Uboot logo an LVDS RGB 24 shows not normal

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Uboot logo an LVDS RGB 24 shows not normal

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zhilinhuang
Contributor III

Hi ,everybody

我用的 是  imx6q   uboot  版本是    uboot-imx-imx_v2009.08_3.0.35_4.1.0

我公司现在采购了一块lvds 8 24 位的 ,分辨率为1024*768

现在的问题是,内核logo显示正常,uboot  logo 显示不正常,帮忙支持一下,谢谢。

我的具体操作如下

图片信息如下

pastedImage_0.png

按照规格书得出以下信息

HSPW =70     

HBPD =160 -70 = 90

HFPD = 160

VSPW 10

VBPD = 23 -10 =13

VFPD = 15

内核logo 显示正常,ubootlogo 显示不正常

具体如下

修改了 uboot

第一处 board/freescale/mx6q_sabresd/mx6q_sabresd.c

static struct fb_videomode lvds_xga = {

93    "XGA", 60, 1024, 768, 15385, 90, 160, 13, 15, 70, 10, // 修改成了以上得出的结果

94     FB_SYNC_EXT,

95     FB_VMODE_NONINTERLACED,

96     0,

  97 };

第二处:

ret = ipuv3_fb_init(&lvds_xga, di, IPU_PIX_FMT_RGB24, //原来是rgb666

                          DI_PCLK_LDB, 65000000);

         if (ret)

                  puts("LCD cannot be configured\n");

修改启动bootargs

bootargs_base=setenv bootargs console=ttymxc0,115200 video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24

显示如下

pastedImage_1.png

修改内核:

1

board-myimx6ek200.c

….

static struct ipuv3_fb_platform_data sabresd_fb_data[] = {

{

.disp_dev = "ldb",

1792     .interface_pix_fmt = IPU_PIX_FMT_RGB24,

1793     .mode_str = "LDB-XGA",

1794     //.default_bpp = 16,

1795     .default_bpp = 32,

1796     .int_clk = false,

1797      {

……..

2,修改 linux-2.6-imx-imx_3.0.35_4.1.0/drivers/video/mxc/ldb.c

106 static struct fb_videomode ldb_modedb[] = {

107 {

108 //"LDB-WXGA", 60, 1280, 800, 14065,

109 "LDB-WXGA", 60, 1024,768 , 15385,

110 //40, 40,

111 90, 160,

112 13, 15,

113 //21, 7,

114 70, 10,

115 0,

116 FB_VMODE_NONINTERLACED,

117 FB_MODE_IS_DETAILED,},

118     {

119      "LDB-XGA", 60, 1024, 768, 15385,

120      90, 160,

121      13, 15,

122      70, 10,

123      0,

124      FB_VMODE_NONINTERLACED,      //修改

125      FB_MODE_IS_DETAILED,},

内核logo 显示正常

pastedImage_2.png

请问该如果修改uboot logo 正常显示  我已经研究2天了还是没有找到解决的方法

我改了一下几个参数还是没有解决,

#define CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
#define LCD_BPPLCD_COLOR16
#define CONFIG_BMP_8BPP

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b45499
NXP TechSupport
NXP TechSupport

Hi zhilin,

You can refer to the thread Patch to support uboot logo keep from uboot to kernel for NXP Linux and Android BSP (HDMI, LCD and L...  in our community.
Have a great day,
Dan

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Mark Correct  button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

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fulinux
Contributor IV

你好,请问你的qq是多少,加下我的861239127

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zhilinhuang
Contributor III

HI,Dan Wang ,补丁我打好了,我改如何显示我的图片呢,现在uboot 显示图片为,现在我不知道如何是好。感觉都没有调

setup_splash_image () 这个函数

在 mx6q_sabreauto.c 中 代码如下

............................

#ifdef CONFIG_SPLASH_SCREEN 

void setup_splash_image(void)

{

  char *s;

  ulong addr;

  s = getenv("splashimage");

  if (s != NULL) {

  addr = simple_strtoul(s, NULL, 16);

#if defined(CONFIG_ARCH_MMU)

  addr = ioremap_nocache(iomem_to_phys(addr),

  fsl_bmp_600x400_size);

#endif

  memcpy((char *)addr, (char *)fsl_bmp_600x400,

  fsl_bmp_600x400_size);

  }

}

#endif

....................

在  patch 中 并没有定义 CONFIG_SPLASH_SCREEN

--- a/include/configs/mx6q_sabresd.h

+++ b/include/configs/mx6q_sabresd.h

@@ -324,7 +324,7 @@

  #define CONFIG_ENV_IS_NOWHERE 1

#endif

-#define CONFIG_SPLASH_SCREEN

+//#define CONFIG_SPLASH_SCREEN

#ifdef CONFIG_SPLASH_SCREEN

我也尝试自己定义了 CONFIG_SPLASH_SCREEN   但是显示效果还是一样。

我的配置文件定义如下

.......................

