git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| f0c426bc KG |
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/module.h> | |
| 20 | #include <linux/elf.h> | |
| 21 | #include <linux/moduleloader.h> | |
| 22 | #include <linux/err.h> | |
| 23 | #include <linux/vmalloc.h> | |
| 24 | #include <linux/bug.h> | |
| 25 | #include <asm/module.h> | |
| 26 | #include <asm/uaccess.h> | |
| 27 | #include <asm/firmware.h> | |
| 28 | #include <linux/sort.h> | |
| 29 | ||
| 30 | #include "setup.h" | |
| 31 | ||
| 32 | LIST_HEAD(module_bug_list); | |
| 33 | ||
| 34 | void *module_alloc(unsigned long size) | |
| 35 | { | |
| 36 | if (size == 0) | |
| 37 | return NULL; | |
| 38 | ||
| 39 | return vmalloc_exec(size); | |
| 40 | } | |
| 41 | ||
| 42 | /* Free memory returned from module_alloc */ | |
| 43 | void module_free(struct module *mod, void *module_region) | |
| 44 | { | |
| 45 | vfree(module_region); | |
| f0c426bc KG |
46 | } |
| 47 | ||
| 48 | static const Elf_Shdr *find_section(const Elf_Ehdr *hdr, | |
| 49 | const Elf_Shdr *sechdrs, | |
| 50 | const char *name) | |
| 51 | { | |
| 52 | char *secstrings; | |
| 53 | unsigned int i; | |
| 54 | ||
| 55 | secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; | |
| 56 | for (i = 1; i < hdr->e_shnum; i++) | |
| 57 | if (strcmp(secstrings+sechdrs[i].sh_name, name) == 0) | |
| 58 | return &sechdrs[i]; | |
| 59 | return NULL; | |
| 60 | } | |
| 61 | ||
| 62 | int module_finalize(const Elf_Ehdr *hdr, | |
| 63 | const Elf_Shdr *sechdrs, struct module *me) | |
| 64 | { | |
| 65 | const Elf_Shdr *sect; | |
| f0c426bc | 66 | |
| f0c426bc KG |
67 | /* Apply feature fixups */ |
| 68 | sect = find_section(hdr, sechdrs, "__ftr_fixup"); | |
| 69 | if (sect != NULL) | |
| 70 | do_feature_fixups(cur_cpu_spec->cpu_features, | |
| 71 | (void *)sect->sh_addr, | |
| 72 | (void *)sect->sh_addr + sect->sh_size); | |
| 73 | ||
| 7c03d653 BH |
74 | sect = find_section(hdr, sechdrs, "__mmu_ftr_fixup"); |
| 75 | if (sect != NULL) | |
| 76 | do_feature_fixups(cur_cpu_spec->mmu_features, | |
| 77 | (void *)sect->sh_addr, | |
| 78 | (void *)sect->sh_addr + sect->sh_size); | |
| 79 | ||
| f0c426bc KG |
80 | #ifdef CONFIG_PPC64 |
| 81 | sect = find_section(hdr, sechdrs, "__fw_ftr_fixup"); | |
| 82 | if (sect != NULL) | |
| 83 | do_feature_fixups(powerpc_firmware_features, | |
| 84 | (void *)sect->sh_addr, | |
| 85 | (void *)sect->sh_addr + sect->sh_size); | |
| 86 | #endif | |
| 87 | ||
| 2d1b2027 KG |
88 | sect = find_section(hdr, sechdrs, "__lwsync_fixup"); |
| 89 | if (sect != NULL) | |
| 90 | do_lwsync_fixups(cur_cpu_spec->cpu_features, | |
| 91 | (void *)sect->sh_addr, | |
| 92 | (void *)sect->sh_addr + sect->sh_size); | |
| 93 | ||
| f0c426bc KG |
94 | return 0; |
| 95 | } | |
| 96 | ||
| 97 | void module_arch_cleanup(struct module *mod) | |
| 98 | { | |
| f0c426bc | 99 | } |