feat(pmu): add PMU support for Realms
This patch adds support for using PMU in Realms.
It adds 'bool pmu_enabled' and 'unsigned int pmu_num_cnts'
variables in 'struct rd' and 'struct rec.realm_info'.
Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>
Change-Id: I13aad600a0215ba66d25be12ede5f4b86e6b018a
diff --git a/lib/arch/include/arch_features.h b/lib/arch/include/arch_features.h
index 23fe6c0..8efed1e 100644
--- a/lib/arch/include/arch_features.h
+++ b/lib/arch/include/arch_features.h
@@ -51,7 +51,7 @@
/*
* Check if FEAT_LPA2 is implemented.
- * 4KB granule at stage 2 supports 52-bit input and output addresses:
+ * 4KB granule at stage 2 supports 52-bit input and output addresses:
* ID_AA64MMFR0_EL1.TGran4_2 bits [43:40]: 0b0011
*/
static inline bool is_feat_lpa2_4k_present(void)
@@ -60,6 +60,16 @@
read_id_aa64mmfr0_el1()) == ID_AA64MMFR0_EL1_TGRAN4_2_LPA2);
}
+/*
+ * Returns Performance Monitors Extension version.
+ * ID_AA64DFR0_EL1.PMUVer, bits [11:8]:
+ * 0b0000: Performance Monitors Extension not implemented
+ */
+static inline unsigned int read_pmu_version(void)
+{
+ return EXTRACT(ID_AA64DFR0_EL1_PMUVer, read_id_aa64dfr0_el1());
+}
+
unsigned int arch_feat_get_pa_width(void);
#endif /* ARCH_FEATURES_H */