Re: [Mactel-linux-users] grub-efi configuration

[Justin P. M. <jus...@gm...>]

On 05/13/10 05:21, Tino Keitel wrote:
> On Thu, May 13, 2010 at 14:05:54 +0200, mike dentifrice wrote:
>
> [...]
>
>>
>> So far, everything seems to be working : efifb provides a nice
>> textmode console, and X.org using the 'intel' driver runs seemingly
>> just as fast as when legacy booted (judging by the output of
>> glxgears).
>
> I didn't try efifb. I just use the DRM framebuffer along with kernel
> mode setting, which is also used by the native Intel driver in Xorg.
>
>> However, a few questions remain for me:
>> - what are the actual advantages and drawbacks from booting in EFI on
>>    such a platform?
>
> You don't have to mess around with gptsync, which is limited to 4
> partitions.  And in my setup, it created a dummy partition before the
> EFI partition, lowering the limit to 3.  Also, there is no delay at
> boot time which is caused by the legacy BIOS.
>
>> - where is it best to put the grub.efi EFI application? is it advised to
>>    have it sit on the first EFI system partition, within the EFI folder?
>> - if not, where?
>
> I created a small HFS+ partition only for grub. It has no journal, so I
> can also write it in Linux to update grub or modify grub.cfg.
>
> Regards,
> Tino
>
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Cool.. was looking into using efifb on
the iMac9,1 but had no luck. Either
my grub2 needed to be built with
efi support and/or I needed to add the device
address to efifb.c

What/where are the instructions?
I'd like to see if either it's a simple
configuration and/or if a patch needs
to be created for efifb.c and pushed
upstream for these devices(only a few
in there I see now).

Justin P. Mattock