"I tried a more complex code that uses a periodic interval timer to do a delay on flash LED code however this code does not work, It comes back to U-Boot shell with return value of 1. What can I be doing wrong?" -- to answer my own questions, the page http://www.denx.de/wiki/view/DULG/MyStandaloneProgramDoesNotWork did help because I was not going to the right entry point :-)

Thank you all :-) :-)