软件闪存转换层可实现安全失败的功能安全文件系统  

Functional Safety Embedded File System Based on Software Flash Translation Layer

作　　者：王逸鹏 张激[1] 包晟临[1] Wang Yipeng;Zhang Ji;Bao Shenglin(East-China Institute of Computing Technology,Shanghai 201808,China)

机构地区：[1]华东计算技术研究所,上海201808

出　　处：《单片机与嵌入式系统应用》2020年第11期24-27,共4页Microcontrollers & Embedded Systems

摘　　要：提出了一种基于软件闪存转换层、可实现安全失败的功能安全嵌入式文件系统,该文件系统支持通用应用程序接口与大容量存储器,并提供了可选的缓存机制以改善由于加载额外代码所导致的性能下降,兼具了高效与安全的特性,适用于NAND Flash芯片。本文具体阐述了此文件系统适用的存储芯片、设计上的模块划分、各模块的具体设计方法和提升性能的选项,最后给出了测试数据,说明该文件系统具有上述所描述的特征。本设计方法具有创新性与实用性,有一定的借鉴价值。A functional safety embedded file system based on a software flash translation layer and capable of failing security is proposed.The file system supports a universal application program interface and a large-capacity memory and provides an optional caching mechanism to improve the loading of additional code.The resulting performance degradation is both efficient and safe,and is suitable for NAND Flash chips.This article specifically describes the memory chip applicable to this file system,the design of the module division,the specific design method of each module and the performance improvement options,and finally gives the test data,indicating that the file system has the characteristics described above.This design method is innovative and practical,and has certain reference value.

关 键 词：闪存转换层 功能安全嵌入式文件系统 NAND Flash 

分 类 号：TP316.2[自动化与计算机技术—计算机软件与理论]