#ifndef CONFIG_SPLASH_SCREEN_myadd

373 #define CONFIG_UBOOT_LOGO_ENABLE

374

375 #ifdef CONFIG_UBOOT_LOGO_ENABLE

376

377

378

379

380 #define CONFIG_VIDEO_MX5 // my modify add

381

382 #define CONFIG_LCD  // my add

383 #define CONFIG_CMD_BMP

384 #define CONFIG_SPLASH_SCREEN //my add

385

386

387     // Select one of the output mode

388 //  #define IPU_OUTPUT_MODE_HDMI

389     #define IPU_OUTPUT_MODE_LVDS

390 //  #define IPU_OUTPUT_MODE_LCD

391

.................................

帮忙支持一下,我改如何是好 谢谢!

pastedImage_0.png

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fulinux
Contributor IV

你好,请问一下你是怎么解决这个问题的,我的屏颜色不对,背光应该为黑色的,但却是绿色,你看图片:

P60512-190156.jpg

这是我的问题:uboot logo color is green

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b45499
NXP TechSupport
NXP TechSupport

Hi Zhilin,

In the script there is the flash screen define:

+#ifndef CONFIG_SPLASH_SCREEN

+#define CONFIG_UBOOT_LOGO_ENABLE

Here you need to modify the script adapt to your board design. Include the board name and configuration. About the u-boot logo you mentioned you can refer to the script you have download, there are .bmp files you can see, and in the script you can also see the

+#ifdef IPU_OUTPUT_MODE_LCD

......................

HDMI, LCD and LVDS different resolution mode. Here recommend you to read the script again.
Have a great day,
Dan

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Mark Correct  button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

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zhilinhuang
Contributor III

HI 补充一下, readme 文档,是写到 sd 的,那如果我想写的emmc 那又怎么写呢,uboot 和 和kernel 做如何修改。

dd the logo bmp file to SD card address 0x600000 and skip the 54 bytes bmp file header.

   1080P HDMI:

       sudo dd if=logo_1920x1080_32bpp.bmp of=/dev/sdc bs=1 seek=6291456 skip=54

   1024x768 LVDS:

       sudo dd if=logo_1024x768_24bpp.bmp of=/dev/sdc bs=1 seek=6291456 skip=54

   800x480 LCD:

       sudo dd if=logo_800x480_24bpp.bmp of=/dev/sdc bs=1 seek=6291456 skip=54

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b45499
NXP TechSupport
NXP TechSupport

Hi Zhilin,

The default download in the patch is to the SD card. About the emmc you can download by mfgtool, but you need to modify and configure the uxl file yourself. Here recommend you to download to SD card as our patch given.

Hope it can help you.

Best Regards

Dan

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zhilinhuang
Contributor III

Hi ,Dan Wang

好的,非常感谢,我尝试着修改一下。因为公司主控板是不定sd卡的。所以只能把它logo 写的emmc 里面了。 nor flash 是不可能了,太小了装不下这么大的图片。我在想不能增加一个emmc 分区 用来装logo 的数据。就像装 文件系统,和内核一样。这样可行吗

Have a good time

Huang

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b45499
NXP TechSupport
NXP TechSupport

Hi Zhilin,

About how to download it to emmc I have confirmed for you. You can reference to file "ucl2.xml" in MFGTool, there is example for how to use dd to burn the image files from PC to eMMC.
Have a great day,
Dan

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Mark Correct  button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

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wilsonchen
Contributor III

你好,

请问能否也发一份烧写bmp文件到emmc的办法给我呢?

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zhilinhuang
Contributor III

Hi ,Dan Wang

我补充一下,我发现了个bug ,下面我详细阐述一下

为我研究了很久,用排除法(内心是奔溃的) 发现这个和uboot的  bootargs 传送给内核的参数有关系,

当bootargs  的  video mode 设置为

            "video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24 ,bpp=16"   或者

"video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24,bpp=16 fb0base=0x27b00000 "

内核起来后,在文件系统运行Qt程序(强调,和qt程序没有关系,qt是好的)

发现都是正常的 显示如下,光滑正常不会出现晕色 且左右也不会出现抖动。

pastedImage_1.png

但是重点来了

同样的uboot, 同样的内核,同样的文件系统,同样的qt 应用

当bootargs  的  video mode 设置为

"video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24,bpp=16 fb0base=0x27b00000 fbmem=28M"

