RFC: Force a 2s delay on startup to allow bypassing /dev/env0.
s.hauer at pengutronix.de
Sun May 6 14:08:35 EDT 2012
On Sun, May 06, 2012 at 07:50:14PM +0200, Krzysztof Halasa wrote:
> Sascha Hauer <s.hauer at pengutronix.de> writes:
> > Being able to interrupt before environment processing is a good thing to
> > have, the delay though is not acceptable because it would increase the
> > boot time on some systems by 400%. It should work without the delay
> > aswell.
> Actually the delay is a bit problematic for me as well.
> Unfortunately the boot code has to initialize the serial port, clearing
> the incoming FIFO. This means I can't "queue" the ^C character, barebox
> has to wait for it (maybe not for the whole 2 seconds).
> Or am I mistaken?
On my boards I can still interrupt even with autoboot_timeout=0. Have
you tried it? It may be a bit dependent on the UART driver, I don't
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
More information about the barebox