Date: Fri, 6 Feb 2009 11:37:41 -0500 From: John Baldwin <jhb@freebsd.org> To: "M. Warner Losh" <imp@bsdimp.com> Cc: avg@icyb.net.ua, freebsd-arch@freebsd.org Subject: Re: Trimming the default /boot/device.hints Message-ID: <200902061137.42052.jhb@freebsd.org> In-Reply-To: <20090206.092523.2067072549.imp@bsdimp.com> References: <200902060937.55724.jhb@freebsd.org> <200902061106.41235.jhb@freebsd.org> <20090206.092523.2067072549.imp@bsdimp.com>
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On Friday 06 February 2009 11:25:23 am M. Warner Losh wrote: > In message: <200902061106.41235.jhb@freebsd.org> > John Baldwin <jhb@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. Are you sure? The console stuff is initialized (cninit()) well before any SYSINIT's are run. -- John Baldwin
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