[haiku-bugs] Re: [Haiku] #10570: Native video mode with VESA through vesa bios live patching

  • From: "diver" <trac@xxxxxxxxxxxx>
  • Date: Fri, 30 May 2014 07:46:40 -0000

#10570: Native video mode with VESA through vesa bios live patching
--------------------------------+----------------------------
   Reporter:  pulkomandy        |      Owner:  nobody
       Type:  enhancement       |     Status:  new
   Priority:  normal            |  Milestone:  Unscheduled
  Component:  Drivers/Graphics  |    Version:  R1/Development
 Resolution:                    |   Keywords:
 Blocked By:                    |   Blocking:
Has a Patch:  0                 |   Platform:  All
--------------------------------+----------------------------
Description changed by diver:

Old 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://forum.voodooprojects.org/index.php/topic,1227.0.html?PHPSESSID=a1ogsvn9b24tmal0sjt4svonnein4kkg
>
> http://sourceforge.net/p/cloverefiboot/code/HEAD/tree/BiosVideo/

New 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://forum.voodooprojects.org/index.php/topic,1227.0.html

 http://sourceforge.net/p/cloverefiboot/code/HEAD/tree/BiosVideo/

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Ticket URL: <https://dev.haiku-os.org/ticket/10570#comment:1>
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