Re: Does linux support for microprocessor without MMU?

[Joe deBlaquiere <jadb@redhat.com>]

Crossfire wrote:

> kjlin was once rumoured to have said:
>
> > Howdy,
> >
> > 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.
>
> C.
There isn't (yet) support for MIPS on uClinux.

--
Joe

(aka joe@uclinux.org)