Subject: Re: root device
To: Nathan J. Williams <nathanw@wasabisystems.com>
From: Andrew Brown <atatat@atatdot.net>
List: tech-kern
Date: 02/10/2003 18:06:30
>> > > i think that having a program that could dump out the device tree
>> > > under netbsd would be *damn cool*!
>> >
>> > Hey, look at what Darwin's ioreg outputs on my NetBSD/macppc machine:
>> >
>> > +-o mainbus0@ <class unknownClass>
>> > +-o cpu0@ <class unknownClass>
>> >
>> > [ ... ]
>>
>> It'd be nice to have a _native_ NetBSD program to show this too. I'm
>> sorta sure that's what Andrew meant :-)
yep. that was what i meant. kinda like pmap(1) that prints the
process's memory map. i like that one, too, but perhaps i'm partial
to it because i wrote it. :)
>Here's something I've had kicking around for a while. It's quite
>simple; embellish as necessary to get actual tree-like
>output. Locators only exist for devices configured explicitly; we
>don't store "found" locators anywhere besides the message buffer.
>
>% ./printdev
>
>mainbus0
>cpu0 at mainbus0
>pci0 at mainbus0
>pchb0 at pci0
>...
i once wrote a perl script (i don't even remember why) that takes
/var/run/dmesg.boot and prints this:
% ~/src/perl/devtree /var/run/dmesg.boot
cpu0 at mainbus0
pnpbios0 at mainbus0
pckbc1 at pnpbios0 index 7 (PNP0303)
pckbd0 at pckbc1 (kbd slot)
wskbd0 at pckbd0
pms0 at pckbc1 (aux slot)
wsmouse0 at pms0 mux 0
pckbc2 at pnpbios0 index 8 (PNP0F13)
fdc1 at pnpbios0 index 11 (PNP0700)
com0 at pnpbios0 index 14 (PNP0501)
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0
agp0 at pchb0
ppb0 at pci0 dev 1 function 0
...
or this:
% ~/src/perl/devtree -v /var/run/dmesg.boot
cpu0 at mainbus0: (uniprocessor)
pnpbios0 at mainbus0: nodes 14, max len 262
pckbc1 at pnpbios0 index 7 (PNP0303): kbd port
pckbd0 at pckbc1 (kbd slot)
wskbd0 at pckbd0: console keyboard
pms0 at pckbc1 (aux slot)
wsmouse0 at pms0 mux 0
pckbc2 at pnpbios0 index 8 (PNP0F13): aux port
fdc1 at pnpbios0 index 11 (PNP0700)
com0 at pnpbios0 index 14 (PNP0501)
pci0 at mainbus0 bus 0: configuration mode 1
pchb0 at pci0 dev 0 function 0
...
like i said, i don't remember why i wrote it now, nor what i would use
it for...
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