mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 19:26:16 +09:00
bb0dc1084f
The code from the internal on-chip ROM. It loads the final uboot image into DDR, then jump to it to begin execution. The SPL's size is sizeable, the maximum size must not exceed the size of L2 SRAM. It initializes the DDR through SPD code, and copys final uboot image to DDR. So there are two stage uboot images: * spl_boot, 96KB size. The env variables are copied to L2 SRAM, so that ddr spd code can get the interleaving mode setting in env. It loads final uboot image from offset 96KB. * final uboot image, size is variable depends on the functions enabled. Signed-off-by: Ying Zhang <b40530@freescale.com> Acked-by: York Sun <yorksun@freescale.com>
93 lines
1.7 KiB
Plaintext
93 lines
1.7 KiB
Plaintext
/*
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* (C) Copyright 2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de
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*
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* Copyright 2009 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include "config.h" /* CONFIG_BOARDDIR */
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OUTPUT_ARCH(powerpc)
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#ifdef CONFIG_SYS_MPC85XX_NO_RESETVEC
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PHDRS
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{
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text PT_LOAD;
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bss PT_LOAD;
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}
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#endif
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SECTIONS
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{
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. = CONFIG_SPL_TEXT_BASE;
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.text : {
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*(.text*)
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}
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_etext = .;
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.reloc : {
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_GOT2_TABLE_ = .;
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KEEP(*(.got2))
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KEEP(*(.got))
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PROVIDE(_GLOBAL_OFFSET_TABLE_ = . + 4);
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_FIXUP_TABLE_ = .;
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KEEP(*(.fixup))
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}
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__got2_entries = ((_GLOBAL_OFFSET_TABLE_ - _GOT2_TABLE_) >> 2) - 1;
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__fixup_entries = (. - _FIXUP_TABLE_) >> 2;
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. = ALIGN(8);
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.data : {
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*(.rodata*)
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*(.data*)
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*(.sdata*)
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}
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_edata = .;
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. = .;
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__start___ex_table = .;
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__ex_table : { *(__ex_table) }
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__stop___ex_table = .;
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. = ALIGN(8);
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__init_begin = .;
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__init_end = .;
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/* FIXME for non-NAND SPL */
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#if defined(CONFIG_FSL_IFC) /* Restrict bootpg at 4K boundry for IFC */
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.bootpg ADDR(.text) + 0x1000 :
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{
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arch/powerpc/cpu/mpc85xx/start.o (.bootpg)
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}
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#define RESET_VECTOR_OFFSET 0x1ffc /* IFC has 8K sram */
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#elif defined(CONFIG_FSL_ELBC)
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#define RESET_VECTOR_OFFSET 0xffc /* LBC has 4k sram */
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#else
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#error unknown NAND controller
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#endif
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#ifdef CONFIG_SYS_MPC85XX_NO_RESETVEC
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.bootpg ADDR(.text) - 0x1000 :
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{
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KEEP(*(.bootpg))
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} :text = 0xffff
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#else
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.resetvec ADDR(.text) + RESET_VECTOR_OFFSET : {
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KEEP(*(.resetvec))
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} = 0xffff
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#endif
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/*
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* Make sure that the bss segment isn't linked at 0x0, otherwise its
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* address won't be updated during relocation fixups.
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*/
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. |= 0x10;
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. = ALIGN(4);
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__bss_start = .;
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.bss : {
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*(.sbss*)
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*(.bss*)
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}
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. = ALIGN(4);
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__bss_end = .;
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}
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