for Tianocore, use the latter only. Needs to be a 24bpp windows BMP, no larger than the width of the screen and 75% of the height (the image is centered 38.2% down from top as per BGRT spec). Gimp can be used too but likely will have a pallette shift if a non B&W image used 

On Thu, Nov 26, 2020, 11:27 AM Andy Pont <andy.pont@sdcsystems.com> wrote:
Hello,

Using the VBT route for graphics initialisation and TianoCore as the
payload gives two options within .config for splash screen:

CONFIG_BOOTSPLASH:
This option shows a graphical bootsplash screen. The graphics are loaded
from the CBFS file bootsplash.jpg.

CONFIG_TIANOCORE_BOOTSPLASH_IMAGE:
Select this option if you have a bootsplash image that you would like to
be used. If this option is not selected, the default coreboot logo
(European Brown Hare) will used.

Do I need to define both?  What are the requirements for the images in
terms of size, colour depth, etc?

-Andy.

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