I'm one of the devs from the Gentoo Pandora project: http://gentoo.openpandora.org and have ported a bootable base image for the Beagleboard and OpenPandora for the armv7-a cortex-a8 core.

It appears since there are a few more devices out there that are using the same core that it should be able to ...

There is a project underway to get Gentoo on the pandora, still alpha since the pandora is not even out yet. https://launchpad.net/gentoo-arm-pandora