl
+- jmp lmhex
+-
+-lmuse1: movw %bx, %ax
+- jmp lmuse
+-
+-mnusel: lodsb # Menu selection
+- xorb %ah, %ah
+- subb $0x30, %al
+- jc lmbad
+-
+- cmpb $10, %al
+- jc lmuse
+-
+- cmpb $0x61-0x30, %al
+- jc lmbad
+-
+- subb $0x61-0x30-10, %al
+- cmpb $36, %al
+- jnc lmbad
+-
+-lmuse: call mode_set
+- jc lmdef
+-
+-lmbad: leaw unknt, %si
+- call prtstr
+- jmp lm2
+-lmscan: cmpb $0, adapter # Scanning only on EGA/VGA
+- jz lmbad
+-
+- movw $0, mt_end # Scanning of modes is
+- movb $1, scanning # done as new autodetection.
+- call mode_table
+- jmp listm0
+-lmdef: ret
+-
+-# Additional parts of mode_set... (relative jumps, you know)
+-setv7: # Video7 extended modes
+- DO_STORE
+- subb $VIDEO_FIRST_V7>>8, %bh
+- movw $0x6f05, %ax
+- int $0x10
+- stc
+- ret
+-
+-_setrec: jmp setrec # Ugly...
+-_set_80x25: jmp set_80x25
+-
+-# Aliases for backward compatibility.
+-setalias:
+- movw $VIDEO_80x25, %ax
+- incw %bx
+- jz mode_set
+-
+- movb $VIDEO_8POINT-VIDEO_FIRST_SPECIAL, %al
+- incw %bx
+- jnz setbad # Fall-through!
+-
+-# Setting of user mode (AX=mode ID) => CF=success
+-mode_set:
+- movw %ax, %fs:(0x01fa) # Store mode for use in acpi_wakeup.S
+- movw %ax, %bx
+- cmpb $0xff, %ah
+- jz setalias
+-
+- testb $VIDEO_RECALC>>8, %ah
+- jnz _setrec
+-
+- cmpb $VIDEO_FIRST_RESOLUTION>>8, %ah
+- jnc setres
+-
+- cmpb $VIDEO_FIRST_SPECIAL>>8, %ah
+- jz setspc
+-
+- cmpb $VIDEO_FIRST_V7>>8, %ah
+- jz setv7
+-
+- cmpb $VIDEO_FIRST_VESA>>8, %ah
+- jnc check_vesa
+-
+- orb %ah, %ah
+- jz setmenu
+-
+- decb %ah
+- jz setbios
+-
+-setbad: clc
+- movb $0, do_restore # The screen needn't be restored
+- ret
+-
+-setvesa:
+- DO_STORE
+- subb $VIDEO_FIRST_VESA>>8, %bh
+- movw $0x4f02, %ax # VESA BIOS mode set call
+- int $0x10
+- cmpw $0x004f, %ax # AL=4f if implemented
+- jnz setbad # AH=0 if OK
+-
+- stc
+- ret
+-
+-setbios:
+- DO_STORE
+- int $0x10 # Standard BIOS mode set call
+- pushw %bx
+- movb $0x0f, %ah # Check if really set
+- int $0x10
+- popw %bx
+- cmpb %bl, %al
+- jnz setbad
+-
+- stc
+- ret
+-
+-setspc: xorb %bh, %bh # Set special mode
+- cmpb $VIDEO_LAST_SPECIAL-VIDEO_FIRST_SPECIAL, %bl
+- jnc setbad
+-
+- addw %bx, %bx
+- jmp *spec_inits(%bx)
+-
+-setmenu:
+- orb %al, %al # 80x25 is an exception
+- jz _set_80x25
+-
+- pushw %bx # Set mode chosen from menu
+- call mode_table # Build the mode table
+- popw %ax
+- shlw $2, %ax
+- addw %ax, %si
+- cmpw %di, %si
+- jnc setbad
+-
+- movw (%si), %ax # Fetch mode ID
+-_m_s: jmp mode_set
+-
+-setres: pushw %bx # Set mode chosen by resolution
+- call mode_table
+- popw %bx
+- xchgb %bl, %bh
+-setr1: lodsw
+- cmpw $ASK_VGA, %ax # End of the list?
+- jz setbad
+-
+- lodsw
+- cmpw %bx, %ax
+- jnz setr1
+-
+- movw -4(%si), %ax # Fetch mode ID
+- jmp _m_s
+-
+-check_vesa:
+-#ifdef CONFIG_FIRMWARE_EDID
+- leaw modelist+1024, %di
+- movw $0x4f00, %ax
+- int $0x10
+- cmpw $0x004f, %ax
+- jnz setbad
+-
+- movw 4(%di), %ax
+- movw %ax, vbe_version
+-#endif
+- leaw modelist+1024, %di
+- subb $VIDEO_FIRST_VESA>>8, %bh
+- movw %bx, %cx # Get mode information structure
+- movw $0x4f01, %ax
+- int $0x10
+- addb $VIDEO_FIRST_VESA>>8, %bh
+- cmpw $0x004f, %ax
+- jnz setbad
+-
+- movb (%di), %al # Check capabilities.
+- andb $0x19, %al
+- cmpb $0x09, %al
+- jz setvesa # This is a text mode
+-
+- movb (%di), %al # Check capabilities.
+- andb $0x99, %al
+- cmpb $0x99, %al
+- jnz _setbad # Doh! No linear frame buffer.
+-
+- subb $VIDEO_FIRST_VESA>>8, %bh
+- orw $0x4000, %bx # Use linear frame buffer
+- movw $0x4f02, %ax # VESA BIOS mode set call
+- int $0x10
+- cmpw $0x004f, %ax # AL=4f if implemented
+- jnz _setbad # AH=0 if OK
+-
+- movb $1, graphic_mode # flag graphic mode
+- movb $0, do_restore # no screen restore
+- stc
+- ret
+-
+-_setbad: jmp setbad # Ugly...
+-
+-# Recalculate vertical display end registers -- this fixes various
+-# inconsistencies of extended modes on many adapters. Called when
+-# the VIDEO_RECALC flag is set in the mode ID.
+-
+-setrec: subb $VIDEO_RECALC>>8, %ah # Set the base mode
+- call mode_set
+- jnc rct3
+-
+- movw %gs:(0x485), %ax # Font size in pixels
+- movb %gs:(0x484), %bl # Number of rows
+- incb %bl
+- mulb %bl # Number of visible
+- decw %ax # scan lines - 1
+- movw $0x3d4, %dx
+- movw %ax, %bx
+- movb $0x12, %al # Lower 8 bits
+- movb %bl, %ah
+- outw %ax, %dx
+- movb $0x07, %al # Bits 8 and 9 in the overflow register
+- call inidx
+- xchgb %al, %ah
+- andb $0xbd, %ah
+- shrb %bh
+- jnc rct1
+- orb $0x02, %ah
+-rct1: shrb %bh
+- jnc rct2
+- orb $0x40, %ah
+-rct2: movb $0x07, %al
+- outw %ax, %dx
+- stc
+-rct3: ret
+-
+-# Table of routines for setting of the special modes.
+-spec_inits:
+- .word set_80x25
+- .word set_8pixel
+- .word set_80x43
+- .word set_80x28
+- .word set_current
+- .word set_80x30
+- .word set_80x34
+- .word set_80x60
+- .word set_gfx
+-
+-# Set the 80x25 mode. If already set, do nothing.
+-set_80x25:
+- movw $0x5019, force_size # Override possibly broken BIOS
+-use_80x25:
+-#ifdef CONFIG_VIDEO_400_HACK
+- movw $0x1202, %ax # Force 400 scan lines
+- movb $0x30, %bl
+- int $0x10
+-#else
+- movb $0x0f, %ah # Get current mode ID
+- int $0x10
+- cmpw $0x5007, %ax # Mode 7 (80x25 mono) is the only one available
+- jz st80 # on CGA/MDA/HGA and is also available on EGAM
+-
+- cmpw $0x5003, %ax # Unknown mode, force 80x25 color
+- jnz force3
+-
+-st80: cmpb $0, adapter # CGA/MDA/HGA => mode 3/7 is always 80x25
+- jz set80
+-
+- movb %gs:(0x0484), %al # This is EGA+ -- beware of 80x50 etc.
+- orb %al, %al # Some buggy BIOS'es set 0 rows
+- jz set80
+-
+- cmpb $24, %al # It's hopefully correct
+- jz set80
+-#endif /* CONFIG_VIDEO_400_HACK */
+-force3: DO_STORE
+- movw $0x0003, %ax # Forced set
+- int $0x10
+-set80: stc
+- ret
+-
+-# Set the 80x50/80x43 8-pixel mode. Simple BIOS calls.
+-set_8pixel:
+- DO_STORE
+- call use_80x25 # The base is 80x25
+-set_8pt:
+- movw $0x1112, %ax # Use 8x8 font
+- xorb %bl, %bl
+- int $0x10
+- movw $0x1200, %ax # Use alternate print screen
+- movb $0x20, %bl
+- int $0x10
+- movw $0x1201, %ax # Turn off cursor emulation
+- movb $0x34, %bl
+- int $0x10
+- movb $0x01, %ah # Define cursor scan lines 6-7
+- movw $0x0607, %cx
+- int $0x10
+-set_current:
+- stc
+- ret
+-
+-# Set the 80x28 mode. This mode works on all VGA's, because it's a standard
+-# 80x25 mode with 14-point fonts instead of 16-point.
+-set_80x28:
+- DO_STORE
+- call use_80x25 # The base is 80x25
+-set14: movw $0x1111, %ax # Use 9x14 font
+- xorb %bl, %bl
+- int $0x10
+- movb $0x01, %ah # Define cursor scan lines 11-12
+- movw $0x0b0c, %cx
+- int $0x10
+- stc
+- ret
+-
+-# Set the 80x43 mode. This mode is works on all VGA's.
+-# It's a 350-scanline mode with 8-pixel font.
+-set_80x43:
+- DO_STORE
+- movw $0x1201, %ax # Set 350 scans
+- movb $0x30, %bl
+- int $0x10
+- movw $0x0003, %ax # Reset video mode
+- int $0x10
+- jmp set_8pt # Use 8-pixel font
+-
+-# Set the 80x30 mode (all VGA's). 480 scanlines, 16-pixel font.
+-set_80x30:
+- call use_80x25 # Start with real 80x25
+- DO_STORE
+- movw $0x3cc, %dx # Get CRTC port
+- inb %dx, %al
+- movb $0xd4, %dl
+- rorb %al # Mono or color?
+- jc set48a
+-
+- movb $0xb4, %dl
+-set48a: movw $0x0c11, %ax # Vertical sync end (also unlocks CR0-7)
+- call outidx
+- movw $0x0b06, %ax # Vertical total
+- call outidx
+- movw $0x3e07, %ax # (Vertical) overflow
+- call outidx
+- movw $0xea10, %ax # Vertical sync start
+- call outidx
+- movw $0xdf12, %ax # Vertical display end
+- call outidx
+- movw $0xe715, %ax # Vertical blank start
+- call outidx
+- movw $0x0416, %ax # Vertical blank end
+- call outidx
+- pushw %dx
+- movb $0xcc, %dl # Misc output register (read)
+- inb %dx, %al
+- movb $0xc2, %dl # (write)
+- andb $0x0d, %al # Preserve clock select bits and color bit
+- orb $0xe2, %al # Set correct sync polarity
+- outb %al, %dx
+- popw %dx
+- movw $0x501e, force_size
+- stc # That's all.
+- ret
+-
+-# Set the 80x34 mode (all VGA's). 480 scans, 14-pixel font.
+-set_80x34:
+- call set_80x30 # Set 480 scans
+- call set14 # And 14-pt font
+- movw $0xdb12, %ax # VGA vertical display end
+- movw $0x5022, force_size
+-setvde: call outidx
+- stc
+- ret
+-
+-# Set the 80x60 mode (all VGA's). 480 scans, 8-pixel font.
+-set_80x60:
+- call set_80x30 # Set 480 scans
+- call set_8pt # And 8-pt font
+- movw $0xdf12, %ax # VGA vertical display end
+- movw $0x503c, force_size
+- jmp setvde
+-
+-# Special hack for ThinkPad graphics
+-set_gfx:
+-#ifdef CONFIG_VIDEO_GFX_HACK
+- movw $VIDEO_GFX_BIOS_AX, %ax
+- movw $VIDEO_GFX_BIOS_BX, %bx
+- int $0x10
+- movw $VIDEO_GFX_DUMMY_RESOLUTION, force_size
+- stc
+-#endif
+- ret
+-
+-#ifdef CONFIG_VIDEO_RETAIN
+-
+-# Store screen contents to temporary buffer.
+-store_screen:
+- cmpb $0, do_restore # Already stored?
+- jnz stsr
+-
+- testb $CAN_USE_HEAP, loadflags # Have we space for storing?
+- jz stsr
+-
+- pushw %ax
+- pushw %bx
+- pushw force_size # Don't force specific size
+- movw $0, force_size
+- call mode_params # Obtain params of current mode
+- popw force_size
+- movb %fs:(PARAM_VIDEO_LINES), %ah
+- movb %fs:(PARAM_VIDEO_COLS), %al
+- movw %ax, %bx # BX=dimensions
+- mulb %ah
+- movw %ax, %cx # CX=number of characters
+- addw %ax, %ax # Calculate image size
+- addw $modelist+1024+4, %ax
+- cmpw heap_end_ptr, %ax
+- jnc sts1 # Unfortunately, out of memory
+-
+- movw %fs:(PARAM_CURSOR_POS), %ax # Store mode params
+- leaw modelist+1024, %di
+- stosw
+- movw %bx, %ax
+- stosw
+- pushw %ds # Store the screen
+- movw video_segment, %ds
+- xorw %si, %si
+- rep
+- movsw
+- popw %ds
+- incb do_restore # Screen will be restored later
+-sts1: popw %bx
+- popw %ax
+-stsr: ret
+-
+-# Restore screen contents from temporary buffer.
+-restore_screen:
+- cmpb $0, do_restore # Has the screen been stored?
+- jz res1
+-
+- call mode_params # Get parameters of current mode
+- movb %fs:(PARAM_VIDEO_LINES), %cl
+- movb %fs:(PARAM_VIDEO_COLS), %ch
+- leaw modelist+1024, %si # Screen buffer
+- lodsw # Set cursor position
+- movw %ax, %dx
+- cmpb %cl, %dh
+- jc res2
+-
+- movb %cl, %dh
+- decb %dh
+-res2: cmpb %ch, %dl
+- jc res3
+-
+- movb %ch, %dl
+- decb %dl
+-res3: movb $0x02, %ah
+- movb $0x00, %bh
+- int $0x10
+- lodsw # Display size
+- movb %ah, %dl # DL=number of lines
+- movb $0, %ah # BX=phys. length of orig. line
+- movw %ax, %bx
+- cmpb %cl, %dl # Too many?
+- jc res4
+-
+- pushw %ax
+- movb %dl, %al
+- subb %cl, %al
+- mulb %bl
+- addw %ax, %si
+- addw %ax, %si
+- popw %ax
+- movb %cl, %dl
+-res4: cmpb %ch, %al # Too wide?
+- jc res5
+-
+- movb %ch, %al # AX=width of src. line
+-res5: movb $0, %cl
+- xchgb %ch, %cl
+- movw %cx, %bp # BP=width of dest. line
+- pushw %es
+- movw video_segment, %es
+- xorw %di, %di # Move the data
+- addw %bx, %bx # Convert BX and BP to _bytes_
+- addw %bp, %bp
+-res6: pushw %si
+- pushw %di
+- movw %ax, %cx
+- rep
+- movsw
+- popw %di
+- popw %si
+- addw %bp, %di
+- addw %bx, %si
+- decb %dl
+- jnz res6
+-
+- popw %es # Done
+-res1: ret
+-#endif /* CONFIG_VIDEO_RETAIN */
+-
+-# Write to indexed VGA register (AL=index, AH=data, DX=index reg. port)
+-outidx: outb %al, %dx
+- pushw %ax
+- movb %ah, %al
+- incw %dx
+- outb %al, %dx
+- decw %dx
+- popw %ax
+- ret
+-
+-# Build the table of video modes (stored after the setup.S code at the
+-# `modelist' label. Each video mode record looks like:
+-# .word MODE-ID (our special mode ID (see above))
+-# .byte rows (number of rows)
+-# .byte columns (number of columns)
+-# Returns address of the end of the table in DI, the end is marked
+-# with a ASK_VGA ID.
+-mode_table:
+- movw mt_end, %di # Already filled?
+- orw %di, %di
+- jnz mtab1x
+-
+- leaw modelist, %di # Store standard modes:
+- movl $VIDEO_80x25 + 0x50190000, %eax # The 80x25 mode (ALL)
+- stosl
+- movb adapter, %al # CGA/MDA/HGA -- no more modes
+- orb %al, %al
+- jz mtabe
+-
+- decb %al
+- jnz mtabv
+-
+- movl $VIDEO_8POINT + 0x502b0000, %eax # The 80x43 EGA mode
+- stosl
+- jmp mtabe
+-
+-mtab1x: jmp mtab1
+-
+-mtabv: leaw vga_modes, %si # All modes for std VGA
+- movw $vga_modes_end-vga_modes, %cx
+- rep # I'm unable to use movsw as I don't know how to store a half
+- movsb # of the expression above to cx without using explicit shr.
+-
+- cmpb $0, scanning # Mode scan requested?
+- jz mscan1
+-
+- call mode_scan
+-mscan1:
+-
+-#ifdef CONFIG_VIDEO_LOCAL
+- call local_modes
+-#endif /* CONFIG_VIDEO_LOCAL */
+-
+-#ifdef CONFIG_VIDEO_VESA
+- call vesa_modes # Detect VESA VGA modes
+-#endif /* CONFIG_VIDEO_VESA */
+-
+-#ifdef CONFIG_VIDEO_SVGA
+- cmpb $0, scanning # Bypass when scanning
+- jnz mscan2
+-
+- call svga_modes # Detect SVGA cards & modes
+-mscan2:
+-#endif /* CONFIG_VIDEO_SVGA */
+-
+-mtabe:
+-
+-#ifdef CONFIG_VIDEO_COMPACT
+- leaw modelist, %si
+- movw %di, %dx
+- movw %si, %di
+-cmt1: cmpw %dx, %si # Scan all modes
+- jz cmt2
+-
+- leaw modelist, %bx # Find in previous entries
+- movw 2(%si), %cx
+-cmt3: cmpw %bx, %si
+- jz cmt4
+-
+- cmpw 2(%bx), %cx # Found => don't copy this entry
+- jz cmt5
+-
+- addw $4, %bx
+- jmp cmt3
+-
+-cmt4: movsl # Copy entry
+- jmp cmt1
+-
+-cmt5: addw $4, %si # Skip entry
+- jmp cmt1
+-
+-cmt2:
+-#endif /* CONFIG_VIDEO_COMPACT */
+-
+- movw $ASK_VGA, (%di) # End marker
+- movw %di, mt_end
+-mtab1: leaw modelist, %si # SI=mode list, DI=list end
+-ret0: ret
+-
+-# Modes usable on all standard VGAs
+-vga_modes:
+- .word VIDEO_8POINT
+- .word 0x5032 # 80x50
+- .word VIDEO_80x43
+- .word 0x502b # 80x43
+- .word VIDEO_80x28
+- .word 0x501c # 80x28
+- .word VIDEO_80x30
+- .word 0x501e # 80x30
+- .word VIDEO_80x34
+- .word 0x5022 # 80x34
+- .word VIDEO_80x60
+- .word 0x503c # 80x60
+-#ifdef CONFIG_VIDEO_GFX_HACK
+- .word VIDEO_GFX_HACK
+- .word VIDEO_GFX_DUMMY_RESOLUTION
+-#endif
+-
+-vga_modes_end:
+-# Detect VESA modes.
+-
+-#ifdef CONFIG_VIDEO_VESA
+-vesa_modes:
+- cmpb $2, adapter # VGA only
+- jnz ret0
+-
+- movw %di, %bp # BP=original mode table end
+- addw $0x200, %di # Buffer space
+- movw $0x4f00, %ax # VESA Get card info call
+- int $0x10
+- movw %bp, %di
+- cmpw $0x004f, %ax # Successful?
+- jnz ret0
+-
+- cmpw $0x4556, 0x200(%di)
+- jnz ret0
+-
+- cmpw $0x4153, 0x202(%di)
+- jnz ret0
+-
+- movw $vesa_name, card_name # Set name to "VESA VGA"
+- pushw %gs
+- lgsw 0x20e(%di), %si # GS:SI=mode list
+- movw $128, %cx # Iteration limit
+-vesa1:
+-# gas version 2.9.1, using BFD version 2.9.1.0.23 buggers the next inst.
+-# XXX: lodsw %gs:(%si), %ax # Get next mode in the list
+- gs; lodsw
+- cmpw $0xffff, %ax # End of the table?
+- jz vesar
+-
+- cmpw $0x0080, %ax # Check validity of mode ID
+- jc vesa2
+-
+- orb %ah, %ah # Valid IDs: 0x0000-0x007f/0x0100-0x07ff
+- jz vesan # Certain BIOSes report 0x80-0xff!
+-
+- cmpw $0x0800, %ax
+- jnc vesae
+-
+-vesa2: pushw %cx
+- movw %ax, %cx # Get mode information structure
+- movw $0x4f01, %ax
+- int $0x10
+- movw %cx, %bx # BX=mode number
+- addb $VIDEO_FIRST_VESA>>8, %bh
+- popw %cx
+- cmpw $0x004f, %ax
+- jnz vesan # Don't report errors (buggy BIOSES)
+-
+- movb (%di), %al # Check capabilities. We require
+- andb $0x19, %al # a color text mode.
+- cmpb $0x09, %al
+- jnz vesan
+-
+- cmpw $0xb800, 8(%di) # Standard video memory address required
+- jnz vesan
+-
+- testb $2, (%di) # Mode characteristics supplied?
+- movw %bx, (%di) # Store mode number
+- jz vesa3
+-
+- xorw %dx, %dx
+- movw 0x12(%di), %bx # Width
+- orb %bh, %bh
+- jnz vesan
+-
+- movb %bl, 0x3(%di)
+- movw 0x14(%di), %ax # Height
+- orb %ah, %ah
+- jnz vesan
+-
+- movb %al, 2(%di)
+- mulb %bl
+- cmpw $8193, %ax # Small enough for Linux console driver?
+- jnc vesan
+-
+- jmp vesaok
+-
+-vesa3: subw $0x8108, %bx # This mode has no detailed info specified,
+- jc vesan # so it must be a standard VESA mode.
+-
+- cmpw $5, %bx
+- jnc vesan
+-
+- movw vesa_text_mode_table(%bx), %ax
+- movw %ax, 2(%di)
+-vesaok: addw $4, %di # The mode is valid. Store it.
