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;
+}
diff --git a/tftf/tests/tests-cpu-extensions.mk b/tftf/tests/tests-cpu-extensions.mk
index a4e5d11..e5f4f79 100644
--- a/tftf/tests/tests-cpu-extensions.mk
+++ b/tftf/tests/tests-cpu-extensions.mk
@@ -13,6 +13,7 @@
extensions/sve/sve_operations.S \
extensions/sve/test_sve.c \
extensions/trbe/test_trbe.c \
+ extensions/trf/test_trf.c \
runtime_services/arm_arch_svc/smccc_arch_soc_id.c \
runtime_services/arm_arch_svc/smccc_arch_workaround_1.c \
runtime_services/arm_arch_svc/smccc_arch_workaround_2.c \
diff --git a/tftf/tests/tests-cpu-extensions.xml b/tftf/tests/tests-cpu-extensions.xml
index d6b3d00..a0d2c9a 100644
--- a/tftf/tests/tests-cpu-extensions.xml
+++ b/tftf/tests/tests-cpu-extensions.xml
@@ -21,6 +21,7 @@
<testcase name="Use FGT Registers" function="test_fgt_enabled" />
<testcase name="Use ECV Registers" function="test_ecv_enabled" />
<testcase name="Use trace buffer control Registers" function="test_trbe_enabled" />
+ <testcase name="Use trace filter control Registers" function="test_trf_enabled" />
</testsuite>
<testsuite name="ARM_ARCH_SVC" description="Arm Architecture Service tests">