Re: Grub2 SVN on 64bit Xserve 2,1

[decoder <decoder@own-hero.net>]

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Hi,


yes I am compiling grub on a 64 bit kernel and with x86_64 as target 
(--with-platform=efi --target=x86_64)

Compiling on a 32 bit machine does not succeed because the Xserve 2,1 
does not accept 32 bit EFI images.

Best regards,



Chris


Chip Panarchy wrote:
> Hello
>
> I don't know much about this.
>
> However, you're compiling it on a 64-bit kernel, right?
>
> The limitation you are talking about is the 32-bit 2 64-bit
> limitation. 32-bit only supports up to 3.25GB of RAM.
>
> Have you tried compiling it on 32-bit os? That may (for some reason)
> fix the problem.
>
> Give it a go.
>
> Panarchy
>
>
> ---------- Forwarded message ----------
> From: decoder <decoder@own-hero.net>
> Date: Thu, Apr 23, 2009 at 7:49 PM
> Subject: Grub2 SVN on 64bit Xserve 2,1
> To: grub-devel@gnu.org
> Cc: st_admin@st.cs.uni-saarland.de
>
>
> Hello all,
>
>
> recently, we tried to use Grub2 SVN on a 64bit Apple Xserve (Model
> 2,1) using EFI and after Bean solved some Xserve specific problems
> that were discussed on the Ubuntu forums
> (http://ubuntuforums.org/showthread.php?t=995704) someone else finally
> managed to boot his Xserve 2,1 model with Grub2.
>
> Ours however, did not boot and we isolated the problem to be a memory
> problem: When we plug in 4 GB or more, Grub2 fails (when you finally
> type "boot" on the command line, the machine instantly reboots). If we
> remove all but 2 GB of RAM, it works and we managed to boot a Debian
> kernel. So this seems to be a bug which only appears on this type of
> machine with >= 4GB of RAM.
>
>
> Unfortunately, I haven't found a way yet to get any debug output for
> you from the machine (serial console doesn't seem to be supported in
> EFI). If there is anything we can do to get this bug solved, please
> let us know.
>
> If this is the wrong list for this discussion, I'm sorry, I wasn't
> sure which list discusses Grub2 SVN bugs/problems :)
>
>
>
> Thanks in advance,
>
>
>
> Christian Holler
> System Administrator
>
> Saarland University
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>
>
>
> On Thu, Apr 23, 2009 at 7:49 PM, decoder <decoder@own-hero.net> wrote:
>   
>> Hello all,
>>
>>
>> recently, we tried to use Grub2 SVN on a 64bit Apple Xserve (Model 2,1)
>> using EFI and after Bean solved some Xserve specific problems that were
>> discussed on the Ubuntu forums
>> (http://ubuntuforums.org/showthread.php?t=995704) someone else finally
>> managed to boot his Xserve 2,1 model with Grub2.
>>
>> Ours however, did not boot and we isolated the problem to be a memory
>> problem: When we plug in 4 GB or more, Grub2 fails (when you finally type
>> "boot" on the command line, the machine instantly reboots). If we remove all
>> but 2 GB of RAM, it works and we managed to boot a Debian kernel. So this
>> seems to be a bug which only appears on this type of machine with >= 4GB of
>> RAM.
>>
>>
>> Unfortunately, I haven't found a way yet to get any debug output for you
>> from the machine (serial console doesn't seem to be supported in EFI). If
>> there is anything we can do to get this bug solved, please let us know.
>>
>> If this is the wrong list for this discussion, I'm sorry, I wasn't sure
>> which list discusses Grub2 SVN bugs/problems :)
>>
>>
>>
>> Thanks in advance,
>>
>>
>>
>> Christian Holler
>> System Administrator
>>
>> Saarland University
>>
>> _______________________________________________
>> Grub-devel mailing list
>> Grub-devel@gnu.org
>> http://lists.gnu.org/mailman/listinfo/grub-devel
>>
>>
>>     
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>   


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