Default : UART0 as serial boot console.
How to make UART1 as serial boot console and see the bootup messages of the Hi-Five
Unleashed Board.
One uart is for jtag and one uart is for the serial console. You can’t switch them. Which uart is uart0 depends on the system you are trying to connect with. If you connect one uart and don’t see the serial console, then try connecting to the other one. If you are using a linux machine to connect, then try both /dev/ttyUSB0 and /dev/ttyUSB1.
Default Serial console is UART0 its available as /dev/ttySIF0 ,and UART1 as /dev/ttySIF1,
its for j-tag debug, we cant change serial console and serial d-bugger.