1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/*
* Copyright (c) 1994 Christian E. Hopps
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christian E. Hopps.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* 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.
*
* $Id: autoconf.c,v 1.1 1995/10/18 10:54:25 deraadt Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/reboot.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/disklabel.h>
#include <machine/cpu.h>
void configure __P((void));
void setroot __P((void));
void swapconf __P((void));
int realconfig=0;
int cold; /* 1 if still booting */
#include <sys/kernel.h>
/*
* called at boot time, configure all devices on system
*/
void
configure()
{
/*
* this is the real thing baby (i.e. not console init)
*/
realconfig = 1;
if (config_rootfound("mainbus", "mainbus") == 0)
panic("no mainbus found");
#ifdef GENERIC
if ((boothowto & RB_ASKNAME) == 0)
setroot();
setconf();
#else
setroot();
#endif
swapconf();
cold = 0;
}
/*ARGSUSED*/
int
simple_devprint(auxp, pnp)
void *auxp;
char *pnp;
{
return(QUIET);
}
int
matchname(fp, sp)
char *fp, *sp;
{
int len;
len = strlen(fp);
if (strlen(sp) != len)
return(0);
if (bcmp(fp, sp, len) == 0)
return(1);
return(0);
}
/*
* this function needs to get enough configured to do a console
* basically this means start attaching the grfxx's that support
* the console. Kinda hacky but it works.
*/
int
config_console()
{
struct cfdata *cf;
/*
* we need mainbus' cfdata.
*/
cf = config_rootsearch(NULL, "mainbus", "mainbus");
if (cf == NULL)
panic("no mainbus");
}
void
swapconf()
{
struct swdevt *swp;
u_int maj;
int nb;
for (swp = swdevt; swp->sw_dev > 0; swp++) {
maj = major(swp->sw_dev);
if (maj > nblkdev)
break;
if (bdevsw[maj].d_psize) {
nb = bdevsw[maj].d_psize(swp->sw_dev);
if (nb > 0 &&
(swp->sw_nblks == 0 || swp->sw_nblks > nb))
swp->sw_nblks = nb;
else
swp->sw_nblks = 0;
}
swp->sw_nblks = ctod(dtoc(swp->sw_nblks));
}
if (dumplo == 0 && dumpdev != NODEV && bdevsw[major(dumpdev)].d_psize)
/*dumplo = (*bdevsw[major(dumpdev)].d_psize)(dumpdev) - physmem;*/
dumplo = (*bdevsw[major(dumpdev)].d_psize)(dumpdev) -
ctob(physmem)/DEV_BSIZE;
if (dumplo < 0)
dumplo = 0;
}
#define DOSWAP /* change swdevt and dumpdev */
u_long bootdev = 0; /* should be dev_t, but not until 32 bits */
static char devname[][2] = {
0,0,
0,0,
0,0,
0,0,
's','d', /* 4 = sd -- new SCSI system */
};
void
setroot()
{
int majdev, mindev, unit, part, adaptor;
dev_t temp, orootdev;
struct swdevt *swp;
printf("setroot boothowto %x bootdev %x\n", boothowto, bootdev);
if (boothowto & RB_DFLTROOT ||
(bootdev & B_MAGICMASK) != (u_long)B_DEVMAGIC)
return;
majdev = (bootdev >> B_TYPESHIFT) & B_TYPEMASK;
if (majdev > sizeof(devname) / sizeof(devname[0]))
return;
adaptor = (bootdev >> B_ADAPTORSHIFT) & B_ADAPTORMASK;
part = (bootdev >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
unit = (bootdev >> B_UNITSHIFT) & B_UNITMASK;
orootdev = rootdev;
rootdev = MAKEDISKDEV(majdev, unit, part);
/*
* If the original rootdev is the same as the one
* just calculated, don't need to adjust the swap configuration.
*/
if (rootdev == orootdev)
return;
printf("changing root device to %c%c%d%c\n",
devname[majdev][0], devname[majdev][1],
unit, part + 'a');
#ifdef DOSWAP
mindev = DISKUNIT(rootdev);
for (swp = swdevt; swp->sw_dev; swp++) {
printf("DOSWAP swap %x dev %x\n", swp, swp->sw_dev);
if (majdev == major(swp->sw_dev) &&
mindev == DISKUNIT(swp->sw_dev)) {
temp = swdevt[0].sw_dev;
swdevt[0].sw_dev = swp->sw_dev;
swp->sw_dev = temp;
break;
}
}
if (swp->sw_dev == 0)
return;
/*
* If dumpdev was the same as the old primary swap
* device, move it to the new primary swap device.
*/
if (temp == dumpdev)
dumpdev = swdevt[0].sw_dev;
#endif
}
|
