[U-Boot] MPC8xxx ethernet not up

Hi

I am trying to boot a MPC8XXX based board using uboot version 1.1.3. I am able to get the serial console up. But when I try to ping it gives me a time out error. On trying "mii info" and enabling debug messages I see that all the mii read messages are returning 0xffff. Could any one please suggest me steps to debug.

Thanks & Regards Saugat.