即,里面包含有 fbmem=28M 这个参数是,会出现于杂色和晕色,而已,图片会出现轻微的左右抖动。严重的影响了用户体验

不能理解出现左右抖动的原因。我一直没有找到解决的办法。

pastedImage_2.png

board-mx6q_sabresd.c 我找到了对应的代码   uboot 传递给内核参数的处理函数

static void __init fixup_mxc_board(struct machine_desc *desc, struct tag *tags,

2263                    char **cmdline, struct meminfo *mi)

2264 {

2265 #ifdef CONFIG_MX6_CLK_FOR_BOOTUI_TRANS

2266     char *str;

2267     struct tag *t;

2268     int i = 0;

2269     struct ipuv3_fb_platform_data *pdata_fb = sabresd_fb_data;

2270

2271     for_each_tag(t, tags) {

2272         if (t->hdr.tag == ATAG_CMDLINE) {

2273             str = t->u.cmdline.cmdline;

2274             str = strstr(str, "fbmem=");

2275             if (str != NULL) {

2276                 str += 6;

2277                 pdata_fb[i++].res_size[0] = memparse(str, &str);

2278                 while (*str == ',' &&

2279                     i < ARRAY_SIZE(sabresd_fb_data)) {

2280                     str++;

2281                     pdata_fb[i++].res_size[0] = memparse(str, &str);

2282                 }

2283             }

2284             /* Primary framebuffer base address */

2285             str = t->u.cmdline.cmdline;

2286             str = strstr(str, "fb0base=");

2287             if (str != NULL) {

2288                 str += 8;

2289                 pdata_fb[0].res_base[0] =

2290                         simple_strtol(str, &str, 16);

2291             }

2292             break;

2293         }

2294     }

2295 #endif

Have a good time

Huang

回复

操作

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b45499
NXP TechSupport
NXP TechSupport

Hi Zhilin,

The fbmem=28M is used in andorid BSP, here you are using linux BSP so it is not necessary to set it.

Have a nice day

Dan

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zhilinhuang
Contributor III

Hi ,Dan Wang

     非常感谢,我明白了!

Have a good time

Huang

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zhilinhuang
Contributor III

Hi ,Dan Wang

非常感谢,我研究一下。希望能成功!

Have a good time

Huang

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b45499
NXP TechSupport
NXP TechSupport

Hi Zhilin,

About the command you mentioned  "video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24 ,bpp=16"   and

"video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24,bpp=16 fb0base=0x27b00000 ".

The "video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24 ,bpp=16" is used for linux BSP and "video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24,bpp=16 fb0base=0x27b00000 " is for andorid BSP.

Have a nice day

Dan

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zhilinhuang
Contributor III

Hi ,Dan Wang

     非常感谢,期待你的回复。问题还没有解决:smileyhappy:!

Have a good time

Huang

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zhilinhuang
Contributor III

Hi ,Dan Wang

非常感谢!

我打的补丁是L3.0.35_4.1.0_uboot_logo_keep_patch_2013-11-22.zip

pastedImage_0.png

我解压出来看到有个readme 文档

是按照里面的方法操作的。

按照您的意思的,如果linux系统 uoboot logo 是不能一直显示到内核结束了。

因为设置video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24 ,bpp=16 后 内核会重新初始化ipu,uboot 过度到kernel 是会黑屏的  但是显示正常。

那这么解决这个问题呢,我想保持一个logo不变一直显示到内核结束

下个这个参数是可以 但是,运行qt后 会左右抖动。 纠结啊。难道没有办法了吗

video=mxcfb0:dev=ldb,LDB-XGA,if=RGB24,bpp=16 fb0base=0x27b00000

我看到readme 里面描述有介绍

1. Description

    1) Support HDMI, LVDS and LCD output in UBoot.

    2) Support UBoot logo keep from uboot to Linux rootfs. // 它的意思也是一直显示到rootfs 啊

    3) For HDMI, both 720P and 1080P mode were supported.

    4) For LVDS, 1024x768 and 1080P dual channel panels were supported.

    5) The logo file can be a 32/24/16 bpp bmp file.

我搞这个都搞了2个礼拜了。。。。。。。

Have a good time

Huang

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b45499
NXP TechSupport
NXP TechSupport

Hi Zhilin,

I am not sure about it and I will confirm it for you. Please have a wait.

