u-boot/arch/arm/cpu/armv8/u-boot.lds
Alexander Graf 50149ea37a efi_loader: Add runtime services
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>
2016-03-15 18:03:10 -04:00

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Text

/*
* (C) Copyright 2013
* David Feng <fenghua@phytium.com.cn>
*
* (C) Copyright 2002
* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64", "elf64-littleaarch64")
OUTPUT_ARCH(aarch64)
ENTRY(_start)
SECTIONS
{
. = 0x00000000;
. = ALIGN(8);
.text :
{
*(.__image_copy_start)
CPUDIR/start.o (.text*)
*(.text*)
}
. = ALIGN(8);
.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
. = ALIGN(8);
.data : {
*(.data*)
}
. = ALIGN(8);
. = .;
. = ALIGN(8);
.u_boot_list : {
KEEP(*(SORT(.u_boot_list*)));
}
. = ALIGN(8);
.efi_runtime : {
__efi_runtime_start = .;
*(efi_runtime_text)
*(efi_runtime_data)
__efi_runtime_stop = .;
}
.efi_runtime_rel : {
__efi_runtime_rel_start = .;
*(.relaefi_runtime_text)
*(.relaefi_runtime_data)
__efi_runtime_rel_stop = .;
}
. = ALIGN(8);
.image_copy_end :
{
*(.__image_copy_end)
}
. = ALIGN(8);
.rel_dyn_start :
{
*(.__rel_dyn_start)
}
.rela.dyn : {
*(.rela*)
}
.rel_dyn_end :
{
*(.__rel_dyn_end)
}
_end = .;
. = ALIGN(8);
.bss_start : {
KEEP(*(.__bss_start));
}
.bss : {
*(.bss*)
. = ALIGN(8);
}
.bss_end : {
KEEP(*(.__bss_end));
}
/DISCARD/ : { *(.dynsym) }
/DISCARD/ : { *(.dynstr*) }
/DISCARD/ : { *(.dynamic*) }
/DISCARD/ : { *(.plt*) }
/DISCARD/ : { *(.interp*) }
/DISCARD/ : { *(.gnu*) }
}