Android平臺啓動初始化"ANDROID"字樣修改(linux部分的啓動界面，補充6.0版本代碼)

Android平臺啓動初始化"ANDROID"字樣修改(linux部分的啓動界面)

4.4版本修改方式如下：

在啓動代碼system/core/init/init.c中將下面的代碼修改msg變量的部分，即可在開機時顯示所修改的內容，一般爲了開機的簡約，這段代碼通常被屏蔽掉。

if(load_565rle_image(INIT_IMAGE_FILE) ) {
fd =open("/dev/tty0", O_WRONLY);
if (fd >=0) {
constchar *msg;
msg= "\n"
"\n"
"\n"
"\n"
"\n"
"\n"
"\n" // console is 40cols x 30 lines
"\n"
"\n"
"\n"
"\n"
"\n"
"\n"
"\n"
" A N D R O I D ";//需要修改的地方
write(fd, msg, strlen(msg));
close(fd);
}
}

重新進行源碼的編譯，啓動Android系統即可。

轉載來源：https://blog.csdn.net/sunjing_/article/details/60138331

6.0修改方式如下：

由4.4延伸出6.0的修改方式

源碼：system/core/init/init.cpp

修改前代碼：

static int console_init_action(int nargs, char **args)
{
    char console[PROP_VALUE_MAX];
    if (property_get("ro.boot.console", console) > 0) {
        snprintf(console_name, sizeof(console_name), "/dev/%s", console);
    }

    int fd = open(console_name, O_RDWR | O_CLOEXEC);
    if (fd >= 0)
        have_console = 1;
    close(fd);

    fd = open("/dev/tty0", O_WRONLY | O_CLOEXEC);
    if (fd >= 0) {
        const char *msg;
            msg = "\n"
        "\n"
        "\n"
        "\n"
        "\n"
        "\n"
        "\n"  // console is 40 cols x 30 lines
        "\n"
        "\n"
        "\n"
        "\n"
        "\n"
        "\n"
        "\n"
        "             A N D R O I D ";
        write(fd, msg, strlen(msg));
        close(fd);
    }

    return 0;
}

修改後代碼：

static int console_init_action(int nargs, char **args)
{
    char console[PROP_VALUE_MAX];
    if (property_get("ro.boot.console", console) > 0) {
        snprintf(console_name, sizeof(console_name), "/dev/%s", console);
    }

    int fd = open(console_name, O_RDWR | O_CLOEXEC);
    if (fd >= 0)
        have_console = 1;
    close(fd);

    fd = open("/dev/tty0", O_WRONLY | O_CLOEXEC);
    if (fd >= 0) {
        const char *msg;
            msg = "";
        write(fd, msg, strlen(msg));
        close(fd);
    }

    return 0;
}