feat(mpam): add MPAM system registers access test
Added a test which reads MPAM system registers to ensure that
EL3 is giving permission to Non-secure EL2 to access these registers.
Change-Id: Ie701a19c9682df6d6aeaec086954e275afff1843
Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
diff --git a/tftf/tests/extensions/mpam/test_mpam.c b/tftf/tests/extensions/mpam/test_mpam.c
new file mode 100644
index 0000000..eb40bc5
--- /dev/null
+++ b/tftf/tests/extensions/mpam/test_mpam.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2024, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <test_helpers.h>
+#include <tftf_lib.h>
+#include <tftf.h>
+
+/* EL3 is expected to allow access to MPAM system registers from EL2.
+ * Reading these registers will trap to EL3 and crash when EL3 has not
+ * allowed access.
+ */
+
+test_result_t test_mpam_reg_access(void)
+{
+ SKIP_TEST_IF_AARCH32();
+
+#ifdef __aarch64__
+ SKIP_TEST_IF_MPAM_NOT_SUPPORTED();
+
+ read_mpamidr_el1();
+ read_mpam2_el2();
+
+ return TEST_RESULT_SUCCESS;
+#endif
+}
diff --git a/tftf/tests/tests-cpu-extensions.mk b/tftf/tests/tests-cpu-extensions.mk
index 0b1839a..b0af1a3 100644
--- a/tftf/tests/tests-cpu-extensions.mk
+++ b/tftf/tests/tests-cpu-extensions.mk
@@ -1,5 +1,5 @@
#
-# Copyright (c) 2018-2023, Arm Limited. All rights reserved.
+# Copyright (c) 2018-2024, Arm Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@@ -11,6 +11,7 @@
extensions/ecv/test_ecv.c \
extensions/fgt/test_fgt.c \
extensions/pmuv3/test_pmuv3.c \
+ extensions/mpam/test_mpam.c \
extensions/mte/test_mte.c \
extensions/pauth/test_pauth.c \
extensions/sme/test_sme.c \
diff --git a/tftf/tests/tests-cpu-extensions.xml b/tftf/tests/tests-cpu-extensions.xml
index 3935911..3b93344 100644
--- a/tftf/tests/tests-cpu-extensions.xml
+++ b/tftf/tests/tests-cpu-extensions.xml
@@ -1,7 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<!--
- Copyright (c) 2018-2023, Arm Limited. All rights reserved.
+ Copyright (c) 2018-2024, Arm Limited. All rights reserved.
SPDX-License-Identifier: BSD-3-Clause
-->
@@ -16,6 +16,7 @@
<testcase name="Use Pointer Authentication Instructions" function="test_pauth_instructions" />
<testcase name="Check for Pointer Authentication key leakage from EL3" function="test_pauth_leakage" />
<testcase name="Check for Pointer Authentication key leakage from TSP" function="test_pauth_leakage_tsp" />
+ <testcase name="Access MPAM registers" function="test_mpam_reg_access" />
<testcase name="Use MTE Instructions" function="test_mte_instructions" />
<testcase name="Check for MTE register leakage" function="test_mte_leakage" />
<testcase name="Use FGT Registers" function="test_fgt_enabled" />