+-vesan: loop vesa1 # Next mode. Limit exceeded => error
+-vesae: leaw vesaer, %si
+- call prtstr
+- movw %bp, %di # Discard already found modes.
+-vesar: popw %gs
+- ret
+-
+-# Dimensions of standard VESA text modes
+-vesa_text_mode_table:
+- .byte 60, 80 # 0108
+- .byte 25, 132 # 0109
+- .byte 43, 132 # 010A
+- .byte 50, 132 # 010B
+- .byte 60, 132 # 010C
+-#endif /* CONFIG_VIDEO_VESA */
+-
+-# Scan for video modes. A bit dirty, but should work.
+-mode_scan:
+- movw $0x0100, %cx # Start with mode 0
+-scm1: movb $0, %ah # Test the mode
+- movb %cl, %al
+- int $0x10
+- movb $0x0f, %ah
+- int $0x10
+- cmpb %cl, %al
+- jnz scm2 # Mode not set
+-
+- movw $0x3c0, %dx # Test if it's a text mode
+- movb $0x10, %al # Mode bits
+- call inidx
+- andb $0x03, %al
+- jnz scm2
+-
+- movb $0xce, %dl # Another set of mode bits
+- movb $0x06, %al
+- call inidx
+- shrb %al
+- jc scm2
+-
+- movb $0xd4, %dl # Cursor location
+- movb $0x0f, %al
+- call inidx
+- orb %al, %al
+- jnz scm2
+-
+- movw %cx, %ax # Ok, store the mode
+- stosw
+- movb %gs:(0x484), %al # Number of rows
+- incb %al
+- stosb
+- movw %gs:(0x44a), %ax # Number of columns
+- stosb
+-scm2: incb %cl
+- jns scm1
+-
+- movw $0x0003, %ax # Return back to mode 3
+- int $0x10
+- ret
+-
+-tstidx: outw %ax, %dx # OUT DX,AX and inidx
+-inidx: outb %al, %dx # Read from indexed VGA register
+- incw %dx # AL=index, DX=index reg port -> AL=data
+- inb %dx, %al
+- decw %dx
+- ret
+-
+-# Try to detect type of SVGA card and supply (usually approximate) video
+-# mode table for it.
+-
+-#ifdef CONFIG_VIDEO_SVGA
+-svga_modes:
+- leaw svga_table, %si # Test all known SVGA adapters
+-dosvga: lodsw
+- movw %ax, %bp # Default mode table
+- orw %ax, %ax
+- jz didsv1
+-
+- lodsw # Pointer to test routine
+- pushw %si
+- pushw %di
+- pushw %es
+- movw $0xc000, %bx
+- movw %bx, %es
+- call *%ax # Call test routine
+- popw %es
+- popw %di
+- popw %si
+- orw %bp, %bp
+- jz dosvga
+-
+- movw %bp, %si # Found, copy the modes
+- movb svga_prefix, %ah
+-cpsvga: lodsb
+- orb %al, %al
+- jz didsv
+-
+- stosw
+- movsw
+- jmp cpsvga
+-
+-didsv: movw %si, card_name # Store pointer to card name
+-didsv1: ret
+-
+-# Table of all known SVGA cards. For each card, we store a pointer to
+-# a table of video modes supported by the card and a pointer to a routine
+-# used for testing of presence of the card. The video mode table is always
+-# followed by the name of the card or the chipset.
+-svga_table:
+- .word ati_md, ati_test
+- .word oak_md, oak_test
+- .word paradise_md, paradise_test
+- .word realtek_md, realtek_test
+- .word s3_md, s3_test
+- .word chips_md, chips_test
+- .word video7_md, video7_test
+- .word cirrus5_md, cirrus5_test
+- .word cirrus6_md, cirrus6_test
+- .word cirrus1_md, cirrus1_test
+- .word ahead_md, ahead_test
+- .word everex_md, everex_test
+- .word genoa_md, genoa_test
+- .word trident_md, trident_test
+- .word tseng_md, tseng_test
+- .word 0
+-
+-# Test routines and mode tables:
+-
+-# S3 - The test algorithm was taken from the SuperProbe package
+-# for XFree86 1.2.1. Report bugs to Christoph.Niemann@linux.org
+-s3_test:
+- movw $0x0f35, %cx # we store some constants in cl/ch
+- movw $0x03d4, %dx
+- movb $0x38, %al
+- call inidx
+- movb %al, %bh # store current CRT-register 0x38
+- movw $0x0038, %ax
+- call outidx # disable writing to special regs
+- movb %cl, %al # check whether we can write special reg 0x35
+- call inidx
+- movb %al, %bl # save the current value of CRT reg 0x35
+- andb $0xf0, %al # clear bits 0-3
+- movb %al, %ah
+- movb %cl, %al # and write it to CRT reg 0x35
+- call outidx
+- call inidx # now read it back
+- andb %ch, %al # clear the upper 4 bits
+- jz s3_2 # the first test failed. But we have a
+-
+- movb %bl, %ah # second chance
+- movb %cl, %al
+- call outidx
+- jmp s3_1 # do the other tests
+-
+-s3_2: movw %cx, %ax # load ah with 0xf and al with 0x35
+- orb %bl, %ah # set the upper 4 bits of ah with the orig value
+- call outidx # write ...
+- call inidx # ... and reread
+- andb %cl, %al # turn off the upper 4 bits
+- pushw %ax
+- movb %bl, %ah # restore old value in register 0x35
+- movb %cl, %al
+- call outidx
+- popw %ax
+- cmpb %ch, %al # setting lower 4 bits was successful => bad
+- je no_s3 # writing is allowed => this is not an S3
+-
+-s3_1: movw $0x4838, %ax # allow writing to special regs by putting
+- call outidx # magic number into CRT-register 0x38
+- movb %cl, %al # check whether we can write special reg 0x35
+- call inidx
+- movb %al, %bl
+- andb $0xf0, %al
+- movb %al, %ah
+- movb %cl, %al
+- call outidx
+- call inidx
+- andb %ch, %al
+- jnz no_s3 # no, we can't write => no S3
+-
+- movw %cx, %ax
+- orb %bl, %ah
+- call outidx
+- call inidx
+- andb %ch, %al
+- pushw %ax
+- movb %bl, %ah # restore old value in register 0x35
+- movb %cl, %al
+- call outidx
+- popw %ax
+- cmpb %ch, %al
+- jne no_s31 # writing not possible => no S3
+- movb $0x30, %al
+- call inidx # now get the S3 id ...
+- leaw idS3, %di
+- movw $0x10, %cx
+- repne
+- scasb
+- je no_s31
+-
+- movb %bh, %ah
+- movb $0x38, %al
+- jmp s3rest
+-
+-no_s3: movb $0x35, %al # restore CRT register 0x35
+- movb %bl, %ah
+- call outidx
+-no_s31: xorw %bp, %bp # Detection failed
+-s3rest: movb %bh, %ah
+- movb $0x38, %al # restore old value of CRT register 0x38
+- jmp outidx
+-
+-idS3: .byte 0x81, 0x82, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95
+- .byte 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa8, 0xb0
+-
+-s3_md: .byte 0x54, 0x2b, 0x84
+- .byte 0x55, 0x19, 0x84
+- .byte 0
+- .ascii "S3"
+- .byte 0
+-
+-# ATI cards.
+-ati_test:
+- leaw idati, %si
+- movw $0x31, %di
+- movw $0x09, %cx
+- repe
+- cmpsb
+- je atiok
+-
+- xorw %bp, %bp
+-atiok: ret
+-
+-idati: .ascii "761295520"
+-
+-ati_md: .byte 0x23, 0x19, 0x84
+- .byte 0x33, 0x2c, 0x84
+- .byte 0x22, 0x1e, 0x64
+- .byte 0x21, 0x19, 0x64
+- .byte 0x58, 0x21, 0x50
+- .byte 0x5b, 0x1e, 0x50
+- .byte 0
+- .ascii "ATI"
+- .byte 0
+-
+-# AHEAD
+-ahead_test:
+- movw $0x200f, %ax
+- movw $0x3ce, %dx
+- outw %ax, %dx
+- incw %dx
+- inb %dx, %al
+- cmpb $0x20, %al
+- je isahed
+-
+- cmpb $0x21, %al
+- je isahed
+-
+- xorw %bp, %bp
+-isahed: ret
+-
+-ahead_md:
+- .byte 0x22, 0x2c, 0x84
+- .byte 0x23, 0x19, 0x84
+- .byte 0x24, 0x1c, 0x84
+- .byte 0x2f, 0x32, 0xa0
+- .byte 0x32, 0x22, 0x50
+- .byte 0x34, 0x42, 0x50
+- .byte 0
+- .ascii "Ahead"
+- .byte 0
+-
+-# Chips & Tech.
+-chips_test:
+- movw $0x3c3, %dx
+- inb %dx, %al
+- orb $0x10, %al
+- outb %al, %dx
+- movw $0x104, %dx
+- inb %dx, %al
+- movb %al, %bl
+- movw $0x3c3, %dx
+- inb %dx, %al
+- andb $0xef, %al
+- outb %al, %dx
+- cmpb $0xa5, %bl
+- je cantok
+-
+- xorw %bp, %bp
+-cantok: ret
+-
+-chips_md:
+- .byte 0x60, 0x19, 0x84
+- .byte 0x61, 0x32, 0x84
+- .byte 0
+- .ascii "Chips & Technologies"
+- .byte 0
+-
+-# Cirrus Logic 5X0
+-cirrus1_test:
+- movw $0x3d4, %dx
+- movb $0x0c, %al
+- outb %al, %dx
+- incw %dx
+- inb %dx, %al
+- movb %al, %bl
+- xorb %al, %al
+- outb %al, %dx
+- decw %dx
+- movb $0x1f, %al
+- outb %al, %dx
+- incw %dx
+- inb %dx, %al
+- movb %al, %bh
+- xorb %ah, %ah
+- shlb $4, %al
+- movw %ax, %cx
+- movb %bh, %al
+- shrb $4, %al
+- addw %ax, %cx
+- shlw $8, %cx
+- addw $6, %cx
+- movw %cx, %ax
+- movw $0x3c4, %dx
+- outw %ax, %dx
+- incw %dx
+- inb %dx, %al
+- andb %al, %al
+- jnz nocirr
+-
+- movb %bh, %al
+- outb %al, %dx
+- inb %dx, %al
+- cmpb $0x01, %al
+- je iscirr
+-
+-nocirr: xorw %bp, %bp
+-iscirr: movw $0x3d4, %dx
+- movb %bl, %al
+- xorb %ah, %ah
+- shlw $8, %ax
+- addw $0x0c, %ax
+- outw %ax, %dx
+- ret
+-
+-cirrus1_md:
+- .byte 0x1f, 0x19, 0x84
+- .byte 0x20, 0x2c, 0x84
+- .byte 0x22, 0x1e, 0x84
+- .byte 0x31, 0x25, 0x64
+- .byte 0
+- .ascii "Cirrus Logic 5X0"
+- .byte 0
+-
+-# Cirrus Logic 54XX
+-cirrus5_test:
+- movw $0x3c4, %dx
+- movb $6, %al
+- call inidx
+- movb %al, %bl # BL=backup
+- movw $6, %ax
+- call tstidx
+- cmpb $0x0f, %al
+- jne c5fail
+-
+- movw $0x1206, %ax
+- call tstidx
+- cmpb $0x12, %al
+- jne c5fail
+-
+- movb $0x1e, %al
+- call inidx
+- movb %al, %bh
+- movb %bh, %ah
+- andb $0xc0, %ah
+- movb $0x1e, %al
+- call tstidx
+- andb $0x3f, %al
+- jne c5xx
+-
+- movb $0x1e, %al
+- movb %bh, %ah
+- orb $0x3f, %ah
+- call tstidx
+- xorb $0x3f, %al
+- andb $0x3f, %al
+-c5xx: pushf
+- movb $0x1e, %al
+- movb %bh, %ah
+- outw %ax, %dx
+- popf
+- je c5done
+-
+-c5fail: xorw %bp, %bp
+-c5done: movb $6, %al
+- movb %bl, %ah
+- outw %ax, %dx
+- ret
+-
+-cirrus5_md:
+- .byte 0x14, 0x19, 0x84
+- .byte 0x54, 0x2b, 0x84
+- .byte 0
+- .ascii "Cirrus Logic 54XX"
+- .byte 0
+-
+-# Cirrus Logic 64XX -- no known extra modes, but must be identified, because
+-# it's misidentified by the Ahead test.
+-cirrus6_test:
+- movw $0x3ce, %dx
+- movb $0x0a, %al
+- call inidx
+- movb %al, %bl # BL=backup
+- movw $0xce0a, %ax
+- call tstidx
+- orb %al, %al
+- jne c2fail
+-
+- movw $0xec0a, %ax
+- call tstidx
+- cmpb $0x01, %al
+- jne c2fail
+-
+- movb $0xaa, %al
+- call inidx # 4X, 5X, 7X and 8X are valid 64XX chip ID's.
+- shrb $4, %al
+- subb $4, %al
+- jz c6done
+-
+- decb %al
+- jz c6done
+-
+- subb $2, %al
+- jz c6done
+-
+- decb %al
+- jz c6done
+-
+-c2fail: xorw %bp, %bp
+-c6done: movb $0x0a, %al
+- movb %bl, %ah
+- outw %ax, %dx
+- ret
+-
+-cirrus6_md:
+- .byte 0
+- .ascii "Cirrus Logic 64XX"
+- .byte 0
+-
+-# Everex / Trident
+-everex_test:
+- movw $0x7000, %ax
+- xorw %bx, %bx
+- int $0x10
+- cmpb $0x70, %al
+- jne noevrx
+-
+- shrw $4, %dx
+- cmpw $0x678, %dx
+- je evtrid
+-
+- cmpw $0x236, %dx
+- jne evrxok
+-
+-evtrid: leaw trident_md, %bp
+-evrxok: ret
+-
+-noevrx: xorw %bp, %bp
+- ret
+-
+-everex_md:
+- .byte 0x03, 0x22, 0x50
+- .byte 0x04, 0x3c, 0x50
+- .byte 0x07, 0x2b, 0x64
+- .byte 0x08, 0x4b, 0x64
+- .byte 0x0a, 0x19, 0x84
+- .byte 0x0b, 0x2c, 0x84
+- .byte 0x16, 0x1e, 0x50
+- .byte 0x18, 0x1b, 0x64
+- .byte 0x21, 0x40, 0xa0
+- .byte 0x40, 0x1e, 0x84
+- .byte 0
+- .ascii "Everex/Trident"
+- .byte 0
+-
+-# Genoa.
+-genoa_test:
+- leaw idgenoa, %si # Check Genoa 'clues'
+- xorw %ax, %ax
+- movb %es:(0x37), %al
+- movw %ax, %di
+- movw $0x04, %cx
+- decw %si
+- decw %di
+-l1: incw %si
+- incw %di
+- movb (%si), %al
+- testb %al, %al
+- jz l2
+-
+- cmpb %es:(%di), %al
+-l2: loope l1
+- orw %cx, %cx
+- je isgen
+-
+- xorw %bp, %bp
+-isgen: ret
+-
+-idgenoa: .byte 0x77, 0x00, 0x99, 0x66
+-
+-genoa_md:
+- .byte 0x58, 0x20, 0x50
+- .byte 0x5a, 0x2a, 0x64
+- .byte 0x60, 0x19, 0x84
+- .byte 0x61, 0x1d, 0x84
+- .byte 0x62, 0x20, 0x84
+- .byte 0x63, 0x2c, 0x84
+- .byte 0x64, 0x3c, 0x84
+- .byte 0x6b, 0x4f, 0x64
+- .byte 0x72, 0x3c, 0x50
+- .byte 0x74, 0x42, 0x50
+- .byte 0x78, 0x4b, 0x64
+- .byte 0
+- .ascii "Genoa"
+- .byte 0
+-
+-# OAK
+-oak_test:
+- leaw idoakvga, %si
+- movw $0x08, %di
+- movw $0x08, %cx
+- repe
+- cmpsb
+- je isoak
+-
+- xorw %bp, %bp
+-isoak: ret
+-
+-idoakvga: .ascii "OAK VGA "
+-
+-oak_md: .byte 0x4e, 0x3c, 0x50
+- .byte 0x4f, 0x3c, 0x84
+- .byte 0x50, 0x19, 0x84
+- .byte 0x51, 0x2b, 0x84
+- .byte 0
+- .ascii "OAK"
+- .byte 0
+-
+-# WD Paradise.
+-paradise_test:
+- leaw idparadise, %si
+- movw $0x7d, %di
+- movw $0x04, %cx
+- repe
+- cmpsb
+- je ispara
+-
+- xorw %bp, %bp
+-ispara: ret
+-
+-idparadise: .ascii "VGA="
+-
+-paradise_md:
+- .byte 0x41, 0x22, 0x50
+- .byte 0x47, 0x1c, 0x84
+- .byte 0x55, 0x19, 0x84
+- .byte 0x54, 0x2c, 0x84
+- .byte 0
+- .ascii "Paradise"
+- .byte 0
+-
+-# Trident.
+-trident_test:
+- movw $0x3c4, %dx
+- movb $0x0e, %al
+- outb %al, %dx
+- incw %dx
+- inb %dx, %al
+- xchgb %al, %ah
+- xorb %al, %al
+- outb %al, %dx
+- inb %dx, %al
+- xchgb %ah, %al
+- movb %al, %bl # Strange thing ... in the book this wasn't
+- andb $0x02, %bl # necessary but it worked on my card which
+- jz setb2 # is a trident. Without it the screen goes
+- # blurred ...
+- andb $0xfd, %al
+- jmp clrb2
+-
+-setb2: orb $0x02, %al
+-clrb2: outb %al, %dx
+- andb $0x0f, %ah
+- cmpb $0x02, %ah
+- je istrid
+-
+- xorw %bp, %bp
+-istrid: ret
+-
+-trident_md:
+- .byte 0x50, 0x1e, 0x50
+- .byte 0x51, 0x2b, 0x50
+- .byte 0x52, 0x3c, 0x50
+- .byte 0x57, 0x19, 0x84
+- .byte 0x58, 0x1e, 0x84
+- .byte 0x59, 0x2b, 0x84
+- .byte 0x5a, 0x3c, 0x84
+- .byte 0
+- .ascii "Trident"
+- .byte 0
+-
+-# Tseng.
+-tseng_test:
+- movw $0x3cd, %dx
+- inb %dx, %al # Could things be this simple ! :-)
+- movb %al, %bl
+- movb $0x55, %al
+- outb %al, %dx
+- inb %dx, %al
+- movb %al, %ah
+- movb %bl, %al
+- outb %al, %dx
+- cmpb $0x55, %ah
+- je istsen
+-
+-isnot: xorw %bp, %bp
+-istsen: ret
+-
+-tseng_md:
+- .byte 0x26, 0x3c, 0x50
+- .byte 0x2a, 0x28, 0x64
+- .byte 0x23, 0x19, 0x84
+- .byte 0x24, 0x1c, 0x84
+- .byte 0x22, 0x2c, 0x84
+- .byte 0x21, 0x3c, 0x84
+- .byte 0
+- .ascii "Tseng"
+- .byte 0
+-
+-# Video7.
+-video7_test:
+- movw $0x3cc, %dx
+- inb %dx, %al
+- movw $0x3b4, %dx
+- andb $0x01, %al
+- jz even7
+-
+- movw $0x3d4, %dx
+-even7: movb $0x0c, %al
+- outb %al, %dx
+- incw %dx
+- inb %dx, %al
+- movb %al, %bl
+- movb $0x55, %al
+- outb %al, %dx
+- inb %dx, %al
+- decw %dx
+- movb $0x1f, %al
+- outb %al, %dx
+- incw %dx
+- inb %dx, %al
+- movb %al, %bh
+- decw %dx
+- movb $0x0c, %al
+- outb %al, %dx
+- incw %dx
+- movb %bl, %al
+- outb %al, %dx
+- movb $0x55, %al
+- xorb $0xea, %al
+- cmpb %bh, %al
+- jne isnot
+-
+- movb $VIDEO_FIRST_V7>>8, svga_prefix # Use special mode switching
+- ret
+-
+-video7_md:
+- .byte 0x40, 0x2b, 0x50
+- .byte 0x43, 0x3c, 0x50
+- .byte 0x44, 0x3c, 0x64
+- .byte 0x41, 0x19, 0x84
+- .byte 0x42, 0x2c, 0x84
+- .byte 0x45, 0x1c, 0x84
+- .byte 0
+- .ascii "Video 7"
+- .byte 0
+-
+-# Realtek VGA
+-realtek_test:
+- leaw idrtvga, %si
+- movw $0x45, %di
+- movw $0x0b, %cx
+- repe
+- cmpsb
+- je isrt
+-
+- xorw %bp, %bp
+-isrt: ret
+-
+-idrtvga: .ascii "REALTEK VGA"
+-
+-realtek_md:
+- .byte 0x1a, 0x3c, 0x50
+- .byte 0x1b, 0x19, 0x84
+- .byte 0x1c, 0x1e, 0x84
+- .byte 0x1d, 0x2b, 0x84
+- .byte 0x1e, 0x3c, 0x84
+- .byte 0
+- .ascii "REALTEK"
+- .byte 0
+-
+-#endif /* CONFIG_VIDEO_SVGA */
+-
+-# User-defined local mode table (VGA only)
+-#ifdef CONFIG_VIDEO_LOCAL
+-local_modes:
+- leaw local_mode_table, %si
+-locm1: lodsw
+- orw %ax, %ax
+- jz locm2
+-
+- stosw
+- movsw
+- jmp locm1
+-
+-locm2: ret
+-
+-# This is the table of local video modes which can be supplied manually
+-# by the user. Each entry consists of mode ID (word) and dimensions
+-# (byte for column count and another byte for row count). These modes
+-# are placed before all SVGA and VESA modes and override them if table
+-# compacting is enabled. The table must end with a zero word followed
+-# by NUL-terminated video adapter name.
+-local_mode_table:
+- .word 0x0100 # Example: 40x25
+- .byte 25,40
+- .word 0
+- .ascii "Local"
+- .byte 0
+-#endif /* CONFIG_VIDEO_LOCAL */
+-
+-# Read a key and return the ASCII code in al, scan code in ah
+-getkey: xorb %ah, %ah
+- int $0x16
+- ret
+-
+-# Read a key with a timeout of 30 seconds.
+-# The hardware clock is used to get the time.
+-getkt: call gettime
+- addb $30, %al # Wait 30 seconds
+- cmpb $60, %al
+- jl lminute
+-
+- subb $60, %al
+-lminute:
+- movb %al, %cl
+-again: movb $0x01, %ah
+- int $0x16
+- jnz getkey # key pressed, so get it
+-
+- call gettime
+- cmpb %cl, %al
+- jne again
+-
+- movb $0x20, %al # timeout, return `space'
+- ret
+-
+-# Flush the keyboard buffer
+-flush: movb $0x01, %ah
+- int $0x16
+- jz empty
+-
+- xorb %ah, %ah
+- int $0x16
+- jmp flush
+-
+-empty: ret
+-
+-# Print hexadecimal number.
