tests: settings: its: enable functional tests for TF-M ITS

Run on mps2/an521/cpu0/ns.

Signed-off-by: Dmitrii Sharshakov <[email protected]>

Author: dsseng

tests/subsys/settings/functional/psa/CMakeLists.txt

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(functional_psa)
+
+# The code is in the library common to several tests.
+target_sources(app PRIVATE settings_test_psa.c)
+
+add_subdirectory(../src func_test_bindir)

tests/subsys/settings/functional/psa/boards/mps2_an521_cpu0_ns.conf

@@ -0,0 +1 @@
+CONFIG_TFM_ITS_MAX_ASSET_SIZE=512

tests/subsys/settings/functional/psa/prj.conf

@@ -0,0 +1,7 @@
+CONFIG_ZTEST=y
+
+CONFIG_SETTINGS=y
+CONFIG_SETTINGS_RUNTIME=y
+
+# 10 is not sufficient for the test
+CONFIG_SETTINGS_TFM_ITS_NUM_ENTRIES=11

tests/subsys/settings/functional/psa/settings_test_psa.c

@@ -0,0 +1,6 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+/* Copyright (c) 2022 Dmitrii Sharshakov <[email protected]> */
+
+#include <zephyr/ztest.h>
+
+ZTEST_SUITE(settings_functional, NULL, NULL, NULL, NULL, NULL);

tests/subsys/settings/functional/psa/testcase.yaml

@@ -0,0 +1,12 @@
+tests:
+  settings.functional.psa-its:
+    platform_allow:
+      - mps2/an521/cpu0/ns
+    integration_platforms:
+      - mps2/an521/cpu0/ns
+    tags:
+      - settings
+      - trusted-firmware-m
+    extra_args:
+      - CONFIG_SETTINGS_TFM_ITS=y
+      - CONFIG_TFM_ITS_MAX_ASSET_SIZE_OVERRIDE=y

tests/subsys/settings/functional/src/settings_basic_test.c

@@ -24,6 +24,11 @@ LOG_MODULE_REGISTER(settings_basic_test);
 #elif defined(CONFIG_SETTINGS_FILE)
 #include <zephyr/fs/fs.h>
 #include <zephyr/fs/littlefs.h>
+#elif defined(CONFIG_SETTINGS_TFM_ITS)
+#include <psa/internal_trusted_storage.h>
+#include <zephyr/psa/its_ids.h>
+
+#include "settings_its_priv.h"
 #else
 #error "Settings backend not selected"
 #endif
@@ -38,7 +43,17 @@ LOG_MODULE_REGISTER(settings_basic_test);
  */
 ZTEST(settings_functional, test_clear_settings)
 {
-#if !defined(CONFIG_SETTINGS_FILE)
+#if defined(CONFIG_SETTINGS_TFM_ITS)
+	psa_status_t status;
+	psa_storage_uid_t uid = ZEPHYR_PSA_SETTINGS_TFM_ITS_UID_RANGE_BEGIN;
+
+	/* Remove all potentially accessed ITS entries in the UID range */
+	for (; uid < (sizeof(entries) / CONFIG_TFM_ITS_MAX_ASSET_SIZE) + 1; uid++) {
+		status = psa_its_remove(uid);
+		zassert_true((status == PSA_SUCCESS) || (status == PSA_ERROR_DOES_NOT_EXIST),
+			"psa_its_remove failed");
+	}
+#elif !defined(CONFIG_SETTINGS_FILE)
 	const struct flash_area *fap;
 	int rc;