Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 | # SPDX-License-Identifier: Apache-2.0
file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/include/generated)
# Zephyr code can configure itself based on a KConfig'uration with the
# header file autoconf.h. There exists an analogous file devicetree_unfixed.h
# that allows configuration based on information encoded in DTS.
#
# Here we call on dtc, the gcc preprocessor and
# scripts/dts/gen_defines.py to generate various DT-related files at
# CMake configure-time.
#
# See the Devicetree user guide in the Zephyr documentation for details.
set(GEN_DEFINES_SCRIPT ${ZEPHYR_BASE}/scripts/dts/gen_defines.py)
set(ZEPHYR_DTS ${PROJECT_BINARY_DIR}/zephyr.dts)
# This contains the edtlib.EDT object created from zephyr.dts in Python's
# pickle data marshalling format (https://docs.python.org/3/library/pickle.html)
#
# Its existence is an implementation detail used to speed up further
# use of the devicetree by processes that run later on in the build,
# and should not be made part of the documentation.
set(EDT_PICKLE ${PROJECT_BINARY_DIR}/edt.pickle)
set(DEVICETREE_UNFIXED_H ${PROJECT_BINARY_DIR}/include/generated/devicetree_unfixed.h)
set(DEVICE_EXTERN_H ${PROJECT_BINARY_DIR}/include/generated/device_extern.h)
set(DTS_POST_CPP ${PROJECT_BINARY_DIR}/zephyr.dts.pre)
set(DTS_DEPS ${PROJECT_BINARY_DIR}/zephyr.dts.d)
# The location of a list of known vendor prefixes.
# This is relative to each element of DTS_ROOT.
set(VENDOR_PREFIXES dts/bindings/vendor-prefixes.txt)
# Devicetree in CMake.
set(DTS_CMAKE_SCRIPT ${ZEPHYR_BASE}/scripts/dts/gen_dts_cmake.py)
set(DTS_CMAKE ${PROJECT_BINARY_DIR}/dts.cmake)
set_ifndef(DTS_SOURCE ${BOARD_DIR}/${BOARD}.dts)
zephyr_file(APPLICATION_ROOT DTS_ROOT)
# 'DTS_ROOT' is a list of directories where a directory tree with DT
# files may be found. It always includes the application directory,
# the board directory, and ${ZEPHYR_BASE}.
list(APPEND
DTS_ROOT
${APPLICATION_SOURCE_DIR}
${BOARD_DIR}
${SHIELD_DIRS}
${ZEPHYR_BASE}
)
list(REMOVE_DUPLICATES
DTS_ROOT
)
# TODO: What to do about non-posix platforms where NOT CONFIG_HAS_DTS (xtensa)?
# Drop support for NOT CONFIG_HAS_DTS perhaps?
if(EXISTS ${DTS_SOURCE})
set(SUPPORTS_DTS 1)
if(BOARD_REVISION AND EXISTS ${BOARD_DIR}/${BOARD}_${BOARD_REVISION_STRING}.overlay)
list(APPEND DTS_SOURCE ${BOARD_DIR}/${BOARD}_${BOARD_REVISION_STRING}.overlay)
endif()
else()
set(SUPPORTS_DTS 0)
endif()
set(dts_files
${DTS_SOURCE}
${shield_dts_files}
)
if(SUPPORTS_DTS)
if(DTC_OVERLAY_FILE)
# Convert from space-separated files into file list
string(REPLACE " " ";" DTC_OVERLAY_FILE_RAW_LIST "${DTC_OVERLAY_FILE}")
foreach(file ${DTC_OVERLAY_FILE_RAW_LIST})
file(TO_CMAKE_PATH "${file}" cmake_path_file)
