Opened 10 years ago
Last modified 2 years ago
#10570 closed enhancement
Native video mode with VESA through vesa bios live patching — at Initial Version
| Reported by: | pulkomandy | Owned by: | nobody |
|---|---|---|---|
| Priority: | normal | Milestone: | R1/beta4 |
| Component: | Drivers/Graphics/VESA | Version: | R1/Development |
| Keywords: | PatchVBios | Cc: | |
| Blocked By: | Blocking: | ||
| Platform: | All |
Description
This is a trick used in the Clover bootloader to get native video modes from VESA. The idea is to patch the VESA BIOS (which is shadowed in RAM) and replace the video mode tables with the EDID data.
This gets native video mode on ATI, NVidia and Intel cards, without the need to write an actual driver. Their Vesa BIOS is smart enough to accept any resolution in the table.
http://sourceforge.net/p/cloverefiboot/code/HEAD/tree/BiosVideo/
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