mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-17 00:33:06 +00:00
786d9f1a82
QorIQ U-Boot binary for SD card booting compiled during build process (either u-boot.bin or u-boot-with-spl.bin) cannot be directly loaded by QorIQ pre-PBL BootROM. Compiled U-Boot binary first needs to be processed by Freescale boot_format tool as described in doc/README.mpc85xx-sd-spi-boot BootROM requires that image on SD card must contain special boot sector. Implement support for generating this special boot sector directly in U-Boot start code. Boot sector needs to be at the beginning of the image, so when compiling only proper U-Boot without SPL then it needs to be in proper U-Boot. When compiling SPL with proper U-Boot then it needs to be only in SPL. Support can be enabled by a new config option FSL_PREPBL_ESDHC_BOOT_SECTOR. Via other two additional options FSL_PREPBL_ESDHC_BOOT_SECTOR_START and FSL_PREPBL_ESDHC_BOOT_SECTOR_DATA it is possible to tune how final U-Boot image could be stored on the SD card. Signed-off-by: Pali Rohár <pali@kernel.org>
121 lines
2.5 KiB
Text
121 lines
2.5 KiB
Text
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright 2007-2009, 2011 Freescale Semiconductor, Inc.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#ifdef CONFIG_RESET_VECTOR_ADDRESS
|
|
#define RESET_VECTOR_ADDRESS CONFIG_RESET_VECTOR_ADDRESS
|
|
#else
|
|
#define RESET_VECTOR_ADDRESS 0xfffffffc
|
|
#endif
|
|
|
|
OUTPUT_ARCH(powerpc)
|
|
ENTRY(_start)
|
|
|
|
SECTIONS
|
|
{
|
|
/* Optional boot sector */
|
|
#if defined(CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR) && !defined(CONFIG_SPL)
|
|
.bootsect CONFIG_SYS_TEXT_BASE - CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR_DATA * 512 : {
|
|
KEEP(arch/powerpc/cpu/mpc85xx/start.o (.bootsect))
|
|
. = CONFIG_FSL_PREPBL_ESDHC_BOOT_SECTOR_DATA * 512;
|
|
}
|
|
#endif
|
|
|
|
/* Read-only sections, merged into text segment: */
|
|
.text :
|
|
{
|
|
#if CONFIG_IS_ENABLED(SYS_MPC85XX_NO_RESETVEC)
|
|
KEEP(arch/powerpc/cpu/mpc85xx/start.o (.bootpg))
|
|
#endif
|
|
*(.text*)
|
|
}
|
|
_etext = .;
|
|
PROVIDE (etext = .);
|
|
.rodata :
|
|
{
|
|
*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
|
|
}
|
|
|
|
/* Read-write section, merged into data segment: */
|
|
. = (. + 0x00FF) & 0xFFFFFF00;
|
|
_erotext = .;
|
|
PROVIDE (erotext = .);
|
|
.reloc :
|
|
{
|
|
_GOT2_TABLE_ = .;
|
|
KEEP(*(.got2))
|
|
KEEP(*(.got))
|
|
_FIXUP_TABLE_ = .;
|
|
KEEP(*(.fixup))
|
|
}
|
|
__got2_entries = ((_GLOBAL_OFFSET_TABLE_ - _GOT2_TABLE_) >> 2) - 1;
|
|
__fixup_entries = (. - _FIXUP_TABLE_) >> 2;
|
|
|
|
.data :
|
|
{
|
|
*(.data*)
|
|
*(.sdata*)
|
|
}
|
|
_edata = .;
|
|
PROVIDE (edata = .);
|
|
|
|
. = .;
|
|
|
|
. = ALIGN(4);
|
|
__u_boot_list : {
|
|
KEEP(*(SORT(__u_boot_list*)));
|
|
}
|
|
|
|
. = .;
|
|
__start___ex_table = .;
|
|
__ex_table : { *(__ex_table) }
|
|
__stop___ex_table = .;
|
|
|
|
. = ALIGN(4);
|
|
__init_begin = .;
|
|
.text.init : { *(.text.init) }
|
|
.data.init : { *(.data.init) }
|
|
. = ALIGN(4);
|
|
__init_end = .;
|
|
_end = .;
|
|
|
|
#if !CONFIG_IS_ENABLED(SYS_MPC85XX_NO_RESETVEC)
|
|
.bootpg RESET_VECTOR_ADDRESS - 0xffc :
|
|
{
|
|
arch/powerpc/cpu/mpc85xx/start.o (.bootpg)
|
|
} = 0xffff
|
|
|
|
.resetvec RESET_VECTOR_ADDRESS :
|
|
{
|
|
KEEP(*(.resetvec))
|
|
} = 0xffff
|
|
|
|
. = RESET_VECTOR_ADDRESS + 0x4;
|
|
|
|
/*
|
|
* Make sure that the bss segment isn't linked at 0x0, otherwise its
|
|
* address won't be updated during relocation fixups. Note that
|
|
* this is a temporary fix. Code to dynamically the fixup the bss
|
|
* location will be added in the future. When the bss relocation
|
|
* fixup code is present this workaround should be removed.
|
|
*/
|
|
#if (RESET_VECTOR_ADDRESS == 0xfffffffc)
|
|
. |= 0x10;
|
|
#endif
|
|
#endif
|
|
|
|
__bss_start = .;
|
|
.bss (NOLOAD) :
|
|
{
|
|
*(.sbss*)
|
|
*(.bss*)
|
|
*(COMMON)
|
|
}
|
|
|
|
. = ALIGN(4);
|
|
__bss_end = . ;
|
|
PROVIDE (end = .);
|
|
}
|