I'm having trouble getting u-boot to boot on my i.MX53 QSB. I have followed the directions for flashing the u-boot to the microSD card in the i.MX53 START Linux BSP User Guide, but when I power up the board i get nothing on the serial terminal. The lights are blue like they are suppose to be when powered on, but I don't get anything on serial (i've configured my serial as 115200,8-N-1). I'm at a complete loss for what I need to do to get u-boot to boot. Do I have to do anything else special to the microSD card or flash procedure? I'm using uboot-2011.06 compiled with buildroot if that helps. Thanks in advance.