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zephyr/cmake/modules/boards.cmake

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CMake
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# SPDX-License-Identifier: Apache-2.0
#
# Copyright (c) 2021, Nordic Semiconductor ASA
# Validate board and setup boards target.
#
# This CMake module will validate the BOARD argument as well as splitting the
# BOARD argument into <BOARD> and <BOARD_REVISION>. When BOARD_EXTENSIONS option
# is enabled (default) this module will also take care of finding board
# extension directories.
#
# If a board implementation is not found for the specified board an error will
# be raised and list of valid boards will be printed.
#
# If user provided board is a board alias, the board will be adjusted to real
# board name.
#
# If board name is deprecated, then board will be adjusted to new board name and
# a deprecation warning will be printed to the user.
#
# Outcome:
# The following variables will be defined when this CMake module completes:
#
# - BOARD: Board, without revision field.
# - BOARD_REVISION: Board revision
# - BOARD_QUALIFIERS: Board qualifiers
# - NORMALIZED_BOARD_QUALIFIERS: Board qualifiers in lower-case format where slashes have been
# replaced with underscores
# - NORMALIZED_BOARD_TARGET: Board target in lower-case format where slashes have been
# replaced with underscores
# - BOARD_DIR: Board directory with the implementation for selected board
# - ARCH_DIR: Arch dir for extracted from selected board
# - BOARD_ROOT: BOARD_ROOT with ZEPHYR_BASE appended
# - BOARD_EXTENSION_DIRS: List of board extension directories (If
# BOARD_EXTENSIONS is not explicitly disabled)
#
# The following targets will be defined when this CMake module completes:
# - board: when invoked, a list of valid boards will be printed
#
# Required variables:
# - BOARD: Board name, including any optional revision field, for example: `foo` or `foo@1.0.0`
#
# Optional variables:
# - BOARD_ROOT: CMake list of board roots containing board implementations
# - ARCH_ROOT: CMake list of arch roots containing arch implementations
#
# Optional environment variables:
# - ZEPHYR_BOARD_ALIASES: Environment setting pointing to a CMake file
# containing board aliases.
#
# Variables set by this module and not mentioned above are for internal
# use only, and may be removed, renamed, or re-purposed without prior notice.
include_guard(GLOBAL)
include(python)
include(extensions)
# Check that BOARD has been provided, and that it has not changed.
# If user tries to change the BOARD, the BOARD value is reset to the BOARD_CACHED value.
zephyr_check_cache(BOARD REQUIRED)
# 'BOARD_ROOT' is a prioritized list of directories where boards may
# be found. It always includes ${ZEPHYR_BASE} at the lowest priority (except for unittesting).
if(NOT unittest IN_LIST Zephyr_FIND_COMPONENTS)
list(APPEND BOARD_ROOT ${ZEPHYR_BASE})
endif()
# Helper function for parsing a board's name, revision, and qualifiers,
# from one input variable to three separate output variables.
function(parse_board_components board_in name_out revision_out qualifiers_out)
if(NOT "${${board_in}}" MATCHES "^([^@/]+)(@[^@/]+)?(/[^@]+)?$")
message(FATAL_ERROR
"Invalid revision / qualifiers format for ${board_in} (${${board_in}}). "
"Valid format is: <board>@<revision>/<qualifiers>"
)
endif()
string(REPLACE "@" "" board_revision "${CMAKE_MATCH_2}")
set(${name_out} ${CMAKE_MATCH_1} PARENT_SCOPE)
set(${revision_out} ${board_revision} PARENT_SCOPE)
set(${qualifiers_out} ${CMAKE_MATCH_3} PARENT_SCOPE)
endfunction()
parse_board_components(
BOARD
BOARD BOARD_REVISION BOARD_QUALIFIERS
)
zephyr_get(ZEPHYR_BOARD_ALIASES)
if(DEFINED ZEPHYR_BOARD_ALIASES)
include(${ZEPHYR_BOARD_ALIASES})
if(${BOARD}_BOARD_ALIAS)
set(BOARD_ALIAS ${BOARD} CACHE STRING "Board alias, provided by user")
parse_board_components(
${BOARD}_BOARD_ALIAS
BOARD BOARD_ALIAS_REVISION BOARD_ALIAS_QUALIFIERS
)
message(STATUS "Aliased BOARD=${BOARD_ALIAS} changed to ${BOARD}")
if(NOT DEFINED BOARD_REVISION)
set(BOARD_REVISION ${BOARD_ALIAS_REVISION})
endif()
set(BOARD_QUALIFIERS ${BOARD_ALIAS_QUALIFIERS}${BOARD_QUALIFIERS})
endif()
endif()
include(${ZEPHYR_BASE}/boards/deprecated.cmake)
if(${BOARD}${BOARD_QUALIFIERS}_DEPRECATED)
set(BOARD_DEPRECATED ${BOARD}${BOARD_QUALIFIERS} CACHE STRING "Deprecated BOARD, provided by user")
message(WARNING
"Deprecated BOARD=${BOARD_DEPRECATED} specified, "
"board automatically changed to: ${${BOARD}${BOARD_QUALIFIERS}_DEPRECATED}."
