Hi,
I still try to configure Nordic-Zepyr build for a nrf5340, with a BLE stack and MCUBoot as the bootloader. The application will receive image updates over MQTT and store them in external flash memory.
According to your documentation (https://docs.nordicsemi.com/bundle/ncs-latest/page/mcuboot/design.html), MCUBOOT_SWAP_USING_MOVE seems to be the state of the art algorithm for MCUBoot to install new images. I was able to get that up and running. Next step now, is to let the newly installed firmware confirm the installation, so that the bootloader will not rollback the installation with the next reset.
It looks like the necessary modifications of the image headers or trailers are implemented in `boot_write_img_confirmed()` to confirm the new image.
How do I have to configure my application, so that I can use this library function? The `normal` CMake way seems to be straight forward and I would just have to add the bootutil library (defined in mcuboot/boot/bootutil/CMakeLists.txt) to my application target. With Zephyr, mcuboot/boot/bootutil/zephyr/CMakeLists.txt seems to apply here and it looks like I should add CONFIG_MCUBOOT_BOOTUTIL_LIB=y to my application configuration.
According to Kconfig.mcuboot:
menuconfig MCUBOOT_BOOTUTIL_LIB
bool "MCUboot utility library"
help
Enable MCUboot utility library which implements functions
required by the chain-loaded application and the MCUboot.
But, that does results in build error (complaining about CONFIG_BOOT_SWAP_USING_MOVE being not set), when compiling `bootloader/mcuboot/boot/bootutil/src/bootutil_public.c`:
In file included from /Users/todi/bloomlife/zephyr-workspace/bootloader/mcuboot/boot/bootutil/zephyr/../../zephyr/include/sysflash/pm_sysflash.h:13,
from /Users/todi/bloomlife/zephyr-workspace/bootloader/mcuboot/boot/bootutil/zephyr/../../zephyr/include/sysflash/sysflash.h:10,
from /Users/todi/bloomlife/zephyr-workspace/bootloader/mcuboot/boot/bootutil/src/bootutil_public.c:43:
/Users/todi/bloomlife/zephyr-workspace/bootloader/mcuboot/boot/bootutil/zephyr/../../zephyr/include/mcuboot_config/mcuboot_config.h:75:2: error: #error "CONFIG_BOOT_SWAP_USING_MOVE not set"
75 | #error "CONFIG_BOOT_SWAP_USING_MOVE not set"
| ^~~~~
Or, when I explicitly set CONFIG_BOOT_SWAP_USING_MOVE, an error is issued during the configuration phase of the build, complaining about the unknown BOOT_SWAP_USING_MOVE configuration option:
/Users/todi/bloomlife/zephyr-workspace/lovelace-pod-firmware/prj.conf:82: warning: attempt to assign the value 'y' to the undefined symbol BOOT_SWAP_USING_MOVE
Parsing /Users/todi/bloomlife/zephyr-workspace/zephyr/Kconfig
Loaded configuration '/Users/todi/bloomlife/zephyr-workspace/zephyr/boards/nordic/nrf5340dk/nrf5340dk_nrf5340_cpuapp_defconfig'
Merged configuration '/Users/todi/bloomlife/zephyr-workspace/lovelace-pod-firmware/prj.conf'
Merged configuration '/Users/todi/bloomlife/zephyr-workspace/lovelace-pod-firmware/build/lovelace-pod-firmware/zephyr/.config.sysbuild'
error: Aborting due to Kconfig warnings
CMake Error at /Users/todi/bloomlife/zephyr-workspace/zephyr/cmake/modules/kconfig.cmake:395 (message):
command failed with return code: 1
Call Stack (most recent call first):
/Users/todi/bloomlife/zephyr-workspace/nrf/cmake/modules/kconfig.cmake:29 (include)
/Users/todi/bloomlife/zephyr-workspace/zephyr/cmake/modules/zephyr_default.cmake:132 (include)
/Users/todi/bloomlife/zephyr-workspace/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include)
/Users/todi/bloomlife/zephyr-workspace/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:92 (include_boilerplate)
CMakeLists.txt:29 (find_package)
-- Configuring incomplete, errors occurred!
This is the relevant part of the prj.config file:
CONFIG_MCUBOOT_BOOTUTIL_LIB=y CONFIG_BOOT_SWAP_USING_MOVE=y
When I try to instead add `SB_CONFIG_BOOT_SWAP_USING_MOVE=y` to sysbuild.conf, I get the very same error.
/Users/todi/bloomlife/zephyr-workspace/lovelace-pod-firmware/sysbuild.conf:22: warning: attempt to assign the value 'y' to the undefined symbol BOOT_SWAP_USING_MOVE Parsing /Users/todi/bloomlife/zephyr-workspace/zephyr/share/sysbuild/Kconfig Loaded configuration '/Users/todi/bloomlife/zephyr-workspace/lovelace-pod-firmware/build/_sysbuild/empty.conf' Merged configuration '/Users/todi/bloomlife/zephyr-workspace/lovelace-pod-firmware/sysbuild.conf' error: Aborting due to Kconfig warnings
What do I have to do, to use that library?
best regards and thanks in advance,
Torsten
Nordic SDK version used: v2.7.99-cs2
