Trimming the default /boot/device.hints

[John Baldwin]

On Friday 06 February 2009 11:25:23 am M. Warner Losh wrote:
> 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.

Are you sure?  The console stuff is initialized (cninit()) well before any 
SYSINIT's are run.

-- 
John Baldwin