logo居中：
1、设置logo图片在屏幕中的位置
vi drivers/video/fbmem.c
找到"fb_show_logo_line"函数，把
image.dx = 0;
image.dy = y;
改为

#ifdef CONFIG_LOGO_LOWERPOWER_WARNING  /*no config*/
if(1 == get_battery_status()){
image.dx = (info->var.xres/2)-(logo->width)/2;
image.dy = (info->var.yres/2)-(logo->height)/2;
}else{
image.dx = 0;
image.dy = y;

}
#else
//image.dx = 0;
//image.dy = y;
image.dx = (info->var.xres/2)-(logo->width)/2; //by jiangdou
image.dy = (info->var.yres/2)-(logo->height)/2;//by jiangdou
#endif
image.width = logo->width;
image.height = logo->height;
2、可以忽略
vi drivers/video/console/fbcon.c
找到"fbcon_prepare_logo"函数，在
logo_height = fb_prepare_logo(info, ops->rotate);
后面加上
logo_height += (info->var.yres/2) - (206/2);

小企鹅的数量问题，这个和CPU的数量有关，小企鹅显示越多，CPU核心数越多！

修改为1个小企鹅：

int fb_show_logo(struct fb_info *info, int rotate)
{
 int y;
#ifdef CONFIG_LOGO_LOWERPOWER_WARNING
 if(1 ==  get_battery_status()){
  y = fb_show_logo_line(info, rotate, fb_logo.logo, 0,
         1);
 }else{
  y = fb_show_logo_line(info, rotate, fb_logo.logo, 0,
        1);// num_online_cpus());  //jiangdou
 
 }
#else
 y = fb_show_logo_line(info, rotate, fb_logo.logo, 0,
           1);// num_online_cpus());//jiangdou
#endif
 y = fb_show_extra_logos(info, y, rotate);
 
 return y;
}
#else