Hello,
I am currently in the process of getting familiar with the security features of the LPC55S16 Cortex-M33. At the moment I am focussing on Secure Boot.
I have worked through AN12283 and also read through the online documentation about the SPSDK.
I think I managed to get secure boot running and the behavior is as expected: When writing an image that was signed with blhost to the memory, the microcontroller runs normally. As soon as I write an unsigned image with blhost to the memory nothing happens.
My question would now be the following: I am looking for a way to get a "image verification failed" message of something printed to the terminal or to a debugger. I.e. is there a way to debug the boot process/bootloader or an -v (verbose) option for it? I somehow need to verify that what I expect is happening here is indeed really the case.
Of course I cant use a normal debugger like Segger Ozone when secure boot is enabled, so this option won't work.
Any suggestion or hint is appreaciated.
Thanks in advance!
