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Raspberry Pi VideoCore driver code releasedRaspberry Pi VideoCore driver code releasedPosted Oct 25, 2012 11:09 UTC (Thu) by endecotp (guest, #36428)In reply to: Raspberry Pi VideoCore driver code released by swetland Parent article: Raspberry Pi VideoCore driver code released
> The big question I always ask about these designs is "can the
> peripheral processor access arbitrary memory" > Not sure how things work in this particular BCM SoC.
I hear that when this chip powers on, it's the GPU that starts first; it autonomously loads its firmware from flash, sets up the world, and then enables the ARM. It is Linux that is, in effect, running on the "secondary" processor.
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Raspberry Pi VideoCore driver code released Posted Oct 28, 2012 16:52 UTC (Sun) by JanC_ (guest, #34940) [Link]
Which makes the ARM that you can run linux on a coprocessor that now can do callbacks to the main processor...
As if you would have an open source Arduino program send graphics commands over the USB/serial interface to your Windows PC, let a closed source program on the PC render stuff on its screen based on those commands, and then claim the Arduino has an open source GPU driver.
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