Messages in this thread |  | | Subject | Re: Old platforms: bring out your dead | From | Greg Ungerer <> | Date | Mon, 11 Jan 2021 19:50:07 +1000 |
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On 11/1/21 7:36 pm, Geert Uytterhoeven wrote: > 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.
And that 68360 was bit rotten for a very long time before that. Nobody ever seemed to show much interest in it.
Keep in mind that the 68328 family of parts are pretty slow too...
>>> 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.
Yep, the ColdFire MMU is a software controlled TLB.
Regards Greg
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