)
parse_board_components(
${BOARD}${BOARD_QUALIFIERS}_DEPRECATED
BOARD BOARD_DEPRECATED_REVISION BOARD_QUALIFIERS
)
if(DEFINED BOARD_DEPRECATED_REVISION)
if(DEFINED BOARD_REVISION)
message(FATAL_ERROR
"Invalid board revision: ${BOARD_REVISION}\n"
"Deprecated board '${BOARD_DEPRECATED}' is now implemented as a revision of another board "
"(${BOARD}@${BOARD_DEPRECATED_REVISION}), so the specified revision does not apply. "
"Please consult the documentation for '${BOARD}' to see how to build for the new board."
)
endif()
set(BOARD_REVISION ${BOARD_DEPRECATED_REVISION})
endif()
endif()
zephyr_boilerplate_watch(BOARD)
foreach(root ${BOARD_ROOT})
# Check that the board root looks reasonable.
if(NOT IS_DIRECTORY "${root}/boards")
message(WARNING "BOARD_ROOT element without a 'boards' subdirectory:
${root}
Hints:
- if your board directory is '/foo/bar/boards/<ARCH>/my_board' then add '/foo/bar' to BOARD_ROOT, not the entire board directory
- if in doubt, use absolute paths")
endif()
endforeach()
if((HWMv1 AND NOT EXISTS ${BOARD_DIR}/${BOARD}_defconfig)
OR (HWMv2 AND NOT EXISTS ${BOARD_DIR}/board.yml))
message(WARNING "BOARD_DIR: ${BOARD_DIR} has been moved or deleted. "
"Trying to find new location."
)
set(BOARD_DIR BOARD_DIR-NOTFOUND CACHE PATH "Path to a file." FORCE)
endif()
# Prepare list boards command.
# This command is used for locating the board dir as well as printing all boards
# in the system in the following cases:
# - User specifies an invalid BOARD
# - User invokes '<build-command> boards' target
list(TRANSFORM ARCH_ROOT PREPEND "--arch-root=" OUTPUT_VARIABLE arch_root_args)
list(TRANSFORM BOARD_ROOT PREPEND "--board-root=" OUTPUT_VARIABLE board_root_args)
list(TRANSFORM SOC_ROOT PREPEND "--soc-root=" OUTPUT_VARIABLE soc_root_args)
set(list_boards_commands
COMMAND ${PYTHON_EXECUTABLE} ${ZEPHYR_BASE}/scripts/list_boards.py
${arch_root_args} ${board_root_args} --arch-root=${ZEPHYR_BASE}
${soc_root_args} --soc-root=${ZEPHYR_BASE}
)
if(NOT BOARD_DIR)
if(BOARD_ALIAS)
execute_process(${list_boards_commands} --board=${BOARD_ALIAS} --cmakeformat={DIR}
OUTPUT_VARIABLE ret_board
ERROR_VARIABLE err_board
RESULT_VARIABLE ret_val
)
string(STRIP "${ret_board}" ret_board)
cmake_parse_arguments(BOARD_HIDDEN "" "DIR" "" ${ret_board})
set(BOARD_HIDDEN_DIR ${BOARD_HIDDEN_DIR} CACHE PATH "Path to a folder." FORCE)
if(BOARD_HIDDEN_DIR)
message("Board alias ${BOARD_ALIAS} is hiding the real board of same name")
endif()
endif()
endif()
set(format_str "{NAME}\;{DIR}\;{HWM}\;")
set(format_str "${format_str}{REVISION_FORMAT}\;{REVISION_DEFAULT}\;{REVISION_EXACT}\;")
set(format_str "${format_str}{REVISIONS}\;{SOCS}\;{QUALIFIERS}")
