Android7.1关机充电启动流程及LED状态更新

最新推荐文章于 2025-03-29 18:38:55 发布

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最新推荐文章于 2025-03-29 18:38:55 发布 · 4.7k 阅读

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1, kernel command line: androidboot.mode = charger

2, command line androidboot.xxx 转换成 ro.boot.xxx

        /system/core/init/init.cpp
        main() -> process_kernel_cmdline() -> import_kernel_cmdline() -> import_kernel_nv()
        androidboot.mode => ro.boot.mode

3, ro.boot.mode => ro.bootmode

/system/core/init/init.cpp
main() -> export_kernel_boot_props()

4, /system/core/init/init.cpp: main()

    // Don't mount filesystems or start core system services in charger mode.
    std::string bootmode = property_get("ro.bootmode");
    if (bootmode == "charger") {
        am.QueueEventTrigger("charger");
&nbs