U-boot开机在TFT触摸显示屏输出信息的修改方法

平台 AT91SAM9261EK  别的平台应该也可以，没试过

这里修改的主要是u-boot开机logo下面的输出信息

[root@localhost ~]# gedit /work/u-boot-1.3.4/common/lcd.c

修改大约827行后的sprintf()函数的字符串参数

#ifdef CONFIG_ATMEL_LCD
# ifdef CONFIG_LCD_INFO
    sprintf (info, "%s", U_BOOT_VERSION);
    lcd_drawchars (LCD_INFO_X, LCD_INFO_Y, (uchar *)info, strlen(info));

    sprintf (info, "(C) 2008 ATMEL Corp");
    lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT,
                    (uchar *)info, strlen(info));

//    sprintf (info, "[e-mail]");
/* ******************************************************************* */
/* Date:         20120414                                              */
/* Author:       xjf616                                                   */
/* ******************************************************************* */
    sprintf (info, "HUNAN UNIVERSITY");
    lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 2,
                    (uchar *)info, strlen(info));

    sprintf (info, "%s CPU at %s MHz",
        AT91_CPU_NAME,
        strmhz(temp, AT91_MAIN_CLOCK));
    lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 3,
                    (uchar *)info, strlen(info));

    dram_size = 0;
    for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
        dram_size += gd->bd->bi_dram[i].size;
    nand_size = 0;
    for (i = 0; i < CFG_MAX_NAND_DEVICE; i++)
        nand_size += nand_info[i].size;
    sprintf (info, "  %ld MB SDRAM, %ld MB NAND",
        dram_size >> 20,
        nand_size >> 20 );
    lcd_drawchars (LCD_INFO_X, LCD_INFO_Y + VIDEO_FONT_HEIGHT * 4,
                    (uchar *)info, strlen(info));
# endif /* CONFIG_LCD_INFO */
#endif /* CONFIG_ATMEL_LCD */

重新编译，OK。

效果图对比

参考资料：

http://blog.csdn.net/voice_shen/article/details/6789424