feat(cpufeat): add feat detection helpers
This patch adds multiple feature detection helpers, useful for
tests that need to check for the presence of those features.
Signed-off-by: Juan Pablo Conde <juanpablo.conde@arm.com>
Change-Id: Ie6d39b9e9c8d28d0a4cd9d02350e2bedd016e45e
diff --git a/include/lib/aarch64/arch_features.h b/include/lib/aarch64/arch_features.h
index ee14d67..85f8952 100644
--- a/include/lib/aarch64/arch_features.h
+++ b/include/lib/aarch64/arch_features.h
@@ -22,8 +22,18 @@
static inline bool is_armv8_1_pan_present(void)
{
- return ((read_id_aa64mmfr1_el1() >> ID_AA64MMFR1_EL1_PAN_SHIFT) &
- ID_AA64MMFR1_EL1_PAN_MASK) != 0U;
+ u_register_t id_aa64mmfr1_pan =
+ EXTRACT(ID_AA64MMFR1_EL1_PAN, read_id_aa64mmfr1_el1());
+ return (id_aa64mmfr1_pan >= ID_AA64MMFR1_EL1_PAN_SUPPORTED) &&
+ (id_aa64mmfr1_pan <= ID_AA64MMFR1_EL1_PAN3_SUPPORTED);
+}
+
+static inline bool is_armv8_2_pan2_present(void)
+{
+ u_register_t id_aa64mmfr1_pan =
+ EXTRACT(ID_AA64MMFR1_EL1_PAN, read_id_aa64mmfr1_el1());
+ return (id_aa64mmfr1_pan >= ID_AA64MMFR1_EL1_PAN2_SUPPORTED) &&
+ (id_aa64mmfr1_pan <= ID_AA64MMFR1_EL1_PAN3_SUPPORTED);
}
static inline bool is_armv8_2_sve_present(void)
@@ -289,4 +299,111 @@
&& (is_feat_52b_on_4k_supported() == true)));
}
+static inline bool is_feat_specres_present(void)
+{
+ return EXTRACT(ID_AA64ISAR1_SPECRES, read_id_aa64isar1_el1())
+ == ID_AA64ISAR1_SPECRES_SUPPORTED;
+}
+
+static inline bool is_feat_tlbirange_present(void)
+{
+ return EXTRACT(ID_AA64ISAR0_TLB, read_id_aa64isar0_el1())
+ == ID_AA64ISAR0_TLBIRANGE_SUPPORTED;
+}
+
+static inline bool is_feat_tlbios_present(void)
+{
+ return EXTRACT(ID_AA64ISAR0_TLB, read_id_aa64isar0_el1())
+ != ID_AA64ISAR0_TLB_NOT_SUPPORTED;
+}
+
+static inline bool is_feat_dpb_present(void)
+{
+ return EXTRACT(ID_AA64ISAR1_DPB, read_id_aa64isar1_el1())
+ >= ID_AA64ISAR1_DPB_SUPPORTED;
+}
+
+static inline bool is_feat_dpb2_present(void)
+{
+ return EXTRACT(ID_AA64ISAR1_DPB, read_id_aa64isar1_el1())
+ >= ID_AA64ISAR1_DPB2_SUPPORTED;
+}
+
+static inline bool is_feat_ls64_present(void)
+{
+ return EXTRACT(ID_AA64ISAR1_LS64, read_id_aa64isar1_el1())
+ >= ID_AA64ISAR1_LS64_SUPPORTED;
+}
+
+static inline bool is_feat_ls64_v_present(void)
+{
+ return EXTRACT(ID_AA64ISAR1_LS64, read_id_aa64isar1_el1())
+ >= ID_AA64ISAR1_LS64_V_SUPPORTED;
+}
+
+static inline bool is_feat_ls64_accdata_present(void)
+{
+ return EXTRACT(ID_AA64ISAR1_LS64, read_id_aa64isar1_el1())
+ >= ID_AA64ISAR1_LS64_ACCDATA_SUPPORTED;
+}
+
+static inline bool is_feat_ras_present(void)
+{
+ return EXTRACT(ID_AA64PFR0_RAS, read_id_aa64pfr0_el1())
+ == ID_AA64PFR0_RAS_SUPPORTED;
+}
+
+static inline bool is_feat_rasv1p1_present(void)
+{
+ return (EXTRACT(ID_AA64PFR0_RAS, read_id_aa64pfr0_el1())
+ == ID_AA64PFR0_RASV1P1_SUPPORTED)
+ || (is_feat_ras_present() &&
+ (EXTRACT(ID_AA64PFR1_RAS_FRAC, read_id_aa64pfr1_el1())
+ == ID_AA64PFR1_RASV1P1_SUPPORTED))
+ || (EXTRACT(ID_PFR0_EL1_RAS, read_id_pfr0_el1())
+ == ID_PFR0_EL1_RASV1P1_SUPPORTED)
+ || ((EXTRACT(ID_PFR0_EL1_RAS, read_id_pfr0_el1())
+ == ID_PFR0_EL1_RAS_SUPPORTED) &&
+ (EXTRACT(ID_PFR2_EL1_RAS_FRAC, read_id_pfr2_el1())
+ == ID_PFR2_EL1_RASV1P1_SUPPORTED));
+}
+
+static inline bool is_feat_gicv3_gicv4_present(void)
+{
+ return EXTRACT(ID_AA64PFR0_GIC, read_id_aa64pfr0_el1())
+ == ID_AA64PFR0_GICV3_GICV4_SUPPORTED;
+}
+
+static inline bool is_feat_csv2_present(void)
+{
+ return EXTRACT(ID_AA64PFR0_CSV2, read_id_aa64pfr0_el1())
+ == ID_AA64PFR0_CSV2_SUPPORTED;
+}
+
+static inline bool is_feat_csv2_2_present(void)
+{
+ return EXTRACT(ID_AA64PFR0_CSV2, read_id_aa64pfr0_el1())
+ == ID_AA64PFR0_CSV2_2_SUPPORTED;
+}
+
+static inline bool is_feat_csv2_1p1_present(void)
+{
+ return is_feat_csv2_present() &&
+ (EXTRACT(ID_AA64PFR1_CSV2_FRAC, read_id_aa64pfr1_el1())
+ == ID_AA64PFR1_CSV2_1P1_SUPPORTED);
+}
+
+static inline bool is_feat_csv2_1p2_present(void)
+{
+ return is_feat_csv2_present() &&
+ (EXTRACT(ID_AA64PFR1_CSV2_FRAC, read_id_aa64pfr1_el1())
+ == ID_AA64PFR1_CSV2_1P2_SUPPORTED);
+}
+
+static inline bool is_feat_lor_present(void)
+{
+ return EXTRACT(ID_AA64MMFR1_EL1_LO, read_id_aa64mmfr1_el1())
+ != ID_AA64MMFR1_EL1_LOR_NOT_SUPPORTED;
+}
+
#endif /* ARCH_FEATURES_H */