• 开机logo切换逻辑深入研究


    增加暗码命令切换开关机logo功能


    u-boot logo显示原理:
    1.————Little Kernel会在platform_early_init阶段首先会获取lcm params,其工作流
    程就是透过读id找到现在插入的LCM,根据LCM的分辨率申请相应大小的frame buffer
    并确定frame buffer起始地址
    2. 为logo.bin预留4M Ram
    3. 之后在platform_init阶段,直接将logo.bin载入到4M Ram中
    4, 完成载入后,在platform_init中mt_disp_show_boot_logo();会调用
    show_logo(0);完成第一张logo显示。其中的index=0代表在logo.bin中压缩的第一张
    图片,logo.bin中的图片压缩顺序可以察看文件
    mediatekcustomcommonlklogo ules.mk


    2.————4.2的kernel logo显示原理:
    Kernel logo的工作方式与U-boot logo不同,是透过init.rc中注册的
    boot_logo_updater service完成读取raw data文件,进行绘画的,所以在kernel
    logo只是经过了bmp向raw的转换,在目录mediatekcustomcommonlklogo下生成
    raw data 文件boot_logo。之后透过脚本文件将boot_logo文件搬移到
    out argetproductxxxxsystemmediaimages下,打包为system.img,download
    到手机种,并存放于/system/media/images目录下。


    3.————4.2对于ipo快速开机,请在目录mediatekexternalipodootlogo.cpp中的
    mt65xx_disp_show_boot_logo();做相应修改


    4.————4.4的kernel logo和ipo快速开机用的是同一个接口。
    在boot_logo_updater.c的main中与4.2的方法不同使用了show_kernel_logo函数调用
    显示了包在logo.bin中的kernel.logo,修改方法可以在alpsmediatekexternallibshowlogocharging_animation.cpp
    中对这部分代码进行尝试读取nv显示修改,kernel层的logoindex可以查看文件
    mediatekcustomcommonlklogo ules.mk中kernel.bmp的顺序
    void show_kernel_logo()
    {
        LOG_ANIM("[charging_animation: %s %d]show kernel logo, index = 38 ",__FUNCTION__,__LINE__);
        if (error_flag == 0) 
        {
            anim_show_logo(kernel_logo_position); 
        }    
    }    
    由于快速开关机部分alpsmediatekexternalipodootlogo.cpp
    也是使用了此接口,若添加,应该就可以做到暗码修改了。


    对于U-boot logo,只需要将不同分辨率的图片压缩至logo.bin中,在读取时根据不
    同的NVflag显示相应的图片即可
    而对于Kernel logo,我们需要将不同分辨率的boot_logo raw data文件生成出来并
    copy到手机中,boot_logo_updater根据不同的分辨率进行识别,读取相应的logo文
    件。在boot_logo_updater识别部分对NVflag进行判断,进而调用不同的boot_logo。






    一、主要修改文件:
    1.mediatek/external.git
    boot_logo_custom这部分代码在4.4上是没有编译的,所以不用增加这部分的编译机制
    这部分的logo是动画之前的那个logo,可以使用adb shell,cd 到/system/bin,执行
    boot_logo_updater查看这个logo具体是哪张图片




    diff --git a/boot_logo_updater/Android.mk b/boot_logo_updater/Android.mk
    index 5a28913..1b046f8 100755
    --- a/boot_logo_updater/Android.mk
    +++ b/boot_logo_updater/Android.mk
    @@ -66,3 +66,17 @@ LOCAL_SRC_FILES := custom/$(LOCAL_MODULE)
     
     include $(BUILD_PREBUILT)
     endif
    +############################################################
    +ifneq ($(strip $(MTK_PLATFORM)),)
    +include $(CLEAR_VARS)
    +
    +LOCAL_MODULE := boot_logo_custom
    +
    +LOCAL_MODULE_CLASS := DATA
    +LOCAL_MODULE_PATH := $(TARGET_OUT)/media/images
    +
    +LOCAL_GENERATE_CUSTOM_FOLDER := custom:lk/logo
    +LOCAL_SRC_FILES := custom/$(LOCAL_MODULE)
    +
    +include $(BUILD_PREBUILT)
    +endif


