From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frank Mandarino Date: Thu, 07 Sep 2006 16:07:04 -0400 Subject: [U-Boot-Users] [PATCH] Write YAFFS filesystem images to NAND In-Reply-To: <1157656342.30394.137.camel@blairs-desktop> References: <1157656342.30394.137.camel@blairs-desktop> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Blair, Thanks for the response, but I'm not sure what you are getting at. I am aware of the yaffs1 compatibility mode, and I think I am running the yaffs2 code in that mode. At least I only installed the yaffs2 code into my Linux kernel. But this has nothing to do with U-Boot's ability to write a yaffs filesystem image to NAND flash. In yaffs1 compatibility mode, I believe the yaffs2 code assumes that the OOB is formatted as it is in a yaffs1 filesystem, so I am providing a way to write the older yaffs1 OOB format, or the newer yaffs2 OOB format. Regards, ../fam Blair Barnett wrote: > Hi Frank, > > You can run yaffs2 in yaffs1 compatibility mode. > Check the yaffs2 source for the correct configuration options. > > -blair > > On Thu, 2006-09-07 at 11:46, Frank Mandarino wrote: >> Hi, >> >> The attached patch for common/cmd_nand.c provides the ability to write >> YAFFS filesystem images to NAND flash memory, using the newer MTD-based >> nand code. >> >> The patch extends the nand write command to parse a ".yaffs1" suffix for >> yaffs1 filesystems, or a ".yaffs" or ".yaffs2" suffix for yaffs2 >> filesystems. >> >> Yaffs1 filesystems support 512-byte page, 16-byte oob NAND chips, while >> yaffs2 filesystems support 2048-byte page, 64-byte oob NAND chips. >> >> Yaffs1 filesystem images can be generated using the mkyaffsimage utility >> in the yaffs2/utils directory. >> >> Yaffs2 filesystem images can be generated using the mkyaffs2image >> utility in the yaffs2/utils directory, after applying Sergey Kubushyn's >> patch. See >> http://aleph1.co.uk/lurker/message/20060211.004601.77b55bf3.en.html. >> >> So, for example, to write a yaffs1 filesystem image of length 0x526320 >> from address 0x20000000 in ram to offset 0x100000 in flash, run the command: >> >> nand write.yaffs1 20000000 100000 526320 >> >> The area to be written must be erased before writing the filesystem. >> >> I have tested this code with yaffs1 filesystems, and, in fact, I am >> finally able to run Linux with rootfstype=yaffs. I am unable to test >> with yaffs2 filesystems because I don't have access to a system using >> 2048+64 NAND chips. >> >> Regards, >> ../fam > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 -- Frank Mandarino fmandarino(a)endrelia.com Endrelia Technologies Inc. Toronto, Ontario, Canada