Difference between revisions of "Change boot logo"

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custom logo by the following method:
 
custom logo by the following method:
  
  
The gumstix-fb-logo.patch is a diff between a custom image and the default Penguin 'logo_linux_clut224.ppm'. This image can be found in (for a Verdex):
+
The gumstix-fb-logo.patch is a diff between a custom image and the default Penguin 'logo_linux_clut224.ppm'.  
  
 +
This image can be found in (for a Verdex):
  
 
gumstix-oe/tmp/work/gumstix-custom-verdex-angstrom-linux-gnueabi/gumstix-kernel-2.6.21-r1/linux-2.6.21/drivers/video/logo
 
gumstix-oe/tmp/work/gumstix-custom-verdex-angstrom-linux-gnueabi/gumstix-kernel-2.6.21-r1/linux-2.6.21/drivers/video/logo
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After you implement your patch, do:
 
After you implement your patch, do:
 
  
 
bitbake gumstix-kernel
 
bitbake gumstix-kernel
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If the compile fails, it's likely due to a problem with your PPM. In Gimp, you need to set the palette to 224 colors and make sure you save it as ascii.  
 
If the compile fails, it's likely due to a problem with your PPM. In Gimp, you need to set the palette to 224 colors and make sure you save it as ascii.  
 
  
  
 
[[Category:How_to_-_gui]]
 
[[Category:How_to_-_gui]]
 +
 +
 +
----
 +
 +
A more detailed description:
 +
 +
 +
== '''Custom Boot Logo/Image for Verdex''' ==
 +
To implement a custom image or logo that will show when the Verdex is booting up, you need to create a patch using ''diff''.
 +
 +
The patch is a ''diff'' between the default linux Penguin logo and the new image you want to display.
 +
The default linux Penguin logo is found in the following directory:
 +
 +
  .../gumstix-oe/tmp/work/gumstix-custom-verdex-angstrom-linux-gnueabi/gumstix-kernel-2.6.21-r1/linux-2.6.21/drivers/video/logo
 +
 +
It's file name is:  logo_linux_clut224.ppm
 +
 +
First steps are to start off with a clean gumstix-kernel, so do the following:
 +
                                                                                                               
 +
'''
 +
    bitbake -c clean gumstix-kernel
 +
    bitbake -c unpack gumstix-kernel
 +
'''                                                                                                               
 +
 +
 +
Now, 5 steps to create the patch using diff.  Do the following:
 +
 +
0.  Make sure the logo_linux_clut224.ppm and your new image are in the same directory (or type the full path to each)
 +
 +
1.  Use the diff tool:
 +
 
 +
'''
 +
    diff -c logo_linux_clut224.ppm new_image_logo.ppm > my-logo.patch
 +
'''
 +
 +
2.  Open the newly created my-logo.patch in a text editor, and add the following 2 lines at the head of the file
 +
 +
'''                                                                                                               
 +
    Index: linux-2.6.21gum/drivers/video/logo/logo_linux_clut224.ppm
 +
    ===================================================================
 +
'''                                                                                                               
 +
 +
3.  Save the my-logo.patch with those two lines added
 +
 +
4.  Copy the my-logo.patch to the following directories, and update the name of the patch:
 +
                                                                                                               
 +
'''
 +
    cp my-logo.patch .../gumstix-oe/com.gumstix.collection/packages/linux/gumstix-kernel-2.6.21/gumstix-fb-logo.patch
 +
    cp my-logo.patch .../gumstix-oe/org.openembedded.snapshot/packages/linux/linux-2.6.21/gumstix-fb-logo.patch
 +
'''                                                                                                               
 +
 +
Now that you have your patch in the correct directories, rebuild the kernel:
 +
                                                                                                             
 +
'''
 +
    bitbake gumstix-kernel
 +
'''   
 +
 +
Finally, copy the kernel to your verdex using the steps given in this link:
 +
http://gumstix.org/software-development/yocto-project/190-verdex-svn-repository.html
 +
[http://gumstix.org/software-development/yocto-project/190-verdex-svn-repository.html]
 +
 +
It isn't necessary to reload the filesystem, so you can skip down to the end where you just copy over the kernel.
 +
 +
 +
A few notes:
 +
*  Using diff doesn't produce the two header lines.  The bitbake will fail without those two lines.
 +
*  I've only tried this with image sizes 480 px wide and less than or equal 216 px high
 +
*  Make sure to save your new logo using GIMP as a .ppm ASCII file, with the Image > Mode > Indexed set for Maximum number of colors as 224

Latest revision as of 11:18, 2 May 2014

custom logo by the following method:


The gumstix-fb-logo.patch is a diff between a custom image and the default Penguin 'logo_linux_clut224.ppm'.

This image can be found in (for a Verdex):

gumstix-oe/tmp/work/gumstix-custom-verdex-angstrom-linux-gnueabi/gumstix-kernel-2.6.21-r1/linux-2.6.21/drivers/video/logo


You'll need the original image, so you can perform the following steps to get a pre-patched kernel:


bitbake -c clean gumstix-kernel

bitbake -c unpack gumstix-kernel


After you implement your patch, do:

bitbake gumstix-kernel


to finish the build.


You can then copy uImage over, and hopefully have a pretty, custom logo.


If the compile fails, it's likely due to a problem with your PPM. In Gimp, you need to set the palette to 224 colors and make sure you save it as ascii.



A more detailed description:


Custom Boot Logo/Image for Verdex

To implement a custom image or logo that will show when the Verdex is booting up, you need to create a patch using diff.

The patch is a diff between the default linux Penguin logo and the new image you want to display. The default linux Penguin logo is found in the following directory:

  .../gumstix-oe/tmp/work/gumstix-custom-verdex-angstrom-linux-gnueabi/gumstix-kernel-2.6.21-r1/linux-2.6.21/drivers/video/logo 

It's file name is: logo_linux_clut224.ppm

First steps are to start off with a clean gumstix-kernel, so do the following:

   bitbake -c clean gumstix-kernel
   bitbake -c unpack gumstix-kernel


Now, 5 steps to create the patch using diff. Do the following:

0. Make sure the logo_linux_clut224.ppm and your new image are in the same directory (or type the full path to each)

1. Use the diff tool:

   diff -c logo_linux_clut224.ppm new_image_logo.ppm > my-logo.patch

2. Open the newly created my-logo.patch in a text editor, and add the following 2 lines at the head of the file

   Index: linux-2.6.21gum/drivers/video/logo/logo_linux_clut224.ppm
   ===================================================================

3. Save the my-logo.patch with those two lines added

4. Copy the my-logo.patch to the following directories, and update the name of the patch:

   cp my-logo.patch .../gumstix-oe/com.gumstix.collection/packages/linux/gumstix-kernel-2.6.21/gumstix-fb-logo.patch
   cp my-logo.patch .../gumstix-oe/org.openembedded.snapshot/packages/linux/linux-2.6.21/gumstix-fb-logo.patch

Now that you have your patch in the correct directories, rebuild the kernel:

   bitbake gumstix-kernel

Finally, copy the kernel to your verdex using the steps given in this link: http://gumstix.org/software-development/yocto-project/190-verdex-svn-repository.html [1]

It isn't necessary to reload the filesystem, so you can skip down to the end where you just copy over the kernel.


A few notes:

  • Using diff doesn't produce the two header lines. The bitbake will fail without those two lines.
  • I've only tried this with image sizes 480 px wide and less than or equal 216 px high
  • Make sure to save your new logo using GIMP as a .ppm ASCII file, with the Image > Mode > Indexed set for Maximum number of colors as 224