Suggestion on USB Keyboard


I am tring to bring up usb keyboard on u-boot. I have seen some were that the keyboard works on kernel… Can any one suggest or send me the link for working stack. so that by taking reference from,i would write the code for u-boot… USB HUB is up on u-boot but unable to find a clue to run keyboard … (Board xM- rev B). Able to find details of any USB hardware connected on board…

Thanks & Regards
Atul Kumar