答复: K8 northbridge f1 behaviour.

[YhLu]

Ron,

You need to set the REG in some special position. Because ht_scanbus, may
reset some regs according to it's scan result.

I think the best to use VGA is
1. LinuxBIOS init critical regs to make sure VGA can be used in Linux
kernel.
2. Linux Kernel does the special work to make use some acceleration function
works.
3. Let X Server no changes.

Regards

YH.

-----邮件原件-----
发件人: ron minnich [mailto:rminnich at lanl.gov] 
发送时间: 2004年1月8日 14:11
收件人: Stefan Reinauer
抄送: linuxbios at clustermatic.org
主题: Re: K8 northbridge f1 behaviour.

On Thu, 8 Jan 2004, Stefan Reinauer wrote:

> Do these registers maybe want an LDTSTOP_L or a reset asserted to become
> significant? 

ouch. maybe.

> Are you sure your other operations do access the VGA ports at all and
> don't operate on the graphics device directly?

These are operations that access 0x3cc and other legacy vga stuff, and 
they're not getting to vga ...

> I got an S2880 up with VGA by using the ATI biosless patch for 2.4.x
> done by some SGI guy. That is not really flexible, but it helped me to
> see light for the first time in LinuxBIOS

The right solution. We're doing the wrong solution (running the VGA bios) 
because VGA people won't let us do the right solution.

ron

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