forked from Imagelibrary/seL4
platform_gen: only generate regions that are used
Right now the `platform_gen.json` and `platform_gen.yaml` files contain regions that are not actually used by the kernel. This is fine for `platform_gen.h` because they are guarded by #ifdefs with kernel config defines but the same approach does not work for YAML and JSON. So, this patch changes the Python scripts that generate this files so that they only generate the regions that actually end up being used. Signed-off-by: Ivan-Velickovic <i.velickovic@unsw.edu.au>
This commit is contained in:
Ivan-Velickovic
committed by
Gerwin Klein
Gerwin Klein
parent
7f6d5c72aa
commit
1cbaeb97f0
256
config.cmake
256
config.cmake
@@ -104,133 +104,6 @@ if(NOT "${KernelCustomDTS}" STREQUAL "")
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message(STATUS "Using custom ${KernelCustomDTS} device tree, ignoring default dts and overlays")
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endif()
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if(DEFINED KernelDTSList AND (NOT "${KernelDTSList}" STREQUAL ""))
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set(KernelDTSIntermediate "${CMAKE_CURRENT_BINARY_DIR}/kernel.dts")
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set(
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KernelDTBPath "${CMAKE_CURRENT_BINARY_DIR}/kernel.dtb"
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CACHE INTERNAL "Location of kernel DTB file"
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)
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set(compatibility_outfile "${CMAKE_CURRENT_BINARY_DIR}/kernel_compat.txt")
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set(device_dest "${CMAKE_CURRENT_BINARY_DIR}/gen_headers/plat/machine/devices_gen.h")
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set(
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platform_yaml "${CMAKE_CURRENT_BINARY_DIR}/gen_headers/plat/machine/platform_gen.yaml"
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CACHE INTERNAL "Location of platform YAML description"
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)
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set(
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platform_json "${CMAKE_CURRENT_BINARY_DIR}/gen_headers/plat/machine/platform_gen.json"
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CACHE INTERNAL "Location of platform JSON description"
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)
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set(config_file "${CMAKE_CURRENT_SOURCE_DIR}/tools/hardware.yml")
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set(config_schema "${CMAKE_CURRENT_SOURCE_DIR}/tools/hardware_schema.yml")
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set(
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KernelCustomDTSOverlay ""
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CACHE
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STRING
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"Provide an additional list of overlays to append to the selected KernelPlatform's \
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device tree during build time"
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)
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if(NOT "${KernelCustomDTSOverlay}" STREQUAL "")
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foreach(dts_entry IN ITEMS ${KernelCustomDTSOverlay})
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if(NOT EXISTS ${dts_entry})
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message(FATAL_ERROR "Can't open external overlay file '${dts_entry}'!")
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endif()
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list(APPEND KernelDTSList "${dts_entry}")
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message(STATUS "Appending ${dts_entry} overlay")
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endforeach()
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endif()
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find_program(DTC_TOOL dtc)
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if("${DTC_TOOL}" STREQUAL "DTC_TOOL-NOTFOUND")
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message(FATAL_ERROR "Cannot find 'dtc' program.")
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endif()
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find_program(STAT_TOOL stat)
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if("${STAT_TOOL}" STREQUAL "STAT_TOOL-NOTFOUND")
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message(FATAL_ERROR "Cannot find 'stat' program.")
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endif()
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mark_as_advanced(DTC_TOOL STAT_TOOL)
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# Generate final DTS based on Linux DTS + seL4 overlay[s]
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foreach(entry ${KernelDTSList})
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get_absolute_source_or_binary(dts_tmp ${entry})
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list(APPEND dts_list "${dts_tmp}")
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endforeach()
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check_outfile_stale(regen ${KernelDTBPath} dts_list ${CMAKE_CURRENT_BINARY_DIR}/dts.cmd)
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if(regen)
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file(REMOVE "${KernelDTSIntermediate}")
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foreach(entry ${dts_list})
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file(READ ${entry} CONTENTS)
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file(APPEND "${KernelDTSIntermediate}" "${CONTENTS}")
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endforeach()
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# Compile DTS to DTB
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execute_process(
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COMMAND
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${DTC_TOOL} -q -I dts -O dtb -o ${KernelDTBPath} ${KernelDTSIntermediate}
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RESULT_VARIABLE error
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)
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if(error)
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message(FATAL_ERROR "Failed to compile DTS to DTB: ${KernelDTSIntermediate}")
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endif()
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# The macOS and GNU coreutils `stat` utilities have different interfaces.
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# Check if we're using the macOS version, otherwise assume GNU coreutils.
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# CMAKE_HOST_APPLE is a built-in CMake variable.
