trusted-firmware-m: pass toolchain prefix & path to GCC toolchain

Allow the toolchain path and prefix to be passed via CMake
as user configuration to the GNU ARM Embedded toolchain
configuration file

Signed-off-by: Ioannis Glaropoulos <[email protected]>

Author: ioannisg

CMakeLists.txt

@@ -101,6 +101,8 @@ function(trusted_firmware_build)
                ${TFM_ISOLATION_LEVEL_ARG}
                ${TFM_REGRESSION_ARG}
                -DTFM_TEST_REPO_PATH=${ZEPHYR_TFM_MODULE_DIR}/tf-m-tests
+               -DTFM_TOOLCHAIN_PATH=${TFM_TOOLCHAIN_PATH}
+               -DTFM_TOOLCHAIN_PREFIX=${TFM_TOOLCHAIN_PREFIX}
     BUILD_ALWAYS True
     USES_TERMINAL_BUILD True
     BUILD_BYPRODUCTS ${VENEERS_FILE} ${PSA_API_NS_PATH}

trusted-firmware-m/toolchain_GNUARM.cmake

@@ -10,8 +10,8 @@ set(TFM_CMAKE_TOOLCHAIN_FILE_LOADED YES)
 set(CMAKE_SYSTEM_NAME Generic)
 set(CMAKE_SYSTEM_PROCESSOR arm)
 
-set(CMAKE_C_COMPILER arm-none-eabi-gcc)
-set(CMAKE_ASM_COMPILER arm-none-eabi-gcc)
+set(CMAKE_C_COMPILER "${TFM_TOOLCHAIN_PATH}/bin/${TFM_TOOLCHAIN_PREFIX}-gcc")
+set(CMAKE_ASM_COMPILER "${TFM_TOOLCHAIN_PATH}/bin/${TFM_TOOLCHAIN_PREFIX}-gcc")
 
 # Tell CMake not to try to link executables during its checks
 set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)