[coreboot] SeaBIOS and the Geode LX framebuffer

Jordan Crouse jordan.crouse at amd.com
Mon Oct 6 16:35:15 CEST 2008

On 06/10/08 15:31 +0100, Stephen Crocker wrote:
> Carl-Daniel Hailfinger wrote:
> > On 03.10.2008 12:29, Stephen Crocker wrote:
> >> Is there a way of getting VGA support with SeaBIOS on the AMD Geode LX
> >> framebuffer?  I have successfully built and tested a BIOS image that
> >> appears to boot into DOS but the lack of display means that it is of
> >> little use.  Is there a VGA ROM image that I can include?
> > 
> > You'd need a VGA emulation VSA and AFAIK that piece of software is not
> > available as open source due to an interesting rights situation.
> How much of this is handled in AMD's binary VSA module?  I have been 
> looking through both the AMD and OpenVSA source and it looks as if the 
> lxvg module is supposed to handle VGA SMIs but I cannot find where this 
> is actually done.

None of it - the VGA is actually a seperate component under difference
licensing.  Thats why you don't see it in the VSA code.

> Incidentally, I have noticed that the AMD VSA source available from 
> dev.laptop.org cannot be used to build an image with CS5536 support.  Is 
> this an old version and, if so, is newer source available?




Jordan Crouse
Systems Software Development Engineer 
Advanced Micro Devices, Inc.

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