There is a working patch for the Sharp development board, KEV7A400 available here. It's a little too large to make the 40KB limit. <ftp://ftp.buici.com/pub/u-boot/u-boot-0.4.5-1.diff.gz> There is also a binary for those who would like to test it. <ftp://ftp.buici.com/pub/u-boot/u-boot-0.4.5-kev7a400.bin> Cheers.