--- /dev/null
+#
+# Makefile for the LZMA compressed kernel loader for
+# Atheros AR7XXX/AR9XXX based boards
+#
+# Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
+#
+# Some parts of this file was based on the OpenWrt specific lzma-loader
+# for the BCM47xx and ADM5120 based boards:
+# Copyright (C) 2004 Manuel Novoa III (mjn3@codepoet.org)
+# Copyright (C) 2005 Mineharu Takahara <mtakahar@yahoo.com>
+# Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 as published
+# by the Free Software Foundation.
+#
+
+LOADADDR :=
+LZMA_TEXT_START := 0x81000000
+LOADER_DATA :=
+BOARD :=
+FLASH_OFFS :=
+FLASH_MAX :=
+PLATFORM :=
+
+CC := $(CROSS_COMPILE)gcc
+LD := $(CROSS_COMPILE)ld
+OBJCOPY := $(CROSS_COMPILE)objcopy
+OBJDUMP := $(CROSS_COMPILE)objdump
+
+BIN_FLAGS := -O binary -R .reginfo -R .note -R .comment -R .mdebug -S
+
+CFLAGS = -D__KERNEL__ -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
+ -fno-strict-aliasing -fno-common -fomit-frame-pointer -G 0 \
+ -mno-abicalls -fno-pic -ffunction-sections -pipe -mlong-calls \
+ -fno-common -ffreestanding -fhonour-copts \
+ -mabi=32 -march=mips32r2 \
+ -Wa,-32 -Wa,-march=mips32r2 -Wa,-mips32r2 -Wa,--trap \
+ -DCONFIG_CACHELINE_SIZE=32 -DKERNEL_ADDR=$(KERNEL_ADDR)
+
+ASFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+LDFLAGS = -static --gc-sections -no-warn-mismatch
+LDFLAGS += -e startup -T loader.lds -Ttext $(LZMA_TEXT_START)
+
+O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
+
+OBJECTS := head.o
+
+all: head.o loader.bin
+
+# Don't build dependencies, this may die if $(CC) isn't gcc
+dep:
+
+install:
+
+%.o : %.c
+ $(CC) $(CFLAGS) -c -o $@ $<
+
+%.o : %.S
+ $(CC) $(ASFLAGS) -c -o $@ $<
+
+loader: $(OBJECTS)
+ $(LD) $(LDFLAGS) -o $@ $(OBJECTS)
+
+loader.bin: loader
+ $(OBJCOPY) $(BIN_FLAGS) $< $@
+
+mrproper: clean
+
+clean:
+ rm -f loader *.elf *.bin *.o
--- /dev/null
+/*
+ * Cache operations for the cache instruction.
+ *
+ * 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.
+ *
+ * (C) Copyright 1996, 97, 99, 2002, 03 Ralf Baechle
+ * (C) Copyright 1999 Silicon Graphics, Inc.