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if(CMAKE_HOST_APPLE AND "${STAT_TOOL}" STREQUAL "/usr/bin/stat")
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set(STAT_ARGS "-f%z")
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else()
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set(STAT_ARGS "-c '%s'")
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endif()
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# Track the size of the DTB for downstream tools
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execute_process(
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COMMAND ${STAT_TOOL} ${STAT_ARGS} ${KernelDTBPath}
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OUTPUT_VARIABLE KernelDTBSize
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OUTPUT_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE error
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)
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if(error)
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message(FATAL_ERROR "Failed to determine KernelDTBSize: ${KernelDTBPath}")
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endif()
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string(
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REPLACE
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"\'"
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""
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KernelDTBSize
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${KernelDTBSize}
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)
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set(KernelDTBSize "${KernelDTBSize}" CACHE INTERNAL "Size of DTB blob, in bytes")
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endif()
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set(deps ${KernelDTBPath} ${config_file} ${config_schema} ${HARDWARE_GEN_PATH})
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check_outfile_stale(regen ${device_dest} deps ${CMAKE_CURRENT_BINARY_DIR}/gen_header.cmd)
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if(regen)
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# Generate devices_gen header based on DTB
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message(STATUS "${device_dest} is out of date. Regenerating from DTB...")
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file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/gen_headers/plat/machine/")
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execute_process(
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COMMAND
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${PYTHON3} "${HARDWARE_GEN_PATH}" --dtb "${KernelDTBPath}" --compat-strings
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--compat-strings-out "${compatibility_outfile}" --c-header --header-out
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"${device_dest}" --hardware-config "${config_file}" --hardware-schema
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"${config_schema}" --yaml --yaml-out "${platform_yaml}" --sel4arch
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"${KernelSel4Arch}" --addrspace-max "${KernelPaddrUserTop}" --json --json-out
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"${platform_json}"
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RESULT_VARIABLE error
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)
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if(error)
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message(FATAL_ERROR "Failed to generate from DTB: ${device_dest}")
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endif()
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endif()
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file(READ "${compatibility_outfile}" compatibility_strings)
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# Mark all file dependencies as CMake rerun dependencies.
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set(cmake_deps ${deps} ${KernelDTSIntermediate} ${KernelDTSList} ${compatibility_outfile})
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set_property(
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DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
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APPEND
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PROPERTY CMAKE_CONFIGURE_DEPENDS ${cmake_deps}
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)
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include(src/drivers/config.cmake)
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endif()
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# Enshrine common variables in the config
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config_set(KernelHaveFPU HAVE_FPU "${KernelHaveFPU}")
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config_set(KernelPaddrUserTop PADDR_USER_DEVICE_TOP "${KernelPaddrUserTop}")
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@@ -598,4 +471,133 @@ config_option(
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DEFAULT OFF
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)
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if(DEFINED KernelDTSList AND (NOT "${KernelDTSList}" STREQUAL ""))
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set(KernelDTSIntermediate "${CMAKE_CURRENT_BINARY_DIR}/kernel.dts")
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set(
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KernelDTBPath "${CMAKE_CURRENT_BINARY_DIR}/kernel.dtb"
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CACHE INTERNAL "Location of kernel DTB file"
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)
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set(compatibility_outfile "${CMAKE_CURRENT_BINARY_DIR}/kernel_compat.txt")
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set(device_dest "${CMAKE_CURRENT_BINARY_DIR}/gen_headers/plat/machine/devices_gen.h")
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set(
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platform_yaml "${CMAKE_CURRENT_BINARY_DIR}/gen_headers/plat/machine/platform_gen.yaml"
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CACHE INTERNAL "Location of platform YAML description"
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)
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set(
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platform_json "${CMAKE_CURRENT_BINARY_DIR}/gen_headers/plat/machine/platform_gen.json"
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CACHE INTERNAL "Location of platform JSON description"
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)
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set(config_file "${CMAKE_CURRENT_SOURCE_DIR}/tools/hardware.yml")
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set(config_schema "${CMAKE_CURRENT_SOURCE_DIR}/tools/hardware_schema.yml")
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set(
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KernelCustomDTSOverlay ""
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CACHE
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STRING
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"Provide an additional list of overlays to append to the selected KernelPlatform's \
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device tree during build time"
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)
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if(NOT "${KernelCustomDTSOverlay}" STREQUAL "")
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foreach(dts_entry IN ITEMS ${KernelCustomDTSOverlay})
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if(NOT EXISTS ${dts_entry})
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message(FATAL_ERROR "Can't open external overlay file '${dts_entry}'!")
