framework方案

编译调试

adb root & adb remount

单独编译frameworks mmm frameworks/base/services/

adb root & adb remount
adb push Z:\oywj\905\out\target\product\u202\system\framework\services.core.jar /system/framework
adb push Z:\oywj\905\out\target\product\u202\system\framework\services.jar /system/framework
adb push Z:\oywj\905\out\target\product\u202\system\framework\services.jar.prof /system/framework
adb push Z:\oywj\905\out\target\product\u202\system\framework\oat\arm\services.art /system/framework/oat/arm/
adb push Z:\oywj\905\out\target\product\u202\system\framework\oat\arm\services.core.odex /system/framework/oat/arm/
adb push Z:\oywj\905\out\target\product\u202\system\framework\oat\arm\services.core.vdex /system/framework/oat/arm/
adb push Z:\oywj\905\out\target\product\u202\system\framework\oat\arm\services.odex /system/framework/oat/arm/
adb push Z:\oywj\905\out\target\product\u202\system\framework\oat\arm\services.vdex /system/framework/oat/arm/
adb reboot

将文件push进取之后，重启生效

单独编译mmm frameworks/base/core/res/

adb push Z:\oywj\905\out\target\product\u202\system\framework\framework-res.apk /system/framework

SettingsProvider 部分编译 mmma frameworks/base/packages/SettingsProvider/

adb push Z:\oywj\905\out\target\product\u202\system\priv-app\SettingsProvider /system/priv-app

恢复出厂设置来重新创建DataBaseHelper.java settings.db数据， loadSettings(db); System、Secure、Global

cat /dev/block/env   Env值
cat /proc/sys/kernel/printk      7       4       1       7   //打印控制台日志等级

系统方案

Android O 之后获取保存 Wifi 密码，解析/data/misc/wifi/WifiConfigStore.xml文件

/**
*  传入需要查询WIfi的名称(ssid), 项目是已经连接的Wifi
*/
private String readWifiPreSharedKey(String ssid){
    Process process = null;
    DataOutputStream dataOutputStream = null;
    InputStream inputStream = null;
    StringBuffer wifiConf = new StringBuffer();
    try {
        process = Runtime.getRuntime().exec("su");
        dataOutputStream = new DataOutputStream(process.getOutputStream());
        inputStream = process.getInputStream();
        dataOutputStream
                .writeBytes("cat /data/misc/wifi/WifiConfigStore.xml\n");
        dataOutputStream.writeBytes("exit\n");
        dataOutputStream.flush();
        XmlPullParser xmlPullParser = Xml.newPullParser();
        xmlPullParser.setInput(inputStream,"UTF-8");
        int eventType = xmlPullParser.getEventType();
        boolean isWifiInfo = false;
        boolean isConnectWifi = false;
        while(eventType != XmlPullParser.END_DOCUMENT){
            switch (eventType) {
                case XmlPullParser.START_DOCUMENT:
                    break;
                case XmlPullParser.START_TAG:
                    String startTag = xmlPullParser.getName();
                    if(startTag.equals("WifiConfiguration")){
                        isWifiInfo = true;
                        break;
                    }
                    if(isWifiInfo) {
                        String name = xmlPullParser.getAttributeValue(null, "name");
                        if ("SSID".equals(name)) {
                            String _ssid = xmlPullParser.nextText();
                            if (_ssid.substring(1,_ssid.length() - 1).equals(ssid)) {
                                isConnectWifi = true;
                                break;
                            }
                        } else if (isConnectWifi && "PreSharedKey".equals(name)) {
                            String PreSharedKey = xmlPullParser.nextText();

                            return PreSharedKey.substring(1,PreSharedKey.length() - 1);
                        }
                    }
                    break;
                case XmlPullParser.END_TAG:/**【元素结束事件】**/
                    String endTag = xmlPullParser.getName();
                    if(endTag.equals("WifiConfiguration"))
                        isWifiInfo = false;
                    break;
            }
            eventType = xmlPullParser.next();
        }
        process.waitFor();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            if (dataOutputStream != null) {
                dataOutputStream.close();
            }
            if (inputStream != null) {
                inputStream.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        process.destroy();
    }
    return "";
}

静默开机方案

Amlogic905平台 9.0

---- setDisplayInfoOverrideFromWindowManagerInternal

涉及git仓库：bootloader、common(kernel)、Customer、device、frameworks、packages

屏蔽Logo

bootloader/uboot-repo/bl33/board/amlogic/g12a_u202_v1/g12a_u202_v1.c

setenv("board_defined_bootup", "bootup_D3"); -> setenv("board_defined_bootup", "bootup_quiescent");

设置图片名称用静默(全黑)图片替换  device/amlogic/u202/logo_img_files/bootup_D3.bmp
           
bootloader/uboot-repo/bl33/common/cmd_imgread.c     

 [do_image_read_pic]  ----  bootupOutmode[1] = picName = getenv("board_defined_bootup");
 
