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            当前位置 : IT培训网 > 移动开发 > android > Android培训必知 Android手机启动过程经历了什么

            Android培训必知 Android手机启动过程经历了什么

            时间:2015-08-17 10:21:59  来源:Android培训网  作者:IT培训网  已有:名学员访问该课程
            标签(Tag):   Android培训(13)
            要了解Android手机启动过程,我们先来了解一下基于linux系统的电脑从按下电源键的那一刻起,发生了什么,这样类比可以更好的理解Android手机的启动过程。

            想要成为一个Android开发者,参加Android培训时候肯定要了解Android的整个系统运行过程,所以IT培训网天下棋牌下载总结一下Android手机启动过程经历了什么。广大Android手机爱好者也可以了解了解。

            YAOLEJIEAndroidSHOUJIQIDONGGUOCHENG,WOMENXIANLAILEJIEYIXIAJIYUlinuxXITONGDEDIANNAOCONGANXIADIANYUANJIANDENEIYIKEQI,FASHENGLESHENME,ZHEIYANGLEIBIKEYIGENGHAODELIJIEAndroidSHOUJIDEQIDONGGUOCHENG。

            Android培训必知 Android手机启动过程经历了什么_wescliffe.com

            基于Linux的pc启动过程

            WOMENDOUZHIDAO,SUOYOUDECHENGXURUANJIANBAOKUOCAOZUOXITONGDOUSHIYUNXINGZAINEICUNZHONGDE,RANERWOMENDECAOZUOXITONGYIBANSHICUNFANGZAIYINGPANSHANGDE,DANGWOMENANXIAKAIJIJIANDESHIHOU,CISHINEICUNZHONGSHENMECHENGXUYEMEIYOU,YINCIXUYAOJIEZHUMOUZHONGFANGSHI,JIANGCAOZUOXITONGJIAZAIDAONEICUNZHONG,ERWANCHENGZHEIXIANGRENWUDEJIUSHIBIOS。

            天下棋牌下载 ZHUANGGUOXITONGDERENYIDINGZHIDAOBIOSZHEIGEDONGXI,NEIMETAJIUJINGSHISHENMENI?

            BIOS:Basic Input/Output System(JIBENSHURUSHUCHUXITONG),ZAIIBM PCJIANRONGXITONGSHANG,SHIYIZHONGYEJIEBIAOZHUNDEGUJIANJIEKOU(LAIZIWEIJIBAIKE)。YOUDIANNANYILIJIE,QISHIBIOSSHIWOMENDIANNAOQIDONGSHIJIAZAIDEDIYIGECHENGXU,ZHEIGECHENGXUBUSHIYOUJavaYUYANBIANXIEYEBUSHIYOUCYUYANBIANXIE,YIBANSHIHUIBIANCHENGXU。

            BIOSCHENGXUGUHUAZAIZHUBANSHANGDEYIKUAIXINPIANSHANG,SHILIANJIEJISUANJIYINGJIANYUCAOZUOXITONGDEQIAOLIANG,TABAOCUNZHEJISUANJIZUIZHONGYAODEJIBENSHURUSHUCHUDECHENGXU、KAIJIHOUZIJIANCHENGXUHEXITONGZIQIDONGCHENGXU。

            天下棋牌下载 NEIMEWENTILAILE,BIOSCHENGXUYOUSHIZENMEQIDONGDE?BIOSDEQIDONG,SHIYOUYINGJIANWANCHENGDE,Intel 80x86

            XILIEDEcpuDEYINGJIANDOUSHEJIWEIJIADIAN(JIKAIJISHUNJIAN)JIUJINRU16WEISHIMOSHIZHUANGTAIYUNXING,CISHIJIANGcpuDEYINGJIANLUOJISHEJIWEIQIANGXINGJIANGCSDEZHISHEZHIWEI0xFFFF,IPDEZHISHEZHIWEI0x0000,ZHEIYANGCS:IPJIUZHIXIANGLE0xFFFF0ZHEIGEWEIZHI,ERZHEIGEWEIZHIJIUSHIBIOSCHENGXUDERUKOUDIZHI。

