app_broker/CMakeLists.txt

#-------------------------------------------------------------------------------
# SPDX-FileCopyrightText: Copyright The TrustedFirmware-M Contributors
#
# SPDX-License-Identifier: BSD-3-Clause
#
#-------------------------------------------------------------------------------
#
# This CMake script is used in a split build only. In the legacy 'single' build
# this file is ignored.
#
cmake_minimum_required(VERSION 3.21)

# This is important to add this SPE subdirectory at first as it
# brings configuration from TF-M build
add_subdirectory(${CONFIG_SPE_PATH} ${CMAKE_BINARY_DIR}/spe)

####################### NS application libraries #######################

# Build all the NS application libraries here under app_broker
# Those NS libraries depend on each other. It is more convenient to sort out the dependencies here.
#
# Those NS libraries also link to libraries exported from TF-M secure build. Specify all the
# dependencies on TF-M exported libraries here, rather than under each NS library folder.
# Therefore, NS library can be shared and re-used in other downstream projects, without specially
# handling the differences of dependencies and paths in NS builds.

# Choose whether to use the TF-M mailbox API or TrustZone API to communicate
# with the SPE based on the TF-M config. If the TF-M config provides both, then
# default to the TrustZone APIs. This default needs to be overridden to do a
# mailbox build on platforms with both agents.
if (TFM_PARTITION_NS_AGENT_MAILBOX AND NOT CONFIG_TFM_USE_TRUSTZONE)
    set(TFM_NS_MAILBOX_API ON  CACHE BOOL "Build NS code for a remote processing element using mailbox APIs")
else()
    set(TFM_NS_MAILBOX_API OFF CACHE BOOL "Build NS code for a remote processing element using mailbox APIs")
endif()

# Interface files exported from TF-M secure build
set(SPE_INSTALL_INTERFACE_SRC    ${CONFIG_SPE_PATH}/interface/src)
set(SPE_INSTALL_INTERFACE_INC    ${CONFIG_SPE_PATH}/interface/include)
# lib path
set(APP_LIB_DIR                  ${CMAKE_CURRENT_LIST_DIR}/../lib)

# OS wrapper library consists of the wrapper layer of RTOSes, such as RTX
add_library(os_wrapper STATIC)

target_sources(os_wrapper
    PRIVATE
        ${CMAKE_CURRENT_LIST_DIR}/os_wrapper_cmsis_rtos_v2.c
        $<$<BOOL:${TFM_NS_MANAGE_NSID}>:${CMAKE_CURRENT_LIST_DIR}/tfm_nsid_map_table.c>
)

target_include_directories(os_wrapper
    PUBLIC
        ${CMAKE_CURRENT_LIST_DIR}/../lib/os_wrapper
        # Some NS files include "os_wrapper/xxx.h" instead
        ${CMAKE_CURRENT_LIST_DIR}/../lib
        # Some OS wrapper header files are exported from TF-M secure build
        ${SPE_INSTALL_INTERFACE_INC}
)

target_link_libraries(os_wrapper
    PRIVATE
        RTX_OS
        tfm_nsid_manager
)

# NSID manager
add_library(tfm_nsid_manager INTERFACE)

target_include_directories(tfm_nsid_manager
    INTERFACE
        ${APP_LIB_DIR}/nsid_manager
)

target_sources(tfm_nsid_manager
    INTERFACE
        $<$<BOOL:${TFM_NS_MANAGE_NSID}>:${APP_LIB_DIR}/nsid_manager/tfm_nsid_manager.c>
)

target_compile_definitions(tfm_nsid_manager
    INTERFACE
        $<$<BOOL:${TFM_NS_MANAGE_NSID}>:TFM_NS_MANAGE_NSID>
        $<$<BOOL:${TEST_NS_MANAGE_NSID}>:TEST_NS_MANAGE_NSID>
)

target_sources(RTX_OS
    INTERFACE
        # Provide TZ context management stub to RTOS if protected by TrustZone
        $<$<NOT:$<BOOL:${TFM_NS_MAILBOX_API}>>:${APP_LIB_DIR}/nsid_manager/tz_shim_layer.c>
        # Provide CMSIS-RTX config implementation
        os_config_cmsis_rtx.c
)

target_link_libraries(RTX_OS
    INTERFACE
        tfm_nsid_manager
)

