From: Nils Faerber <nils.faerber@kernelconcepts.de>
To: Will Wagner <will_wagner@carallon.com>
Cc: linux-mtd@lists.infradead.org
Subject: Re: NAND and JFFS2 newbie question
Date: Wed, 28 Jan 2009 13:29:23 +0100 [thread overview]
Message-ID: <49804FA3.7010604@kernelconcepts.de> (raw)
In-Reply-To: <497F3CBF.4000309@carallon.com>
Will Wagner schrieb:
> Hi All,
>
> I have an arm iMx31 board with 128M of NAND flash. It all appears to be working however I
> get a lot of error/warning messages and I'd just like to check I am doing things right.
>
> The NAND chip is a ST NAND01G-B2B used in 8-bit mode which has 2048+64 byte pages and 128k
> block size. Linux is 2.6.24.7 with Freescale patches for MTD support on the iMx31 chip.
>
> I am wanting to create a JFFS2 partition on the device. The partition is created using:
>
> mkfs.jffs2 -s 2 -e 128 -c 12 -o fs.jffs2 -r jffs2_fs
I guess one of the problems will be that the sizes you specified are way
too small. Fomr the man-page of mkfs.jffs2:
"Options that take SIZE arguments can be specified as either decimal
(e.g., 65536), octal (0200000), or hexidecimal (0x1000)"
So for an eraseblocksize of 128kbytes you would specify "-e 131072".
Wrong settings can confuse jffs2 pretty easily.
> Thanks,
> Will
Cheers
nils faerber
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next prev parent reply other threads:[~2009-01-28 12:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-27 16:56 NAND and JFFS2 newbie question Will Wagner
2009-01-28 12:29 ` Nils Faerber [this message]
2009-01-28 13:19 ` Will Wagner
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