Code Listing 5: yaboot.conf for PReP hardware lists kernel as image=/boot/vmlinux but earler in the docs it's listed as "kernel-$version" when you manually should copy it to boot.. a slight inconsistency. Reproducible: Always Steps to Reproduce: 1. 2. 3.
Code Listing 5 at given URL is "Invoking menuconfig". Can't find "image=/boot/vmlinux" in the PPC docs. I guessed it's been fixed. Please reopen if not.