    这部分脚本编译是为了将生成的boot_logo_custom搬到system/media/images下的


    diff --git a/boot_logo_updater/boot_logo_updater.c b/boot_logo_updater/boot_logo_updater.c
    index 5836f21..745d64f 100755
    --- a/boot_logo_updater/boot_logo_updater.c
    +++ b/boot_logo_updater/boot_logo_updater.c
    @@ -93,7 +93,7 @@ extern void bootlogo_fb_init();
     extern void bootlogo_fb_deinit();
     */
     const char LOGO_PATH[] = "/system/media/images/boot_logo";
    -
    +const char LOGO_CUSTOM_PATH[] = "/system/media/images/boot_logo_custom";// **** add changeLogo 20140508
     #define RGB565_TO_ARGB8888(x)  
         ((((x) &   0x1F) << 3) |    
          (((x) &  0x7E0) << 5) |    
    @@ -113,8 +113,8 @@ const char LOGO_PATH[] = "/system/media/images/boot_logo";
     #define LCD_BACKLIGHT_PATH "/sys/class/leds/lcd-backlight/brightness"
     #define BOOT_REASON_SYS_PROPERTY "sys.boot.reason"
     #define BOOT_PACKAGE_SYS_PROPERTY "persist.sys.bootpackage"
    -
    -
    +#define MAX_RETRY_COUNT 20 // **** add changeLogo 20140508
    +#define uchar unsigned char
     /*
      * return value:
      * 0: normal
    @@ -210,7 +210,61 @@ void set_int_value(const char * path, const int value)
     
      write_to_file(path, buf, strlen(buf));
     }
    -
    +// **** add changeLogo 20140508 begin
    +int do_read()
    +{
    + int fd,of,i=0,n,sectorSize,index;
    +
    + char *buffer = NULL;
    + sectorSize=512;
    + buffer = (char*)malloc(sectorSize);
    + if(buffer == NULL)
    + {
    + printf("ERROR buffer malloc fail!");
    + return -1;
    + }
    + memset(buffer, 0, sectorSize);
    + char PN[20];
    + sprintf(PN,"/dev/pro_info");
    + printf("PN:%s ",PN);//open your raw data partiton
    +
    + fd= open(PN,O_RDWR);
    + if(fd<= 0)
    + {
    + printf("ERROR open fail %d ",fd);
    + return -1;
    + }
    +
    + //read
    + buffer = NULL;
    + buffer = (char*)malloc(sectorSize);
    + if(buffer == NULL)
    + {
    + printf("ERROR buffer malloc fail!");
    + return -1;
    + }
    + of=lseek(fd,0,SEEK_SET);
    + printf("lseek offset: %d ",of);
    + if(of == -1)
    + {
    + printf("ERROR lseek file fail! ");
    + return -1;
    + }
    + memset(buffer,0,sectorSize);
    + n=read(fd,buffer,sectorSize);
    + if(n != sectorSize)
    + {
    + printf("ERROR read fail ");
    + close(fd);
    + return -1;
    + }
    + printf("result:%s",buffer);
    + printf("(buffer+104):%s",*(buffer+104));
    + index = atoi(*(buffer+104));
    + close(fd);
    + return index;
    +}
    +// **** add changeLogo 20140508 end
    //读取/dev/pro_info文件内的第104个字节,可以adb pull出来查看
     int main(void)
     {
    @@ -279,12 +333,29 @@ int main(void)
         printf("[boot_logo_updater] fbsize= %d ",fbsize);
         printf("[boot_logo_updater] rgb565_logo_size = %d ",rgb565_logo_size);
         // (3) open logo file
    -
    -    if ((fd = open(LOGO_PATH, O_RDONLY)) < 0) {
    -        fprintf(stderr, "failed to open logo file: %s ", LOGO_PATH);
    -        goto done;
    -    }
    -
    +// **** add changeLogo 20140508 begin    
    +#if  MTK_COMMAND_SWITCH_LOGO
    +       if(do_read()==0)
    +       {
    +        if ((fd = open(LOGO_PATH, O_RDONLY)) < 0) {
    +            fprintf(stderr, "failed to open logo file: %s ", LOGO_PATH);
    +            goto done;
    +        }
    +       }
    +       else if(do_read()==1)
    +       {
    +        if ((fd = open(LOGO_CUSTOM_PATH, O_RDONLY)) < 0) {
    +            fprintf(stderr, "failed to open logo file: %s ", LOGO_CUSTOM_PATH);
    +            goto done;
    +        }
    +       }
    +#else
    +        if ((fd = open(LOGO_PATH, O_RDONLY)) < 0) {
    +            fprintf(stderr, "failed to open logo file: %s ", LOGO_PATH);
    +            goto done;
    +        }
    +#endif
    +// **** add changeLogo 20140508 end
         // (4) map framebuffer
     
