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Trademarks RFS is trademark of Flash Software Group, Samsung Electronics Co., Ltd.. in Korea and other countries Restrictions on Use and Transfer All software and documents of RFS are commercial software. Therefore, you must install, use, redistribute, modify and purchase only in accordance with the terms of the license agreement you entered into with Flash Software Group, Samsung Electronics Co., Ltd. All advertising materials mentioning features or use of this software must display the following acknowledgement: “This product includes RFS written by Flash Software Group, Samsung Electronics Co., Ltd.” Contact Information: Flash Software Group Samsung Electronics Co., Ltd Address: San #16 BanWol- Dong, Hwasung-City, Gyeonggi-Do, Korea, 445-701 Preface SEC-FSG-RFS1.2-POG This document is a porting guide of RFS developed by Flash Software Group, Memory Division, Samsung Electronics. It describes Linux RFS porting procedure to user's target platform. Purpose This document is RFS Porting Guide. This document explains the definition, architecture, system requirement, and porting tutorial of RFS. This document also provides the features and API of each module that a user should know well to port RFS. Combine the above two paragraphs for one into a meaningful one Scope This document is for Project Manager, Project Leader, Application Programmers, etc. Definitions and Acronyms FTL (Flash Translation Layer) A software module which maps between logical addresses and physical addresses when accessing to flash memory IDE Integrated Development Environment CRAMFS Compressed ROM File System RFS Robust FAT File System VFS Virtual File System XSR eXtended Sector Remapper MTD Memory Technology Device LLD Low Level Device Driver Sector The file system performs read/write operations in a 512-byte unit called sector. Page NAND flash memory is partitioned into fixed-sized pages. A page is (512+16) bytes or (2048 + 64) bytes. Block NAND flash memory is partitioned into fixed-sized blocks. A block is 16K bytes or 128K bytes. NAND flash device NAND flash device is a device that contains NAND flash memory or NAND flash controller. NAND flash memory NAND-type flash memory Deferred Check Operation The method that can increase time and device operation performance. Every operation function of LLD defers the check routine to the next operation. OneNAND Samsung NAND flash device that includes NAND flash memory and NAND flash controller. Related Documents - RFS v1.3.0 Programmer’s Guide, Samsung Electronics, Co., Ltd. - LinuStoreII Utility Guide, Samsung Electronics Co., Ltd. - LinuStoreII Porting Guide, Samsung Electronics Co., Ltd. History Version Date Comment Author 0.1 2006.01.05 Initial Flash Software Group 0.8 2006.01.13 1st draft Flash Software Group 1.4 2006.02.13 Release Thomas 1.5 2006.03.16 Release Amit 1.6 2006.03.23 Release Amit 1.7 2006.04.19 RFS1.2.1 release Amit 1.8 2006.05.10 DPM porting added Seung-Jin Jung 1.9 2006.09.27 NLS added Ha-Young Kim 1.10 2006-09-29 H/W int added Kyu-Hyung Kim 1.11 2006.12.26 Review comments Vishu Kumar 1.12 2007.03.19 SAM factor modifications Seung-Jin Jung 1.13 2008-05-20 Change version to 1.3.0 Delete sections about xsr Hayoung Kim Table of Contents 1 Introduction.........................................................................................1 1.1 Overview........................................................................................1 1.2 Features.........................................................................................1 1.3 Architecture....................................................................................1 2 Prerequisites........................................................................................4 2.1 Host Environment..............................................................................4 2.2 Software Environment........................................................................4 2.2.1 Directory Structure of Linux RFS Package............................................4 2.2.2 Source Files List..........................................................................5 2.2.3 RFS Memory Usage.......................................................................6 2.3 Hardware Environment.......................................................................6 3 Porting Linux RFS...................................................................................7 3.1 Porting Overview..............................................................................7 3.2 Porting Procedure.............................................................................7 3.2.1 Installation of Linux RFS Sources......................................................7 3.2.2 Kernel Configuration for RFS...........................................................8 3.2.3 Building Linux Kernel and RFS Kernel Module.......................................9 3.3 Using the NLS (Native Language Support)...............................................1...