Re: [ACPI] Re: [RFC] Reliable video POSTing on resume

[Helge Hafting]

Jon Smirl wrote:

> On Sat, 5 Feb 2005 17:48:43 +0100, Stefan DÃsinger
> <stefandoesinger@xxxxxx> wrote:
>  
>
> > The reset code of radeon card seems to be easy to reverse engineer. I have
> > started an attempt and I have 50-60% of my radeon M9 reset code implemented
> > in a 32 bit C program. I had to stop due to school reasons.
> >    
>
> The problem with the radeon reset code is that there are many, many
> variations of the radeon chips, including different steppings of the
> same part. The ROM is matched to the paticular bugs of the chip. From
> what I know ATI doesn't even have a universal radeon reset program.
>  
Maybe they could provide such a program, if asked?
Basically, a chip detect and a switch statement containing all
the bios reset sequences they have.

They may want to protect "trade secrets" about innovative
3D-pipelines and such.  But the bios reset is probably not that
high-end, so perhaps they could provide source code for it?

Helge Hafting
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