EBoot下SD卡下载功能的实现  

Realization of Download Function in EBoot via SD Card

作　　者：张彬[1] 左成兵[1] 黄少珉[1] 

机构地区：[1]东南大学国家专用集成电路系统工程技术研究中心,江苏南京210096

出　　处：《现代电子技术》2008年第22期29-32,共4页Modern Electronics Technique

摘　　要：在基于WinCE构建的嵌入式系统中,EBoot下载操作系统镜像时主要为以太网、USB线、串口下载的方式。由于目前SD卡的广泛应用,通过SD卡下载操作系统镜像则成为EBoot操作系统镜像下载方式的很好的补充。这里基于东南大学国家专用集成电路系统工程技术研究中心SEP5010处理器平台实现了EBoot下SD卡下载的功能。镜像数据在SD卡中以文件系统文件的方式存在,方便了从开发工作站下载镜像。实验结果表明,该方案可以达到948 kB/s的数据平均下载速度。EBoot program downloads OS image mainly via Ethernet, USB or serial port in the WinCE - based embedded systems. Because of SD card being widely used, downloading OS image via SD card can reinforce the download function in EBoot. Realization of download function in EBoot via SD card based on the SEP5010 platform developed by National ASIC System Engineering Research Center. The image is stored in the SD card as the file in a file system, which makes downloading image from the work station more convenient. Result of the experiment shows that the speed of downloading image is 948 kB/ s on the average.

关 键 词：SD卡 SEP5010 镜像下载 EBOOT FAT文件系统 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]