Apart from the web sites referenced, here are some books and documents we found to be useful:
Application Note: Using DiskOnChip Under Linux With M-Systems Driver,RTD Embedded Technologies Inc.,SWM-640000016A
Installation Manual for DiskOnChip TrueFFS driver for Linux ,M-Systems
Building Embedded Linux Systems, Karim Yaghmour.O.reilly,First Edition, April 2003
Installation Manual IM-DOC-021,Using the DiskOnChip with Linux OS,Ron Dick, Esther Spanjer, Vadim Khmelnitsky, M-Systems
Installation Guide available with M-Systems TrueFFS Linux driver version 5.1.4
Understanding the Linux Kernel, Daniel P. Bovet & Marco Cesati, O.reilly, Second Edition, March 2002.
Booting Linux: The History and the Future, Werner Almesberger, June 25,2000