Fiasco.OC/L4Re supports the beagleboard out of the box now, at least the older versions. I'm not sure about the XM, I hope it's not completely different to the previous ones. Adam

That is good news. The xM uses DM3730 main chip, which is supposedly "compatible with OMAP-3 architecture." Both chips built around cortex-A8 core, so hopefully all will be well. Brett.