+-prthw: pushw %ax
+- movb %ah, %al
+- call prthb
+- popw %ax
+-prthb: pushw %ax
+- shrb $4, %al
+- call prthn
+- popw %ax
+- andb $0x0f, %al
+-prthn: cmpb $0x0a, %al
+- jc prth1
+-
+- addb $0x07, %al
+-prth1: addb $0x30, %al
+- jmp prtchr
+-
+-# Print decimal number in al
+-prtdec: pushw %ax
+- pushw %cx
+- xorb %ah, %ah
+- movb $0x0a, %cl
+- idivb %cl
+- cmpb $0x09, %al
+- jbe lt100
+-
+- call prtdec
+- jmp skip10
+-
+-lt100: addb $0x30, %al
+- call prtchr
+-skip10: movb %ah, %al
+- addb $0x30, %al
+- call prtchr
+- popw %cx
+- popw %ax
+- ret
+-
+-store_edid:
+-#ifdef CONFIG_FIRMWARE_EDID
+- pushw %es # just save all registers
+- pushw %ax
+- pushw %bx
+- pushw %cx
+- pushw %dx
+- pushw %di
+-
+- pushw %fs
+- popw %es
+-
+- movl $0x13131313, %eax # memset block with 0x13
+- movw $32, %cx
+- movw $0x140, %di
+- cld
+- rep
+- stosl
+-
+- cmpw $0x0200, vbe_version # only do EDID on >= VBE2.0
+- jl no_edid
+-
+- pushw %es # save ES
+- xorw %di, %di # Report Capability
+- pushw %di
+- popw %es # ES:DI must be 0:0
+- movw $0x4f15, %ax
+- xorw %bx, %bx
+- xorw %cx, %cx
+- int $0x10
+- popw %es # restore ES
+-
+- cmpb $0x00, %ah # call successful
+- jne no_edid
+-
+- cmpb $0x4f, %al # function supported
+- jne no_edid
+-
+- movw $0x4f15, %ax # do VBE/DDC
+- movw $0x01, %bx
+- movw $0x00, %cx
+- movw $0x00, %dx
+- movw $0x140, %di
+- int $0x10
+-
+-no_edid:
+- popw %di # restore all registers
+- popw %dx
+- popw %cx
+- popw %bx
+- popw %ax
+- popw %es
+-#endif
+- ret
+-
+-# VIDEO_SELECT-only variables
+-mt_end: .word 0 # End of video mode table if built
+-edit_buf: .space 6 # Line editor buffer
+-card_name: .word 0 # Pointer to adapter name
+-scanning: .byte 0 # Performing mode scan
+-do_restore: .byte 0 # Screen contents altered during mode change
+-svga_prefix: .byte VIDEO_FIRST_BIOS>>8 # Default prefix for BIOS modes
+-graphic_mode: .byte 0 # Graphic mode with a linear frame buffer
+-dac_size: .byte 6 # DAC bit depth
+-vbe_version: .word 0 # VBE bios version
+-
+-# Status messages
+-keymsg: .ascii "Press <RETURN> to see video modes available, "
+- .ascii "<SPACE> to continue or wait 30 secs"
+- .byte 0x0d, 0x0a, 0
+-
+-listhdr: .byte 0x0d, 0x0a
+- .ascii "Mode: COLSxROWS:"
+-
+-crlft: .byte 0x0d, 0x0a, 0
+-
+-prompt: .byte 0x0d, 0x0a
+- .asciz "Enter mode number or `scan': "
+-
+-unknt: .asciz "Unknown mode ID. Try again."
+-
+-badmdt: .ascii "You passed an undefined mode number."
+- .byte 0x0d, 0x0a, 0
+-
+-vesaer: .ascii "Error: Scanning of VESA modes failed. Please "
+- .ascii "report to <mj@ucw.cz>."
+- .byte 0x0d, 0x0a, 0
+-
+-old_name: .asciz "CGA/MDA/HGA"
+-
+-ega_name: .asciz "EGA"
+-
+-svga_name: .ascii " "
+-
+-vga_name: .asciz "VGA"
+-
+-vesa_name: .asciz "VESA"
+-
+-name_bann: .asciz "Video adapter: "
+-#endif /* CONFIG_VIDEO_SELECT */
+-
+-# Other variables:
+-adapter: .byte 0 # Video adapter: 0=CGA/MDA/HGA,1=EGA,2=VGA
+-video_segment: .word 0xb800 # Video memory segment
+-force_size: .word 0 # Use this size instead of the one in BIOS vars
+diff -puN /dev/null arch/i386/boot/video.c
+--- /dev/null
++++ a/arch/i386/boot/video.c
+@@ -0,0 +1,456 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/video.c
++ *
++ * Select video mode
++ */
++
++#include "boot.h"
++#include "video.h"
++#include "vesa.h"
++
++/*
++ * Mode list variables
++ */
++static struct card_info cards[]; /* List of cards to probe for */
++
++/*
++ * Common variables
++ */
++int adapter; /* 0=CGA/MDA/HGC, 1=EGA, 2=VGA+ */
++u16 video_segment;
++int force_x, force_y; /* Don't query the BIOS for cols/rows */
++
++int do_restore = 0; /* Screen contents changed during mode flip */
++int graphic_mode; /* Graphic mode with linear frame buffer */
++
++static void store_cursor_position(void)
++{
++ u16 curpos;
++ u16 ax, bx;
++
++ ax = 0x0300;
++ bx = 0;
++ asm(INT10
++ : "=d" (curpos), "+a" (ax), "+b" (bx)
++ : : "ecx", "esi", "edi");
++
++ boot_params.screen_info.orig_x = curpos;
++ boot_params.screen_info.orig_y = curpos >> 8;
++}
++
++static void store_video_mode(void)
++{
++ u16 ax, page;
++
++ /* N.B.: the saving of the video page here is a bit silly,
++ since we pretty much assume page 0 everywhere. */
++ ax = 0x0f00;
++ asm(INT10
++ : "+a" (ax), "=b" (page)
++ : : "ecx", "edx", "esi", "edi");
++
++ /* Not all BIOSes are clean with respect to the top bit */
++ boot_params.screen_info.orig_video_mode = ax & 0x7f;
++ boot_params.screen_info.orig_video_page = page;
++}
++
++/*
++ * Store the video mode parameters for later usage by the kernel.
++ * This is done by asking the BIOS except for the rows/columns
++ * parameters in the default 80x25 mode -- these are set directly,
++ * because some very obscure BIOSes supply insane values.
++ */
++static void store_mode_params(void)
++{
++ u16 font_size;
++ int x, y;
++
++ /* For graphics mode, it is up to the mode-setting driver
++ (currently only video-vesa.c) to store the parameters */
++ if (graphic_mode)
++ return;
++
++ store_cursor_position();
++ store_video_mode();
++
++ if (boot_params.screen_info.orig_video_mode == 0x07) {
++ /* MDA, HGC, or VGA in monochrome mode */
++ video_segment = 0xb000;
++ } else {
++ /* CGA, EGA, VGA and so forth */
++ video_segment = 0xb800;
++ }
++
++ set_fs(0);
++ font_size = rdfs16(0x485); /* Font size, BIOS area */
++ boot_params.screen_info.orig_video_points = font_size;
++
++ x = rdfs16(0x44a);
++ y = (adapter == ADAPTER_CGA) ? 25 : rdfs8(0x484)+1;
++
++ if (force_x)
++ x = force_x;
++ if (force_y)
++ y = force_y;
++
++ boot_params.screen_info.orig_video_cols = x;
++ boot_params.screen_info.orig_video_lines = y;
++}
++
++/* Probe the video drivers and have them generate their mode lists. */
++static void probe_cards(int unsafe)
++{
++ struct card_info *card;
++ static u8 probed[2];
++
++ if (probed[unsafe])
++ return;
++
++ probed[unsafe] = 1;
++
++ for (card = video_cards; card < video_cards_end; card++) {
++ if (card->unsafe == unsafe) {
++ if (card->probe)
++ card->nmodes = card->probe();
++ else
++ card->nmodes = 0;
++ }
++ }
++}
++
++/* Test if a mode is defined */
++int mode_defined(u16 mode)
++{
++ struct card_info *card;
++ struct mode_info *mi;
++ int i;
++
++ for (card = video_cards; card < video_cards_end; card++) {
++ mi = card->modes;
++ for (i = 0; i < card->nmodes; i++, mi++) {
++ if (mi->mode == mode)
++ return 1;
++ }
++ }
++
++ return 0;
++}
++
++/* Set mode (without recalc) */
++static int raw_set_mode(u16 mode)
++{
++ int nmode, i;
++ struct card_info *card;
++ struct mode_info *mi;
++
++ /* Drop the recalc bit if set */
++ mode &= ~VIDEO_RECALC;
++
++ /* Scan for mode based on fixed ID, position, or resolution */
++ nmode = 0;
++ for (card = video_cards; card < video_cards_end; card++) {
++ mi = card->modes;
++ for (i = 0; i < card->nmodes; i++, mi++) {
++ int visible = mi->x || mi->y;
++
++ if ((mode == nmode && visible) ||
++ mode == mi->mode ||
++ mode == (mi->y << 8)+mi->x)
++ return card->set_mode(mi);
++
++ if (visible)
++ nmode++;
++ }
++ }
++
++ /* Nothing found? Is it an "exceptional" (unprobed) mode? */
++ for (card = video_cards; card < video_cards_end; card++) {
++ if (mode >= card->xmode_first &&
++ mode < card->xmode_first+card->xmode_n) {
++ struct mode_info mix;
++ mix.mode = mode;
++ mix.x = mix.y = 0;
++ return card->set_mode(&mix);
++ }
++ }
++
++ /* Otherwise, failure... */
++ return -1;
++}
++
++/*
++ * Recalculate the vertical video cutoff (hack!)
++ */
++static void vga_recalc_vertical(void)
++{
++ unsigned int font_size, rows;
++ u16 crtc;
++ u8 ov;
++
++ set_fs(0);
++ font_size = rdfs8(0x485); /* BIOS: font size (pixels) */
++ rows = force_y ? force_y : rdfs8(0x484)+1; /* Text rows */
++
++ rows *= font_size; /* Visible scan lines */
++ rows--; /* ... minus one */
++
++ crtc = vga_crtc();
++
++ out_idx((u8)rows, crtc, 0x12); /* Lower height register */
++ ov = in_idx(crtc, 0x07); /* Overflow register */
++ ov &= 0xbd;
++ ov |= (rows >> (8-1)) & 0x02;
++ ov |= (rows >> (9-6)) & 0x40;
++ out_idx(ov, crtc, 0x07);
++}
++
++/* Set mode (with recalc if specified) */
++static int set_mode(u16 mode)
++{
++ int rv;
++
++ /* Very special mode numbers... */
++ if (mode == VIDEO_CURRENT_MODE)
++ return 0; /* Nothing to do... */
++ else if (mode == NORMAL_VGA)
++ mode = VIDEO_80x25;
++ else if (mode == EXTENDED_VGA)
++ mode = VIDEO_8POINT;
++
++ rv = raw_set_mode(mode);
++ if (rv)
++ return rv;
++
++ if (mode & VIDEO_RECALC)
++ vga_recalc_vertical();
++
++ return 0;
++}
++
++static unsigned int get_entry(void)
++{
++ char entry_buf[4];
++ int i, len = 0;
++ int key;
++ unsigned int v;
++
++ do {
++ key = getchar();
++
++ if (key == '\b') {
++ if (len > 0) {
++ puts("\b \b");
++ len--;
++ }
++ } else if ((key >= '0' && key <= '9') ||
++ (key >= 'A' && key <= 'Z') ||
++ (key >= 'a' && key <= 'z')) {
++ if (len < sizeof entry_buf) {
++ entry_buf[len++] = key;
++ putchar(key);
++ }
++ }
++ } while (key != '\r');
++ putchar('\n');
++
++ if (len == 0)
++ return VIDEO_CURRENT_MODE; /* Default */
++
++ v = 0;
++ for (i = 0; i < len; i++) {
++ v <<= 4;
++ key = entry_buf[i] | 0x20;
++ v += (key > '9') ? key-'a'+10 : key-'0';
++ }
++
++ return v;
++}
++
++static void display_menu(void)
++{
++ struct card_info *card;
++ struct mode_info *mi;
++ char ch;
++ int i;
++
++ puts("Mode: COLSxROWS:\n");
++
++ ch = '0';
++ for (card = video_cards; card < video_cards_end; card++) {
++ mi = card->modes;
++ for (i = 0; i < card->nmodes; i++, mi++) {
++ int visible = mi->x && mi->y;
++ u16 mode_id = mi->mode ? mi->mode :
++ (mi->y << 8)+mi->x;
++
++ if (!visible)
++ continue; /* Hidden mode */
++
++ printf("%c %04X %3dx%-3d %s\n",
++ ch, mode_id, mi->x, mi->y, card->card_name);
++
++ if (ch == '9')
++ ch = 'a';
++ else if (ch == 'z' || ch == ' ')
++ ch = ' '; /* Out of keys... */
++ else
++ ch++;
++ }
++ }
++}
++
++#define H(x) ((x)-'a'+10)
++#define SCAN ((H('s')<<12)+(H('c')<<8)+(H('a')<<4)+H('n'))
++
++static unsigned int mode_menu(void)
++{
++ int key;
++ unsigned int sel;
++
++ puts("Press <ENTER> to see video modes available, "
++ "<SPACE> to continue, or wait 30 sec\n");
++
++ kbd_flush();
++ while (1) {
++ key = getchar_timeout();
++ if (key == ' ' || key == 0)
++ return VIDEO_CURRENT_MODE; /* Default */
++ if (key == '\r')
++ break;
++ putchar('\a'); /* Beep! */
++ }
++
++
++ for (;;) {
++ display_menu();
++
++ puts("Enter a video mode or \"scan\" to scan for "
++ "additional modes: ");
++ sel = get_entry();
++ if (sel != SCAN)
++ return sel;
++
++ probe_cards(1);
++ }
++}
++
++#ifdef CONFIG_VIDEO_RETAIN
++/* Save screen content to the heap */
++struct saved_screen {
++ int x, y;
++ int curx, cury;
++ u16 *data;
++} saved;
++
++static void save_screen(void)
++{
++ /* Should be called after store_mode_params() */
++ saved.x = boot_params.screen_info.orig_video_cols;
++ saved.y = boot_params.screen_info.orig_video_lines;
++ saved.curx = boot_params.screen_info.orig_x;
++ saved.cury = boot_params.screen_info.orig_y;
++
++ if (heap_free() < saved.x*saved.y*sizeof(u16)+512)
++ return; /* Not enough heap to save the screen */
++
++ saved.data = GET_HEAP(u16, saved.x*saved.y);
++
++ set_fs(video_segment);
++ copy_from_fs(saved.data, 0, saved.x*saved.y*sizeof(u16));
++}
++
++static void restore_screen(void)
++{
++ /* Should be called after store_mode_params() */
++ int xs = boot_params.screen_info.orig_video_cols;
++ int ys = boot_params.screen_info.orig_video_lines;
++ int y;
++ addr_t dst = 0;
++ u16 *src = saved.data;
++ u16 ax, bx, dx;
++
++ if (graphic_mode)
++ return; /* Can't restore onto a graphic mode */
++
++ if (!src)
++ return; /* No saved screen contents */
++
++ /* Restore screen contents */
++
++ set_fs(video_segment);
++ for (y = 0; y < ys; y++) {
++ int npad;
++
++ if (y < saved.y) {
++ int copy = (xs < saved.x) ? xs : saved.x;
++ copy_to_fs(dst, src, copy*sizeof(u16));
++ dst += copy*sizeof(u16);
++ src += saved.x;
++ npad = (xs < saved.x) ? 0 : xs-saved.x;
++ } else {
++ npad = xs;
++ }
++
++ /* Writes "npad" blank characters to
++ video_segment:dst and advances dst */
++ asm volatile("pushw %%es ; "
++ "movw %2,%%es ; "
++ "shrw %%cx ; "
++ "jnc 1f ; "
++ "stosw \n\t"
++ "1: rep;stosl ; "
++ "popw %%es"
++ : "+D" (dst), "+c" (npad)
++ : "bdSm" (video_segment),
++ "a" (0x07200720));
++ }
++
++ /* Restore cursor position */
++ ax = 0x0200; /* Set cursor position */
++ bx = 0; /* Page number (<< 8) */
++ dx = (saved.cury << 8)+saved.curx;
++ asm volatile(INT10
++ : "+a" (ax), "+b" (bx), "+d" (dx)
++ : : "ecx", "esi", "edi");
++}
++#else
++#define save_screen() ((void)0)
++#define restore_screen() ((void)0)
++#endif
++
++void set_video(void)
++{
++ u16 mode = boot_params.hdr.vid_mode;
++
++ RESET_HEAP();
++
++ store_mode_params();
++ save_screen();
++ probe_cards(0);
++
++ for (;;) {
++ if (mode == ASK_VGA)
++ mode = mode_menu();
++
++ if (!set_mode(mode))
++ break;
++
++ printf("Undefined video mode number: %x\n", mode);
++ mode = ASK_VGA;
++ }
++ vesa_store_edid();
++ store_mode_params();
++
++ if (do_restore)
++ restore_screen();
++}
+diff -puN /dev/null arch/i386/boot/video.h
+--- /dev/null
++++ a/arch/i386/boot/video.h
+@@ -0,0 +1,145 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/video.h
++ *
++ * Header file for the real-mode video probing code
++ */
++
++#ifndef BOOT_VIDEO_H
++#define BOOT_VIDEO_H
++
++#include <linux/types.h>
++
++/* Enable autodetection of SVGA adapters and modes. */
++#undef CONFIG_VIDEO_SVGA
++
++/* Enable autodetection of VESA modes */
++#define CONFIG_VIDEO_VESA
++
++/* Retain screen contents when switching modes */
++#define CONFIG_VIDEO_RETAIN
++
++/* Force 400 scan lines for standard modes (hack to fix bad BIOS behaviour */
++#undef CONFIG_VIDEO_400_HACK
++
++/* This code uses an extended set of video mode numbers. These include:
++ * Aliases for standard modes
++ * NORMAL_VGA (-1)
++ * EXTENDED_VGA (-2)
++ * ASK_VGA (-3)
++ * Video modes numbered by menu position -- NOT RECOMMENDED because of lack
++ * of compatibility when extending the table. These are between 0x00 and 0xff.
++ */
++#define VIDEO_FIRST_MENU 0x0000
++
++/* Standard BIOS video modes (BIOS number + 0x0100) */
++#define VIDEO_FIRST_BIOS 0x0100
++
++/* VESA BIOS video modes (VESA number + 0x0200) */
++#define VIDEO_FIRST_VESA 0x0200
++
++/* Video7 special modes (BIOS number + 0x0900) */
++#define VIDEO_FIRST_V7 0x0900
++
++/* Special video modes */
++#define VIDEO_FIRST_SPECIAL 0x0f00
++#define VIDEO_80x25 0x0f00
++#define VIDEO_8POINT 0x0f01
++#define VIDEO_80x43 0x0f02
++#define VIDEO_80x28 0x0f03
++#define VIDEO_CURRENT_MODE 0x0f04
++#define VIDEO_80x30 0x0f05
++#define VIDEO_80x34 0x0f06
++#define VIDEO_80x60 0x0f07
++#define VIDEO_GFX_HACK 0x0f08
++#define VIDEO_LAST_SPECIAL 0x0f09
++
++/* Video modes given by resolution */
++#define VIDEO_FIRST_RESOLUTION 0x1000
++
++/* The "recalculate timings" flag */
++#define VIDEO_RECALC 0x8000
++
++/* Define DO_STORE according to CONFIG_VIDEO_RETAIN */
++#ifdef CONFIG_VIDEO_RETAIN
++void store_screen(void);
++#define DO_STORE() store_screen()
++#else
++#define DO_STORE() ((void)0)
++#endif /* CONFIG_VIDEO_RETAIN */
++
++/*
++ * Mode table structures
++ */
++
++struct mode_info {
++ u16 mode; /* Mode number (vga= style) */
++ u8 x, y; /* Width, height */
++};
++
++struct card_info {
++ const char *card_name;
++ int (*set_mode)(struct mode_info *mode);
++ int (*probe)(void);
++ struct mode_info *modes;
++ int nmodes; /* Number of probed modes so far */
++ int unsafe; /* Probing is unsafe, only do after "scan" */
++ u16 xmode_first; /* Unprobed modes to try to call anyway */
++ u16 xmode_n; /* Size of unprobed mode range */
++};
++
++#define __videocard struct card_info __attribute__((section(".videocards")))
++extern struct card_info video_cards[], video_cards_end[];
++
++int mode_defined(u16 mode); /* video.c */
++
++/* Basic video information */
++#define ADAPTER_CGA 0 /* CGA/MDA/HGC */
++#define ADAPTER_EGA 1
++#define ADAPTER_VGA 2
++
++extern int adapter;
++extern u16 video_segment;
++extern int force_x, force_y; /* Don't query the BIOS for cols/rows */
++extern int do_restore; /* Restore screen contents */
++extern int graphic_mode; /* Graphics mode with linear frame buffer */
++
++/*
++ * int $0x10 is notorious for touching registers it shouldn't.
++ * gcc doesn't like %ebp being clobbered, so define it as a push/pop
++ * sequence here.
++ */
++#define INT10 "pushl %%ebp; int $0x10; popl %%ebp"
++
++/* Accessing VGA indexed registers */
++static inline u8 in_idx(u16 port, u8 index)
++{
++ outb(index, port);
++ return inb(port+1);
++}
++
++static inline void out_idx(u8 v, u16 port, u8 index)
++{
++ outw(index+(v << 8), port);
++}
++
++/* Writes a value to an indexed port and then reads the port again */
++static inline u8 tst_idx(u8 v, u16 port, u8 index)
++{
++ out_idx(port, index, v);
++ return in_idx(port, index);
++}
++
++/* Get the I/O port of the VGA CRTC */
++u16 vga_crtc(void); /* video-vga.c */
++
++#endif /* BOOT_VIDEO_H */
+diff -puN /dev/null arch/i386/boot/voyager.c
+--- /dev/null
++++ a/arch/i386/boot/voyager.c
+@@ -0,0 +1,46 @@
++/* -*- linux-c -*- ------------------------------------------------------- *
++ *
++ * Copyright (C) 1991, 1992 Linus Torvalds
++ * Copyright 2007 rPath, Inc. - All Rights Reserved
++ *
++ * This file is part of the Linux kernel, and is made available under
++ * the terms of the GNU General Public License version 2.
