Linux for 601-based PPC Macs?

jTepp... asks: "The company I work for is upgrading the majority of our systems, and migrating to Linux for most of the machines. I have a lab full of early PPC Macs that I now have been told to Migrate to Linux if possible, or scrap the entire room and start over. Since this would come directly out of my IT budget, and I need to use it for other projects, I'd rather keep the machines. The catch is that most of these units are powered by 601 chips, for which I'm having a difficult time finding a flavor of Linux that will support. I see support for older chips, and newer chips, but not the 601. Anyone know why? Or where I can find support?"