grub2 and fat efi files on latest Apples

[James Jarvis <James.Jarvis@ed.ac.uk>]

Newbie post but hopefully I will be providing some useful data rather 
than merely questions...

I have been using the svn trunk over the last few days with some success 
compiling 32 and 64 bit EFI grub and creating a dual architecture 
grub.efi from the results that seems to work on hard disk on newer and 
older Apple Intel Macs. I use the fatglue.py python script from refit to 
make the fat grub.efi. Not sure if anyone else is doing anything similar...

I have observed that fat modules don't work - need to use grub-mkimage 
to insert all the required modules.

Another interesting observation (not really grub but maybe worth 
comment) is that using a Linux 2.6.29.2 kernel and initrd on the newer 
macs in efi mode boot (uses framebuffer console) works up until the 
insertion of modules. It appears that some modules do insert and other 
don't. The same kernel and initrd booted in "legacy mode" (after a call 
to fakebios) boots fine.

Finally, the reboot call from linux on the iMac 9,1 hangs - possibly an 
issue with fakebios??? If the output of grub-dumpbios is any use let me 
know...

Models tested (all intel)

macmini
iMac 4,1 requires ia32 or "fat"  grub.efi
iMac 8,1 requires x86_64 or "fat"  grub.efi
iMac 9,1 requires x86_64 or "fat"  grub.efi

James








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