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zephyr/CMakeLists.txt
Rajavardhan Gundi 1e6adba9ef drivers/interrupt_controller: Introduce multi-level interrupt support 
In a scenario where a platform harbours multiple interrupts to the
extent the core cannot support it, an interrupt controller is added
as an additional level of interrupt. It typically combines several
sources of interrupt into one line that is then routed to the parent
controller.

Signed-off-by: Rajavardhan Gundi <rajavardhan.gundi@intel.com>
2018-02-06 22:39:05 -05:00

1118 lines
36 KiB
CMake
Raw Blame History

project(Zephyr-Kernel VERSION ${PROJECT_VERSION})
enable_language(C CXX ASM)
# *DOCUMENTATION*
#
# Note that this is *NOT* the top-level CMakeLists.txt. That's in the
# application. See the Application Development Primer documentation
# for details.
#
# To see a list of typical targets execute "make usage"
# More info can be located in ./README.rst
# Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file.
# Verify that the toolchain can compile a dummy file, if it is not we
# won't be able to test for compatiblity with certain C flags.
check_c_compiler_flag("" toolchain_is_ok)
assert(toolchain_is_ok "The toolchain is unable to build a dummy C file. See CMakeError.log.")
set(CMAKE_EXECUTABLE_SUFFIX .elf)
set(SOC_NAME ${CONFIG_SOC})
set(SOC_SERIES ${CONFIG_SOC_SERIES})
set(SOC_FAMILY ${CONFIG_SOC_FAMILY})
if("${SOC_SERIES}" STREQUAL "")
set(SOC_PATH ${SOC_NAME})
else()
set(SOC_PATH ${SOC_FAMILY}/${SOC_SERIES})
endif()
if(NOT PROPERTY_LINKER_SCRIPT_DEFINES)
set_property(GLOBAL PROPERTY PROPERTY_LINKER_SCRIPT_DEFINES -D__GCC_LINKER_CMD__)
endif()
define_property(GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT BRIEF_DOCS " " FULL_DOCS " ")
set_property( GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT elf32-little${ARCH})
# zephyr_interface is a source-less library that has all the global
# compiler options needed by all source files. All zephyr libraries,
# including the library named "zephyr" link with this library to
# obtain these flags.
add_library(zephyr_interface INTERFACE)
# zephyr is a catchall CMake library for source files that can be
# built purely with the include paths, defines, and other compiler
# flags that come with zephyr_interface.
zephyr_library_named(zephyr)
zephyr_include_directories(
kernel/include
arch/${ARCH}/include
arch/${ARCH}/soc/${SOC_PATH}
arch/${ARCH}/soc/${SOC_PATH}/include
arch/${ARCH}/soc/${SOC_FAMILY}/include
${BOARD_DIR}
include
include/drivers
${PROJECT_BINARY_DIR}/include/generated
${USERINCLUDE}
${STDINCLUDE}
)
zephyr_compile_definitions(
KERNEL
__ZEPHYR__=1
)
if(NOT CONFIG_COVERAGE)
zephyr_compile_definitions(
_FORTIFY_SOURCE=2
)
endif()
# We need to set an optimization level.
# Default to -Os
# unless CONFIG_NO_OPTIMIZATIONS is set, then it is -O0
# or unless CONFIG_DEBUG is set, then it is -Og
#
# also, some toolchain's break with -Os, and some toolchain's break
# with -Og so allow them to override what flag to use
#
# Finally, the user can use Kconfig to add compiler options that will
# come after these options and override them
set_ifndef(OPTIMIZE_FOR_NO_OPTIMIZATIONS_FLAG "-O0")
set_ifndef(OPTIMIZE_FOR_DEBUG_FLAG "-Og")
set_ifndef(OPTIMIZE_FOR_SIZE_FLAG "-Os")
if(CONFIG_NO_OPTIMIZATIONS)
set(OPTIMIZATION_FLAG ${OPTIMIZE_FOR_NO_OPTIMIZATIONS_FLAG})
elseif(CONFIG_DEBUG_OPTIMIZATIONS)
set(OPTIMIZATION_FLAG ${OPTIMIZE_FOR_DEBUG_FLAG})
elseif(CONFIG_SIZE_OPTIMIZATIONS)
set(OPTIMIZATION_FLAG ${OPTIMIZE_FOR_SIZE_FLAG}) # Default
else()
assert(0 "Unreachable code. Expected optimization level to have been chosen. See misc/Kconfig.")
endif()
zephyr_compile_options(
${OPTIMIZATION_FLAG} # Usually -Os
-g # TODO: build configuration enough?
