Messages in this thread |  | | From | Geert Uytterhoeven <> | Date | Mon, 11 Jan 2021 10:36:51 +0100 | Subject | Re: Old platforms: bring out your dead |
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Hi Adrian,
On Mon, Jan 11, 2021 at 10:26 AM John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> wrote: > On 1/11/21 10:20 AM, Geert Uytterhoeven wrote: > >> 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. > > OK, I guess that would be useful for the NoMMU Linux port.
Note that 68360 support was removed from the kernel in 2016, as Arnd said.
> > Anyone working on integrating m68k (and SPARC and MIPS?) softcores in > > LiteX? ;-) > > I'm personally waiting for the Vampire to gain support for the real 68851 > as the hardware in general looks very attractive [1].
The 68851 is way too complex for what's needed (who needs support for 256 byte pages (https://lwn.net/Articles/839746/)?). They'd be better off implementing something simpler, like 68040 MMU support, or perhaps even a software-controlled TLB like most RISC architectures (incl. ColdFire?). The latter would require more changes to Linux, though.
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-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
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