mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-28 04:48:52 +09:00
![Graeme Russ](/assets/img/avatar_default.png)
Create an init function array for board_init_f_r - This finalises the migration to a purely array based initialisation mechanism Also tweak a few comments while we are at it so everything is 'correct' -- Changes for v2: - Renamed to a more apt name - Fix bug in set_reloc_flag_r - Re-instate gd->flags = boot_flags; in board_init_f - Added commit message
92 lines
2.5 KiB
C
92 lines
2.5 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>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <malloc.h>
|
|
#include <asm/u-boot-x86.h>
|
|
#include <asm/relocate.h>
|
|
#include <elf.h>
|
|
|
|
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 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;
|
|
}
|
|
|
|
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;
|
|
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) {
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
} while (re_src++ < re_end);
|
|
|
|
return 0;
|
|
}
|