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457 lines
14 KiB
457 lines
14 KiB
# General configuration options |
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# Copyright (c) 2014-2015 Wind River Systems, Inc. |
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# Copyright (c) 2016 Intel Corporation |
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# SPDX-License-Identifier: Apache-2.0 |
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menu "Modules" |
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source "$(CMAKE_BINARY_DIR)/Kconfig.modules" |
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source "modules/Kconfig" |
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endmenu |
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# Include these first so that any properties (e.g. defaults) below can be |
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# overridden in *.defconfig files (by defining symbols in multiple locations). |
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# After merging all the symbol definitions, Kconfig picks the first property |
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# (e.g. the first default) with a satisfied condition. |
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# |
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# Board defaults should be parsed before SoC defaults, because boards usually |
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# overrides SoC values. Similarly shields defaults should be parsed before |
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# boards defaults, because shields defaults override boards defaults. |
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# |
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# Note: $ARCH and $BOARD_DIR might be glob patterns. |
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source "boards/shields/*/Kconfig.defconfig" |
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source "$(BOARD_DIR)/Kconfig.defconfig" |
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source "$(SOC_DIR)/$(ARCH)/*/Kconfig.defconfig" |
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source "boards/Kconfig" |
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source "$(SOC_DIR)/Kconfig" |
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source "arch/Kconfig" |
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source "kernel/Kconfig" |
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source "dts/Kconfig" |
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source "drivers/Kconfig" |
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source "lib/Kconfig" |
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source "subsys/Kconfig" |
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source "ext/Kconfig" |
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menu "Build and Link Features" |
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menu "Linker Options" |
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choice |
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prompt "Linker Orphan Section Handling" |
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default LINKER_ORPHAN_SECTION_WARN |
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config LINKER_ORPHAN_SECTION_PLACE |
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bool "Place" |
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help |
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Linker puts orphan sections in place without warnings |
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or errors. |
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config LINKER_ORPHAN_SECTION_WARN |
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bool "Warn" |
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help |
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Linker places the orphan sections in output and issues |
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warning about those sections. |
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config LINKER_ORPHAN_SECTION_ERROR |
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bool "Error" |
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help |
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Linker exits with error when an orphan section is found. |
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endchoice |
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config CODE_DATA_RELOCATION |
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bool "Relocate code/data sections" |
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depends on ARM |
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help |
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When selected this will relocate .text, data and .bss sections from |
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the specified files and places it in the required memory region. The |
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files should be specified in the CMakeList.txt file with |
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a cmake API zephyr_code_relocate(). |
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config HAS_FLASH_LOAD_OFFSET |
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bool |
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help |
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This option is selected by targets having a FLASH_LOAD_OFFSET |
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and FLASH_LOAD_SIZE. |
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if HAS_FLASH_LOAD_OFFSET |
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config USE_DT_CODE_PARTITION |
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bool "Link application into /chosen/zephyr,code-partition from devicetree" |
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help |
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When enabled, the application will be linked into the flash partition |
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selected by the zephyr,code-partition property in /chosen in devicetree. |
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When this is disabled, the flash load offset and size can be set manually |
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below. |
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# Workaround for not being able to have commas in macro arguments |
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DT_CHOSEN_Z_CODE_PARTITION := zephyr,code-partition |
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config FLASH_LOAD_OFFSET |
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# Only user-configurable when USE_DT_CODE_PARTITION is disabled |
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hex "Kernel load offset" if !USE_DT_CODE_PARTITION |
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default $(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_CODE_PARTITION)) if USE_DT_CODE_PARTITION |
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default 0 |
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help |
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This option specifies the byte offset from the beginning of flash that |
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the kernel should be loaded into. Changing this value from zero will |
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affect the Zephyr image's link, and will decrease the total amount of |
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flash available for use by application code. |
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If unsure, leave at the default value 0. |
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config FLASH_LOAD_SIZE |
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# Only user-configurable when USE_DT_CODE_PARTITION is disabled |
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hex "Kernel load size" if !USE_DT_CODE_PARTITION |
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default $(dt_chosen_reg_size_hex,$(DT_CHOSEN_Z_CODE_PARTITION)) if USE_DT_CODE_PARTITION |
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default 0 |
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help |
