[U-Boot] How to change splash screen in u-boot

Hi all.

I'd like to substitute freescale logo inside u-boot code with another one. I refer to "board/freescale/common/fsl_logo_bmp.c".

Anyway I know there's something usable inside tool/ directory like bmp_logo that convert a bmp image into a structured C file and like easylogo/ directory.

Do you have some suggestions?

Thnaks @s