identifying a flash file system
Ballymunboy
ballymunboy at gmail.com
Tue Jan 17 22:12:36 EST 2012
Hello,
We have extracted the NAND flash contents from the TriMedia-based
routers from 2Wire.
We would like to re-build the router's firmware. But, as yet, the
flash file system to those devices cannot be identified.
There is a header found in the first half of page zero of the flash
device. Fields in that header appear to reference two partitions - a
boot partition and a file system partition. [1]
There is a hunch that the devices are using the flash translation
layer from m-Systems TrueFFS (now part of Sandisk). [2]
The 2Wires are running an in-house flavour of BSD (rtBSD/tm) so maybe
the file system itself is ported from elsewhere in the *BSD platform.
Has anyone here worked with TrueFFS? What would be the best method
for mounting the volume on a Linux PC for examination?
All comments and suggestions gratefully received!
cheers,
asbokid
[1] http://hackingbtbusinesshub.wordpress.com/category/nand-flash/
[2] http://www.texim-europe.com/promotion/119/trueffs%20product%20brief.pdf
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