Trimming the default /boot/device.hints
jhb at freebsd.org
Fri Feb 6 10:02:19 PST 2009
On Friday 06 February 2009 12:05:13 pm Andriy Gapon wrote:
> on 06/02/2009 18:55 John Baldwin said the following:
> > On Friday 06 February 2009 11:43:09 am John Baldwin wrote:
> >> On Friday 06 February 2009 10:22:35 am Andriy Gapon wrote:
> >>> on 06/02/2009 16:37 John Baldwin said the following:
> >>>> Yes, it only needs the hint for it to be a console device.
> >>> I am slightly confused as to how that hint works then, it's not like a
> >>> standard isa hint it seems.
> >>> Can it somehow be built-in (into the code)?
> >> Specifically, look at sc_cnprobe() in sys/dev/syscons/syscons.c. It
> >> sc_cons_get_priority() routine that on x86 maps lives in
> >> sys/isa/syscons_isa.c. This checks for a syscons hint. Changing it to
> >> always assume a unit 0 would probably allow this to work.
> > Something like this (untested):
> I am not sure, but maybe, just in case, also add
> sc_get_softc(0,0) != NULL
> I guess device_get_softc returns NULL for non-attached/unknown devices.
This check happens long before new-bus gets started, so there are no softc's
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