How to configure more flash space for App on Thingy91

[Anthony Corriveau]

On the Thingy 91, the default configuration allocates a lot of flash space to several mcuboot partitions, leaving only 380kb for the app. 

I need more space for the app, so is there a way to reduce the amount needed by mcuboot?

I am only creating a demo, so I don't need a secure boot loader, and could make do with no boot loader at all if necessary.

I have tried disabling the MCU boot in the proj.conf but the default seems to override this.

What it is the proper way to do this?

[Hakon]

Hello,

I have tried disabling the MCU boot in the proj.conf but the default seems to override this.

What it is the proper way to do this?

I'm not sure if there is a "proper" way to do this, but you try setting this config to CONFIG_BOOTLOADER_MCUBOOT=n.

[Anthony Corriveau]

I tried that. It has no effect.

It looks like the partitions are hard coded in the pm_static.yml file under: /nrf/boards/arm/thingy91_nrf9160/

In the CMakeList.txt file this is set:

set(PM_STATIC_YML_FILE ${CMAKE_CURRENT_LIST_DIR}/pm_static.yml CACHE INTERNAL "")

I tried overriding the PM_STATIC variable to no effect as well.

I suppose I could hack these files in the NRF source, but I wanted to see if there was a "proper" way to do this using the dynamic PM partitioning. 

[Hakon]

Are you building asset_tracker_v2? In that case, you need to remove the local kconfig as well. Just remove the four lines under the "MCUBOOT" comment.