Read protection in BOOTCONF in nRF54L15

[Emil Lenngren]

In https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/uicr.html#register.BOOTCONF, I can seee that it is possible to apply Read protection to the first x kB of the RRAM by setting the READ field to NotAllowed. But what would be the use case for this? Doesn't the CPU read from the first two words at reset, to know what program counter and stack pointer to use? So if this is not allowed by the CPU, doesn't that mean the CPU would always fail to boot?

[Simonr]

Hi Emil

Our bootloader (NSIB) doesn't use BOOTCONF, but rather RRAMC directly via the fprotect API. A pull request for generating BOOTCONF contents to a hex file and merge it can be found  here: https://github.com/nrfconnect/sdk-nrf/pull/20746 

It does indeed seem like the READ value is not really usable from what I can tell.

Best regards,

Simon