How to configure a custom MCUBoot in NCS v2.9.0

RE: How to configure a custom MCUBoot in NCS v2.9.0

Sigurd Hellesvik — Thu, 27 Feb 2025 15:03:36 GMT

I asked internally, and they say that you would the list(APPEND) method will not work with Sysbuild.

Instead, you can use west.yml to add your code, as explained in Workflow 3 or Workflow 4 in Adding your own code.

RE: How to configure a custom MCUBoot in NCS v2.9.0

Leo — Mon, 24 Feb 2025 12:14:08 GMT

It doesn't work, still compiling MCUBoot in NCS.

RE: How to configure a custom MCUBoot in NCS v2.9.0

Sigurd Hellesvik — Mon, 24 Feb 2025 11:24:23 GMT

Try to do that in sysbuild.cmake in newer versions. Does that work?

RE: How to configure a custom MCUBoot in NCS v2.9.0

Leo — Mon, 24 Feb 2025 01:05:56 GMT

In NCS 2.6.1, it's possible to directly specify using list(APPEND ZEPHYR_EXTRA_MODULES "${CMAKE_CURRENT_SOURCE_DIR}/bootloader/mcuboot"), but why doesn't it work in the new version?

RE: How to configure a custom MCUBoot in NCS v2.9.0

Sigurd Hellesvik — Fri, 21 Feb 2025 14:18:40 GMT

Hi,

MCUboot is tightly coupled with the nRF Connect SDK. Because of this, it is not trivial to add it as a custom sysbuild image.

If you want add custom features to MCUboot, I suggest that you fork MCUboot.
See Adding your own code.

Then use MCUboot as normal, with SB_CONFIG_BOOTLOADER_MCUBOOT=y

Regards,
Sigurd Hellesvik