From 442a69c143759648f571e3784c7b3bc5be7ed595 Mon Sep 17 00:00:00 2001 From: Chia-Wei Wang Date: Wed, 1 Jun 2022 16:21:15 +0800 Subject: [PATCH] configs: ast2600: Move SPL bss section to DRAM space The commit b583348ca8c8 ("image: fit: Align hash output buffers") places the hash output buffer at the .bss section. However, AST2600 by default executes SPL in the NOR flash XIP way. This results in the hash output cannot be written to the buffer as it is located at the R/X only region. We need to move the .bss section out of the SPL body to the DRAM space, where hash output can be written to. This patch includes: - Define the .bss section base and size - A new SPL linker script is added with a separate .bss region specified - Enable CONFIG_SPL_SEPARATE_BSS kconfig option Signed-off-by: Chia-Wei Wang Reviewed-by: Neal Liu --- arch/arm/mach-aspeed/ast2600/u-boot-spl.lds | 94 +++++++++++++++++++++++++++++ configs/evb-ast2600_defconfig | 6 +- 2 files changed, 99 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-aspeed/ast2600/u-boot-spl.lds diff --git a/arch/arm/mach-aspeed/ast2600/u-boot-spl.lds b/arch/arm/mach-aspeed/ast2600/u-boot-spl.lds new file mode 100644 index 0000000..22b4e16 --- /dev/null +++ b/arch/arm/mach-aspeed/ast2600/u-boot-spl.lds @@ -0,0 +1,94 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) 2004-2008 Texas Instruments + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * (C) Copyright 2022 + * Chia-Wei Wang + */ + +MEMORY { .nor : ORIGIN = CONFIG_SPL_TEXT_BASE, + LENGTH = CONFIG_SPL_SIZE_LIMIT } +MEMORY { .bss : 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 +{ + . = 0x00000000; + + . = ALIGN(4); + .text : + { + __image_copy_start = .; + *(.vectors) + CPUDIR/start.o (.text*) + *(.text*) + *(.glue*) + } > .nor + + . = ALIGN(4); + .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } > .nor + + . = ALIGN(4); + .data : { + *(.data*) + } > .nor + + . = ALIGN(4); + .u_boot_list : { + KEEP(*(SORT(.u_boot_list*))); + } > .nor + + . = ALIGN(4); + .binman_sym_table : { + __binman_sym_start = .; + KEEP(*(SORT(.binman_sym*))); + __binman_sym_end = .; + } > .nor + + . = ALIGN(4); + + __image_copy_end = .; + + .rel.dyn : { + __rel_dyn_start = .; + *(.rel*) + __rel_dyn_end = .; + } > .nor + + .end : + { + *(.__end) + } > .nor + + _image_binary_end = .; + + .bss : { + __bss_start = .; + *(.bss*) + . = ALIGN(4); + __bss_end = .; + } > .bss + + __bss_size = __bss_end - __bss_start; +} + +#if defined(IMAGE_MAX_SIZE) +ASSERT(__image_copy_end - __image_copy_start <= (IMAGE_MAX_SIZE), \ + "SPL image too big"); +#endif + +#if defined(CONFIG_SPL_BSS_MAX_SIZE) +ASSERT(__bss_end - __bss_start <= (CONFIG_SPL_BSS_MAX_SIZE), \ + "SPL image BSS too big"); +#endif + +#if defined(CONFIG_SPL_MAX_FOOTPRINT) +ASSERT(__bss_end - _start <= (CONFIG_SPL_MAX_FOOTPRINT), \ + "SPL image plus BSS too big"); +#endif diff --git a/configs/evb-ast2600_defconfig b/configs/evb-ast2600_defconfig index bfd0a5f..a91a53d 100644 --- a/configs/evb-ast2600_defconfig +++ b/configs/evb-ast2600_defconfig @@ -1,6 +1,7 @@ CONFIG_ARM=y CONFIG_SYS_DCACHE_OFF=y CONFIG_SPL_SYS_THUMB_BUILD=y +CONFIG_SPL_LDSCRIPT="arch/arm/mach-aspeed/ast2600/u-boot-spl.lds" CONFIG_ARCH_ASPEED=y CONFIG_SYS_TEXT_BASE=0x80000000 CONFIG_SYS_MALLOC_LEN=0x2000000 @@ -32,10 +33,13 @@ CONFIG_BOOTCOMMAND="run bootspi" # CONFIG_DISPLAY_CPUINFO is not set CONFIG_SPL_SIZE_LIMIT_SUBTRACT_GD=y CONFIG_SPL_SIZE_LIMIT_SUBTRACT_MALLOC=y -CONFIG_SPL_NO_BSS_LIMIT=y +CONFIG_SPL_HAS_BSS_LINKER_SECTION=y +CONFIG_SPL_BSS_START_ADDR=0x83000000 +CONFIG_SPL_BSS_MAX_SIZE=0x1000000 CONFIG_SPL_SYS_MALLOC_SIMPLE=y CONFIG_SPL_STACK_R=y CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x2000000 +CONFIG_SPL_SEPARATE_BSS=y CONFIG_SPL_FIT_IMAGE_TINY=y CONFIG_SPL_DM_RESET=y CONFIG_SPL_RAM_SUPPORT=y -- 2.7.4