If I’m not mistaken the Mynewt bootloader includes support for serial “DFU” (more like app image management and transfer). Are you planning to port that as well as part of the mcuboot project? The reason I ask is that there have been some conversations regarding the future protocol that will be used to provide DFU over the different transports (serial, USB, BLE, 15.4, etc) and it would be good to know if you have taken any sort of decision in this regard.
If I’m not mistaken the serial code in the Mynewt bootloader uses parts of what’s called the Newt management protocol currently, so it’d be interesting to know if you plan to incorporate that into the project.
Also could you confirm that the mcuboot image will only be able to be overwritten using debug pins? (i.e. no DFU, OTA or otherwise of the bootloader itself).