Hi Charles,
I will continue to work on your suggestions and try to find if there is
any problem in writing oob data which marks blocks bad.
I tried to see bad block creation in NAND using various write operation &
my observations are as below. I hope you can put some comment on this.
Writing data through nandwrite didnot create any bad block.
steps followed:-
1) erased all bad blocks of nand flash in u-boot.
# nand scrub
2) booted with ramdisk image
3) written file to one of the nand partition using nandwrite
command.
# nandwrite -a -o /dev/mtd11 /tmp/rootrfs_1.yaffs2
Writing data through cp after mounting flash drive as yaffs2 marked blocks
as bad block.
steps followed:-
1) erased all bad blocks of nand flash in u-boot.
# nand scrub
2) booted with ramdisk image
3) erased and mounted one nand partition as yaffs2.
# flash_eraseall /dev/mtd11
# mount -t yaffs2 /dev/mtdblock11 /mnt/src
4) written file to nand partiton using cp command.
# cp /tmp/rootrfs_1.yaffs2 /mnt/src/
>From above test i could understand that there is some difference in data
written through yaffs2 and nandwrite.
Please comment on where exactly it points.
One Request :- Please put me in CC when you reply to this message as i am
not able to directly reply from forum(not sure why).
Thanks
Rupesh
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