From: Lee Revell <rlrevell@joe-job.com>
To: "Ned W. Rhodes" <ned@softwaresystemsgroup.com>
Cc: Leonid <Leonid@a-k-a.net>, linuxppc-embedded@ozlabs.org
Subject: RE: MTD Flash Howto ?
Date: Fri, 11 Aug 2006 17:26:34 -0400 [thread overview]
Message-ID: <1155331594.32351.39.camel@mindpipe> (raw)
In-Reply-To: <001a01c6b7d1$17dd6130$6201eed0@ssgpoweredge>
On Fri, 2006-08-04 at 10:20 -0400, Ned W. Rhodes wrote:
> The book Building Embedded Linux Systems has a good section on the use of
> flash file systems.
>
> When you boot, you will see something like this, depending on the type of
> flash driver you have. Make sure you have defined your mtd map in
> kernel/drivers/mtd/map.
>
> JFFS2 version 2.2. (NAND) (C) 2001-2003 Red Hat, Inc.
> JFS: nTxBlock = 965, nTxLock = 7720
>
Is JFFS2 required to mount MTD devices?
Everything seems to be set up correctly here:
S29GL512N MirrorBit Flash: probing 16-bit flash bus
S29GL512N MirrorBit Flash: Found 1 x16 devices at 0x0 in 16-bit bank
Amd/Fujitsu Extended Query Table at 0x0040
S29GL512N MirrorBit Flash: CFI does not contain boot bank location.
Assuming top.
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
Creating 2 MTD partitions on "S29GL512N MirrorBit Flash":
0x00000000-0x02a00000 : "Raw Area"
ftl_cs: FTL header not found.
0x02a00000-0x02b80000 : "User FS"
ftl_cs: FTL header not found.
blkmtd: version $Revision: 1.24 $
blkmtd: error: missing `device' name
cat /proc/mtd:
dev: size erasesize name
mtd0: 02a00000 00020000 "Raw Area"
mtd1: 00180000 00020000 "User FS"
cat /proc/partitions:
major minor #blocks name
31 0 43008 mtdblock0
31 1 1536 mtdblock1
~ # ls -al /dev/mtdblock[01]
brw-r--r-- 1 root 0 31, 0 Aug 11 14:27 /dev/mtdblock0
brw-r--r-- 1 root 0 31, 1 Aug 11 14:27 /dev/mtdblock1
As you can see the major and minor numbers are correct, but I cannot
mount the MTD partitions:
~ # mount -t minix /dev/mtdblock1 foo
mount: Mounting /dev/mtdblock1 on /foo failed: No such device
What am I doing wrong?
Lee
next prev parent reply other threads:[~2006-08-11 21:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.2056.1154699657.11183.linuxppc-embedded@ozlabs.org>
2006-08-04 14:20 ` MTD Flash Howto ? Ned W. Rhodes
2006-08-04 15:52 ` David H. Lynch Jr.
2006-08-11 21:26 ` Lee Revell [this message]
2006-08-04 7:10 Josu Onandia
-- strict thread matches above, loose matches on Subject: below --
2006-08-04 4:04 David H. Lynch Jr.
2006-08-04 16:41 ` T Ziomek
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