1.\" $OpenBSD: boot_sparc64.8,v 1.12 2007/05/31 19:20:00 jmc Exp $ 2.\" 3.\" Copyright (c) 1992, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)boot_sparc.8 8.2 (Berkeley) 4/19/94 31.\" 32.Dd $Mdocdate: May 31 2007 $ 33.Dt BOOT_SPARC64 8 sparc64 34.Os 35.Sh NAME 36.Nm boot_sparc64 37.Nd sparc64 system bootstrapping procedures 38.Sh DESCRIPTION 39.Ss System starts 40When powered on, after a panic, or if the system is rebooted via 41.Xr reboot 8 42or 43.Xr shutdown 8 , 44the PROM will proceed to its initialization, and will boot an operating 45system if autoboot is enabled. 46.Ss Boot process description 47System boot blocks are installed near the start of the boot disk 48using the procedure described in 49.Xr installboot 8 . 50The boot program attempts to load the kernel from the selected 51boot device, 52which must currently be an 53.Tn SCSI 54.Pq Dq sd 55or IDE 56.Pq Dq wd 57disk drive, or a CD-ROM 58.Pq Dq cd , 59or an 60.Tn SCSI 61tape drive 62.Pq Dq st . 63.Pp 64The UltraSPARC 65.Tn Open Firmware 66will normally look for a bootloader on the device specified by the 67.Em boot-device 68variable. 69The 70.Ox 71bootloader will then look for a kernel named 72.Pa bsd 73by default, unless the 74.Em boot-file 75variable is set, or a different filename has been specified 76in the boot command. 77To reset this variable to its default, empty, value, type the following: 78.Pp 79.Em \ ok 80set-default 81.Em boot-file 82.Pp 83Autoboot is enabled by setting the 84.Em auto-boot?\& 85variable to 86.Dq true , 87and is the factory default. 88.Ss Boot process options 89The following options are recognized: 90.Bl -tag -width "-XXX" -offset indent -compact 91.Pp 92.It Fl a 93Prompt for the root filesystem and swap devices after the devices have 94been configured. 95.It Fl c 96Enter the 97.Dq User Kernel Configuration 98mode upon startup 99.Pq see Xr boot_config 8 . 100.It Fl d 101Enter the debugger, 102.Xr ddb 4 , 103as soon as the kernel console has been initialized. 104.It Fl s 105Boot the system single-user. 106The system will be booted multi-user unless this option is specified. 107.El 108.Ss Accessing the PROM during runtime 109If the 110.Xr sysctl 8 111variable 112.Em ddb.console 113is enabled, at any time you can break back to the ROM by pressing the 114.Dq L1 115.Pq also known as the Dq stop key 116and 117.Dq a 118keys at the same time (if the console is a serial port the same is 119achieved by sending a 120.Dq break ) , 121and entering 122.Ic machine prom 123at the prompt. 124If you do this accidentally you can continue whatever was in progress 125by typing 126.Ic go 127at the PROM prompt, and then 128.Ic cont 129to return to the system. 130.Sh FILES 131.Bl -tag -width /usr/mdec/ofwboot.net -compact 132.It Pa /bsd 133default system kernel 134.It Pa /bsd.rd 135standalone installation kernel, suitable for disaster recovery 136.It Pa /usr/mdec/bootblk 137primary bootstrap for 138.Dq ffs 139file system 140.It Pa /usr/mdec/ofwboot 141secondary bootstrap (usually also installed as 142.Pa /ofwboot ) 143.It Pa /usr/mdec/ofwboot.net 144network bootstrap 145.El 146.Sh SEE ALSO 147.Xr ddb 4 , 148.Xr boot_config 8 , 149.Xr halt 8 , 150.Xr init 8 , 151.Xr installboot 8 , 152.Xr reboot 8 , 153.Xr savecore 8 , 154.Xr shutdown 8 155