This dmesg is from a 2.6.25 kernel which works fine. I can gather other 
debugging info from the booting kernels if needed. But its a challenge 
to debug the bad kernel being efifb is initialized very late (so you 
never even get to the video initialization and cant see any logged 
messages) and since its a MacBook I dont have a real serial port for 
serial console. The efi map is for MacBook has a different layout from 
other EFI systems I have to test on. 2.6.29 kernel works on every EFI 
system I have except MacBook.

Brian