         fbbuf = mmap(0, fbsize*2, PROT_READ|PROT_WRITE, MAP_SHARED, fb, 0);


    2. mediatek/platorm.git


    diff --git a/mt6572/lk/load_image.c b/mt6572/lk/load_image.c
    此处是读取dev/pro_info中第104个字节的值存储到logoindex供mt_logo.c调用
    old mode 100644
    new mode 100755
    index 5c8d0cb..9b0bc5a
    --- a mediatek/platorm/mt6572/lk/load_image.c
    +++ b mediatek/platorm/mt6572/lk/load_image.c
    @@ -28,7 +28,7 @@ unsigned int g_rcimg_sz = 0;
     unsigned int g_fcimg_sz = 0;
     unsigned int g_kimg_sz = 0;
     unsigned int g_rimg_sz = 0;
    -
    +unsigned char logoindex = 0;
     #if 1
     
     static int mboot_common_load_part_info(part_dev_t *dev, char *part_name, part_hdr_t *part_hdr)
    @@ -168,6 +168,74 @@ exit:
     
         return len;
     }
    +//Added by Dai@wingtech.com begin ------- **** add changeLogo 20140508 begin
    +int mboot_common_load_part_get_logo_index(char *part_name, unsigned long addr)
    +{
    +    long len;
    +  unsigned long begin;
    +#ifdef MTK_EMMC_SUPPORT
    +  unsigned long long start_addr;
    +#else
    +  unsigned long start_addr;
    +#endif
    +    part_t *part;
    +    part_dev_t *dev;
    +    //part_hdr_t *part_hdr;
    +
    +    dev = mt_part_get_device();
    +    if (!dev)
    +    { return -ENODEV;
    +    }
    +
    +    part = mt_part_get_partition(part_name);
    +    if (!part)
    +    { return -ENOENT;
    +    }
    +
    +#ifdef MTK_EMMC_SUPPORT
    + start_addr = (u64)part->startblk * BLK_SIZE;
    +#else
    +    start_addr = part->startblk * BLK_SIZE;
    +#endif
    +    printf("dai part_name = %s, start_addr = 0x%x",part_name,start_addr);
    +
    +    //Marked by Dai@wingtech.com: Not part_hdr in PRO_INFO partition.---------------------
    +
    +    //part_hdr = (part_hdr_t*)malloc(sizeof(part_hdr_t));
    +
    +    //if (!part_hdr)
    +    //{ return -ENOMEM;
    +    //}
    +
    +    //len = mboot_common_load_part_info(dev, part_name, part_hdr);
    +    //if (len < 0) {
    +    //    len = -EINVAL;
    +    //    goto exit;
    +    //}

    +    //len = dev->read(dev, start_addr + sizeof(part_hdr_t), (uchar*)addr, part_hdr->info.dsize);
    +    //Marked end.--------------------------------------------------------------------------
    +
    + begin = get_timer(0);
    +
    +    len = dev->read(dev, start_addr , (uchar*)addr, 4096);
    +    logoindex = (*(unsigned char *)(addr+104));
    +    if (len < 0) {
    +        printf("dai [%s] %s partition read error. LINE: %d ", MODULE_NAME, part_name, __LINE__);
    +        len = -EIO;
    +        //goto exit;
    +    }
    +
    +
    +   //exit:
    +   // if (part_hdr)
    +   // free(part_hdr);
    +
    +    return len;
    +}
    +
    +unsigned char data_buffer[256] ={0};
    +//End of Added by Dai@wingtech.com ----- **** add changeLogo 20140508 end
     
