NXP offers Linux SDK for the TWR-LS1021board.
Look at documentation for this SDK on the following page:
http://www.nxp.com/products/software-and-tools/run-time-software/linux-sdk/linux-sdk-for-qoriq-proce...
See the Section 4.4.4.6 of the QorIQ SDK 2.0-1701 Documentation:
http://www.nxp.com/assets/documents/data/en/supporting-information/QORIQ-SDK-2.0-IC-REV0.pdf
This Section provides information about NOR Flash usage on the TWR-LS1021a board.
Have a great day,
Pavel Chubakov
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