From manningc2@actrix.gen.nz Mon Mar 08 22:23:06 2010 Received: from smtp.firstline.co.nz ([203.167.210.162] helo=firstline.co.nz) by stoneboat.aleph1.co.uk with smtp (Exim 4.69) (envelope-from ) id 1NolLk-0002PF-5M for yaffs@lists.aleph1.co.uk; Mon, 08 Mar 2010 22:23:06 +0000 Received: (qmail 15341 invoked by uid 453); 8 Mar 2010 22:22:42 -0000 X-Virus-Checked: Checked by ClamAV on firstline.co.nz Received: from Unknown (HELO linux-dual-head.local) (10.14.210.25) by firstline.co.nz (qpsmtpd/0.40) with ESMTP; Tue, 09 Mar 2010 11:22:42 +1300 From: Charles Manning To: yaffs@lists.aleph1.co.uk Date: Tue, 9 Mar 2010 11:22:41 +1300 User-Agent: KMail/1.9.10 References: <8CC81D7DBEF3542-CE8-AE9@web-mmc-m07.sysops.aol.com> <326806.20707.qm@web29118.mail.ird.yahoo.com> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <201003091122.41658.manningc2@actrix.gen.nz> X-SA-Exim-Connect-IP: 203.167.210.162 X-SA-Exim-Mail-From: manningc2@actrix.gen.nz X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on stoneboat.aleph1.co.uk X-Spam-Level: X-Spam-Status: No, score=-1.9 required=4.5 tests=AWL,BAYES_00,SPF_NEUTRAL autolearn=no version=3.2.5 X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:14:11 +0000) X-SA-Exim-Scanned: Yes (on stoneboat.aleph1.co.uk) Subject: Re: [Yaffs] YAFFS for beginners? X-BeenThere: yaffs@lists.aleph1.co.uk X-Mailman-Version: 2.1.11 Precedence: list List-Id: Discussion of YAFFS NAND flash filesystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Mar 2010 22:23:06 -0000 On Saturday 06 March 2010 21:10:36 Dean Sinaean wrote: > Hello, > I am a beginner for yaffs ,too.. I am to use it on a 64M nand flash and it > is 512+16 type. > My OS is linux,kernel version is 2.6.30 .My question is how should I fix it > into my kernel and how should I make the image? > I've tried to patch it and configure it in many ways and make the image > using mkyaffsimg. But the result is disappointing. It just can execute > linuxrc(busybox). First get yaffs working by itself while running from a different root. Once you have it all working then work through what is required to make the yaffs root. You need your NAND exposed as an mtdblock device. Get a yaffs tarball. Patch it into the linux tree using the patch-ker.sh script. Config yaffs parts of the kernel. Build kernel. Boot and use the tracing. Google for yaffs tracing for more info. --- Charles > > On Wed, Feb 24, 2010 at 9:48 AM, Sven Van Asbroeck wrote: > > > I intend to use YAFFS to a SD Card > > > file system. > > > > If you are planning to use an SD Card as a storage medium, you don't need > > yaffs. Using yaffs on an SD Card medium does not give you any benefits. > > If anything, it will wear out your SD Card faster. > > > > yaffs is a file system designed to run on top of raw flash. An SD Card is > > not raw flash. It contains a raw flash chip, true, but it also contains a > > microcontroller with firmware which will make the raw flash look like a > > standard disk (block device). This firmware is called a 'flash > > translation layer'. > > > > In short, if you want to use an SD Card as a storage medium, use a > > standard disk (block device) file system such as FAT. > > > > Sven > > > > > > > > > > > > > > _______________________________________________ > > yaffs mailing list > > yaffs@lists.aleph1.co.uk > > http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs