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-rw-r--r--include/arch/aarch64/arch_features.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/arch/aarch64/arch_features.h b/include/arch/aarch64/arch_features.h
index 2b09ba07f9..9bf43bf85a 100644
--- a/include/arch/aarch64/arch_features.h
+++ b/include/arch/aarch64/arch_features.h
@@ -17,4 +17,10 @@ static inline bool is_armv8_2_ttcnp_present(void)
ID_AA64MMFR2_EL1_CNP_MASK) != 0U;
}
+static inline bool is_armv8_4_ttst_present(void)
+{
+ return ((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_ST_SHIFT) &
+ ID_AA64MMFR2_EL1_ST_MASK) == 1U;
+}
+
#endif /* ARCH_FEATURES_H */