1869093b1SHidetoshi Shimokawa.\" Copyright (c) 2003 Hidetoshi Shimokawa 2869093b1SHidetoshi Shimokawa.\" All rights reserved. 3869093b1SHidetoshi Shimokawa.\" 4869093b1SHidetoshi Shimokawa.\" Redistribution and use in source and binary forms, with or without 5869093b1SHidetoshi Shimokawa.\" modification, are permitted provided that the following conditions 6869093b1SHidetoshi Shimokawa.\" are met: 7869093b1SHidetoshi Shimokawa.\" 1. Redistributions of source code must retain the above copyright 8869093b1SHidetoshi Shimokawa.\" notice, this list of conditions and the following disclaimer. 9869093b1SHidetoshi Shimokawa.\" 2. Redistributions in binary form must reproduce the above copyright 10869093b1SHidetoshi Shimokawa.\" notice, this list of conditions and the following disclaimer in the 11869093b1SHidetoshi Shimokawa.\" documentation and/or other materials provided with the distribution. 12869093b1SHidetoshi Shimokawa.\" 13869093b1SHidetoshi Shimokawa.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14869093b1SHidetoshi Shimokawa.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15869093b1SHidetoshi Shimokawa.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16869093b1SHidetoshi Shimokawa.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 17869093b1SHidetoshi Shimokawa.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18869093b1SHidetoshi Shimokawa.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 19869093b1SHidetoshi Shimokawa.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20869093b1SHidetoshi Shimokawa.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 21869093b1SHidetoshi Shimokawa.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 22869093b1SHidetoshi Shimokawa.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 23869093b1SHidetoshi Shimokawa.\" POSSIBILITY OF SUCH DAMAGE. 24869093b1SHidetoshi Shimokawa.\" 25869093b1SHidetoshi Shimokawa.\" $FreeBSD$ 26869093b1SHidetoshi Shimokawa.\" 27869093b1SHidetoshi Shimokawa.Dd February 11, 2003 28869093b1SHidetoshi Shimokawa.Dt DCONS 4 29869093b1SHidetoshi Shimokawa.Os 30869093b1SHidetoshi Shimokawa.Sh NAME 31869093b1SHidetoshi Shimokawa.Nm dcons 32869093b1SHidetoshi Shimokawa.Nd dumb console device driver 33869093b1SHidetoshi Shimokawa.Sh SYNOPSIS 34869093b1SHidetoshi Shimokawa.Cd device dcons 35869093b1SHidetoshi Shimokawa.Pp 36869093b1SHidetoshi Shimokawa.Cd options DDB 37869093b1SHidetoshi Shimokawa.Cd options ALT_BREAK_TO_DEBUGGER 38869093b1SHidetoshi Shimokawa.Pp 39869093b1SHidetoshi Shimokawa.Cd device firewire 40869093b1SHidetoshi Shimokawa.Sh DESCRIPTION 41869093b1SHidetoshi ShimokawaThe 42869093b1SHidetoshi Shimokawa.Nm 43b7da4442SChristian Bruefferdevice is a simple console device which just reads from and writes to 4401ddd31fSRuslan Ermilovan allocated buffer for input and output respectively. 45b7da4442SChristian BruefferIt is of no use by itself and it is supposed that the buffer is accessed 46869093b1SHidetoshi Shimokawavia a bus like 4769c6f506SHidetoshi Shimokawa.Xr firewire 4 48efa60c7aSHidetoshi Shimokawaor 49efa60c7aSHidetoshi Shimokawa.Xr kvm 3 50869093b1SHidetoshi Shimokawafor interaction. 51869093b1SHidetoshi Shimokawa.Pp 52869093b1SHidetoshi ShimokawaThe buffer consists of 4 channels. 5301ddd31fSRuslan ErmilovThere are 2 ports, one for the console TTY and another is GDB port, 5401ddd31fSRuslan Ermilovthen each port has an input channel and an output channel. 5501ddd31fSRuslan Ermilov.Sh EXAMPLES 56869093b1SHidetoshi ShimokawaIf you want to run 57869093b1SHidetoshi Shimokawa.Xr getty 8 5801ddd31fSRuslan Ermilovon 5901ddd31fSRuslan Ermilov.Nm , 6001ddd31fSRuslan Ermilovinsert the following line into 61869093b1SHidetoshi Shimokawa.Xr /etc/ttys 5 6201ddd31fSRuslan Ermilovand send a 6301ddd31fSRuslan Ermilov.Dv HUP 6401ddd31fSRuslan Ermilovsignal to 65869093b1SHidetoshi Shimokawa.Xr init 8 66869093b1SHidetoshi Shimokawausing 67869093b1SHidetoshi Shimokawa.Xr kill 1 . 68869093b1SHidetoshi Shimokawa.Bd -literal -offset indent 69869093b1SHidetoshi Shimokawadcons "/usr/libexec/getty std.9600" vt100 on secure 70869093b1SHidetoshi Shimokawa.Ed 71869093b1SHidetoshi Shimokawa.Pp 72b7da4442SChristian BruefferOnce the 73869093b1SHidetoshi Shimokawa.Xr fwochi 4 74869093b1SHidetoshi Shimokawadevice is initialized to allow physical access, 7501ddd31fSRuslan Ermilovthe buffer can be accessed from another host via a 7601ddd31fSRuslan Ermilov.Xr firewire 4 7701ddd31fSRuslan Ermilovbus using the 78efa60c7aSHidetoshi Shimokawa.Xr dconschat 8 7901ddd31fSRuslan Ermilovapplication. 8001ddd31fSRuslan ErmilovSee 81efa60c7aSHidetoshi Shimokawa.Xr dconschat 8 82869093b1SHidetoshi Shimokawafor more details. 83869093b1SHidetoshi Shimokawa.Sh FILES 84869093b1SHidetoshi Shimokawa.Bl -tag -width indent -compact 85869093b1SHidetoshi Shimokawa.It Pa /dev/dcons 86869093b1SHidetoshi Shimokawa.It Pa /etc/ttys 87869093b1SHidetoshi Shimokawa.El 88869093b1SHidetoshi Shimokawa.Sh SEE ALSO 89efa60c7aSHidetoshi Shimokawa.Xr dcons_crom 4 , 90869093b1SHidetoshi Shimokawa.Xr ddb 4 , 91869093b1SHidetoshi Shimokawa.Xr firewire 4 , 92869093b1SHidetoshi Shimokawa.Xr fwohci 4 , 93b7da4442SChristian Brueffer.Xr ttys 5 , 94efa60c7aSHidetoshi Shimokawa.Xr dconschat 8 , 95b7da4442SChristian Brueffer.Xr fwcontrol 8 96869093b1SHidetoshi Shimokawa.Sh AUTHORS 97869093b1SHidetoshi Shimokawa.An Hidetoshi Shimokawa Aq simokawa@FreeBSD.org 98869093b1SHidetoshi Shimokawa.Sh BUGS 9901ddd31fSRuslan ErmilovThis driver is 10001ddd31fSRuslan Ermilov.Ud . 101