            YINCIZHEISHIYIGEYINGJIANCHANGSHANGZHIJIANDEYUEDING,SUOYOUDEBIOSCHENGXURUKOUDIZHIJUNWEI0xFFFF0,ZHEIYANGZAIKAIJIDESHIHOU,JIUZHAODAOZHEIGEDIZHI,RUGUOGAIDIZHIBINGMEIYOUDAIMADUAN,NEIMEJISUANJIJIANGHUISIJI,RUGUOZHEIGEDIZHICHUYOUDAIMADUAN,JIANGHUIZHIXINGZHEIGEDAIMADUAN,BINGYOUCIZHIXINGXIAQU,JIBIOSCHENGXUKAISHIQIDONG。

            CS:DAIMADUANJICUNQI,CUNZAIYUCPUZHONG,ZHIXIANGCPUDANGQIANZHIXINGDAIMAZAINEICUNZHONGSUOZAIDEQUYU。

            天下棋牌下载 IP:ZHILINGJICUNQI,CUNZAIYUCPUZHONG,JILUJIANGYAOZHIXINGDEZHILINGZAIDAIMADUANNEIDEPIANYIDIZHI,YUCSZUHEJIWEIJIANGYAOZHIXINGDEZHILINGDENEICUNDIZHI。

            DANGBIOSCHENGXUQIDONGSHI,JIUHUIJIANCEYINGJIANSHEBEI,BIRUWOMENDEXIANKA、NEICUNDENGXINXI。BIOSHUIZAINEICUNZHONGJIANLIZHONGDUANXIANGLIANGBIAOHEZHONGDUANFUWUCHENGXU。ZHONGDUANXIANGLIANGBIAOZHONGYOU256GEZHONGDUANXIANGLIANG,MEIGEZHONGDUANXIANGLIANGZHAN4GEZIJIE,MEIGEZHONGDUANXIANGLIANGZHIXIANGYIGEZHONGDUANFUWUCHENGXU,ZHEIXIEZHONGDUANFUWUCHENGXUWANCHENGLEJIANGCAOZUOXITONGYOUYINGPANJIAZAIDAONEICUNZHONGDERENWU。

            JIYUlinuxDECAOZUOXITONGERYAN,JISUANJIJIANGFENSANPIZHUCIJIAZAICAOZUOXITONGDEDAIMA,DIYIPIYOUBIOSZHONGDUANint 0x19JIANGDIYISHANQUbootsectDENEIRONGJIAZAIDAONEICUN;DIERPIHEDISANPIZAIbootsectDEZHIHUIXIA,FENBIEJIAZAIHOUMIANSHANQUDENEIRONGDAONEICUNZHONG。

            JINGGUOZHIXINGYIXILIEDEBIOSDAIMAHOU,JISUANJIWANCHENGLEZIJIANDENGCAOZUO,JISUANJIYINGJIANTIXIHUIYUBIOSLIANHECAOZUO,RANGcpuJIESHOUDAOYIGEint 0x19ZHONGDUAN,cpuJIESHOUDAOZHEIGEZHONGDUANHOU,HUILIJIZAIZHONGDUANXIANGLIANGBIAOZHONGZHAODAOint 0x19ZHONGDUANXIANGLIANG,CISHIHUIZHAODAODUIYINGDEZHONGDUANFUWUCHENGXU,BINGYOUGAIZHONGDUANFUWUCHENGXUJIANGYINGPANZHONGDIYIGESHANQUDEYINDAOCHENGXUJIAZAIDAONEICUNZHONGDEZHIDINGWEIZHI。

            天下棋牌下载 SUIHOU,ZAIYINDAOCHENGXUDEZUOYONGXIA,LUXUJIANGCAOZUOXITONGDEQITACHENGXUZAIRUNEICUN,WANCHENGSHIMOSHIDAOBAOHUMOSHIDEZHUANBIAN,WEIZHIXINGCAOZUOXITONGDERUKOUHANSHUmainZUOZHUNBEI,HOUMIANJIUSHICAOZUOXITONGDECHUSHIHUAGONGZUOLE,ZUIHOUWANCHENGJISUANJIDEQIDONG。

