From: jf simon <jfaslist@yahoo.fr>
To: "Michel �" <michel@tungstengraphics.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: Graphic issues (emulating VGA bios on IBM Maple)
Date: Wed, 11 Oct 2006 17:06:30 +0200 [thread overview]
Message-ID: <452D0876.7010108@yahoo.fr> (raw)
In-Reply-To: <1160574593.23225.56.camel@thor.lorrainebruecke.local>
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>>I have ported the x86emu x86 emulator to IBM PIBS firmware on a Maple
>>platform. I am now trying to emulate a PCI ATI RADEON RV100 VGA BIOS.
>>It goes all the way and seems OK. When I boot Linux , the card is
>>recognized (it wasn't before),
>>
>>
>
>If the VGA BIOS POST works correctly, you should probably see some
>output in VGA text mode. Do you?
>
>
No can do. The Maple platform can't generate any PCI memory access below
0x8000.0000. So it can't access the VGA buffer. I have removed all
these accesses from being generated by the emulator. (all other acceses
to the card, including PCI I/O accesses to the VGA registers remain
though).
I am looking at the radeon driver. Maybe it is confused as it thinks it
is running on an OF based machine while at the same time locates a x86
VGA BIOS.
-jfs
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next prev parent reply other threads:[~2006-10-11 15:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-10 20:36 Graphic issues (emulating VGA bios on IBM Maple) jean-francois simon
2006-10-11 13:49 ` Michel Dänzer
2006-10-11 15:06 ` jf simon [this message]
2006-10-11 22:16 ` Benjamin Herrenschmidt
2006-10-13 17:36 ` jf simon
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