[raspi-internals] Re: Hey, look, QPU docs

  • From: Ron Harwood <harwoodr@xxxxxxxxx>
  • To: raspi-internals@xxxxxxxxxxxxx
  • Date: Sat, 1 Mar 2014 19:36:57 -0500

http://www.raspberrypi.org/archives/6299

...article regarding the release of source and documentation... plus this:

"The source release targets the BCM21553 cellphone chip, but it should be
reasonably straightforward to port this to the BCM2835, allowing access to
the graphics core without using the blob. As an incentive to do this work, *we
will pay a bounty of $10,000 to the first person to demonstrate to us
satisfactorily that they can successfully run Quake III* at a playable
framerate on Raspberry Pi using these drivers."


On Fri, Feb 28, 2014 at 5:44 PM, David Given <dg@xxxxxxxxxxx> wrote:

> Guess what Broadcom's just released!
>
> http://www.broadcom.com/docs/support/videocore/VideoCoreIV-AG100-R.pdf
>
> It looks like the QPU and 3D hardware specs, including detailed
> information on the QPU instruction set. It would seem the main CPU isn't
> included in this, unfortunately.
>
> However they've also released a big chunk of source code which seems to
> include VC4 assembly:
>
>
> http://www.broadcom.com/docs/support/videocore/Brcm_Android_ICS_Graphics_Stack.tar.gz
>
> It all looks kinda familiar, which is good.
>
> (Both links from the Broadcom support page:
>   http://www.broadcom.com/support/)
>
> Disclaimer: I have no idea how much of the above you can look at and
> stay clean. I'm dirty so it's not relevant to me. But if you want to
> stay clean, be aware.
>
> --
> ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ───── http://www.cowlark.com ─────
> │ "There does not now, nor will there ever, exist a programming
> │ language in which it is the least bit hard to write bad programs." ---
> │ Flon's Axiom
>
>

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