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:
  *