Re: flicker free booting

[Bill Gatliff <bgat@billgatliff.com>]

Robert Schwebel wrote:
> A second step could be:
>
> - Have this initial framebuffer as /dev/fb0 (mem at the end of RAM)
> - In order to avoid flicker, the driver sets up a 2nd framebuffer,
>   in dynamically allocated memory -> /dev/fb1. This framebuffer
>   continues to display the splash image (or an animation). Switching
>   from fb0 -> fb1 is done during VSync.
>   

What about double-buffering fb0 instead?  That's how Android works.

> Drivers which see the framebuffer= parameter would have to skip their
> hardware initialisation step.
>   

Actually, I'd rather that drivers look at the hardware itself, and 
verify that the configuration matches what the parameter specifies 
before making changes.  That way you could use framebuffer= to 
communicate the desired setup to the driver in cases where the hardware 
wasn't already initialized.



-- 
Bill Gatliff
bgat@billgatliff.com