++ *
++ * ----------------------------------------------------------------------- */
++
++/*
++ * arch/i386/boot/voyager.c
++ *
++ * Get the Voyager config information
++ */
++
++#include "boot.h"
++
++#ifdef CONFIG_X86_VOYAGER
++
++int query_voyager(void)
++{
++ u8 err;
++ u16 es, di;
++ /* Abuse the apm_bios_info area for this */
++ u8 *data_ptr = (u8 *)&boot_params.apm_bios_info;
++
++ data_ptr[0] = 0xff; /* Flag on config not found(?) */
++
++ asm("pushw %%es ; "
++ "int $0x15 ; "
++ "setc %0 ; "
++ "movw %%es, %1 ; "
++ "popw %%es"
++ : "=qm" (err), "=rm" (es), "=D" (di)
++ : "a" (0xffc0));
++
++ if (err)
++ return -1; /* Not Voyager */
++
++ set_fs(es);
++ copy_from_fs(data_ptr, di, 7); /* Table is 7 bytes apparently */
++ return 0;
++}
++
++#endif /* CONFIG_X86_VOYAGER */
+diff -puN arch/i386/kernel/cpu/Makefile~git-newsetup arch/i386/kernel/cpu/Makefile
+diff -puN /dev/null arch/i386/kernel/cpu/addon_cpuid_features.c
+--- /dev/null
++++ a/arch/i386/kernel/cpu/addon_cpuid_features.c
+@@ -0,0 +1,50 @@
++
++/*
++ * Routines to indentify additional cpu features that are scattered in
++ * cpuid space.
++ */
++
++#include <linux/cpu.h>
++
++#include <asm/processor.h>
++
++struct cpuid_bit {
++ u16 feature;
++ u8 reg;
++ u8 bit;
++ u32 level;
++};
++
++enum cpuid_regs {
++ CR_EAX = 0,
++ CR_ECX,
++ CR_EDX,
++ CR_EBX
++};
++
++void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
++{
++ u32 max_level;
++ u32 regs[4];
++ const struct cpuid_bit *cb;
++
++ static const struct cpuid_bit cpuid_bits[] = {
++ { X86_FEATURE_IDA, CR_EAX, 1, 0x00000006 },
++ { 0, 0, 0, 0 }
++ };
++
++ for (cb = cpuid_bits; cb->feature; cb++) {
++
++ /* Verify that the level is valid */
++ max_level = cpuid_eax(cb->level & 0xffff0000);
++ if (max_level < cb->level ||
++ max_level > (cb->level | 0xffff))
++ continue;
++
++ cpuid(cb->level, ®s[CR_EAX], ®s[CR_EBX],
++ ®s[CR_ECX], ®s[CR_EDX]);
++
++ if (regs[cb->reg] & (1 << cb->bit))
++ set_bit(cb->feature, c->x86_capability);
++ }
++}
+diff -puN arch/i386/kernel/cpu/common.c~git-newsetup arch/i386/kernel/cpu/common.c
+--- a/arch/i386/kernel/cpu/common.c~git-newsetup
++++ a/arch/i386/kernel/cpu/common.c
+@@ -353,6 +353,8 @@ static void __cpuinit generic_identify(s
+ if ( xlvl >= 0x80000004 )
+ get_model_name(c); /* Default name */
+ }
++
++ init_scattered_cpuid_features(c);
+ }
+
+ early_intel_workaround(c);
+diff -puN arch/i386/kernel/cpu/proc.c~git-newsetup arch/i386/kernel/cpu/proc.c
+--- a/arch/i386/kernel/cpu/proc.c~git-newsetup
++++ a/arch/i386/kernel/cpu/proc.c
+@@ -29,7 +29,8 @@ static int show_cpuinfo(struct seq_file
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, "mp", "nx", NULL, "mmxext", NULL,
+- NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm", "3dnowext", "3dnow",
++ NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm",
++ "3dnowext", "3dnow",
+
+ /* Transmeta-defined */
+ "recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
+@@ -40,8 +41,9 @@ static int show_cpuinfo(struct seq_file
+ /* Other (Linux-defined) */
+ "cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
+ NULL, NULL, NULL, NULL,
+- "constant_tsc", "up", NULL, NULL, NULL, NULL, NULL, NULL,
+- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
++ "constant_tsc", "up", NULL, "arch_perfmon",
++ "pebs", "bts", NULL, "sync_rdtsc",
++ "rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+
+ /* Intel-defined (#2) */
+@@ -57,9 +59,16 @@ static int show_cpuinfo(struct seq_file
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+
+ /* AMD-defined (#2) */
+- "lahf_lm", "cmp_legacy", "svm", "extapic", "cr8legacy", "abm",
+- "sse4a", "misalignsse",
+- "3dnowprefetch", "osvw", "ibs", NULL, NULL, NULL, NULL, NULL,
++ "lahf_lm", "cmp_legacy", "svm", "extapic", "cr8_legacy",
++ "altmovcr8", "abm", "sse4a",
++ "misalignsse", "3dnowprefetch",
++ "osvw", "ibs", NULL, NULL, NULL, NULL,
++ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
++ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
++
++ /* Auxiliary (Linux-defined) */
++ "ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
++ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ };
+diff -puN arch/i386/kernel/e820.c~git-newsetup arch/i386/kernel/e820.c
+--- a/arch/i386/kernel/e820.c~git-newsetup
++++ a/arch/i386/kernel/e820.c
+@@ -766,7 +766,7 @@ void __init print_memory_map(char *who)
+ case E820_NVS:
+ printk("(ACPI NVS)\n");
+ break;
+- default: printk("type %lu\n", e820.map[i].type);
++ default: printk("type %u\n", e820.map[i].type);
+ break;
+ }
+ }
+diff -puN arch/i386/kernel/setup.c~git-newsetup arch/i386/kernel/setup.c
+--- a/arch/i386/kernel/setup.c~git-newsetup
++++ a/arch/i386/kernel/setup.c
+@@ -102,19 +102,10 @@ static unsigned int highmem_pages = -1;
+ /*
+ * Setup options
+ */
+-struct drive_info_struct { char dummy[32]; } drive_info;
+-#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) || \
+- defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE)
+-EXPORT_SYMBOL(drive_info);
+-#endif
+ struct screen_info screen_info;
+ EXPORT_SYMBOL(screen_info);
+ struct apm_info apm_info;
+ EXPORT_SYMBOL(apm_info);
+-struct sys_desc_table_struct {
+- unsigned short length;
+- unsigned char table[0];
+-};
+ struct edid_info edid_info;
+ EXPORT_SYMBOL_GPL(edid_info);
+ struct ist_info ist_info;
+@@ -134,7 +125,7 @@ unsigned long saved_videomode;
+
+ static char __initdata command_line[COMMAND_LINE_SIZE];
+
+-unsigned char __initdata boot_params[PARAM_SIZE];
++struct boot_params __initdata boot_params;
+
+ #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
+ struct edd edd;
+@@ -528,7 +519,6 @@ void __init setup_arch(char **cmdline_p)
+ #endif
+
+ ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
+- drive_info = DRIVE_INFO;
+ screen_info = SCREEN_INFO;
+ edid_info = EDID_INFO;
+ apm_info.bios = APM_BIOS_INFO;
+diff -puN arch/i386/kernel/verify_cpu.S~git-newsetup /dev/null
+--- a/arch/i386/kernel/verify_cpu.S
++++ /dev/null
+@@ -1,94 +0,0 @@
+-/* Check if CPU has some minimum CPUID bits
+- This runs in 16bit mode so that the caller can still use the BIOS
+- to output errors on the screen */
+-#include <asm/cpufeature.h>
+-#include <asm/msr.h>
+-
+-verify_cpu:
+- pushfl # Save caller passed flags
+- pushl $0 # Kill any dangerous flags
+- popfl
+-
+-#if CONFIG_X86_MINIMUM_CPU_MODEL >= 4
+- pushfl
+- pop %eax
+- orl $(1<<18),%eax # try setting AC
+- push %eax
+- popfl
+- pushfl
+- popl %eax
+- testl $(1<<18),%eax
+- jz bad
+-#endif
+-#if REQUIRED_MASK1 != 0
+- pushfl # standard way to check for cpuid
+- popl %eax
+- movl %eax,%ebx
+- xorl $0x200000,%eax
+- pushl %eax
+- popfl
+- pushfl
+- popl %eax
+- cmpl %eax,%ebx
+- pushfl # standard way to check for cpuid
+- popl %eax
+- movl %eax,%ebx
+- xorl $0x200000,%eax
+- pushl %eax
+- popfl
+- pushfl
+- popl %eax
+- cmpl %eax,%ebx
+- jz bad # REQUIRED_MASK1 != 0 requires CPUID
+-
+- movl $0x0,%eax # See if cpuid 1 is implemented
+- cpuid
+- cmpl $0x1,%eax
+- jb bad # no cpuid 1
+-
+-#if REQUIRED_MASK1 & NEED_CMPXCHG64
+- /* Some VIA C3s need magic MSRs to enable CX64. Do this here */
+- cmpl $0x746e6543,%ebx # Cent
+- jne 1f
+- cmpl $0x48727561,%edx # aurH
+- jne 1f
+- cmpl $0x736c7561,%ecx # auls
+- jne 1f
+- movl $1,%eax # check model
+- cpuid
+- movl %eax,%ebx
+- shr $8,%ebx
+- andl $0xf,%ebx
+- cmp $6,%ebx # check family == 6
+- jne 1f
+- shr $4,%eax
+- andl $0xf,%eax
+- cmpl $6,%eax # check model >= 6
+- jb 1f
+- # assume models >= 6 all support this MSR
+- movl $MSR_VIA_FCR,%ecx
+- rdmsr
+- orl $((1<<1)|(1<<7)),%eax # enable CMPXCHG64 and PGE
+- wrmsr
+-1:
+-#endif
+- movl $0x1,%eax # Does the cpu have what it takes
+- cpuid
+-
+-#if CONFIG_X86_MINIMUM_CPU_MODEL > 4
+-#error add proper model checking here
+-#endif
+-
+- andl $REQUIRED_MASK1,%edx
+- xorl $REQUIRED_MASK1,%edx
+- jnz bad
+-#endif /* REQUIRED_MASK1 */
+-
+- popfl
+- xor %eax,%eax
+- ret
+-
+-bad:
+- popfl
+- movl $1,%eax
+- ret
+diff -puN arch/x86_64/Kconfig~git-newsetup arch/x86_64/Kconfig
+--- a/arch/x86_64/Kconfig~git-newsetup
++++ a/arch/x86_64/Kconfig
+@@ -453,6 +453,10 @@ config NR_CPUS
+ This is purely to save memory - each supported CPU requires
+ memory in the static kernel configuration.
+
++config PHYSICAL_ALIGN
++ hex
++ default "0x200000"
++
+ config HOTPLUG_CPU
+ bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)"
+ depends on SMP && HOTPLUG && EXPERIMENTAL
+diff -puN arch/x86_64/boot/Makefile~git-newsetup arch/x86_64/boot/Makefile
+--- a/arch/x86_64/boot/Makefile~git-newsetup
++++ a/arch/x86_64/boot/Makefile
+@@ -1,135 +1,9 @@
+ #
+ # arch/x86_64/boot/Makefile
+ #
+-# This file is subject to the terms and conditions of the GNU General Public
+-# License. See the file "COPYING" in the main directory of this archive
+-# for more details.
+-#
+-# Copyright (C) 1994 by Linus Torvalds
+-#
+-
+-# ROOT_DEV specifies the default root-device when making the image.
+-# This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
+-# the default of FLOPPY is used by 'build'.
+-
+-ROOT_DEV := CURRENT
+-
+-# If you want to preset the SVGA mode, uncomment the next line and
+-# set SVGA_MODE to whatever number you want.
+-# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
+-# The number is the same as you would ordinarily press at bootup.
+-
+-SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
+-
+-# If you want the RAM disk device, define this to be the size in blocks.
+-
+-#RAMDISK := -DRAMDISK=512
+-
+-targets := vmlinux.bin bootsect bootsect.o \
+- setup setup.o bzImage mtools.conf
+-
+-EXTRA_CFLAGS := -m32
+-
+-hostprogs-y := tools/build
+-HOST_EXTRACFLAGS += $(LINUXINCLUDE)
+-subdir- := compressed/ #Let make clean descend in compressed/
+-# ---------------------------------------------------------------------------
+-
+-$(obj)/bzImage: IMAGE_OFFSET := 0x100000
+-$(obj)/bzImage: EXTRA_AFLAGS := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__
+-$(obj)/bzImage: BUILDFLAGS := -b
+-
+-quiet_cmd_image = BUILD $@
+-cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/bootsect $(obj)/setup \
+- $(obj)/vmlinux.bin $(ROOT_DEV) > $@
+-
+-$(obj)/bzImage: $(obj)/bootsect $(obj)/setup \
+- $(obj)/vmlinux.bin $(obj)/tools/build FORCE
+- $(call if_changed,image)
+- @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
+-
+-$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
+- $(call if_changed,objcopy)
+-
+-LDFLAGS_bootsect := -Ttext 0x0 -s --oformat binary
+-LDFLAGS_setup := -Ttext 0x0 -s --oformat binary -e begtext
+-
+-$(obj)/setup $(obj)/bootsect: %: %.o FORCE
+- $(call if_changed,ld)
+-
+-$(obj)/compressed/vmlinux: FORCE
+- $(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
+-
+-# Set this if you want to pass append arguments to the zdisk/fdimage/isoimage kernel
+-FDARGS =
+-# Set this if you want an initrd included with the zdisk/fdimage/isoimage kernel
+-FDINITRD =
+-
+-image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
+-
+-$(obj)/mtools.conf: $(src)/mtools.conf.in
+- sed -e 's|@OBJ@|$(obj)|g' < $< > $@
+-
+-# This requires write access to /dev/fd0
+-zdisk: $(BOOTIMAGE) $(obj)/mtools.conf
+- MTOOLSRC=$(obj)/mtools.conf mformat a: ; sync
+- syslinux /dev/fd0 ; sync
+- echo '$(image_cmdline)' | \
+- MTOOLSRC=$(obj)/mtools.conf mcopy - a:syslinux.cfg
+- if [ -f '$(FDINITRD)' ] ; then \
+- MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
+- fi
+- MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) a:linux ; sync
+-
+-# These require being root or having syslinux 2.02 or higher installed
+-fdimage fdimage144: $(BOOTIMAGE) $(obj)/mtools.conf
+- dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
+- MTOOLSRC=$(obj)/mtools.conf mformat v: ; sync
+- syslinux $(obj)/fdimage ; sync
+- echo '$(image_cmdline)' | \
+- MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
+- if [ -f '$(FDINITRD)' ] ; then \
+- MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
+- fi
+- MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) v:linux ; sync
+-
+-fdimage288: $(BOOTIMAGE) $(obj)/mtools.conf
+- dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
+- MTOOLSRC=$(obj)/mtools.conf mformat w: ; sync
+- syslinux $(obj)/fdimage ; sync
+- echo '$(image_cmdline)' | \
+- MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
+- if [ -f '$(FDINITRD)' ] ; then \
+- MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
+- fi
+- MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) w:linux ; sync
+-
+-isoimage: $(BOOTIMAGE)
+- -rm -rf $(obj)/isoimage
+- mkdir $(obj)/isoimage
+- for i in lib lib64 share end ; do \
+- if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
+- cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
+- break ; \
+- fi ; \
+- if [ $$i = end ] ; then exit 1 ; fi ; \
+- done
+- cp $(BOOTIMAGE) $(obj)/isoimage/linux
+- echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
+- if [ -f '$(FDINITRD)' ] ; then \
+- cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
+- fi
+- mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
+- -no-emul-boot -boot-load-size 4 -boot-info-table \
+- $(obj)/isoimage
+- rm -rf $(obj)/isoimage
+-
+-zlilo: $(BOOTIMAGE)
+- if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
+- if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
+- cat $(BOOTIMAGE) > $(INSTALL_PATH)/vmlinuz
+- cp System.map $(INSTALL_PATH)/
+- if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
++# The actual boot code is shared with i386 including the Makefile.
++# So tell kbuild that we fetch the code from i386 and include the
++# Makefile from i386 too.
+
+-install:
+- sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"
++src := arch/i386/boot
++include $(src)/Makefile
+diff -puN arch/x86_64/boot/bootsect.S~git-newsetup /dev/null
+--- a/arch/x86_64/boot/bootsect.S
++++ /dev/null
+@@ -1,98 +0,0 @@
+-/*
+- * bootsect.S Copyright (C) 1991, 1992 Linus Torvalds
+- *
+- * modified by Drew Eckhardt
+- * modified by Bruce Evans (bde)
+- * modified by Chris Noe (May 1999) (as86 -> gas)
+- * gutted by H. Peter Anvin (Jan 2003)
+- *
+- * BIG FAT NOTE: We're in real mode using 64k segments. Therefore segment
+- * addresses must be multiplied by 16 to obtain their respective linear
+- * addresses. To avoid confusion, linear addresses are written using leading
+- * hex while segment addresses are written as segment:offset.
+- *
+- */
+-
+-#include <asm/boot.h>
+-
+-SETUPSECTS = 4 /* default nr of setup-sectors */
+-BOOTSEG = 0x07C0 /* original address of boot-sector */
+-INITSEG = DEF_INITSEG /* we move boot here - out of the way */
+-SETUPSEG = DEF_SETUPSEG /* setup starts here */
+-SYSSEG = DEF_SYSSEG /* system loaded at 0x10000 (65536) */
+-SYSSIZE = DEF_SYSSIZE /* system size: # of 16-byte clicks */
+- /* to be loaded */
+-ROOT_DEV = 0 /* ROOT_DEV is now written by "build" */
+-SWAP_DEV = 0 /* SWAP_DEV is now written by "build" */
+-
+-#ifndef SVGA_MODE
+-#define SVGA_MODE ASK_VGA
+-#endif
+-
+-#ifndef RAMDISK
+-#define RAMDISK 0
+-#endif
+-
+-#ifndef ROOT_RDONLY
+-#define ROOT_RDONLY 1
+-#endif
+-
+-.code16
+-.text
+-
+-.global _start
+-_start:
+-
+- # Normalize the start address
+- jmpl $BOOTSEG, $start2
+-
+-start2:
+- movw %cs, %ax
+- movw %ax, %ds
+- movw %ax, %es
+- movw %ax, %ss
+- movw $0x7c00, %sp
+- sti
+- cld
+-
+- movw $bugger_off_msg, %si
+-
+-msg_loop:
+- lodsb
+- andb %al, %al
+- jz die
+- movb $0xe, %ah
+- movw $7, %bx
+- int $0x10
+- jmp msg_loop
+-
+-die:
+- # Allow the user to press a key, then reboot
+- xorw %ax, %ax
+- int $0x16
+- int $0x19
+-
+- # int 0x19 should never return. In case it does anyway,
+- # invoke the BIOS reset code...
+- ljmp $0xf000,$0xfff0
+-
+-
+-bugger_off_msg:
+- .ascii "Direct booting from floppy is no longer supported.\r\n"
+- .ascii "Please use a boot loader program instead.\r\n"
+- .ascii "\n"
+- .ascii "Remove disk and press any key to reboot . . .\r\n"
+- .byte 0
+-
+-
+- # Kernel attributes; used by setup
+-
+- .org 497
+-setup_sects: .byte SETUPSECTS
+-root_flags: .word ROOT_RDONLY
+-syssize: .word SYSSIZE
+-swap_dev: .word SWAP_DEV
+-ram_size: .word RAMDISK
+-vid_mode: .word SVGA_MODE
+-root_dev: .word ROOT_DEV
+-boot_flag: .word 0xAA55
+diff -puN arch/x86_64/boot/compressed/Makefile~git-newsetup arch/x86_64/boot/compressed/Makefile
+--- a/arch/x86_64/boot/compressed/Makefile~git-newsetup
++++ a/arch/x86_64/boot/compressed/Makefile
+@@ -7,11 +7,12 @@
+ #
+
+ targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o
+-EXTRA_AFLAGS := -traditional
+
+-# cannot use EXTRA_CFLAGS because base CFLAGS contains -mkernel which conflicts with
+-# -m32
+-CFLAGS := -m64 -D__KERNEL__ -Iinclude -O2 -fno-strict-aliasing -fPIC -mcmodel=small -fno-builtin
++CFLAGS := -m64 -D__KERNEL__ $(LINUXINCLUDE) -O2 \
++ -fno-strict-aliasing -fPIC -mcmodel=small \
++ $(call cc-option, -ffreestanding) \
++ $(call cc-option, -fno-stack-protector)
++AFLAGS := $(CFLAGS) -D__ASSEMBLY__
+ LDFLAGS := -m elf_x86_64
+
+ LDFLAGS_vmlinux := -T
+diff -puN arch/x86_64/boot/compressed/head.S~git-newsetup arch/x86_64/boot/compressed/head.S
+--- a/arch/x86_64/boot/compressed/head.S~git-newsetup
++++ a/arch/x86_64/boot/compressed/head.S
+@@ -46,10 +46,10 @@ startup_32:
+ * at and where we were actually loaded at. This can only be done
+ * with a short local call on x86. Nothing else will tell us what
+ * address we are running at. The reserved chunk of the real-mode
+- * data at 0x34-0x3f are used as the stack for this calculation.
+- * Only 4 bytes are needed.
++ * data at 0x1e4 (defined as a scratch field) are used as the stack
++ * for this calculation. Only 4 bytes are needed.
+ */
+- leal 0x40(%esi), %esp
++ leal (0x1e4+4)(%esi), %esp
+ call 1f
+ 1: popl %ebp
+ subl $1b, %ebp
+diff -puN arch/x86_64/boot/install.sh~git-newsetup /dev/null
+--- a/arch/x86_64/boot/install.sh
++++ /dev/null
+@@ -1,2 +0,0 @@
+-#!/bin/sh
+-. $srctree/arch/i386/boot/install.sh
+diff -puN arch/x86_64/boot/mtools.conf.in~git-newsetup /dev/null
+--- a/arch/x86_64/boot/mtools.conf.in
++++ /dev/null
+@@ -1,17 +0,0 @@
+-#
+-# mtools configuration file for "make (b)zdisk"
+-#
+-
+-# Actual floppy drive
+-drive a:
+- file="/dev/fd0"
+-
+-# 1.44 MB floppy disk image
+-drive v:
+- file="@OBJ@/fdimage" cylinders=80 heads=2 sectors=18 filter
+-
+-# 2.88 MB floppy disk image (mostly for virtual uses)
+-drive w:
+- file="@OBJ@/fdimage" cylinders=80 heads=2 sectors=36 filter
+-
+-
+diff -puN arch/x86_64/boot/setup.S~git-newsetup /dev/null
+--- a/arch/x86_64/boot/setup.S
++++ /dev/null
+@@ -1,826 +0,0 @@
+-/*
+- * setup.S Copyright (C) 1991, 1992 Linus Torvalds
+- *
+- * setup.s is responsible for getting the system data from the BIOS,
+- * and putting them into the appropriate places in system memory.
