From: Frank Mandarino <fmandarino@endrelia.com>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] [PATCH] Write YAFFS filesystem images to NAND
Date: Thu, 07 Sep 2006 14:46:43 -0400 [thread overview]
Message-ID: <edppel$tl4$1@sea.gmane.org> (raw)
Hi,
The attached patch for common/cmd_nand.c provides the ability to write
YAFFS filesystem images to NAND flash memory, using the newer MTD-based
nand code.
The patch extends the nand write command to parse a ".yaffs1" suffix for
yaffs1 filesystems, or a ".yaffs" or ".yaffs2" suffix for yaffs2
filesystems.
Yaffs1 filesystems support 512-byte page, 16-byte oob NAND chips, while
yaffs2 filesystems support 2048-byte page, 64-byte oob NAND chips.
Yaffs1 filesystem images can be generated using the mkyaffsimage utility
in the yaffs2/utils directory.
Yaffs2 filesystem images can be generated using the mkyaffs2image
utility in the yaffs2/utils directory, after applying Sergey Kubushyn's
patch. See
http://aleph1.co.uk/lurker/message/20060211.004601.77b55bf3.en.html.
So, for example, to write a yaffs1 filesystem image of length 0x526320
from address 0x20000000 in ram to offset 0x100000 in flash, run the command:
nand write.yaffs1 20000000 100000 526320
The area to be written must be erased before writing the filesystem.
I have tested this code with yaffs1 filesystems, and, in fact, I am
finally able to run Linux with rootfstype=yaffs. I am unable to test
with yaffs2 filesystems because I don't have access to a system using
2048+64 NAND chips.
Regards,
../fam
--
Frank Mandarino fmandarino(a)endrelia.com
Endrelia Technologies Inc.
Toronto, Ontario, Canada
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next reply other threads:[~2006-09-07 18:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-07 18:46 Frank Mandarino [this message]
2006-09-07 19:12 ` [U-Boot-Users] [PATCH] Write YAFFS filesystem images to NAND Blair Barnett
2006-09-07 20:07 ` Frank Mandarino
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