feat(afp): add a test for Advanced floating-point
This test is to ensure that TFTF is allowed to write the FPCR register
bits to control the floating-point operation when FEAT_AFP is
implemented.
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I21ea288e698bbe706aac55740e28d5f6ccb700dc
diff --git a/tftf/tests/extensions/afp/test_afp.c b/tftf/tests/extensions/afp/test_afp.c
new file mode 100644
index 0000000..625d9cf
--- /dev/null
+++ b/tftf/tests/extensions/afp/test_afp.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2022, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <test_helpers.h>
+
+test_result_t test_afp_support(void)
+{
+ SKIP_TEST_IF_AARCH32();
+
+#ifdef __aarch64__
+ test_result_t ret;
+ uint64_t saved_fpcr, fpcr;
+
+ SKIP_TEST_IF_AFP_NOT_SUPPORTED();
+
+ saved_fpcr = read_fpcr();
+ /* Write advanced floating point controlling bits */
+ write_fpcr(saved_fpcr | FPCR_FIZ_BIT | FPCR_AH_BIT | FPCR_NEP_BIT);
+
+ fpcr = read_fpcr();
+ /* Check if all bits got written successfully */
+ if ((fpcr | ~(FPCR_FIZ_BIT | FPCR_AH_BIT | FPCR_NEP_BIT)) == ~0ULL) {
+ ret = TEST_RESULT_SUCCESS;
+ } else {
+ ret = TEST_RESULT_FAIL;
+ }
+
+ write_fpcr(saved_fpcr);
+
+ return ret;
+#endif /* __aarch64__ */
+}
diff --git a/tftf/tests/tests-cpu-extensions.mk b/tftf/tests/tests-cpu-extensions.mk
index 5845212..4600e7f 100644
--- a/tftf/tests/tests-cpu-extensions.mk
+++ b/tftf/tests/tests-cpu-extensions.mk
@@ -5,6 +5,7 @@
#
TESTS_SOURCES += $(addprefix tftf/tests/, \
+ extensions/afp/test_afp.c \
extensions/amu/test_amu.c \
extensions/ecv/test_ecv.c \
extensions/fgt/test_fgt.c \
diff --git a/tftf/tests/tests-cpu-extensions.xml b/tftf/tests/tests-cpu-extensions.xml
index 3d18f84..97826cc 100644
--- a/tftf/tests/tests-cpu-extensions.xml
+++ b/tftf/tests/tests-cpu-extensions.xml
@@ -25,6 +25,7 @@
<testcase name="Use trace system Registers" function="test_sys_reg_trace_enabled" />
<testcase name="SME support" function="test_sme_support" />
<testcase name="SPE support" function="test_spe_support" />
+ <testcase name="AFP support" function="test_afp_support" />
</testsuite>
<testsuite name="ARM_ARCH_SVC" description="Arm Architecture Service tests">