\"      $NetBSD: boot.8,v 1.18 2014/10/27 16:18:38 wiz Exp $
\"
\" Copyright (c) 1992, 1993
\"      The Regents of the University of California.  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.
\" 3. Neither the name of the University nor the names of its contributors
\"    may be used to endorse or promote products derived from this software
\"    without specific prior written permission.
\"
\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
\"
\"     @(#)boot_sparc.8 8.2 (Berkeley) 4/19/94
\"
Dd November 9, 2008
Dt BOOT 8 sparc64
Os
Sh NAME
Nm boot ,
Nm ofwboot
Nd system bootstrapping procedures
Sh SYNOPSIS
Nm boot
Op Fl adqsv
Oo
Ar --
Aq Ar boot string
Oc
Sh DESCRIPTION
Tn Sun
Tn UltraSPARC
systems support booting from locally attached storage media
Pq e.g. hard disk, Tn CD-ROM ,
and booting over
Tn Ethernet
networks using
Tn BOOTP .
Ss Power fail and crash recovery
Normally, the system will reboot itself at power-up or after crashes.
An automatic consistency check of the file systems will be performed
as described in
Xr fsck 8 ,
and unless this fails, the system will resume multi-user operations.
Ss Cold starts
The
Tn Sun
Open Firmware performs a Power On Self Test
Pq Tn POST ,
and then will boot an operating system according to
configuration in Open Firmware environment variables.
Ss Boot program options
Bl -tag -width xxx
It Fl a
Prompt for the root file system device, the system crash dump
device, and the path to
Xr init 8 .
It Fl d
Bring the system up in debug mode.
Here it waits for a kernel debugger connect; see
Xr gdb 1 .
It Fl q
Boot the system in quiet mode.
It Fl s
Bring the system up in single-user mode.
It Fl v
Boot the system in verbose mode.
El
Pp
Any extra flags or arguments, or the
Aq Ar boot string
after the -- separator are passed to the boot PROM.
Other flags are currently ignored.
Pp
At any time you can halt the running system and get back to the Open Firmware.
If the console is the
Tn Sun
framebuffer and keyboard,
press the
Sq STOP
and
Sq A
keys at the same time on the keyboard.
On older models of
Tn Sun
keyboards, the
Sq STOP
key is labeled
Sq L1 .
Pp
If the console is a serial port the same is
achieved by sending a
Sq BREAK .
Pp
If you do this accidentally, you can continue whatever was in progress
with the
Ic go
command.
Sh BOOT DEVICES
Since machines vary greatly in the way their devices are connected,
there are aliases defined by the firmware.
You can either use the fully qualified
Open Firmware path of a device node, or the alias.
Pp
The secondary boot loader,
Nm ofwboot ,
takes
Nm
commands virtually the same as Open Firmware.
Thus, the following examples apply equally to
Nm ofwboot
as well as Open Firmware.
Pp
A typical list of usable boot devices (extracted from the output of
the Open Firmware command
Ic devalias )
is:
Bd -literal -offset indent
net                      /sbus/SUNW,hme@e,8c00000
disk                     /sbus/SUNW,fas@e,8800000/sd@0,0
cdrom                    /sbus/SUNW,fas@e,8800000/sd@6,0:f
disk6                    /sbus/SUNW,fas@e,8800000/sd@6,0
disk5                    /sbus/SUNW,fas@e,8800000/sd@5,0
disk4                    /sbus/SUNW,fas@e,8800000/sd@4,0
disk3                    /sbus/SUNW,fas@e,8800000/sd@3,0
disk2                    /sbus/SUNW,fas@e,8800000/sd@2,0
disk1                    /sbus/SUNW,fas@e,8800000/sd@1,0
disk0                    /sbus/SUNW,fas@e,8800000/sd@0,0
Ed
Pp
If a device specification includes a partition letter (for example
Em cdrom
in above list), that partition is used by default, otherwise the first (a)
partition is used.
If booting from the net device, there is no partition involved.
Pp
The boot device is an optional first part of the boot string, if no device
is specified the default device is used (see below).
Sh FIRMWARE ENVIRONMENT VARIABLES
All Open Firmware environment variables can be printed with the
Ic printenv
command and changed with the
Ic setenv
command.
The boot process relevant variables and their suggested value for
booting
Nx
are:
Bd -literal -offset indent
boot-command          boot
auto-boot?            true
boot-file
boot-device           disk
diag-switch?          false
Ed
Pp
Of course you may select any other boot device,
if you do not want to boot from the device aliased to
Em disk ,
see the discussion on devices above.
Sh FILES
Bl -tag -width /usr/mdec/ofwboot.netxx -compact
It Pa /netbsd
system code
It Pa /ofwboot
system bootstrap
It Pa /usr/mdec/ofwboot.net
alternate bootstrap when booting from the network, see
Xr diskless 8
for details.
El
Sh EXAMPLES
Boot from
Tn CD-ROM :
Pp
Bd -literal -offset indent
boot cdrom
Ed
Pp
Note that some multi-architecture CDs are not able to use the
default sparc64 partition for
Tn CD-ROMs
Pq f ,
so they may require an explicit partition letter, for example
Bd -literal -offset indent
boot cdrom:c
Ed
Pp
When using external
Tn SCSI
Tn CD-ROM
drives it is important to know two things: the
Tn Sun
firmware expects the
Tn SCSI
ID to be six, and the drive must support 512-byte block reads,
in addition to the standard 2048-byte reads.
Pp
Use
Bd -literal -offset indent
boot net -sd
Ed
Pp
to boot single user from network and break into the kernel debugger as
soon as possible.
Pp
Use
Bd -literal -offset indent
boot net tftp:netbsd -a
Ed
Pp
to boot a kernel named netbsd obtained via tftp and have it ask for
root file system, swap partition and init location once it is up.
Pp
During installation from a different operating system
Bd -literal -offset indent
boot disk:b
Ed
Pp
is used to boot a
Dq miniroot
file system from the swap partition.
Sh SEE ALSO
Xr disklabel 8 ,
Xr diskless 8 ,
Xr fsck 8 ,
Xr halt 8 ,
Xr init 8 ,
Xr installboot 8 ,
Xr rc 8 ,
Xr shutdown 8 ,
Xr sparc/boot 8 ,
Xr syslogd 8
Sh STANDARDS
Tn Sun
developed its firmware and promoted it to become
St -ieee1275-94 .
Pp
Lk http://www.openfirmware.org/1275/ "IEEE 1275 Open Firmware"
Sh BUGS
Nx
provides no way to boot
Tn UltraSPARC
systems from floppy disks.
This is unlikely to change, due to very low demand for this feature.
Pp
The OBP on Ultra 1 and Ultra 2 machines can only boot from the first
4Gb of the disk.

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.