Hi, I work on a project that required a sector in flash to store some information hence I changed the partition in the pm_static.yml file and the dts file (although I guess this has no effect when using MCUboot). The problems I have encountered is the following: Flashing a firmware (A) that uses the new partition, it is not possible to downgrade to a firmware (B) using the old partition. The downgrade is succesful but the system reboots after a few seconds and reverts the image back to (A). Flashing a firmware (B) that uses the old partition, it is possible to upgrade and stay on a firmware (A) that uses the new partition. Doing another upgrade to a firmware (C) that uses the same "new" partition reverts the image back to firmware (A). I'm calling boot_write_img_confirmed at startup and has not seen any firmware reverts before changing the partition.

Mcuboot reboots back to old image

Hi,

I work on a project that required a sector in flash to store some information hence I changed the partition in the pm_static.yml file and the dts file (although I guess this has no effect when using MCUboot).

The problems I have encountered is the following:

Flashing a firmware (A) that uses the new partition, it is not possible to downgrade to a firmware (B) using the old partition. The downgrade is succesful but the system reboots after a few seconds and reverts the image back to (A).
Flashing a firmware (B) that uses the old partition, it is possible to upgrade and stay on a firmware (A) that uses the new partition. Doing another upgrade to a firmware (C) that uses the same "new" partition reverts the image back to firmware (A).

I'm calling boot_write_img_confirmed at startup and has not seen any firmware reverts before changing the partition.

0 user98857 over 3 years ago

settings_storage:
  address: 0xfa000
  size: 0x3000
  end_address: 0xfd000
  placement:
    before:
    - user_storage
  region: flash_primary
user_storage:
  address: 0xfd000
  size: 0x3000
  end_address: 0x100000
  placement:
    before:
    - end
  region: flash_primary

Old static file

0 user98857 over 3 years ago

settings_storage:
  address: 0xf9000
  size: 0x3000
  end_address: 0xfc000
  placement:
    before:
    - uptime_storage
  region: flash_primary
uptime_storage:
  address: 0xfc000
  size: 0x1000
  end_address: 0xfd000
  placement:
    before:
    - user_storage
  region: flash_primary
user_storage:
  address: 0xfd000
  size: 0x3000
  end_address: 0x100000
  placement:
    before:
    - end
  region: flash_primary

New static file