if(BOARD_DIR)
set(board_dir_arg "--board-dir=${BOARD_DIR}")
endif()
execute_process(${list_boards_commands} --board=${BOARD} ${board_dir_arg}
--cmakeformat=${format_str}
OUTPUT_VARIABLE ret_board
ERROR_VARIABLE err_board
RESULT_VARIABLE ret_val
)
if(ret_val)
message(FATAL_ERROR "Error finding board: ${BOARD}\nError message: ${err_board}")
endif()
if(NOT "${ret_board}" STREQUAL "")
string(STRIP "${ret_board}" ret_board)
string(FIND "${ret_board}" "\n" idx REVERSE)
if(idx GREATER -1)
while(TRUE)
math(EXPR start "${idx} + 1")
string(SUBSTRING "${ret_board}" ${start} -1 line)
string(SUBSTRING "${ret_board}" 0 ${idx} ret_board)
cmake_parse_arguments(LIST_BOARD "" "DIR" "" ${line})
set(board_dirs "${board_dirs}\n${LIST_BOARD_DIR}")
if(idx EQUAL -1)
break()
endif()
string(FIND "${ret_board}" "\n" idx REVERSE)
endwhile()
message(FATAL_ERROR "Multiple boards named '${BOARD}' found in:${board_dirs}")
endif()
set(single_val "NAME;DIR;HWM;REVISION_FORMAT;REVISION_DEFAULT;REVISION_EXACT")
set(multi_val "REVISIONS;SOCS;QUALIFIERS")
cmake_parse_arguments(LIST_BOARD "" "${single_val}" "${multi_val}" ${ret_board})
set(BOARD_DIR ${LIST_BOARD_DIR} CACHE PATH "Board directory for board (${BOARD})" FORCE)
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${BOARD_DIR}/board.yml)
# Create two CMake variables identifying the hw model.
# CMake variable: HWM=[v1,v2]
# CMake variable: HWMv1=True, when HWMv1 is in use.
# CMake variable: HWMv2=True, when HWMv2 is in use.
set(HWM ${LIST_BOARD_HWM} CACHE INTERNAL "Zephyr hardware model version")
set(HWM${HWM} True CACHE INTERNAL "Zephyr hardware model")
elseif(BOARD_DIR)
message(FATAL_ERROR "Error finding board: ${BOARD} in ${BOARD_DIR}.\n"
"This indicates the board has been removed, renamed, or placed at a new location.\n"
"Please run a pristine build."
)
else()
message("No board named '${BOARD}' found.\n\n"
"Please choose one of the following boards:\n"
)
execute_process(${list_boards_commands})
unset(CACHED_BOARD CACHE)
message(FATAL_ERROR "Invalid BOARD; see above.")
endif()
if(HWMv1 AND DEFINED BOARD_QUALIFIERS)
message(FATAL_ERROR
"Board '${BOARD}' does not support board qualifiers, ${BOARD}${BOARD_QUALIFIERS}.\n"
"Please specify board without qualifiers.\n"
)
endif()
cmake_path(IS_PREFIX ZEPHYR_BASE "${BOARD_DIR}" NORMALIZE in_zephyr_tree)
if(NOT in_zephyr_tree)
set(USING_OUT_OF_TREE_BOARD 1)
endif()
if(HWMv1)
if(EXISTS ${BOARD_DIR}/revision.cmake)
# Board provides revision handling.
include(${BOARD_DIR}/revision.cmake)
elseif(BOARD_REVISION)
message(WARNING "Board revision ${BOARD_REVISION} specified for ${BOARD}, \
but board has no revision so revision will be ignored.")
