[U-Boot-Users] U boot scripting / stand alone program capabilities

Dear U boot users,

I've read the DULG manual about the U boot scripting capabilities and successfully run the hello_world.srec example, but now i want to replace the hello world program with one of my own programs. How can I compile my own program ? No info is available in the manuals I've read. I've already tried with the Makefile that's included with the examples and set ARCH to ppc and TOPDIR to ../u-boot/ (for config.mk) but that fails.

(I am using the MPC5200 Lite - Icecube)

Any pointers are welcome..