-Wall
-Wformat
-Wformat-security
-Wno-format-zero-length
-imacros ${AUTOCONF_H}
-ffreestanding
-Wno-main
${NOSTDINC_F}
)
zephyr_compile_options(
$<$<COMPILE_LANGUAGE:C>:-std=c99>
$<$<COMPILE_LANGUAGE:CXX>:-std=c++11>
$<$<COMPILE_LANGUAGE:CXX>:-fcheck-new>
$<$<COMPILE_LANGUAGE:CXX>:-ffunction-sections>
$<$<COMPILE_LANGUAGE:CXX>:-fdata-sections>
$<$<COMPILE_LANGUAGE:CXX>:-fno-rtti>
$<$<COMPILE_LANGUAGE:CXX>:-fno-exceptions>
$<$<COMPILE_LANGUAGE:ASM>:-xassembler-with-cpp>
$<$<COMPILE_LANGUAGE:ASM>:-D_ASMLANGUAGE>
)
if(NOT CONFIG_NATIVE_APPLICATION)
zephyr_ld_options(
-nostartfiles
-nodefaultlibs
-nostdlib
-static
-no-pie
)
endif()
# ==========================================================================
#
# cmake -DW=... settings
#
# W=1 - warnings that may be relevant and does not occur too often
# W=2 - warnings that occur quite often but may still be relevant
# W=3 - the more obscure warnings, can most likely be ignored
# ==========================================================================
if(W MATCHES "1")
zephyr_compile_options(
-Wextra
-Wunused
-Wno-unused-parameter
-Wmissing-declarations
-Wmissing-format-attribute
-Wold-style-definition
)
zephyr_cc_option(
-Wmissing-prototypes
-Wmissing-include-dirs
-Wunused-but-set-variable
-Wno-missing-field-initializers
)
endif()
if(W MATCHES "2")
zephyr_compile_options(
-Waggregate-return
-Wcast-align
-Wdisabled-optimization
-Wnested-externs
-Wshadow
)
zephyr_cc_option(
-Wlogical-op
-Wmissing-field-initializers
)
endif()
if(W MATCHES "3")
zephyr_compile_options(
-Wbad-function-cast
-Wcast-qual
-Wconversion
-Wpacked
-Wpadded
-Wpointer-arith
-Wredundant-decls
-Wswitch-default
)
zephyr_cc_option(
-Wpacked-bitfield-compat
-Wvla
)
endif()
# Allow the user to inject options when calling cmake, e.g.
# 'cmake -DEXTRA_CFLAGS="-Werror -Wno-deprecated-declarations" ..'
include(cmake/extra_flags.cmake)
if(CONFIG_READABLE_ASM)
zephyr_cc_option(-fno-reorder-blocks)
zephyr_cc_option(-fno-ipa-cp-clone)
zephyr_cc_option(-fno-partial-inlining)
endif()
zephyr_cc_option(-fno-asynchronous-unwind-tables)
zephyr_cc_option(-fno-pie)
zephyr_cc_option(-fno-pic)
zephyr_cc_option(-fno-strict-overflow)
zephyr_cc_option(-Wno-pointer-sign)
zephyr_compile_options_ifdef(CONFIG_STACK_CANARIES -fstack-protector-all)
if(CONFIG_OVERRIDE_FRAME_POINTER_DEFAULT)
if(CONFIG_OMIT_FRAME_POINTER)
zephyr_cc_option(-fomit-frame-pointer)
else()
zephyr_cc_option(-fno-omit-frame-pointer)
endif()
endif()
zephyr_compile_options(${CONFIG_COMPILER_OPT})
# TODO: Include arch compiler options at this point.
# TODO: This Clang check is broken
if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
zephyr_cc_option(
-Wno-unknown-warning-option
-Wno-unused-variable
-Wno-format-invalid-specifier
-Wno-gnu
# comparison of unsigned expression < 0 is always false
-Wno-tautological-compare
)
else() # GCC assumed
zephyr_cc_option(
-Wno-unused-but-set-variable
-fno-reorder-functions
)
if(NOT ${ZEPHYR_GCC_VARIANT} STREQUAL "xcc")
zephyr_cc_option(-fno-defer-pop)
endif()
endif()
zephyr_cc_option_ifdef(CONFIG_DEBUG_SECTION_MISMATCH -fno-inline-functions-called-once)
zephyr_cc_option_ifdef(CONFIG_STACK_USAGE -fstack-usage)
zephyr_system_include_directories(${NOSTDINC})
# Force an error when things like SYS_INIT(foo, ...) occur with a missing header.
zephyr_cc_option(-Werror=implicit-int)
# Prohibit date/time macros, which would make the build non-deterministic
# cc-option(-Werror=date-time)
# TODO: Archiver arguments
# ar_option(D)
set_ifndef(LINKERFLAGPREFIX -Wl)
if(NOT CONFIG_NATIVE_APPLICATION)
zephyr_ld_options(
${LINKERFLAGPREFIX},-X
${LINKERFLAGPREFIX},-N
)
endif()
zephyr_ld_options(
${LINKERFLAGPREFIX},--gc-sections
${LINKERFLAGPREFIX},--build-id=none
)
if(CONFIG_HAVE_CUSTOM_LINKER_SCRIPT)
set(LINKER_SCRIPT ${APPLICATION_SOURCE_DIR}/${CONFIG_CUSTOM_LINKER_SCRIPT})
if(NOT EXISTS LINKER_SCRIPT)
set(LINKER_SCRIPT ${CONFIG_CUSTOM_LINKER_SCRIPT})
if(NOT EXISTS LINKER_SCRIPT)
message(FATAL_ERROR "CONFIG_HAVE_CUSTOM_LINKER_SCRIPT was set, but no linker script was found at '${CONFIG_CUSTOM_LINKER_SCRIPT}'")
endif()
endif()
else()
# Try a board specific linker file
set(LINKER_SCRIPT ${BOARD_DIR}/linker.ld)
if(NOT EXISTS ${LINKER_SCRIPT})
# If not available, try an SoC specific linker file
set(LINKER_SCRIPT ${ZEPHYR_BASE}/arch/${ARCH}/soc/${SOC_PATH}/linker.ld)
endif()
endif()
if(NOT EXISTS ${LINKER_SCRIPT})
message(FATAL_ERROR "Could not find linker script: '${LINKER_SCRIPT}'. Corrupted configuration?")
