Steve Poulsen wrote:
> 1) Use hexdump to view the first bit of the bootloader and note the
> data values. 2) Load a filesystem into filesystem2.
> 3) Use hexdump to view the first bit of the bootloader and note the
> changes. 4) hexdump filesystem2 and search for the pattern.  ( you
> might dump it to NFS filesystem for easier searching)

Good suggestions - Krunal note if you try this first one, you may have to write 
a lot of data to filesystem2 before you see it overwrite the bootloader.

If it's completely erased then writing about 512MB (0x20000000) should cross 
into the second chip select. But wear levelling abstration layers may move 
things around or leave gaps.

I would try Steve's u-boot approach:

> 1) In u-boot, use the nand commands to erase, write, and dump.  You
> should be able to narrow it down to "writing to block N causes block
> M to also change".

--
Jon Povey
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