nuttx-apps/boot/mcuboot/Kconfig

#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#

menuconfig BOOT_MCUBOOT
	bool "MCUboot"
	default n
	select BCH
	---help---
		Enable support for the MCUboot bootloader.

if BOOT_MCUBOOT

config MCUBOOT_VERSION
	string "MCUboot version"
	default "bb927ac014787992f2d8b42c7bd5d05eb4c17e05"

config MCUBOOT_ENABLE_LOGGING
	bool "Enable MCUboot logging"
	default n
	---help---
		Enable MCUboot's logging infrastructure.

choice
	prompt "Cryptographic backend"
	default MCUBOOT_USE_TINYCRYPT

config MCUBOOT_USE_MBED_TLS
	bool "Mbed TLS"
	depends on CRYPTO_MBEDTLS

config MCUBOOT_USE_TINYCRYPT
	bool "TinyCrypt"

endchoice # Cryptographic backend

config MCUBOOT_BOOTLOADER
	bool "MCUboot bootloader application"
	default n
	select BOARDCTL
	select BOARDCTL_BOOT_IMAGE
	---help---
		MCUboot bootloader application.

config MCUBOOT_BOOTSTRAP
	bool "Bootstrap erased the primary slot from the secondary slot"
	depends on MCUBOOT_BOOTLOADER
	default n
	---help---
		Enable bootstrapping support. Bootstrapping allows an erased primary slot
		to be initialized from a valid image in the secondary slot.

choice
	prompt "Upgrade mode"
	default MCUBOOT_SWAP
	---help---
		The default is to support A/B image swapping with rollback.  Other
		modes with simpler code path, which only supports overwriting the
		existing image with the update image or running the newest image
		directly from its flash partition, are also available.

config MCUBOOT_SWAP
	bool "A/B image swapping with rollback"

config MCUBOOT_OVERWRITE_ONLY
	bool "Overwrite the existing image with the update image"

config MCUBOOT_DIRECT_XIP
	bool "Run the newest image directly from its flash partition"

config MCUBOOT_RAM_LOAD
	bool "Loaded the image into RAM instead of run directly from flash"

endchoice # Upgrade mode

choice
	prompt "Swap upgrade policy"
	depends on MCUBOOT_SWAP
	default MCUBOOT_SWAP_USING_SCRATCH

config MCUBOOT_SWAP_USING_SCRATCH
	bool "Image swap using scratch area"

config MCUBOOT_SWAP_USING_MOVE
	bool "Image swap without using scratch area"

endchoice # Swap upgrade policy

config MCUBOOT_OVERWRITE_ONLY_FAST
	bool "Enable faster copy for overwrite only upgrade"
	depends on MCUBOOT_OVERWRITE_ONLY
	default n
	---help---
		Only erase and overwrite those primary slot sectors needed
		to install the new image, rather than the entire image slot.

config MCUBOOT_DIRECT_XIP_REVERT
	bool "Enable the revert mechanism in direct-xip mode"
	depends on MCUBOOT_DIRECT_XIP
	default n

config MCUBOOT_WATCHDOG
	bool "Watchdog feeding support"
	default n
	depends on WATCHDOG
	---help---
		This config must be selected in case the Watchdog is enabled while
		performing a swap upgrade and the time it takes for a swapping is long
		enough to cause an unwanted reset.

config MCUBOOT_WATCHDOG_DEVPATH
	string "Watchdog device path"
	default "/dev/watchdog0"
	depends on MCUBOOT_WATCHDOG
	---help---
		The path to the watchdog device.
		Default: /dev/watchdog0

config MCUBOOT_PRIMARY_SLOT_PATH
	string "Application firmware image primary slot path"
	default "/dev/ota0"
	---help---
		The path to the application firmware image primary slot character
		device driver.
		Default: /dev/ota0

config MCUBOOT_SECONDARY_SLOT_PATH
	string "Application firmware image secondary slot path"
	default "/dev/ota1"
	---help---
		The path to the application firmware image secondary slot character
		device driver.
		Default: /dev/ota1

config MCUBOOT_SCRATCH_PATH
	string "Scratch partition path"
	default "/dev/otascratch"
	---help---
		The path to the scratch partition character device driver.
		Default: /dev/otascratch

config MCUBOOT_DEFAULT_FLASH_ERASE_STATE
	hex "Default flash erase state"
	default 0xff
	---help---
		MCUboot will attempt to retrieve this value from the underlying MTD
		driver.
		In case of failure, the value from this config will be used as a
		fallback.

endif # BOOT_MCUBOOT