endif()
configure_file(version.h.in ${PROJECT_BINARY_DIR}/include/generated/version.h)
# Unfortunately, the order in which CMakeLists.txt code is processed
# matters so we need to be careful about how we order the processing
# of subdirectories. One example is "Compiler flags added late in the
# build are not exported to external build systems #5605"; when we
# integrate with an external build system we read out all compiler
# flags when the external project is created. So an external project
# defined in subsys or ext will not get global flags added by drivers/
# or tests/ as the subdirectories are ordered now.
#
# Another example of when the order matters is the reading and writing
# of global properties such as ZEPHYR_LIBS or
# GENERATED_KERNEL_OBJECT_FILES.
#
# Arch is placed early because it defines important compiler flags
# that must be exported to external build systems defined in
# e.g. subsys/.
add_subdirectory(arch)
add_subdirectory(lib)
add_subdirectory(misc)
# We use include instead of add_subdirectory to avoid creating a new directory scope.
# This is because source file properties are directory scoped, including the GENERATED
# property which is set implicitly for custom command outputs
include(misc/generated/CMakeLists.txt)
add_subdirectory(boards)
add_subdirectory(ext)
add_subdirectory(subsys)
add_subdirectory(drivers)
add_subdirectory(tests)
set(syscall_macros_h ${ZEPHYR_BINARY_DIR}/include/generated/syscall_macros.h)
add_custom_target(syscall_macros_h_target DEPENDS ${syscall_macros_h})
add_custom_command( OUTPUT ${syscall_macros_h}
COMMAND
${PYTHON_EXECUTABLE}
${PROJECT_SOURCE_DIR}/scripts/gen_syscall_header.py
> ${syscall_macros_h}
DEPENDS ${PROJECT_SOURCE_DIR}/scripts/gen_syscall_header.py
)
# This command is a hack to support commands that are always run. Any
# target that depends on always_rebuild will always be rebuilt.
add_custom_command(OUTPUT always_rebuild COMMAND cmake -E echo Building for board ${BOARD})
set(syscall_list_h ${CMAKE_CURRENT_BINARY_DIR}/include/generated/syscall_list.h)
set(syscalls_json ${CMAKE_CURRENT_BINARY_DIR}/misc/generated/syscalls.json)
add_custom_command(
OUTPUT
${syscalls_json}
COMMAND
${PYTHON_EXECUTABLE}
${PROJECT_SOURCE_DIR}/scripts/parse_syscalls.py
--include ${PROJECT_SOURCE_DIR}/include # Read files from this dir
--json-file ${syscalls_json} # Write this file
DEPENDS always_rebuild
)
add_custom_target(syscall_list_h_target DEPENDS ${syscall_list_h})
add_custom_command(OUTPUT include/generated/syscall_dispatch.c ${syscall_list_h}
# Also, some files are written to include/generated/syscalls/
COMMAND
${PYTHON_EXECUTABLE}
${PROJECT_SOURCE_DIR}/scripts/gen_syscalls.py
--json-file ${syscalls_json} # Read this file
--base-output include/generated/syscalls # Write to this dir
--syscall-dispatch include/generated/syscall_dispatch.c # Write this file
> ${syscall_list_h} # Write stdout to this file
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
DEPENDS ${syscalls_json}
)
# Generate offsets.c.obj from offsets.c
# Generate offsets.h from offsets.c.obj
set(OFFSETS_C_PATH ${ZEPHYR_BASE}/arch/${ARCH}/core/offsets/offsets.c)
set(OFFSETS_O_PATH ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/offsets.dir/arch/${ARCH}/core/offsets/offsets.c.obj)
set(OFFSETS_H_PATH ${PROJECT_BINARY_DIR}/include/generated/offsets.h)
add_library( offsets STATIC ${OFFSETS_C_PATH})
target_link_libraries(offsets zephyr_interface)
add_dependencies( offsets
syscall_list_h_target
syscall_macros_h_target
)
add_custom_command(
OUTPUT ${OFFSETS_H_PATH}
COMMAND ${PYTHON_EXECUTABLE} ${ZEPHYR_BASE}/scripts/gen_offset_header.py
-i ${OFFSETS_O_PATH}
-o ${OFFSETS_H_PATH}
DEPENDS offsets
)
add_custom_target(offsets_h DEPENDS ${OFFSETS_H_PATH})
zephyr_include_directories(${TOOLCHAIN_INCLUDES})
zephyr_get_include_directories_for_lang(C ZEPHYR_INCLUDES)
add_subdirectory(kernel)
# Read list content
get_property(ZEPHYR_LIBS_PROPERTY GLOBAL PROPERTY ZEPHYR_LIBS)
foreach(zephyr_lib ${ZEPHYR_LIBS_PROPERTY})
# TODO: Could this become an INTERFACE property of zephyr_interface?
add_dependencies(${zephyr_lib} offsets_h)
# Verify that all (non-imported) libraries have source
# files. Libraries without source files are not supported because
# they are an indication that something has been misconfigured.
get_target_property(lib_imported ${zephyr_lib} IMPORTED)
get_target_property(lib_sources ${zephyr_lib} SOURCES)
if(lib_sources STREQUAL lib_sources-NOTFOUND
AND (NOT (${zephyr_lib} STREQUAL app))
AND (NOT lib_imported)
)
# app is not checked because it's sources are added to it after
# this CMakeLists.txt file has been processed
message(FATAL_ERROR "\
The Zephyr library '${zephyr_lib}' was created without source files. \
Empty (non-imported) libraries are not supported. \
Either make sure that the library has the sources it should have, \
or make sure it is not created when it has no source files.")
