[U-Boot-Users] [RFC] Splash image

[Rodolfo Giometti <giometti@enneenne.com>]

On Thu, Jul 19, 2007 at 11:52:40AM +0200, Rodolfo Giometti wrote:
> On Thu, Jul 19, 2007 at 11:47:59AM +0200, Wolfgang Grandegger wrote:
> > Rodolfo Giometti wrote:
> >> On Wed, Jul 18, 2007 at 06:17:12PM +0200, Wolfgang Grandegger wrote:
> >>> Rodolfo Giometti wrote:
> >>>> On Wed, Jul 18, 2007 at 06:03:54PM +0200, Wolfgang Grandegger wrote:
> >>>>> What color format do you want to support?
> >>>> 16 bpp
> >>> Then use "drivers/cfb_console.c" as it already supports that format. 
> >>> Adapting the interface to pxafb should not be a big deal.
> >> In order to adapt pxafb support to "drivers/cfb_console.c" I think I
> >> should move cpu/pxa/pxafb.c to drivers/pxafb.c adapting the internal
> >> functions to use video_hw_init() and video_set_lut(). Is that right?
> >
> > I think so and drivers is also the correct place for pxafb.c.
> 
> Ok, I'll propose a patch ASAP. However, simply moving the file from
> cpu/pxa/ to drivers/ shouldn't break any code but modifying it in
> order to support cfb_console.c will do.
> 
> What do you suggest in order to do the right steps? Maybe should I
> remove lcd.c support before doing my modifications?

Just to gain some time and doing some tests I did the modifications in
order to support splash screen into cfb_console for PXAFB.

I noticed that I have to disable some code regarding LCD otherwise
there are doubled code execution and several incongruences, see here:

   static int bmp_display(ulong addr, int x, int y)
   {
   #if defined(CONFIG_LCD)
           extern int lcd_display_bitmap (ulong, int, int);

           return (lcd_display_bitmap (addr, x, y));
   #elif defined(CONFIG_VIDEO)
           extern int video_display_bitmap (ulong, int, int);
           return (video_display_bitmap (addr, x, y));
   #else
   # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
   #endif
   }

This code seems OK but if you doesn't define CONFIG_LCD you cannot get
framebuffer memory here (lib_arm/board.c):

   #ifdef CONFIG_LCD
   #       ifndef PAGE_SIZE
   #         define PAGE_SIZE 4096
   #       endif
           /*
            * reserve memory for LCD display (always full pages)
            */
           /* bss_end is defined in the board-specific linker script */
           addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
           size = lcd_setmem (addr);
           gd->fb_base = addr;
   #endif /* CONFIG_LCD */

Ok, I can add a defined() but this is not the right solution IMHO.

I wish to remove LCD support at all... are you agree? Any suggestions
in order to which steps I should do for better result?

Thanks in advance,

Rodolfo

-- 

GNU/Linux Solutions                  e-mail:    giometti at enneenne.com
Linux Device Driver                             giometti at gnudd.com
Embedded Systems                     		giometti at linux.it
UNIX programming                     phone:     +39 349 2432127