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- Splash Screen
- ---------------------------------------------------------------------
- The splash_screen_prepare() function is a weak function defined in
- common/splash.c. It is called as part of the splash screen display
- sequence. It gives the board an opportunity to prepare the splash
- image data before it is processed and sent to the frame buffer by
- U-Boot. Define your own version to use this feature.
- CONFIG_SPLASH_SOURCE
- Use the splash_source.c library. This library provides facilities to declare
- board specific splash image locations, routines for loading splash image from
- supported locations, and a way of controlling the selected splash location
- using the "splashsource" environment variable.
- splashsource works as follows:
- - If splashsource is set to a supported location name as defined by board code,
- use that splash location.
- - If splashsource is undefined, use the first splash location as default.
- - If splashsource is set to an unsupported value, do not load a splash screen.
- A splash source location can describe either storage with raw data, a storage
- formatted with a file system or a FIT image. In case of a filesystem, the splash
- screen data is loaded as a file. The name of the splash screen file can be
- controlled with the environment variable "splashfile".
- To enable loading the splash image from a FIT image, CONFIG_FIT must be
- enabled. The FIT image has to start at the 'offset' field address in the
- selected splash location. The name of splash image within the FIT shall be
- specified by the environment variable "splashfile".
- In case the environment variable "splashfile" is not defined the default name
- 'splash.bmp' will be used.
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