RE: MTD Flash Howto ?

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