            Android手机的启动过程

            AndroidXITONGSUIRANYESHIJIYUlinuxXITONGDE,DANSHIYOUYUAndroidSHUYUQIANRUSHISHEBEI,BINGMEIYOUXIANGpcNEIYANGDEBIOSCHENGXU。

            QUERDAIZHIDESHIBootloader——XITONGQIDONGJIAZAIQI。TALEISIYUBIOS,ZAIXITONGJIAZAIQIAN,YONGYICHUSHIHUAYINGJIANSHEBEI,JIANLINEICUNKONGJIANDEYINGXIANGTU,WEIZUIZHONGDIAOYONGXITONGNEIHEZHUNBEIHAOHUANJING。

            天下棋牌下载 ZAIAndroidLIMEIYOUYINGPAN,ERSHIROM,TALEISIYUYINGPANCUNFANGCAOZUOXITONG,YONGHUCHENGXUDENG。ROMGENYINGPANYIYANGYEHUIHUAFENWEIBUTONGDEQUYU,YONGYUFANGZHIBUTONGDECHENGXU,ZAIAndroidZHONGZHUYAOHUAFENWEIYIXIAJIGEFENQU:

            Android培训必知 Android手机启动过程经历了什么_wescliffe.com

            天下棋牌下载 NEIMEBootloaderSHIRUHEBEIJIAZAIDENI?WOMENKEYIXIANGDAO,YINGGAIGENpcYIYANG,DANGKAIJIJIADIANDESHIHOU,cpuHUICONGcpuZHIZAOCHANGSHANGYUSHEDEDIZHISHANGQUZHILING,ZHEIGEDIZHISHIGECHANGSHANGYUEDINGSUCHENGDE,LEISIYUSHANGMIAN80x86JIAGOULIDE0xFFFF0DIZHI,YINCIAndroidSHOUJIHUIJIANGGUTAICUNCHUSHEBEIROMYUXIANYINGSHEDAOGAIDIZHISHANG,DANGKAIJIJIADIANDESHIHOU,cpuJIUHUICONGGAIDIZHIZHIXING/bootFENQUXIADEBootloaderCHENGXU,ZAIRUlinuxNEIHEDAORAMZHONG。

            DANGlinuxNEIHEQIDONGHOUHUICHUSHIHUAGEZHONGRUANYINGJIANHUANJING,JIAZAIQUDONGCHENGXU,GUAZAIGENWENJIANXITONG,BINGKAISHIZHIXINGGENWENJIANXITONGDEinitCHENGXU,initCHENGXUSHIAndroidQIDONGGUOCHENGZHONGZUIZHONGYAODEHEXINCHENGXU。

            initJINCHENGSHIAndroidXITONGZHONGYONGHUJINCHENGDEBIZUJINCHENG。initJINCHENGHUIQIDONGGEZHONGXITONGBENDIFUWU,RU:Media Server、Service Manager、bootanim(KAIJIDONGHUA)DENG。initJINCHENGHUIZAIJIEXIinit.rcWENJIANHOUforkCHUZygote,ERZygoteSHISUOYOUJavaJINCHENGDEFUJINCHENG,WOMENDEAppDOUSHIYOUZygote forkCHULAIDE。

            Zygote进程主要包含:

            Android培训必知 Android手机启动过程经历了什么_wescliffe.com

            SUIHOUZygoteJINCHENGHUIforkCHUSystem ServerJINCHENG,System ServerJINCHENGFUZEQIDONGHEGUANLIZHENGGEframework,BAOKUOActivity Manager,PowerManagerDENGFUWU。

            DANGSystem ServerJIANGXITONGFUWUQIDONGJIUXUHOU,JIUHUITONGZHIActivityManagerQIDONGSHOUGEAndroidCHENGXUHomeJIWOMENKANDAODEZHUOMIANCHENGXU。

            ZHEIJIUSHIAndroidSHOUJIKAIJIDAOKANDAOZHUOMIANCHENGXUZHONGJIANSUOJINGLIDEGUOCHENG,SUIRANZHIYOUDUANDUANDEJIMIAOZHONGSHIJIAN,DANSHIAndroidSHOUJIYEPAOLEYIGEMALASONGLE。AndroidPEIXUNDEXUEYUANMENLEJIELEZHEIGEGUOCHENGYEHUIDUIAndroidKAIFADEXUEXIDAYOUBANGZHU。

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