list(APPEND DTC_OVERLAY_FILE_AS_LIST ${cmake_path_file})
endforeach()
list(APPEND
dts_files
${DTC_OVERLAY_FILE_AS_LIST}
)
endif()
set(i 0)
unset(DTC_INCLUDE_FLAG_FOR_DTS)
foreach(dts_file ${dts_files})
list(APPEND DTC_INCLUDE_FLAG_FOR_DTS
-include ${dts_file})
if(i EQUAL 0)
message(STATUS "Found BOARD.dts: ${dts_file}")
else()
message(STATUS "Found devicetree overlay: ${dts_file}")
endif()
math(EXPR i "${i}+1")
endforeach()
unset(DTS_ROOT_SYSTEM_INCLUDE_DIRS)
unset(DTS_ROOT_BINDINGS)
foreach(dts_root ${DTS_ROOT})
foreach(dts_root_path
include
dts/common
dts/${ARCH}
dts
)
get_filename_component(full_path ${dts_root}/${dts_root_path} REALPATH)
if(EXISTS ${full_path})
list(APPEND
DTS_ROOT_SYSTEM_INCLUDE_DIRS
-isystem ${full_path}
)
endif()
endforeach()
set(bindings_path ${dts_root}/dts/bindings)
if(EXISTS ${bindings_path})
list(APPEND
DTS_ROOT_BINDINGS
${bindings_path}
)
endif()
set(vendor_prefixes ${dts_root}/${VENDOR_PREFIXES})
if(EXISTS ${vendor_prefixes})
list(APPEND EXTRA_GEN_DEFINES_ARGS --vendor-prefixes ${vendor_prefixes})
endif()
endforeach()
# Cache the location of the root bindings so they can be used by
# scripts which use the build directory.
set(CACHED_DTS_ROOT_BINDINGS ${DTS_ROOT_BINDINGS} CACHE INTERNAL
"DT bindings root directories")
if(NOT DEFINED CMAKE_DTS_PREPROCESSOR)
set(CMAKE_DTS_PREPROCESSOR ${CMAKE_C_COMPILER})
endif()
# TODO: Cut down on CMake configuration time by avoiding
# regeneration of devicetree_unfixed.h on every configure. How
# challenging is this? What are the dts dependencies? We run the
# preprocessor, and it seems to be including all kinds of
# directories with who-knows how many header files.
# Run the preprocessor on the DTS input files. We are leaving
# linemarker directives enabled on purpose. This tells dtlib where
# each line actually came from, which improves error reporting.
execute_process(
COMMAND ${CMAKE_DTS_PREPROCESSOR}
-x assembler-with-cpp
-nostdinc
${DTS_ROOT_SYSTEM_INCLUDE_DIRS}
${DTC_INCLUDE_FLAG_FOR_DTS} # include the DTS source and overlays
${NOSYSDEF_CFLAG}
-D__DTS__
${DTS_EXTRA_CPPFLAGS}
-E # Stop after preprocessing
-MD # Generate a dependency file as a side-effect
-MF ${DTS_DEPS}
-o ${DTS_POST_CPP}
${ZEPHYR_BASE}/misc/empty_file.c
WORKING_DIRECTORY ${APPLICATION_SOURCE_DIR}
RESULT_VARIABLE ret
)
if(NOT "${ret}" STREQUAL "0")
message(FATAL_ERROR "command failed with return code: ${ret}")
endif()
# Parse the generated dependency file to find the DT sources that
# were included, including any transitive includes, and then add
# them to the list of files that trigger a re-run of CMake.
toolchain_parse_make_rule(${DTS_DEPS}
include_files # Output parameter
)
set_property(DIRECTORY APPEND PROPERTY
CMAKE_CONFIGURE_DEPENDS
${include_files}
${GEN_DEFINES_SCRIPT}
${DTS_CMAKE_SCRIPT}
)
