WIP modules: tf-m: Add local t_cose path

Provide a local path for the t_cose library.
This is needed because TF-M now downloads the
t_cose library by default and we cannot follow
this. Instead of that a fork of the t_cose
was created and it's path is added here.

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

Author: Vge0rge

modules/trusted-firmware-m/CMakeLists.txt

@@ -155,6 +155,18 @@ if(CONFIG_TFM_NFCT_PINS_AS_GPIOS)
   )
 endif()
 
+# Forward an externally-provided T_COSE_PATH to the TF-M build so the upstream
+# tf-m-tests / lib/ext/t_cose fetch_remote_library() step uses a local clone
+# instead of cloning from GitHub at configure time. Setting T_COSE_PATH on the
+# top-level CMake invocation (or earlier in a sample/test CMakeLists.txt) is
+# enough; mirrors the upstream CMSIS_PATH / TF_PSA_CRYPTO_PATH pattern.
+if(T_COSE_PATH)
+  set_property(TARGET zephyr_property_target
+    APPEND PROPERTY TFM_CMAKE_OPTIONS
+    -DT_COSE_PATH=${T_COSE_PATH}
+  )
+endif()
+
 zephyr_include_directories(${ZEPHYR_NRF_MODULE_DIR}/include/tfm)
 
 # Default values from config_base.h in TF-M.

tests/tfm/tfm_psa_test/CMakeLists.txt

@@ -66,6 +66,10 @@ if(NOT DEFINED TFM_PSA_TEST_SUITE)
 endif()
 set(TEST_PSA_API "${TFM_PSA_TEST_SUITE}")
 
+# Use the in-tree nrf_security copy of t_cose instead of having tf-m-tests
+# fetch it from GitHub at configure time.
+set(T_COSE_PATH "${ZEPHYR_NRF_MODULE_DIR}/subsys/nrf_security/src/t_cose")
+
 set_property(TARGET zephyr_property_target
              APPEND PROPERTY TFM_CMAKE_OPTIONS
              -DCONFIG_TFM_TEST_DIR=${TFM_TEST_DIR}
@@ -128,6 +132,7 @@ ExternalProject_Add(tfm_psa_arch_test_app
                 -DCROSS_COMPILE=${TFM_TOOLCHAIN_PATH}/${TFM_TOOLCHAIN_PREFIX}
                 -DPSA_TOOLCHAIN_FILE=${TFM_BINARY_DIR}/api_ns/cmake/${TFM_TOOLCHAIN_NS_FILE}
                 -DQCBOR_PATH${QCBOR_PATH_TYPE}=${CONFIG_TFM_QCBOR_PATH}
+                -DT_COSE_PATH=${T_COSE_PATH}
                 -DCMAKE_BUILD_TYPE=${tfm_ns_CMAKE_BUILD_TYPE}
                 -DTEST_PSA_API=${TEST_PSA_API}
                 -DZEPHYR_NRF_MODULE_DIR=${ZEPHYR_NRF_MODULE_DIR}