[#4967] Cannot write yaffs2 image to Nand flash

Submitted By: Yi Li

Open Date

2009-03-06 03:48:42 Close Date

2009-04-13 22:35:01

Priority:

Medium Assignee:

Graf Yang

Status:

Closed Fixed In Release:

N/A

Found In Release:

snaps Release:

svn trunk

Category:

N/A Board:

EZKIT Lite

Processor:

ALL Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Rejected

Uboot version or rev.:

Toolchain version or rev.:

svn trunk 4.1

App binary format:

N/A

Summary: Cannot write yaffs2 image to Nand flash

Details:

svn trunk:

uclinux-dist: r7807

linux-kernel: r6137

rootfs.yaffs2 is built by uclinux-dist build scripts:

root:/> nandwrite -y /dev/mtd4 /tmp/rootfs.yaffs2

MEMSETOOBSEL: Inappropriate ioctl for device

If do not use the "-y" option:

nandwirte /dev/mtd4 rootfs.yaffs2

This will turn blocks of the Nand flash it touched to BAD blocks (Be careful to try it!! - It will destroy your Nand Flash).

I found there are similar discussion on the forum before:

https://blackfin.uclinux.org/gf/project/uclinux-dist/forum/?action=ForumBrowse&forum_id=39&_forum_action=ForumMessageBrowse&thread_id=8386%3Cbr%20/%3E

Follow-ups

--- Graf Yang 2009-03-19 04:26:23

According the discussion of the forum, ioctl MEMSETOOBSEL is removed since

kernel 2.6.18.

We can read/write nand partition under u-boot. For reference:

docs.blackfin.uclinux.org/doku.php?id=using_nand_flash_with_u-boot_and_linux_kernel&s=nand

--- Mike Frysinger 2009-03-19 04:42:16

maybe, but we have to have information on writing nand images from under Linux

as well

reading the nandwrite source code indicates that -y is legacy:

* force oob layout for jffs2 or yaffs ?

* Legacy support

--- Graf Yang 2009-03-24 04:38:27

Writing yaffs2 image into nand chip should have 3 methods,

1. use nandwrite in linux before kernel 2.6.18.

2. use nand erase in u-boot, then copy file system into mounted yaffs2

directory.

3. use nand write in u-boot, because it will not write oob, user only can see

lost+found after mount.

4. use nand write.yaffs in u-boot, it need a patch for u-boot-1.1.6, and still

need refactory.

As so far, most user use method 2.

--- Graf Yang 2009-03-24 05:44:48

5. mkyaffs is another method, now it is removed from mtd-util.

--- Mike Frysinger 2009-03-24 05:58:30

we still need a method that works under Linux

--- Michael Hennerich 2009-03-24 06:27:27

Does mtdchar not work?

--- Graf Yang 2009-03-24 21:46:57

mtdchar's ioctls is changed since kernel 2.6.18, while no one rewrite nandwrite.

--- Yi Li 2009-03-24 22:33:02

How about drop yaffs from our tree and use UBIFS?

--- Robin Getz 2009-03-25 11:22:09

I think we can drop yaffs after the 2009 release - but it is too late now -

there are too many people using it.

-Robin

--- Graf Yang 2009-04-03 03:08:42

I have enabled write yaffs2 image in u-boot.

As yaffs2 will be droped, it is meanless to enable this funtion in

uclinux-dist.

--- Yi Li 2009-04-13 22:35:01

Ubifs support is in svn trunk. Yaffs2 is supposed to be dropped next release.

Close the bug.

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