Annotation of sys/arch/sparc/stand/installboot/installboot.8, Revision 1.1.1.1
1.1 nbrk 1: .\" $OpenBSD: installboot.8,v 1.9 2007/05/31 19:20:05 jmc Exp $
2: .\" $NetBSD: installboot.8,v 1.1 1995/09/30 21:32:14 pk Exp $
3: .\"
4: .\" Copyright (c) 1995 Paul Kranenburg
5: .\" All rights reserved.
6: .\"
7: .\" Redistribution and use in source and binary forms, with or without
8: .\" modification, are permitted provided that the following conditions
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14: .\" documentation and/or other materials provided with the distribution.
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17: .\" This product includes software developed by Paul Kranenburg.
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32: .Dd $Mdocdate: May 31 2007 $
33: .Dt INSTALLBOOT 8 sparc
34: .Os
35: .Sh NAME
36: .Nm installboot
37: .Nd install a bootstrap on an FFS filesystem partition
38: .Sh SYNOPSIS
39: .Nm installboot
40: .Op Fl nvh
41: .Op Fl a Ar karch
42: .Ar boot
43: .Ar bootxx
44: .Ar device
45: .Sh DESCRIPTION
46: .Nm installboot
47: prepares an FFS filesystem partition for boot-strapping from the PROM.
48: The sparc bootblocks are split into two parts: a small first-stage program that
49: is written into the superblock area in a partition
50: .Po
51: and hence is limited in size to SBSIZE - DEV_BSIZE bytes
52: .Pc ,
53: and a second-stage program that resides in the filesystem proper.
54: The first-stage program is loaded into memory by the PROM.
55: After it receives control, it loads the second stage program from a set of
56: filesystem block numbers that have been hard-coded into it by the
57: .Nm installboot
58: program.
59: The second-stage boot program uses the device driver interface to
60: the PROM and the stand-alone filesystem code in
61: .Dq libsa.a
62: to locate and load the kernel.
63: The second-stage boot program and the prototype code for the
64: first-stage bootprogram can be found in
65: .Pa /usr/mdec/boot
66: and
67: .Pa /usr/mdec/bootxx
68: respectively.
69: The second-stage program commonly resides in the root directory as
70: .Pa /boot .
71: The utility
72: .Pa /usr/mdec/binstall
73: can be used to properly copy the second-stage bootprogram to its destination.
74: This script takes care of post-processing that is required on
75: .Pf non- Tn Openboot
76: machines.
77: .Pp
78: The options are as follows:
79: .Bl -tag -width flag
80: .It Fl a Ar karch
81: Set the machine architecture.
82: The argument
83: .Ar karch
84: can be one of
85: .Dq sun4 ,
86: .Dq sun4c
87: or
88: .Dq sun4m .
89: Sun 4c models with
90: .Tn Openboot
91: PROMs need the header to be present, while Sun 4 systems with the
92: .Dq old monitor
93: interface require the header to be stripped off.
94: This is normally taken care of by
95: .Nm installboot
96: automatically, but it's useful when preparing a bootable filesystem for
97: another system.
98: .It Fl h
99: Leave the
100: .Xr a.out 5
101: header on the installed
102: .Ar bootxx
103: program.
104: This option has been superseded by the
105: .Fl a Ar karch
106: option.
107: .It Fl n
108: Do not actually write anything on the disk.
109: .It Fl v
110: Verbose mode.
111: .El
112: .Pp
113: The arguments are:
114: .Bl -tag -width bootxx
115: .It Ar boot
116: the name of the second-stage boot program in the file system
117: where the first-stage boot program is to be installed.
118: .It Ar bootxx
119: the name of the prototype file for the first stage boot program.
120: .It Ar device
121: the name of the raw device in which the first-stage boot program
122: is to be installed.
123: This should correspond to the block device on which the file system containing
124: .Ar boot
125: is mounted.
126: .El
127: .Sh EXAMPLES
128: The following command will install the first-stage bootblocks in the
129: root filesystem
130: .Pq assumed to be mounted on Dq sd0a
131: using the file
132: .Pa /boot
133: as the second-level boot program:
134: .Bd -literal -offset indent
135: installboot /boot /usr/mdec/bootxx /dev/rsd0a
136: .Ed
137: .Sh SEE ALSO
138: .Xr disklabel 8 ,
139: .Xr init 8
140: .Sh HISTORY
141: The
142: .Nm installboot
143: first appeared in
144: .Nx 1.1 .
145: .Sh BUGS
146: .Nm installboot
147: requires simultaneous access to the mounted file system and
148: the raw device, but that is not allowed with the kernel
149: .Dv securelevel
150: variable set to a value greater than zero
151: .Pq the default ,
152: so
153: .Nm installboot
154: only works in single-user mode
155: .Pq or insecure mode - see Xr init 8 .
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