# CMakeLists.txt
#
# Copyright (C) 2022 wolfSSL Inc.
#
# This file is part of wolfBoot.
#
# wolfBoot is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# wolfBoot is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA

include(../cmake/wolfboot.cmake)

set(PLATFORM_NAME ${WOLFBOOT_TARGET})

if(NOT DEFINED WOLFBOOT_TARGET)
    set(WOLFBOOT_TARGET "none")
endif()

if("${SIGN}" STREQUAL "RSA2048")
    set(IMAGE_HEADER_SIZE "512")
endif()

if("${SIGN}" STREQUAL "RSA4096")
    set(IMAGE_HEADER_SIZE "1024")
endif()

set(APP_SOURCES app_${WOLFBOOT_TARGET}.c led.c system.c timer.c)

if(ARCH STREQUAL "ARM")
    list(APPEND APP_SOURCES startup_arm.c)
    list(APPEND TEST_APP_COMPILE_DEFINITIONS STM32)
endif()

if(ENCRYPT)
    list(APPEND TEST_APP_COMPILE_DEFINITIONS EXT_ENCRYPTED=1)
endif()

if("${WOLFBOOT_TARGET}" STREQUAL "stm32h7")
    set(APP_LSCRIPT_TEMPLATE ${CMAKE_CURRENT_SOURCE_DIR}/ARM-stm32h7.ld)
elseif("${WOLFBOOT_TARGET}" STREQUAL "stm32u5")
    set(APP_LSCRIPT_TEMPLATE ${CMAKE_CURRENT_SOURCE_DIR}/ARM-stm32u5.ld)
else()
    set(APP_LSCRIPT_TEMPLATE ${CMAKE_CURRENT_SOURCE_DIR}/${ARCH}.ld)
endif()

if(SPI_FLASH)
    list(APPEND TEST_APP_COMPILE_DEFINITIONS SPI_FLASH)
endif()

math(EXPR WOLFBOOT_TEST_APP_ADDRESS "${WOLFBOOT_PARTITION_BOOT_ADDRESS} + ${IMAGE_HEADER_SIZE}"
     OUTPUT_FORMAT HEXADECIMAL)
math(EXPR WOLFBOOT_TEST_APP_SIZE "${WOLFBOOT_PARTITION_SIZE} - ${IMAGE_HEADER_SIZE}"
     OUTPUT_FORMAT HEXADECIMAL)

# determine size of bootloader partition
if(NOT DEFINED BOOTLOADER_PARTITION_SIZE)
    math(EXPR BOOTLOADER_PARTITION_SIZE "${WOLFBOOT_PARTITION_BOOT_ADDRESS} - ${ARCH_FLASH_OFFSET}"
         OUTPUT_FORMAT HEXADECIMAL)
endif()

get_filename_component(WOLFBOOT_LSCRIPT ${CMAKE_SOURCE_DIR}/${WOLFBOOT_LSCRIPT_TEMPLATE} NAME)
set(WOLFBOOT_LSCRIPT ${CMAKE_CURRENT_BINARY_DIR}/${WOLFBOOT_LSCRIPT})

get_filename_component(APP_LSCRIPT ${APP_LSCRIPT_TEMPLATE} NAME)
set(APP_LSCRIPT ${CMAKE_CURRENT_BINARY_DIR}/${APP_LSCRIPT})

# generate linker script for bootloader
configure_file(${CMAKE_SOURCE_DIR}/${WOLFBOOT_LSCRIPT_TEMPLATE} ${WOLFBOOT_LSCRIPT})

# generate linker script for app
configure_file(${APP_LSCRIPT_TEMPLATE} ${APP_LSCRIPT})

if(WOLFBOOT_TARGET STREQUAL "sim")
    # create bootloader for platform
    gen_wolfboot_platform_target(${PLATFORM_NAME} "")
else()
    add_library(bootloader_linker_script INTERFACE)
    target_link_options(bootloader_linker_script INTERFACE -T${WOLFBOOT_LSCRIPT} -Wl,-Map=wolfboot.map)

    # create bootloader for platform
    gen_wolfboot_platform_target(${PLATFORM_NAME} bootloader_linker_script)
endif()

add_executable(image)

target_sources(image PRIVATE ${APP_SOURCES})

target_include_directories(image PRIVATE ../include ${CMAKE_CURRENT_BINARY_DIR})

target_link_libraries(image wolfboot target)

target_compile_definitions(image PRIVATE PLATFORM_${WOLFBOOT_TARGET}
                                            ${TEST_APP_COMPILE_DEFINITIONS} ${WOLFBOOT_DEFS})

target_compile_options(image PRIVATE -Wall -Wstack-usage=1024 -ffreestanding -Wno-unused
                                        -nostartfiles)

if(WOLFBOOT_TARGET STREQUAL "sim")
    target_link_options(image PRIVATE -Wl,-gc-sections -Wl,-Map=image.map)
else()
    target_link_options(image PRIVATE -T${APP_LSCRIPT} -Wl,-gc-sections -Wl,-Map=image.map)
endif()

if(WOLFBOOT_TARGET IN_LIST ARM_TARGETS)
    message(STATUS "Binary output products will be generated")
    gen_bin_target_outputs(image)

    # add boot address to cache
    unset(${PLATFORM_NAME}_BOOT_ADDRESS CACHE)
    set(${PLATFORM_NAME}_BOOT_ADDRESS ${WOLFBOOT_PARTITION_BOOT_ADDRESS} CACHE INTERNAL "")
    
    gen_wolfboot_factory_image(${PLATFORM_NAME} image)
else()
    gen_wolfboot_signed_image(image)
endif()
