Revision as of 08:08, 4 October 2023

U-Boot Logo Customization

ROM-5721

MIPI-DSI to LVDS (AUO/G070VW01)

1. Change the dtb file used from imx8mm-rom5721-a1.dtb to imx8mm-rom5721-a1-dsi2lvds-g070vw01.dtb by modify CONFIG_DEFAULT_DEVICE_TREE in defconfig.

CONFIG_DEFAULT_DEVICE_TREE="imx8mm-rom5721-a1-dsi2lvds-g070vw01"

2. Enable some options in defconfig.

CONFIG_DM_PWM=y
CONFIG_BACKLIGHT_PWM=y
CONFIG_PWM_IMX=y
CONFIG_VIDEO_TC358775=y
CONFIG_ADVANTECH_LOGO=y

3. Put logo bmp file into the directory "tools/logos/".
4. Overwrite LOGO_BMP definition at tools/Makefile to specific customer's logo.

MIPI-DSI (AUO/G101UAN02)

1.  TODO

Kernel Solution

Modify the drivers/video/logo/logo_linux_clut224.ppm

客製化logo 圖片儲存成png格式

1. pngtopnm linuxlogo.png > linuxlogo.pnm // **首次使用者需要apt-get install netpbm**
   # pnmquant 224 linuxlogo.pnm > linuxlogo224.pnm // **轉成224色**
   # pnmtoplainpnm linuxlogo224.pnm > linuxlogo224.ppm

mv linuxlogo224.ppm logo_linux_clut224.ppm
logo_linux_clut224.ppm替換kernel/drivers/video/logo/logo_linux_clut224.ppm

1、裝載pngtopnm工具。
$ sudo apt-get install netpbm
注：裝載完以后就會有pngtopnm,pnmquant,pnmtoplainpnm三個工具。

2、選取logo的圖片：
　首先選取一個自己喜歡的圖片，然后通過GIMP軟體將該圖片儲存為.png格式，
　比如儲存為linuxlogo.png.

3、制作.ppm格式的圖片：
$ pngtopnm linuxlogo.png > linuxlogo.pnm
$ pnmquant 224 linuxlogo.pnm > linuxlogo224.pnm
$ pnmtoplainpnm linuxlogo224.pnm > linuxlogo224.ppm

或者
$bmptoppm linuxlogo.bmp > linuxlogo.ppm //生成ppm
$ppmquant 224 linuxlogo.ppm > linuxlogo224.ppm //轉換成224色彩
$pnmnoraw linuxlogo224.ppm > linuxlogo224.ppm //轉換成ascii格式

4、替代原有的圖片。
$ make clean SUB_DIR=./drivers/video/logo/ //來清除logo目錄下的.c和.o檔案
注：apus板子的圖片名叫logo_dec_clut224.ppm，所以只要用第三步生成的圖片替代即可。

Yocto Openembedded Solution

Change Yocto Openembedded Logo Solution

1. Download psplash：git clone git://git.yoctoproject.org/psplash

2. Change Image to .c file and .h file  : ./make-image-header.sh xxlogo.h POKY ,then will be create Image file xxlogo.c , xxlogo.h

3. Chage xxlogo.c : #include "psplash-poky-img.h change #include "xxlogo.h"

4. Create autogen.sh shell script, will be create Makefile.

Example

 #!/bin/bash 
acloal 
autoheader
automake
autoconf

7. Run "make" and create the "psplash" "psplash-write".

8. Copy psplash and psplash-write to rootfs in /usr/bin/

9. If you will be remove "progress bar", please remark the code.

Remove psplash_draw_progress function define in psplash.c. In psplash.c.

/* Draw progress bar border */
/*
  psplash_fb_draw_image (fb,
                          (fb->width  - BAR_IMG_WIDTH)/2,
                          SPLIT_LINE_POS(fb),
                          BAR_IMG_WIDTH,
                          BAR_IMG_HEIGHT,
                          BAR_IMG_BYTES_PER_PIXEL,
                          BAR_IMG_ROWSTRIDE,
                          BAR_IMG_RLE_PIXEL_DATA);
*/