+- * both setup.s and system has been loaded by the bootblock.
+- *
+- * This code asks the bios for memory/disk/other parameters, and
+- * puts them in a "safe" place: 0x90000-0x901FF, ie where the
+- * boot-block used to be. It is then up to the protected mode
+- * system to read them from there before the area is overwritten
+- * for buffer-blocks.
+- *
+- * Move PS/2 aux init code to psaux.c
+- * (troyer@saifr00.cfsat.Honeywell.COM) 03Oct92
+- *
+- * some changes and additional features by Christoph Niemann,
+- * March 1993/June 1994 (Christoph.Niemann@linux.org)
+- *
+- * add APM BIOS checking by Stephen Rothwell, May 1994
+- * (sfr@canb.auug.org.au)
+- *
+- * High load stuff, initrd support and position independency
+- * by Hans Lermen & Werner Almesberger, February 1996
+- * <lermen@elserv.ffm.fgan.de>, <almesber@lrc.epfl.ch>
+- *
+- * Video handling moved to video.S by Martin Mares, March 1996
+- * <mj@k332.feld.cvut.cz>
+- *
+- * Extended memory detection scheme retwiddled by orc@pell.chi.il.us (david
+- * parsons) to avoid loadlin confusion, July 1997
+- *
+- * Transcribed from Intel (as86) -> AT&T (gas) by Chris Noe, May 1999.
+- * <stiker@northlink.com>
+- *
+- * Fix to work around buggy BIOSes which don't use carry bit correctly
+- * and/or report extended memory in CX/DX for e801h memory size detection
+- * call. As a result the kernel got wrong figures. The int15/e801h docs
+- * from Ralf Brown interrupt list seem to indicate AX/BX should be used
+- * anyway. So to avoid breaking many machines (presumably there was a reason
+- * to orginally use CX/DX instead of AX/BX), we do a kludge to see
+- * if CX/DX have been changed in the e801 call and if so use AX/BX .
+- * Michael Miller, April 2001 <michaelm@mjmm.org>
+- *
+- * Added long mode checking and SSE force. March 2003, Andi Kleen.
+- */
+-
+-#include <asm/segment.h>
+-#include <linux/utsrelease.h>
+-#include <linux/compile.h>
+-#include <asm/boot.h>
+-#include <asm/e820.h>
+-#include <asm/page.h>
+-#include <asm/setup.h>
+-
+-/* Signature words to ensure LILO loaded us right */
+-#define SIG1 0xAA55
+-#define SIG2 0x5A5A
+-
+-INITSEG = DEF_INITSEG # 0x9000, we move boot here, out of the way
+-SYSSEG = DEF_SYSSEG # 0x1000, system loaded at 0x10000 (65536).
+-SETUPSEG = DEF_SETUPSEG # 0x9020, this is the current segment
+- # ... and the former contents of CS
+-
+-DELTA_INITSEG = SETUPSEG - INITSEG # 0x0020
+-
+-.code16
+-.globl begtext, begdata, begbss, endtext, enddata, endbss
+-
+-.text
+-begtext:
+-.data
+-begdata:
+-.bss
+-begbss:
+-.text
+-
+-start:
+- jmp trampoline
+-
+-# This is the setup header, and it must start at %cs:2 (old 0x9020:2)
+-
+- .ascii "HdrS" # header signature
+- .word 0x0206 # header version number (>= 0x0105)
+- # or else old loadlin-1.5 will fail)
+-realmode_swtch: .word 0, 0 # default_switch, SETUPSEG
+-start_sys_seg: .word SYSSEG
+- .word kernel_version # pointing to kernel version string
+- # above section of header is compatible
+- # with loadlin-1.5 (header v1.5). Don't
+- # change it.
+-
+-type_of_loader: .byte 0 # = 0, old one (LILO, Loadlin,
+- # Bootlin, SYSLX, bootsect...)
+- # See Documentation/i386/boot.txt for
+- # assigned ids
+-
+-# flags, unused bits must be zero (RFU) bit within loadflags
+-loadflags:
+-LOADED_HIGH = 1 # If set, the kernel is loaded high
+-CAN_USE_HEAP = 0x80 # If set, the loader also has set
+- # heap_end_ptr to tell how much
+- # space behind setup.S can be used for
+- # heap purposes.
+- # Only the loader knows what is free
+-#ifndef __BIG_KERNEL__
+- .byte 0
+-#else
+- .byte LOADED_HIGH
+-#endif
+-
+-setup_move_size: .word 0x8000 # size to move, when setup is not
+- # loaded at 0x90000. We will move setup
+- # to 0x90000 then just before jumping
+- # into the kernel. However, only the
+- # loader knows how much data behind
+- # us also needs to be loaded.
+-
+-code32_start: # here loaders can put a different
+- # start address for 32-bit code.
+-#ifndef __BIG_KERNEL__
+- .long 0x1000 # 0x1000 = default for zImage
+-#else
+- .long 0x100000 # 0x100000 = default for big kernel
+-#endif
+-
+-ramdisk_image: .long 0 # address of loaded ramdisk image
+- # Here the loader puts the 32-bit
+- # address where it loaded the image.
+- # This only will be read by the kernel.
+-
+-ramdisk_size: .long 0 # its size in bytes
+-
+-bootsect_kludge:
+- .long 0 # obsolete
+-
+-heap_end_ptr: .word modelist+1024 # (Header version 0x0201 or later)
+- # space from here (exclusive) down to
+- # end of setup code can be used by setup
+- # for local heap purposes.
+-
+-pad1: .word 0
+-cmd_line_ptr: .long 0 # (Header version 0x0202 or later)
+- # If nonzero, a 32-bit pointer
+- # to the kernel command line.
+- # The command line should be
+- # located between the start of
+- # setup and the end of low
+- # memory (0xa0000), or it may
+- # get overwritten before it
+- # gets read. If this field is
+- # used, there is no longer
+- # anything magical about the
+- # 0x90000 segment; the setup
+- # can be located anywhere in
+- # low memory 0x10000 or higher.
+-
+-ramdisk_max: .long 0xffffffff
+-kernel_alignment: .long 0x200000 # physical addr alignment required for
+- # protected mode relocatable kernel
+-#ifdef CONFIG_RELOCATABLE
+-relocatable_kernel: .byte 1
+-#else
+-relocatable_kernel: .byte 0
+-#endif
+-pad2: .byte 0
+-pad3: .word 0
+-
+-cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line,
+- #added with boot protocol
+- #version 2.06
+-
+-trampoline: call start_of_setup
+- .align 16
+- # The offset at this point is 0x240
+- .space (0xeff-0x240+1) # E820 & EDD space (ending at 0xeff)
+-# End of setup header #####################################################
+-
+-start_of_setup:
+-# Bootlin depends on this being done early
+- movw $0x01500, %ax
+- movb $0x81, %dl
+- int $0x13
+-
+-#ifdef SAFE_RESET_DISK_CONTROLLER
+-# Reset the disk controller.
+- movw $0x0000, %ax
+- movb $0x80, %dl
+- int $0x13
+-#endif
+-
+-# Set %ds = %cs, we know that SETUPSEG = %cs at this point
+- movw %cs, %ax # aka SETUPSEG
+- movw %ax, %ds
+-# Check signature at end of setup
+- cmpw $SIG1, setup_sig1
+- jne bad_sig
+-
+- cmpw $SIG2, setup_sig2
+- jne bad_sig
+-
+- jmp good_sig1
+-
+-# Routine to print asciiz string at ds:si
+-prtstr:
+- lodsb
+- andb %al, %al
+- jz fin
+-
+- call prtchr
+- jmp prtstr
+-
+-fin: ret
+-
+-# Space printing
+-prtsp2: call prtspc # Print double space
+-prtspc: movb $0x20, %al # Print single space (note: fall-thru)
+-
+-prtchr:
+- pushw %ax
+- pushw %cx
+- movw $0007,%bx
+- movw $0x01, %cx
+- movb $0x0e, %ah
+- int $0x10
+- popw %cx
+- popw %ax
+- ret
+-
+-beep: movb $0x07, %al
+- jmp prtchr
+-
+-no_sig_mess: .string "No setup signature found ..."
+-
+-good_sig1:
+- jmp good_sig
+-
+-# We now have to find the rest of the setup code/data
+-bad_sig:
+- movw %cs, %ax # SETUPSEG
+- subw $DELTA_INITSEG, %ax # INITSEG
+- movw %ax, %ds
+- xorb %bh, %bh
+- movb (497), %bl # get setup sect from bootsect
+- subw $4, %bx # LILO loads 4 sectors of setup
+- shlw $8, %bx # convert to words (1sect=2^8 words)
+- movw %bx, %cx
+- shrw $3, %bx # convert to segment
+- addw $SYSSEG, %bx
+- movw %bx, %cs:start_sys_seg
+-# Move rest of setup code/data to here
+- movw $2048, %di # four sectors loaded by LILO
+- subw %si, %si
+- movw %cs, %ax # aka SETUPSEG
+- movw %ax, %es
+- movw $SYSSEG, %ax
+- movw %ax, %ds
+- rep
+- movsw
+- movw %cs, %ax # aka SETUPSEG
+- movw %ax, %ds
+- cmpw $SIG1, setup_sig1
+- jne no_sig
+-
+- cmpw $SIG2, setup_sig2
+- jne no_sig
+-
+- jmp good_sig
+-
+-no_sig:
+- lea no_sig_mess, %si
+- call prtstr
+-
+-no_sig_loop:
+- jmp no_sig_loop
+-
+-good_sig:
+- movw %cs, %ax # aka SETUPSEG
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- movw %ax, %ds
+-# Check if an old loader tries to load a big-kernel
+- testb $LOADED_HIGH, %cs:loadflags # Do we have a big kernel?
+- jz loader_ok # No, no danger for old loaders.
+-
+- cmpb $0, %cs:type_of_loader # Do we have a loader that
+- # can deal with us?
+- jnz loader_ok # Yes, continue.
+-
+- pushw %cs # No, we have an old loader,
+- popw %ds # die.
+- lea loader_panic_mess, %si
+- call prtstr
+-
+- jmp no_sig_loop
+-
+-loader_panic_mess: .string "Wrong loader, giving up..."
+-
+-loader_ok:
+- /* check for long mode. */
+- /* we have to do this before the VESA setup, otherwise the user
+- can't see the error message. */
+-
+- pushw %ds
+- movw %cs,%ax
+- movw %ax,%ds
+-
+- call verify_cpu
+- testl %eax,%eax
+- jz sse_ok
+-
+-no_longmode:
+- call beep
+- lea long_mode_panic,%si
+- call prtstr
+-no_longmode_loop:
+- jmp no_longmode_loop
+-long_mode_panic:
+- .string "Your CPU does not support long mode. Use a 32bit distribution."
+- .byte 0
+-
+-#include "../kernel/verify_cpu.S"
+-sse_ok:
+- popw %ds
+-
+-# tell BIOS we want to go to long mode
+- movl $0xec00,%eax # declare target operating mode
+- movl $2,%ebx # long mode
+- int $0x15
+-
+-# Get memory size (extended mem, kB)
+-
+- xorl %eax, %eax
+- movl %eax, (0x1e0)
+-#ifndef STANDARD_MEMORY_BIOS_CALL
+- movb %al, (E820NR)
+-# Try three different memory detection schemes. First, try
+-# e820h, which lets us assemble a memory map, then try e801h,
+-# which returns a 32-bit memory size, and finally 88h, which
+-# returns 0-64m
+-
+-# method E820H:
+-# the memory map from hell. e820h returns memory classified into
+-# a whole bunch of different types, and allows memory holes and
+-# everything. We scan through this memory map and build a list
+-# of the first 32 memory areas, which we return at [E820MAP].
+-# This is documented at http://www.acpi.info/, in the ACPI 2.0 specification.
+-
+-#define SMAP 0x534d4150
+-
+-meme820:
+- xorl %ebx, %ebx # continuation counter
+- movw $E820MAP, %di # point into the whitelist
+- # so we can have the bios
+- # directly write into it.
+-
+-jmpe820:
+- movl $0x0000e820, %eax # e820, upper word zeroed
+- movl $SMAP, %edx # ascii 'SMAP'
+- movl $20, %ecx # size of the e820rec
+- pushw %ds # data record.
+- popw %es
+- int $0x15 # make the call
+- jc bail820 # fall to e801 if it fails
+-
+- cmpl $SMAP, %eax # check the return is `SMAP'
+- jne bail820 # fall to e801 if it fails
+-
+-# cmpl $1, 16(%di) # is this usable memory?
+-# jne again820
+-
+- # If this is usable memory, we save it by simply advancing %di by
+- # sizeof(e820rec).
+- #
+-good820:
+- movb (E820NR), %al # up to 128 entries
+- cmpb $E820MAX, %al
+- jae bail820
+-
+- incb (E820NR)
+- movw %di, %ax
+- addw $20, %ax
+- movw %ax, %di
+-again820:
+- cmpl $0, %ebx # check to see if
+- jne jmpe820 # %ebx is set to EOF
+-bail820:
+-
+-
+-# method E801H:
+-# memory size is in 1k chunksizes, to avoid confusing loadlin.
+-# we store the 0xe801 memory size in a completely different place,
+-# because it will most likely be longer than 16 bits.
+-# (use 1e0 because that's what Larry Augustine uses in his
+-# alternative new memory detection scheme, and it's sensible
+-# to write everything into the same place.)
+-
+-meme801:
+- stc # fix to work around buggy
+- xorw %cx,%cx # BIOSes which don't clear/set
+- xorw %dx,%dx # carry on pass/error of
+- # e801h memory size call
+- # or merely pass cx,dx though
+- # without changing them.
+- movw $0xe801, %ax
+- int $0x15
+- jc mem88
+-
+- cmpw $0x0, %cx # Kludge to handle BIOSes
+- jne e801usecxdx # which report their extended
+- cmpw $0x0, %dx # memory in AX/BX rather than
+- jne e801usecxdx # CX/DX. The spec I have read
+- movw %ax, %cx # seems to indicate AX/BX
+- movw %bx, %dx # are more reasonable anyway...
+-
+-e801usecxdx:
+- andl $0xffff, %edx # clear sign extend
+- shll $6, %edx # and go from 64k to 1k chunks
+- movl %edx, (0x1e0) # store extended memory size
+- andl $0xffff, %ecx # clear sign extend
+- addl %ecx, (0x1e0) # and add lower memory into
+- # total size.
+-
+-# Ye Olde Traditional Methode. Returns the memory size (up to 16mb or
+-# 64mb, depending on the bios) in ax.
+-mem88:
+-
+-#endif
+- movb $0x88, %ah
+- int $0x15
+- movw %ax, (2)
+-
+-# Set the keyboard repeat rate to the max
+- movw $0x0305, %ax
+- xorw %bx, %bx
+- int $0x16
+-
+-# Check for video adapter and its parameters and allow the
+-# user to browse video modes.
+- call video # NOTE: we need %ds pointing
+- # to bootsector
+-
+-# Get hd0 data...
+- xorw %ax, %ax
+- movw %ax, %ds
+- ldsw (4 * 0x41), %si
+- movw %cs, %ax # aka SETUPSEG
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- pushw %ax
+- movw %ax, %es
+- movw $0x0080, %di
+- movw $0x10, %cx
+- pushw %cx
+- cld
+- rep
+- movsb
+-# Get hd1 data...
+- xorw %ax, %ax
+- movw %ax, %ds
+- ldsw (4 * 0x46), %si
+- popw %cx
+- popw %es
+- movw $0x0090, %di
+- rep
+- movsb
+-# Check that there IS a hd1 :-)
+- movw $0x01500, %ax
+- movb $0x81, %dl
+- int $0x13
+- jc no_disk1
+-
+- cmpb $3, %ah
+- je is_disk1
+-
+-no_disk1:
+- movw %cs, %ax # aka SETUPSEG
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- movw %ax, %es
+- movw $0x0090, %di
+- movw $0x10, %cx
+- xorw %ax, %ax
+- cld
+- rep
+- stosb
+-is_disk1:
+-
+-# Check for PS/2 pointing device
+- movw %cs, %ax # aka SETUPSEG
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- movw %ax, %ds
+- movb $0, (0x1ff) # default is no pointing device
+- int $0x11 # int 0x11: equipment list
+- testb $0x04, %al # check if mouse installed
+- jz no_psmouse
+-
+- movb $0xAA, (0x1ff) # device present
+-no_psmouse:
+-
+-#include "../../i386/boot/edd.S"
+-
+-# Now we want to move to protected mode ...
+- cmpw $0, %cs:realmode_swtch
+- jz rmodeswtch_normal
+-
+- lcall *%cs:realmode_swtch
+-
+- jmp rmodeswtch_end
+-
+-rmodeswtch_normal:
+- pushw %cs
+- call default_switch
+-
+-rmodeswtch_end:
+-# we get the code32 start address and modify the below 'jmpi'
+-# (loader may have changed it)
+- movl %cs:code32_start, %eax
+- movl %eax, %cs:code32
+-
+-# Now we move the system to its rightful place ... but we check if we have a
+-# big-kernel. In that case we *must* not move it ...
+- testb $LOADED_HIGH, %cs:loadflags
+- jz do_move0 # .. then we have a normal low
+- # loaded zImage
+- # .. or else we have a high
+- # loaded bzImage
+- jmp end_move # ... and we skip moving
+-
+-do_move0:
+- movw $0x100, %ax # start of destination segment
+- movw %cs, %bp # aka SETUPSEG
+- subw $DELTA_INITSEG, %bp # aka INITSEG
+- movw %cs:start_sys_seg, %bx # start of source segment
+- cld
+-do_move:
+- movw %ax, %es # destination segment
+- incb %ah # instead of add ax,#0x100
+- movw %bx, %ds # source segment
+- addw $0x100, %bx
+- subw %di, %di
+- subw %si, %si
+- movw $0x800, %cx
+- rep
+- movsw
+- cmpw %bp, %bx # assume start_sys_seg > 0x200,
+- # so we will perhaps read one
+- # page more than needed, but
+- # never overwrite INITSEG
+- # because destination is a
+- # minimum one page below source
+- jb do_move
+-
+-end_move:
+-# then we load the segment descriptors
+- movw %cs, %ax # aka SETUPSEG
+- movw %ax, %ds
+-
+-# Check whether we need to be downward compatible with version <=201
+- cmpl $0, cmd_line_ptr
+- jne end_move_self # loader uses version >=202 features
+- cmpb $0x20, type_of_loader
+- je end_move_self # bootsect loader, we know of it
+-
+-# Boot loader doesnt support boot protocol version 2.02.
+-# If we have our code not at 0x90000, we need to move it there now.
+-# We also then need to move the params behind it (commandline)
+-# Because we would overwrite the code on the current IP, we move
+-# it in two steps, jumping high after the first one.
+- movw %cs, %ax
+- cmpw $SETUPSEG, %ax
+- je end_move_self
+-
+- cli # make sure we really have
+- # interrupts disabled !
+- # because after this the stack
+- # should not be used
+- subw $DELTA_INITSEG, %ax # aka INITSEG
+- movw %ss, %dx
+- cmpw %ax, %dx
+- jb move_self_1
+-
+- addw $INITSEG, %dx
+- subw %ax, %dx # this will go into %ss after
+- # the move
+-move_self_1:
+- movw %ax, %ds
+- movw $INITSEG, %ax # real INITSEG
+- movw %ax, %es
+- movw %cs:setup_move_size, %cx
+- std # we have to move up, so we use
+- # direction down because the
+- # areas may overlap
+- movw %cx, %di
+- decw %di
+- movw %di, %si
+- subw $move_self_here+0x200, %cx
+- rep
+- movsb
+- ljmp $SETUPSEG, $move_self_here
+-
+-move_self_here:
+- movw $move_self_here+0x200, %cx
+- rep
+- movsb
+- movw $SETUPSEG, %ax
+- movw %ax, %ds
+- movw %dx, %ss
+-end_move_self: # now we are at the right place
+- lidt idt_48 # load idt with 0,0
+- xorl %eax, %eax # Compute gdt_base
+- movw %ds, %ax # (Convert %ds:gdt to a linear ptr)
+- shll $4, %eax
+- addl $gdt, %eax
+- movl %eax, (gdt_48+2)
+- lgdt gdt_48 # load gdt with whatever is
+- # appropriate
+-
+-# that was painless, now we enable a20
+- call empty_8042
+-
+- movb $0xD1, %al # command write
+- outb %al, $0x64
+- call empty_8042
+-
+- movb $0xDF, %al # A20 on
+- outb %al, $0x60
+- call empty_8042
+-
+-#
+-# You must preserve the other bits here. Otherwise embarrasing things
+-# like laptops powering off on boot happen. Corrected version by Kira
+-# Brown from Linux 2.2
+-#
+- inb $0x92, %al #
+- orb $02, %al # "fast A20" version
+- outb %al, $0x92 # some chips have only this
+-
+-# wait until a20 really *is* enabled; it can take a fair amount of
+-# time on certain systems; Toshiba Tecras are known to have this
+-# problem. The memory location used here (0x200) is the int 0x80
+-# vector, which should be safe to use.
+-
+- xorw %ax, %ax # segment 0x0000
+- movw %ax, %fs
+- decw %ax # segment 0xffff (HMA)
+- movw %ax, %gs
+-a20_wait:
+- incw %ax # unused memory location <0xfff0
+- movw %ax, %fs:(0x200) # we use the "int 0x80" vector
+- cmpw %gs:(0x210), %ax # and its corresponding HMA addr
+- je a20_wait # loop until no longer aliased
+-
+-# make sure any possible coprocessor is properly reset..
+- xorw %ax, %ax
+- outb %al, $0xf0
+- call delay
+-
+- outb %al, $0xf1
+- call delay
+-
+-# well, that went ok, I hope. Now we mask all interrupts - the rest
+-# is done in init_IRQ().
+- movb $0xFF, %al # mask all interrupts for now
+- outb %al, $0xA1
+- call delay
+-
+- movb $0xFB, %al # mask all irq's but irq2 which
+- outb %al, $0x21 # is cascaded
+-
+-# Well, that certainly wasn't fun :-(. Hopefully it works, and we don't
+-# need no steenking BIOS anyway (except for the initial loading :-).
+-# The BIOS-routine wants lots of unnecessary data, and it's less
+-# "interesting" anyway. This is how REAL programmers do it.
+-#
+-# Well, now's the time to actually move into protected mode. To make
+-# things as simple as possible, we do no register set-up or anything,
+-# we let the gnu-compiled 32-bit programs do that. We just jump to
+-# absolute address 0x1000 (or the loader supplied one),
+-# in 32-bit protected mode.
