Secondly: If you have a Mac and want to run Linux on it, the easiest approach is going to be to run it under virtualisation. Virtualbox is free, and worth every bit of what you're paying.
Thirdly: If you're going to boot Linux on bare-metal Apple hardware, boot it via BIOS emulation.
Fourthly: If you're going to boot Linux on bare-metal Apple hardware via EFI, and it doesn't work, write a patch. Apple's firmware has a number of quirks that I'm aware of and we're working through them, but anyone filing bugs against Apple hardware on EFI right now is likely to be ignored for a significant period of time until there's an expectation that it'll actually work. Maybe in six months or so.