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Re: [Qemu-devel] Re: [PATCH 1/4] Add GPL bios as a submodule


From: Anthony Liguori
Subject: Re: [Qemu-devel] Re: [PATCH 1/4] Add GPL bios as a submodule
Date: Sun, 17 May 2009 18:22:38 -0500
User-agent: Thunderbird 2.0.0.21 (X11/20090320)

Stanislav wrote:
What does Coreboot give us over seabios?

You asking :)

- It is much better maintained and sponsored by technology leaders (IBM,
AMD, Intel).

Take a look at who has been contributing to patches to the Bochs BIOS lately via QEMU :-)

  Also as I understood some of bios stuff is patented, IBM bought these
patents and contributed them to Coreboot project.

Can you point me to specific information about this?

- I expect it will do support all recent stuff (new ACPI specs, UEFI and
etc) much faster than seabios.

I find this very unlikely. I don't think coreboot bothers with things like building ACPI tables. Why would it have to when it has a full Linux environment?

Also, I find it very unlikely that it would bother support uefi interfaces. Maybe provide tiano core as a payload but we could always just use tiano core on top of QEMU directly. The problem with uefi is that you still need a CSM to support 99% of guests out there which means that you would still need a seabios module for tiano core.

- It is written for real modern hardware as well so it is validated on real
life as well.

It's a neat project and I think it's valuable to make it more easily used in QEMU, but I don't think it can replace our existing BIOS. I also don't think that that's its general mission statement either. I think its primary purpose is to eliminate all the legacy firmware junk and provide the quickest and most featureful environment for large clusters.

Doesn't Coreboot use seabios for legacy OS?

No idea ...

It does.

Regards,

Anthony Liguori





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