Trimming the default /boot/device.hints
M. Warner Losh
imp at bsdimp.com
Fri Feb 6 08:27:20 PST 2009
In message: <200902061106.41235.jhb at freebsd.org>
John Baldwin <jhb at freebsd.org> writes:
: 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)?
: It works "normally" during the new-bus attach, but the low-level console code
: probably checks for it early on as well. The serial console code works that
: way. The uart(4) and sio(4) drivers explicitly look for uart/sio hints to
: find possible console devices. This is separate from when the ISA bus adds
: uart/sio devices from the hints later on.
sio could be loaded as a driver, and still be the console driver. But
it had to be loaded from /boot/loader.
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