Secured Firmware Only?

[mansen motors]

There's a few threads out there with similar questions, but I haven't seen a direct answer to this.

If I build with nrf5340dk_nrf5340_cpuapp, can I use the entire application space (1MB) for my program? I realize I'm not using the security features here, but they are so complicated to implement and we have no need for them with our application, however we will run out of space if we are limited to the 256kB of secured flash space.

It's really not clear from the documentation if the application space is fixed in this configuration or not. Also, we'll need to use a bootloader at some point, will this still be possible?

[SwRa]

Hi Colin,

The flash will be split into secure and non-secure only if the application is built as non-secure(nrf5340dk_nrf5340_cpuapp_ns).. If you build the application as  nrf5340dk_nrf5340_cpuapp, then the whole flash is secure.. 

Best Regards,

Swathy

[mansen motors]

Hi Swathy,

Thanks for the reply, I was able to read between the lines and came to that conclusion, but thank you for stating it clearly here. I'm sure it will help someone else down the road.

Colin