Change boot logo

2014-05-02T18:18:45Z

Ljaisd:

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.

[[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

Change boot logo

2014-05-01T16:30:55Z

Ljaisd: Requesting additional information in order to use the information in this topic successfully.

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'.

'''''PLEASE EXPLAIN HOW TO CREATE THE PATCH USING diff'''''

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:

'''''PLEASE EXPLAIN WHAT IS MEANT BY "implement your patch"'''''

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.

'''''THIS HOW-TO WILL BE VERY USEFUL IF MORE DETAIL IS ADDED. PLEASE PROVIDE DETAILS!!!'''''

[[Category:How_to_-_gui]]

Gumstix User Wiki - User contributions [en]

Change boot logo

Change boot logo