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esp-idf/components/ulp/cmake/IDFULPProject.cmake
T
Meet Patel a3f167f1c4 refactor(ulp): Allow both ULP-FSM and ULP-RISCV to enable at build time 
Updated kconfig option type and other supporting changes in build system
to allow enabling both ULP FSM and ULP RISCV simultaneously. Users can
choose at run time which one to initialize and use.
NOTE: Both ULP FSM and ULP RISCV can't be used simultaneously at run
time because they share some common hardware like RTC slow memory space.

Closes https://github.com/espressif/esp-idf/issues/12999
2026-03-15 14:01:30 +05:30

274 lines
13 KiB
CMake
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include(${SDKCONFIG_CMAKE})
enable_language(C ASM)
set(CMAKE_EXECUTABLE_SUFFIX ".elf")
# Logic to determine ULP type and set reusable flags
set(BUILD_RISCV OFF)
set(BUILD_FSM OFF)
set(BUILD_LP_CORE OFF)
# If ULP_TYPE is explicitly set, use it; otherwise fall back to CONFIG checks
if(ULP_TYPE)
string(TOLOWER "${ULP_TYPE}" ulp_type_lower)
if(ulp_type_lower STREQUAL "riscv")
set(BUILD_RISCV ON)
elseif(ulp_type_lower STREQUAL "fsm")
set(BUILD_FSM ON)
elseif(ulp_type_lower STREQUAL "lp_core")
set(BUILD_LP_CORE ON)
endif()
elseif(CONFIG_ULP_COPROC_TYPE_RISCV)
set(BUILD_RISCV ON)
elseif(CONFIG_ULP_COPROC_TYPE_LP_CORE)
set(BUILD_LP_CORE ON)
elseif(CONFIG_ULP_COPROC_TYPE_FSM)
set(BUILD_FSM ON)
endif()
# Check the supported assembler version
if(BUILD_FSM)
check_expected_tool_version("esp32ulp-elf" ${CMAKE_ASM_COMPILER})
endif()
function(ulp_apply_default_options ulp_app_name)
if(BUILD_RISCV)
target_link_options(${ulp_app_name} PRIVATE "-nostartfiles")
target_link_options(${ulp_app_name} PRIVATE -Wl,--gc-sections)
target_link_options(${ulp_app_name} PRIVATE "-Wl,--no-warn-rwx-segments")
target_link_options(${ulp_app_name} PRIVATE -Wl,-Map=${CMAKE_CURRENT_BINARY_DIR}/${ulp_app_name}.map)
elseif(BUILD_LP_CORE)
target_link_options(${ulp_app_name} PRIVATE "-nostartfiles")
target_link_options(${ulp_app_name} PRIVATE "-Wl,--no-warn-rwx-segments")
target_link_options(${ulp_app_name} PRIVATE -Wl,--gc-sections)
target_link_options(${ulp_app_name} PRIVATE -Wl,-Map=${CMAKE_CURRENT_BINARY_DIR}/${ulp_app_name}.map)
elseif(BUILD_FSM)
target_link_options(${ulp_app_name} PRIVATE -Map=${CMAKE_CURRENT_BINARY_DIR}/${ulp_app_name}.map)
endif()
endfunction()
function(ulp_apply_default_sources ulp_app_name)
function(create_arg_file arguments output_file)
# Escape all spaces
list(TRANSFORM arguments REPLACE " " "\\\\ ")
# Create a single string with all args separated by space
list(JOIN arguments " " arguments)
# Write it into the response file
file(WRITE ${output_file} ${arguments})
endfunction()
message(STATUS "Building ULP app ${ulp_app_name}")
get_filename_component(sdkconfig_dir ${SDKCONFIG_HEADER} DIRECTORY)
foreach(include ${COMPONENT_INCLUDES})
list(APPEND component_includes -I${include})
endforeach()
list(REMOVE_DUPLICATES component_includes)
list(APPEND ULP_PREPRO_ARGS ${component_includes})
list(APPEND ULP_PREPRO_ARGS -I${COMPONENT_DIR})
list(APPEND ULP_PREPRO_ARGS -I${sdkconfig_dir})
list(APPEND ULP_PREPRO_ARGS -I${IDF_PATH}/components/esp_system/ld)
target_include_directories(${ulp_app_name} PRIVATE ${COMPONENT_INCLUDES} ${sdkconfig_dir})
# Pre-process the linker script
if(BUILD_RISCV)
set(ULP_LD_TEMPLATE ${IDF_PATH}/components/ulp/ld/ulp_riscv.ld)
