feat(tcr2): add asymmetric feature testing for FEAT_TCR2
Change-Id: I07b27ff58ccf471ccc43643141e2dfe70083fd13
Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
diff --git a/include/lib/aarch64/arch.h b/include/lib/aarch64/arch.h
index 8081ff4..a1dca21 100644
--- a/include/lib/aarch64/arch.h
+++ b/include/lib/aarch64/arch.h
@@ -395,6 +395,12 @@
#define ID_AA64MMFR2_EL1_CNP_SHIFT U(0)
#define ID_AA64MMFR2_EL1_CNP_MASK ULL(0xf)
+/* ID_AA64MMFR3_EL1 definitions */
+#define ID_AA64MMFR3_EL1 S3_0_C0_C7_3
+
+#define ID_AA64MMFR3_TCR2_SHIFT U(0)
+#define ID_AA64MMFR3_TCR2_MASK ULL(0xf)
+
/* ID_AA64PFR1_EL1 definitions */
#define ID_AA64PFR1_EL1_SSBS_SHIFT U(4)
#define ID_AA64PFR1_EL1_SSBS_MASK ULL(0xf)
@@ -1347,6 +1353,12 @@
#define BRBIDR0_EL1 S2_1_C9_C2_0
/*******************************************************************************
+ * FEAT_TCR2 - Extended Translation Control Registers
+ ******************************************************************************/
+#define TCR2_EL1 S3_0_C2_C0_3
+#define TCR2_EL2 S3_4_C2_C0_3
+
+/*******************************************************************************
* Armv8.4 - Trace Filter System Registers
******************************************************************************/
#define TRFCR_EL1 S3_0_C1_C2_1
diff --git a/include/lib/aarch64/arch_features.h b/include/lib/aarch64/arch_features.h
index 5822dc4..8a6e4b7 100644
--- a/include/lib/aarch64/arch_features.h
+++ b/include/lib/aarch64/arch_features.h
@@ -256,6 +256,12 @@
return spe_get_version() >= ID_AA64DFR0_SPE;
}
+static inline bool is_feat_tcr2_supported(void)
+{
+ return (((read_id_aa64mmfr3_el1() >> ID_AA64MMFR3_TCR2_SHIFT) &
+ ID_AA64MMFR3_TCR2_MASK) != 0);
+}
+
static inline bool get_feat_pmuv3_supported(void)
{
return (((read_id_aa64dfr0_el1() >> ID_AA64DFR0_PMUVER_SHIFT) &
diff --git a/include/lib/aarch64/arch_helpers.h b/include/lib/aarch64/arch_helpers.h
index 076a9cd..455ae27 100644
--- a/include/lib/aarch64/arch_helpers.h
+++ b/include/lib/aarch64/arch_helpers.h
@@ -623,6 +623,10 @@
/* FEAT_HCX HCRX_EL2 */
DEFINE_RENAME_SYSREG_RW_FUNCS(hcrx_el2, HCRX_EL2)
+/* FEAT_TCR2 TCR2_EL1, TCR2_EL2 */
+DEFINE_RENAME_SYSREG_RW_FUNCS(tcr2_el1, TCR2_EL1)
+DEFINE_RENAME_SYSREG_RW_FUNCS(tcr2_el2, TCR2_EL2)
+
/* Floating point control and status register */
DEFINE_RENAME_SYSREG_RW_FUNCS(fpcr, FPCR)
DEFINE_RENAME_SYSREG_RW_FUNCS(fpsr, FPSR)
@@ -633,6 +637,9 @@
/* ID_PFR2_EL1 */
DEFINE_RENAME_SYSREG_READ_FUNC(id_pfr2_el1, ID_PFR2_EL1)
+/* ID_AA64MMFR3_EL1 */
+DEFINE_RENAME_SYSREG_READ_FUNC(id_aa64mmfr3_el1, ID_AA64MMFR3_EL1)
+
#define IS_IN_EL(x) \
(GET_EL(read_CurrentEl()) == MODE_EL##x)