[U-Boot] problem on SPL build

Hi,

I'am studying on u-boot, and i am trying to port it on smdkc100. I setup cross-compile on ubuntu12.04 and build the u-boot, it works okay. But i have a problem on SPL build.

I hope you can help me to solve it, thanks!

problem:

insert file "smdkc100.h" at Line 25 #define CONFIG_SPL and then make distclean make smdkc100_config make all but get error: /u-boot-2014.01/arch/arm/lib/crt0.S:74: undefined reference to `board_init_f'