Arndale Octa uboot like application

Hi Linaro,

Using Arndale Octa board from samsung ,Iam trying to develop a uboot like application which will be run on top of bl2 (SPL). I create my own function(board_init_f()) for basic initialization (taking reference from uboot),which includes UART configuration.After compiling my code I am not getting any data over UART. When I replace u-boot.bin with my_app.bin it doesn't work. But When I called my_app from u-boot.bin it works fine.

I am trying to load my_app.bin from SPL then it doesn't work What could be the problem? Please suggest if I am missing anything.

Thanks, Devarsh