There are 1 repository under powermac topic.
Slimline Open Firware - an implementation of IEEE1275 Open Firmware for some POWER ISA systems. This fork has patches to fix the build for QEMU with PPC 970 (G5). The SLOF binary supplied with QEMU crashes on G5 CPUs (real or emulated) with pseries-2.6 and higher (xHCI driver and other issues). When I compile for "ppc970", it works.
Jake Hamby's fork of the Void Linux PPC source package repo with my own patches for older PowerPC systems that I hope to upstream.