学士学位论文--基于arm9的linux操作系统移植.doc

基于ARM9的LINUX操作系统移植TransplantationofLinuxOperationSystemBasedonARM9Ⅰ摘要随着电子技术的不断更新，嵌入式已经涉及到各行各业了，在智能家电，数字移动终端等这些行业嵌入式软件开发的需求下，嵌入式集成开发环境已经成为目前嵌入式系统发展的趋势。Linux作为优秀的开源操作系统软件被广泛应用到嵌入式操作系统中，它的实用性，可移植性，支持大容量的内存，MMU（微控制器）和I/O系统等得到了体现。本次设计主要研究了嵌入式Linux系统从PC机向开发板上移植的过程，硬件平台是基于CPU：三星S3C2440A，采用ARM920T内核，主频400MHZ。本文介绍了嵌入式系统的概念和现状以及嵌入式系统的开发模式，介绍了内核启动流程，对Bootloader启动进行了分析，移植了Linux内核，移植了文件系统yaffs以及自己的LED程序移植。以上烧写的文件均是官网下载的，这样可以使得Linux在开发板上更流畅的运行。本次设计成功的将嵌入式Linux系统移植到了FL2440开发板，文件系统运行正常，可通过触摸屏进行操作，LED程序调试成功，并在开发板上得到了运行结果。对以后Linux开发打下了很好的基础。关键词：嵌入式系统LinuxBootloader文件系统ⅡAbstractAlongwiththecontinuousrenewalofelectronictechnology,thedevelopmentofembeddedsystemhasbecomethemainstreamofscienceandtechnology,undertherequirementsofembeddedsoftwaredevelopmentintheintelligenthomeappliance,digitalmobileindustry,theembeddedintegrateddevelopmentenvironmenthasbecomethetrendofthedevelopmentoftheembeddedsystematpresent.Linuxasexcellentopensourceoperatingsystemsoftwarehasbeenwidelyappliedtoembeddedoperatingsystem,whosefeataressuchofpracticalapplicability,portability,supportinglargecapacitymemory,MMU(microcontroller)andI/Osystemhavebeenreflected.MainlyfromthePCtotransplantprocesstheembeddedLinuxsystemarestudiedonthedevelopmentboard,hardwareplatformisbasedonCPU:samsungS3C2440A,adoptedARM920Tkernel,dominantfrequency400MHZ.Thispaperintroducestheconceptofembeddedsystemandthestatusquoanddevelopmentmodeoftheembeddedsystem,thekernelbootprocessisintroduced,theBootloaderstartupwasanalyzed,andthetransplantationoftheLinuxkernel,transplantyaffsfilesystemaswellastheirownLEDtransplantprogram.Theabovewritingfilesaretheofficialwebsitetodownload,soyoucanmaketheLinuxmoresmoothlyinthedevelopmentboardtorun.ThedesignsuccessfulportingembeddedLinuxsystemtoFL2440developmentboard,filesystemrunningnormal,canbeoperatedbytouchscreen,LEDprogramdebuggingissuccessful,andgetstheresultsonthedevelopmentboard.ForfuturestudyLinuxdevelopmentlaidagoodfoundation.Keywords:embeddedsystemLinuxBootloaderfilesystemⅢ目录摘要IAbstractII绪论11嵌入式Linux系统