[U-Boot] NAND and new board

[David Kaplan]

I'm trying to add config for a new board (custom board with s3c2410). I am
confused about how to define NAND mem.
The chip in question is a Samsung K9F5608U0D (32M NAND).

I have noticed various nand.c files in board/*. Are any of those good enough
for me (and I can add to my board) or do I need to build my own? If I need
to do it myself, would anyone be able to provide a few pointers?