Annotation of sys/arch/mvmeppc/mvmeppc/autoconf.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: autoconf.c,v 1.19 2007/06/01 23:14:07 deraadt Exp $ */
2: /*
3: * Copyright (c) 1996, 1997 Per Fogelstrom
4: * Copyright (c) 1995 Theo de Raadt
5: * Copyright (c) 1988 University of Utah.
6: * Copyright (c) 1992, 1993
7: * The Regents of the University of California. All rights reserved.
8: *
9: * This code is derived from software contributed to Berkeley by
10: * the Systems Programming Group of the University of Utah Computer
11: * Science Department and Ralph Campbell.
12: *
13: * Redistribution and use in source and binary forms, with or without
14: * modification, are permitted provided that the following conditions
15: * are met:
16: * 1. Redistributions of source code must retain the above copyright
17: * notice, this list of conditions and the following disclaimer.
18: * 2. Redistributions in binary form must reproduce the above copyright
19: * notice, this list of conditions and the following disclaimer in the
20: * documentation and/or other materials provided with the distribution.
21: * 3. Neither the name of the University nor the names of its contributors
22: * may be used to endorse or promote products derived from this software
23: * without specific prior written permission.
24: *
25: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35: * SUCH DAMAGE.
36: *
37: * from: Utah Hdr: autoconf.c 1.31 91/01/21
38: *
39: * from: @(#)autoconf.c 8.1 (Berkeley) 6/10/93
40: * $Id: autoconf.c,v 1.19 2007/06/01 23:14:07 deraadt Exp $
41: */
42:
43: /*
44: * Setup the system to run on the current machine.
45: *
46: * cpu_configure() is called at boot time. Available
47: * devices are determined (from possibilities mentioned in ioconf.c),
48: * and the drivers are initialized.
49: */
50:
51: #include <sys/param.h>
52: #include <sys/systm.h>
53: #include <sys/buf.h>
54: #include <sys/disklabel.h>
55: #include <sys/conf.h>
56: #include <sys/reboot.h>
57: #include <sys/device.h>
58:
59: #include <machine/autoconf.h>
60: #include <machine/bugio.h>
61:
62: extern void dumpconf(void);
63: struct device *getdevunit(char *, int);
64: void calc_delayconst(void); /* clock.c */
65:
66: /*
67: * The following several variables are related to
68: * the configuration process, and are used in initializing
69: * the machine.
70: */
71: int cold = 1; /* if 1, still working on cold-start */
72: int bootdev; /* boot device as provided by locore */
73: struct device *bootdv = NULL;
74:
75: /*
76: * Configure all devices found that we know about.
77: * This is done at boot time.
78: */
79: void
80: cpu_configure()
81: {
82: (void)splhigh(); /* To be really sure.. */
83: calc_delayconst();
84:
85: if (config_rootfound("mainbus", "mainbus") == 0)
86: panic("no mainbus found");
87:
88: ppc_intr_enable(1);
89: spl0();
90:
91: /*
92: * We can not select the root device yet, because we use bugtty
93: * as the console for now, and it requires the clock to be ticking
94: * for proper operation (think boot -a ...)
95: */
96: cold = 0;
97: }
98:
99: void
100: diskconf(void)
101: {
102: printf("boot device: %s\n",
103: (bootdv != NULL) ? bootdv->dv_xname : "<unknown>");
104: setroot(bootdv, 0, RB_USERREQ);
105: #if 0
106: dumpconf();
107: #endif
108: }
109:
110: /*
111: * Crash dump handling.
112: */
113: u_long dumpmag = 0x8fca0101; /* magic number */
114: int dumpsize = 0; /* size of dump in pages */
115: long dumplo = -1; /* blocks */
116:
117: /*
118: * This is called by configure to set dumplo and dumpsize.
119: * Dumps always skip the first CLBYTES of disk space
120: * in case there might be a disk label stored there.
121: * If there is extra space, put dump at the end to
122: * reduce the chance that swapping trashes it.
123: */
124: #if 0
125: void
126: dumpconf(void)
127: {
128: int nblks; /* size of dump area */
129:
130: if (dumpdev == NODEV ||
131: (nblks = (bdevsw[major(dumpdev)].d_psize)(dumpdev)) == 0)
132: return;
133: if (nblks <= ctod(1))
134: return;
135:
136: dumpsize = btoc(IOM_END + ctob(dumpmem_high));
137:
138: /* Always skip the first CLBYTES, in case there is a label there. */
139: if (dumplo < ctod(1))
140: dumplo = ctod(1);
141:
142: /* Put dump at end of partition, and make it fit. */
143: if (dumpsize > dtoc(nblks - dumplo))
144: dumpsize = dtoc(nblks - dumplo);
145: if (dumplo < nblks - ctod(dumpsize))
146: dumplo = nblks - ctod(dumpsize);
147: }
148: #endif
149:
150: /*
151: * find a device matching "name" and unit number
152: */
153: struct device *
154: getdevunit(name, unit)
155: char *name;
156: int unit;
157: {
158: struct device *dev = TAILQ_FIRST(&alldevs);
159: char num[10], fullname[16];
160: int lunit;
161:
162: /* compute length of name and decimal expansion of unit number */
163: snprintf(num, sizeof num, "%d", unit);
164: lunit = strlen(num);
165: if (strlen(name) + lunit >= sizeof(fullname) - 1)
166: panic("config_attach: device name too long");
167:
168: strlcpy(fullname, name, sizeof fullname);
169: strlcat(fullname, num, sizeof fullname);
170:
171: while (strcmp(dev->dv_xname, fullname) != 0) {
172: if ((dev = TAILQ_NEXT(dev, dv_list)) == NULL)
173: return NULL;
174: }
175: return dev;
176: }
177:
178: struct nam2blk nam2blk[] = {
179: { "wd", 0 },
180: { "sd", 2 },
181: { "raid", 19 },
182: { NULL, -1 }
183: };
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