mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-09 20:56:16 +09:00
50149ea37a
After booting has finished, EFI allows firmware to still interact with the OS using the "runtime services". These callbacks live in a separate address space, since they are available long after U-Boot has been overwritten by the OS. This patch adds enough framework for arbitrary code inside of U-Boot to become a runtime service with the right section attributes set. For now, we don't make use of it yet though. We could maybe in the future map U-boot environment variables to EFI variables here. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
106 lines
1.5 KiB
Plaintext
106 lines
1.5 KiB
Plaintext
/*
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* (C) Copyright 2013
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* David Feng <fenghua@phytium.com.cn>
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*
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* (C) Copyright 2002
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* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64", "elf64-littleaarch64")
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OUTPUT_ARCH(aarch64)
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ENTRY(_start)
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SECTIONS
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{
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. = 0x00000000;
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. = ALIGN(8);
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.text :
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{
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*(.__image_copy_start)
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CPUDIR/start.o (.text*)
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*(.text*)
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}
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. = ALIGN(8);
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.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
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. = ALIGN(8);
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.data : {
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*(.data*)
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}
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. = ALIGN(8);
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. = .;
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. = ALIGN(8);
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.u_boot_list : {
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KEEP(*(SORT(.u_boot_list*)));
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}
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. = ALIGN(8);
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.efi_runtime : {
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__efi_runtime_start = .;
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*(efi_runtime_text)
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*(efi_runtime_data)
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__efi_runtime_stop = .;
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}
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.efi_runtime_rel : {
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__efi_runtime_rel_start = .;
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*(.relaefi_runtime_text)
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*(.relaefi_runtime_data)
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__efi_runtime_rel_stop = .;
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}
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. = ALIGN(8);
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.image_copy_end :
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{
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*(.__image_copy_end)
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}
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. = ALIGN(8);
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.rel_dyn_start :
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{
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*(.__rel_dyn_start)
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}
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.rela.dyn : {
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*(.rela*)
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}
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.rel_dyn_end :
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{
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*(.__rel_dyn_end)
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}
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_end = .;
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. = ALIGN(8);
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.bss_start : {
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KEEP(*(.__bss_start));
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}
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.bss : {
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*(.bss*)
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. = ALIGN(8);
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}
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.bss_end : {
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KEEP(*(.__bss_end));
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}
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/DISCARD/ : { *(.dynsym) }
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/DISCARD/ : { *(.dynstr*) }
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/DISCARD/ : { *(.dynamic*) }
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/DISCARD/ : { *(.plt*) }
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/DISCARD/ : { *(.interp*) }
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/DISCARD/ : { *(.gnu*) }
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}
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