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Re: Does linux support for microprocessor without MMU?

To: kjlin <>
Subject: Re: Does linux support for microprocessor without MMU?
From: Crossfire <>
Date: Thu, 22 Feb 2001 13:36:02 +1100
In-reply-to: <00ba01c09c6e$84788380$056aaac0@kjlin>; from on Thu, Feb 22, 2001 at 09:26:44AM +0800
References: <00ba01c09c6e$84788380$056aaac0@kjlin>
User-agent: Mutt/1.2.5i
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.

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