Date: Tue, 5 Nov 2002 14:39:14 -0800 (PST) From: Dave McCammon <davemac11@yahoo.com> To: freebsd-questions@freebsd.org Subject: Re: Junior hacker assignment :o Message-ID: <20021105223914.64779.qmail@web14802.mail.yahoo.com> In-Reply-To: <20021105210834.88642.qmail@web14807.mail.yahoo.com>
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--- Dave McCammon <davemac11@yahoo.com> wrote:
> --- Mike Hogsett <hogsett@csl.sri.com> wrote:
> >
> >
> > Look in /usr/src/sys/kern/kern_shutdown.c
> >
> > static void
> > shutdown_halt(void *junk, int howto) {
> > ...
> > }
> >
> > Looks interesting.
> >
> > - Mike
> >
> > > Hi,
> > >
> > > --- Mike Hogsett <hogsett@csl.sri.com> wrote:
> > > > Well whatever function the kernel is in while
> it
> > > > loops, polling the
> > > > keyboard asking "press any key to reboot"
> could
> > have
> > > > additional logic for
> > > > a countdown timer to reboot.
> > >
> > > Great!
> > >
> > > > How and where to do this? I don't know.
> > >
> > > Not so great ;)
> > >
> > > Thanks a lot,
> > > Carlos.
> Not a real programmer but....
>
> I wonder if adding the following (taken from
> shutdown_reset lines in kern_shutdown.c)
> DELAY(1000000);
> cpu_reset();
>
> to the following in the cpu_halt(); area would work.
>
> You would have to modify the delay time.
>
> /*
> * If the shutdown was a clean halt, behave
> accordingly.
> */
> static void
> shutdown_halt(void *junk, int howto)
> {
> if (howto & RB_HALT) {
> printf("\n");
> printf("The operating system has halted.\n");
> printf("Please press any key to reboot.\n\n");
> switch (cngetc()) {
> case -1: /* No console, just die */
> cpu_halt();
> /* NOTREACHED */
> default:
> howto &= ~RB_HALT;
> break;
> }
> }
> }
DUH!! on my part. My previous response was a little
overboard.
Why not just increase the delay to close to your
ups battery's runtime.
(from kern_shutdown.c, starts on line 380)
/*
* Everything done, now reset
*/
static void
shutdown_reset(void *junk, int howto)
{
printf("Rebooting...\n");
DELAY(1000000); /* wait 1 sec for printf's to
complete and be read */
/* cpu_boot(howto); */ /* doesn't do anything
at the moment */
cpu_reset();
/* NOTREACHED */ /* assuming reset worked */
}
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