Re: GRUB2 - Please add support for 64-bit FreeBSD

[phcoder <phcoder@gmail.com>]

I have looked in it and isolated the files which changes are needed:
1) switching to x86_64 mode and setting the paging up
2) elf64 parser
3) different boot parameters
I'm quite optimistic and think I should have working freebsd64 soon. 
Another good piece of news is that it seems that in freebsd64 all BIOS 
calls are moved to bootloader. It's a very wise decision which also 
allows FreeBSD64 to boot on EFI or coreboot
phcoder wrote:
> I haven't looked in depth yet, but it's a bit more. the loader switches 
> to amd64 and sets preliminary page translation
> Bean wrote:
>> On Sat, Apr 11, 2009 at 5:54 AM, Daniel Nebdal <dnebdal@gmail.com> wrote:
>>> Bean wrote:
>>>> Hi,
>>>>
>>>> Please try the btx loader in /boot/loader, which I believe to be
>>>> 32-bit even in amd64 freebsd. The btx loader is an a.out executable,
>>>> grurb2 has supported for it already.
>>> Ah, just noticed I replied to this before subscribing, so the copy to
>>> the list bounced.
>>> Let's try again.
>>>
>>> The BTX loader starts, yes - but the reason I'm using GRUB2 in the
>>> first place is to skip it,
>>> since it doesn't seem to support logical partitions.
>>
>> Hi,
>>
>> Oh, thanks for the information. The 32-bit bsd kernel is basically an
>> elf image that needs a little address translation:
>>
>> physical address = virtual address & 0xFFFFFF
>>
>> I think the principle can be applied to 64-bit kernel as well, it
>> shouldn't be difficult to add support for it.
>>
> 
> 


-- 

Regards
Vladimir 'phcoder' Serbinenko