Define registers for FEAT_RNG support
Add ISAR0 feature register read helper, location
of FEAT_RNG bits, feature support helper and the
rndr/rndrrs register read helpers.
Signed-off-by: Tomas Pilar <tomas@nuviainc.com>
Change-Id: I2a785a36f62a917548e55892ce92fa8b72fcb99d
diff --git a/include/arch/aarch64/arch_features.h b/include/arch/aarch64/arch_features.h
index 6b5d326..671b3dc 100644
--- a/include/arch/aarch64/arch_features.h
+++ b/include/arch/aarch64/arch_features.h
@@ -76,6 +76,12 @@
ID_AA64MMFR0_EL1_ECV_MASK);
}
+static inline bool is_armv8_5_rng_present(void)
+{
+ return ((read_id_aa64isar0_el1() >> ID_AA64ISAR0_RNDR_SHIFT) &
+ ID_AA64ISAR0_RNDR_MASK);
+}
+
/*
* Return MPAM version:
*