How to change uboot splash image

The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

1- Get image that you want to show in resolution smaller than your display resolution.

2- Open the image using GIMP graphic application.

3- Save the image using "save as" option.

4- In the select box "Select File Type (by Extension)" select the format "c source code"

5- Then you will get one windows with some options, in this window deselect all options (Use glibs types, use macros instead of struct, Use 1 byte run-length-encoding, Save alpha channel)

6- Then save this file (changing the file extension from .c to .h) to

$DEVDIR/bootloader/uboot.*/src/board/davinci/common

7- Change the variable value CONFIG_SPLASH_LOGO_FILE with the name of file used above. The CONFIG_SPLASH_LOGO_FILE configuration setting can be found in the Splash Screen section in your board file in the directory

$DEVDIR/bootloader/uboot.*/src/include/configs

8- Clean and compile the bootloader

The form of the image-file must be similar to:

/* GIMP RGB C-Source image dump (image.c) */

static const struct {
  unsigned int          width;
  unsigned int          height;
  unsigned int          bytes_per_pixel; /* 3:RGB, 4:RGBA */ 
  unsigned char         pixel_data[200 * 100 * 3 + 1];
} gimp_image = {
  200, 100, 3,
  "(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306"
  "(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306"
  "(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306"
  "(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306(\237\306"

Remember that normally the bootloader modifications are made using patches.