ARM Versatile multi-platform support

Quoted 25 lines · Marc Zyngier

Quoted 10 lines · Peter Maydell

Quoted 9 lines · Rob Herring

Arnd lit a fire under me to dust this off and get it merged. So here it is. The main change from prior version is I merged all the code to a single file. It's a bigger patch than I'd like, but I don't think trying to do it in multiple steps is worth it.

This is dependent on some solution for the default platform choice on !MMU builds (allnoconfig) as it can't be Versatile after this series. Arnd has some ideas on how to address that.

Quoted 8 lines

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This is tested under QEMU. Linus previously tested this on actual h/w and had a problem with the display identification which needs investigation or agreement to worry about it if and when someone actually cares.

I handed my PB hardware and its PCI backplane back to Will and Marc some time back, so they're in the best position to do testing of the PCI part on real hardware if needed these days.

I don't really have the bandwidth to test that stuff right now, but I recently managed to score a few PCI backplanes (backplane only, without the massive case, so an ATX power supply is required to make use of it). Some documentation is available at [1].

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I could easily be convinced to part with one of them, and even drop it at a suitably located Linaro office, if that helps...

How about in a canal? That will cut the install base in half. ;)

We'll settle for an ack meaning "I don't have time to test, working for qemu is good enough, we should merge this anyway and can pick up the pieces later if any of the 2 or 3 people that have a system ever really care."