1/*  Kernel module help for powerpc.
2    Copyright (C) 2001, 2003 Rusty Russell IBM Corporation.
3    Copyright (C) 2008 Freescale Semiconductor, Inc.
4
5    This program is free software; you can redistribute it and/or modify
6    it under the terms of the GNU General Public License as published by
7    the Free Software Foundation; either version 2 of the License, or
8    (at your option) any later version.
9
10    This program is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13    GNU General Public License for more details.
14
15    You should have received a copy of the GNU General Public License
16    along with this program; if not, write to the Free Software
17    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18*/
19#include <linux/elf.h>
20#include <linux/moduleloader.h>
21#include <linux/err.h>
22#include <linux/vmalloc.h>
23#include <linux/bug.h>
24#include <asm/module.h>
25#include <asm/uaccess.h>
26#include <asm/firmware.h>
27#include <linux/sort.h>
28#include <asm/setup.h>
29
30LIST_HEAD(module_bug_list);
31
32static const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
33				    const Elf_Shdr *sechdrs,
34				    const char *name)
35{
36	char *secstrings;
37	unsigned int i;
38
39	secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
40	for (i = 1; i < hdr->e_shnum; i++)
41		if (strcmp(secstrings+sechdrs[i].sh_name, name) == 0)
42			return &sechdrs[i];
43	return NULL;
44}
45
46int module_finalize(const Elf_Ehdr *hdr,
47		const Elf_Shdr *sechdrs, struct module *me)
48{
49	const Elf_Shdr *sect;
50
51	/* Apply feature fixups */
52	sect = find_section(hdr, sechdrs, "__ftr_fixup");
53	if (sect != NULL)
54		do_feature_fixups(cur_cpu_spec->cpu_features,
55				  (void *)sect->sh_addr,
56				  (void *)sect->sh_addr + sect->sh_size);
57
58	sect = find_section(hdr, sechdrs, "__mmu_ftr_fixup");
59	if (sect != NULL)
60		do_feature_fixups(cur_cpu_spec->mmu_features,
61				  (void *)sect->sh_addr,
62				  (void *)sect->sh_addr + sect->sh_size);
63
64#ifdef CONFIG_PPC64
65	sect = find_section(hdr, sechdrs, "__fw_ftr_fixup");
66	if (sect != NULL)
67		do_feature_fixups(powerpc_firmware_features,
68				  (void *)sect->sh_addr,
69				  (void *)sect->sh_addr + sect->sh_size);
70#endif
71
72	sect = find_section(hdr, sechdrs, "__lwsync_fixup");
73	if (sect != NULL)
74		do_lwsync_fixups(cur_cpu_spec->cpu_features,
75				 (void *)sect->sh_addr,
76				 (void *)sect->sh_addr + sect->sh_size);
77
78	return 0;
79}
80