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If non-zero, this option specifies the size, in bytes, of the flash |
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area that the Zephyr image will be allowed to occupy. If zero, the |
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image will be able to occupy from the FLASH_LOAD_OFFSET to the end of |
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the device. |
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If unsure, leave at the default value 0. |
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endif # HAS_FLASH_LOAD_OFFSET |
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config TEXT_SECTION_OFFSET |
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hex |
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prompt "TEXT section offset" if !BOOTLOADER_MCUBOOT |
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default 0x200 if BOOTLOADER_MCUBOOT |
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default 0 |
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help |
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If the application is built for chain-loading by a bootloader this |
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variable is required to be set to value that leaves sufficient |
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space between the beginning of the image and the start of the .text |
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section to store an image header or any other metadata. |
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In the particular case of the MCUboot bootloader this reserves enough |
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space to store the image header, which should also meet vector table |
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alignment requirements on most ARM targets, although some targets |
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may require smaller or larger values. |
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config HAVE_CUSTOM_LINKER_SCRIPT |
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bool "Custom linker scripts provided" |
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help |
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Set this option if you have a custom linker script which needed to |
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be define in CUSTOM_LINKER_SCRIPT. |
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config CUSTOM_LINKER_SCRIPT |
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string "Path to custom linker script" |
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depends on HAVE_CUSTOM_LINKER_SCRIPT |
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help |
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Path to the linker script to be used instead of the one define by the |
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board. |
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The linker script must be based on a version provided by Zephyr since |
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the kernel can expect a certain layout/certain regions. |
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This is useful when an application needs to add sections into the |
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linker script and avoid having to change the script provided by |
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Zephyr. |
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config CUSTOM_RODATA_LD |
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bool "(DEPRECATED) Include custom-rodata.ld" |
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help |
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Note: This is deprecated, use Cmake function zephyr_linker_sources() instead. |
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Include a customized linker script fragment for inserting additional |
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data and linker directives into the rodata section. |
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config CUSTOM_RWDATA_LD |
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bool "(DEPRECATED) Include custom-rwdata.ld" |
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help |
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Note: This is deprecated, use Cmake function zephyr_linker_sources() instead. |
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Include a customized linker script fragment for inserting additional |
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data and linker directives into the data section. |
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config CUSTOM_SECTIONS_LD |
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bool "(DEPRECATED) Include custom-sections.ld" |
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help |
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Note: This is deprecated, use Cmake function zephyr_linker_sources() instead. |
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Include a customized linker script fragment for inserting additional |
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arbitrary sections. |
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config KERNEL_ENTRY |
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string "Kernel entry symbol" |
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default "__start" |
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help |
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Code entry symbol, to be set at linking phase. |
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config LINKER_SORT_BY_ALIGNMENT |
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bool "Sort input sections by alignment" |
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default y |
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help |
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This turns on the linker flag to sort sections by alignment |
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in decreasing size of symbols. This helps to minimize |
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padding between symbols. |
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endmenu |
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menu "Compiler Options" |
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config NATIVE_APPLICATION |
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bool "Build as a native host application" |
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help |
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Build as a native application that can run on the host and using |
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resources and libraries provided by the host. |
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choice |
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prompt "Optimization level" |
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default NO_OPTIMIZATIONS if COVERAGE |
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default DEBUG_OPTIMIZATIONS if DEBUG |
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default SIZE_OPTIMIZATIONS |
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help |
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Note that these flags shall only control the compiler |
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optimization level, and that no extra debug code shall be |
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conditionally compiled based on them. |
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config SIZE_OPTIMIZATIONS |
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bool "Optimize for size" |
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help |
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Compiler optimizations will be set to -Os independently of other |
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options. |
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config SPEED_OPTIMIZATIONS |
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bool "Optimize for speed" |
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help |
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Compiler optimizations will be set to -O2 independently of other |
