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wolfBoot/cmake/stm32_hal_download.cmake

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CMake
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# wolfboot/cmake/stm32_hal_download.cmake
#
# Copyright (C) 2026 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 3 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
#
# If not found:
# 1) The CubeIDE
# 2) VisualGDB/EmbeddedBSPs/arm-eabi/com.sysprogs.arm.stm32
# 3) User-specified
#
# ... then download HAL files as needed:
# Ensure this file is only included and initialized once
if(CMAKE_VERSION VERSION_LESS 3.10)
# Fallback path for older CMake, and anything else that wants to detect is loaded
if(DEFINED STM32_HAL_DOWNLOAD_CMAKE_INCLUDED)
return()
endif()
else()
include_guard(GLOBAL)
endif()
if(ENABLE_HAL_DOWNLOAD) # Entire file wrapper
include(FetchContent)
if(NOT FUNCTIONS_CMAKE_INCLUDED)
include(cmake/functions.cmake)
endif()
# Accumulators for the DSL
set(_DL_NAMES)
set(_DL_URLS)
set(_DL_TAGS)
# Mini DSL
function(add_download)
cmake_parse_arguments(AD "" "" "NAME;URL;TAG" ${ARGN})
if(NOT AD_NAME)
message(FATAL_ERROR "add_download requires NAME")
endif()
if(NOT AD_URL)
message(FATAL_ERROR "add_download requires URL")
endif()
if(NOT AD_TAG)
set(AD_TAG "master")
endif()
list(APPEND _DL_NAMES "${AD_NAME}")
list(APPEND _DL_URLS "${AD_URL}")
list(APPEND _DL_TAGS "${AD_TAG}")
set(_DL_NAMES "${_DL_NAMES}" PARENT_SCOPE)
set(_DL_URLS "${_DL_URLS}" PARENT_SCOPE)
set(_DL_TAGS "${_DL_TAGS}" PARENT_SCOPE)
endfunction()
set(DOWNLOADS_FOUND false)
# If a downloads list is provided, include it
if(DEFINED WOLFBOOT_DOWNLOADS_CMAKE)
if(EXISTS "${WOLFBOOT_DOWNLOADS_CMAKE}")
message(STATUS "Including downloads list: ${WOLFBOOT_DOWNLOADS_CMAKE}")
include("${WOLFBOOT_DOWNLOADS_CMAKE}")
set(DOWNLOADS_FOUND true)
else()
# If there's a defined download, the file specified needs to exist!
message(FATAL_ERROR "WOLFBOOT_DOWNLOADS_CMAKE enabled but file now found: ${WOLFBOOT_DOWNLOADS_CMAKE}")
endif()
else()
message(STATUS "No WOLFBOOT_DOWNLOADS_CMAKE and no builtin defaults for target: ${WOLFBOOT_TARGET}. Skipping auto downloads.")
endif() # WOLFBOOT_DOWNLOADS_CMAKE
# Fallback: The stm32l4 trio is known to be needed, so hard-coded here:
if(WOLFBOOT_TARGET STREQUAL "stm32l4" AND (NOT DOWNLOADS_FOUND))
message(STATUS "WARNING not downloads found for known target needing them: stm32l4" )
add_download(
NAME st_hal
URL https://github.com/STMicroelectronics/stm32l4xx_hal_driver.git
TAG v1.13.5
)
add_download(
NAME cmsis_dev
URL https://github.com/STMicroelectronics/cmsis_device_l4.git
TAG v1.7.4
)
add_download(
NAME cmsis_core
URL https://github.com/ARM-software/CMSIS_5.git
TAG 5.9.0
)
endif()
# Validate lists are aligned
list(LENGTH _DL_NAMES _n1)
list(LENGTH _DL_URLS _n2)
list(LENGTH _DL_TAGS _n3)
if(NOT (_n1 EQUAL _n2 AND _n1 EQUAL _n3))
message(FATAL_ERROR "add_download internal list length mismatch: names=${_n1} urls=${_n2} tags=${_n3}")
endif()
# Nothing to do
if(_n1 EQUAL 0)
set(STM32_HAL_DOWNLOAD_CMAKE_INCLUDED TRUE)
#---------------------------------------------------------------------------------------------
message(STATUS "No files found needing to be downloaded. If needed, configure WOLFBOOT_DOWNLOADS_CMAKE")
return()
#---------------------------------------------------------------------------------------------
endif()
# Fetch loop
set(FETCHCONTENT_QUIET OFF)
set(FETCHCONTENT_BASE_DIR "${CMAKE_BINARY_DIR}/_deps")
set(_ALL_NAMES)
math(EXPR _last "${_n1} - 1")
foreach(i RANGE 0 ${_last})
list(GET _DL_NAMES ${i} _name)
list(GET _DL_URLS ${i} _url)
list(GET _DL_TAGS ${i} _tag)
message(STATUS "Fetching ${_url} (tag ${_tag})")
FetchContent_Declare(${_name}
GIT_REPOSITORY "${_url}"
GIT_TAG "${_tag}"
GIT_SHALLOW TRUE
GIT_PROGRESS FALSE
)
list(APPEND _ALL_NAMES "${_name}")
endforeach()
if(_ALL_NAMES)
FetchContent_MakeAvailable(${_ALL_NAMES})
endif()
# st_hal
FetchContent_GetProperties(st_hal) # ensures *_SOURCE_DIR vars are available
if(DEFINED st_hal_SOURCE_DIR AND EXISTS "${st_hal_SOURCE_DIR}")
set_and_echo_dir(HAL_BASE "${st_hal_SOURCE_DIR}")
set_and_echo_dir(HAL_DRV "${st_hal_SOURCE_DIR}")
else()
message(FATAL_ERROR "st_hal source dir not found; expected after FetchContent.")
endif()
# cmsis_dev
FetchContent_GetProperties(cmsis_dev)
if(DEFINED cmsis_dev_SOURCE_DIR AND EXISTS "${cmsis_dev_SOURCE_DIR}")
set_and_echo_dir(HAL_CMSIS_DEV "${cmsis_dev_SOURCE_DIR}/Include")
else()
message(FATAL_ERROR "cmsis_dev source dir not found.")
endif()
# cmsis_core
FetchContent_GetProperties(cmsis_core)
if(DEFINED cmsis_core_SOURCE_DIR AND EXISTS "${cmsis_core_SOURCE_DIR}")
set_and_echo_dir(HAL_CMSIS_CORE "${cmsis_core_SOURCE_DIR}/CMSIS/Core/Include")
else()
message(FATAL_ERROR "cmsis_core source dir not found.")
endif()
# Map include directories when known names are fetched
# Adjust or extend this block if you add more components
if(TARGET st_hal)
set_and_echo_dir(HAL_BASE "${st_hal_SOURCE_DIR}")
set_and_echo_dir(HAL_DRV "${st_hal_SOURCE_DIR}")
endif()
if(TARGET cmsis_dev)
set_and_echo_dir(HAL_CMSIS_DEV "${cmsis_dev_SOURCE_DIR}/Include")
endif()
if(TARGET cmsis_core)
set_and_echo_dir(HAL_CMSIS_CORE "${cmsis_core_SOURCE_DIR}/CMSIS/Core/Include")
endif()
endif() #ENABLE_HAL_DOWNLOAD
set(STM32_HAL_DOWNLOAD_CMAKE_INCLUDED true)
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