Re: flicker free booting

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Robert Schwebel wrote:
The question I've been looking at is: do sub-second boot times make
all this a moot point? After all, if you can bring up your graphics
driver in a fraction of a second and use *it* to display a splash
screen, it seems like it would meet your need to give almost immediate
feedback to users that the system is alive.

Yup, that would be cool.

However, on flash-based systems in the ARM926 / 200...400 MHz class
(which is still quite common) the boot time up to the point where the
penguin appears is still about 3...4 s [1] which is too long. So I
suspect until systems become faster, we'll have no other choice than
such as scenario.

Could your bootloader pre-initialize the graphics hardware to the same mode that the Linux driver will ultimately select, and then throw up a static graphic? That would give you some output until the driver itself comes online.

And if the driver was in a demand-loaded module, then the static image wouldn't disappear until just before the application that does the animation was ready to start drawing.



b.g.

--
Bill Gatliff
bgat@xxxxxxxxxxxxxxx

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