[fedora-arm] How to get started?

Hi there, I've offered to help with the OLPC ARM port for OLPC 1.75. Obviously this hardware doesn't exist yet, so I have a few questions. I've just installed x64 F13 and got a Fedora account. 1. How is the best way to get started? 2. Should I get a cross-compiler going, and pick a package to port? Obviously, I'd prefer to work on the packages that OLPC 1.75 will need, but am happy to work on anything you need. 3. How can I test the resulting RPM? 4. I'm going to be in the US next week for OSCON. I will try to pick up a Beagle Board or GuruPlug, but it seems like supply is severely constrained for any / all of the suitable ARM boards. As the OLPC 1.75 and XO-3 will use Marvell parts, will ARM-A8 boards be a suitable target, or should I go with a Marvell based device? I have long lost experience with kernel programming (porting Reiserfs and other ports to Alpha back in 2000 or so, when LP big endian 64 bit was very rare), X11 drivers (Matrox cards) for XFree86 back in the 1990's and pnm2ppa - a printer driver for HP's worst ever printers. thanks, Andrew p.s. I have three XO-1's, but obviously these are not that useful for this effort unless parity is achieved for the OS with the 1.75.