+ */
+#ifndef __ASM_CACHEOPS_H
+#define __ASM_CACHEOPS_H
+
+/*
+ * Cache Operations available on all MIPS processors with R4000-style caches
+ */
+#define Index_Invalidate_I 0x00
+#define Index_Writeback_Inv_D 0x01
+#define Index_Load_Tag_I 0x04
+#define Index_Load_Tag_D 0x05
+#define Index_Store_Tag_I 0x08
+#define Index_Store_Tag_D 0x09
+#if defined(CONFIG_CPU_LOONGSON2)
+#define Hit_Invalidate_I 0x00
+#else
+#define Hit_Invalidate_I 0x10
+#endif
+#define Hit_Invalidate_D 0x11
+#define Hit_Writeback_Inv_D 0x15
+
+/*
+ * R4000-specific cacheops
+ */
+#define Create_Dirty_Excl_D 0x0d
+#define Fill 0x14
+#define Hit_Writeback_I 0x18
+#define Hit_Writeback_D 0x19
+
+/*
+ * R4000SC and R4400SC-specific cacheops
+ */
+#define Index_Invalidate_SI 0x02
+#define Index_Writeback_Inv_SD 0x03
+#define Index_Load_Tag_SI 0x06
+#define Index_Load_Tag_SD 0x07
+#define Index_Store_Tag_SI 0x0A
+#define Index_Store_Tag_SD 0x0B
+#define Create_Dirty_Excl_SD 0x0f
+#define Hit_Invalidate_SI 0x12
+#define Hit_Invalidate_SD 0x13
+#define Hit_Writeback_Inv_SD 0x17
+#define Hit_Writeback_SD 0x1b
+#define Hit_Set_Virtual_SI 0x1e
+#define Hit_Set_Virtual_SD 0x1f
+
+/*
+ * R5000-specific cacheops
+ */
+#define R5K_Page_Invalidate_S 0x17
+
+/*
+ * RM7000-specific cacheops
+ */
+#define Page_Invalidate_T 0x16
+
+/*
+ * R10000-specific cacheops
+ *
+ * Cacheops 0x02, 0x06, 0x0a, 0x0c-0x0e, 0x16, 0x1a and 0x1e are unused.
+ * Most of the _S cacheops are identical to the R4000SC _SD cacheops.
+ */
+#define Index_Writeback_Inv_S 0x03
+#define Index_Load_Tag_S 0x07
+#define Index_Store_Tag_S 0x0B
+#define Hit_Invalidate_S 0x13
+#define Cache_Barrier 0x14
+#define Hit_Writeback_Inv_S 0x17
+#define Index_Load_Data_I 0x18
+#define Index_Load_Data_D 0x19
+#define Index_Load_Data_S 0x1b
+#define Index_Store_Data_I 0x1c
+#define Index_Store_Data_D 0x1d
+#define Index_Store_Data_S 0x1f
+
+#endif /* __ASM_CACHEOPS_H */
--- /dev/null
+/*
+ * Copyright (C) 1994, 1995, 1996, 1997, 2000, 2001 by Ralf Baechle
+ *
+ * Copyright (C) 2001, Monta Vista Software
+ * Author: jsun@mvista.com or jsun@junsun.net
+ */
+#ifndef _cp0regdef_h_
+#define _cp0regdef_h_
+
+#define CP0_INDEX $0
+#define CP0_RANDOM $1
+#define CP0_ENTRYLO0 $2
+#define CP0_ENTRYLO1 $3
+#define CP0_CONTEXT $4
+#define CP0_PAGEMASK $5
+#define CP0_WIRED $6
+#define CP0_BADVADDR $8
+#define CP0_COUNT $9
+#define CP0_ENTRYHI $10
+#define CP0_COMPARE $11
+#define CP0_STATUS $12
+#define CP0_CAUSE $13
+#define CP0_EPC $14
+#define CP0_PRID $15
+#define CP0_CONFIG $16
+#define CP0_LLADDR $17
+#define CP0_WATCHLO $18
+#define CP0_WATCHHI $19
+#define CP0_XCONTEXT $20
+#define CP0_FRAMEMASK $21
+#define CP0_DIAGNOSTIC $22
+#define CP0_PERFORMANCE $25
+#define CP0_ECC $26
+#define CP0_CACHEERR $27
+#define CP0_TAGLO $28
+#define CP0_TAGHI $29
+#define CP0_ERROREPC $30
+
+#endif
--- /dev/null
