1 --------------------------------------------------------------------- 2 Splash Screen 3 --------------------------------------------------------------------- 4 The splash_screen_prepare() function is a weak function defined in 5 common/splash.c. It is called as part of the splash screen display 6 sequence. It gives the board an opportunity to prepare the splash 7 image data before it is processed and sent to the frame buffer by 8 U-Boot. Define your own version to use this feature. 9 10 CONFIG_SPLASH_SOURCE 11 12 Use the splash_source.c library. This library provides facilities to declare 13 board specific splash image locations, routines for loading splash image from 14 supported locations, and a way of controlling the selected splash location 15 using the "splashsource" environment variable. 16 17 splashsource works as follows: 18 - If splashsource is set to a supported location name as defined by board code, 19 use that splash location. 20 - If splashsource is undefined, use the first splash location as default. 21 - If splashsource is set to an unsupported value, do not load a splash screen. 22 23 A splash source location can describe either storage with raw data, a storage 24 formatted with a file system or a FIT image. In case of a filesystem, the splash 25 screen data is loaded as a file. The name of the splash screen file can be 26 controlled with the environment variable "splashfile". 27 28 To enable loading the splash image from a FIT image, CONFIG_FIT must be 29 enabled. Struct splash_location field 'name' should match the splash image 30 name within the FIT and the FIT should start at the 'offset' field address in 31 the specified storage. 32