endif()
endforeach()
get_property(OUTPUT_FORMAT GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT)
get_property(LINKER_SCRIPT_DEFINES GLOBAL PROPERTY PROPERTY_LINKER_SCRIPT_DEFINES)
if(CONFIG_APPLICATION_MEMORY)
# Objects default to being in kernel space, and then we exclude
# certain items.
set(kernel_object_file_list
${ZEPHYR_LIBS_PROPERTY}
kernel
)
list(
REMOVE_ITEM
kernel_object_file_list
app
)
# The zephyr libraries in zephyr/lib/ and zephyr/test/ belong in
# userspace.
# NB: The business logic for determing what source files are in
# kernel space and what source files are in user space is
# fragile. Fix ASAP.
#
# The intended design is that certain directories are designated as
# containing userspace code and others for kernel space code. The
# implementation we have however is not working on directories of
# code, it is working on zephyr libraries. It is exploiting the fact
# that zephyr libraries follow a naming scheme as described in
# extensions.cmake:zephyr_library_get_current_dir_lib_name
#
# But code from test/ and lib/ that is placed in the "zephyr"
# library (with zephyr_sources()) will not be in a library that is
# prefixed with lib__ or test__ and will end up in the wrong address
# space.
set(application_space_dirs
lib
tests
)
foreach(f ${kernel_object_file_list})
foreach(app_dir ${application_space_dirs})
if(${f} MATCHES "^${app_dir}__") # Begins with ${app_dir}__, e.g. lib__libc
list(
REMOVE_ITEM
kernel_object_file_list
${f}
)
endif()
endforeach()
endforeach()
# Create a list ks, with relative paths to kernel space libs.
foreach(f ${kernel_object_file_list})
get_target_property(target_name ${f} NAME)
get_target_property(target_binary_dir ${f} BINARY_DIR)
string(REPLACE
${PROJECT_BINARY_DIR}
""
fixed_path
${target_binary_dir}
)
# Append / if not empty
if(fixed_path)
set(fixed_path "${fixed_path}/")
endif()
# Cut off leading / if present
if(fixed_path MATCHES "^/.+")
string(SUBSTRING ${fixed_path} 1 -1 fixed_path)
endif()
set(fixed_path "${fixed_path}lib${target_name}.a")
if(CMAKE_GENERATOR STREQUAL "Ninja")
# Ninja invokes the linker from the root of the build directory
# (APPLICATION_BINARY_DIR) instead of from the build/zephyr
# directory (PROJECT_BINARY_DIR). So for linker-defs.h to get
# the correct path we need to prefix with zephyr/.
set(fixed_path "zephyr/${fixed_path}")
endif()
list(APPEND ks ${fixed_path})
endforeach()
# We are done constructing kernel_object_file_list, now we inject this
# information into the linker script through -D's
list(LENGTH kernel_object_file_list NUM_KERNEL_OBJECT_FILES)
list(APPEND LINKER_SCRIPT_DEFINES -DNUM_KERNEL_OBJECT_FILES=${NUM_KERNEL_OBJECT_FILES})
set(i 0)
foreach(f ${ks})
list(APPEND LINKER_SCRIPT_DEFINES -DKERNEL_OBJECT_FILE_${i}=${f})
math(EXPR i "${i}+1")
endforeach()
endif() # CONFIG_APPLICATION_MEMORY
# Declare MPU userspace dependencies before the linker scripts to make
# sure the order of dependencies are met
if(CONFIG_CPU_HAS_MPU AND CONFIG_USERSPACE)
if(CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT)
set(ALIGN_SIZING_DEP app_sizing_prebuilt linker_app_sizing_script)
endif()
set(PRIV_STACK_DEP priv_stacks_prebuilt)
endif()
function(construct_add_custom_command_for_linker_pass linker_output_name output_variable)
set(linker_cmd_file_name ${linker_output_name}.cmd)
if (${linker_output_name} MATCHES "^linker_pass_final$")
set(LINKER_PASS_DEFINE -DLINKER_PASS2)
else()
set(LINKER_PASS_DEFINE "")
endif()
# Different generators deal with depfiles differently.
if(CMAKE_GENERATOR STREQUAL "Unix Makefiles")
# Note that the IMPLICIT_DEPENDS option is currently supported only
# for Makefile generators and will be ignored by other generators.
set(LINKER_SCRIPT_DEP IMPLICIT_DEPENDS C ${LINKER_SCRIPT})
elseif(CMAKE_GENERATOR STREQUAL "Ninja")
# Using DEPFILE with other generators than Ninja is an error.
set(LINKER_SCRIPT_DEP DEPFILE ${PROJECT_BINARY_DIR}/${linker_cmd_file_name}.dep)
else()
# TODO: How would the linker script dependencies work for non-linker
# script generators.
message(STATUS "Warning; this generator is not well supported. The
Linker script may not be regenerated when it should.")
set(LINKER_SCRIPT_DEP "")
endif()
set(${output_variable}
OUTPUT ${linker_cmd_file_name}
DEPENDS ${LINKER_SCRIPT}
${LINKER_SCRIPT_DEP}
COMMAND ${CMAKE_C_COMPILER}
-x assembler-with-cpp
${NOSTDINC_F}
-undef
-MD -MF ${linker_cmd_file_name}.dep -MT ${BASE_NAME}/${linker_cmd_file_name}
${ZEPHYR_INCLUDES}
${LINKER_SCRIPT_DEFINES}
${LINKER_PASS_DEFINE}
-E ${LINKER_SCRIPT}
-P # Prevent generation of debug `#line' directives.