elseif(BUILD_LP_CORE)
set(ULP_LD_TEMPLATE ${IDF_PATH}/components/ulp/ld/lp_core_riscv.ld)
elseif(BUILD_FSM)
set(ULP_LD_TEMPLATE ${IDF_PATH}/components/ulp/ld/ulp_fsm.ld)
else()
message(FATAL_ERROR "Unable to determine ULP type. ")
endif()
get_filename_component(ULP_LD_SCRIPT ${ULP_LD_TEMPLATE} NAME)
# Put all arguments to the list
set(preprocessor_args -D__ASSEMBLER__ -E -P -xc -o ${ULP_LD_SCRIPT} ${ULP_PREPRO_ARGS} ${ULP_LD_TEMPLATE})
set(compiler_arguments_file ${CMAKE_CURRENT_BINARY_DIR}/${ULP_LD_SCRIPT}_args.txt)
create_arg_file("${preprocessor_args}" "${compiler_arguments_file}")
add_custom_command(OUTPUT ${ULP_LD_SCRIPT}
COMMAND ${CMAKE_C_COMPILER} @${compiler_arguments_file}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
MAIN_DEPENDENCY ${ULP_LD_TEMPLATE}
DEPENDS ${SDKCONFIG_HEADER}
COMMENT "Generating ${ULP_LD_SCRIPT} linker script..."
VERBATIM)
add_custom_target(ld_script DEPENDS ${ULP_LD_SCRIPT})
add_dependencies(${ulp_app_name} ld_script)
target_link_options(${ulp_app_name} PRIVATE SHELL:-T ${CMAKE_CURRENT_BINARY_DIR}/${ULP_LD_SCRIPT})
# To avoid warning "Manually-specified variables were not used by the project"
set(bypassWarning "${IDF_TARGET}")
set(bypassWarning "${ULP_VAR_PREFIX}")
set(bypassWarning "${ULP_TYPE}")
# Save user sources before adding core sources
set(ULP_USER_SOURCES ${ULP_S_SOURCES})
# Clear ULP_S_SOURCES and rebuild it with only the sources we need
set(ULP_S_SOURCES ${ULP_USER_SOURCES})
if(BUILD_RISCV)
#risc-v ulp uses extra files for building:
list(APPEND ULP_S_SOURCES
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/ulp_riscv_vectors.S"
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/start.S"
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/ulp_riscv_adc.c"
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/ulp_riscv_lock.c"
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/ulp_riscv_uart.c"
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/ulp_riscv_print.c"
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/ulp_riscv_i2c.c"
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/ulp_riscv_utils.c"
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/ulp_riscv_touch.c"
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/ulp_riscv_gpio.c"
"${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/ulp_riscv_interrupt.c")
target_sources(${ulp_app_name} PRIVATE ${ULP_S_SOURCES})
#Makes the csr utillies for riscv visible:
target_include_directories(${ulp_app_name} PRIVATE "${IDF_PATH}/components/ulp/ulp_riscv/ulp_core/include"
"${IDF_PATH}/components/ulp/ulp_riscv/shared/include"
"${IDF_PATH}/components/riscv/include")
target_link_options(${ulp_app_name} PRIVATE SHELL:-T ${IDF_PATH}/components/ulp/ld/${IDF_TARGET}.peripherals.ld)
target_compile_definitions(${ulp_app_name} PRIVATE IS_ULP_COCPU)
target_compile_definitions(${ulp_app_name} PRIVATE ULP_RISCV_REGISTER_OPS)
elseif(BUILD_FSM)
foreach(ulp_s_source ${ULP_S_SOURCES})
get_filename_component(ulp_ps_source ${ulp_s_source} NAME_WE)
set(ulp_ps_output ${CMAKE_CURRENT_BINARY_DIR}/${ulp_ps_source}.ulp.S)
# Put all arguments to the list
set(preprocessor_args -D__ASSEMBLER__ -E -P -xc -o ${ulp_ps_output} ${ULP_PREPRO_ARGS} ${ulp_s_source})
set(compiler_arguments_file ${CMAKE_CURRENT_BINARY_DIR}/${ulp_ps_source}_args.txt)
create_arg_file("${preprocessor_args}" "${compiler_arguments_file}")
