[U-Boot-Users] mapping flash memory

I have a new board based on s3c2410a. I have mounted 2 banks of samsung ram k4s283233f and 1 bank of flash memory k9f2808uoc samsung. total size of ram is 256Mbit organized in two bank (128Mbitx2). Total flash is 128Mbit. I need a help to configure the u-boot. How and what i can cange in the original file of u-boot version 1.1.4 to setting flash memory and 2 banks of ram?I think modify the boot for smdk2410 and porting this to my board, what do you think about?you now another way ?

thanks Marco