core: arm: add helper functions for checking CE support

Add helper functions for checking implementation of SHA1, SHA256, SHA512, SHA3, SM3, SM4 instructions. Signed-off-by: Igor Opaniuk <[email protected]>
igoropaniuk · Feb 17, 2024 · e31bcd7 · e31bcd7
1 parent a3d8369
commit e31bcd7
Showing 1 changed file with 64 additions and 0 deletions.
diff --git a/core/arch/arm/include/arm.h b/core/arch/arm/include/arm.h
@@ -187,6 +187,70 @@ static inline bool feat_crc32_implemented(void)
 #endif
 }
 
+static inline bool feat_aes_implemented(void)
+{
+#ifdef ARM32
+	return read_id_isar5() & ID_ISAR5_AES;
+#else
+	return read_id_aa64isar0_el1() & ID_AA64ISAR0_AES;
+#endif
+}
+
+static inline bool feat_sha1_implemented(void)
+{
+#ifdef ARM32
+	return read_id_isar5() & ID_ISAR5_SHA1;
+#else
+	return read_id_aa64isar0_el1() & ID_AA64ISAR0_SHA1;
+#endif
+}
+
+static inline bool feat_sha256_implemented(void)
+{
+#ifdef ARM32
+	return read_id_isar5() & ID_ISAR5_SHA2;
+#else
+	return read_id_aa64isar0_el1() & ID_AA64ISAR0_SHA2;
+#endif
+}
+
+static inline bool feat_sha512_implemented(void)
+{
+#ifdef ARM32
+	return false;
+#else
+	return ((read_id_aa64isar0_el1() & ID_AA64ISAR0_SHA2) >>
+		ID_AA64ISAR0_SHA2_SHIFT) == ID_AA64ISAR0_SHA2_SHA512_FEAT;
+#endif
+}
+
+static inline bool feat_sha3_implemented(void)
+{
+#ifdef ARM32
+	return false;
+#else
+	return read_id_aa64isar0_el1() & ID_AA64ISAR0_SHA3;
+#endif
+}
+
+static inline bool feat_sm3_implemented(void)
+{
+#ifdef ARM32
+	return false;
+#else
+	return read_id_aa64isar0_el1() & ID_AA64ISAR0_SM3;
+#endif
+}
+
+static inline bool feat_sm4_implemented(void)
+{
+#ifdef ARM32
+	return false;
+#else
+	return read_id_aa64isar0_el1() & ID_AA64ISAR0_SM4;
+#endif
+}
+
 static inline bool feat_pauth_is_implemented(void)
 {
 #ifdef ARM32