Re: [Qemu-devel] [PATCH 1/2] arm: Add Nordic Semiconductor nRF51 SoC

[Stefan Hajnoczi <stefanha@gmail.com>]

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On Thu, May 03, 2018 at 10:17:51AM +0100, Peter Maydell wrote:
> On 3 May 2018 at 10:05, Joel Stanley <joel@jms.id.au> wrote:
> I'm a bit reluctant to take these patches until we have an
> actual cortex-m0 model, because anything we take into QEMU
> master is then something we have to support. My rule of thumb
> is that it's ok to have board models that are missing
> functionality, but we should avoid models that have wrong
> functionality (like the wrong CPU) where we can.

For the purposes of the micro:bit emulation project we're not sure yet
how far the M3 model will take us.  The M0 is a subset of the M3 and we
intend to use it during bring-up...and even afterwards if software runs
okay with it.

If you don't want to merge this into qemu.git/master we'll have to
maintain a "microbit" project branch on which Julia and Steffen (and
others) can work during the Google Summer of Code and Outreachy period.

My concern about keeping it out-of-tree is that we want Julia and
Steffen to participate in the upstream community and get their patches
merged.  Anything out-of-tree could still be rejected at a later date
:(.

Can we mark the machine type "experimental" and merge it in
qemu.git/master with the understanding that it may be removed if there
is no active development?

Stefan

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