     /**********************************************************
      * Routine: mboot_common_load_logo
    @@ -179,6 +247,7 @@ int mboot_common_load_logo(unsigned long logo_addr, char* filename)
     {
         int ret;
         long len;
    +    int i;
     
     #if (CONFIG_COMMANDS & CFG_CMD_FAT)
         len = file_fat_read(filename, (unsigned char *)logo_addr, 0);
    @@ -186,7 +255,19 @@ int mboot_common_load_logo(unsigned long logo_addr, char* filename)
         if (len > 0)
             return (int)len;
     #endif
    -
    +// **** add changeLogo 20140508 begin
    +#if  MTK_COMMAND_SWITCH_LOGO
    +    mboot_common_load_part_get_logo_index(PART_PRO_INFO, logo_addr);
    +    //test code begin ++++
    +    for(i=0;i<(128);i++)
    +    {
    +           data_buffer[i] = *(unsigned char*)(logo_addr+i);
    +           printf("[Dai]result[%d]:--0x%x ",i,data_buffer[i]);
    +    }
    +    printf("[Dai]result[104]:--0x%x ",data_buffer[104]);
    +    //end of test code -----
    +#endif
    +// **** add changeLogo 20140508 end
         ret = mboot_common_load_part(PART_LOGO, logo_addr);
     
         return ret;
    @@ -911,8 +992,8 @@ int mboot_recovery_load_raw_part(char *part_name, unsigned long *addr, unsigned
             len = -EIO;
             goto exit;
      }
    -
    -    printf("[%s] Load '%s' partition to 0x%08X (%d bytes in %ld ms) ", MODULE_NAME, part->name, addr, size, get_timer(begin));
    +    // **** add changeLogo 20140508 
    +    printf("[%s] Load '%s' start_addr = %x partition to 0x%08X (%d bytes in %ld ms) ", MODULE_NAME, part->name ,start_addr,addr, size, get_timer(begin));
     
     exit:
         return len;
    diff --git a/mt6572/lk/mt_logo.c b/mt6572/lk/mt_logo.c
    little kernel层的logo切换显示位置
    old mode 100644
    new mode 100755
    index 36442e1..c10f0fa
    --- a/mt6572/lk/mt_logo.c
    +++ b/mt6572/lk/mt_logo.c
    @@ -60,7 +60,7 @@
     
     //#include <u-boot/zlib.h>
     #include <lib/zlib.h>
    -
    +extern unsigned char logoindex;
     // ---------------------------------------------------------------------------
     //  Local Variables
     // ---------------------------------------------------------------------------
    @@ -731,8 +731,25 @@ void mt_disp_show_boot_logo(void)
         }
         else
         {
    -        show_logo(0);
    -        mt_disp_update(0, 0, CFG_DISPLAY_WIDTH, CFG_DISPLAY_HEIGHT);
    +// **** add changeLogo 20140508 begin        
    +#if  MTK_COMMAND_SWITCH_LOGO      
    +       if(logoindex==0)
    +        {
    +            show_logo(0);
    +            mt_disp_update(0, 0, CFG_DISPLAY_WIDTH, CFG_DISPLAY_HEIGHT);
    +        }
    +        else 
    +        {
    +            show_logo(44);
    +            mt_disp_update(0, 0, CFG_DISPLAY_WIDTH, CFG_DISPLAY_HEIGHT);
    +        }
    +#else  
    +        {
    +            show_logo(0);
    +            mt_disp_update(0, 0, CFG_DISPLAY_WIDTH, CFG_DISPLAY_HEIGHT);
    +        }
    +#endif  
    +// **** add changeLogo 20140508 end
         }
              return;
    解释下为什么mt_logo.c下的logo图片都是数字?这就要说明下little kernel的启动原理:


