]>
Commit | Line | Data |
---|---|---|
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. The FIT image has to start at the 'offset' field address in the | |
30 | selected splash location. The name of splash image within the FIT shall be | |
31 | specified by the environment variable "splashfile". | |
32 | ||
33 | In case the environment variable "splashfile" is not defined the default name | |
34 | 'splash.bmp' will be used. |