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

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Message-ID: <CAMuHMdUia3-DroA3VOA5jkYYWP+Rip5yse-nd00JuV8uFnVp1Q@mail.gmail.com>
Date:   Mon, 11 Jan 2021 10:20:12 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
Cc:     Daniel Palmer <daniel@...f.com>,
        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>,
        Linus Walleij <linus.walleij@...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.sourceforge.jp>,
        Mark Salter <msalter@...hat.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>
Subject: Re: Old platforms: bring out your dead

Hi Adrian,

On Mon, Jan 11, 2021 at 10:16 AM John Paul Adrian Glaubitz
<glaubitz@...sik.fu-berlin.de> wrote:
> > On Sat, 9 Jan 2021 at 07:56, Arnd Bergmann <arnd@...nel.org> wrote:
> >> * 68000/68328 (Dragonball): these are less capable than the
> >>   68020+ or the Coldfire MCF5xxx line and similar to the 68360
> >>   that was removed in 2016.
> >
> > I have some patches for the DragonBall series to enable SPI etc there,
> > some patches to support the SuperVZ variant, some tools to upload
> > Linux via the integrated serial bootloader.
> > The DragonBall is probably what anyone that wants to build a 68K retro
> > computer should use as the DRAM controller is integrated and it can
> > access 32MB of SDRAM.
>
> Sounds interesting. Do these SoCs come with an MMU? And do they use the
> ColdFire instruction set or do they run plain 68k code?

No MMU, plain m68k code.

68328 Soc = 68000 core + some peripherals,
68360 SoC = CPU32 core (based on 68020 + some peripherals.

Anyone working on integrating m68k (and SPARC and MIPS?) softcores in
LiteX? ;-)

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds