基于ARM的智能手持设备

辽宁科技大学毕业设计（论文）第I页基于ARM的智能手持设备摘要随着Internet的发展和后PC时代的到来，电子产品的小型化、智能成为了发展趋势，而智能化必不可少的就是操作系统，因此嵌入式系统已成为计算机领域的一个重要组成部分，并成今年来新兴的研究热点。嵌入式系统的应用现在广泛应用在了高级引擎管理、保安系统、机顶盒、便携计算机和高档打印机等设备。本文通过对嵌入式智能手持设备操作系统的分析研究以及根据不同CPU对内核以及u-boot的修改，来对嵌入式系统进行研究。本文概括性的描述了嵌入式系统的概念、发展与特征，介绍了ARMS3C2440开发板的硬件核心——ARM920T嵌入式处理器。同时详细论述了了linux2.6.13内核的源文件结构、功能裁剪、配置文件的修改、内核交叉编译过程以及内核在基于S3C2440处理器开发板上进行移植的关键问题等。还有对引导装载程序u-boot的源文件对S3C2440的支持修改以及编译移植过程。关键词Linux；交叉编译；移植；U-boot辽宁科技大学毕业设计（论文）第II页AbstractAlongwiththeInternetdevelopmentandthelatterPCtime'sarrival,Miniaturizationofelectronicproducts,smartbecameatrendandthatisessentialtointelligentoperatingsystem,sotheembeddedsystemhasbecomethecomputerdomainaimportantcomponent,combinestomakeorbecomecomestheemergingresearchhotspotthisyear.Applicationofembeddedsystemsisnowwidelyusedinadvancedenginemanagement,securitysystems,set-topboxes,portablecomputersandhigh-endprintersandotherdevices.Basedontheembeddedoperatingsystem,smarthandhelddevicesaswellastheanalysisofthedifferentCPUcores,aswellaschangestou-bootinordertoconductastudyonembeddedsystems.Describesthegeneralconceptofembeddedsystems,thedevelopmentandthecharacteristicintroducedARMS3C2440,whichisthedevelopmentboardhardwarecore--ARM920Tembeddedprocessor.Simultaneously,discussedindetailthekernelsourcefileslinux2.6.13structureandfunctionofcutting,themodifiedconfigurationfile,theprocessofcross-compilingthekernelandthekernelS3C2440processorbaseddevelopmentboardtocarryoutkeyissuessuchastransplants.Thereareprocedurestoguidetheloadingoftheu-bootsourcefilestosupportarevisionoftheS3C2440andthetransplantprocess.KeywordsLinux;CrossCompiler;Transplant;U-boot辽宁科技大学毕业设计（论文）第III页目录摘要........................................................................................................................................IAbstract.................................................................................................................................II第1章绪论.........................................................................................................................11.1引言...........................................................................................................................11.2国内外技术现状.......................................................................................................11.3论文任务和背景.......................................................................................................2第2章嵌入式系统概述.....................................................................................................32.1什么是嵌入式系统...................................................................................................32.1.1定义....................................................................................................................32.1.2嵌入式系统与通用计算机系统的区别............................................................32.1.3嵌入式系统结构和组成....................................................................................42.1.4嵌入式系统的开发过程....................................................................................52.2当前主要的嵌入式操作系统...................................................................................62.2.1商用嵌入式操作系统........................................................................................62.2.2免费嵌入式操作系统........................................................................................72.3嵌入式Linux系统概述............................................................................................72.3.1嵌入式Linux的特点.........................................................................................82.3.2主流嵌入式Linux系统.....................................................................................82.3.3嵌入式系统的发展趋势....................................................................................9第3章ARM及QT2440EARM920T硬件平台..............................................................103.1ARM处理器概述...................................................................................................103.1.1ARM微处理器的应用领域............................................................................103.1.2ARM微处理器的寄存器结构........................................................................113.1.3ARM微处理器运行模式................................................................................113.2ARM9处理器.........................................................................................................123.3QT2440EARM920T开发板介绍..........................................................................12第4章Linux内核分析......................................................................................................144.1操作系统内核功能构成.........................................................................................14辽宁科技大学毕业设计（论文）第IV页4.2Linux的运行状态...................................................................................................154.2.1内核态..............................................................................................................154.2.2用户态............................................................