[U-Boot] Data transfer through Ethernet in u-boot.

Hi all, I am porting u-boot on PPC440 EP. I am porting a stand alone application on it. I have coded for testing the peripherals of PPC. I have no issues in executing this application. Similarly I want to test ethernet communication also. I would like to transmit a text file from my board to PC and vice-versa. Are there any example application for this in u-boot. Please help me in this regard.

Thanks & Regards, Prathika R