@mcbarlo, post #2
@MinisterQ, post #8
It has a hardware abstraction layer that makes it independent from the used PowerPC CPU (we already run on 603, 604, 750, and 74xx and some others), independent from the mainboard chipset, and independent from the board. Porting to another platform is a matter of two to four weeks for a single person.
@Goramo, post #13
@MDW, post #12
@mailman, post #19