u-boot-tools : utilities for working with Das U-Boot ( http://www.denx.de/wiki/U-Boot/WebHome )
urjtag : Tool for communicating over JTAG with flash chips, CPUs, and many more ( http://urjtag.sourceforge.net/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a KBrown-pub
For Paludis use this rsync : rsync://gentoo.zugaina.org/KBrown-pub-portage
If you have a problem : ycarus(-at-)zugaina.org