Netkas has just released a new version of PC_EFI with full support for Snow Leopard. As it's now based on Chameleon 2.0 code, it also shares features such as GUI booting and smbios patching.

Patches added:

• Emulating 64-bit efi pages
• removed setting IODT://options by bootloader,
• changed smth in hibernate for better ati compatibility

Notes:

• By default it boots 64-bit snow leo kernel on 64-bit cpus, flag -x32 will force loading 32-bit kernel
• Known issues: boot stalls if DSDT.aml isn’t present

Source: http://netkas.org/?p=113