+-#
+-# Note that the short jump isn't strictly needed, although there are
+-# reasons why it might be a good idea. It won't hurt in any case.
+- movw $1, %ax # protected mode (PE) bit
+- lmsw %ax # This is it!
+- jmp flush_instr
+-
+-flush_instr:
+- xorw %bx, %bx # Flag to indicate a boot
+- xorl %esi, %esi # Pointer to real-mode code
+- movw %cs, %si
+- subw $DELTA_INITSEG, %si
+- shll $4, %esi # Convert to 32-bit pointer
+-# NOTE: For high loaded big kernels we need a
+-# jmpi 0x100000,__KERNEL_CS
+-#
+-# but we yet haven't reloaded the CS register, so the default size
+-# of the target offset still is 16 bit.
+-# However, using an operand prefix (0x66), the CPU will properly
+-# take our 48 bit far pointer. (INTeL 80386 Programmer's Reference
+-# Manual, Mixing 16-bit and 32-bit code, page 16-6)
+-
+- .byte 0x66, 0xea # prefix + jmpi-opcode
+-code32: .long 0x1000 # will be set to 0x100000
+- # for big kernels
+- .word __KERNEL_CS
+-
+-# Here's a bunch of information about your current kernel..
+-kernel_version: .ascii UTS_RELEASE
+- .ascii " ("
+- .ascii LINUX_COMPILE_BY
+- .ascii "@"
+- .ascii LINUX_COMPILE_HOST
+- .ascii ") "
+- .ascii UTS_VERSION
+- .byte 0
+-
+-# This is the default real mode switch routine.
+-# to be called just before protected mode transition
+-default_switch:
+- cli # no interrupts allowed !
+- movb $0x80, %al # disable NMI for bootup
+- # sequence
+- outb %al, $0x70
+- lret
+-
+-
+-# This routine checks that the keyboard command queue is empty
+-# (after emptying the output buffers)
+-#
+-# Some machines have delusions that the keyboard buffer is always full
+-# with no keyboard attached...
+-#
+-# If there is no keyboard controller, we will usually get 0xff
+-# to all the reads. With each IO taking a microsecond and
+-# a timeout of 100,000 iterations, this can take about half a
+-# second ("delay" == outb to port 0x80). That should be ok,
+-# and should also be plenty of time for a real keyboard controller
+-# to empty.
+-#
+-
+-empty_8042:
+- pushl %ecx
+- movl $100000, %ecx
+-
+-empty_8042_loop:
+- decl %ecx
+- jz empty_8042_end_loop
+-
+- call delay
+-
+- inb $0x64, %al # 8042 status port
+- testb $1, %al # output buffer?
+- jz no_output
+-
+- call delay
+- inb $0x60, %al # read it
+- jmp empty_8042_loop
+-
+-no_output:
+- testb $2, %al # is input buffer full?
+- jnz empty_8042_loop # yes - loop
+-empty_8042_end_loop:
+- popl %ecx
+- ret
+-
+-# Read the cmos clock. Return the seconds in al
+-gettime:
+- pushw %cx
+- movb $0x02, %ah
+- int $0x1a
+- movb %dh, %al # %dh contains the seconds
+- andb $0x0f, %al
+- movb %dh, %ah
+- movb $0x04, %cl
+- shrb %cl, %ah
+- aad
+- popw %cx
+- ret
+-
+-# Delay is needed after doing I/O
+-delay:
+- outb %al,$0x80
+- ret
+-
+-# Descriptor tables
+-gdt:
+- .word 0, 0, 0, 0 # dummy
+-
+- .word 0, 0, 0, 0 # unused
+-
+- .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
+- .word 0 # base address = 0
+- .word 0x9A00 # code read/exec
+- .word 0x00CF # granularity = 4096, 386
+- # (+5th nibble of limit)
+-
+- .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
+- .word 0 # base address = 0
+- .word 0x9200 # data read/write
+- .word 0x00CF # granularity = 4096, 386
+- # (+5th nibble of limit)
+-gdt_end:
+-idt_48:
+- .word 0 # idt limit = 0
+- .word 0, 0 # idt base = 0L
+-gdt_48:
+- .word gdt_end-gdt-1 # gdt limit
+- .word 0, 0 # gdt base (filled in later)
+-
+-# Include video setup & detection code
+-
+-#include "../../i386/boot/video.S"
+-
+-# Setup signature -- must be last
+-setup_sig1: .word SIG1
+-setup_sig2: .word SIG2
+-
+-# After this point, there is some free space which is used by the video mode
+-# handling code to store the temporary mode table (not used by the kernel).
+-
+-modelist:
+-
+-.text
+-endtext:
+-.data
+-enddata:
+-.bss
+-endbss:
+diff -puN arch/x86_64/boot/tools/build.c~git-newsetup /dev/null
+--- a/arch/x86_64/boot/tools/build.c
++++ /dev/null
+@@ -1,185 +0,0 @@
+-/*
+- * Copyright (C) 1991, 1992 Linus Torvalds
+- * Copyright (C) 1997 Martin Mares
+- */
+-
+-/*
+- * This file builds a disk-image from three different files:
+- *
+- * - bootsect: compatibility mbr which prints an error message if
+- * someone tries to boot the kernel directly.
+- * - setup: 8086 machine code, sets up system parm
+- * - system: 80386 code for actual system
+- *
+- * It does some checking that all files are of the correct type, and
+- * just writes the result to stdout, removing headers and padding to
+- * the right amount. It also writes some system data to stderr.
+- */
+-
+-/*
+- * Changes by tytso to allow root device specification
+- * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996
+- * Cross compiling fixes by Gertjan van Wingerde, July 1996
+- * Rewritten by Martin Mares, April 1997
+- */
+-
+-#include <stdio.h>
+-#include <string.h>
+-#include <stdlib.h>
+-#include <stdarg.h>
+-#include <sys/types.h>
+-#include <sys/stat.h>
+-#include <sys/sysmacros.h>
+-#include <unistd.h>
+-#include <fcntl.h>
+-#include <asm/boot.h>
+-
+-typedef unsigned char byte;
+-typedef unsigned short word;
+-typedef unsigned long u32;
+-
+-#define DEFAULT_MAJOR_ROOT 0
+-#define DEFAULT_MINOR_ROOT 0
+-
+-/* Minimal number of setup sectors (see also bootsect.S) */
+-#define SETUP_SECTS 4
+-
+-byte buf[1024];
+-int fd;
+-int is_big_kernel;
+-
+-void die(const char * str, ...)
+-{
+- va_list args;
+- va_start(args, str);
+- vfprintf(stderr, str, args);
+- fputc('\n', stderr);
+- exit(1);
+-}
+-
+-void file_open(const char *name)
+-{
+- if ((fd = open(name, O_RDONLY, 0)) < 0)
+- die("Unable to open `%s': %m", name);
+-}
+-
+-void usage(void)
+-{
+- die("Usage: build [-b] bootsect setup system [rootdev] [> image]");
+-}
+-
+-int main(int argc, char ** argv)
+-{
+- unsigned int i, c, sz, setup_sectors;
+- u32 sys_size;
+- byte major_root, minor_root;
+- struct stat sb;
+-
+- if (argc > 2 && !strcmp(argv[1], "-b"))
+- {
+- is_big_kernel = 1;
+- argc--, argv++;
+- }
+- if ((argc < 4) || (argc > 5))
+- usage();
+- if (argc > 4) {
+- if (!strcmp(argv[4], "CURRENT")) {
+- if (stat("/", &sb)) {
+- perror("/");
+- die("Couldn't stat /");
+- }
+- major_root = major(sb.st_dev);
+- minor_root = minor(sb.st_dev);
+- } else if (strcmp(argv[4], "FLOPPY")) {
+- if (stat(argv[4], &sb)) {
+- perror(argv[4]);
+- die("Couldn't stat root device.");
+- }
+- major_root = major(sb.st_rdev);
+- minor_root = minor(sb.st_rdev);
+- } else {
+- major_root = 0;
+- minor_root = 0;
+- }
+- } else {
+- major_root = DEFAULT_MAJOR_ROOT;
+- minor_root = DEFAULT_MINOR_ROOT;
+- }
+- fprintf(stderr, "Root device is (%d, %d)\n", major_root, minor_root);
+-
+- file_open(argv[1]);
+- i = read(fd, buf, sizeof(buf));
+- fprintf(stderr,"Boot sector %d bytes.\n",i);
+- if (i != 512)
+- die("Boot block must be exactly 512 bytes");
+- if (buf[510] != 0x55 || buf[511] != 0xaa)
+- die("Boot block hasn't got boot flag (0xAA55)");
+- buf[508] = minor_root;
+- buf[509] = major_root;
+- if (write(1, buf, 512) != 512)
+- die("Write call failed");
+- close (fd);
+-
+- file_open(argv[2]); /* Copy the setup code */
+- for (i=0 ; (c=read(fd, buf, sizeof(buf)))>0 ; i+=c )
+- if (write(1, buf, c) != c)
+- die("Write call failed");
+- if (c != 0)
+- die("read-error on `setup'");
+- close (fd);
+-
+- setup_sectors = (i + 511) / 512; /* Pad unused space with zeros */
+- /* for compatibility with ancient versions of LILO. */
+- if (setup_sectors < SETUP_SECTS)
+- setup_sectors = SETUP_SECTS;
+- fprintf(stderr, "Setup is %d bytes.\n", i);
+- memset(buf, 0, sizeof(buf));
+- while (i < setup_sectors * 512) {
+- c = setup_sectors * 512 - i;
+- if (c > sizeof(buf))
+- c = sizeof(buf);
+- if (write(1, buf, c) != c)
+- die("Write call failed");
+- i += c;
+- }
+-
+- file_open(argv[3]);
+- if (fstat (fd, &sb))
+- die("Unable to stat `%s': %m", argv[3]);
+- sz = sb.st_size;
+- fprintf (stderr, "System is %d kB\n", sz/1024);
+- sys_size = (sz + 15) / 16;
+- if (!is_big_kernel && sys_size > DEF_SYSSIZE)
+- die("System is too big. Try using bzImage or modules.");
+- while (sz > 0) {
+- int l, n;
+-
+- l = (sz > sizeof(buf)) ? sizeof(buf) : sz;
+- if ((n=read(fd, buf, l)) != l) {
+- if (n < 0)
+- die("Error reading %s: %m", argv[3]);
+- else
+- die("%s: Unexpected EOF", argv[3]);
+- }
+- if (write(1, buf, l) != l)
+- die("Write failed");
+- sz -= l;
+- }
+- close(fd);
+-
+- if (lseek(1, 497, SEEK_SET) != 497) /* Write sizes to the bootsector */
+- die("Output: seek failed");
+- buf[0] = setup_sectors;
+- if (write(1, buf, 1) != 1)
+- die("Write of setup sector count failed");
+- if (lseek(1, 500, SEEK_SET) != 500)
+- die("Output: seek failed");
+- buf[0] = (sys_size & 0xff);
+- buf[1] = ((sys_size >> 8) & 0xff);
+- buf[2] = ((sys_size >> 16) & 0xff);
+- buf[3] = ((sys_size >> 24) & 0xff);
+- if (write(1, buf, 4) != 4)
+- die("Write of image length failed");
+-
+- return 0; /* Everything is OK */
+-}
+diff -puN arch/x86_64/kernel/Makefile~git-newsetup arch/x86_64/kernel/Makefile
+--- a/arch/x86_64/kernel/Makefile~git-newsetup
++++ a/arch/x86_64/kernel/Makefile
+@@ -45,6 +45,7 @@ obj-$(CONFIG_PCI) += early-quirks.o
+
+ obj-y += topology.o
+ obj-y += intel_cacheinfo.o
++obj-y += addon_cpuid_features.o
+ obj-y += pcspeaker.o
+
+ CFLAGS_vsyscall.o := $(PROFILING) -g0
+@@ -58,6 +59,7 @@ cpuid-$(subst m,y,$(CONFIG_X86_CPUID))
+ topology-y += ../../i386/kernel/topology.o
+ microcode-$(subst m,y,$(CONFIG_MICROCODE)) += ../../i386/kernel/microcode.o
+ intel_cacheinfo-y += ../../i386/kernel/cpu/intel_cacheinfo.o
++addon_cpuid_features-y += ../../i386/kernel/cpu/addon_cpuid_features.o
+ quirks-y += ../../i386/kernel/quirks.o
+ i8237-y += ../../i386/kernel/i8237.o
+ msr-$(subst m,y,$(CONFIG_X86_MSR)) += ../../i386/kernel/msr.o
+diff -puN arch/x86_64/kernel/setup.c~git-newsetup arch/x86_64/kernel/setup.c
+--- a/arch/x86_64/kernel/setup.c~git-newsetup
++++ a/arch/x86_64/kernel/setup.c
+@@ -855,6 +855,8 @@ void __cpuinit identify_cpu(struct cpuin
+ c->x86_capability[2] = cpuid_edx(0x80860001);
+ }
+
++ init_scattered_cpuid_features(c);
++
+ c->apicid = phys_pkg_id(0);
+
+ /*
+@@ -940,7 +942,7 @@ static int show_cpuinfo(struct seq_file
+ "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
+ "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
+ "pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
+- "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", NULL,
++ "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
+
+ /* AMD-defined */
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+@@ -956,10 +958,11 @@ static int show_cpuinfo(struct seq_file
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+
+ /* Other (Linux-defined) */
+- "cxmmx", NULL, "cyrix_arr", "centaur_mcr", NULL,
+- "constant_tsc", NULL, NULL,
+- "up", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
++ "cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
++ NULL, NULL, NULL, NULL,
++ "constant_tsc", "up", NULL, "arch_perfmon",
++ "pebs", "bts", NULL, "sync_rdtsc",
++ "rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+
+ /* Intel-defined (#2) */
+@@ -970,7 +973,7 @@ static int show_cpuinfo(struct seq_file
+
+ /* VIA/Cyrix/Centaur-defined */
+ NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
+- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
++ "ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+
+@@ -981,6 +984,12 @@ static int show_cpuinfo(struct seq_file
+ "osvw", "ibs", NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
++
++ /* Auxiliary (Linux-defined) */
++ "ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
++ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
++ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
++ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ };
+ static char *x86_power_flags[] = {
+ "ts", /* temperature sensor */
+diff -puN arch/x86_64/kernel/verify_cpu.S~git-newsetup arch/x86_64/kernel/verify_cpu.S
+--- a/arch/x86_64/kernel/verify_cpu.S~git-newsetup
++++ a/arch/x86_64/kernel/verify_cpu.S
+@@ -37,20 +37,6 @@ verify_cpu:
+ pushl $0 # Kill any dangerous flags
+ popfl
+
+- /* minimum CPUID flags for x86-64 as defined by AMD */
+-#define M(x) (1<<(x))
+-#define M2(a,b) M(a)|M(b)
+-#define M4(a,b,c,d) M(a)|M(b)|M(c)|M(d)
+-
+-#define SSE_MASK \
+- (M2(X86_FEATURE_XMM,X86_FEATURE_XMM2))
+-#define REQUIRED_MASK1 \
+- (M4(X86_FEATURE_FPU,X86_FEATURE_PSE,X86_FEATURE_TSC,X86_FEATURE_MSR)|\
+- M4(X86_FEATURE_PAE,X86_FEATURE_CX8,X86_FEATURE_PGE,X86_FEATURE_CMOV)|\
+- M(X86_FEATURE_FXSR))
+-#define REQUIRED_MASK2 \
+- (M(X86_FEATURE_LM - 32))
+-
+ pushfl # standard way to check for cpuid
+ popl %eax
+ movl %eax,%ebx
+@@ -79,8 +65,8 @@ verify_cpu:
+ verify_cpu_noamd:
+ movl $0x1,%eax # Does the cpu have what it takes
+ cpuid
+- andl $REQUIRED_MASK1,%edx
+- xorl $REQUIRED_MASK1,%edx
++ andl $REQUIRED_MASK0,%edx
++ xorl $REQUIRED_MASK0,%edx
+ jnz verify_cpu_no_longmode
+
+ movl $0x80000000,%eax # See if extended cpuid is implemented
+@@ -90,8 +76,8 @@ verify_cpu_noamd:
+
+ movl $0x80000001,%eax # Does the cpu have what it takes
+ cpuid
+- andl $REQUIRED_MASK2,%edx
+- xorl $REQUIRED_MASK2,%edx
++ andl $REQUIRED_MASK1,%edx
++ xorl $REQUIRED_MASK1,%edx
+ jnz verify_cpu_no_longmode
+
+ verify_cpu_sse_test:
+diff -puN drivers/ide/legacy/hd.c~git-newsetup drivers/ide/legacy/hd.c
+--- a/drivers/ide/legacy/hd.c~git-newsetup
++++ a/drivers/ide/legacy/hd.c
+@@ -718,74 +718,25 @@ static int __init hd_init(void)
+ device_timer.function = hd_times_out;
+ blk_queue_hardsect_size(hd_queue, 512);
+
+-#ifdef __i386__
+ if (!NR_HD) {
+- extern struct drive_info drive_info;
+- unsigned char *BIOS = (unsigned char *) &drive_info;
+- unsigned long flags;
+- int cmos_disks;
+-
+- for (drive=0 ; drive<2 ; drive++) {
+- hd_info[drive].cyl = *(unsigned short *) BIOS;
+- hd_info[drive].head = *(2+BIOS);
+- hd_info[drive].wpcom = *(unsigned short *) (5+BIOS);
+- hd_info[drive].ctl = *(8+BIOS);
+- hd_info[drive].lzone = *(unsigned short *) (12+BIOS);
+- hd_info[drive].sect = *(14+BIOS);
+-#ifdef does_not_work_for_everybody_with_scsi_but_helps_ibm_vp
+- if (hd_info[drive].cyl && NR_HD == drive)
+- NR_HD++;
+-#endif
+- BIOS += 16;
+- }
+-
+- /*
+- We query CMOS about hard disks : it could be that
+- we have a SCSI/ESDI/etc controller that is BIOS
+- compatible with ST-506, and thus showing up in our
+- BIOS table, but not register compatible, and therefore
+- not present in CMOS.
+-
+- Furthermore, we will assume that our ST-506 drives
+- <if any> are the primary drives in the system, and
+- the ones reflected as drive 1 or 2.
+-
+- The first drive is stored in the high nibble of CMOS
+- byte 0x12, the second in the low nibble. This will be
+- either a 4 bit drive type or 0xf indicating use byte 0x19
+- for an 8 bit type, drive 1, 0x1a for drive 2 in CMOS.
+-
+- Needless to say, a non-zero value means we have
+- an AT controller hard disk for that drive.
+-
+- Currently the rtc_lock is a bit academic since this
+- driver is non-modular, but someday... ? Paul G.
+- */
+-
+- spin_lock_irqsave(&rtc_lock, flags);
+- cmos_disks = CMOS_READ(0x12);
+- spin_unlock_irqrestore(&rtc_lock, flags);
+-
+- if (cmos_disks & 0xf0) {
+- if (cmos_disks & 0x0f)
+- NR_HD = 2;
+- else
+- NR_HD = 1;
+- }
+- }
+-#endif /* __i386__ */
+-#ifdef __arm__
+- if (!NR_HD) {
+- /* We don't know anything about the drive. This means
++ /*
++ * We don't know anything about the drive. This means
+ * that you *MUST* specify the drive parameters to the
+ * kernel yourself.
++ *
++ * If we were on an i386, we used to read this info from
++ * the BIOS or CMOS. This doesn't work all that well,
++ * since this assumes that this is a primary or secondary
++ * drive, and if we're using this legacy driver, it's
++ * probably an auxilliary controller added to recover
++ * legacy data off an ST-506 drive. Either way, it's
++ * definitely safest to have the user explicitly specify
++ * the information.
