DOC2000 flash: Do I miss something?

[Ravi Vasarla]

Hi,

Check the MTD drivers write size, usually pagesize is same as the writesize. 
 In nandwrite.c the ioctl will fired only when passed the option like -a (autoplace) -n (noecc) passed. I guess it should not give below
 error with -j option. Check with the latest version of mtd-util of nandwrite.c file

Regards,
Ravi

________________________________________
From: Juergen Beisert [jbe at pengutronix.de]
Sent: Tuesday, March 24, 2009 18:19
To: linux-mtd at lists.infradead.org
Cc: Ravi Vasarla
Subject: Re: DOC2000 flash: Do I miss something?

Hi,

On Dienstag, 24. März 2009, Ravi Vasarla wrote:
> Just check with nandwrite with option -j (--jffs2 oob layout) instead of
> autoplace oob layout.

I tried:

$ flash_eraseall -j /dev/mtd1
$ nandwrite -j /dev/mtd1 /root.jffs2
MEMSETOOBSEL: Inappropriate ioctl for device

Only the "-a" option given to "nandwrite" works. Maybe my image is wrong. I
took a look into the email archives you mentioned and change it to:

(note: Host is x86 and also the target)

$ mkfs.jffs2 -d images/work_dir --eraseblock=0x4000 -n -p \
        --pagesize=512 -o images/root.jffs2

I'm unsure about the eraseblock and pagesize option. /proc/mtd tells me:

$ cat /proc/mtd
dev:    size   erasesize  name
[...]
mtd1: 01000000 00004000 "DiskOnChip 2000 (NFTL Model)"

But nothing about the pagesize.

Regards,
Juergen
SASKEN BUSINESS DISCLAIMER
-------------------------
This message may contain confidential, proprietary or legally privileged information. In 
case you are not the original intended Recipient of the message, you must not, directly or 
indirectly, use, Disclose, distribute, print, or copy any part of this message and you are 
requested to delete it and inform the sender. Any views expressed in this message are 
those of the individual sender unless otherwise stated. Nothing contained in this message 
shall be construed as an offer or acceptance of any offer by Sasken Communication 
Technologies Limited ("Sasken") unless sent with that express intent and with due 
authority of Sasken. Sasken has taken enough precautions to prevent the spread of 
viruses. However the company accepts no liability for any damage caused by any virus 
transmitted by this email