Re: possible deprecation and removal of some old QEMU Arm machine types (pxa2xx, omap, sa1110)

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On Tue, 13 Feb 2024 at 23:22, Linus Walleij <linus.walleij@xxxxxxxxxx> wrote:
>
> On Tue, Feb 13, 2024 at 9:12 PM Arnd Bergmann <arnd@xxxxxxxx> wrote:
> > On Tue, Feb 13, 2024, at 16:36, Guenter Roeck wrote:
> > > On Tue, Feb 13, 2024 at 03:14:21PM +0000, Peter Maydell wrote:
> > >> On Mon, 12 Feb 2024 at 14:36, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> > >> > On 2/12/24 04:32, Peter Maydell wrote:
>
> > >> > > The one SA1110 machine:
> > >> > >
> > >> > > collie               Sharp SL-5500 (Collie) PDA (SA-1110)
> > >> > >
> > >> > I do test collie.
> >
> > Adding Linus Walleij and Stefan Lehner to Cc, as they were
> > interested in modernizing sa1100 back in 2022. If they
> > are still interested in that, they might want to keep collie
> > support.
>
> I'm not personally interested in the Collie, I have a SA1100 hardware
> but not that one.
>
> > Surprisingly, at the time I removed unused old board files,
> > there was a lot more interest in sa1100 than in the newer
> > pxa platform, which I guess wasn't as appealing for
> > retrocomputing yet.
>
> Andrea Adami and Dmitry Eremin-Solenikov did the work in 2017 to
> modernize it a bit, and Russell helped out. I was under the impression
> that they only used real hardware though!

I used both Qemu and actual hardware (having collie, poodle, tosa and
c860 that was easy).

The biggest issue with Zaurus PDAs was that supporting interesting
parts of the platform (PCMCIA, companion chips) required almost
rebootstrapping of the corresponding drivers.
E.g. I had a separate driver for the LoCoMo chip which worked properly
with the DT systems.
PCMCIA was a huuuge trouble and it didn't play well at all. The driver
must be rewritten to use the component framework.

lf there is interest in modernising / updating StrongARM / PXA
devices, please count me in. I don't have time to lead the effort, but
I'd like to contribute.

> The Collie is popular because it is/was easy to get hold of and
> easy to hack. PXA was in candybar phones (right?) which
> are just veritable fortresses and really hard to hack so that is why
> there is no interest (except for the occasional hyperfocused Harald
> Welte), so those are a bit like the iPhones: you *can* boot something
> custom on them, but it won't be easy or quick, and not as fun and
> rewarding.
>
> The thriving world of PostmarketOS only exist because Google was
> clever to realize devices should have a developer mode.

There were two projects that worked on reenabling phones and PDAs from
that era, hack'n'dev and handhelds.org. I think both of them were dead
when the Zaurus was still alive and kicking.

-- 
With best wishes
Dmitry





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