SystemControlManager.setenv

屏蔽开机动画

property: debug.sf.nobootanimation=1

*. 屏蔽开机动画之后屏幕唤醒

--- a/base/services/core/java/com/android/server/power/PowerManagerService.java
+++ b/base/services/core/java/com/android/server/power/PowerManagerService.java

-            mWakefulness = WAKEFULNESS_AWAKE;
-
+            mWakefulness = WAKEFULNESS_ASLEEP;
+            mHandler.postDelayed(new Runnable() {
+                @Override
+                public void run() {
+                    Slog.d(TAG, "PowerManagerService [wakeUp] delay 15s");
+                    //new BinderService().wakeUp(SystemClock.uptimeMillis(), "android.policy:POWER", "android");
+                    wakeUpInternal(SystemClock.uptimeMillis(), "android.policy:POWER",
+                                         Process.SYSTEM_UID, "android",Process.SYSTEM_UID);
+                    goToSleepInternal(SystemClock.uptimeMillis(), PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON
+                                         , 0,Process.SYSTEM_UID);
+                }
+            },15 * 1000);

*. 屏蔽背光

1) logo 背光 在bootloader层

2) 开机动画背光

3) Android系统背光

Hisi3751V811平台 8.

涉及仓库 packages、frameworks、Customer、bigfish、sdk

和Amlogic不同，海思并没有提供设置Boot Env的接口，不仅没有接口而且背光控制完全在Boot中(fastboot).

海思提供通过分区偏移地址读写接口 hi_flash.h

hFlash = HI_Flash_OpenByName(CUSTOM_DEVICE_NAME);
if(HI_INVALID_HANDLE != hFlash
{
    stMtdInfo.u32Offset = CUSTOM_SLIENT_BOOT_OFFFSET;
    (HI_VOID)HI_Flash_GetInfo(hFlash, &stFlashInfo);
    stMtdInfo.u32Size = stFlashInfo.PartSize;
}
u32ReadLenth = stFlashInfo.PageSize > CUSTOM_DEF_DEVPARAM_SIZE ? stFlashInfo.PageSize : CUSTOM_DEF_DEVPARAM_SIZE;
if (0 == u32ReadLenth)
{
    CUSTOM_LOG("ERR: u32ReadLenth, can not pass 0 to malloc\n");
    return HI_FAILURE;
}
pBuf = (HI_U8 *)malloc(u32ReadLenth);
if (HI_NULL == pBuf)
{
    CUSTOM_LOG("malloc buf err!");
    s32Ret = HI_FAILURE;
    goto FLASH_CLOSE;
}
memset(pBuf, 0x0, u32ReadLenth);
ReadLen = HI_Flash_Read(hFlash, (HI_U64)stMtdInfo.u32Offset, (HI_U8 *)pBuf, u32ReadLenth, HI_FLASH_RW_FLAG_RAW);
if(ReadLen < 0)
{
    CUSTOM_LOG("ERR: HI_Flash_Read!");
    s32Ret = HI_FAILURE;
    goto FREE_BUF;
}
u32SlientBootStatus = ((HI_CUSTOM_DEV_PARAM_S*)pBuf)->u32PanelIndex;
FREE_BUF:
    if (HI_NULL != pBuf)
    {
        free(pBuf);
    }
FLASH_CLOSE:
    HI_Flash_Close(hFlash);
RET:
    return s32Ret;

获取值设置背光 msp/drv/panel/drv_panel_power.c kernel 层对msp做软连接

PANEL_DRV_SetPanelBlPowerTimer接口内通过获取u32SlientBootStatus判断是否为静默开机，从而屏蔽背光流程

C：Picture.cpp 开机启动时和Boot同步 enableBacklight
Java：PictureImpl.java 给Java曾的接口

屏蔽串口打印

u202:/proc/sys/kernel $ cat printk
7       4       1       7

+# -- 设置log等级 -- #
+if [[ " $TYPE_LOG_LEVEL" = "CONSOLE_LOGLEVEL_SILENT" || "$ TYPE_LOG_LEVEL" = "CONSOLE_LOGLEVEL_MIN" || " $TYPE_LOG_LEVEL" = "CONSOLE_LOGLEVEL_QUIET" || "$ TYPE_LOG_LEVEL" = "CONSOLE_LOGLEVEL_DEFAULT" || " $TYPE_LOG_LEVEL" = "CONSOLE_LOGLEVEL_DEBUG" || "$ TYPE_LOG_LEVEL" = "CONSOLE_LOGLEVEL_MOTORMOUTH" ]];then

echo "$A905D3_CONSOLE_LOGLEVEL"
sed -i 's/CONSOLE_LOGLEVEL_DEFAULT,.*/*\ console_loglevel\ *//' ${TYPE_LOG_LEVEL}', \/\*\ console_loglevel\ \*\//g'$ A905D3_CONSOLE_LOGLEVEL
+fi

uboot-repo/bl33/board/amlogic/configs/g12a_u202_v1.h
Customer
common
kernel/printk/printk.c

GoolgePlay

android.software.google_atv.xml > vendor