I am starting a project that will use MQX for both the A5 and M4 cores. I want to wring out the bootup procedure using the tower board (because of more code examples) then switch to an Emcraft SOM. The end goal is to boot from x8 NAND flash because that is what the Emcraft SOM supports. I'm looking for a simple bootloader that will support programming NAND flash, most likely from an SD card. I know u-boot will do this, but seems like overkill. What else is out there? I'm using IAR IDE, is there any direct way to program the NAND flash from IAR?