-o ${linker_cmd_file_name}
VERBATIM
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
PARENT_SCOPE
)
endfunction()
get_filename_component(BASE_NAME ${CMAKE_CURRENT_BINARY_DIR} NAME)
construct_add_custom_command_for_linker_pass(linker custom_command)
add_custom_command(
${custom_command}
)
add_custom_target(
linker_script
DEPENDS
${ALIGN_SIZING_DEP} ${PRIV_STACK_DEP}
linker.cmd
offsets_h
)
# Give the 'linker_script' target all of the include directories so
# that cmake can successfully find the linker_script's header
# dependencies.
zephyr_get_include_directories_for_lang(C
ZEPHYR_INCLUDE_DIRS
STRIP_PREFIX # Don't use a -I prefix
)
set_property(TARGET
linker_script
PROPERTY INCLUDE_DIRECTORIES
${ZEPHYR_INCLUDE_DIRS}
)
get_property(E_KERNEL_ENTRY GLOBAL PROPERTY E_KERNEL_ENTRY)
set(zephyr_lnk
${LINKERFLAGPREFIX},-Map=${PROJECT_BINARY_DIR}/${KERNEL_MAP_NAME}
-u_OffsetAbsSyms
-u_ConfigAbsSyms
${E_KERNEL_ENTRY}
${LINKERFLAGPREFIX},--start-group
${LINKERFLAGPREFIX},--whole-archive
${ZEPHYR_LIBS_PROPERTY}
${LINKERFLAGPREFIX},--no-whole-archive
kernel
${OFFSETS_O_PATH}
${LINKERFLAGPREFIX},--end-group
${LIB_INCLUDE_DIR}
-L${PROJECT_BINARY_DIR}
${TOOLCHAIN_LIBS}
)
if(CONFIG_GEN_ISR_TABLES)
# isr_tables.c is generated from zephyr_prebuilt by
# gen_isr_tables.py
add_custom_command(
OUTPUT isr_tables.c
COMMAND ${CMAKE_OBJCOPY}
-I ${OUTPUT_FORMAT}
-O binary
--only-section=.intList
$<TARGET_FILE:zephyr_prebuilt>
isrList.bin
COMMAND ${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/arch/common/gen_isr_tables.py
--output-source isr_tables.c
--kernel $<TARGET_FILE:zephyr_prebuilt>
--intlist isrList.bin
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--debug>
--sw-isr-table
--vector-table
DEPENDS zephyr_prebuilt
)
set_property(GLOBAL APPEND PROPERTY GENERATED_KERNEL_SOURCE_FILES isr_tables.c)
endif()
if(CONFIG_ARM AND CONFIG_USERSPACE)
set(GEN_PRIV_STACKS $ENV{ZEPHYR_BASE}/scripts/gen_priv_stacks.py)
set(PROCESS_PRIV_STACKS_GPERF $ENV{ZEPHYR_BASE}/scripts/process_gperf.py)
set(PRIV_STACKS priv_stacks_hash.gperf)
set(PRIV_STACKS_OUTPUT_SRC_PRE priv_stacks_hash_preprocessed.c)
set(PRIV_STACKS_OUTPUT_SRC priv_stacks_hash.c)
set(PRIV_STACKS_OUTPUT_OBJ priv_stacks_hash.c.obj)
set(PRIV_STACKS_OUTPUT_OBJ_RENAMED priv_stacks_hash_renamed.o)
# Essentially what we are doing here is extracting some information
# out of the nearly finished elf file, generating the source code
# for a hash table based on that information, and then compiling and
# linking the hash table back into a now even more nearly finished
# elf file.
# Use the script GEN_PRIV_STACKS to scan the kernel binary's
# (zephyr_prebuilt) DWARF information to produce a table of kernel
# objects (PRIV_STACKS) which we will then pass to gperf
add_custom_command(
OUTPUT ${PRIV_STACKS}
COMMAND
${PYTHON_EXECUTABLE}
${GEN_PRIV_STACKS}
--kernel $<TARGET_FILE:priv_stacks_prebuilt>
--output ${PRIV_STACKS}
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
DEPENDS priv_stacks_prebuilt
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS})
# Use gperf to generate C code (PRIV_STACKS_OUTPUT_SRC_PRE) which implements a
# perfect hashtable based on PRIV_STACKS
add_custom_command(
OUTPUT ${PRIV_STACKS_OUTPUT_SRC_PRE}
COMMAND
${GPERF} -C
--output-file ${PRIV_STACKS_OUTPUT_SRC_PRE}
${PRIV_STACKS}
DEPENDS priv_stacks
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks_output_src_pre DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC_PRE})
# For our purposes the code/data generated by gperf is not optimal.
#
# The script PROCESS_GPERF creates a new c file OUTPUT_SRC based on
# OUTPUT_SRC_PRE to greatly reduce the amount of code/data generated
# since we know we are always working with pointer values
add_custom_command(
OUTPUT ${PRIV_STACKS_OUTPUT_SRC}
COMMAND
${PROCESS_PRIV_STACKS_GPERF}
-i ${PRIV_STACKS_OUTPUT_SRC_PRE}
-o ${PRIV_STACKS_OUTPUT_SRC}
-p "struct _k_priv_stack_map"
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
DEPENDS priv_stacks_output_src_pre
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks_output_src DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC})
# We need precise control of where generated text/data ends up in the final
# kernel image. Disable function/data sections and use objcopy to move
# generated data into special section names
add_library(priv_stacks_output_lib STATIC
${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC}
)
target_link_libraries(priv_stacks_output_lib zephyr_interface)
