Multiboot-compliant x84-64 Kernel?

Multiboot-compliant x84-64 Kernel?

[Alita Friedrichsen]

Hi,

I want to write a little Multiboot-compliant x84-64 Kernel. Is there any
good way to boot it with GRUB Legacy? What are the plans for the future?

cu
Alita

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Re: Multiboot-compliant x84-64 Kernel?

[Marco Gerards]

"Alita Friedrichsen" <x-alita@gmx.net> writes:

Hi Alita,

> I want to write a little Multiboot-compliant x84-64 Kernel. Is there any
> good way to boot it with GRUB Legacy? What are the plans for the future?

There are plans for a new multiboot.  You could have a look at the
plans on the wiki:

http://grub.enbug.org/

This is all for GRUB 2.  For GRUB Legacy this just won't happen, I
think.

--
Marco

Re: Multiboot-compliant x84-64 Kernel?

[Alita Friedrichsen]

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Hi Marco!

> There are plans for a new multiboot.

Oh, that sounds good. Protect the Multiboot information structure from
overwriting ist a realy hard job.

> This is all for GRUB 2.  For GRUB Legacy this just won't happen, I
> think.

But how log does it take before I can use it? GRUB Legacy comes with every
new Linux distribution. Thats is realy cool, so that the current Multiboot
Specification is a Standard that works. I don't want to break with that
Standard. Are there any Multiboot-compliant x86-64 Kernels out there? If
yes, how do do they that?

cu
Alita

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Re: Multiboot-compliant x84-64 Kernel?

[Marco Gerards]

"Alita Friedrichsen" <x-alita@gmx.net> writes:

> Hi Marco!
>
>> There are plans for a new multiboot.
>
> Oh, that sounds good. Protect the Multiboot information structure from
> overwriting ist a realy hard job.
>
>> This is all for GRUB 2.  For GRUB Legacy this just won't happen, I
>> think.
>
> But how log does it take before I can use it? GRUB Legacy comes with every
> new Linux distribution. Thats is realy cool, so that the current Multiboot
> Specification is a Standard that works. I don't want to break with that
> Standard. Are there any Multiboot-compliant x86-64 Kernels out there? If
> yes, how do do they that?

You could have a look at the archives of the list.  IIRC there was a
patch for 64 bits ELFs that was applied to GRUB 2.  That is for the
current multiboot.  Perhaps that's enough for you.

--
Marco

Re: Multiboot-compliant x84-64 Kernel?

[Alita Friedrichsen]

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Hi Marco!

> You could have a look at the archives of the list.  IIRC there was a
> patch for 64 bits ELFs that was applied to GRUB 2.  That is for the
> current multiboot.  Perhaps that's enough for you.

Yes, thanks. But this Patch first is not Multiboot-compliant und secondly
does not work with GRUB Legacy. I'm searching for way to boot my Kernel with
a normal GRUB. If there ware a Multiboot Specification that specify that and
the GRUB, that implement that, would released in the next month, this would
something defferent, but today there is nothing fixed. So I'm looking for a
preferably good way to boot my Kernel with the current Multiboot
Specification.

cu
Alita

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Re: Multiboot-compliant x84-64 Kernel?

[Marco Gerards]

"Alita Friedrichsen" <x-alita@gmx.net> writes:

> Hi Marco!
>
>> You could have a look at the archives of the list.  IIRC there was a
>> patch for 64 bits ELFs that was applied to GRUB 2.  That is for the
>> current multiboot.  Perhaps that's enough for you.
>
> Yes, thanks. But this Patch first is not Multiboot-compliant und secondly
> does not work with GRUB Legacy. I'm searching for way to boot my Kernel with
> a normal GRUB. If there ware a Multiboot Specification that specify that and
> the GRUB, that implement that, would released in the next month, this would
> something defferent, but today there is nothing fixed. So I'm looking for a
> preferably good way to boot my Kernel with the current Multiboot
> Specification.

It was applied by Okuji IIRC, so I assume the patch is multiboot
complaint...  But I didn't read the patch entirely.

If you have questions about GRUB Legacy you should ask on
bug-grub@gnu.org.  This list is about GRUB 2.

--
Marco

Re: Multiboot-compliant x84-64 Kernel?

[Timothy Baldwin]

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On Sunday 13 Nov 2005 22:01, Alita Friedrichsen wrote:

> So I'm looking for a preferably good way to boot my Kernel with the current
> Multiboot Specification.

Your kernel will have to switch to 64 bit mode itself, if using GRUB Legacy.

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Re: Multiboot-compliant x84-64 Kernel?

[Alita Friedrichsen]

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Hallo Timothy!

> Your kernel will have to switch to 64 bit mode itself, if using GRUB
> Legacy.

Sure, but what is the best way to link the 64-Bit Code in to the 32-Bit ELF?
Or is it better to use a.out?

cu
Alita

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