基于TFFS的嵌入式系统在线升级设计与实现  

Design and Implementation of Embedded System Online Upgrade Based on TFFS

作　　者：王子健[1] 张军[1] 罗喜伶[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083

出　　处：《计算机工程》2006年第13期257-259,共3页Computer Engineering

基　　金：航空科学基金资助项目"开放式的新航行系统数据链体系结构技术研究"(02F51070)

摘　　要：针对传统嵌入式系统升级方式的不足,提出了一种基于TFFS的嵌入式系统在线升级方案,实现了不需仿真器就可远程在线升级操作系统内核和应用程序以及引导映像的功能。描述了总体方案,讨论了关键技术,包括TFFS文件系统、启动流程设计和双机热备份,论述了方案的具体实现,进行了可靠性设计。该方案在嵌入式航空固定电信网(AFTN)网关系统中得到了应用和验证。Aiming at the shortage of the traditional method of embedded system upgrade, a project of embedded system online upgrade based on TFFS is put forward. The operation core, application and bootRom can be online upgraded from remote host without ICE. First of all, the whole project is described, secondly, some key techniques, such as the TFFS file system, the design of the start flow and system backup are discussed, then the realization of the project is discussed in detail, the reliability is designed at last. This project is implemented and verified in the embedded AFTN gateway system.

关 键 词：TFFS 嵌入式系统 在线升级 VXWORKS 航空固定电信网 

分 类 号：TP302.1[自动化与计算机技术—计算机系统结构]