From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by oss.sgi.com id ; Wed, 21 Feb 2001 18:36:39 -0800 Received: from [203.101.127.117] ([203.101.127.117]:43400 "EHLO eris.xware.cx") by oss.sgi.com with ESMTP id ; Wed, 21 Feb 2001 18:36:29 -0800 Received: (from chris@localhost) by eris.xware.cx (8.11.0/8.11.0) id f1M2a2A24908; Thu, 22 Feb 2001 13:36:02 +1100 Date: Thu, 22 Feb 2001 13:36:02 +1100 From: Crossfire To: kjlin Cc: linux-mips@oss.sgi.com Subject: Re: Does linux support for microprocessor without MMU? Message-ID: <20010222133602.A24899@eris.xware.cx> References: <00ba01c09c6e$84788380$056aaac0@kjlin> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <00ba01c09c6e$84788380$056aaac0@kjlin>; from kj.lin@viditec-netmedia.com.tw on Thu, Feb 22, 2001 at 09:26:44AM +0800 Sender: owner-linux-mips@oss.sgi.com Precedence: bulk Return-Path: X-Orcpt: rfc822;linux-mips-outgoing 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. -- --==============================================-- Crossfire | This email was brought to you xfire@xware.cx | on 100% Recycled Electrons --==============================================--