2 * (C) Copyright 2008-2011
3 * Graeme Russ, <graeme.russ@gmail.com>
6 * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
9 * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
12 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
13 * Marius Groeger <mgroeger@sysgo.de>
15 * See file CREDITS for list of people who contributed to this
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License as
20 * published by the Free Software Foundation; either version 2 of
21 * the License, or (at your option) any later version.
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
36 #include <asm/u-boot-x86.h>
37 #include <asm/relocate.h>
40 int copy_uboot_to_ram(void)
42 size_t len = (size_t)&__data_end - (size_t)&__text_start;
44 memcpy((void *)gd->relocaddr, (void *)&__text_start, len);
51 ulong dst_addr = (ulong)&__bss_start + gd->reloc_off;
52 size_t len = (size_t)&__bss_end - (size_t)&__bss_start;
54 memset((void *)dst_addr, 0x00, len);
59 int do_elf_reloc_fixups(void)
61 Elf32_Rel *re_src = (Elf32_Rel *)(&__rel_dyn_start);
62 Elf32_Rel *re_end = (Elf32_Rel *)(&__rel_dyn_end);
64 Elf32_Addr *offset_ptr_rom;
65 Elf32_Addr *offset_ptr_ram;
67 /* The size of the region of u-boot that runs out of RAM. */
68 uintptr_t size = (uintptr_t)&__bss_end - (uintptr_t)&__text_start;
71 /* Get the location from the relocation entry */
72 offset_ptr_rom = (Elf32_Addr *)re_src->r_offset;
74 /* Check that the location of the relocation is in .text */
75 if (offset_ptr_rom >= (Elf32_Addr *)CONFIG_SYS_TEXT_BASE) {
77 /* Switch to the in-RAM version */
78 offset_ptr_ram = (Elf32_Addr *)((ulong)offset_ptr_rom +
81 /* Check that the target points into .text */
82 if (*offset_ptr_ram >= CONFIG_SYS_TEXT_BASE &&
84 (CONFIG_SYS_TEXT_BASE + size)) {
85 *offset_ptr_ram += gd->reloc_off;
88 } while (re_src++ < re_end);