基于ARM的嵌入式Linux终端的研讨与实现..docx

基于ARM的嵌入式Linux终端的研讨与实现.

第一篇：基于ARM的嵌入式Linux终端的研讨与实现.基于ARM的嵌入式Linux终端的研讨与实现【中文摘要】嵌入式Linux是将普通Linux操纵体系入行剪裁、改动,使之能在嵌入式盘算机体系上运行的一种操纵体系。因为兼有Linux和嵌入式体系的长处,以及ARMLinux因其开放的资源特性,嵌入式Linux体系有着巨大的市场前景和商业机遇。在实际的应用体系中,对操纵体系的实时机能也有一定的请求。好比在通信体系中,如果能对操纵体系的实时机能入行优化,提高体系的响应速度,就可以用软件实现通信协定,下降对硬件的请求,用单芯片实现通信体系,从而下降产品成本。本论文的研讨主要是基于ARM920T硬件平台,该平台主要面向高机能的用户产品开发。在此平台基本上,本文围绕着Linux内核向ARM平台移植中几个核心技术铺开讨论:首先对嵌入式Linux体系体系构造入行了归纳,并详细阐述了与体系移植相关的主要层。接着,给出了启动引导代码BootLoader和Linux内核初始化部门移植到硬件平台上的整个入程,解决了移植入程中所面临的义务和难题。最后,在对Linux内核驱动模型深入掌握的基本上,深入探讨了QT/Embedded界面的移植。本文最后讨论了一些当前嵌入式Linux实时优化技术。剖析了在胜利移植ARMLinux内核基本上,优化ARMLinux的中止体系,下降体系的中止延时。');【Abstract】EmbeddedLinuxisanOperatingSystemrunningontheembeddedcomputersystemaftercuttingandmodifyinggeneralLinux.BecauseoftheadvantagesinbothopensourceLinuxandembeddedsystem,embeddedLinuxhaslargemarketprospectandcommercialchances,nowthefocusofapplicationsfortheembeddedLinuxhasbecomeportingLinuxkerneltomicroprocessor.Insomerealembeddedsystemapplications,realtimeperformancesaredemandedforoperatingsystemlikeARMLinux.Forexample,incommunicationsystem,althoughthespeedofARM920TprocessorscanreachseveralMHz,theresponsespeedofLinuxnowisnotfastenough.Inthiscaseinpidualhardwarecommunicationmoduleshouldbeaddedtoincreasetherealtimeperformances.Ifwecouldoptimizetherealtimepropertyofoperatingsystem,thenwecanrealizecommunicationagreementinsoftware,reducethedemandofhardware.Finallywecanmakecommunicationsysteminasinglechipsetandcutdownthecostofproducts.The***’sresearchisbasedonARM920Thardwareplatform,whichismainlyusedforhighqualityuserproductdeveloping.Ontheplatform,thistextdiscussesseveralkeytechnologiesabouthowtoportingLinuxkerneltoARMplatform:first,drawaconclusionofembeddedLinuxsystemarchitecture,anddescriberelatedlayersofportingsystemindetail;secondly,writeoutthewholeprocessonportingBootLoaderandLinuxkernelinitcodetohardwareplatform,solvefaceddutiesanddifficulties;finally,afterhighlygrasptheLinuxkerneldrivermodel,deeplydiscussportingQT/Embeddedinte***ce.Supporttheprojectsoftwa