+ */
+ printk("hd: no drives specified - use hd=cyl,head,sectors"
+ " on kernel command line\n");
+- }
+-#endif
+- if (!NR_HD)
+ goto out;
++ }
+
+ for (drive=0 ; drive < NR_HD ; drive++) {
+ struct gendisk *disk = alloc_disk(64);
+diff -puN include/asm-i386/boot.h~git-newsetup include/asm-i386/boot.h
+--- a/include/asm-i386/boot.h~git-newsetup
++++ a/include/asm-i386/boot.h
+@@ -1,5 +1,5 @@
+-#ifndef _LINUX_BOOT_H
+-#define _LINUX_BOOT_H
++#ifndef _ASM_BOOT_H
++#define _ASM_BOOT_H
+
+ /* Don't touch these, unless you really know what you're doing. */
+ #define DEF_INITSEG 0x9000
+@@ -17,4 +17,4 @@
+ + (CONFIG_PHYSICAL_ALIGN - 1)) \
+ & ~(CONFIG_PHYSICAL_ALIGN - 1))
+
+-#endif /* _LINUX_BOOT_H */
++#endif /* _ASM_BOOT_H */
+diff -puN /dev/null include/asm-i386/bootparam.h
+--- /dev/null
++++ a/include/asm-i386/bootparam.h
+@@ -0,0 +1,85 @@
++#ifndef _ASM_BOOTPARAM_H
++#define _ASM_BOOTPARAM_H
++
++#include <linux/types.h>
++#include <linux/screen_info.h>
++#include <linux/apm_bios.h>
++#include <asm/e820.h>
++#include <linux/edd.h>
++#include <video/edid.h>
++
++struct setup_header {
++ u8 setup_sects;
++ u16 root_flags;
++ u32 syssize;
++ u16 ram_size;
++ u16 vid_mode;
++ u16 root_dev;
++ u16 boot_flag;
++ u16 jump;
++ u32 header;
++ u16 version;
++ u32 realmode_swtch;
++ u16 start_sys;
++ u16 kernel_version;
++ u8 type_of_loader;
++ u8 loadflags;
++#define LOADED_HIGH 0x01
++#define CAN_USE_HEAP 0x80
++ u16 setup_move_size;
++ u32 code32_start;
++ u32 ramdisk_image;
++ u32 ramdisk_size;
++ u32 bootsect_kludge;
++ u16 heap_end_ptr;
++ u16 _pad1;
++ u32 cmd_line_ptr;
++ u32 initrd_addr_max;
++ u32 kernel_alignment;
++ u8 relocatable_kernel;
++} __attribute__((packed));
++
++struct sys_desc_table {
++ u16 length;
++ u8 table[14];
++};
++
++struct efi_info {
++ u32 _pad1;
++ u32 efi_systab;
++ u32 efi_memdesc_size;
++ u32 efi_memdec_version;
++ u32 efi_memmap;
++ u32 fi_memmap_size;
++ u32 _pad2[2];
++};
++
++/* The so-called "zeropage" */
++struct boot_params {
++ struct screen_info screen_info; /* 0x000 */
++ struct apm_bios_info apm_bios_info; /* 0x040 */
++ u8 _pad2[12]; /* 0x054 */
++ u32 speedstep_info[4]; /* 0x060 */
++ u8 _pad3[16]; /* 0x070 */
++ u8 hd0_info[16]; /* obsolete! */ /* 0x080 */
++ u8 hd1_info[16]; /* obsolete! */ /* 0x090 */
++ struct sys_desc_table sys_desc_table; /* 0x0a0 */
++ u8 _pad4[144]; /* 0x0b0 */
++ struct edid_info edid_info; /* 0x140 */
++ struct efi_info efi_info; /* 0x1c0 */
++ u32 alt_mem_k; /* 0x1e0 */
++ u32 scratch; /* Scratch field! */ /* 0x1e4 */
++ u8 e820_entries; /* 0x1e8 */
++ u8 eddbuf_entries; /* 0x1e9 */
++ u8 edd_mbr_sig_buf_entries; /* 0x1ea */
++ u8 _pad6[6]; /* 0x1eb */
++ struct setup_header hdr; /* setup header */ /* 0x1f1 */
++ u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
++ u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
++ struct e820entry e820_map[E820MAX]; /* 0x2d0 */
++ u8 _pad8[48]; /* 0xcd0 */
++ struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */
++ u8 _pad9[276]; /* 0xeec */
++} __attribute__((packed));
++
++#endif /* _ASM_BOOTPARAM_H */
+diff -puN include/asm-i386/cpufeature.h~git-newsetup include/asm-i386/cpufeature.h
+--- a/include/asm-i386/cpufeature.h~git-newsetup
++++ a/include/asm-i386/cpufeature.h
+@@ -12,7 +12,7 @@
+ #endif
+ #include <asm/required-features.h>
+
+-#define NCAPINTS 7 /* N 32-bit words worth of info */
++#define NCAPINTS 8 /* N 32-bit words worth of info */
+
+ /* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */
+ #define X86_FEATURE_FPU (0*32+ 0) /* Onboard FPU */
+@@ -81,6 +81,7 @@
+ #define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */
+ #define X86_FEATURE_LAPIC_TIMER_BROKEN (3*32+ 14) /* lapic timer broken in C1 */
+ #define X86_FEATURE_SYNC_RDTSC (3*32+15) /* RDTSC synchronizes the CPU */
++#define X86_FEATURE_REP_GOOD (3*32+16) /* rep microcode works well on this CPU */
+
+ /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
+ #define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
+@@ -108,11 +109,24 @@
+ #define X86_FEATURE_LAHF_LM (6*32+ 0) /* LAHF/SAHF in long mode */
+ #define X86_FEATURE_CMP_LEGACY (6*32+ 1) /* If yes HyperThreading not valid */
+
+-#define cpu_has(c, bit) \
+- ((__builtin_constant_p(bit) && (bit) < 32 && \
+- (1UL << (bit)) & REQUIRED_MASK1) ? \
+- 1 : \
+- test_bit(bit, (c)->x86_capability))
++/*
++ * Auxiliary flags: Linux defined - For features scattered in various
++ * CPUID levels like 0x6, 0xA etc
++ */
++#define X86_FEATURE_IDA (7*32+ 0) /* Intel Dynamic Acceleration */
++
++#define cpu_has(c, bit) \
++ (__builtin_constant_p(bit) && \
++ ( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) || \
++ (((bit)>>5)==1 && (1UL<<((bit)&31) & REQUIRED_MASK1)) || \
++ (((bit)>>5)==2 && (1UL<<((bit)&31) & REQUIRED_MASK2)) || \
++ (((bit)>>5)==3 && (1UL<<((bit)&31) & REQUIRED_MASK3)) || \
++ (((bit)>>5)==4 && (1UL<<((bit)&31) & REQUIRED_MASK4)) || \
++ (((bit)>>5)==5 && (1UL<<((bit)&31) & REQUIRED_MASK5)) || \
++ (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) || \
++ (((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) ) \
++ ? 1 : \
++ test_bit(bit, (c)->x86_capability))
+ #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit)
+
+ #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU)
+diff -puN include/asm-i386/e820.h~git-newsetup include/asm-i386/e820.h
+--- a/include/asm-i386/e820.h~git-newsetup
++++ a/include/asm-i386/e820.h
+@@ -25,13 +25,15 @@
+
+ #ifndef __ASSEMBLY__
+
++struct e820entry {
++ u64 addr; /* start of memory segment */
++ u64 size; /* size of memory segment */
++ u32 type; /* type of memory segment */
++} __attribute__((packed));
++
+ struct e820map {
+- int nr_map;
+- struct e820entry {
+- unsigned long long addr; /* start of memory segment */
+- unsigned long long size; /* size of memory segment */
+- unsigned long type; /* type of memory segment */
+- } map[E820MAX];
++ u32 nr_map;
++ struct e820entry map[E820MAX];
+ };
+
+ extern struct e820map e820;
+diff -puN include/asm-i386/processor.h~git-newsetup include/asm-i386/processor.h
+--- a/include/asm-i386/processor.h~git-newsetup
++++ a/include/asm-i386/processor.h
+@@ -118,6 +118,7 @@ void __init cpu_detect(struct cpuinfo_x8
+ extern void identify_boot_cpu(void);
+ extern void identify_secondary_cpu(struct cpuinfo_x86 *);
+ extern void print_cpu_info(struct cpuinfo_x86 *);
++extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
+ extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
+ extern unsigned short num_cache_leaves;
+
+diff -puN include/asm-i386/required-features.h~git-newsetup include/asm-i386/required-features.h
+--- a/include/asm-i386/required-features.h~git-newsetup
++++ a/include/asm-i386/required-features.h
+@@ -3,7 +3,7 @@
+
+ /* Define minimum CPUID feature set for kernel These bits are checked
+ really early to actually display a visible error message before the
+- kernel dies. Only add word 0 bits here
++ kernel dies. Make sure to assign features to the proper mask!
+
+ Some requirements that are not in CPUID yet are also in the
+ CONFIG_X86_MINIMUM_CPU mode which is checked too.
+@@ -11,24 +11,45 @@
+ The real information is in arch/i386/Kconfig.cpu, this just converts
+ the CONFIGs into a bitmask */
+
++#ifndef CONFIG_MATH_EMULATION
++# define NEED_FPU (1<<(X86_FEATURE_FPU & 31))
++#else
++# define NEED_FPU 0
++#endif
++
+ #ifdef CONFIG_X86_PAE
+-#define NEED_PAE (1<<X86_FEATURE_PAE)
++# define NEED_PAE (1<<(X86_FEATURE_PAE & 31))
+ #else
+-#define NEED_PAE 0
++# define NEED_PAE 0
+ #endif
+
+ #ifdef CONFIG_X86_CMOV
+-#define NEED_CMOV (1<<X86_FEATURE_CMOV)
++# define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31))
+ #else
+-#define NEED_CMOV 0
++# define NEED_CMOV 0
+ #endif
+
+ #ifdef CONFIG_X86_CMPXCHG64
+-#define NEED_CMPXCHG64 (1<<X86_FEATURE_CX8)
++# define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31))
++#else
++# define NEED_CX8 0
++#endif
++
++#define REQUIRED_MASK0 (NEED_FPU|NEED_PAE|NEED_CMOV|NEED_CX8)
++
++#ifdef CONFIG_X86_USE_3DNOW
++# define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31))
+ #else
+-#define NEED_CMPXCHG64 0
++# define NEED_3DNOW 0
+ #endif
+
+-#define REQUIRED_MASK1 (NEED_PAE|NEED_CMOV|NEED_CMPXCHG64)
++#define REQUIRED_MASK1 (NEED_3DNOW)
++
++#define REQUIRED_MASK2 0
++#define REQUIRED_MASK3 0
++#define REQUIRED_MASK4 0
++#define REQUIRED_MASK5 0
++#define REQUIRED_MASK6 0
++#define REQUIRED_MASK7 0
+
+ #endif
+diff -puN include/asm-i386/setup.h~git-newsetup include/asm-i386/setup.h
+--- a/include/asm-i386/setup.h~git-newsetup
++++ a/include/asm-i386/setup.h
+@@ -26,12 +26,15 @@
+ #define NEW_CL_POINTER 0x228 /* Relative to real mode data */
+
+ #ifndef __ASSEMBLY__
++
++#include <asm/bootparam.h>
++
+ /*
+ * This is set up by the setup-routine at boot-time
+ */
+-extern unsigned char boot_params[PARAM_SIZE];
++extern struct boot_params boot_params;
+
+-#define PARAM (boot_params)
++#define PARAM ((char *)&boot_params)
+ #define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
+ #define EXT_MEM_K (*(unsigned short *) (PARAM+2))
+ #define ALT_MEM_K (*(unsigned long *) (PARAM+0x1e0))
+@@ -39,8 +42,7 @@ extern unsigned char boot_params[PARAM_S
+ #define E820_MAP ((struct e820entry *) (PARAM+E820MAP))
+ #define APM_BIOS_INFO (*(struct apm_bios_info *) (PARAM+0x40))
+ #define IST_INFO (*(struct ist_info *) (PARAM+0x60))
+-#define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
+-#define SYS_DESC_TABLE (*(struct sys_desc_table_struct*)(PARAM+0xa0))
++#define SYS_DESC_TABLE (*(struct sys_desc_table *)(PARAM+0xa0))
+ #define EFI_SYSTAB ((efi_system_table_t *) *((unsigned long *)(PARAM+0x1c4)))
+ #define EFI_MEMDESC_SIZE (*((unsigned long *) (PARAM+0x1c8)))
+ #define EFI_MEMDESC_VERSION (*((unsigned long *) (PARAM+0x1cc)))
+diff -puN include/asm-x86_64/alternative.h~git-newsetup include/asm-x86_64/alternative.h
+--- a/include/asm-x86_64/alternative.h~git-newsetup
++++ a/include/asm-x86_64/alternative.h
+@@ -5,6 +5,41 @@
+
+ #include <linux/types.h>
+ #include <linux/stddef.h>
++
++/*
++ * Alternative inline assembly for SMP.
++ *
++ * The LOCK_PREFIX macro defined here replaces the LOCK and
++ * LOCK_PREFIX macros used everywhere in the source tree.
++ *
++ * SMP alternatives use the same data structures as the other
++ * alternatives and the X86_FEATURE_UP flag to indicate the case of a
++ * UP system running a SMP kernel. The existing apply_alternatives()
++ * works fine for patching a SMP kernel for UP.
++ *
++ * The SMP alternative tables can be kept after boot and contain both
++ * UP and SMP versions of the instructions to allow switching back to
++ * SMP at runtime, when hotplugging in a new CPU, which is especially
++ * useful in virtualized environments.
++ *
++ * The very common lock prefix is handled as special case in a
++ * separate table which is a pure address list without replacement ptr
++ * and size information. That keeps the table sizes small.
++ */
++
++#ifdef CONFIG_SMP
++#define LOCK_PREFIX \
++ ".section .smp_locks,\"a\"\n" \
++ " .align 8\n" \
++ " .quad 661f\n" /* address */ \
++ ".previous\n" \
++ "661:\n\tlock; "
++
++#else /* ! CONFIG_SMP */
++#define LOCK_PREFIX ""
++#endif
++
++/* This must be included *after* the definition of LOCK_PREFIX */
+ #include <asm/cpufeature.h>
+
+ struct alt_instr {
+@@ -108,39 +143,6 @@ static inline void alternatives_smp_swit
+ */
+ #define ASM_OUTPUT2(a, b) a, b
+
+-/*
+- * Alternative inline assembly for SMP.
+- *
+- * The LOCK_PREFIX macro defined here replaces the LOCK and
+- * LOCK_PREFIX macros used everywhere in the source tree.
+- *
+- * SMP alternatives use the same data structures as the other
+- * alternatives and the X86_FEATURE_UP flag to indicate the case of a
+- * UP system running a SMP kernel. The existing apply_alternatives()
+- * works fine for patching a SMP kernel for UP.
+- *
+- * The SMP alternative tables can be kept after boot and contain both
+- * UP and SMP versions of the instructions to allow switching back to
+- * SMP at runtime, when hotplugging in a new CPU, which is especially
+- * useful in virtualized environments.
+- *
+- * The very common lock prefix is handled as special case in a
+- * separate table which is a pure address list without replacement ptr
+- * and size information. That keeps the table sizes small.
+- */
+-
+-#ifdef CONFIG_SMP
+-#define LOCK_PREFIX \
+- ".section .smp_locks,\"a\"\n" \
+- " .align 8\n" \
+- " .quad 661f\n" /* address */ \
+- ".previous\n" \
+- "661:\n\tlock; "
+-
+-#else /* ! CONFIG_SMP */
+-#define LOCK_PREFIX ""
+-#endif
+-
+ struct paravirt_patch;
+ #ifdef CONFIG_PARAVIRT
+ void apply_paravirt(struct paravirt_patch *start, struct paravirt_patch *end);
+diff -puN include/asm-x86_64/boot.h~git-newsetup include/asm-x86_64/boot.h
+--- a/include/asm-x86_64/boot.h~git-newsetup
++++ a/include/asm-x86_64/boot.h
+@@ -1,15 +1 @@
+-#ifndef _LINUX_BOOT_H
+-#define _LINUX_BOOT_H
+-
+-/* Don't touch these, unless you really know what you're doing. */
+-#define DEF_INITSEG 0x9000
+-#define DEF_SYSSEG 0x1000
+-#define DEF_SETUPSEG 0x9020
+-#define DEF_SYSSIZE 0x7F00
+-
+-/* Internal svga startup constants */
+-#define NORMAL_VGA 0xffff /* 80x25 mode */
+-#define EXTENDED_VGA 0xfffe /* 80x50 mode */
+-#define ASK_VGA 0xfffd /* ask for it at bootup */
+-
+-#endif
++#include <asm-i386/boot.h>
+diff -puN /dev/null include/asm-x86_64/bootparam.h
+--- /dev/null
++++ a/include/asm-x86_64/bootparam.h
+@@ -0,0 +1 @@
++#include <asm-i386/bootparam.h>
+diff -puN include/asm-x86_64/cpufeature.h~git-newsetup include/asm-x86_64/cpufeature.h
+--- a/include/asm-x86_64/cpufeature.h~git-newsetup
++++ a/include/asm-x86_64/cpufeature.h
+@@ -7,115 +7,24 @@
+ #ifndef __ASM_X8664_CPUFEATURE_H
+ #define __ASM_X8664_CPUFEATURE_H
+
+-#define NCAPINTS 7 /* N 32-bit words worth of info */
++#include <asm-i386/cpufeature.h>
+
+-/* Intel-defined CPU features, CPUID level 0x00000001, word 0 */
+-#define X86_FEATURE_FPU (0*32+ 0) /* Onboard FPU */
+-#define X86_FEATURE_VME (0*32+ 1) /* Virtual Mode Extensions */
+-#define X86_FEATURE_DE (0*32+ 2) /* Debugging Extensions */
+-#define X86_FEATURE_PSE (0*32+ 3) /* Page Size Extensions */
+-#define X86_FEATURE_TSC (0*32+ 4) /* Time Stamp Counter */
+-#define X86_FEATURE_MSR (0*32+ 5) /* Model-Specific Registers, RDMSR, WRMSR */
+-#define X86_FEATURE_PAE (0*32+ 6) /* Physical Address Extensions */
+-#define X86_FEATURE_MCE (0*32+ 7) /* Machine Check Architecture */
+-#define X86_FEATURE_CX8 (0*32+ 8) /* CMPXCHG8 instruction */
+-#define X86_FEATURE_APIC (0*32+ 9) /* Onboard APIC */
+-#define X86_FEATURE_SEP (0*32+11) /* SYSENTER/SYSEXIT */
+-#define X86_FEATURE_MTRR (0*32+12) /* Memory Type Range Registers */
+-#define X86_FEATURE_PGE (0*32+13) /* Page Global Enable */
+-#define X86_FEATURE_MCA (0*32+14) /* Machine Check Architecture */
+-#define X86_FEATURE_CMOV (0*32+15) /* CMOV instruction (FCMOVCC and FCOMI too if FPU present) */
+-#define X86_FEATURE_PAT (0*32+16) /* Page Attribute Table */
+-#define X86_FEATURE_PSE36 (0*32+17) /* 36-bit PSEs */
+-#define X86_FEATURE_PN (0*32+18) /* Processor serial number */
+-#define X86_FEATURE_CLFLSH (0*32+19) /* Supports the CLFLUSH instruction */
+-#define X86_FEATURE_DS (0*32+21) /* Debug Store */
+-#define X86_FEATURE_ACPI (0*32+22) /* ACPI via MSR */
+-#define X86_FEATURE_MMX (0*32+23) /* Multimedia Extensions */
+-#define X86_FEATURE_FXSR (0*32+24) /* FXSAVE and FXRSTOR instructions (fast save and restore */
+- /* of FPU context), and CR4.OSFXSR available */
+-#define X86_FEATURE_XMM (0*32+25) /* Streaming SIMD Extensions */
+-#define X86_FEATURE_XMM2 (0*32+26) /* Streaming SIMD Extensions-2 */
+-#define X86_FEATURE_SELFSNOOP (0*32+27) /* CPU self snoop */
+-#define X86_FEATURE_HT (0*32+28) /* Hyper-Threading */
+-#define X86_FEATURE_ACC (0*32+29) /* Automatic clock control */
+-#define X86_FEATURE_IA64 (0*32+30) /* IA-64 processor */
+-
+-/* AMD-defined CPU features, CPUID level 0x80000001, word 1 */
+-/* Don't duplicate feature flags which are redundant with Intel! */
+-#define X86_FEATURE_SYSCALL (1*32+11) /* SYSCALL/SYSRET */
+-#define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */
+-#define X86_FEATURE_FXSR_OPT (1*32+25) /* FXSR optimizations */
+-#define X86_FEATURE_RDTSCP (1*32+27) /* RDTSCP */
+-#define X86_FEATURE_LM (1*32+29) /* Long Mode (x86-64) */
+-#define X86_FEATURE_3DNOWEXT (1*32+30) /* AMD 3DNow! extensions */
+-#define X86_FEATURE_3DNOW (1*32+31) /* 3DNow! */
+-
+-/* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
+-#define X86_FEATURE_RECOVERY (2*32+ 0) /* CPU in recovery mode */
+-#define X86_FEATURE_LONGRUN (2*32+ 1) /* Longrun power control */
+-#define X86_FEATURE_LRTI (2*32+ 3) /* LongRun table interface */
+-
+-/* Other features, Linux-defined mapping, word 3 */
+-/* This range is used for feature bits which conflict or are synthesized */
+-#define X86_FEATURE_CXMMX (3*32+ 0) /* Cyrix MMX extensions */
+-#define X86_FEATURE_K6_MTRR (3*32+ 1) /* AMD K6 nonstandard MTRRs */
+-#define X86_FEATURE_CYRIX_ARR (3*32+ 2) /* Cyrix ARRs (= MTRRs) */
+-#define X86_FEATURE_CENTAUR_MCR (3*32+ 3) /* Centaur MCRs (= MTRRs) */
+-#define X86_FEATURE_REP_GOOD (3*32+ 4) /* rep microcode works well on this CPU */
+-#define X86_FEATURE_CONSTANT_TSC (3*32+5) /* TSC runs at constant rate */
+-#define X86_FEATURE_SYNC_RDTSC (3*32+6) /* RDTSC syncs CPU core */
+-#define X86_FEATURE_FXSAVE_LEAK (3*32+7) /* FIP/FOP/FDP leaks through FXSAVE */
+-#define X86_FEATURE_UP (3*32+8) /* SMP kernel running on UP */
+-#define X86_FEATURE_ARCH_PERFMON (3*32+9) /* Intel Architectural PerfMon */
+-#define X86_FEATURE_PEBS (3*32+10) /* Precise-Event Based Sampling */
+-#define X86_FEATURE_BTS (3*32+11) /* Branch Trace Store */
+-
+-/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
+-#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
+-#define X86_FEATURE_MWAIT (4*32+ 3) /* Monitor/Mwait support */
+-#define X86_FEATURE_DSCPL (4*32+ 4) /* CPL Qualified Debug Store */
+-#define X86_FEATURE_EST (4*32+ 7) /* Enhanced SpeedStep */
+-#define X86_FEATURE_TM2 (4*32+ 8) /* Thermal Monitor 2 */
+-#define X86_FEATURE_CID (4*32+10) /* Context ID */
+-#define X86_FEATURE_CX16 (4*32+13) /* CMPXCHG16B */
+-#define X86_FEATURE_XTPR (4*32+14) /* Send Task Priority Messages */
+-
+-/* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
+-#define X86_FEATURE_XSTORE (5*32+ 2) /* on-CPU RNG present (xstore insn) */
+-#define X86_FEATURE_XSTORE_EN (5*32+ 3) /* on-CPU RNG enabled */
+-#define X86_FEATURE_XCRYPT (5*32+ 6) /* on-CPU crypto (xcrypt insn) */
+-#define X86_FEATURE_XCRYPT_EN (5*32+ 7) /* on-CPU crypto enabled */
+-
+-/* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */
+-#define X86_FEATURE_LAHF_LM (6*32+ 0) /* LAHF/SAHF in long mode */
+-#define X86_FEATURE_CMP_LEGACY (6*32+ 1) /* If yes HyperThreading not valid */
+-
+-#define cpu_has(c, bit) test_bit(bit, (c)->x86_capability)
+-#define boot_cpu_has(bit) test_bit(bit, boot_cpu_data.x86_capability)
+-
+-#define cpu_has_fpu 1
++#undef cpu_has_vme
+ #define cpu_has_vme 0
+-#define cpu_has_de 1
+-#define cpu_has_pse 1
+-#define cpu_has_tsc 1
++
++#undef cpu_has_pae
+ #define cpu_has_pae ___BUG___
+-#define cpu_has_pge 1
+-#define cpu_has_apic boot_cpu_has(X86_FEATURE_APIC)
+-#define cpu_has_mtrr 1
+-#define cpu_has_mmx 1
+-#define cpu_has_fxsr 1
+-#define cpu_has_xmm 1
+-#define cpu_has_xmm2 1
+-#define cpu_has_xmm3 boot_cpu_has(X86_FEATURE_XMM3)
+-#define cpu_has_ht boot_cpu_has(X86_FEATURE_HT)
++
++#undef cpu_has_mp
+ #define cpu_has_mp 1 /* XXX */
++
++#undef cpu_has_k6_mtrr
+ #define cpu_has_k6_mtrr 0
++
++#undef cpu_has_cyrix_arr
+ #define cpu_has_cyrix_arr 0
++
++#undef cpu_has_centaur_mcr
+ #define cpu_has_centaur_mcr 0
+-#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH)
+-#define cpu_has_ds boot_cpu_has(X86_FEATURE_DS)
+-#define cpu_has_pebs boot_cpu_has(X86_FEATURE_PEBS)
+-#define cpu_has_bts boot_cpu_has(X86_FEATURE_BTS)
+
+ #endif /* __ASM_X8664_CPUFEATURE_H */
+diff -puN include/asm-x86_64/e820.h~git-newsetup include/asm-x86_64/e820.h
+--- a/include/asm-x86_64/e820.h~git-newsetup
++++ a/include/asm-x86_64/e820.h
+@@ -11,7 +11,9 @@
+ #ifndef __E820_HEADER
+ #define __E820_HEADER
+
+-#include <linux/mmzone.h>
++#ifndef _SETUP
++# include <linux/mmzone.h>
++#endif
+
+ #define E820MAP 0x2d0 /* our map */
+ #define E820MAX 128 /* number of entries in E820MAP */
+@@ -30,7 +32,7 @@ struct e820entry {
+ } __attribute__((packed));
+
+ struct e820map {
+- int nr_map;
++ u32 nr_map;
+ struct e820entry map[E820MAX];
+ };
+
+diff -puN include/asm-x86_64/processor.h~git-newsetup include/asm-x86_64/processor.h
+--- a/include/asm-x86_64/processor.h~git-newsetup
++++ a/include/asm-x86_64/processor.h
+@@ -99,6 +99,7 @@ extern char ignore_irq13;
+
+ extern void identify_cpu(struct cpuinfo_x86 *);
+ extern void print_cpu_info(struct cpuinfo_x86 *);
++extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
+ extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
+ extern unsigned short num_cache_leaves;
+
+@@ -367,8 +368,6 @@ static inline void sync_core(void)
+ asm volatile("cpuid" : "=a" (tmp) : "0" (1) : "ebx","ecx","edx","memory");
+ }
+
+-#define cpu_has_fpu 1
+-
+ #define ARCH_HAS_PREFETCH
+ static inline void prefetch(void *x)
+ {
+diff -puN /dev/null include/asm-x86_64/required-features.h
+--- /dev/null
++++ a/include/asm-x86_64/required-features.h
+@@ -0,0 +1,46 @@
++#ifndef _ASM_REQUIRED_FEATURES_H
++#define _ASM_REQUIRED_FEATURES_H 1
++
++/* Define minimum CPUID feature set for kernel These bits are checked
++ really early to actually display a visible error message before the
++ kernel dies. Make sure to assign features to the proper mask!