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options. |
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config DEBUG_OPTIMIZATIONS |
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bool "Optimize debugging experience" |
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help |
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Compiler optimizations will be set to -Og independently of other |
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options. |
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config NO_OPTIMIZATIONS |
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bool "Optimize nothing" |
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help |
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Compiler optimizations will be set to -O0 independently of other |
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options. |
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endchoice |
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config COMPILER_OPT |
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string "Custom compiler options" |
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help |
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This option is a free-form string that is passed to the compiler |
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when building all parts of a project (i.e. kernel). |
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The compiler options specified by this string supplement the |
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predefined set of compiler supplied by the build system, |
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and can be used to change compiler optimization, warning and error |
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messages, and so on. |
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endmenu |
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choice |
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prompt "Error checking behavior for CHECK macro" |
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default RUNTIME_ERROR_CHECKS |
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config ASSERT_ON_ERRORS |
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bool "Assert on all errors" |
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help |
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Assert on errors covered with the CHECK macro. |
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config NO_RUNTIME_CHECKS |
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bool "No runtime error checks" |
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help |
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Do not do any runtime checks or asserts when using the CHECK macro. |
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config RUNTIME_ERROR_CHECKS |
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bool "Enable runtime error checks" |
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help |
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Always perform runtime checks covered with the CHECK macro. This |
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option is the default and the only option used during testing. |
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endchoice |
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menu "Build Options" |
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config KERNEL_BIN_NAME |
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string "The kernel binary name" |
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default "zephyr" |
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help |
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This option sets the name of the generated kernel binary. |
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config OUTPUT_STAT |
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bool "Create a statistics file" |
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default y |
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help |
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Create a stat file using readelf -e <elf> |
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config OUTPUT_DISASSEMBLY |
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bool "Create a disassembly file" |
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default y |
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help |
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Create an .lst file with the assembly listing of the firmware. |
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config OUTPUT_PRINT_MEMORY_USAGE |
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bool "Print memory usage to stdout" |
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default y |
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help |
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If the toolchain supports it, this option will pass |
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--print-memory-region to the linker when it is doing it's first |
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linker pass. Note that the memory regions are symbolic concepts |
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defined by the linker scripts and do not necessarily map |
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directly to the real physical address space. Take also note that |
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some platforms do two passes of the linker so the results do not |
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match exactly to the final elf file. See also rom_report, |
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ram_report and |
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https://sourceware.org/binutils/docs/ld/MEMORY.html |
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config BUILD_OUTPUT_HEX |
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bool "Build a binary in HEX format" |
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help |
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Build a binary in HEX format. This will build a zephyr.hex file need |
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by some platforms. |
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config BUILD_OUTPUT_BIN |
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bool "Build a binary in BIN format" |
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default y |
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help |
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Build a binary in BIN format. This will build a zephyr.bin file need |
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by some platforms. |
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config BUILD_OUTPUT_EXE |
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bool "Build a binary in ELF format with .exe extension" |
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help |
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Build a binary in ELF format that can run in the host system. This |
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will build a zephyr.exe file. |
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config BUILD_OUTPUT_S19 |
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bool "Build a binary in S19 format" |
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help |
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Build a binary in S19 format. This will build a zephyr.s19 file need |
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by some platforms. |
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config BUILD_NO_GAP_FILL |
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bool "Don't fill gaps in generated hex/bin/s19 files." |
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depends on BUILD_OUTPUT_HEX || BUILD_OUTPUT_BIN || BUILD_OUTPUT_S19 |
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config BUILD_OUTPUT_STRIPPED |
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bool "Build a stripped binary" |
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help |
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Build a stripped binary. This will build a zephyr.stripped file need |
