答复: LinuxBIOS Video? - coreboot

28 Apr 2004


      To make the onboard ati rage xl framebuffer work under linux, you need patch
for 2.4.22 and 2.6.5. the original ati framebuffer even not work under
normal bios.
In SUN sparc openboot and PowerPC MAC, I guess they are using framebuffer to
show text for booting....---> they have limited display card. How about us,
only support ati rage xl now.
I wonder if we can enable framebuffer for add on display card so we can get
output from crt via btext console.
YH
-----邮件原件-----
发件人: Hendricks David W. [mailto:dwh@lanl.gov] 
发送时间: 2004年4月28日 13:52
收件人: Langlois Evan
抄送: linuxbios@clustermatic.org
主题: Re: LinuxBIOS Video?
It's a bit sketchy at the time. Right now we can use ATi embedded devices
(Rage XL) pretty well, some older stuff like on the SiS630, and EPIA
whatever. But for newer stuff like GeForce cards, we have had to toggle
some IORRs and stuff and run the VGABIOS after Linux is booted. From here, 
framebuffering can be used for console display and X can run fully 
accelerated in AGP8x with fast writes and side band addressing. This has 
only been tested by us on the Tyan S2885.
On Wed, 28 Apr 2004, Langlois Evan wrote:
...
Hi,
If video isn't supported on a particular board, does this mean that video
won't work at all?   I could live with no video until after the Linux
kernel initialized things, but I'm guessing that the card won't even be
listed in the device table.
Could someone explain this to me?  Does this apply only to on-board video,
or all add-on cards.  Am I right in guessing that no add-on video cards
are supported?   Would it be possible to go into 16 bit mode temporarily
to jump into the video ROM and initialize the card?
Basically, I want a fast desktop (K8 maybe, the bus speeds seem to make it
worth it) without a PC BIOS (I only use Linux, usually Gentoo).  It looks
like LinuxBIOS is mainly for headless clusters.  The "Status" file on the
web site looks painfully outdated, and the FAQ really needs some updates,
and the mainboard directory in the source wasn't quite specific about what
was supported either.
I haven't gotten anything from this list in awhile, so please copy me
directly  as it would seem mail from the list isn't getting to me for some
reason (possibly a problem at my end).
Thanks,
Evan Langlois

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