grub-efi with latest mac mini

[John Frankish]

I've been trying to get grub-efi to work with the latest mac mini.

To avoid having no way to boot if I cannot get grub-efi to work, I'm booting 
via rEFIt at the moment.

Grub-1.99 is installed to /mnt/sda2/efi/grub, and I can boot grub-efi via the 
rEFIt menu, but:

1. I do not get any screen display until the linux os (3.0.21) starts to boot

2. Once booted, neither the usb mouse nor usb keyboard work


Grub-efi was installed with:

$ x86_64-grub-mkimage -O x86_64-efi -d /usr/local/lib/x86_64-grub/x86_64-efi -o 
grub.efi -p "" part_gpt part_msdos hfsplus fat ext2 normal chain boot 
configfile linux multiboot pci lspci setpci usb_keyboard efi_gop ohci uhci usb 
video

I've use the following for the display in grub.cfg:

insmod font
loadfont /efi/grub/unicode.pf2
insmod gfxterm
set gfxmode=auto
set gfxpayload=keep
terminal_output gfxterm

..and since I've used the usb module in grub-mkimage, I would have thought the 
usb keyboard/mouse would work

Any pointers would be much appreciated.

Regards
John