Add test for mem_protect_check_range

This is an optional PSCI feature that allows the caller to
ask if some specific memory region is protected by the mem_protect
feature.

Change-Id: I75d4a6402d9c4db1bc4c266746e58cc96b73b91c
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

1 files changed, 85 insertions, 0 deletions

diff --git a/tests/runtime_services/standard_service/psci/api_tests/mem_protect_check/mem_protect_check.c b/tests/runtime_services/standard_service/psci/api_tests/mem_protect_check/mem_protect_check.c
new file mode 100644
index 0000000..fd78e67
--- /dev/null
+++ b/tests/runtime_services/standard_service/psci/api_tests/mem_protect_check/mem_protect_check.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <psci.h>
+#include <stdlib.h>
+#include <test_helpers.h>
+#include <tftf_lib.h>
+
+/*
+ * DRAM_SIZE is the size of the full DRAM1, but mem_protect only protects
+ * the non-secure part of it.
+ */
+#define SECURE_CARVEOUT_SIZE	DRAM_TZ_SIZE
+#define MAX_SIZE 		(DRAM_SIZE - SECURE_CARVEOUT_SIZE)
+#define MAX_ADDR		(DRAM_SIZE + MAX_SIZE)
+
+/*
+ * Test to verify that mem_protect_check_range returns correct answer
+ * for known memory locations.
+ *
+ * Returns:
+ *         TEST_RESULT_SUCCESS : When all the checks return the expected value
+ *         TEST_RESULT_FAIL : when some check fails or return an unepected value
+ */
+test_result_t test_mem_protect_check(void)
+{
+	int ret;
+	static int dummy;
+	struct {
+		uintptr_t addr;
+		size_t size;
+		int expected;
+	} *bp, check[] = {
+		{-1, 1, PSCI_E_DENIED},
+		{1, -1, PSCI_E_DENIED},
+		{-1, 0, PSCI_E_DENIED},
+		{0, 0x100, PSCI_E_DENIED},
+
+		{DRAM_BASE, 0, PSCI_E_DENIED},
+		{DRAM_BASE, -1, PSCI_E_DENIED},
+		{DRAM_BASE, 1, PSCI_E_SUCCESS},
+		{DRAM_BASE, MAX_SIZE-1, PSCI_E_SUCCESS},
+		{MAX_ADDR-1, 1, PSCI_E_SUCCESS},
+		{MAX_ADDR, 1, PSCI_E_DENIED},
+
+		{(uintptr_t) &dummy, sizeof(dummy), PSCI_E_SUCCESS},
+	};
+
+	ret = tftf_get_psci_feature_info(SMC_PSCI_MEM_PROTECT_CHECK);
+	if (ret == PSCI_E_NOT_SUPPORTED)
+		return TEST_RESULT_SKIPPED;
+
+	for (bp = check; bp < &check[ARRAY_SIZE(check)]; ++bp) {
+		if (psci_mem_protect_check(bp->addr, bp->size) != bp->expected)
+			return TEST_RESULT_FAIL;
+	}
+
+	return TEST_RESULT_SUCCESS;
+}