feat(trf): add trace filter control registers access test
Added a test to read trace filter control registers to ensure that EL3
is giving permission to non-secure EL2 to access these registers.
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I9354d8592bd187206add717b9d3b0206382a06d3
diff --git a/tftf/tests/extensions/trf/test_trf.c b/tftf/tests/extensions/trf/test_trf.c
new file mode 100644
index 0000000..eeb967d
--- /dev/null
+++ b/tftf/tests/extensions/trf/test_trf.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <string.h>
+
+#include <test_helpers.h>
+#include <tftf_lib.h>
+#include <tftf.h>
+
+/*
+ * EL3 is expected to allow access to trace filter control registers from EL2.
+ * Reading these register will trap to EL3 and crash when EL3 has not
+ * allowed access.
+ */
+test_result_t test_trf_enabled(void)
+{
+ SKIP_TEST_IF_TRF_NOT_SUPPORTED();
+
+#ifdef __aarch64__
+ read_trfcr_el1();
+ read_trfcr_el2();
+#else
+ read_htrfcr();
+ read_trfcr();
+#endif /* __aarch64__ */
+
+ return TEST_RESULT_SUCCESS;
+}