    1. Little Kernel会在platform_early_init阶段首先会获取lcm params,其工作流
    程就是透过读id找到现在插入的LCM,根据LCM的分辨率申请相应大小的frame buffer
    并确定frame buffer起始地址
    2. 为logo.bin预留4M Ram
    3. 之后在platform_init阶段,直接将logo.bin载入到4M Ram中
    4, 完成载入后,在platform_init中mt_disp_show_boot_logo();会调用
    show_logo(0);完成第一张logo显示。其中的index=0代表在logo.bin中压缩的第一张
    图片,logo.bin中的图片压缩顺序可以察看文件
    mediatekcustomcommonlklogo ules.mk,如下
    RESOURCE_OBJ_LIST :=
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_uboot.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_battery.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_low_battery.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_charger_ov.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_0.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_1.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_2.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_3.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_4.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_5.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_6.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_7.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_8.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_9.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_num_percent.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_animation_01.raw

    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_animation_02.raw

    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_animation_03.raw

    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_animation_04.raw

    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_animation_05.raw

    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_animation_06.raw

    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_animation_07.raw

    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_animation_08.raw

    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_animation_09.raw

    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_animation_10.raw

    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_10_01.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_10_02.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_10_03.raw
    1.
    2.
    1.
    2.
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_10_04.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_10_05.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_10_06.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_10_07.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_10_08.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_10_09.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_10_10.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_bg.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_img.raw
    $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_bat_100.raw


    3. mediatek/custom.git
    BOOT_LOGO_CUSTOM_IMAGE这部分代码在4.4上是没有编译的,所以不用增加这部分的编译机制
    进入mediatekcustomcommonubootlogo文件夹运行update $(BOOT_LOGO),
    diff --git a/common/lk/logo/custom/kernel.bmp b/common/lk/logo/custom/kernel.bmp
    new file mode 100755
    index 0000000..65f8d51
    Binary files /dev/null and b/common/lk/logo/custom/kernel.bmp differ
    diff --git a/common/lk/logo/custom/uboot.bmp b/common/lk/logo/custom/uboot.bmp
    new file mode 100755
    index 0000000..65f8d51
    Binary files /dev/null and b/common/lk/logo/custom/uboot.bmp differ
    diff --git a/common/lk/logo/rules.mk b/common/lk/logo/rules.mk
    old mode 100644
    new mode 100755
    index 6e861a7..12a66a9
    --- a/common/lk/logo/rules.mk
    +++ b/common/lk/logo/rules.mk
    @@ -9,6 +9,7 @@ ZPIPE := $(BOOT_LOGO_DIR)/tool/zpipe
     BOOT_LOGO_RESOURCE := $(BUILDDIR)/$(BOOT_LOGO_DIR)/$(BOOT_LOGO).raw
     LOGO_IMAGE := $(BUILDDIR)/logo.bin
     BOOT_LOGO_IMAGE := $(LOCAL_DIR)/../../../../common/lk/logo/boot_logo
    +BOOT_LOGO_CUSTOM_IMAGE := $(LOCAL_DIR)/../../../../common/lk/logo/boot_logo_custom
     RESOURCE_OBJ_LIST :=  
                 $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_uboot.raw
                 $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_battery.raw
    @@ -53,15 +54,18 @@ RESOURCE_OBJ_LIST :=  
                 $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_roll_1.raw
                 $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_roll_2.raw
                 $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_roll_3.raw
    -            $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_roll_4.raw 
    +            $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_roll_4.raw
    +            $(BOOT_LOGO_DIR)/custom/uboot.raw
    +            $(BOOT_LOGO_DIR)/custom/kernel.raw
     GENERATED +=
                 $(BOOT_LOGO_RESOURCE)
                 $(LOGO_IMAGE)
                 $(BOOT_LOGO_IMAGE)
    +            $(BOOT_LOGO_CUSTOM_IMAGE)
                 $(addprefix $(BUILDDIR)/,$(RESOURCE_OBJ_LIST))
     
     
    -all:: $(LOGO_IMAGE) $(BOOT_LOGO_IMAGE)
    +all:: $(LOGO_IMAGE) $(BOOT_LOGO_IMAGE) $(BOOT_LOGO_CUSTOM_IMAGE)
     
