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Date: Tue, 29 May 2007 12:16:45 -0400
From: "Andrey Shuvikov" <mr.hyro@gmail.com>
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References: <24393ae80705172026u6194f11esc525d52470aa71f9@mail.gmail.com>
	<200705251706.23021.jhb@freebsd.org>
	<24393ae80705261014y7fd9ffc2qff2743915d97f01c@mail.gmail.com>
	<200705291137.49772.jhb@freebsd.org>
Subject: Re: Computer hangs on reboot
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On 5/29/07, John Baldwin <jhb@freebsd.org> wrote:
> On Saturday 26 May 2007 01:14:52 pm Andrey Shuvikov wrote:
> > I tried to add some debug output to cpu_reset_real() code:
> >
> >   printf("cpu_reset_real(): before keyboard reset\n");
> >   outb(IO_KBD + 4, 0xFE);
> >   printf("cpu_reset_real(): after keyboard reset\n");
> >
> > The last two lines I see on the screen when I try to reboot are:
> >
> > cpu_reset_real(): before keyboard reset
> > c
> >
> > So the computer is halted but doesn't go to reboot.
>
> So what if you disable the keyboard reset and let the other methods happen?
>
> --
> John Baldwin
>

I tried to set BROKEN_KEYBOARD_RESET option but nothing changed
(except that I didn't see these debugging messages, obviously). Is it
possible that keyboard controller issues the reset signal but the CPU
waits for something? Or reset pin is disabled somehow?