From d7e269cfbdd5fe0bbc0961bcf89845484bf28de7 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Tue, 14 Jan 2014 14:21:52 +0100 Subject: [PATCH] zynq: Add support for U-BOOT SPL SPL is using ps7_init.c/h files which are generated from design tools which have to be copied to boards/xilinx/zynq folder before compilation. BSS section is moved to SDRAM because fat support requires more space than SRAM size. Added: - MMC and QSPI support - Boot OS directly from SPL - Enable SPL command Signed-off-by: Michal Simek Reviewed-by: Tom Rini --- arch/arm/cpu/armv7/zynq/Makefile | 1 + arch/arm/cpu/armv7/zynq/cpu.c | 4 +- arch/arm/cpu/armv7/zynq/spl.c | 69 +++++++++++++++++++++++ arch/arm/cpu/armv7/zynq/u-boot-spl.lds | 61 ++++++++++++++++++++ arch/arm/include/asm/arch-zynq/spl.h | 18 ++++++ board/xilinx/zynq/Makefile | 1 + board/xilinx/zynq/ps7_init.c | 12 ++++ include/configs/zynq-common.h | 77 ++++++++++++++++++++++++++ 8 files changed, 241 insertions(+), 2 deletions(-) create mode 100644 arch/arm/cpu/armv7/zynq/spl.c create mode 100644 arch/arm/cpu/armv7/zynq/u-boot-spl.lds create mode 100644 arch/arm/include/asm/arch-zynq/spl.h create mode 100644 board/xilinx/zynq/ps7_init.c diff --git a/arch/arm/cpu/armv7/zynq/Makefile b/arch/arm/cpu/armv7/zynq/Makefile index 3374789905..3363a3c71b 100644 --- a/arch/arm/cpu/armv7/zynq/Makefile +++ b/arch/arm/cpu/armv7/zynq/Makefile @@ -13,3 +13,4 @@ obj-y += cpu.o obj-y += ddrc.o obj-y += slcr.o obj-y += clk.o +obj-$(CONFIG_SPL_BUILD) += spl.o diff --git a/arch/arm/cpu/armv7/zynq/cpu.c b/arch/arm/cpu/armv7/zynq/cpu.c index 5d505dd486..7626b5c1a3 100644 --- a/arch/arm/cpu/armv7/zynq/cpu.c +++ b/arch/arm/cpu/armv7/zynq/cpu.c @@ -17,7 +17,7 @@ void lowlevel_init(void) int arch_cpu_init(void) { zynq_slcr_unlock(); - +#ifndef CONFIG_SPL_BUILD /* Device config APB, unlock the PCAP */ writel(0x757BDF0D, &devcfg_base->unlock); writel(0xFFFFFFFF, &devcfg_base->rom_shadow); @@ -35,7 +35,7 @@ int arch_cpu_init(void) /* Urgent write, ports S2/S3 */ writel(0xC, &slcr_base->ddr_urgent); #endif - +#endif zynq_clk_early_init(); zynq_slcr_lock(); diff --git a/arch/arm/cpu/armv7/zynq/spl.c b/arch/arm/cpu/armv7/zynq/spl.c new file mode 100644 index 0000000000..fcad762c03 --- /dev/null +++ b/arch/arm/cpu/armv7/zynq/spl.c @@ -0,0 +1,69 @@ +/* + * (C) Copyright 2014 Xilinx, Inc. Michal Simek + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include +#include + +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +void board_init_f(ulong dummy) +{ + ps7_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + /* Set global data pointer. */ + gd = &gdata; + + preloader_console_init(); + arch_cpu_init(); + board_init_r(NULL, 0); +} + +u32 spl_boot_device(void) +{ + u32 mode; + + switch ((zynq_slcr_get_boot_mode()) & ZYNQ_BM_MASK) { +#ifdef CONFIG_SPL_SPI_SUPPORT + case ZYNQ_BM_QSPI: + puts("qspi