     $(LOGO_IMAGE):$(MKIMG) $(BOOT_LOGO_RESOURCE)
      $(NOECHO) if [ ! -x $(MKIMG) ]; then chmod a+x $(MKIMG); fi
    @@ -86,3 +90,9 @@ $(BOOT_LOGO_IMAGE): $(BMP_TO_RAW)
      $(NOECHO) if [ ! -x $(BMP_TO_RAW) ]; then chmod a+x $(BMP_TO_RAW); fi
      @echo "Compiling_BMP_TO_RAW_BOOT_LOGO"
      $(BMP_TO_RAW) $(BOOT_LOGO_IMAGE) $(BOOT_LOGO_DIR)/$(BOOT_LOGO)/$(BOOT_LOGO)_kernel.bmp
    +
    +$(BOOT_LOGO_CUSTOM_IMAGE): $(BMP_TO_RAW)
    + @$(MKDIR)
    + $(NOECHO) if [ ! -x $(BMP_TO_RAW) ]; then chmod a+x $(BMP_TO_RAW); fi
    + @echo "Compiling_BMP_TO_RAW_BOOT_LOGO_CUSTOM"
    + $(BMP_TO_RAW) $(BOOT_LOGO_CUSTOM_IMAGE) $(BOOT_LOGO_DIR)/custom/kernel.bmp


    4.build.git
    这部分代码在4.4上是没有编译的
    4.4把android层的boot_image移动到kernel层,使用logo.bin内
    ,所以不用增加这部分的编译机制


    这部分和新增apk编译方式一样,新增boot_logo_custom的编译


    diff --git a/target/product/common.mk b/target/product/common.mk
    index 3d97676..e5acf49 100755
    --- a/target/product/common.mk
    +++ b/target/product/common.mk
    @@ -403,6 +403,7 @@ PRODUCT_PACKAGES :=
         ipohctl
         boot_logo_updater
         boot_logo
    +    boot_logo_custom
         bootanimation
         libtvoutjni
         libtvoutpattern
    5.packages/apps/Contacts.git
    上层暗码切换,对nv进行读写操作
    关键点AP_CFG_REEB_PRODUCT_INFO_LID = 35;不同的项目此值是不同的
    需要数清楚新平台的Custom_NvRam_LID.h文件中此lid的index为多少,并改为正确的值


    diff --git a/src/com/mediatek/contacts/SpecialCharSequenceMgrProxy.java b/src/com/mediatek/contacts/SpecialCharSequenceMgrProxy.java
    index 3a0e091..b6ec321 100755
    --- a/src/com/mediatek/contacts/SpecialCharSequenceMgrProxy.java
    +++ b/src/com/mediatek/contacts/SpecialCharSequenceMgrProxy.java
    @@ -33,7 +33,7 @@ import com.android.contacts.R;
     import com.android.contacts.SpecialCharSequenceMgr;
     import com.android.internal.telephony.ITelephony;
     import com.android.internal.telephony.PhoneConstants;
    -
    +import android.os.IBinder;
     //import com.mediatek.contacts.ContactsFeatureConstants.FeatureOption;
     import com.mediatek.contacts.simcontact.SimCardUtils;
     import com.mediatek.contacts.simcontact.SlotUtils;
    @@ -54,10 +54,11 @@ public class SpecialCharSequenceMgrProxy {
         private static final String ADN_PHONE_NUMBER_COLUMN_NAME = "number";
         private static final String ADN_NAME_COLUMN_NAME = "name";
         private static final String ADN_INDEX_COLUMN_NAME = "index";
    -    private static final String CHANGE_LOGO = "*#123321#";
    - private static final String MCCANDMNC = "*#1220#";
    - private static final String IMEI1_MODIFY =FeatureOption.WT_IMEI_MODIFY_CODE1; // sunlee add 20131024
    - private static final String IMEI2_MODIFY =FeatureOption.WT_IMEI_MODIFY_CODE2; // sunlee add 20131024
    +    private static final String CHANGE_LOGO = FeatureOption.WT_CHANGE_LOGO_CODE;//"*#123321#";
    +    private static final String MCCANDMNC = "*#1220#";
    +    private static final String IMEI1_MODIFY =FeatureOption.WT_IMEI_MODIFY_CODE1; // sunlee add 20131024
    +    private static final String IMEI2_MODIFY =FeatureOption.WT_IMEI_MODIFY_CODE2; // sunlee add 20131024
    +    private static final int AP_CFG_REEB_PRODUCT_INFO_LID = 35;
         /**
          * M: [Gemini+] once a slot is ready, it would be put in this list and waiting for information query
          * after this list is empty, it means all slot information has been retrieved.
    @@ -84,6 +85,17 @@ public class SpecialCharSequenceMgrProxy {
     
