Re: [Yaffs] Yaffs Packed Tags and bad block markings

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Author: Thomas Gleixner
Date:  
To: Lance Ware
CC: YAFFS
Subject: Re: [Yaffs] Yaffs Packed Tags and bad block markings
On Wed, 2005-03-23 at 16:55 -0500, Lance Ware wrote:
> I am using yaffs2 and i am looking at the arrangement of the extended
> tags areas. My question is i have a Samsung chip which uses bad block
> markers at the 0 byte of the 64-byte spare area. But when i pass the
> extended tags parameter to my nand_write function, the bad block maker
> is overwritten with the tag information.


What is your nand_write function ? Userspace application ?

> I was wondering was their a way to change the arrangement of the bad
> block marker.


No

> Or should i handle this in the mtd-layer. I was wondering what the
> layout of the extended tag area supposed to be in the nand spare area.


The mtd layer uses a autoplacement scheme, which respects the reserved
bytes in the oob area (bad block marker, ECC)

tglx