+/*
+ * LZMA compressed kernel loader for Atheros AR7XXX/AR9XXX based boards
+ *
+ * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * Some parts of this code was based on the OpenWrt specific lzma-loader
+ * for the BCM47xx and ADM5120 based boards:
+ * Copyright (C) 2004 Manuel Novoa III (mjn3@codepoet.org)
+ * Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include "cp0regdef.h"
+#include "cacheops.h"
+
+#define KSEG0 0x80000000
+
+ .macro ehb
+ sll zero, 3
+ .endm
+
+ .macro reset
+ li t0, 0xbe000034
+ lw t1, 0(t0)
+ ori t1, 1
+ sw t1, 0(t0)
+ .endm
+
+ .text
+
+LEAF(startup)
+ .set noreorder
+ .set mips32
+
+ .fill 0x10000
+
+ mtc0 zero, CP0_WATCHLO # clear watch registers
+ mtc0 zero, CP0_WATCHHI
+ mtc0 zero, CP0_CAUSE # clear before writing status register
+
+ mfc0 t0, CP0_STATUS
+ li t1, 0x1000001f
+ or t0, t1
+ xori t0, 0x1f
+ mtc0 t0, CP0_STATUS
+ ehb
+
+ mtc0 zero, CP0_COUNT
+ mtc0 zero, CP0_COMPARE
+ ehb
+
+ la t0, __reloc_label # get linked address of label
+ bal __reloc_label # branch and link to label to
+ nop # get actual address
+__reloc_label:
+ subu t0, ra, t0 # get reloc_delta
+
+ /* Copy our code to the right place */
+ la t1, _code_start # get linked address of _code_start
+ la t2, _code_end # get linked address of _code_end
+
+ addu t4, t2, t0 # calculate actual address of _code_end
+ lw t5, 0(t4) # get extra data size
+
+ add t2, t5
+ add t2, 4
+
+ add t0, t1 # calculate actual address of _code_start
+
+__reloc_copy:
+ lw t3, 0(t0)
+ sw t3, 0(t1)
+ add t1, 4
+ blt t1, t2, __reloc_copy
+ add t0, 4
+
+ /* flush cache */
+ la t0, _code_start
+ la t1, _code_end
+
+ li t2, ~(CONFIG_CACHELINE_SIZE - 1)
+ and t0, t2
+ and t1, t2
+ li t2, CONFIG_CACHELINE_SIZE
+
+ b __flush_check
+ nop
+
+__flush_line:
+ cache Hit_Writeback_Inv_D, 0(t0)
+ cache Hit_Invalidate_I, 0(t0)
+ add t0, t2
+
+__flush_check:
+ bne t0, t1, __flush_line
+ nop
+
+ sync
+
+ la t0, __reloc_back
+ j t0
+ nop
+
+__reloc_back:
+ la t0, _code_end
+ add t0, 4
+
+ addu t1, t0, t5
+
+ li t2, KERNEL_ADDR
+
+__kernel_copy:
+ lw t3, 0(t0)
+ sw t3, 0(t2)
+ add t0, 4
+ blt t0, t1, __kernel_copy
+ add t2, 4
+
+ /* flush cache */
+ li t0, KERNEL_ADDR
+ addu t1, t0, t5
+
+ add t1, CONFIG_CACHELINE_SIZE - 1
+ li t2, ~(CONFIG_CACHELINE_SIZE - 1)
+ and t0, t2
+ and t1, t2
+ li t2, CONFIG_CACHELINE_SIZE
+
+ b __kernel_flush_check
+ nop
+
+__kernel_flush_line:
+ cache Hit_Writeback_Inv_D, 0(t0)
+ cache Hit_Invalidate_I, 0(t0)
+ add t0, t2
+
+__kernel_flush_check:
+ bne t0, t1, __kernel_flush_line
+ nop
+
+ sync
+
+ li t0, KERNEL_ADDR
+ jr t0
+ nop
+
+ .set reorder
+END(startup)
--- /dev/null
+OUTPUT_ARCH(mips)
+SECTIONS {
+ .text : {
+ _code_start = .;
+ *(.text)
+ *(.text.*)
+ *(.rodata)
+ *(.rodata.*)
+ *(.data)
+ *(.data.*)
+ }
+
+ . = ALIGN(32);
+
+ _code_end = .;
+}
projects / openwrt / staging / adrian.git / commitdiff