# Generate preprocessed assembly files.
add_custom_command(OUTPUT ${ulp_ps_output}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMAND ${CMAKE_C_COMPILER} @${compiler_arguments_file}
DEPENDS ${ulp_s_source}
VERBATIM)
# During assembly file compilation, output listing files as well.
set_source_files_properties(${ulp_ps_output}
PROPERTIES COMPILE_FLAGS
"-al=${CMAKE_CURRENT_BINARY_DIR}/${ulp_ps_source}.lst")
list(APPEND ULP_PS_SOURCES ${ulp_ps_output})
endforeach()
target_sources(${ulp_app_name} PRIVATE ${ULP_PS_SOURCES})
elseif(BUILD_LP_CORE)
list(APPEND ULP_S_SOURCES
"${IDF_PATH}/components/ulp/lp_core/lp_core/start.S"
"${IDF_PATH}/components/ulp/lp_core/lp_core/vector.S"
"${IDF_PATH}/components/ulp/lp_core/lp_core/port/${IDF_TARGET}/vector_table.S"
"${IDF_PATH}/components/ulp/lp_core/shared/ulp_lp_core_memory_shared.c"
"${IDF_PATH}/components/ulp/lp_core/shared/ulp_lp_core_lp_uart_shared.c"
"${IDF_PATH}/components/esp_driver_uart/src/uart_wakeup.c"
"${IDF_PATH}/components/ulp/lp_core/shared/ulp_lp_core_lp_timer_shared.c"
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_startup.c"
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_utils.c"
"${IDF_PATH}/components/esp_hal_uart/uart_hal_iram.c"
"${IDF_PATH}/components/esp_hal_uart/uart_hal.c"
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_uart.c"
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_print.c"
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_panic.c"
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_interrupt.c"
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_i2c.c"
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_spi.c"
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_ubsan.c"
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_mailbox.c"
"${IDF_PATH}/components/ulp/lp_core/shared/ulp_lp_core_lp_adc_shared.c"
"${IDF_PATH}/components/ulp/lp_core/shared/ulp_lp_core_lp_vad_shared.c"
"${IDF_PATH}/components/ulp/lp_core/shared/ulp_lp_core_critical_section_shared.c")
if(CONFIG_SOC_LP_MAILBOX_SUPPORTED)
list(APPEND ULP_S_SOURCES
"${IDF_PATH}/components/ulp/lp_core/lp_core/port/lp_core_mailbox_impl_hw.c")
else()
list(APPEND ULP_S_SOURCES
"${IDF_PATH}/components/ulp/lp_core/lp_core/port/lp_core_mailbox_impl_sw.c")
endif()
if(CONFIG_SOC_TOUCH_SENSOR_SUPPORTED)
list(APPEND ULP_S_SOURCES
"${IDF_PATH}/components/ulp/lp_core/lp_core/lp_core_touch.c")
endif()
set(target_folder ${IDF_TARGET})
target_link_options(${ulp_app_name}
PRIVATE SHELL:-T ${IDF_PATH}/components/soc/${target_folder}/ld/${IDF_TARGET}.peripherals.ld)
