162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef __ASM_ALTERNATIVE_H 362306a36Sopenharmony_ci#define __ASM_ALTERNATIVE_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <asm/alternative-macros.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#ifndef __ASSEMBLY__ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#include <linux/init.h> 1062306a36Sopenharmony_ci#include <linux/types.h> 1162306a36Sopenharmony_ci#include <linux/stddef.h> 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_cistruct alt_instr { 1462306a36Sopenharmony_ci s32 orig_offset; /* offset to original instruction */ 1562306a36Sopenharmony_ci s32 alt_offset; /* offset to replacement instruction */ 1662306a36Sopenharmony_ci u16 cpucap; /* cpucap bit set for replacement */ 1762306a36Sopenharmony_ci u8 orig_len; /* size of original instruction(s) */ 1862306a36Sopenharmony_ci u8 alt_len; /* size of new instruction(s), <= orig_len */ 1962306a36Sopenharmony_ci}; 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_citypedef void (*alternative_cb_t)(struct alt_instr *alt, 2262306a36Sopenharmony_ci __le32 *origptr, __le32 *updptr, int nr_inst); 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_civoid __init apply_boot_alternatives(void); 2562306a36Sopenharmony_civoid __init apply_alternatives_all(void); 2662306a36Sopenharmony_cibool alternative_is_applied(u16 cpucap); 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ci#ifdef CONFIG_MODULES 2962306a36Sopenharmony_civoid apply_alternatives_module(void *start, size_t length); 3062306a36Sopenharmony_ci#else 3162306a36Sopenharmony_cistatic inline void apply_alternatives_module(void *start, size_t length) { } 3262306a36Sopenharmony_ci#endif 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_civoid alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr, 3562306a36Sopenharmony_ci __le32 *updptr, int nr_inst); 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ci#endif /* __ASSEMBLY__ */ 3862306a36Sopenharmony_ci#endif /* __ASM_ALTERNATIVE_H */ 39