MCUBOOT + settings storage + user storage

RE: MCUBOOT + settings storage + user storage

Elfving — Fri, 03 Feb 2023 09:30:29 GMT

Hello again,

In NCS when you enabled bootloader the partition manager is enabled, and it will override whatever is defined in DTS and specify it's own flash partition layout. You can do some tweaking in the options but in our applications we always define a static partition configuration (pm_static.yml). This way we don't depend on the algorithm to chose the layout for us (plus I have a guarantee the layout won't change between builds). Take a look here for partition layout for partition manager.

You can check build-folder/partitions.yml to see how it was sorted out in the end.

The easiest way to add a static pm file would be to simply take the partitions.yml in the build folder and copy it, rename it, and place it as a pm_static.yml in the project folder. See if that helps.

Regards,

Elfving

RE: MCUBOOT + settings storage + user storage

Elfving — Thu, 02 Feb 2023 14:23:00 GMT

Hi Mary,

I will have to get back to you on this.

Regards,

Elfving

RE: MCUBOOT + settings storage + user storage

Mary — Wed, 01 Feb 2023 20:43:00 GMT

I added this to

<sdk>/bootloader/mcuboot/boot/zephyr/pm.yml

# Added user storage 
user:
  address: 0xf5000
  end_address: 0xF8000
  placement:
    before:	[settings_storage]
  region: flash_primary
  size: 0x3000

This works, so far, but I'd rather not modify the SDK. Is there a way to add a partition at the application level?

Mary