Have a nice day

Dan

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zhilinhuang
Contributor III

你好,之前就是按照了你说的这种方法,可能每个开发板不一样、,我修改了一些其他的配置,让显示rgb 是正常的。图片如下,but ,我想显示的是一张图片logo,我改做如何修改。

pastedImage_0.png

显示 红 绿蓝的代码 如下,

1011 #ifdef CONFIG_UBOOT_LOGO_ENABLE

1012     unsigned int size = DISPLAY_WIDTH * DISPLAY_HEIGHT * (DISPLAY_BPP / 8);

1013     unsigned char * pData;

1014     unsigned int start, count;

1015     int i, bmpReady = 0;

1016     int mmc_dev = get_mmc_env_devno();

1017     struct mmc *mmc = find_mmc_device(mmc_dev);

1018

1019     pData = (unsigned char *)CONFIG_FB_BASE;

1020     //  memcpy((char *)pData, (char *)myzr_bmp_logo, \

1021                   myzr_bmp_logo_size);

1022

1023

1024     if (mmc)    {

1025         if (mmc_init(mmc) == 0) {

1026             start = ALIGN(UBOOT_LOGO_BMP_ADDR, mmc->read_bl_len) / mmc->read_bl_len; 

1027             count = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;

1028             mmc->block_dev.block_read(mmc_dev, start, count, pData);  //这里面是图片的数据吗 ???????????????????????????????????????  如果我要显示一张图片我改如何做呢,谢谢Dan Wang   ,Do you help me ?

1029             bmpReady = 1;

1030         }

1031     }

1032

1033     if (bmpReady == 0) { // 这里是显示 红绿蓝的图片

1034         // Fill RGB frame buffer

1035         // Red

1036         for (i = 0; i < (DISPLAY_WIDTH * DISPLAY_HEIGHT * (DISPLAY_BPP / 8) / 3); i += (DISPLAY_BPP / 8)) {

1037 #if (DISPLAY_BPP == 16)

1038             pData[i + 0] = 0x00;

1039             pData[i + 1] = 0xF8;

1040 #else

1041             pData[i + 0] = 0x00;

1042             pData[i + 1] = 0x00;

1043             pData[i + 2] = 0xFF;

1044 #endif

1045         }

1046

1047         // Green

1048         for (; i < (DISPLAY_WIDTH * DISPLAY_HEIGHT * (DISPLAY_BPP / 8) / 3) * 2; i += (DISPLAY_BPP / 8)) {

1049 #if (DISPLAY_BPP == 16)

1050             pData[i + 0] = 0xE0;

1051             pData[i + 1] = 0x07;

1052 #else

1053             pData[i + 0] = 0x00;

1054             pData[i + 1] = 0xFF;

1055             pData[i + 2] = 0x00;

1056 #endif

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b45499
NXP TechSupport
NXP TechSupport

Hi Zhilin,

You can read again the patch and all the reply under the thread Patch to support uboot logo keep from uboot to kernel for NXP Linux and Android BSP (HDMI, LCD and L... . And you'd better check your setting on your screen.

Have a nice day

Dan

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b45499
NXP TechSupport
NXP TechSupport

Hi Zhilin,

In the readme document you can see the introduction on the logo file:

The logo file can be a 32/24/16 bpp bmp file, and you can see the logo bmp file in the patch directory. You can generate your logo file to the format, then modify the information about the logo file in the patch.

For the logo picture display you can refer to the following section of the patch:

+#ifndef CONFIG_SPLASH_SCREEN

+#define CONFIG_UBOOT_LOGO_ENABLE

+

+#ifdef CONFIG_UBOOT_LOGO_ENABLE

+    // Select one of the output mode

+    #define IPU_OUTPUT_MODE_HDMI

+//    #define IPU_OUTPUT_MODE_LVDS

+//    #define IPU_OUTPUT_MODE_LCD

+

+    #define CONFIG_FB_BASE    (TEXT_BASE + 0x300000)

+    #define UBOOT_LOGO_BMP_ADDR 0x00600000

+

+    #define CONFIG_IMX_PWM

+    #define IMX_PWM1_BASE     PWM1_BASE_ADDR

+    #define IMX_PWM2_BASE     PWM2_BASE_ADDR

+

+#ifdef IPU_OUTPUT_MODE_HDMI

+/*

+    // For HDMI, 1280*720 resolution

+    #define DISPLAY_WIDTH    1280

+    #define DISPLAY_HEIGHT    720

+    #define DISPLAY_BPP        32

+    #define DISPLAY_IF_BPP    24  // RGB24 interface

+

+    #define DISPLAY_HSYNC_START    220

+    #define DISPLAY_HSYNC_END        110

+    #define DISPLAY_HSYNC_WIDTH    40

+

+    #define DISPLAY_VSYNC_START    20

+    #define DISPLAY_VSYNC_END        5

+    #define DISPLAY_VSYNC_WIDTH    5

+

+    #define DISPLAY_PIX_CLOCK    74250000  //(DISPLAY_HSYNC_START + DISPLAY_HSYNC_END + DISPLAY_HSYNC_WIDTH + DISPLAY_WIDTH) * (DISPLAY_VSYNC_START + DISPLAY_VSYNC_END + DISPLAY_VSYNC_WIDTH + DISPLAY_HEIGHT) * refresh rate (60Hz)

..........

Best Regards

Dan

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