Re: Does linux support for microprocessor without MMU?

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On Wed, 21 Feb 2001, Joe deBlaquiere wrote:
> Crossfire wrote:
> > kjlin was once rumoured to have said:
> >> I got an embedded MIPS board recently.
> >> It has the following features:
> >> - CPU implements a five-stage pipeline with performance similar to the MIPS R3000 pipeline.
> >> - MIPS32 compatible instruction set
> >> - R4000 style privileged resource architecture.
> >> - Without MMU.
> >> 
> >> I am estimating the possibility of porting linux on it.
> >> Can Linux/MIPS 2.2 or 2.4 support for such a board which without MMU ?
> >> Because i consider it is the most difficult part in the porting process.
> >> Am i right?
> > 
> > the Standard Linux kernels all require an MMU.  However, there is a
> > version of the kernel known as "ucLinux" (Microcontroller Linux) which
> > will run on CPUs without MMU.
> > 
> > I don't know if ucLinux has a MIPS target yet.
> 
> There isn't (yet) support for MIPS on uClinux.

But it can't be that hard to add support for it...

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven ------------- Sony Software Development Center Europe (SDCE)
Geert.Uytterhoeven@sonycom.com ------------------- Sint-Stevens-Woluwestraat 55
Voice +32-2-7248626 Fax +32-2-7262686 ---------------- B-1130 Brussels, Belgium



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