         static boolean handleChangeLogo(Context context, String input) {
             if (input.equals(CHANGE_LOGO)) {
    +        /* **** add changeLogo 20140508 begin */
    +        if(FeatureOption.MTK_COMMAND_SWITCH_LOGO){
    +            if (readData()==0)
    +            {
    +                writeData(1); 
    +            }else 
    +            {
    +                writeData(0);
    +            }
    +        }
    +        /* **** add changeLogo 20140508 end */
                 File iFile = new File("/flag/change.flag");
                 if (false == iFile.exists()) {
                     try {
    @@ -103,7 +115,79 @@ public class SpecialCharSequenceMgrProxy {
             }
             return false;
         }
    -
    +
    +    /* **** add changeLogo 20140508 begin */
    +    private static byte readData()
    + {
    + IBinder binder = ServiceManager.getService("NvRAMAgent");
    + NvRAMAgent agent = NvRAMAgent.Stub.asInterface(binder);
    + byte[] buff = null;
    + byte[] buff2 ={0};
    + try 
    + {
    + buff = agent.readFile(AP_CFG_REEB_PRODUCT_INFO_LID);// read buffer from nvram
    +
    + catch (RemoteException e) 
    + {
    + e.printStackTrace();
    + }
    +  buff2[0]= buff[104];
    +  Log.i("readData", "buff:"+buff);
    +  Log.i("readData", "buff[104]:"+buff[104]);
    +  Log.i("readData", "buff2[0]:"+buff2[0]);
    +
    + return buff2[0];
    + }
    + private static byte[] getBytes(int data)
    + {
    + byte[] bytes = new byte[4];
    + bytes[0] = (byte)(data&0xff);
    + bytes[1] = (byte)((data&0xff00)>>8);
    + bytes[2] = (byte)((data&0xff0000)>>16);
    + bytes[3] = (byte)((data&0xff000000)>>24);
    + return bytes;
    + }
    + private static void writeData(int n) 
    + {
    + byte[] buff = null;
    + IBinder binder = ServiceManager.getService("NvRAMAgent");
    + NvRAMAgent agent = NvRAMAgent.Stub.asInterface(binder);
    + try 
    + {
    + buff = agent.readFile(AP_CFG_REEB_PRODUCT_INFO_LID);// read buffer from nvram
    +
    + catch (RemoteException e) 
    + {
    + e.printStackTrace();
    + }
    + Log.i("writeData", "buff:"+buff);
    + byte[] write_buff = new byte[]{0,0,0,0};
    + int flag1 = n;
    + byte[] by = getBytes(flag1);
    + for(int i=0;i<4;i++)
    + write_buff[i] = by[i];
    + Log.i("writeData", "write_buff:"+buff[104]);
    + try 
    + { buff[104]=write_buff[0];
    + Log.i("writeData", "buff[104]:"+buff[104]);
    + Log.i("writeData", "write_buff[0]:"+write_buff[0]);
    + int flag = agent.writeFile(AP_CFG_REEB_PRODUCT_INFO_LID, buff);
    + if (flag > 0) 
    + {
    + System.out.println("write success");
    +
    + else 
    + {
    + System.out.println("write failed");
    + }
    +
    + catch (RemoteException e)
    + {
    + e.printStackTrace();
    + }
    +
    + }
    +    /* **** add changeLogo 20140508 end */
      static boolean handleMCCMNC(Context context, String input) {
             if (input.equals(MCCANDMNC)) {
      TelephonyManager telManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);


    A packages/apps/Contacts/src/com/mediatek/contacts/NvRAMAgent.java
    这个文件是生成出来的,可以不用增加
    packages/apps/Contacts/src/com/mediatek/contacts/SpecialCharSequenceMgrProxy.java
    这个文件主要就是写入的暗码修改命令
    针对不同的读取状态,进行状态切换    
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  • 原文地址:https://www.cnblogs.com/LoongEmbedded/p/5298251.html
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