++
++ The real information is in arch/x86_64/Kconfig.cpu, this just converts
++ the CONFIGs into a bitmask */
++
++/* x86-64 baseline features */
++#define NEED_FPU (1<<(X86_FEATURE_FPU & 31))
++#define NEED_PSE (1<<(X86_FEATURE_PSE & 31))
++#define NEED_MSR (1<<(X86_FEATURE_MSR & 31))
++#define NEED_PAE (1<<(X86_FEATURE_PAE & 31))
++#define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31))
++#define NEED_PGE (1<<(X86_FEATURE_PGE & 31))
++#define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31))
++#define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31))
++#define NEED_XMM (1<<(X86_FEATURE_XMM & 31))
++#define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31))
++
++#define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\
++ NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\
++ NEED_XMM|NEED_XMM2)
++#define SSE_MASK (NEED_XMM|NEED_XMM2)
++
++/* x86-64 baseline features */
++#define NEED_LM (1<<(X86_FEATURE_LM & 31))
++
++#ifdef CONFIG_X86_USE_3DNOW
++# define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31))
++#else
++# define NEED_3DNOW 0
++#endif
++
++#define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW)
++
++#define REQUIRED_MASK2 0
++#define REQUIRED_MASK3 0
++#define REQUIRED_MASK4 0
++#define REQUIRED_MASK5 0
++#define REQUIRED_MASK6 0
++#define REQUIRED_MASK7 0
++
++#endif
+diff -puN include/asm-x86_64/segment.h~git-newsetup include/asm-x86_64/segment.h
+--- a/include/asm-x86_64/segment.h~git-newsetup
++++ a/include/asm-x86_64/segment.h
+@@ -3,6 +3,14 @@
+
+ #include <asm/cache.h>
+
++/* Simple and small GDT entries for booting only */
++
++#define GDT_ENTRY_BOOT_CS 2
++#define __BOOT_CS (GDT_ENTRY_BOOT_CS * 8)
++
++#define GDT_ENTRY_BOOT_DS (GDT_ENTRY_BOOT_CS + 1)
++#define __BOOT_DS (GDT_ENTRY_BOOT_DS * 8)
++
+ #define __KERNEL_CS 0x10
+ #define __KERNEL_DS 0x18
+
+diff -puN include/linux/edd.h~git-newsetup include/linux/edd.h
+--- a/include/linux/edd.h~git-newsetup
++++ a/include/linux/edd.h
+@@ -49,10 +49,6 @@
+ #define EDD_MBR_SIG_MAX 16 /* max number of signatures to store */
+ #define EDD_MBR_SIG_NR_BUF 0x1ea /* addr of number of MBR signtaures at EDD_MBR_SIG_BUF
+ in boot_params - treat this as 1 byte */
+-#define EDD_CL_EQUALS 0x3d646465 /* "edd=" */
+-#define EDD_CL_OFF 0x666f /* "of" for off */
+-#define EDD_CL_SKIP 0x6b73 /* "sk" for skipmbr */
+-#define EDD_CL_ON 0x6e6f /* "on" for on */
+
+ #ifndef __ASSEMBLY__
+
+diff -puN include/linux/screen_info.h~git-newsetup include/linux/screen_info.h
+--- a/include/linux/screen_info.h~git-newsetup
++++ a/include/linux/screen_info.h
+@@ -10,7 +10,7 @@
+ struct screen_info {
+ u8 orig_x; /* 0x00 */
+ u8 orig_y; /* 0x01 */
+- u16 dontuse1; /* 0x02 -- EXT_MEM_K sits here */
++ u16 ext_mem_k; /* 0x02 */
+ u16 orig_video_page; /* 0x04 */
+ u8 orig_video_mode; /* 0x06 */
+ u8 orig_video_cols; /* 0x07 */
+@@ -27,7 +27,7 @@ struct screen_info {
+ u16 lfb_depth; /* 0x16 */
+ u32 lfb_base; /* 0x18 */
+ u32 lfb_size; /* 0x1c */
+- u16 dontuse2, dontuse3; /* 0x20 -- CL_MAGIC and CL_OFFSET here */
++ u16 cl_magic, cl_offset; /* 0x20 */
+ u16 lfb_linelength; /* 0x24 */
+ u8 red_size; /* 0x26 */
+ u8 red_pos; /* 0x27 */
+@@ -42,9 +42,8 @@ struct screen_info {
+ u16 pages; /* 0x32 */
+ u16 vesa_attributes; /* 0x34 */
+ u32 capabilities; /* 0x36 */
+- /* 0x3a -- 0x3b reserved for future expansion */
+- /* 0x3c -- 0x3f micro stack for relocatable kernels */
+-};
++ u8 _reserved[6]; /* 0x3a */
++} __attribute__((packed));
+
+ extern struct screen_info screen_info;
+
+_
--- /dev/null
+From: Andrew Morton <akpm@linux-foundation.org>
+
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+---
+
+ arch/i386/kernel/cpu/Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff -puN arch/i386/kernel/cpu/Makefile~git-newsetup-fixup arch/i386/kernel/cpu/Makefile
+--- a/arch/i386/kernel/cpu/Makefile~git-newsetup-fixup
++++ a/arch/i386/kernel/cpu/Makefile
+@@ -8,7 +8,7 @@ obj-y += amd.o
+ obj-y += cyrix.o
+ obj-y += centaur.o
+ obj-y += transmeta.o
+-obj-y += intel.o intel_cacheinfo.o
++obj-y += intel.o intel_cacheinfo.o addon_cpuid_features.o
+ obj-y += rise.o
+ obj-y += nexgen.o
+ obj-y += umc.o
+
+_
--- /dev/null
+From: Ivo van Doorn <ivdoorn@gmail.com>
+Date: Fri, 11 May 2007 19:59:40 +0000 (-0400)
+Subject: [PATCH] Add 93cx6 eeprom library
+X-Git-Tag: v2.6.23-rc1~1201^2~74
+X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=9467d64b0e88763914c01f71ddf591b166c4f526
+
+[PATCH] Add 93cx6 eeprom library
+
+This patch adds a library for reading from 93cx6 eeproms.
+
+Signed-off-by: Michael Wu <flamingice@sourmilk.net>
+Signed-off-by: John W. Linville <linville@tuxdriver.com>
+---
+
+diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
+index 616eee9..bd601ef 100644
+--- a/drivers/misc/Kconfig
++++ b/drivers/misc/Kconfig
+@@ -34,6 +34,11 @@ config PHANTOM
+ If you choose to build module, its name will be phantom. If unsure,
+ say N here.
+
++config EEPROM_93CX6
++ tristate "EEPROM 93CX6 support"
++ ---help---
++ This is a driver for the EEPROM chipsets 93c46 and 93c66.
++ The driver supports both read as well as write commands.
+
+ If unsure, say N.
+
+@@ -187,5 +192,4 @@ config THINKPAD_ACPI_BAY
+
+ If you are not sure, say Y here.
+
+-
+ endmenu
+diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
+index 8abbf2f..b5ce0e3 100644
+--- a/drivers/misc/Makefile
++++ b/drivers/misc/Makefile
+@@ -14,3 +14,4 @@ obj-$(CONFIG_PHANTOM) += phantom.o
+ obj-$(CONFIG_SGI_IOC4) += ioc4.o
+ obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o
+ obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o
++obj-$(CONFIG_EEPROM_93CX6) += eeprom_93cx6.o
+diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
+new file mode 100644
+index 0000000..bfcb434
+--- /dev/null
++++ b/drivers/misc/eeprom_93cx6.c
+@@ -0,0 +1,229 @@
++/*
++ Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
++ <http://rt2x00.serialmonkey.com>
++
++ This program is free software; you can redistribute it and/or modify
++ it under the terms of the GNU General Public License as published by
++ the Free Software Foundation; either version 2 of the License, or
++ (at your option) any later version.
++
++ This program is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ GNU General Public License for more details.
++
++ You should have received a copy of the GNU General Public License
++ along with this program; if not, write to the
++ Free Software Foundation, Inc.,
++ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ */
++
++/*
++ Module: eeprom_93cx6
++ Abstract: EEPROM reader routines for 93cx6 chipsets.
++ Supported chipsets: 93c46 & 93c66.
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/version.h>
++#include <linux/delay.h>
++#include <linux/eeprom_93cx6.h>
++
++MODULE_AUTHOR("http://rt2x00.serialmonkey.com");
++MODULE_VERSION("1.0");
++MODULE_DESCRIPTION("EEPROM 93cx6 chip driver");
++MODULE_LICENSE("GPL");
++
++static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
++{
++ eeprom->reg_data_clock = 1;
++ eeprom->register_write(eeprom);
++ udelay(1);
++}
++
++static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
++{
++ eeprom->reg_data_clock = 0;
++ eeprom->register_write(eeprom);
++ udelay(1);
++}
++
++static void eeprom_93cx6_startup(struct eeprom_93cx6 *eeprom)
++{
++ /*
++ * Clear all flags, and enable chip select.
++ */
++ eeprom->register_read(eeprom);
++ eeprom->reg_data_in = 0;
++ eeprom->reg_data_out = 0;
++ eeprom->reg_data_clock = 0;
++ eeprom->reg_chip_select = 1;
++ eeprom->register_write(eeprom);
++
++ /*
++ * kick a pulse.
++ */
++ eeprom_93cx6_pulse_high(eeprom);
++ eeprom_93cx6_pulse_low(eeprom);
++}
++
++static void eeprom_93cx6_cleanup(struct eeprom_93cx6 *eeprom)
++{
++ /*
++ * Clear chip_select and data_in flags.
++ */
++ eeprom->register_read(eeprom);
++ eeprom->reg_data_in = 0;
++ eeprom->reg_chip_select = 0;
++ eeprom->register_write(eeprom);
++
++ /*
++ * kick a pulse.
++ */
++ eeprom_93cx6_pulse_high(eeprom);
++ eeprom_93cx6_pulse_low(eeprom);
++}
++
++static void eeprom_93cx6_write_bits(struct eeprom_93cx6 *eeprom,
++ const u16 data, const u16 count)
++{
++ unsigned int i;
++
++ eeprom->register_read(eeprom);
++
++ /*
++ * Clear data flags.
++ */
++ eeprom->reg_data_in = 0;
++ eeprom->reg_data_out = 0;
++
++ /*
++ * Start writing all bits.
++ */
++ for (i = count; i > 0; i--) {
++ /*
++ * Check if this bit needs to be set.
++ */
++ eeprom->reg_data_in = !!(data & (1 << (i - 1)));
++
++ /*
++ * Write the bit to the eeprom register.
++ */
++ eeprom->register_write(eeprom);
++
++ /*
++ * Kick a pulse.
++ */
++ eeprom_93cx6_pulse_high(eeprom);
++ eeprom_93cx6_pulse_low(eeprom);
++ }
++
++ eeprom->reg_data_in = 0;
++ eeprom->register_write(eeprom);
++}
++
++static void eeprom_93cx6_read_bits(struct eeprom_93cx6 *eeprom,
++ u16 *data, const u16 count)
++{
++ unsigned int i;
++ u16 buf = 0;
++
++ eeprom->register_read(eeprom);
++
++ /*
++ * Clear data flags.
++ */
++ eeprom->reg_data_in = 0;
++ eeprom->reg_data_out = 0;
++
++ /*
++ * Start reading all bits.
++ */
++ for (i = count; i > 0; i--) {
++ eeprom_93cx6_pulse_high(eeprom);
++
++ eeprom->register_read(eeprom);
++
++ /*
++ * Clear data_in flag.
++ */
++ eeprom->reg_data_in = 0;
++
++ /*
++ * Read if the bit has been set.
++ */
++ if (eeprom->reg_data_out)
++ buf |= (1 << (i - 1));
++
++ eeprom_93cx6_pulse_low(eeprom);
++ }
++
++ *data = buf;
++}
++
++/**
++ * eeprom_93cx6_read - Read multiple words from eeprom
++ * @eeprom: Pointer to eeprom structure
++ * @word: Word index from where we should start reading
++ * @data: target pointer where the information will have to be stored
++ *
++ * This function will read the eeprom data as host-endian word
++ * into the given data pointer.
++ */
++void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom, const u8 word,
++ u16 *data)
++{
++ u16 command;
++
++ /*
++ * Initialize the eeprom register
++ */
++ eeprom_93cx6_startup(eeprom);
++
++ /*
++ * Select the read opcode and the word to be read.
++ */
++ command = (PCI_EEPROM_READ_OPCODE << eeprom->width) | word;
++ eeprom_93cx6_write_bits(eeprom, command,
++ PCI_EEPROM_WIDTH_OPCODE + eeprom->width);
++
++ /*
++ * Read the requested 16 bits.
++ */
++ eeprom_93cx6_read_bits(eeprom, data, 16);
++
++ /*
++ * Cleanup eeprom register.
++ */
++ eeprom_93cx6_cleanup(eeprom);
++}
++EXPORT_SYMBOL_GPL(eeprom_93cx6_read);
++
++/**
++ * eeprom_93cx6_multiread - Read multiple words from eeprom
++ * @eeprom: Pointer to eeprom structure
++ * @word: Word index from where we should start reading
++ * @data: target pointer where the information will have to be stored
++ * @words: Number of words that should be read.
++ *
++ * This function will read all requested words from the eeprom,
++ * this is done by calling eeprom_93cx6_read() multiple times.
++ * But with the additional change that while the eeprom_93cx6_read
++ * will return host ordered bytes, this method will return little
++ * endian words.
++ */
++void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom, const u8 word,
++ __le16 *data, const u16 words)
++{
++ unsigned int i;
++ u16 tmp;
++
++ for (i = 0; i < words; i++) {
++ tmp = 0;
++ eeprom_93cx6_read(eeprom, word + i, &tmp);
++ data[i] = cpu_to_le16(tmp);
++ }
++}
++EXPORT_SYMBOL_GPL(eeprom_93cx6_multiread);
++
+diff --git a/include/linux/eeprom_93cx6.h b/include/linux/eeprom_93cx6.h
+new file mode 100644
+index 0000000..d774b77
+--- /dev/null
++++ b/include/linux/eeprom_93cx6.h
+@@ -0,0 +1,72 @@
++/*
++ Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
++ <http://rt2x00.serialmonkey.com>
++
++ This program is free software; you can redistribute it and/or modify
++ it under the terms of the GNU General Public License as published by
++ the Free Software Foundation; either version 2 of the License, or
++ (at your option) any later version.
++
++ This program is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ GNU General Public License for more details.
++
++ You should have received a copy of the GNU General Public License
++ along with this program; if not, write to the
++ Free Software Foundation, Inc.,
++ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ */
++
++/*
++ Module: eeprom_93cx6
++ Abstract: EEPROM reader datastructures for 93cx6 chipsets.
++ Supported chipsets: 93c46 & 93c66.
++ */
++
++/*
++ * EEPROM operation defines.
++ */
++#define PCI_EEPROM_WIDTH_93C46 6
++#define PCI_EEPROM_WIDTH_93C66 8
++#define PCI_EEPROM_WIDTH_OPCODE 3
++#define PCI_EEPROM_WRITE_OPCODE 0x05
++#define PCI_EEPROM_READ_OPCODE 0x06
++#define PCI_EEPROM_EWDS_OPCODE 0x10
++#define PCI_EEPROM_EWEN_OPCODE 0x13
++
++/**
++ * struct eeprom_93cx6 - control structure for setting the commands
++ * for reading the eeprom data.
++ * @data: private pointer for the driver.
++ * @register_read(struct eeprom_93cx6 *eeprom): handler to
++ * read the eeprom register, this function should set all reg_* fields.
++ * @register_write(struct eeprom_93cx6 *eeprom): handler to
++ * write to the eeprom register by using all reg_* fields.
++ * @width: eeprom width, should be one of the PCI_EEPROM_WIDTH_* defines
++ * @reg_data_in: register field to indicate data input
++ * @reg_data_out: register field to indicate data output
++ * @reg_data_clock: register field to set the data clock
++ * @reg_chip_select: register field to set the chip select
++ *
++ * This structure is used for the communication between the driver
++ * and the eeprom_93cx6 handlers for reading the eeprom.
++ */
++struct eeprom_93cx6 {
++ void *data;
++
++ void (*register_read)(struct eeprom_93cx6 *eeprom);
++ void (*register_write)(struct eeprom_93cx6 *eeprom);
++
++ int width;
++
++ char reg_data_in;
++ char reg_data_out;
++ char reg_data_clock;
++ char reg_chip_select;
++};
++
++extern void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom,
++ const u8 word, u16 *data);
++extern void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom,
++ const u8 word, __le16 *data, const u16 words);
+From: Ivo van Doorn <ivdoorn@gmail.com>
+Date: Mon, 14 May 2007 21:06:01 +0000 (+0200)
+Subject: [PATCH] eeprom_93cx6: Add comment for 1us delay after pulse
+X-Git-Tag: v2.6.23-rc1~1201^2~73
+X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=4b914dc0493edff19ff698a18198a173a14ba9d2
+
+[PATCH] eeprom_93cx6: Add comment for 1us delay after pulse
+
+This will add a comment for the 1us delay which is taken
+after the pulse has been switched. The 1us delay is based
+on the specifications so that should be made clear.
+
+Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
+Signed-off-by: John W. Linville <linville@tuxdriver.com>
+---
+
+diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
+index bfcb434..0d6d742 100644
+--- a/drivers/misc/eeprom_93cx6.c
++++ b/drivers/misc/eeprom_93cx6.c
+@@ -39,6 +39,12 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
+ {
+ eeprom->reg_data_clock = 1;
+ eeprom->register_write(eeprom);
++
++ /*
++ * Add a short delay for the pulse to work.
++ * According to the specifications the minimal time
++ * should be 450ns so a 1us delay is sufficient.
++ */
+ udelay(1);
+ }
+
+@@ -46,6 +52,12 @@ static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
+ {
+ eeprom->reg_data_clock = 0;
+ eeprom->register_write(eeprom);
++
++ /*
++ * Add a short delay for the pulse to work.
++ * According to the specifications the minimal time
++ * should be 450ns so a 1us delay is sufficient.
++ */
+ udelay(1);
+ }
+
+From: John W. Linville <linville@tuxdriver.com>
+Date: Tue, 12 Jun 2007 01:37:46 +0000 (-0400)
+Subject: [PATCH] eeprom_93cx6: shorten pulse timing to match spec
+X-Git-Tag: v2.6.23-rc1~1201^2~71
+X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=7e9400f178d291b2208c4ed9aac0f425c1364000
+
+[PATCH] eeprom_93cx6: shorten pulse timing to match spec
+
+93cx6 datasheet available here:
+
+ http://ww1.microchip.com/downloads/en/DeviceDoc/21749F.pdf
+
+Figure 1-1 and Table 1-2 on pages 4-5 indicate that both Clock High
+Time and Clock Low Time have largest minimum times of 450ns.
+
+Signed-off-by: John W. Linville <linville@tuxdriver.com>
+---
+
+diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
+index 0d6d742..ac515b0 100644
+--- a/drivers/misc/eeprom_93cx6.c
++++ b/drivers/misc/eeprom_93cx6.c
+@@ -42,10 +42,10 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
+
+ /*
+ * Add a short delay for the pulse to work.
+- * According to the specifications the minimal time
+- * should be 450ns so a 1us delay is sufficient.
++ * According to the specifications the "maximum minimum"
++ * time should be 450ns.
+ */
+- udelay(1);
++ ndelay(450);
+ }
+
+ static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
+From: Francois Romieu <romieu@fr.zoreil.com>
+Date: Tue, 3 Jul 2007 22:31:44 +0000 (+0200)
+Subject: eeprom_93cx6: shorten pulse timing to match spec (bis)
+X-Git-Tag: v2.6.23-rc1~1151^2~11
+X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=8abd531e3f77188de2fc41e677d075cc66e61631
+
+eeprom_93cx6: shorten pulse timing to match spec (bis)
+
+Based on an original idea by John W. Linville.
+
+It is the missing part of 42d45ccd60636c28e35c2016f091783bc14ad99c
+
+Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
+Signed-off-by: Jeff Garzik <jeff@garzik.org>
+---
+
+diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
+index ac515b0..ea55654 100644
+--- a/drivers/misc/eeprom_93cx6.c
++++ b/drivers/misc/eeprom_93cx6.c
+@@ -55,10 +55,10 @@ static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
+
+ /*
+ * Add a short delay for the pulse to work.
+- * According to the specifications the minimal time
+- * should be 450ns so a 1us delay is sufficient.
++ * According to the specifications the "maximum minimum"
++ * time should be 450ns.
+ */
+- udelay(1);
++ ndelay(450);
+ }
+
+ static void eeprom_93cx6_startup(struct eeprom_93cx6 *eeprom)
projects / openwrt / staging / jow.git / commitdiff