Now I'm so tempted to get a stack of Raspberry Pi 3 and this case:

On Thu, Mar 3, 2016 at 6:53 AM Richard Miller <> wrote:

> Getting Plan 9 to boot on the pi3 (in 32-bit mode) was almost trivial.
>         Plan 9 from Bell Labs
>         board rev: 0xa02082 firmware rev: 1456410415
>         cpu0: 1200MHz ARM Cortex-A53 r0p4
>         fp: 32 registers,  simd
>         fp: arm arch VFPv3+ with null subarch; rev 4
>         eMMC external clock 250 Mhz
>         #u/usb/ep1.0: dwcotg: port 0X0 irq 9
>         992M memory: 200M kernel data, 792M user, 3762M swap
>         cpu1: 1200MHz ARM Cortex-A53 r0p4
>         cpu2: 1200MHz ARM Cortex-A53 r0p4
>         cpu3: 1200MHz ARM Cortex-A53 r0p4
>         usb/hub... usb/ether...
>         etherusb smsc: b827ebXXXXXX
>         version...time...
>         init: starting /bin/rc
>         pi3#
> The "almost" is because the latest GPU firmware now initialises the
> ARM cores in HYP mode.  This change seems to have been made in October,
> and affects the pi2 as well.  Getting from HYP to SVC mode at boot time
> is no longer as simple as a MOVW into CPSR, and requires three new
> instructions that 5a doesn't know about ...

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