diff options
Diffstat (limited to 'include/arch/aarch64/arch_features.h')
| -rw-r--r-- | include/arch/aarch64/arch_features.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/arch/aarch64/arch_features.h b/include/arch/aarch64/arch_features.h index dc0b7f306..46cd1c982 100644 --- a/include/arch/aarch64/arch_features.h +++ b/include/arch/aarch64/arch_features.h @@ -117,4 +117,21 @@ static inline unsigned int get_mpam_version(void) ID_AA64PFR1_MPAM_FRAC_SHIFT) & ID_AA64PFR1_MPAM_FRAC_MASK)); } +static inline bool is_feat_hcx_present(void) +{ + return (((read_id_aa64mmfr1_el1() >> ID_AA64MMFR1_EL1_HCX_SHIFT) & + ID_AA64MMFR1_EL1_HCX_MASK) == ID_AA64MMFR1_EL1_HCX_SUPPORTED); +} + +static inline unsigned int get_armv9_2_feat_rme_support(void) +{ + /* + * Return the RME version, zero if not supported. This function can be + * used as both an integer value for the RME version or compared to zero + * to detect RME presence. + */ + return (unsigned int)(read_id_aa64pfr0_el1() >> + ID_AA64PFR0_FEAT_RME_SHIFT) & ID_AA64PFR0_FEAT_RME_MASK; +} + #endif /* ARCH_FEATURES_H */ |