# Multi-core library
if(TFM_NS_MAILBOX_API)
    add_library(ns_multi_core STATIC)

    target_sources(ns_multi_core
        PRIVATE
            $<$<NOT:$<BOOL:${TFM_MULTI_CORE_NS_OS_MAILBOX_THREAD}>>:${SPE_INSTALL_INTERFACE_SRC}/multi_core/tfm_ns_mailbox.c>
            $<$<BOOL:${TFM_MULTI_CORE_NS_OS_MAILBOX_THREAD}>:${SPE_INSTALL_INTERFACE_SRC}/multi_core/tfm_ns_mailbox_thread.c>
            # NS RTOS specific implementation of NS mailbox
            ${APP_LIB_DIR}/multi_core/tfm_ns_mailbox_rtos_api.c
            $<$<BOOL:${TEST_NS_MULTI_CORE}>:${APP_LIB_DIR}/multi_core/tfm_ns_mailbox_test.c>
            ${SPE_INSTALL_INTERFACE_SRC}/multi_core/tfm_ns_mailbox_common.c
    )

    target_compile_definitions(ns_multi_core
        PUBLIC
            $<$<BOOL:${TFM_MULTI_CORE_NS_OS_MAILBOX_THREAD}>:TFM_MULTI_CORE_NS_OS_MAILBOX_THREAD>
            TFM_MULTI_CORE_NS_OS
    )

    target_link_libraries(ns_multi_core
        PRIVATE
            platform_ns
            tfm_api_ns
            os_wrapper
    )
endif()

################## Update plaform_ns with NS settings #################

target_include_directories(platform_ns
    PUBLIC
        $<$<BOOL:${TFM_NS_MAILBOX_API}>:${SPE_INSTALL_INTERFACE_INC}/multi_core>
        ${SPE_INSTALL_INTERFACE_INC}
)

target_compile_definitions(platform_ns
    PUBLIC
        $<$<BOOL:${TFM_NS_MAILBOX_API}>:TFM_MULTI_CORE_NS_OS>
)

################# Update NS interface with NS settings ################

target_sources(tfm_api_ns
    PRIVATE
        # NS specific implementation of NS interface dispatcher
        $<$<NOT:$<BOOL:${TFM_NS_MAILBOX_API}>>:${SPE_INSTALL_INTERFACE_SRC}/os_wrapper/tfm_ns_interface_rtos.c>
)

target_compile_definitions(tfm_api_ns
    PUBLIC
        $<$<BOOL:${TEST_NS_MULTI_CORE}>:TFM_MULTI_CORE_TEST>
)

target_link_libraries(tfm_api_ns
    PRIVATE
        $<$<BOOL:${TFM_NS_MAILBOX_API}>:tfm_api_ns_mailbox>
        $<$<NOT:$<BOOL:${TFM_NS_MAILBOX_API}>>:tfm_api_ns_tz>
        $<$<NOT:$<BOOL:${TFM_NS_MAILBOX_API}>>:os_wrapper>
)

######################## NS application broker ########################

add_library(tfm_test_broker STATIC)

target_sources(tfm_test_broker
    PRIVATE
        assert.c
        main_ns.c
)

target_include_directories(tfm_test_broker
    PUBLIC
        .
        ${APP_LIB_DIR}/log/
)

target_link_libraries(tfm_test_broker
    PRIVATE
        os_wrapper
        tfm_nsid_manager
    PUBLIC
        RTX_OS
        tfm_api_ns
        $<$<BOOL:${TFM_NS_MAILBOX_API}>:ns_multi_core>
)

target_compile_definitions(tfm_test_broker
    PUBLIC
        $<$<BOOL:${TFM_NS_REG_TEST}>:TFM_NS_REG_TEST>
        $<$<BOOL:${TFM_NS_MAILBOX_API}>:TFM_NS_MAILBOX_API>
)