[Xen-devel] Extracting ATI/AMD Radeon VBIOS ROM

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Feb 06, 2012 at 07:57:55PM +0200, Pasi Kärkkäinen wrote:
> > > >>>- Also there's a bunch of VGA passthru related patches,
> > > >>>that I once volunteered to collect/rebase/cleanup/repost myself,
> > > >>>but I still haven't had time for that :(
> > > >>Since there were quite a lot of interest on this subject, should we
> > > >>document it in a separate wiki for working combinations (like
> > > >>hypervisor, dom0, gfx card, driver version, tricks, etc)?
> > > >>
> > > >I actually once started writing down that kind of stuff:
> > > >http://wiki.xen.org/xenwiki/XenVGAPassthroughTestedAdapters.html
> > > >
> > > >Feel free to contribute :)
> > > >
> > > >There's also:
> > > >http://wiki.xen.org/xenwiki/XenVGAPassthrough
> > > Thanks for sharing. I will contribute my findings as needed. BTW, do you 
> > > need my VBIOS loading patches (sent long time ago) for AMD GPU? It is a 
> > 
> > Yes! Thought I haven't figured out yet how to extract the AMD GPU BIOS
> > from the card. I've been able to pass in a Radeon 4870 to an Win 7 HVM
> > guest and it works nicely.. the first time. After I shut down the guest
> > it just never works again :-(
> > 
> 
> Hmm.. I wonder if this would work:
> 
> cd /sys/bus/pci/devices/0000:01:05.0
> sudo sh -c "echo 1 > rom"
> sudo sh -c "cat rom > ~/bios.rom"
> 

Extracting Radeon Mobility HD3650 VBIOS ROM as above works on my laptop.. 
(on baremetal Linux)

-- Pasi


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