Hi everyone,

I would like to inform you about that the default bootloader option in TF-M has been changed from TF-M’s MCUBoot fork to the original MCUBoot
by a commit that was merged a few hours ago (https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/4551).

Due to this you may experience that your TF-M builds are failing after a recent rebase onto master with the following error message:
"Missing MCUBoot. Please clone the MCUBoot repo to directory…..” . To solve this, you can choose from the following options:
    1. Follow the instructions of the ‘MCUBoot’ section in the docs/getting_started/tfm_secure_boot.rst to clone the MCUBoot repository
        and fulfill this dependency.

    2. Quick but rather temporary solution: Append ‘-DMCUBOOT_REPO=TF-M’ to your CMake configuration command to use the MCUBoot fork
        from the TF-M repository as before. Example:
cmake -G"Unix Makefiles"  -DTARGET_PLATFORM=AN521 -DCOMPILER=ARMCLANG -DMCUBOOT_REPO=UPSTREAM ../

Please let me know, if you have any difficulties.

Best regards,
David Vincze