What all YAFFS2 options are enabled in the kernel.
Can you try disabling the autoselect.

Can you check the page size the driver returns.

If you are developing a new driver then you first try jffs2.

That is much more stable, and then we will come back to YAFFS2.

In my case i also developed a nand controller driver. and it was
working perfectly with above mentioned options with YAFFS2.

Nobin Mathew

On 7/11/07, Bryan Wu <bryan.wu@analog.com> wrote:
> On Wed, 2007-07-11 at 12:29 +0530, Nobin Mathew wrote:
> > Which is your NAND chip?
> >
> NAND device: Manufacturer ID: 0x20, Chip ID: 0xda (ST Micro NAND 256MiB
> 3,3V 8-bit)
>
> > Is it 2k page chip?
>
> yes, it is.
> >
> > Then use
> > #flash_eraseall /dev/mtdX
> > #nandwrite -a -o /dev/mtdX yaffs2_image
> > #mount -t yaffs2 /dev/mtdblockX /mnt
> >
>
> Here is the command log on my board:
> ---
> root:~> flash_eraseall /dev/mtd2
> Erasing 128 Kibyte @ fbe0000 -- 99 % complete.
> root:~>
> root:~>
> root:~> nandwrite -a -o /dev/mtd2 rootfs.yaffs2
> Writing data to block 0
> Writing data to block 20000
> Writing data to block 40000
> Writing data to block 60000
> Writing data to block 80000
> Writing data to block a0000
> Writing data to block c0000
> Writing data to block e0000
> Writing data to block 100000
> Writing data to block 120000
> Writing data to block 140000
> Writing data to block 160000
> Writing data to block 180000
> Writing data to block 1a0000
> Writing data to block 1c0000
> Writing data to block 1e0000
> Writing data to block 200000
> Writing data to block 220000
> Writing data to block 240000
> Writing data to block 260000
> Writing data to block 280000
> Writing data to block 2a0000
> Writing data to block 2c0000
> Writing data to block 2e0000
> root:~> mount -t yaffs /dev/mtdblock2 /mnt/
> yaffs: dev is 32505858 name is "mtdblock2"
> yaffs: Attempting MTD mount on 31.2, "mtdblock2"
> yaffs: auto selecting yaffs2
> root:~> cd /mnt/
> root:/mnt> ls
> lost+found
> root:/mnt>
> root:/mnt> cat /proc/yaffs
> YAFFS built:Jul 11 2007 15:32:43
> $Id: yaffs_fs.c 2682 2007-01-22 03:19:29Z aubrey $
> $Id: yaffs_guts.c 2682 2007-01-22 03:19:29Z aubrey $
>
> Device 0 "File System"
> startBlock......... 0
> endBlock........... 2015
> chunkGroupBits..... 1
> chunkGroupSize..... 2
> nErasedBlocks...... 1992
> nTnodesCreated..... 300
> nFreeTnodes........ 35
> nObjectsCreated.... 600
> nFreeObjects....... 29
> nFreeChunks........ 127542
> nPageWrites........ 0
> nPageReads......... 0
> nBlockErasures..... 0
> nGCCopies.......... 0
> garbageCollections. 0
> passiveGCs......... 0
> nRetriedWrites..... 0
> nRetireBlocks...... 0
> eccFixed........... 0
> eccUnfixed......... 0
> tagsEccFixed....... 0
> tagsEccUnfixed..... 0
> cacheHits.......... 0
> nDeletedFiles...... 0
> nUnlinkedFiles..... 0
> nBackgroudDeletions 0
> useNANDECC......... 1
> isYaffs2........... 1
> ---
>
> The rootfs.yaffs2 is made by mkyaffs2image tool from a rootfs dir.
> Why there is no rootfs subdirs such as bin/ lib/ etc/ ...?
>
> Thanks
> - Bryan Wu
>
> > Nobin Mathew
> >
> > On 7/11/07, Bryan Wu <bryan.wu@analog.com> wrote:
> > > On Wed, 2007-07-11 at 12:07 +0530, Nobin Mathew wrote:
> > > > This is the link to yaffs2 source
> > > > http://www.aleph1.co.uk/cgi-bin/viewcvs.cgi/yaffs2/
> > >
> > > Yeah, I got this source. But there is no mkyaffs
> > > >
> > > > You can use flash_eraseall and nandwrite tools from mtd_utils
> > >
> > > I am not sure my method, please help me to point out some wrong:
> > > $ flash_eraseall /dev/mtd2
> > > $ nandwrite -y -p /dev/mtd2 rootfs.yaffs2
> > >
> > > right?
> > >
> > > I use mkyaffs as this:
> > >
> > > $ eraseall /dev/mtd2    /* old mtd-utils provide eraseall */
> > > $ mkyaffs -e /dev/mtd2
> > > $ mount -t yaffs /dev/mtdblock2 /mnt
> > > $ cp "necessary files" /mnt
> > > $ umount /mnt
> > >
> > > Then I can reboot my board mounting /dev/mtdblock2 yaffs2 as rootfs.
> > >
> > > Thanks
> > > - Bryan Wu
> > >
> > > >
> > > > On 7/11/07, Bryan Wu <bryan.wu@analog.com> wrote:
> > > > > Hi folks,
> > > > >
> > > > > I am developing Blackfin NAND Flash Controller driver.
> > > > >
> > > > > YAFFS2 should be OK on our platform. I can't found the mkyaffs tool in
> > > > > the CVS now, how can I format a NAND partition as YAFFS2 without mkyaffs
> > > > > tool?
> > > > >
> > > > > Thanks
> > > > > - Bryan Wu
> > > > >
> > > > > _______________________________________________
> > > > > yaffs mailing list
> > > > > yaffs@lists.aleph1.co.uk
> > > > > http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs
> > > > >
> > >
>