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-.\" $OpenBSD: boot_cats.8,v 1.6 2007/05/31 19:19:59 jmc Exp $
-.\"
-.\" Copyright (c) 2004, Miodrag Vallat.
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-.\"
-.Dd $Mdocdate: May 31 2007 $
-.Dt BOOT_CATS 8 cats
-.Os
-.Sh NAME
-.Nm boot_cats
-.Nd CATS system bootstrapping procedures
-.Sh DESCRIPTION
-.Ss System startup
-When powered on, after a panic, or if the system is rebooted via
-.Xr reboot 8
-or
-.Xr shutdown 8 ,
-the Cyclone or ABLE firmware will proceed to its initialization,
-and will try to boot an operating system if autoboot is enabled.
-Cyclone firmware must be upgraded to ABLE before
-.Ox
-can be run.
-.Ss Boot process options
-The ABLE firmware will attempt to boot the commandline stored in the
-.Em boot.cmd
-environment variable, such as
-.Dq (hd0)bsd -f .
-Autoboot is enabled by setting the
-.Em boot.auto
-environment variable to
-.Sq true ,
-and will start after
-.Em boot.timeout
-seconds.
-.Pp
-The kernel can be passed arguments on the commandline.
-The expected syntax for
-.Ox
-kernel parameters is one or more option letters from the following list,
-prefixed by a dash
-.Pq - :
-.Bl -tag -width "XXX" -offset indent -compact
-.Pp
-.It Cm a
-Prompt for the root filesystem device after the devices have been configured.
-.It Cm c
-Enter the
-.Dq User Kernel Configuration
-mode upon startup
-.Pq Xr boot_config 8 .
-.It Cm d
-Enter the debugger,
-.Xr ddb 4 ,
-as soon as the kernel console has been initialized.
-.It Cm f
-Use the
-.Xr footbridge 4
-serial port
-.Pq Xr fcom 4
-as the console.
-.It Cm s
-Boot the system single-user.
-.It Cm v
-Use the
-.Xr vga 4
-graphics display as the console, if available.
-.El
-.Ss Abnormal system termination
-In case of system crashes, the kernel will usually enter the kernel
-debugger,
-.Xr ddb 4 ,
-unless it is not present in the kernel, or it is disabled via the
-.Em ddb.panic
-sysctl.
-Upon leaving ddb, or if ddb was not entered, the kernel will halt the system
-if it was still in device configuration phase, or attempt a dump to the
-configured dump device, if possible.
-The crash dump will then be recovered by
-.Xr savecore 8
-during the next multi-user boot cycle.
-It is also possible to force other behaviours from ddb.
-.Sh FILES
-.Bl -tag -width /bsd.rd -compact
-.It Pa /bsd
-default system kernel
-.It Pa /bsd.rd
-standalone installation kernel, suitable for disaster recovery
-.El
-.Sh SEE ALSO
-.Xr ddb 4 ,
-.Xr boot_config 8 ,
-.Xr halt 8 ,
-.Xr init 8 ,
-.Xr reboot 8 ,
-.Xr savecore 8 ,
-.Xr shutdown 8
-.Sh CAVEATS
-.Tn ABLE
-is not able to access or boot off
-.Ox
-FFS partitions on some disks.
-This can be helped by forcing smaller disk access, by setting the
-.Em ide.multi-limit
-nvram variable to a small integer value.
-A value of
-.Ar 1
-ought to work in all cases.