if(CONFIG_ESP_ROM_HAS_LP_ROM)
target_link_options(${ulp_app_name}
PRIVATE SHELL:-T ${IDF_PATH}/components/esp_rom/${IDF_TARGET}/ld/${IDF_TARGET}lp.rom.ld)
target_link_options(${ulp_app_name}
PRIVATE SHELL:-T ${IDF_PATH}/components/esp_rom/${IDF_TARGET}/ld/${IDF_TARGET}lp.rom.newlib.ld)
target_link_options(${ulp_app_name}
PRIVATE SHELL:-T ${IDF_PATH}/components/esp_rom/${IDF_TARGET}/ld/${IDF_TARGET}lp.rom.version.ld)
target_link_options(${ULP_APP_NAME}
PRIVATE SHELL:-T ${IDF_PATH}/components/esp_rom/${IDF_TARGET}/ld/${IDF_TARGET}lp.rom.api.ld)
endif()
target_sources(${ulp_app_name} PRIVATE ${ULP_S_SOURCES})
target_include_directories(${ulp_app_name} PRIVATE "${IDF_PATH}/components/ulp/lp_core/lp_core/include"
"${IDF_PATH}/components/ulp/lp_core/shared/include")
target_compile_definitions(${ulp_app_name} PRIVATE IS_ULP_COCPU)
endif()
endfunction()
function(ulp_add_build_binary_targets ulp_app_name)
cmake_parse_arguments(ULP "" "PREFIX" "" ${ARGN})
if(NOT ULP_PREFIX)
set(ULP_PREFIX "ulp_")
endif()
if(ADD_PICOLIBC_SPECS)
target_compile_options(${ulp_app_name} PRIVATE $<$<COMPILE_LANG_AND_ID:C,GNU>:-specs=picolibc.specs>)
target_compile_options(${ulp_app_name} PRIVATE $<$<COMPILE_LANG_AND_ID:CXX,GNU>:-specs=picolibcpp.specs>)
endif()
if(BUILD_LP_CORE)
set(ULP_BASE_ADDR "0x0")
else()
set(ULP_BASE_ADDR "0x50000000")
endif()
set(ULP_MAP_GEN ${PYTHON} ${IDF_PATH}/components/ulp/esp32ulp_mapgen.py)
# Dump the list of global symbols in a convenient format
add_custom_command(OUTPUT ${ULP_APP_NAME}.sym
COMMAND ${CMAKE_READELF} -sW $<TARGET_FILE:${ulp_app_name}> > ${ulp_app_name}.sym
DEPENDS ${ulp_app_name}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
# Dump the binary for inclusion into the project
add_custom_command(OUTPUT ${ulp_app_name}.bin
COMMAND ${CMAKE_OBJCOPY} -O binary $<TARGET_FILE:${ulp_app_name}> ${ulp_app_name}.bin
DEPENDS ${ulp_app_name}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
add_custom_command(OUTPUT ${ulp_app_name}.ld ${ulp_app_name}.h
COMMAND ${ULP_MAP_GEN} -s ${ulp_app_name}.sym -o ${ulp_app_name}
--base ${ULP_BASE_ADDR} --prefix ${ULP_PREFIX}
DEPENDS ${ulp_app_name}.sym
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
# Building the component separately from the project should result in
# ULP files being built.
add_custom_target(build
DEPENDS ${ulp_app_name} ${ulp_app_name}.bin ${ulp_app_name}.sym
${CMAKE_CURRENT_BINARY_DIR}/${ulp_app_name}.ld
${CMAKE_CURRENT_BINARY_DIR}/${ulp_app_name}.h
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
endfunction()
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