CMake platform: remove MBED_PATH, use standard variables

As we still use target labels, TFM is not visible to CMake. Protect include of their scripts with the same mechanism.

Author: 0xc0170

platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_TFM/TARGET_TFM_LATEST/CMakeLists.txt

@@ -39,3 +39,5 @@ target_sources(mbed-psa
         src/tfm_platform_ipc_api.c
         src/tfm_ps_ipc_api.c
 )
+
+set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH};${CMAKE_CURRENT_SOURCE_DIR}/scripts")

platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_TFM/TARGET_TFM_LATEST/scripts/mbed_set_post_build_tfm.cmake

@@ -1,7 +1,7 @@
 # Copyright (c) 2021 ARM Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-include(${MBED_PATH}/tools/cmake/mbed_set_post_build.cmake)
+include(mbed_set_post_build)
 
 #
 # Sign TF-M secure and non-secure images and combine them with the bootloader
@@ -17,7 +17,7 @@ function(mbed_post_build_tfm_sign_image
     set(mbed_target_name ${mbed_target})
     set(post_build_command
         COMMAND ${Python3_EXECUTABLE}
-            ${MBED_PATH}/platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_TFM/TARGET_TFM_LATEST/scripts/generate_mbed_image.py
+            ${CMAKE_CURRENT_LIST_DIR}/scripts/generate_mbed_image.py
             --tfm-target ${tfm_target}
             --target-path ${target_path}
             --secure-bin ${secure_bin}

targets/TARGET_ARM_SSG/TARGET_MUSCA_B1/CMakeLists.txt

@@ -1,7 +1,16 @@
 # Copyright (c) 2020-2021 ARM Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-include(${mbed-os_SOURCE_DIR}/platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_TFM/TARGET_TFM_LATEST/scripts/mbed_set_post_build_tfm.cmake)
+if("TFM" IN_LIST MBED_TARGET_LABELS)
+    include(mbed_set_post_build_tfm)
+
+    mbed_post_build_tfm_sign_image(
+        ARM_MUSCA_B1
+        musca_b1
+        ${CMAKE_CURRENT_SOURCE_DIR}
+        ${CMAKE_CURRENT_SOURCE_DIR}/tfm_s.bin
+    )
+endif()
 
 add_library(mbed-arm-musca-b1 INTERFACE)
 
@@ -54,10 +63,3 @@ target_link_libraries(mbed-arm-musca-b1
         ${CMAKE_CURRENT_SOURCE_DIR}/s_veneers.o
         mbed-arm-ssg
 )
-
-mbed_post_build_tfm_sign_image(
-    ARM_MUSCA_B1
-    musca_b1
-    ${CMAKE_CURRENT_SOURCE_DIR}
-    ${CMAKE_CURRENT_SOURCE_DIR}/tfm_s.bin
-)

targets/TARGET_ARM_SSG/TARGET_MUSCA_S1/CMakeLists.txt

@@ -1,7 +1,16 @@
 # Copyright (c) 2020-2021 ARM Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-include(${mbed-os_SOURCE_DIR}/platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_TFM/TARGET_TFM_LATEST/scripts/mbed_set_post_build_tfm.cmake)
+if("TFM" IN_LIST MBED_TARGET_LABELS)
+    include(mbed_set_post_build_tfm)
+
+    mbed_post_build_tfm_sign_image(
+        ARM_MUSCA_S1
+        musca_s1
+        ${CMAKE_CURRENT_SOURCE_DIR}
+        ${CMAKE_CURRENT_SOURCE_DIR}/tfm_s.bin
+    )
+endif()
 
 add_library(mbed-arm-musca-s1 INTERFACE)
 
@@ -60,10 +69,3 @@ target_link_libraries(mbed-arm-musca-s1
         ${CMAKE_CURRENT_SOURCE_DIR}/s_veneers.o
         mbed-arm-ssg
 )
-
-mbed_post_build_tfm_sign_image(
-    ARM_MUSCA_S1
-    musca_s1
-    ${CMAKE_CURRENT_SOURCE_DIR}
-    ${CMAKE_CURRENT_SOURCE_DIR}/tfm_s.bin
-)