# Turn off -ffunction-sections, etc.
# NB: Using a library instead of target_compile_options(priv_stacks_output_lib
# [...]) because a library's options have precedence
add_library(priv_stacks_output_lib_interface INTERFACE)
target_compile_options(priv_stacks_output_lib_interface INTERFACE
-fno-function-sections
-fno-data-sections
)
target_link_libraries(priv_stacks_output_lib priv_stacks_output_lib_interface)
set(PRIV_STACKS_OUTPUT_OBJ_PATH ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/priv_stacks_output_lib.dir/${PRIV_STACKS_OUTPUT_OBJ})
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_OBJ_RENAMED}
COMMAND
${CMAKE_OBJCOPY}
--rename-section .bss=.priv_stacks.noinit
--rename-section .data=.priv_stacks.data
--rename-section .text=.priv_stacks.text
--rename-section .rodata=.priv_stacks.rodata
${PRIV_STACKS_OUTPUT_OBJ_PATH}
${PRIV_STACKS_OUTPUT_OBJ_RENAMED}
DEPENDS priv_stacks_output_lib
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks_output_obj_renamed DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_OBJ_RENAMED})
add_library(priv_stacks_output_obj_renamed_lib STATIC IMPORTED GLOBAL)
set_property(
TARGET priv_stacks_output_obj_renamed_lib
PROPERTY
IMPORTED_LOCATION ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_OBJ_RENAMED}
)
add_dependencies(
priv_stacks_output_obj_renamed_lib
priv_stacks_output_obj_renamed
)
set_property(GLOBAL APPEND PROPERTY GENERATED_KERNEL_OBJECT_FILES priv_stacks_output_obj_renamed_lib)
endif()
if(CONFIG_USERSPACE)
set(GEN_KOBJ_LIST ${ZEPHYR_BASE}/scripts/gen_kobject_list.py)
set(PROCESS_GPERF ${ZEPHYR_BASE}/scripts/process_gperf.py)
set(OBJ_LIST kobject_hash.gperf)
set(OUTPUT_SRC_PRE kobject_hash_preprocessed.c)
set(OUTPUT_SRC kobject_hash.c)
set(OUTPUT_OBJ kobject_hash.c.obj)
set(OUTPUT_OBJ_RENAMED kobject_hash_renamed.o)
# Essentially what we are doing here is extracting some information
# out of the nearly finished elf file, generating the source code
# for a hash table based on that information, and then compiling and
# linking the hash table back into a now even more nearly finished
# elf file.
# Use the script GEN_KOBJ_LIST to scan the kernel binary's
# (zephyr_prebuilt) DWARF information to produce a table of kernel
# objects (OBJ_LIST) which we will then pass to gperf
add_custom_command(
OUTPUT ${OBJ_LIST}
COMMAND
${PYTHON_EXECUTABLE}
${GEN_KOBJ_LIST}
--kernel $<TARGET_FILE:zephyr_prebuilt>
--output ${OBJ_LIST}
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
DEPENDS zephyr_prebuilt
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(obj_list DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${OBJ_LIST})
# Use gperf to generate C code (OUTPUT_SRC_PRE) which implements a
# perfect hashtable based on OBJ_LIST
add_custom_command(
OUTPUT ${OUTPUT_SRC_PRE}
COMMAND
${GPERF}
--output-file ${OUTPUT_SRC_PRE}
${OBJ_LIST}
DEPENDS obj_list ${OBJ_LIST}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(output_src_pre DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_SRC_PRE})
# For our purposes the code/data generated by gperf is not optimal.
#
# The script PROCESS_GPERF creates a new c file OUTPUT_SRC based on
# OUTPUT_SRC_PRE to greatly reduce the amount of code/data generated
# since we know we are always working with pointer values
add_custom_command(
OUTPUT ${OUTPUT_SRC}
COMMAND
${PROCESS_GPERF}
-i ${OUTPUT_SRC_PRE}
-o ${OUTPUT_SRC}
-p "struct _k_object"
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
DEPENDS output_src_pre ${OUTPUT_SRC_PRE}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(output_src DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_SRC})
# We need precise control of where generated text/data ends up in the final
# kernel image. Disable function/data sections and use objcopy to move
# generated data into special section names
add_library(output_lib STATIC
${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_SRC}
)
# always compile kobject_hash.c at optimization -Os
set_source_files_properties(${OUTPUT_SRC} PROPERTIES COMPILE_FLAGS -Os)
target_link_libraries(output_lib zephyr_interface)
