Difference between revisions of "U-Boot Splash Screen"
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* Activate LCD in U-Boot: | * Activate LCD in U-Boot: | ||
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| − | BIOS> setenv videomode video=ctfb:x:800,y:480,depth:18,pclk: | + | BIOS> setenv videomode video=ctfb:x:800,y:480,depth:18,pclk:33033,le:8,ri:4,up:2,lo:4,hs:64,vs:4,sync:0,vmode:0 |
</pre> | </pre> | ||
Revision as of 16:35, 18 January 2017
Page under construction...
Informations on this page are not guaranteed !!
Introduction
On this page you will learn how to activate LCD support in U-Boot and display a Splash Screen at boot. The following instructions have only be tested on OPOS6UL.
Installation
- Save your image as BMP file (in Gimp use Run-Length (RLE) encoding, no alpha channel and no color informations (compatibility options))
- Activate LCD in U-Boot:
BIOS> setenv videomode video=ctfb:x:800,y:480,depth:18,pclk:33033,le:8,ri:4,up:2,lo:4,hs:64,vs:4,sync:0,vmode:0
Test it
BIOS> tftpboot ${loadaddr} xxx.bmp
BIOS> bmp info ${loadaddr}
Image size : 296 x 72
Bits per pixel: 8
Compression : 0
BIOS> bmp display ${loadaddr} 100 50
Deploy it
BIOS> setenv splashimage 0x80000000 BIOS> setenv splashfile /boot/Logo_800x480.bmp BIOS> setenv splashsource mmc_fs
