[haiku] Re: Haiku for Raspberry Pi?

  • From: "Miroslav Stimac" <Miroslav.Stimac@xxxxxx>
  • To: haiku@xxxxxxxxxxxxx
  • Date: Mon, 30 Jan 2012 12:24:40 +0100

Simon Taylor wrote:
> There's a simple framebuffer driver under GPL as part of their kernel 
> patch set. https://github.com/raspberrypi/linux/commits/rpi-patches
> As far as the hardware accelerated features are concerned - that's not 
> quite as open. AFAIK the kernel-side (and thus GPL) part is just a 
> generic message pipe to the VideoCore - the actual GL/video decode/etc 
> implementations are probably not open. Eben (project lead) is keen to 
> open the GL stack if possible, but that's a call for Broadcom to make, 
> and I don't hold out a lot of hope.

Yes, there is a discussion about it here:

JamesH wrote:
"There is a memory mapped frame buffer accessible to the Arm which is used for 
the moment as the basic output device, no acceleration. The GPU also has access 
and uses this as a basic image to output. On top of that (or underneath – all 
images have a Z order) it can then composite the output from the decoder and 
the 3D engine (and any other bitmaps it wants, e.g. camera output) – at 
whatever resolution (autoscaled) and rotation (in 90deg steps)."

The accelerated video driver sees not to be open source, but I wonder how the 
OpenRISC team is going to make a port to the Raspberry Pi. I know that they are 
already porting OpenRISC OS to the Raspberry Pi.
Perhaps we could find some information about the drivers there.




Best wishes,
Miroslav Stimac
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