boot\n"); + mode = BOOT_DEVICE_SPI; + break; +#endif +#ifdef CONFIG_SPL_MMC_SUPPORT + case ZYNQ_BM_SD: + puts("mmc boot\n"); + mode = BOOT_DEVICE_MMC1; + break; +#endif + default: + puts("Unsupported boot mode selected\n"); + hang(); + } + + return mode; +} + +#ifdef CONFIG_SPL_MMC_SUPPORT +u32 spl_boot_mode(void) +{ + return MMCSD_MODE_FAT; +} +#endif + +#ifdef CONFIG_SPL_OS_BOOT +int spl_start_uboot(void) +{ + /* boot linux */ + return 0; +} +#endif diff --git a/arch/arm/cpu/armv7/zynq/u-boot-spl.lds b/arch/arm/cpu/armv7/zynq/u-boot-spl.lds new file mode 100644 index 0000000000..0c4501e5c7 --- /dev/null +++ b/arch/arm/cpu/armv7/zynq/u-boot-spl.lds @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2014 Xilinx, Inc. Michal Simek + * Copyright (c) 2004-2008 Texas Instruments + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +MEMORY { .sram : ORIGIN = CONFIG_SPL_TEXT_BASE,\ + LENGTH = CONFIG_SPL_MAX_SIZE } +MEMORY { .sdram : ORIGIN = CONFIG_SPL_BSS_START_ADDR, \ + LENGTH = CONFIG_SPL_BSS_MAX_SIZE } + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = ALIGN(4); + .text : + { + __image_copy_start = .; + CPUDIR/start.o (.text*) + *(.text*) + } > .sram + + . = ALIGN(4); + .rodata : { + *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) + } > .sram + + . = ALIGN(4); + .data : { + *(.data*) + } > .sram + + . = ALIGN(4); + + . = .; + + __image_copy_end = .; + + _end = .; + + /* Move BSS section to RAM because of FAT */ + .bss (NOLOAD) : { + __bss_start = .; + *(.bss*) + . = ALIGN(4); + __bss_end = .; + } > .sdram + + /DISCARD/ : { *(.dynsym) } + /DISCARD/ : { *(.dynstr*) } + /DISCARD/ : { *(.dynamic*) } + /DISCARD/ : { *(.plt*) } + /DISCARD/ : { *(.interp*) } + /DISCARD/ : { *(.gnu*) } +} diff --git a/arch/arm/include/asm/arch-zynq/spl.h b/arch/arm/include/asm/arch-zynq/spl.h new file mode 100644 index 0000000000..5789d28bb3 --- /dev/null +++ b/arch/arm/include/asm/arch-zynq/spl.h @@ -0,0 +1,18 @@ +/* + * (C) Copyright 2014 Xilinx, Inc. Michal Simek + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef _ASM_ARCH_SPL_H_ +#define _ASM_ARCH_SPL_H_ + +extern void ps7_init(void); + +#define BOOT_DEVICE_NONE 0 +#define BOOT_DEVICE_RAM 1 +#define BOOT_DEVICE_SPI 2 +#define BOOT_DEVICE_MMC1 3 +#define BOOT_DEVICE_MMC2 4 +#define BOOT_DEVICE_MMC2_2 5 + +#endif diff --git a/board/xilinx/zynq/Makefile b/board/xilinx/zynq/Makefile index 6301a8c149..3f19a1cd8b 100644 --- a/board/xilinx/zynq/Makefile +++ b/board/xilinx/zynq/Makefile @@ -6,3 +6,4 @@ # obj-y := board.o +obj-$(CONFIG_SPL_BUILD) += ps7_init.o diff --git a/board/xilinx/zynq/ps7_init.c b/board/xilinx/zynq/ps7_init.c new file mode 100644 index 0000000000..c47da09b9e --- /dev/null +++ b/board/xilinx/zynq/ps7_init.c @@ -0,0 +1,12 @@ +/* + * (C) Copyright 2014 Xilinx, Inc. Michal Simek + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include +#include + +__weak void ps7_init(void) +{ + puts("Please copy ps7_init.c/h from hw project\n"); +} diff --git a/include/configs/zynq-common.h b/include/configs/zynq-common.h index d6dc74581e..c7eee0abe5 100644 --- a/include/configs/zynq-common.h +++ b/include/configs/zynq-common.h @@ -228,4 +228,81 @@ #define CONFIG_CMD_MII #define CONFIG_CMD_TFTPPUT +/* SPL part */ +#define CONFIG_SPL +#define CONFIG_CMD_SPL +#define CONFIG_SPL_FRAMEWORK +#define CONFIG_SPL_LIBCOMMON_SUPPORT +#define CONFIG_SPL_LIBGENERIC_SUPPORT +#define CONFIG_SPL_SERIAL_SUPPORT + +#define CONFIG_SPL_LDSCRIPT "arch/arm/cpu/armv7/zynq/u-boot-spl.lds" + +/* Disable dcache for SPL just for sure */ +#ifdef CONFIG_SPL_BUILD +#define CONFIG_SYS_DCACHE_OFF +#undef CONFIG_FPGA +#endif + +/* MMC support */ +#ifdef CONFIG_ZYNQ_SDHCI0 +#define CONFIG_SPL_MMC_SUPPORT +#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x300 /* address 0x60000 */ +#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 0x200 /* 256 KB */ +#define CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 1 +#define CONFIG_SPL_LIBDISK_SUPPORT +#define CONFIG_SPL_FAT_SUPPORT +#define CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME "u-boot.img" +#endif + +/* Address in RAM where the parameters must be copied by SPL. */ +#define CONFIG_SYS_SPL_ARGS_ADDR 0x10000000 + +#define CONFIG_SPL_FAT_LOAD_ARGS_NAME "system.dtb" +#define CONFIG_SPL_FAT_LOAD_KERNEL_NAME "uImage" + +/* Not using MMC raw mode - just for compilation purpose */ +#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0 +#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 0 +#define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0 + +/* qspi mode is working fine */ +#ifdef CONFIG_ZYNQ_QSPI +#define CONFIG_SPL_SPI_SUPPORT +#define CONFIG_SPL_SPI_LOAD +#define CONFIG_SPL_SPI_FLASH_SUPPORT +#define CONFIG_SPL_SPI_BUS 0 +#define CONFIG_SYS_SPI_U_BOOT_OFFS 0x100000 +#define CONFIG_SPL_SPI_CS 0 +#endif + +/* for booting directly linux */ +#define CONFIG_SPL_OS_BOOT + +/* SP location before relocation, must use scratch RAM */ +#define CONFIG_SPL_TEXT_BASE 0x0 + +/* 3 * 64kB blocks of OCM - one is on the top because of bootrom */ +#define CONFIG_SPL_MAX_SIZE 0x30000 + +/* The highest 64k OCM address */ +#define OCM_HIGH_ADDR 0xffff0000 + +/* Just define any reasonable size */ +#define CONFIG_SPL_STACK_SIZE 0x1000 + +/* SPL stack position - and stack goes down */ +#define CONFIG_SPL_STACK (OCM_HIGH_ADDR + CONFIG_SPL_STACK_SIZE) + +/* On the top of OCM space */ +#define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_STACK + \ + GENERATED_GBL_DATA_SIZE) +#define CONFIG_SYS_SPL_MALLOC_SIZE 0x1000 + +/* BSS setup */ +#define CONFIG_SPL_BSS_START_ADDR 0x100000 +#define CONFIG_SPL_BSS_MAX_SIZE 0x100000 + +#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE + #endif /* __CONFIG_ZYNQ_COMMON_H */ -- 2.30.2