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endif()
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list(APPEND KernelDTSList "${dts_entry}")
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message(STATUS "Appending ${dts_entry} overlay")
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endforeach()
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endif()
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find_program(DTC_TOOL dtc)
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if("${DTC_TOOL}" STREQUAL "DTC_TOOL-NOTFOUND")
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message(FATAL_ERROR "Cannot find 'dtc' program.")
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endif()
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find_program(STAT_TOOL stat)
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if("${STAT_TOOL}" STREQUAL "STAT_TOOL-NOTFOUND")
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message(FATAL_ERROR "Cannot find 'stat' program.")
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endif()
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mark_as_advanced(DTC_TOOL STAT_TOOL)
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# Generate final DTS based on Linux DTS + seL4 overlay[s]
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foreach(entry ${KernelDTSList})
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get_absolute_source_or_binary(dts_tmp ${entry})
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list(APPEND dts_list "${dts_tmp}")
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endforeach()
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check_outfile_stale(regen ${KernelDTBPath} dts_list ${CMAKE_CURRENT_BINARY_DIR}/dts.cmd)
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if(regen)
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file(REMOVE "${KernelDTSIntermediate}")
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foreach(entry ${dts_list})
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file(READ ${entry} CONTENTS)
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file(APPEND "${KernelDTSIntermediate}" "${CONTENTS}")
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endforeach()
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# Compile DTS to DTB
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execute_process(
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COMMAND
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${DTC_TOOL} -q -I dts -O dtb -o ${KernelDTBPath} ${KernelDTSIntermediate}
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RESULT_VARIABLE error
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)
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if(error)
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message(FATAL_ERROR "Failed to compile DTS to DTB: ${KernelDTSIntermediate}")
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endif()
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# The macOS and GNU coreutils `stat` utilities have different interfaces.
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# Check if we're using the macOS version, otherwise assume GNU coreutils.
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# CMAKE_HOST_APPLE is a built-in CMake variable.
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if(CMAKE_HOST_APPLE AND "${STAT_TOOL}" STREQUAL "/usr/bin/stat")
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set(STAT_ARGS "-f%z")
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else()
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set(STAT_ARGS "-c '%s'")
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endif()
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# Track the size of the DTB for downstream tools
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execute_process(
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COMMAND ${STAT_TOOL} ${STAT_ARGS} ${KernelDTBPath}
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OUTPUT_VARIABLE KernelDTBSize
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OUTPUT_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE error
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)
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if(error)
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message(FATAL_ERROR "Failed to determine KernelDTBSize: ${KernelDTBPath}")
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endif()
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string(
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REPLACE
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"\'"
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""
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KernelDTBSize
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${KernelDTBSize}
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)
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set(KernelDTBSize "${KernelDTBSize}" CACHE INTERNAL "Size of DTB blob, in bytes")
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endif()
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set(deps ${KernelDTBPath} ${config_file} ${config_schema} ${HARDWARE_GEN_PATH})
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check_outfile_stale(regen ${device_dest} deps ${CMAKE_CURRENT_BINARY_DIR}/gen_header.cmd)
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if(regen)
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# Generate devices_gen header based on DTB
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message(STATUS "${device_dest} is out of date. Regenerating from DTB...")
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file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/gen_headers/plat/machine/")
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execute_process(
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COMMAND
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${PYTHON3} "${HARDWARE_GEN_PATH}" --dtb "${KernelDTBPath}" --compat-strings
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--compat-strings-out "${compatibility_outfile}" --c-header --header-out
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"${device_dest}" --hardware-config "${config_file}" --hardware-schema
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"${config_schema}" --yaml --yaml-out "${platform_yaml}" --sel4arch
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"${KernelSel4Arch}" --addrspace-max "${KernelPaddrUserTop}" --json --json-out
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"${platform_json}" --kernel-config-flags "CONFIG_PRINTING=${KernelPrinting}"
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"CONFIG_ARM_HYPERVISOR_SUPPORT=${KernelArmHypervisorSupport}"
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"CONFIG_ARM_SMMU=${KernelArmSMMU}" "CONFIG_TK1_SMMU=${KernelTk1SMMU}"
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RESULT_VARIABLE error
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)
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if(error)
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message(FATAL_ERROR "Failed to generate from DTB: ${device_dest}")
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endif()
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endif()
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file(READ "${compatibility_outfile}" compatibility_strings)
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# Mark all file dependencies as CMake rerun dependencies.
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set(cmake_deps ${deps} ${KernelDTSIntermediate} ${KernelDTSList} ${compatibility_outfile})
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set_property(
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DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
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APPEND
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PROPERTY CMAKE_CONFIGURE_DEPENDS ${cmake_deps}
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)
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include(src/drivers/config.cmake)
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endif()
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add_config_library(kernel "${configure_string}")
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