I have a Nokia N810 at hand (OMAP2 / ARMv6); while it's not quite what
Ubuntu and Nokia are targeting (9.04 and Maemo 5 targets ARMv7), it'll
be interesting to see how well Fedora runs on it. I'd have to get a
larger SDHC card, read up on how to boot the device from it (as far as
I remember, not that troublesome), and work out what binary blobs are
Ubuntu is actually building 9.04 with: "-march=armv5t
-mtune=cortex-a8" (1) so it would work on your Nokia N810 (just not
Nokia was sponsoring a project called Mojo-Handhelds (2) that did do
an optimized 'armv6' version of Ubuntu 8.04, however their future is
in question at the moment.
Having a real ARMv7 device would be much better, though. Does Nokia
provide those to developers, and would they lend development boards
(even remote access would be better than nothing) for non-Maemo use?
Have you taken a look at the TI's beagleboard? 5xxMhz ARMv7 cortex-a8?
(3) Add a usb harddrive and usb ethernet adapter and they work great
I currently have one setup running 24/7 with ssh access available to
developers, it's currently building native kernels (beagleboard,
omap-3evm, etc) for all the debian variants i work with (debian, mojo,
ubuntu) each in a separate chroot.
I'm in the process* of adding fedora chroot's, (with an end goal of
attempting to build an armv7 variant using the koji build system).
* rootfilesystem runs native on the beagle, now just to make the chroot work...