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

Helge Hafting
2005-02-07T10:20:33Z

Jon Smirl wrote:

>On Sat, 5 Feb 2005 17:48:43 +0100, Stefan Dösinger
><stefandoesinger-RbZlAiThDcE@public.gmane.org> 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