NRF9160 increase mcuboot secondary slot

RE: NRF9160 increase mcuboot secondary slot

Hakon — Mon, 13 May 2024 10:34:50 GMT

[quote user="haraujo"]Is it possible to extend the secondary slot partition on NRF9160 without interfering with SAU/SPU/TrustZone?[/quote]

You can try, the worst thing I can think of that can happen is the partition manager will give an error. Also, you can check how to optimize partition size here.

RE: NRF9160 increase mcuboot secondary slot

haraujo — Tue, 07 May 2024 09:40:03 GMT

Hi Hakon,

Thank you for the reply. What if we've already made all possible memory optimizations and want to make use of the maximum capacity of nrf52840 flash? Is there a way to safely partition NRF9160 in order to match nrf52840's max size partitions?

We tried partitioning NRF9160 secondary's slot to a maximum size of 0x78000 bytes (same as NRF52840). But still something didn't work. We believe that there may have been a fault due to SAU/TrustZone.

In other words, I shall ask: Is it possible to extend the secondary slot partition on NRF9160 without interfering with SAU/SPU/TrustZone?

Thanks!

RE: NRF9160 increase mcuboot secondary slot

Hakon — Tue, 07 May 2024 07:51:12 GMT

Hello,

you can try to reduce the application memory footprint, as explained here. This will hopefully free up some memory.