# Turn off -ffunction-sections, etc.
# NB: Using a library instead of target_compile_options(output_lib
# [...]) because a library's options have precedence
add_library(output_lib_interface INTERFACE)
target_compile_options(output_lib_interface INTERFACE
-fno-function-sections
-fno-data-sections
)
target_link_libraries(output_lib output_lib_interface)
set(OUTPUT_OBJ_PATH ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/output_lib.dir/${OUTPUT_OBJ})
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_OBJ_RENAMED}
COMMAND
${CMAKE_OBJCOPY}
--rename-section .data=.kobject_data.data
--rename-section .text=.kobject_data.text
--rename-section .rodata=.kobject_data.rodata
${OUTPUT_OBJ_PATH}
${OUTPUT_OBJ_RENAMED}
DEPENDS output_lib
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(output_obj_renamed DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_OBJ_RENAMED})
add_library(output_obj_renamed_lib STATIC IMPORTED GLOBAL)
set_property(
TARGET output_obj_renamed_lib
PROPERTY
IMPORTED_LOCATION ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_OBJ_RENAMED}
)
add_dependencies(
output_obj_renamed_lib
output_obj_renamed
)
set_property(GLOBAL APPEND PROPERTY GENERATED_KERNEL_OBJECT_FILES output_obj_renamed_lib)
endif()
# Read global variables into local variables
get_property(GKOF GLOBAL PROPERTY GENERATED_KERNEL_OBJECT_FILES)
get_property(GKSF GLOBAL PROPERTY GENERATED_KERNEL_SOURCE_FILES)
get_property(TOPT GLOBAL PROPERTY TOPT)
set_ifndef( TOPT -T)
configure_file(
$ENV{ZEPHYR_BASE}/include/arch/arm/cortex_m/scripts/app_data_alignment.ld
${PROJECT_BINARY_DIR}/include/generated/app_data_alignment.ld)
if(CONFIG_CPU_HAS_MPU AND CONFIG_USERSPACE)
if(CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT)
construct_add_custom_command_for_linker_pass(linker_app_sizing custom_command)
add_custom_command(
${custom_command}
)
add_custom_target(
linker_app_sizing_script
DEPENDS
linker_app_sizing.cmd
offsets_h
)
set_property(TARGET
linker_app_sizing_script
PROPERTY INCLUDE_DIRECTORIES
${ZEPHYR_INCLUDE_DIRS}
)
# For systems with MPUs, the size of the application data section must
# be determined so that MPU alignment requirements can be met.
# Create a app_sizing_prebuilt target so we can do this before the
# other ELF files are built
set(GEN_APP_ALIGN $ENV{ZEPHYR_BASE}/scripts/gen_alignment_script.py)
add_executable( app_sizing_prebuilt misc/empty_file.c)
target_link_libraries(app_sizing_prebuilt ${TOPT} ${PROJECT_BINARY_DIR}/linker_app_sizing.cmd ${zephyr_lnk})
set_property(TARGET app_sizing_prebuilt PROPERTY LINK_DEPENDS ${PROJECT_BINARY_DIR}/linker_app_sizing.cmd)
add_dependencies( app_sizing_prebuilt linker_app_sizing_script offsets)
add_custom_command(
TARGET app_sizing_prebuilt
POST_BUILD
COMMAND ${PYTHON_EXECUTABLE} ${GEN_APP_ALIGN}
--output ./include/generated/app_data_alignment.ld
--kernel $<TARGET_FILE:app_sizing_prebuilt>
VERBATIM
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/
)
endif()
construct_add_custom_command_for_linker_pass(linker_priv_stacks custom_command)
add_custom_command(
${custom_command}
)
add_custom_target(
linker_priv_stacks_script
DEPENDS
${ALIGN_SIZING_DEP}
linker_priv_stacks.cmd
offsets_h
)
set_property(TARGET
linker_priv_stacks_script
PROPERTY INCLUDE_DIRECTORIES
${ZEPHYR_INCLUDE_DIRS}
)
set(PRIV_STACK_LIB priv_stacks_output_obj_renamed_lib)
add_executable( priv_stacks_prebuilt misc/empty_file.c)
target_link_libraries(priv_stacks_prebuilt ${TOPT} ${PROJECT_BINARY_DIR}/linker_priv_stacks.cmd ${zephyr_lnk})
set_property(TARGET priv_stacks_prebuilt PROPERTY LINK_DEPENDS ${PROJECT_BINARY_DIR}/linker_priv_stacks.cmd)
add_dependencies( priv_stacks_prebuilt ${ALIGN_SIZING_DEP} linker_priv_stacks_script offsets)
endif()
# FIXME: Is there any way to get rid of empty_file.c?
add_executable( zephyr_prebuilt misc/empty_file.c)
target_link_libraries(zephyr_prebuilt ${TOPT} ${PROJECT_BINARY_DIR}/linker.cmd ${PRIV_STACK_LIB} ${zephyr_lnk})
set_property(TARGET zephyr_prebuilt PROPERTY LINK_DEPENDS ${PROJECT_BINARY_DIR}/linker.cmd)
add_dependencies( zephyr_prebuilt ${ALIGN_SIZING_DEP} ${PRIV_STACK_DEP} linker_script offsets)
if(NOT CONFIG_NATIVE_APPLICATION)
set(NOSTDINC_F -nostdinc)
endif()
if(GKOF OR GKSF)
set(logical_target_for_zephyr_elf kernel_elf)
