These ebuilds come from http://git.overlays.gentoo.org/gitweb/?p=user/smithdanea.git;a=summary.
If you have some problems, go to the official site first.
gnu-efi : Library for build EFI Applications ( http://developer.intel.com/technology/efi )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a smithdanea
For Paludis use this rsync : rsync://gentoo.zugaina.org/smithdanea-portage
If you have a problem : ycarus(-at-)zugaina.org