^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* Kernel module help for powerpc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) Copyright (C) 2001, 2003 Rusty Russell IBM Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) Copyright (C) 2008 Freescale Semiconductor, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/elf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/moduleloader.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/vmalloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/bug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/firmware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/sort.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static LIST_HEAD(module_bug_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) const Elf_Shdr *sechdrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) char *secstrings;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) for (i = 1; i < hdr->e_shnum; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) if (strcmp(secstrings+sechdrs[i].sh_name, name) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) return &sechdrs[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) int module_finalize(const Elf_Ehdr *hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) const Elf_Shdr *sechdrs, struct module *me)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) const Elf_Shdr *sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) rc = module_finalize_ftrace(me, sechdrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* Apply feature fixups */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) sect = find_section(hdr, sechdrs, "__ftr_fixup");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (sect != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) do_feature_fixups(cur_cpu_spec->cpu_features,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) (void *)sect->sh_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) (void *)sect->sh_addr + sect->sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) sect = find_section(hdr, sechdrs, "__mmu_ftr_fixup");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (sect != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) do_feature_fixups(cur_cpu_spec->mmu_features,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) (void *)sect->sh_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) (void *)sect->sh_addr + sect->sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #ifdef CONFIG_PPC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) sect = find_section(hdr, sechdrs, "__fw_ftr_fixup");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (sect != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) do_feature_fixups(powerpc_firmware_features,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) (void *)sect->sh_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) (void *)sect->sh_addr + sect->sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #endif /* CONFIG_PPC64 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #ifdef PPC64_ELF_ABI_v1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) sect = find_section(hdr, sechdrs, ".opd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (sect != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) me->arch.start_opd = sect->sh_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) me->arch.end_opd = sect->sh_addr + sect->sh_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #endif /* PPC64_ELF_ABI_v1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #ifdef CONFIG_PPC_BARRIER_NOSPEC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) sect = find_section(hdr, sechdrs, "__spec_barrier_fixup");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (sect != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) do_barrier_nospec_fixups_range(barrier_nospec_enabled,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) (void *)sect->sh_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) (void *)sect->sh_addr + sect->sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #endif /* CONFIG_PPC_BARRIER_NOSPEC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) sect = find_section(hdr, sechdrs, "__lwsync_fixup");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (sect != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) do_lwsync_fixups(cur_cpu_spec->cpu_features,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) (void *)sect->sh_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) (void *)sect->sh_addr + sect->sh_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #ifdef MODULES_VADDR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) void *module_alloc(unsigned long size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, GFP_KERNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) PAGE_KERNEL_EXEC, VM_FLUSH_RESET_PERMS, NUMA_NO_NODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) __builtin_return_address(0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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