On Tue, Nov 22, 2011 at 11:11 AM, Rudolf Marek r.marek@assembler.cz wrote:
I want to implement a Callback Function (04E08H- System BIOS INT 15H) for the AMD Video vBIOS (ATOM BIOS Extension Functions)
to support LVDS TFT Displays with AMD G-Series processors (Persimmon mainboard).
Is there any freely accessible documentation? Do you know if VBIOS calls this? I tried to investigate if mine video BIOS is doing any calls but if I recall correctly i havent seen that. I have some trouble with flicker during FID/VID changes any clue here?
What is the best way to do this in SeaBIOS?
I guess just implementing that.
I need some parameter like UMA base and size from Coreboot. How can I transfer this information from Coreboot to SeaBIOS?
Read the config out of the hardware if possible. Check gfx.c in coreboot how to do that.
Thanks Rudolf
I'm not sure all these links are still good, but there is some public info about the atombios.
The AtomBIOS disassembler is available at : http://cgit.freedesktop.org/~mhopf/AtomDis/
Matthias' blog post with instructions is at : http://emmes.livejournal.com/3678.html
The most current atombios.h file version is usually the one in the kernel driver maintainer's drm-radeon-testing tree, which is at : http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=tree;f=drive...
Thanks,
Wolfgang
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