[nrf noup] tf-m: Refactor support for external PSA core

nrf-quash! [nrf noup] tf-m: Enable support for external PSA core

The cmake files which handle the external PSA core are in the
nrf_security folder of sdk-nrf. Instead of using a relative path
to include these files into the TF-M build use the new variable
which points to the tfm_boards folder in sdk-nrf.

Ref: NCSDK-36186

Signed-off-by: Georgios Vasilakis <georgios.vasilakis@nordicsemi.no>

Author: Vge0rge

cmake/install.cmake

@@ -83,7 +83,7 @@ endif()
 
 if (TFM_PARTITION_CRYPTO)
         if(PSA_CRYPTO_EXTERNAL_CORE)
-                include(${TARGET_PLATFORM_PATH}/../external_core_install.cmake)
+                include(${TFM_BOARDS_NRF_DIR}/external_core_install.cmake)
                 install(FILES       ${INTERFACE_INC_DIR}/tfm_crypto_defs.h
                         DESTINATION ${INSTALL_INTERFACE_INC_DIR})
         else()

cmake/spe-CMakeLists.cmake

@@ -40,7 +40,7 @@ target_sources(tfm_api_ns
 
 # Include interface headers exported by TF-M
 if(PSA_CRYPTO_EXTERNAL_CORE)
-    include(${TARGET_PLATFORM_PATH}/../external_core.cmake)
+    include(${TFM_BOARDS_NRF_DIR}/external_core.cmake)
 else()
     target_include_directories(tfm_api_ns
         PUBLIC

interface/CMakeLists.txt

@@ -20,7 +20,7 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/include/psa/framework_feature.h.in
 add_library(psa_interface INTERFACE)
 
 if(PSA_CRYPTO_EXTERNAL_CORE)
-    include(${TARGET_PLATFORM_PATH}/../external_core.cmake)
+    include(${TFM_BOARDS_NRF_DIR}/external_core.cmake)
 else()
     target_include_directories(psa_interface
         INTERFACE

secure_fw/partitions/crypto/CMakeLists.txt

@@ -22,7 +22,7 @@ target_include_directories(psa_crypto_config
 )
 
 if(PSA_CRYPTO_EXTERNAL_CORE)
-    include(${TARGET_PLATFORM_PATH}/../external_core.cmake)
+    include(${TFM_BOARDS_NRF_DIR}/external_core.cmake)
 else()
     target_compile_definitions(psa_crypto_config
     INTERFACE
@@ -34,7 +34,7 @@ endif()
 # This defines the configuration files for the users of the library directly
 add_library(psa_crypto_library_config INTERFACE)
 if(PSA_CRYPTO_EXTERNAL_CORE)
-    include(${TARGET_PLATFORM_PATH}/../external_core.cmake)
+    include(${TFM_BOARDS_NRF_DIR}/external_core.cmake)
 else()
     target_compile_definitions(psa_crypto_library_config
         INTERFACE
@@ -92,7 +92,7 @@ target_include_directories(tfm_psa_rot_partition_crypto
 )
 
 if(PSA_CRYPTO_EXTERNAL_CORE)
-    include(${TARGET_PLATFORM_PATH}/../external_core.cmake)
+    include(${TFM_BOARDS_NRF_DIR}/external_core.cmake)
 else()
     target_include_directories(tfm_psa_rot_partition_crypto
         PRIVATE
@@ -141,7 +141,7 @@ target_link_libraries(tfm_config
 ############################### MBEDCRYPTO #####################################
 add_library(crypto_service_mbedcrypto_config INTERFACE)
 if(PSA_CRYPTO_EXTERNAL_CORE)
-    include(${TARGET_PLATFORM_PATH}/../external_core.cmake)
+    include(${TFM_BOARDS_NRF_DIR}/external_core.cmake)
 else()
     target_compile_definitions(crypto_service_mbedcrypto_config
         INTERFACE
@@ -200,7 +200,7 @@ target_include_directories(psa_crypto_library_config
 )
 
 if(PSA_CRYPTO_EXTERNAL_CORE)
-    include(${TARGET_PLATFORM_PATH}/../external_core.cmake)
+    include(${TFM_BOARDS_NRF_DIR}/external_core.cmake)
 else()
     target_include_directories(${MBEDTLS_TARGET_PREFIX}mbedcrypto
         PUBLIC

secure_fw/partitions/lib/runtime/CMakeLists.txt

@@ -17,7 +17,7 @@ target_include_directories(tfm_sprt
 )
 
 if(PSA_CRYPTO_EXTERNAL_CORE)
-    include(${TARGET_PLATFORM_PATH}/../external_core.cmake)
+    include(${TFM_BOARDS_NRF_DIR}/external_core.cmake)
 endif()
 
 target_sources(tfm_sprt