init_panel_info();
　　lcd_setcolreg();
　　lcd_ctrl_init();
　　lcd_enable();
我觉得需要在driver/video/下面建一个tiny4412_fb.c然后根据exynos和HD700的器件手册来填充这些函数和panel_info结构体，是这样的吗？
不过按照这个：http://blog.chinaunix.net/uid-26119896-id-3198905.html 上面说的只需要根据硬件设置好pGD，并且初始化一个GraphicDevice的设备空间就差不多可以了。
这两种方式有什么区别吗？

查看一下driver/video/ati_radeon_fb.c中的video_hw_init()函数，填充了pGD各参数：

void *video_hw_init(void)
{
    GraphicDevice *pGD = (GraphicDevice *) & ctfb;
    u32 *vm;
    char *penv;
    unsigned long t1, hsynch, vsynch;
    int bits_per_pixel, i, tmp, vesa_idx = 0, videomode;
    struct ctfb_res_modes *res_mode;
    struct ctfb_res_modes var_mode;

    rinfo = malloc(sizeof(struct radeonfb_info));

    printf("Video: ");
    if(radeon_probe(rinfo)) {
        printf("No radeon video card found!\n");
        return NULL;
    }

    tmp = 0;

    videomode = CONFIG_SYS_DEFAULT_VIDEO_MODE;
    /* get video mode via environment */
    if ((penv = getenv ("videomode")) != NULL) {
        /* deceide if it is a string */
        if (penv[0] <= '9') {
            videomode = (int) simple_strtoul (penv, NULL, 16);
            tmp = 1;
        }
    } else {
        tmp = 1;
    }
    if (tmp) {
        /* parameter are vesa modes */
        /* search params */
        for (i = 0; i < VESA_MODES_COUNT; i++) {
            if (vesa_modes.vesanr == videomode)
                break;
        }
        if (i == VESA_MODES_COUNT) {
            printf ("no VESA Mode found, switching to mode 0x%x ", CONFIG_SYS_DEFAULT_VIDEO_MODE);
            i = 0;
        }
        res_mode = (struct ctfb_res_modes *) &res_mode_init[vesa_modes.resindex];
        bits_per_pixel = vesa_modes.bits_per_pixel;
        vesa_idx = vesa_modes.resindex;
    } else {
        res_mode = (struct ctfb_res_modes *) &var_mode;
        bits_per_pixel = video_get_params (res_mode, penv);
    }

    /* calculate hsynch and vsynch freq (info only) */
    t1 = (res_mode->left_margin + res_mode->xres +
          res_mode->right_margin + res_mode->hsync_len) / 8;
    t1 *= 8;
    t1 *= res_mode->pixclock;
    t1 /= 1000;
    hsynch = 1000000000L / t1;
    t1 *= (res_mode->upper_margin + res_mode->yres +
           res_mode->lower_margin + res_mode->vsync_len);
    t1 /= 1000;
    vsynch = 1000000000L / t1;

    /* fill in Graphic device struct */
    sprintf (pGD->modeIdent, "%dx%dx%d %ldkHz %ldHz", res_mode->xres,
         res_mode->yres, bits_per_pixel, (hsynch / 1000),
         (vsynch / 1000));
    printf ("%s\n", pGD->modeIdent);
    pGD->winSizeX = res_mode->xres;
    pGD->winSizeY = res_mode->yres;
    pGD->plnSizeX = res_mode->xres;
    pGD->plnSizeY = res_mode->yres;

    switch (bits_per_pixel) {
    case 24:
        pGD->gdfBytesPP = 4;
        pGD->gdfIndex = GDF_32BIT_X888RGB;
        if (res_mode->xres == 800) {
            pGD->winSizeX = 832;
            pGD->plnSizeX = 832;
        }
        break;
    case 16:
        pGD->gdfBytesPP = 2;
        pGD->gdfIndex = GDF_16BIT_565RGB;
        if (res_mode->xres == 800) {
            pGD->winSizeX = 896;
            pGD->plnSizeX = 896;
        }
        break;
    default:
        if (res_mode->xres == 800) {
            pGD->winSizeX = 1024;
            pGD->plnSizeX = 1024;
        }
        pGD->gdfBytesPP = 1;
        pGD->gdfIndex = GDF__8BIT_INDEX;
        break;
    }

    pGD->isaBase = CONFIG_SYS_ISA_IO_BASE_ADDRESS;
    pGD->pciBase = (unsigned int)rinfo->fb_base;
    pGD->frameAdrs = (unsigned int)rinfo->fb_base;
    pGD->memSize = 64 * 1024 * 1024;

    /* Cursor Start Address */
    pGD->dprBase = (pGD->winSizeX * pGD->winSizeY * pGD->gdfBytesPP) +
        (unsigned int)rinfo->fb_base;
    if ((pGD->dprBase & 0x0fff) != 0) {
        /* allign it */
        pGD->dprBase &= 0xfffff000;
        pGD->dprBase += 0x00001000;
    }
    DPRINT ("Cursor Start %x Pattern Start %x\n", pGD->dprBase,
        PATTERN_ADR);
    pGD->vprBase = (unsigned int)rinfo->fb_base;    /* Dummy */
    pGD->cprBase = (unsigned int)rinfo->fb_base;    /* Dummy */
    /* set up Hardware */

    /* Clear video memory (only visible screen area) */
    i = pGD->winSizeX * pGD->winSizeY * pGD->gdfBytesPP / 4;
    vm = (unsigned int *) pGD->pciBase;
    while (i--)
        *vm++ = 0;
    /*SetDrawingEngine (bits_per_pixel);*/

    if (rinfo->family == CHIP_FAMILY_RV280)
        radeon_setmode_9200(vesa_idx, bits_per_pixel);
    else
        radeon_setmode();

    return ((void *) pGD);
}

请教下：你能用自己的uboot，而不用自带的superboot.bin，，启动开发板吗？？？？我用uboot for tiny4412的源码也不可以。

你好!我也想试试，怎么实现uboot中增加LCD的功能，但由于以前是做硬件的，现在一点也不通，不知道你实现了没有，能不能给个指导？非常感谢！

我的也是用光盘里面的uboot启动不了系统啊。

居然是内核trustzone的问题，把这项的配置去掉之后就OK了。不懂为什么，希望碰见这个问题的朋友可以验证一下，已经可以启动了。但是问题是不知道为什么这个trustzone配置会影响。