diff options
Diffstat (limited to 'include/arch/aarch64/arch_features.h')
| -rw-r--r-- | include/arch/aarch64/arch_features.h | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/include/arch/aarch64/arch_features.h b/include/arch/aarch64/arch_features.h index a0141defa..d6f12f3f2 100644 --- a/include/arch/aarch64/arch_features.h +++ b/include/arch/aarch64/arch_features.h @@ -499,14 +499,22 @@ static inline bool is_feat_sve_supported(void) return read_feat_sve_id_field() >= ID_AA64PFR0_SVE_SUPPORTED; } -/******************************************************************************* - * Function to identify the presence of FEAT_RAS (Reliability,Availability, - * and Serviceability Extension) - ******************************************************************************/ -static inline bool is_armv8_2_feat_ras_present(void) +static unsigned int read_feat_ras_id_field(void) +{ + return ISOLATE_FIELD(read_id_aa64pfr0_el1(), ID_AA64PFR0_RAS); +} + +static inline bool is_feat_ras_supported(void) { - return (((read_id_aa64pfr0_el1() >> ID_AA64PFR0_RAS_SHIFT) & - ID_AA64PFR0_RAS_MASK) != ID_AA64PFR0_RAS_NOT_SUPPORTED); + if (ENABLE_FEAT_RAS == FEAT_STATE_DISABLED) { + return false; + } + + if (ENABLE_FEAT_RAS == FEAT_STATE_ALWAYS) { + return true; + } + + return read_feat_ras_id_field() != 0U; } static unsigned int read_feat_dit_id_field(void) |