projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| f0c426bc KG |
2 | /* Kernel module help for powerpc. |
| 3 | Copyright (C) 2001, 2003 Rusty Russell IBM Corporation. | |
| 4 | Copyright (C) 2008 Freescale Semiconductor, Inc. | |
| 5 | ||
| f0c426bc | 6 | */ |
| f0c426bc KG |
7 | #include <linux/elf.h> |
| 8 | #include <linux/moduleloader.h> | |
| 9 | #include <linux/err.h> | |
| 8abddd96 | 10 | #include <linux/mm.h> |
| f0c426bc KG |
11 | #include <linux/bug.h> |
| 12 | #include <asm/module.h> | |
| 7c0f6ba6 | 13 | #include <linux/uaccess.h> |
| f0c426bc KG |
14 | #include <asm/firmware.h> |
| 15 | #include <linux/sort.h> | |
| b88c4767 | 16 | #include <asm/setup.h> |
| 2ec13df1 | 17 | #include <asm/sections.h> |
| f0c426bc | 18 | |
| 7c98bd72 | 19 | static LIST_HEAD(module_bug_list); |
| f0c426bc | 20 | |
| f0c426bc KG |
21 | static const Elf_Shdr *find_section(const Elf_Ehdr *hdr, |
| 22 | const Elf_Shdr *sechdrs, | |
| 23 | const char *name) | |
| 24 | { | |
| 25 | char *secstrings; | |
| 26 | unsigned int i; | |
| 27 | ||
| 28 | secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; | |
| 29 | for (i = 1; i < hdr->e_shnum; i++) | |
| 30 | if (strcmp(secstrings+sechdrs[i].sh_name, name) == 0) | |
| 31 | return &sechdrs[i]; | |
| 32 | return NULL; | |
| 33 | } | |
| 34 | ||
| 35 | int module_finalize(const Elf_Ehdr *hdr, | |
| 36 | const Elf_Shdr *sechdrs, struct module *me) | |
| 37 | { | |
| 38 | const Elf_Shdr *sect; | |
| 136cd345 ME |
39 | int rc; |
| 40 | ||
| 41 | rc = module_finalize_ftrace(me, sechdrs); | |
| 42 | if (rc) | |
| 43 | return rc; | |
| f0c426bc | 44 | |
| f0c426bc KG |
45 | /* Apply feature fixups */ |
| 46 | sect = find_section(hdr, sechdrs, "__ftr_fixup"); | |
| 47 | if (sect != NULL) | |
| 48 | do_feature_fixups(cur_cpu_spec->cpu_features, | |
| 49 | (void *)sect->sh_addr, | |
| 50 | (void *)sect->sh_addr + sect->sh_size); | |
| 51 | ||
| 7c03d653 BH |
52 | sect = find_section(hdr, sechdrs, "__mmu_ftr_fixup"); |
| 53 | if (sect != NULL) | |
| 54 | do_feature_fixups(cur_cpu_spec->mmu_features, | |
| 55 | (void *)sect->sh_addr, | |
| 56 | (void *)sect->sh_addr + sect->sh_size); | |
| 57 | ||
| f0c426bc KG |
58 | #ifdef CONFIG_PPC64 |
| 59 | sect = find_section(hdr, sechdrs, "__fw_ftr_fixup"); | |
| 60 | if (sect != NULL) | |
| 61 | do_feature_fixups(powerpc_firmware_features, | |
| 62 | (void *)sect->sh_addr, | |
| 63 | (void *)sect->sh_addr + sect->sh_size); | |
| 179ab1cb | 64 | #endif /* CONFIG_PPC64 */ |
| 815069ca | 65 | |
| 7d40aff8 | 66 | #ifdef CONFIG_PPC64_ELF_ABI_V1 |
| 59fe7eaf NR |
67 | sect = find_section(hdr, sechdrs, ".opd"); |
| 68 | if (sect != NULL) { | |
| 69 | me->arch.start_opd = sect->sh_addr; | |
| 70 | me->arch.end_opd = sect->sh_addr + sect->sh_size; | |
| 71 | } | |
| 7d40aff8 | 72 | #endif /* CONFIG_PPC64_ELF_ABI_V1 */ |
| 59fe7eaf | 73 | |
| 179ab1cb | 74 | #ifdef CONFIG_PPC_BARRIER_NOSPEC |
| 815069ca MS |
75 | sect = find_section(hdr, sechdrs, "__spec_barrier_fixup"); |
| 76 | if (sect != NULL) | |
| 77 | do_barrier_nospec_fixups_range(barrier_nospec_enabled, | |
| 78 | (void *)sect->sh_addr, | |
| 79 | (void *)sect->sh_addr + sect->sh_size); | |
| 179ab1cb | 80 | #endif /* CONFIG_PPC_BARRIER_NOSPEC */ |
| f0c426bc | 81 | |
| 2d1b2027 KG |
82 | sect = find_section(hdr, sechdrs, "__lwsync_fixup"); |
| 83 | if (sect != NULL) | |
| 84 | do_lwsync_fixups(cur_cpu_spec->cpu_features, | |
| 85 | (void *)sect->sh_addr, | |
| 86 | (void *)sect->sh_addr + sect->sh_size); | |
| 87 | ||
| f0c426bc KG |
88 | return 0; |
| 89 | } |