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by some platforms. |
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config APPLICATION_DEFINED_SYSCALL |
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bool "Scan application folder for any syscall definition" |
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help |
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Scan additional folders inside application source folder |
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for application defined syscalls. |
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config MAKEFILE_EXPORTS |
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bool "Generate build metadata files named Makefile.exports" |
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help |
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Generates a file with build information that can be read by |
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third party Makefile-based build systems. |
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endmenu |
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endmenu |
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menu "Boot Options" |
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config IS_BOOTLOADER |
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bool "Act as a bootloader" |
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depends on XIP |
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depends on ARM |
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help |
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This option indicates that Zephyr will act as a bootloader to execute |
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a separate Zephyr image payload. |
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config BOOTLOADER_SRAM_SIZE |
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int "SRAM reserved for bootloader" |
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default 16 |
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depends on !XIP || IS_BOOTLOADER |
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depends on ARM || XTENSA |
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help |
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This option specifies the amount of SRAM (measure in kB) reserved for |
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a bootloader image, when either: |
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- the Zephyr image itself is to act as the bootloader, or |
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- Zephyr is a !XIP image, which implicitly assumes existence of a |
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bootloader that loads the Zephyr !XIP image onto SRAM. |
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config BOOTLOADER_MCUBOOT |
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bool "MCUboot bootloader support" |
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select USE_DT_CODE_PARTITION |
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help |
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This option signifies that the target uses MCUboot as a bootloader, |
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or in other words that the image is to be chain-loaded by MCUboot. |
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This sets several required build system and Device Tree options in |
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order for the image generated to be bootable using the MCUboot open |
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source bootloader. Currently this includes: |
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* Setting TEXT_SECTION_OFFSET to a default value that allows space |
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for the MCUboot image header |
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* Activating SW_VECTOR_RELAY on Cortex-M0 (or Armv8-M baseline) |
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targets with no built-in vector relocation mechanisms |
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* Including dts/common/mcuboot.overlay when building the Device |
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Tree in order to place and link the image at the slot0 offset |
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config BOOTLOADER_ESP_IDF |
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bool "ESP-IDF bootloader support" |
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depends on SOC_ESP32 |
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help |
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This option will trigger the compilation of the ESP-IDF bootloader |
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inside the build folder. |
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At flash time, the bootloader will be flashed with the zephyr image |
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config BOOTLOADER_KEXEC |
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bool "Boot using Linux kexec() system call" |
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depends on X86 |
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help |
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This option signifies that Linux boots the kernel using kexec system call |
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and utility. This method is used to boot the kernel over the network. |
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config BOOTLOADER_CONTEXT_RESTORE |
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bool "Boot loader has context restore support" |
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default y |
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depends on SYS_POWER_DEEP_SLEEP_STATES && BOOTLOADER_CONTEXT_RESTORE_SUPPORTED |
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help |
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This option signifies that the target has a bootloader |
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that restores CPU context upon resuming from deep sleep |
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power state. |
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config REBOOT |
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bool "Reboot functionality" |
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select SYSTEM_CLOCK_DISABLE |
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help |
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Enable the sys_reboot() API. Enabling this can drag in other subsystems |
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needed to perform a "safe" reboot (e.g. SYSTEM_CLOCK_DISABLE, to stop the |
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system clock before issuing a reset). |
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config MISRA_SANE |
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bool "MISRA standards compliance features" |
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help |
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Causes the source code to build in "MISRA" mode, which |
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disallows some otherwise-permitted features of the C |
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standard for safety reasons. Specifically variable length |
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arrays are not permitted (and gcc will enforce this). |
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endmenu |
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menu "Compatibility" |
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config COMPAT_INCLUDES |
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bool "Suppress warnings when using header shims" |
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default y |
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help |
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Suppress any warnings from the pre-processor when including |
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deprecated header files. |
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endmenu
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