Linux/PPC snapshots and patches against Linus' trees are available from:
ftp://ftp.fsmlabs.com/pub/linuxppc/
ftp://ftp.kernel.org/pub/linux/kernel/people/cort and its mirrors
I'll be keeping the 2.2 and 2.4 snapshots and patches up-to-date on both
sites. Please use the kernel.org (and mirror) sites first.