diff options
Diffstat (limited to 'arch/arm64/include/asm/cpufeature.h')
| -rw-r--r-- | arch/arm64/include/asm/cpufeature.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index b6c16d5f622f..82cb9f98ba1a 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -23,11 +23,24 @@ #define ARM64_WORKAROUND_CLEAN_CACHE 0 #define ARM64_WORKAROUND_DEVICE_LOAD_ACQUIRE 1 +#define ARM64_WORKAROUND_845719 2 -#define ARM64_NCAPS 2 +#define ARM64_NCAPS 3 #ifndef __ASSEMBLY__ +struct arm64_cpu_capabilities { + const char *desc; + u16 capability; + bool (*matches)(const struct arm64_cpu_capabilities *); + union { + struct { /* To be used for erratum handling only */ + u32 midr_model; + u32 midr_range_min, midr_range_max; + }; + }; +}; + extern DECLARE_BITMAP(cpu_hwcaps, ARM64_NCAPS); static inline bool cpu_have_feature(unsigned int num) @@ -51,7 +64,10 @@ static inline void cpus_set_cap(unsigned int num) __set_bit(num, cpu_hwcaps); } +void check_cpu_capabilities(const struct arm64_cpu_capabilities *caps, + const char *info); void check_local_cpu_errata(void); +void check_local_cpu_features(void); bool cpu_supports_mixed_endian_el0(void); bool system_supports_mixed_endian_el0(void); |