How to use custom mcuboot?

[yang.hu]

Hi,

Because I wanted to add custom features to mcuboot, I had to use custom mcuboot.

I also used sysbuild for multi-image building.

The documentation tells me that I might need the ExternalZephyrProject_Add() function, but so far it hasn't worked.

One reason is that the application name is duplicate, and I also used mcuboot.

After further analysis, I realized that it would be nice if I could change the ZEPHYR_MCUBOOT_MODULE_DIR value directly,

but I tried to change it in the CMakeList.txt file without success.

Anyway, my goal is the same, how do I add a custom mucboot?

SDK: NCS v2.6.1

BR,

Yang

[Menon]

Hello,

To include a custom MCUboot, you can create a fork of MCUboot and add your changes to it. After making the changes, you can replace the reference to the MCUboot repo in West with your forked version. This way, when you build your project, it will use your custom MCUboot instead of the standard one.

Take a look at this old devzone ticket, which discusses something very similar.

Kind Regards,

Abhijith

[yang.hu]

Hi Abhijith,

Thank you for your reply.

This obviously changes the SDK, is there a way to do it without changing the SDK?

For example, use sysbuild to add an associated image.

BR,

Yang 

[Menon]

Hello,

yang.hu said:

This obviously changes the SDK, is there a way to do it without changing the SDK?

For example, use sysbuild to add an associated image.

Sorry I didn't mention the sys build as it is still in the development stage and will be officially supported soon (maybe with NCS 2.7), but I don't know when or don't have a timeline to share with you.

Kind Regards,

Abhijith