mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 16:39:35 +00:00
db1b79b886
Enable support for loading a splash image from within a FIT image. The image is assumed to be generated with mkimage -E flag to hold the data external to the FIT. Signed-off-by: Tomas Melin <tomas.melin@vaisala.com> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
31 lines
1.6 KiB
Text
31 lines
1.6 KiB
Text
---------------------------------------------------------------------
|
|
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. Struct splash_location field 'name' should match the splash image
|
|
name within the FIT and the FIT should start at the 'offset' field address in
|
|
the specified storage.
|