FAT file system on NAND flash memory

[Josh Boyer]

On 4/12/07, Seongsu Lee <senux at senux.com> wrote:
> Hi,
>
> In my knowledge, mtdblock.c must be used to use
> FAT filesystem on bare NAND flash memories
> because NFTL is made only for a specific hardware,
> DiskOnChip.
>
> (Layer 0) VFS
> (Layer 1) FAT (or EXT2, EXT3)
> (Layer 2) mtdblock.c (nftl.c can be used only with DiskOnChip)
> (Layer 3) NAND flash memory driver (vendor specific)
> (Layer 4) Physical NAND flash memory
>
> Please let me know if it is wrong.

That layering is correct, but your results will be bad.  mtdblock
doesn't handle bad blocks.  So if you have one in the middle of your
filesystem, it will break things.  You need some kind of translation
layer if you're going to use NAND.

josh