[U-Boot-Users] LCD on pxa255

[himba <himba@siol.net>]

Wolfgang Denk wrote:

> 
> Put:
> 
> #define CONFIG_PREBOOT  "setenv stdout serial;setenv stdin serial"
> 
> in your board config file :-)
> 

Hmm, It does not do what is expected. I could stick with 
late_board_init() but it leaves
In:	serial
out:	lcd
err:	lcd

printed over test pattern...

> 
> Than have a look at our linux-2.4 kernel tree; it make sLinux use the
> same memory for framebuffer as used by U-Boot,  so  you  can  have  a
> steady  image  from a few milliseconds after power-on until the Linux
> GUI takes over :-) [Of course  you  can  also  load  "boot  progress"
> screels in U-Boot using the "bmp" command...
> 

Great news! I've been poking through edlk3.0 kernel source and tried 
to diff it against vanilla 2.4.24, but I couldn't find/spot needed 
info about fb. It must be 'cause newbie (me) isn't really familiar 
with kernel... Could you point it out, please ? :)

> 
>>Maybe it would be helpfull to others if we sent patches
>>to Wolfgang...
> 
> 
> Sure that would be helpful. I have only that many different boards in
> our lab, and even stricter limits on available time :-(

Right, first I will try the display under linux more extensive - tune 
up some settings - then I will mail the patch for u-boot to this list!


regards, himba