先看通过Powermanager方式进入recovery,powermanager 调用reboot函数,最终往寄存器中写入了一个recovery标志,在机器重启时在BootLoader中读取该标志,然后进入到recovery模式,与adb reboot recovery 方式类似,两者都是通过修改sys.powerctl的值来达到目的 2、组合按键 组合按键的方式比较简单,在机器重启进入BootLoader时,会先检查...
“recovery\n”之后的部分,是/cache/recovery/command支持的命令。可以将其理解为Recovery操作过程中对命令操作的备份。 Recovery操作过程为:先读取BCB然后读取/cache/recovery/command,然后将二者重新写回BCB,这样在进入Main system之前,确保操作被执行。 在操作之后进入Main system之前,Recovery又会清空BCB的command域和re...
In the Android recovery mode interface, you can see ten functional options, which include Reboot system now, Reboot to bootloader, Apply update from ADB, Apply update from SD, Wipe data/Factory reset, Wipe cache partition, Mount / System, View recovery logs, Run graphics test, Power off. If...
先看下FirstStageMain这个函数:在system/core/init/first_stage_init.cpp中 intFirstStageMain(intargc,char**argv){...//创建和挂载启动所需的文件目录CHECKCALL(mount("tmpfs","/dev","tmpfs",MS_NOSUID,"mode=0755"));CHECKCALL(mkdir("/dev/pts",0755));CHECKCALL(mkdir("/dev/socket",0755));CHECK...
第一步:进入Recovery模式 1.建议您用手指同时按音量上键、音量下键、电源键这三个键开机,屏幕显示“recovery mode„” 2. 稍等10秒,手机上会出现“请按Home键(手机下方中间键),查看详情” 3. 按Home键, 按3次音量下键,选中最后一行“wipe cache partition”,按电源键。屏幕自动跳转一页,再按2次音量下键...
在恢复出厂设置时,显示的图片和文字比较小,需要调大,修改build/make/core/Makefile中的recovery_density即可。 把默认的mdpi改成xxhdpi。 # Set recovery_density to a density bucket based on TARGET_SCREEN_DENSITY, PRODUCT_AAPT_PREF_CONFIG,# or mdpi, in order of preference. We support both specific buc...
//startHomeActivity方法 - ActivityStartController.java void startHomeActivity(Intent intent, ActivityInfo aInfo, String reason, TaskDisplayArea taskDisplayArea) { //ActivityOptions一系列参数 final ActivityOptions options = ActivityOptions.makeBasic(); options.setLaunchWindowingMode(WINDOWING_MODE_FULLSCREEN)...
recovery模式下log 打印 有两种方式打印log:printf 和 ui->printui->print:t调用screen_ui的print函数,将信息显示在屏幕上 printf输出到stdout,stdout重定向到下面文件: freopen(TEMPORARY_LOG_FILE,"a",stdout); setbuf(stdout, NULL); freopen(TEMPORARY_LOG_FILE,"a",stderr); setbuf(stderr, NULL); ...
In addition to add,Android Recovery modescreen by default force your mobile LCD screen to be always ON, while you finally decide the option you want to pick it up from here. So, if you are sleeping for e.g., and this Signal bug all of the sudden happens while you are sleeping, you...
#ifdef CONFIG_ANDROID_RECOVERY check_recovery_mode(); #endif /*main_loop() can return to retry autoboot, if so just run it again.*/ for(;;) { main_loop (); } } init_sequence是一个函数结构体指针,里面存放的是一些必备的初始化函数,其代码如下: ...