1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | // Copyright 2023 Google LLC |
3 | // Author: Ard Biesheuvel <ardb@google.com> |
4 | |
5 | #include <linux/types.h> |
6 | |
7 | #define __prel64_initconst __section(".init.rodata.prel64") |
8 | |
9 | #define PREL64(type, name) union { type *name; prel64_t name ## _prel; } |
10 | |
11 | #define prel64_pointer(__d) (typeof(__d))prel64_to_pointer(&__d##_prel) |
12 | |
13 | typedef volatile signed long prel64_t; |
14 | |
15 | static inline void *prel64_to_pointer(const prel64_t *offset) |
16 | { |
17 | if (!*offset) |
18 | return NULL; |
19 | return (void *)offset + *offset; |
20 | } |
21 | |
22 | extern bool dynamic_scs_is_enabled; |
23 | |
24 | extern pgd_t init_idmap_pg_dir[], init_idmap_pg_end[]; |
25 | |
26 | void init_feature_override(u64 boot_status, const void *fdt, int chosen); |
27 | u64 kaslr_early_init(void *fdt, int chosen); |
28 | void relocate_kernel(u64 offset); |
29 | int scs_patch(const u8 eh_frame[], int size); |
30 | |
31 | void map_range(u64 *pgd, u64 start, u64 end, u64 pa, pgprot_t prot, |
32 | int level, pte_t *tbl, bool may_use_cont, u64 va_offset); |
33 | |
34 | asmlinkage void early_map_kernel(u64 boot_status, void *fdt); |
35 | |
36 | asmlinkage u64 create_init_idmap(pgd_t *pgd, pteval_t clrmask); |
37 | |