subsys/retention/Kconfig.blinfo

# Copyright (c) 2023, Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0

menuconfig RETENTION_BOOTLOADER_INFO
	bool "Bootloader info"
	help
	  Adds a bootloader information sharing system which allows for
	  retreiving data from the bootloader when data sharing is enabled.

if RETENTION_BOOTLOADER_INFO

# Workaround for not being able to have commas in macro arguments
DT_CHOSEN_BOOTLOADER_INFO := zephyr,bootloader-info

config RETENTION_BOOTLOADER_INFO_TYPE_MCUBOOT
	bool "MCUboot"
	depends on !MCUBOOT && BOOTLOADER_MCUBOOT
	depends on $(dt_chosen_enabled,$(DT_CHOSEN_BOOTLOADER_INFO))
	select MCUBOOT_BOOTUTIL_LIB
	help
	  Adds a bootloader information sharing system for MCUboot and
	  applications which allows applications to read the configuration of
	  MCUboot and the running image. This can be used by applications so
	  that they know how to e.g. handle firmware updates and place them
	  into the correct slot.

	  In order to use this, a retention area must be created and set as
	  the "zephyr,bootloader-info" chosen node via device tree, MCUboot
	  must be built with the same "zephyr,bootloader-info" DTS node and
	  have CONFIG_BOOT_SHARE_DATA, CONFIG_BOOT_SHARE_DATA_BOOTINFO and
	  CONFIG_BOOT_SHARE_BACKEND_RETENTION enabled, or the shared
	  information will not be accessible.

config RETENTION_BOOTLOADER_INFO_INIT_PRIORITY
	int "Bootloader info init priority"
	default 87
	help
	  Bootloader info initialization priority (must be higher than init
	  priorities for for retention subsystem).

config RETENTION_BOOTLOADER_INFO_OUTPUT_FUNCTION
	bool "Function"
	default y
	help
	  Allows bootloader settings to be fetched by calling a function which
	  will update a buffer with the requested data.

config RETENTION_BOOTLOADER_INFO_OUTPUT_SETTINGS
	bool "Settings"
	depends on SETTINGS
	help
	  Allows bootloader settings to be fetched using settings with the
	  "blinfo" prefix.

endif