#
# Run gen_defines.py to create a header file, zephyr.dts, and edt.pickle.
#
string(REPLACE ";" " " EXTRA_DTC_FLAGS_RAW "${EXTRA_DTC_FLAGS}")
set(CMD_EXTRACT ${PYTHON_EXECUTABLE} ${GEN_DEFINES_SCRIPT}
--dts ${DTS_POST_CPP}
--dtc-flags '${EXTRA_DTC_FLAGS_RAW}'
--bindings-dirs ${DTS_ROOT_BINDINGS}
--header-out ${DEVICETREE_UNFIXED_H}.new
--device-header-out ${DEVICE_EXTERN_H}.new
--dts-out ${ZEPHYR_DTS}.new # for debugging and dtc
--edt-pickle-out ${EDT_PICKLE}
${EXTRA_GEN_DEFINES_ARGS}
)
execute_process(
COMMAND ${CMD_EXTRACT}
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
RESULT_VARIABLE ret
)
if(NOT "${ret}" STREQUAL "0")
message(FATAL_ERROR "gen_defines.py failed with return code: ${ret}")
else()
zephyr_file_copy(${ZEPHYR_DTS}.new ${ZEPHYR_DTS} ONLY_IF_DIFFERENT)
zephyr_file_copy(${DEVICETREE_UNFIXED_H}.new ${DEVICETREE_UNFIXED_H} ONLY_IF_DIFFERENT)
zephyr_file_copy(${DEVICE_EXTERN_H}.new ${DEVICE_EXTERN_H})
file(REMOVE ${ZEPHYR_DTS}.new ${DEVICETREE_UNFIXED_H}.new ${DEVICE_EXTERN_H}.new)
message(STATUS "Generated zephyr.dts: ${ZEPHYR_DTS}")
message(STATUS "Generated devicetree_unfixed.h: ${DEVICETREE_UNFIXED_H}")
message(STATUS "Generated device_extern.h: ${DEVICE_EXTERN_H}")
endif()
execute_process(
COMMAND ${PYTHON_EXECUTABLE} ${DTS_CMAKE_SCRIPT}
--edt-pickle ${EDT_PICKLE}
--cmake-out ${DTS_CMAKE}
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
RESULT_VARIABLE ret
)
if(NOT "${ret}" STREQUAL "0")
message(FATAL_ERROR "gen_dts_cmake.py failed with return code: ${ret}")
else()
message(STATUS "Including generated dts.cmake file: ${DTS_CMAKE}")
include(${DTS_CMAKE})
endif()
#
# Run dtc on the final devicetree source, just to catch any
# warnings/errors from it. dtlib and edtlib parse the devicetree files
# themselves, so we don't rely on dtc otherwise.
#
if(DTC)
set(DTC_WARN_UNIT_ADDR_IF_ENABLED "")
check_dtc_flag("-Wunique_unit_address_if_enabled" check)
if (check)
set(DTC_WARN_UNIT_ADDR_IF_ENABLED "-Wunique_unit_address_if_enabled")
endif()
set(DTC_NO_WARN_UNIT_ADDR "")
check_dtc_flag("-Wno-unique_unit_address" check)
if (check)
set(DTC_NO_WARN_UNIT_ADDR "-Wno-unique_unit_address")
endif()
set(VALID_EXTRA_DTC_FLAGS "")
foreach(extra_opt ${EXTRA_DTC_FLAGS})
check_dtc_flag(${extra_opt} check)
if (check)
list(APPEND VALID_EXTRA_DTC_FLAGS ${extra_opt})
endif()
endforeach()
set(EXTRA_DTC_FLAGS ${VALID_EXTRA_DTC_FLAGS})
execute_process(
COMMAND ${DTC}
-O dts
-o - # Write output to stdout, which we discard below
-b 0
-E unit_address_vs_reg
${DTC_NO_WARN_UNIT_ADDR}
${DTC_WARN_UNIT_ADDR_IF_ENABLED}
${EXTRA_DTC_FLAGS} # User settable
${ZEPHYR_DTS}
OUTPUT_QUIET # Discard stdout
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
RESULT_VARIABLE ret
)
if(NOT "${ret}" STREQUAL "0")
message(FATAL_ERROR "command failed with return code: ${ret}")
endif()
endif(DTC)
else()
set(header_template ${ZEPHYR_BASE}/misc/generated/generated_header.template)
zephyr_file_copy(${header_template} ${DEVICETREE_UNFIXED_H} ONLY_IF_DIFFERENT)
zephyr_file_copy(${header_template} ${DEVICE_EXTERN_H} ONLY_IF_DIFFERENT)
endif(SUPPORTS_DTS)
|