diff options
| -rw-r--r-- | arch/arm64/include/asm/cpufeature.h | 7 | ||||
| -rw-r--r-- | arch/arm64/include/asm/sysreg.h | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index b9b6494..7f64285 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -170,6 +170,13 @@ static inline bool id_aa64mmfr0_mixed_endian_el0(u64 mmfr0) cpuid_feature_extract_unsigned_field(mmfr0, ID_AA64MMFR0_BIGENDEL0_SHIFT) == 0x1; } +static inline bool id_aa64pfr0_32bit_el0(u64 pfr0) +{ + u32 val = cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_EL0_SHIFT); + + return val == ID_AA64PFR0_EL0_32BIT_64BIT; +} + void __init setup_cpu_features(void); void update_cpu_capabilities(const struct arm64_cpu_capabilities *caps, diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 19182ef..d39d434 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -115,6 +115,7 @@ #define ID_AA64PFR0_ASIMD_SUPPORTED 0x0 #define ID_AA64PFR0_EL1_64BIT_ONLY 0x1 #define ID_AA64PFR0_EL0_64BIT_ONLY 0x1 +#define ID_AA64PFR0_EL0_32BIT_64BIT 0x2 /* id_aa64mmfr0 */ #define ID_AA64MMFR0_TGRAN4_SHIFT 28 |
