Dear,
I think it may be a fault of nand control signal. you have to check the control signal timing by osiloscope. all operation are needed timing check.
BR,
Choi
---------[ 받은 메일 내용 ]----------
제목 : yaffs Digest, Vol 8, Issue 1
날짜 : Tue, 03 Jan 2006 12:00:12 +0000
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Today's Topics:
1. yaffs2 - bad block marking and mtd write. (Naushad K)
----------------------------------------------------------------------
Message: 1
Date: Tue, 3 Jan 2006 10:02:30 +0900
From: Naushad K
Subject: [Yaffs] yaffs2 - bad block marking and mtd write.
To: yaffs@stoneboat.aleph1.co.uk
Message-ID:
<63681e4b0601021702k3499fc45pa8db62ccbe7b6aa8@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi,
I am trying to put yaffs2 on to the Samsung K9F1G08 nand. I am using
2.6.10 kernel.
I observed that all blocks used by the yaffs are being marked bad
block by mtd, and as per the info i got from mailing list, I commented
out the bad block marking part in the mtd. With this yaffs2 is
mounting.
And when yaffs tries to write to nand flash, the mtd nand_write
function modifies the ecc part and the oobdata gets modified. So I
modified the nand_write not to recalculate the ecc, but to just write
same oobdata from yaffs to the nand.
Are these methods correct? Is there better way or patches available for these ?
How does the yaffs2 handle a genuine bad block in the nand flash?
Thanks,
Naushad
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