I was using netconsole to catch the uBoot startup, but now I have a serial cable. My setup is below. It works, but it redirects all output to netconsole. Is there anyway for uBoot to output both to serial and netconsole?
preboot=run if_netconsole start_netconsole
if_netconsole=ping $serverip
start_netconsole=setenv ncip $serverip; setenv bootdelay 10; setenv stdin nc; setenv stdout nc; setenv stderr nc; version;
And if anyone is interested, you can use Windows to access the serial port. I'm using a CA-42 cable which is based of the Prolific PL-2302 chip. I found the Windows driver is at the link below. I'm using Putty. You just need to use the COM port and set the speed to 115200.
http://www.prolific.com.tw/eng/downloads.asp?id=31