Annotation of sys/arch/mac68k/mac68k/autoconf.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: autoconf.c,v 1.30 2007/06/01 19:25:10 deraadt Exp $ */
2: /* $NetBSD: autoconf.c,v 1.38 1996/12/18 05:46:09 scottr Exp $ */
3:
4: /*
5: * Copyright (c) 1992, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This software was developed by the Computer Systems Engineering group
9: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
10: * contributed to Berkeley.
11: *
12: * All advertising materials mentioning features or use of this software
13: * must display the following acknowledgement:
14: * This product includes software developed by the University of
15: * California, Lawrence Berkeley Laboratory.
16: *
17: * Redistribution and use in source and binary forms, with or without
18: * modification, are permitted provided that the following conditions
19: * are met:
20: * 1. Redistributions of source code must retain the above copyright
21: * notice, this list of conditions and the following disclaimer.
22: * 2. Redistributions in binary form must reproduce the above copyright
23: * notice, this list of conditions and the following disclaimer in the
24: * documentation and/or other materials provided with the distribution.
25: * 3. Neither the name of the University nor the names of its contributors
26: * may be used to endorse or promote products derived from this software
27: * without specific prior written permission.
28: *
29: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39: * SUCH DAMAGE.
40: *
41: * @(#)autoconf.c 8.4 (Berkeley) 10/1/93
42: */
43:
44: /*
45: * Setup the system to run on the current machine.
46: *
47: * cpu_configure() is called at boot time. Available
48: * devices are determined (from possibilities mentioned in ioconf.c),
49: * and the drivers are initialized.
50: */
51:
52: #include <sys/param.h>
53: #include <sys/systm.h>
54: #include <sys/buf.h>
55: #include <sys/disklabel.h>
56: #include <sys/conf.h>
57: #include <sys/reboot.h>
58: #include <sys/device.h>
59: #include <sys/disk.h>
60:
61: #include <dev/cons.h>
62:
63: #include <machine/autoconf.h>
64: #include <machine/viareg.h>
65:
66: #include <scsi/scsi_all.h>
67: #include <scsi/scsiconf.h>
68:
69: int target_to_unit(u_long, u_long, u_long);
70: void findbootdev(void);
71:
72: struct device *booted_device;
73: int booted_partition;
74: dev_t bootdev;
75:
76: /*
77: * Yanked from i386/i386/autoconf.c (and tweaked a bit)
78: */
79: void
80: findbootdev()
81: {
82: struct device *dv;
83: int major, unit;
84:
85: booted_device = NULL;
86: booted_partition = 0; /* Assume root is on partition a */
87:
88: major = B_TYPE(bootdev);
89: if (major < 0 || major >= nblkdev)
90: return;
91:
92: unit = B_UNIT(bootdev);
93:
94: bootdev &= ~(B_UNITMASK << B_UNITSHIFT);
95: unit = target_to_unit(-1, unit, 0);
96: bootdev |= (unit << B_UNITSHIFT);
97:
98: if (disk_count <= 0)
99: return;
100:
101: TAILQ_FOREACH(dv, &alldevs, dv_list) {
102: if (dv->dv_class == DV_DISK && major == findblkmajor(dv) &&
103: unit == dv->dv_unit) {
104: booted_device = dv;
105: return;
106: }
107: }
108: }
109:
110: void
111: cpu_configure()
112: {
113: startrtclock();
114:
115: if (config_rootfound("mainbus", "mainbus") == NULL)
116: panic("No mainbus found!");
117: spl0();
118:
119: findbootdev();
120: cold = 0;
121: }
122:
123: void
124: device_register(struct device *dev, void *aux)
125: {
126: }
127:
128: void
129: diskconf(void)
130: {
131: setroot(booted_device, booted_partition, RB_USERREQ);
132: dumpconf();
133: }
134:
135: /*
136: * Map a SCSI bus, target, lun to a device number.
137: * This could be tape, disk, CD. The calling routine, though,
138: * assumes DISK. It would be nice to allow CD, too...
139: */
140: int
141: target_to_unit(bus, target, lun)
142: u_long bus, target, lun;
143: {
144: struct scsibus_softc *scsi;
145: struct scsi_link *sc_link;
146: struct device *sc_dev;
147: extern struct cfdriver scsibus_cd;
148:
149: if (target < 0 || target > 7 || lun < 0 || lun > 7) {
150: printf("scsi target to unit, target (%ld) or lun (%ld)"
151: " out of range.\n", target, lun);
152: return -1;
153: }
154:
155: if (bus == -1) {
156: for (bus = 0 ; bus < scsibus_cd.cd_ndevs ; bus++) {
157: if (scsibus_cd.cd_devs[bus]) {
158: scsi = (struct scsibus_softc *)
159: scsibus_cd.cd_devs[bus];
160: if (scsi->sc_link[target][lun]) {
161: sc_link = scsi->sc_link[target][lun];
162: sc_dev = (struct device *)
163: sc_link->device_softc;
164: return sc_dev->dv_unit;
165: }
166: }
167: }
168: return -1;
169: }
170: if (bus < 0 || bus >= scsibus_cd.cd_ndevs) {
171: printf("scsi target to unit, bus (%ld) out of range.\n", bus);
172: return -1;
173: }
174: if (scsibus_cd.cd_devs[bus]) {
175: scsi = (struct scsibus_softc *) scsibus_cd.cd_devs[bus];
176: if (scsi->sc_link[target][lun]) {
177: sc_link = scsi->sc_link[target][lun];
178: sc_dev = (struct device *) sc_link->device_softc;
179: return sc_dev->dv_unit;
180: }
181: }
182: return -1;
183: }
184:
185: struct nam2blk nam2blk[] = {
186: { "sd", 4 },
187: { "cd", 6 },
188: { "rd", 13 },
189: { NULL, -1 }
190: };
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