endif()
elseif(HWMv2)
if(LIST_BOARD_REVISION_FORMAT)
if(LIST_BOARD_REVISION_FORMAT STREQUAL "custom")
include(${BOARD_DIR}/revision.cmake)
else()
if(EXISTS ${BOARD_DIR}/revision.cmake)
message(WARNING
"revision.cmake ignored, revision.cmake is only used for revision format: 'custom'"
)
endif()
string(TOUPPER "${LIST_BOARD_REVISION_FORMAT}" rev_format)
if(LIST_BOARD_REVISION_EXACT)
set(rev_exact EXACT)
endif()
board_check_revision(
FORMAT ${rev_format}
DEFAULT_REVISION ${LIST_BOARD_REVISION_DEFAULT}
VALID_REVISIONS ${LIST_BOARD_REVISIONS}
${rev_exact}
)
endif()
elseif(DEFINED BOARD_REVISION)
if(EXISTS ${BOARD_DIR}/revision.cmake)
message(WARNING
"revision.cmake is not used, revisions must be defined in '${BOARD_DIR}/board.yml'"
)
endif()
message(FATAL_ERROR "Invalid board revision: ${BOARD_REVISION}\n"
"Board '${BOARD}' does not define any revisions."
)
endif()
if(LIST_BOARD_QUALIFIERS)
# Allow users to omit the SoC when building for a board with a single SoC.
list(LENGTH LIST_BOARD_SOCS socs_length)
if(socs_length EQUAL 1)
set(BOARD_SINGLE_SOC TRUE)
set(BOARD_${BOARD}_SINGLE_SOC TRUE)
if(NOT DEFINED BOARD_QUALIFIERS)
set(BOARD_QUALIFIERS "/${LIST_BOARD_SOCS}")
elseif("${BOARD_QUALIFIERS}" MATCHES "^//.*")
string(REGEX REPLACE "^//" "/${LIST_BOARD_SOCS}/" BOARD_QUALIFIERS "${BOARD_QUALIFIERS}")
endif()
endif()
set(board_targets ${LIST_BOARD_QUALIFIERS})
list(TRANSFORM board_targets PREPEND "${BOARD}/")
if(NOT ("${BOARD}${BOARD_QUALIFIERS}" IN_LIST board_targets))
string(REPLACE ";" "\n" board_targets "${board_targets}")
unset(CACHED_BOARD CACHE)
message(FATAL_ERROR "Board qualifiers `${BOARD_QUALIFIERS}` for board \
`${BOARD}` not found. Please specify a valid board target.\n"
"Valid board targets for ${LIST_BOARD_NAME} are:\n${board_targets}\n")
endif()
endif()
else()
message(FATAL_ERROR "Unknown hw model (${HWM}) for board: ${BOARD}.")
endif()
set(board_message "Board: ${BOARD}")
if(DEFINED BOARD_REVISION)
set(board_message "${board_message}, Revision: ${BOARD_REVISION}")
if(DEFINED ACTIVE_BOARD_REVISION)
set(board_message "${board_message} (Active: ${ACTIVE_BOARD_REVISION})")
set(BOARD_REVISION ${ACTIVE_BOARD_REVISION})
endif()
string(REPLACE "." "_" BOARD_REVISION_STRING ${BOARD_REVISION})
endif()
if(DEFINED BOARD_QUALIFIERS)
string(REGEX REPLACE "^/" "qualifiers: " board_message_qualifiers "${BOARD_QUALIFIERS}")
set(board_message "${board_message}, ${board_message_qualifiers}")
string(REPLACE "/" "_" NORMALIZED_BOARD_QUALIFIERS "${BOARD_QUALIFIERS}")
endif()
set(NORMALIZED_BOARD_TARGET "${BOARD}${BOARD_QUALIFIERS}")
string(REPLACE "/" "_" NORMALIZED_BOARD_TARGET "${NORMALIZED_BOARD_TARGET}")
message(STATUS "${board_message}")
add_custom_target(boards ${list_boards_commands} USES_TERMINAL)
# Board extensions are enabled by default
set(BOARD_EXTENSIONS ON CACHE BOOL "Support board extensions")
zephyr_get(BOARD_EXTENSIONS)
# Process board extensions
if(BOARD_EXTENSIONS)
get_filename_component(board_dir_name ${BOARD_DIR} NAME)
foreach(root ${BOARD_ROOT})
set(board_extension_dir ${root}/boards/extensions/${board_dir_name})
if(NOT EXISTS ${board_extension_dir})
continue()
endif()
list(APPEND BOARD_EXTENSION_DIRS ${board_extension_dir})
endforeach()
endif()
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