Re: S3 broken Samsung P35 - howto debug?

[Matthias Hentges <mailinglisten-H4PcyxPeSRnR7s880joybQ@public.gmane.org>]

Am Mittwoch, den 24.11.2004, 22:21 +0100 schrieb Stefan Dösinger:

[...]

> > I'll burn a bootable DOS CD later today and see if it can POST the card.
> > I don't have much hope since the code looks very familiar to radeon_boot
> > (which doesn't work).
> That's what it is good for: To test if the POST routine of you card works. If 
> vgaboot.exe doesn't work in DOS, you'll have no chance

I just tried it. It works in MS-DOS :) I guess there is still hope.
When I run it, the monitor goes out, coming back a second later with a
message about a BIOS IIRC.

Now the question is: why the hell doesn't boot_radeon work, it's using
the same addresses AFAICS. Maybe a problem with lrmi? hmmm
> 
> > It's a Radeon 9200 (see the attached lspci -vvv log for details)
> I have an Radeon 9000 mobility and I started to reverse engineer the reset 
> code and implement it in an 32 Bit protected mode linux kernel module. The 
> code that is implemented seems to work on an M6 card and on my M9, so it's 
> likely to work for yours. The Problem is that I stopped because school 
> started again and it doesn't finish the reset yet. I assume about 50% to 60% 
> are done already.
> 
> I can send you my code and you may continue it, but it might be dangerous. I 
> have no documentation about the card, and the reset routine modifies high 
> frequency PLL registers, which can be dangeros. No one(except ATI people) can 
> say if my code is correct. It may do anything, including breaking your card & 
> display, break your dishes, drown your cat(if you have one), .....

I wish I could, but that's beyond my abilities :( I don't speak C or
ASM, I'm afraid.
If you really finish this project some time, it's going to the *the*
killer app for
Radeon laptops.
-- 
Matthias Hentges 
Cologne / Germany

[www.hentges.net] -> PGP welcome, HTML tolerated
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My OS: Debian SID. Geek by Nature, Linux by Choice



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