diff options
Diffstat (limited to 'arch/riscv/include/asm/alternative.h')
| -rw-r--r-- | arch/riscv/include/asm/alternative.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/arch/riscv/include/asm/alternative.h b/arch/riscv/include/asm/alternative.h index e625d3cafbed..6511dd73e812 100644 --- a/arch/riscv/include/asm/alternative.h +++ b/arch/riscv/include/asm/alternative.h @@ -12,12 +12,20 @@ #ifndef __ASSEMBLY__ +#ifdef CONFIG_RISCV_ALTERNATIVE + #include <linux/init.h> #include <linux/types.h> #include <linux/stddef.h> #include <asm/hwcap.h> +#define RISCV_ALTERNATIVES_BOOT 0 /* alternatives applied during regular boot */ +#define RISCV_ALTERNATIVES_MODULE 1 /* alternatives applied during module-init */ +#define RISCV_ALTERNATIVES_EARLY_BOOT 2 /* alternatives applied before mmu start */ + void __init apply_boot_alternatives(void); +void __init apply_early_boot_alternatives(void); +void apply_module_alternatives(void *start, size_t length); struct alt_entry { void *old_ptr; /* address of original instruciton or data */ @@ -33,7 +41,22 @@ struct errata_checkfunc_id { }; void sifive_errata_patch_func(struct alt_entry *begin, struct alt_entry *end, - unsigned long archid, unsigned long impid); + unsigned long archid, unsigned long impid, + unsigned int stage); +void thead_errata_patch_func(struct alt_entry *begin, struct alt_entry *end, + unsigned long archid, unsigned long impid, + unsigned int stage); + +void riscv_cpufeature_patch_func(struct alt_entry *begin, struct alt_entry *end, + unsigned int stage); + +#else /* CONFIG_RISCV_ALTERNATIVE */ + +static inline void apply_boot_alternatives(void) { } +static inline void apply_early_boot_alternatives(void) { } +static inline void apply_module_alternatives(void *start, size_t length) { } + +#endif /* CONFIG_RISCV_ALTERNATIVE */ #endif #endif |