[U-Boot] How to implement starting logo?

Hi, I want to display a starting logo on LCD when my custome board power up, so what shoud I do to achieve this purpose? The U-Boot version is 1.1.1, the processor is AT91RM9200, and the display controller is SAMSUNG S1D13506. should I implement framebuffer driver for the display controller? Or Just simply add "SPLASH SCREEN" support according to instruction of the U-Boot document "README". Best regards, Lizhihao