Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
/*
|
|
* (C) Copyright 2008-2011
|
|
* Graeme Russ, <graeme.russ@gmail.com>
|
|
*
|
|
* (C) Copyright 2002
|
|
* Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
|
|
*
|
|
* (C) Copyright 2002
|
|
* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
|
|
*
|
|
* (C) Copyright 2002
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Marius Groeger <mgroeger@sysgo.de>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <libfdt.h>
|
|
#include <malloc.h>
|
|
#include <asm/u-boot-x86.h>
|
|
#include <asm/relocate.h>
|
|
#include <asm/sections.h>
|
|
#include <elf.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
int copy_uboot_to_ram(void)
|
|
{
|
|
size_t len = (size_t)&__data_end - (size_t)&__text_start;
|
|
|
|
memcpy((void *)gd->relocaddr, (void *)&__text_start, len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int copy_fdt_to_ram(void)
|
|
{
|
|
if (gd->new_fdt) {
|
|
ulong fdt_size;
|
|
|
|
fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
|
|
|
|
memcpy(gd->new_fdt, gd->fdt_blob, fdt_size);
|
|
debug("Relocated fdt from %p to %p, size %lx\n",
|
|
gd->fdt_blob, gd->new_fdt, fdt_size);
|
|
gd->fdt_blob = gd->new_fdt;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int clear_bss(void)
|
|
{
|
|
ulong dst_addr = (ulong)&__bss_start + gd->reloc_off;
|
|
size_t len = (size_t)&__bss_end - (size_t)&__bss_start;
|
|
|
|
memset((void *)dst_addr, 0x00, len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function has more error checking than you might expect. Please see
|
|
* the commit message for more informaiton.
|
|
*/
|
|
int do_elf_reloc_fixups(void)
|
|
{
|
|
Elf32_Rel *re_src = (Elf32_Rel *)(&__rel_dyn_start);
|
|
Elf32_Rel *re_end = (Elf32_Rel *)(&__rel_dyn_end);
|
|
|
|
Elf32_Addr *offset_ptr_rom, *last_offset = NULL;
|
|
Elf32_Addr *offset_ptr_ram;
|
|
|
|
/* The size of the region of u-boot that runs out of RAM. */
|
|
uintptr_t size = (uintptr_t)&__bss_end - (uintptr_t)&__text_start;
|
|
|
|
do {
|
|
/* Get the location from the relocation entry */
|
|
offset_ptr_rom = (Elf32_Addr *)re_src->r_offset;
|
|
|
|
/* Check that the location of the relocation is in .text */
|
|
if (offset_ptr_rom >= (Elf32_Addr *)CONFIG_SYS_TEXT_BASE &&
|
|
offset_ptr_rom > last_offset) {
|
|
|
|
/* Switch to the in-RAM version */
|
|
offset_ptr_ram = (Elf32_Addr *)((ulong)offset_ptr_rom +
|
|
gd->reloc_off);
|
|
|
|
/* Check that the target points into .text */
|
|
if (*offset_ptr_ram >= CONFIG_SYS_TEXT_BASE &&
|
|
*offset_ptr_ram <=
|
|
(CONFIG_SYS_TEXT_BASE + size)) {
|
|
*offset_ptr_ram += gd->reloc_off;
|
|
} else {
|
|
debug(" %p: rom reloc %x, ram %p, value %x,"
|
|
" limit %lx\n", re_src,
|
|
re_src->r_offset, offset_ptr_ram,
|
|
*offset_ptr_ram,
|
|
CONFIG_SYS_TEXT_BASE + size);
|
|
}
|
|
} else {
|
|
debug(" %p: rom reloc %x, last %p\n", re_src,
|
|
re_src->r_offset, last_offset);
|
|
}
|
|
last_offset = offset_ptr_rom;
|
|
|
|
} while (++re_src < re_end);
|
|
|
|
return 0;
|
|
}
|