MCUBoot "reading sectors failed" problem with nrf-sdk v1.6.0

[n.marty]

Hi all

We are switching to nrf-sdk v1.6.0 in our project and encountered a problem with MCUBoot.

The image builds successfully and can be flashed successfully as well. MCUBoot loads but is then unable to find a bootable image. There's a message which says:

W: Failed reading sectors; BOOT_MAX_IMG_SECTORS=128 - too small?

I tried increasing BOOT_MAX_IMG_SECTORS up to 91216. But there's still the same error message. I can't increase it more otherwise it overlaps SRAM region. I think the problem is somewhere else but I don't know where. Can someone give me a hint where to look for the problem?

I read that BOOT_MAX_IMG_SECTORS configuration is important for swapping the image in the secondary slot to the primary slot after an update.
I thought as a workaround I could configure MCUBoot to work in XIP Mode "execute in place", which does not need swapping and thus my initial problems disappears. Does anyone have a recommendation if it is a good idea to use XIP?

best regards

[Albrecht Markus Schellenberger]

Thanks for your feedback, Nicolas!

I will be on vacation for the next couple of weeks. If you need more support concerning this issue, I recommend you creating a new case referring to this one. One of my colleagues will help you then.

Thanks and regards,

Markus