Forum Discussion
TruHy
New Contributor
4 years agoSerial messages from MPL and U-Boot by default are output to the UART-USB connector (the connector next to the ethernet socket), not from JTAG USB, and you need to run a serial console tool, e.g. PuTTY (https://www.putty.org/).
I also noticed that your output is reversed, i.e. it starts execution with U-Boot, but MPL needs to execute first, which then reads the payload (U-Boot) bytes from flash memory and checks the signature. If correct then it will load it into RAM and jump to it.