MCU boot platforms (like Musca-A) images are singed as a part of the mcuboot build. For the platforms that do not use TFM's MCU boot (e.g. PSoC64), the images have to be signed manually.
Some time ago we had a discussion on adding hooks for running a custom post-build scripts (https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/2588). Can we consider adding this now with the new build system introduction?
thanks

Hi Ken,
yes, we are using UART in core to print some info like protection status and boot progress.
For the hw initialization, SystemInit called from startup code is not sufficient enough as it cannot pass status and data to the rest of the platform code written in C. This was the main reason for adding post init function.