linux-kernel - Re: Old platforms: bring out your dead

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Message-ID: <CAHp75VceqwbfQ=z34K=soKu4-qvLVEtobFg1sO4jukRcT7BXBg@mail.gmail.com>
Date:   Wed, 13 Jan 2021 14:21:49 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     William Breathitt Gray <vilhelm.gray@...il.com>,
        David Laight <David.Laight@...lab.com>,
        Arnd Bergmann <arnd@...nel.org>, Willy Tarreau <w@....eu>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Krzysztof Adamski <krzysztof.adamski@...ia.com>,
        Oleksij Rempel <o.rempel@...gutronix.de>,
        Baruch Siach <baruch@...s.co.il>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Daniel Tang <dt.tangr@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Jamie Iles <jamie@...ieiles.com>,
        Barry Song <song.bao.hua@...ilicon.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Jonas Jensen <jonas.jensen@...il.com>,
        Marc Gonzalez <marc.w.gonzalez@...e.fr>,
        Hartley Sweeten <hsweeten@...ionengravers.com>,
        Lubomir Rintel <lkundrak@...sk>,
        Neil Armstrong <narmstrong@...libre.com>,
        Shawn Guo <shawnguo@...nel.org>, Alex Elder <elder@...aro.org>,
        Alexander Shiyan <shc_work@...l.ru>,
        Koen Vandeputte <koen.vandeputte@...ntric.com>,
        Hans Ulli Kroll <ulli.kroll@...glemail.com>,
        Vladimir Zapolskiy <vz@...ia.com>,
        Wei Xu <xuwei5@...ilicon.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Yoshinori Sato <ysato@...rs.osdn.me>,
        Mark Salter <msalter@...hat.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: Re: Old platforms: bring out your dead

On Wed, Jan 13, 2021 at 2:17 PM Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
>
> On Wed, Jan 13, 2021 at 2:02 PM Linus Walleij <linus.walleij@...aro.org> wrote:
> >
> > On Wed, Jan 13, 2021 at 11:27 AM Andy Shevchenko
> > <andy.shevchenko@...il.com> wrote:
> > > On Mon, Jan 11, 2021 at 11:55 AM David Laight <David.Laight@...lab.com> wrote:
> >
> > > > basically 486 but have a few extra instructions - probably just cpuid
> > > > and (IIRC) rdtsc.
> > > > Designed for low power embedded use they won't ever have been suitable
> > > > for a desktop - but are probably fast enough for some uses.
> > > > I'm not sure how much keeping 486 support actually costs, 386 was a
> > > > PITA - but the 486 fixed most of those issues.
> > >
> > > Right, we have "last of mohicans" (to date) Intel Quark family of CPUs
> > > (486 core + few i586 features).
> > > This is for the embedded world and probably not for powerful use.
> >
> > What is the status of PC/104?
>
> Personally I have no idea, but...
>
> > https://en.wikipedia.org/wiki/PC/104
>
> ...from this we learn about PC/104 consortium on site of which we may
> learn about new products:
> https://pc104.org/products/vcs-1-pc-104-system-for-precision-robotics-applications/

It's ARM based for which Wiki says:

"Non-x86 PC/104 CPU boards based on ARM or PowerPC are also
commercially available. However, such boards are not capable of
running off-the-shelf PC software. In these cases, a Board Support
Package is usually provided by the manufacturer for the supported
operating system(s)."

WRT x86 I run the search
https://pc104.org/product-search-results/?kw=x86&post_tag=&product_type=&specifications=&pc-bus-technology=&user=Filter+by+Member+Company
seems like all of them are based on Vortex86DX.

> One and a half years ago, not dead to me.

-- 
With Best Regards,
Andy Shevchenko