ABLE Application README - detect-large-nand
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Summary

The detect-large-nand tool is used to determine in a
useful-to-scripting way whether the primary NAND chip on a board is
small-page or large-page.

Usage

 > detect-large-nand

Options

 -v  Output the version of the tool.
 -cN Select the Nth chip to examine. (Defaults to 0)

Examples

To set a variable based on whether or not large-nand is detected:

 > detect-large-nand
 > RES=$?
 > [ $RES = 0 ] && ISLARGE=yes
 > [ $RES = 1 ] && ISLARGE=no
 > [ $RES = 2 ] && ISLARGE=error
 > [ $RES -gt 2 ] && exit 1

Return codes

The detect-large-nand tool will return zero (success) if the primary
NAND device in a system has 2048 byte pages. It will return one
(failure) if the NAND device has 512 byte pages, and two (error) if
some issue prevents the tool from detecting the NAND
properly. Possible errors encountered by the tool include being unable
to detect a NAND chip, being unable to identify the hardware type, or
being too old a version of detect-large-nand to recognise a particular
NAND device.

Copyright

  The `detect-large-nand' tool and all associated documentation is
  Copyright 2007 Simtec Electronics