psa: Add a script to validate PSA targets

Add a script to parse `targets.json` to identify PSA targets and ensure
mandatory parameters are configured correctly for all PSA targets.

Signed-off-by: Devaraj Ranganna <devaraj.ranganna@arm.com>

tools/test/psa/psa_target_config_test.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+"""
+Copyright (c) 2019-2020 ARM Limited. All rights reserved.
+
+SPDX-License-Identifier: Apache-2.0
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+"""
+
+
+import pytest
+
+from tools.targets import TARGETS
+
+def test_psa_target_attributes():
+    psa_targets = (tar for tar in TARGETS
+                   if tar.is_TFM_target)
+
+    for tar in psa_targets:
+        msg = "tfm_target_name attribute cannot be empty"
+        assert(tar.tfm_target_name != ""), msg
+        msg = "tfm_bootloader_supported attribute cannot be empty"
+        assert(tar.tfm_bootloader_supported != ""), msg
+        msg = "tfm_default_toolchain attribute cannot be empty"
+        assert(tar.tfm_default_toolchain != ""), msg
+        msg = "tfm_supported_toolchains attribute cannot be empty"
+        assert(tar.tfm_supported_toolchains != ""), msg
+        msg = "delivery_dir attribute cannot be empty"
+        assert(tar.tfm_delivery_dir != ""), msg
+