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使用Uboot自动烧写镜像时，通常会在LCD屏幕上显示当前工作的进度条，下面给出一种画进度条的方法（仅支持32位和16位LCD）：

1. 宏定义声明

#define PROBAR_WIDTH    600 //进度条宽度  #define PROBAR_HEIGHT   30  //进度条高度  #define PROBAR__PIEXL   2   //边框像素    #define EDGING_COLOR    CONSOLE_COLOR_WHITE //边框颜色  #define PROBAR_COLOR    CONSOLE_COLOR_GREEN //进度条颜色    #define BACKGD_COLOR    CONSOLE_COLOR_BLACK //背景颜色

1. 画进度条边框函数

/*画进度条边框*/void LCD_draw_pb_edging(ushort x,ushort y) {       int  i, j;    uchar *lcd_base, *dest;#if (LCD_BPP == LCD_COLOR32)    uint *tmp;#else    ushort *tmp;#endif     lcd_get_size(&lcd_line_length);      lcd_base = map_sysmem(gd->fb_base, 0);          dest = (uchar *)( lcd_base + y * lcd_line_length + x * sizeof(*tmp));        for(i=0; i
   
    = (PROBAR_HEIGHT - PROBAR_PIEXL)) ||                (j < PROBAR_PIEXL) || (j >= (PROBAR_WIDTH  - PROBAR_PIEXL)))                  *tmp = EDGING_COLOR;              tmp++;          }          dest += lcd_line_length;      }  }
   

2.画进度条

/*画进度条*/void LCD_draw_progress_bar(ushort x,ushort y,int percent_age) {       int  i, j;    int current_bar_width, current_bar_color;    uchar *lcd_base, dest;#if (LCD_BPP == LCD_COLOR32)    uint *tmp;#else    ushort *tmp;#endif     lcd_get_size(&lcd_line_length);      lcd_width = lcd_get_pixel_eidth();    lcd_base = map_sysmem(gd->fb_base, 0);          dest = (uchar *)( lcd_base + (y + PROBAR__PIEXL + 1) * lcd_line_length  \           + (x + PROBAR__PIEXL + 1)* sizeof(*tmp));        if(percent_age == 0)    {        current_bar_width = PROBAR_WIDTH - PG_PIEXL - 1;        current_bar_color = BACKGD_COLOR;    }        else    {           current_bar_width = (PROBAR_WIDTH - PG_PIEXL - 1) * percent_age / 100;        current_bar_color = PROBAR_COLOR;     }      for(i=0; i<(PROBAR_HEIGHT - PROBAR_PIEXL - 1); i++)     {          tmp = dest;          for(j=0; j

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