Supporting extension ROMs and beyond...

YhLu YhLu at
Mon Aug 11 12:42:00 CEST 2003


If I only want to use addon AGP Display adapter ROM, I don't need to use



发件人: SONE Takeshi [mailto:ts1 at] 
发送时间: 2003年8月9日 10:55
收件人: ron minnich
抄送: YhLu; linuxbios at
主题: Re: Supporting extension ROMs and beyond...

On Fri, Aug 08, 2003 at 02:29:08PM -0600, ron minnich wrote:
> On Fri, 8 Aug 2003, YhLu wrote:
> > Where is the VGA BIOS support? Still in freebios?
> it's the one that SONE used in linuxbios, he can describe again how it is 
> enabled. We are using it here for NVidia cards.

I don't know about freebios2 tree, but in freebios tree there is 
some code to call POST routine of external VGA BIOS,
and support for some realmode BIOS call (like PCI BIOS) to
help the VGA BIOS run happily.

It is activated by config like below:

    option CONFIG_VGABIOS=1
    dir src/bioscall
    option CONFIG_PCIBIOS=1
    option VGABIOS_START=0xfffe0000

The last line is needed when you use the VGA BIOS image from 
the Flash (typically for onboard VGA).

If this option is not defined, VGA card's ROM is used
(this is what Ron's original code does).

Ron: my last fix to pcibios.c is in the tree and working ok. Thanks.


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