From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Mon, 02 Sep 2002 21:46:31 +0200 (CEST) Received: from p508B7CE7.dip.t-dialin.net ([80.139.124.231]:47749 "EHLO dea.linux-mips.net") by linux-mips.org with ESMTP id ; Mon, 2 Sep 2002 21:46:31 +0200 Received: (from ralf@localhost) by dea.linux-mips.net (8.11.6/8.11.6) id g82KkFW18147; Mon, 2 Sep 2002 22:46:15 +0200 Date: Mon, 2 Sep 2002 22:46:15 +0200 From: Ralf Baechle To: Matthew Dharm Cc: Linux-MIPS Subject: Re: PATCH: linux_2_4: add support for the Ocelot-G board Message-ID: <20020902224615.A17378@linux-mips.org> References: <20020902190038.F15618@linux-mips.org> <20020902123850.A28171@momenco.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20020902123850.A28171@momenco.com>; from mdharm@momenco.com on Mon, Sep 02, 2002 at 12:38:50PM -0700 Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 56 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Mon, Sep 02, 2002 at 12:38:50PM -0700, Matthew Dharm wrote: > Oh, I agree that a 64-bit kernel makes sense. I'm just not sure what is > needed to get from where I am now to where I want to be. > > There is _much_ interest from our customers for 64-bit linux. Especially > if the toolchain catches up so that we can have 64-bit userspace. The toolchain stuff is being worked on. Hold your breath but cheat every once in a while when your face turns blue ;-) > Anyone have some quick pointers on how to get from here to there? The basic receipe is easy. The 64-bit kernel has a binary compatibility layer that allows you to use 32-bit software with no changes. Just use a 64-bit compiler, for now that's probably still the egcs 1.1.2 / binutils 2.9.5 based mips64-linux / mips64el-linux tool chain. Using your old .config file do a "make ARCH=mips64 oldconfig" etc. The resulting binary file will be a 32-bit ELF file so you can just feed that to your firmware for booting as usual. Problems may be hit along the way ;-) Ralf