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1、基于ARM9的LINUX操作系统移植TransplantationofLinuxOperationSystemBasedonARM9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
2、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
3、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AbstractAlongwiththecontinuousrenewalofelectronictechnology,thedevelopmentofembeddedsystemhasbecomethemainstreamofscienceandtechnology,undertherequirementsofembeddedsoftwaredevelopmentintheintel
4、ligenthomeappliance,digitalmobileindustry,theembeddedintegrateddevelopmentenvironmenthasbecomethetrendofthedevelopmentoftheembeddedsystematpresent.Linuxasexcellentopensourceoperatingsystemsoftwarehasbeenwidelyappliedtoembeddedoperatingsystem,whosefea
5、taressuchofpracticalapplicability,portability,supportinglargecapacitymemory,MMU(microcontroller)andI/Osystemhavebeenreflected.MainlyfromthePCtotransplantprocesstheembeddedLinuxsystemarestudiedonthedevelopmentboard,hardwareplatformisbasedonCPU:samsung
6、S3C2440A,adoptedARM920Tkernel,dominantfrequency400MHZ.Thispaperintroducestheconceptofembeddedsystemandthestatusquoanddevelopmentmodeoftheembeddedsystem,thekernelbootprocessisintroduced,theBootloaderstartupwasanalyzed,andthetransplantationoftheLinuxke
7、rnel,transplantyaffsfilesystemaswellastheirownLEDtransplantprogram.Theabovewritingfilesaretheofficialwebsitetodownload,soyoucanmaketheLinuxmoresmoothlyinthedevelopmentboardtorun.ThedesignsuccessfulportingembeddedLinuxsystemtoFL2440developmentboard,fi
8、lesystemrunningnormal,canbeoperatedbytouchscreen,LEDprogramdebuggingissuccessful,andgetstheresultsonthedevelopmentboard.ForfuturestudyLinuxdevelopmentlaidagoodfoundation.Keywords:embeddedsystemLinuxBootloaderfilesystem目录摘要IAbstractII绪论11嵌入式Linux系统构成和