I'm fixing the Radeon framebuffer driver to work
correctly when multiple video cards are installed.
If the Radeon is the only card in the system there is no problem. When framebuffer initializes it uses the copy of the ROM down in low memory.
When the Radeon is a secondary card there is no copy
of the ROM in low memory. The simple solution is to
enable the ROM on the card and use it. But that's the
problem.
When I first boot I can enable the ROM and use it as expected. But after I initialize the card the ROM contents are replaced with something else (current microcode maybe?).
Can someone with the documentation please tell me if there is anyway to get the ROM back after initalization? This is the simplest solution that avoids reworking the framebuffer code.
I seem to recall some discussion about a similar issue w/Rage128 hardware on the old xpert list. I don't remember what the conclusion was, but the answer might be the same. Try searching through the archives.
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