# The second linker pass uses the same source linker script of the
# first pass (LINKER_SCRIPT), but this time with a different output
# file and preprocessed with the define LINKER_PASS2.
construct_add_custom_command_for_linker_pass(linker_pass_final custom_command)
add_custom_command(
${custom_command}
)
add_custom_target(
linker_pass_final_script
DEPENDS
${ALIGN_SIZING_DEP} ${PRIV_STACK_DEP}
zephyr_prebuilt
linker_pass_final.cmd
offsets_h
)
set_property(TARGET
linker_pass_final_script
PROPERTY INCLUDE_DIRECTORIES
${ZEPHYR_INCLUDE_DIRS}
)
add_executable( kernel_elf misc/empty_file.c ${GKSF})
target_link_libraries(kernel_elf ${GKOF} ${TOPT} ${PROJECT_BINARY_DIR}/linker_pass_final.cmd ${zephyr_lnk})
set_property(TARGET kernel_elf PROPERTY LINK_DEPENDS ${PROJECT_BINARY_DIR}/linker_pass_final.cmd)
add_dependencies( kernel_elf ${ALIGN_SIZING_DEP} ${PRIV_STACK_DEP} linker_pass_final_script)
else()
set(logical_target_for_zephyr_elf zephyr_prebuilt)
# Use the prebuilt elf as the final elf since we don't have a
# generation stage.
endif()
# To avoid having the same logical target name for the zephyr lib and
# the zephyr elf, we set the kernel_elf file name to zephyr.elf.
set_target_properties(${logical_target_for_zephyr_elf} PROPERTIES OUTPUT_NAME ${KERNEL_NAME})
set(post_build_commands "")
list_append_ifdef(CONFIG_CHECK_LINK_MAP
post_build_commands
COMMAND ${PYTHON_EXECUTABLE} ${ZEPHYR_BASE}/scripts/check_link_map.py ${KERNEL_MAP_NAME}
)
list_append_ifdef(
CONFIG_BUILD_OUTPUT_HEX
post_build_commands
COMMAND ${CMAKE_OBJCOPY} -S -Oihex -R .comment -R COMMON -R .eh_frame ${KERNEL_ELF_NAME} ${KERNEL_HEX_NAME}
)
list_append_ifdef(
CONFIG_BUILD_OUTPUT_BIN
post_build_commands
COMMAND ${CMAKE_OBJCOPY} -S -Obinary -R .comment -R COMMON -R .eh_frame ${KERNEL_ELF_NAME} ${KERNEL_BIN_NAME}
)
list_append_ifdef(
CONFIG_BUILD_OUTPUT_S19
post_build_commands
COMMAND ${CMAKE_OBJCOPY} --srec-len 1 --output-target=srec ${KERNEL_ELF_NAME} ${KERNEL_S19_NAME}
)
list_append_ifdef(
CONFIG_OUTPUT_DISASSEMBLY
post_build_commands
COMMAND ${CMAKE_OBJDUMP} -S ${KERNEL_ELF_NAME} > ${KERNEL_LST_NAME}
)
list_append_ifdef(
CONFIG_OUTPUT_STAT
post_build_commands
COMMAND ${CMAKE_READELF} -e ${KERNEL_ELF_NAME} > ${KERNEL_STAT_NAME}
)
list_append_ifdef(
CONFIG_BUILD_OUTPUT_STRIPPED
post_build_commands
COMMAND ${CMAKE_STRIP} --strip-all ${KERNEL_ELF_NAME} -o ${KERNEL_STRIP_NAME}
)
list_append_ifdef(
CONFIG_BUILD_OUTPUT_EXE
post_build_commands
COMMAND ${CMAKE_COMMAND} -E rename ${KERNEL_ELF_NAME} ${KERNEL_EXE_NAME}
)
add_custom_command(
TARGET ${logical_target_for_zephyr_elf}
POST_BUILD
${post_build_commands}
COMMENT "Generating files from zephyr.elf for board: ${BOARD}"
# NB: COMMENT only works for some CMake-Generators
)
if(CONFIG_OUTPUT_PRINT_MEMORY_USAGE)
# Use --print-memory-usage with the first link.
#
# Don't use this option with the second link because seeing it twice
# could confuse users and using it on the second link would suppress
# it when the first link has a ram/flash-usage issue.
set(option ${LINKERFLAGPREFIX},--print-memory-usage)
string(MAKE_C_IDENTIFIER check${option} check)
set(SAVED_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${option}")
check_c_compiler_flag("" ${check})
set(CMAKE_REQUIRED_FLAGS ${SAVED_CMAKE_REQUIRED_FLAGS})
target_link_libraries_ifdef(${check} zephyr_prebuilt ${option})
endif()
if(EMU_PLATFORM)
include(${ZEPHYR_BASE}/cmake/emu/${EMU_PLATFORM}.cmake)
else()
add_custom_target(run
COMMAND
${CMAKE_COMMAND} -E echo
"==================================================="
"Emulation/Simulation not supported with this board."
"==================================================="
)
endif()
add_subdirectory(cmake/flash)
add_subdirectory(cmake/usage)
add_subdirectory(cmake/reports)
include(cmake/ccache.cmake)
if(CONFIG_ASSERT)
message(WARNING "
------------------------------------------------------------
--- WARNING: __ASSERT() statements are globally ENABLED ---
--- The kernel will run more slowly and uses more memory ---
------------------------------------------------------------"
)
endif()
if(CONFIG_BOARD_DEPRECATED)
message(WARNING "
WARNING: The board '${BOARD}' is deprecated and will be
removed in version ${CONFIG_BOARD_DEPRECATED}"
)
endif()
if(CONFIG_X86 AND CONFIG_USERSPACE AND NOT CONFIG_X86_NO_MELTDOWN)
message(WARNING "
WARNING: You have enabled CONFIG_USERSPACE on an x86-based target.
If your CPU is vulnerable to the Meltdown CPU bug, security of
supervisor-only memory pages is not guaranteed. This version of Zephyr
does not contain a fix for this issue."
)
endif()
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