feat(sme): add basic SME tests
This test enters streaming mode and iterates through supported SME
vector lengths to ensure that EL3 has properly enabled SME for use at
lower non-secure ELs. If FA64 is present, it attempts to execute an
illegal instruction.
Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: Ic80a1e5652a88261524778329d3bc99901a799d8
diff --git a/include/lib/extensions/sme.h b/include/lib/extensions/sme.h
new file mode 100644
index 0000000..5a6cc43
--- /dev/null
+++ b/include/lib/extensions/sme.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef AMU_H
+#define AMU_H
+
+#define SME_SMCR_LEN_MAX U(0x1FF)
+
+bool feat_sme_supported(void);
+bool feat_sme_fa64_supported(void);
+int sme_enable(void);
+void sme_smstart(bool enable_za);
+void sme_smstop(bool disable_za);
+
+/* Assembly function prototypes */
+uint64_t sme_rdvl_1(void);
+void sme_try_illegal_instruction(void);
+
+#endif /* AMU_H */