??????????Android?豸????????????????????
????Android???????????????????
????????Linux????
??????????linux?????Android??linux???????????
??????????????????
????????Zygote??
????????X86???ARM linux??
????????init.rc?
??????????????
????????????Android???????????????????e???????????????????Android?????????????????????????????Щ????????
????Android?????????Linux????????????x86??x86?????е????intel 8086 CPU???????????????????????linux??????????????????????е?Android?豸??????????ARM????????ARM ?????????????????????ARM??????????????????Xolo?豸(http://xolo.in/xolo-x900-features)??Xolo??????趯1.6GHz x86????????Android?豸????????豸???????linux??ARM?豸???????????????汾????????Щ???????????У????????Android?豸??????????????linux?????????????????linux????????????
?????????μ???????Android?豸????????2??衣
????Android???????/????
?????????????????????????
????????????￡?????о???????????????????????ROM???????С?????????????RAM???????С?
???????????????????
????????????????Android???????????????????С?????????????????е??????????????????????????????о?????豸??????????ú??????????????????redboot??uboot??qi bootloader??????????????????????????Android????????????????????????OEM??????????????????????????
??????????????????????С????????Σ????????RAM??????????????????????????Σ????????????????硢????????Щ???????????????????????????????????????????????ò???????????????????????
????Android?????????????ootableootloaderlegacyusbloader?????
????????????????????????????????????????
????init.s??????????????BBS?Σ?????main.c??_main()??????
????main.c??????????????????塢??????????????????linux?????
???????????Android?????????????????????
???????????????
????Android?????????linux?????????????????????????????楨???????洢????????б?????????????????????????????????????????????”init”???????????root????????????????????
???????????init????
????init???????????????????????root?????????н??????????init?????????????Σ???????????????/sys??/dev??/proc??????????init.rc?????
????init?????????/system/core/init?????
????init.rc?????????/system/core/rootdir/init.rc?????
????readme.txt??????/system/core/init/readme.txt?????
????????init.rc?????Android????????????????????Android?У????????Android??????????
????Android?????????????????????????????Actions??????????Commands????????Services???????????Options???????
????Action???????????????????????????????????????????????????????????