1 /* $NetBSD: autoconf.c,v 1.80 2012/10/13 06:51:22 tsutsui Exp $ */
2
3 /*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department and Ralph Campbell.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah Hdr: autoconf.c 1.31 91/01/21
37 *
38 * @(#)autoconf.c 8.1 (Berkeley) 6/10/93
39 */
40
41 #include <sys/cdefs.h>
42 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.80 2012/10/13 06:51:22 tsutsui Exp $");
43
44 #include <sys/param.h>
45 #include <sys/conf.h>
46 #include <sys/device.h>
47 #include <sys/intr.h>
48 #include <sys/reboot.h>
49 #include <sys/systm.h>
50
51 #include <pmax/autoconf.h>
52 #include <pmax/sysconf.h>
53
54 #include <pmax/pmax/pmaxtype.h>
55
56 #include <dev/tc/tcvar.h>
57
58 #include <dev/scsipi/scsi_all.h>
59 #include <dev/scsipi/scsipi_all.h>
60 #include <dev/scsipi/scsiconf.h>
61
62 #include "opt_dec_3100.h"
63 #include "opt_dec_5100.h"
64
65 struct intrhand intrtab[MAX_DEV_NCOOKIES];
66 static device_t booted_controller;
67 static int booted_slot, booted_unit;
68 static const char *booted_protocol;
69
70 /*
71 * Configure all devices on system
72 */
73 void
cpu_configure(void)74 cpu_configure(void)
75 {
76
77 /* Kick off autoconfiguration. */
78 (void)splhigh();
79
80 /* Interrupt initialization. */
81 intr_init();
82
83 if (config_rootfound("mainbus", NULL) == NULL)
84 panic("no mainbus found");
85
86 /* Reset any bus errors due to probing nonexistent devices. */
87 (*platform.bus_reset)();
88
89 /* Configuration is finished, turn on interrupts. */
90 spl0(); /* enable all source forcing SOFT_INTs cleared */
91 }
92
93 /*
94 * Look at the string 'cp' and decode the boot device. Boot names
95 * can be something like 'rz(0,0,0)vmunix' or '5/rz0/vmunix'.
96 *
97 * 2100/3100/5100 allows abbrivation;
98 * dev(controller[,uni-number[,partition-number]]])[filename]
99 */
100 void
makebootdev(char * cp)101 makebootdev(char *cp)
102 {
103 booted_device = NULL;
104 booted_slot = booted_unit = booted_partition = 0;
105 booted_protocol = NULL;
106
107 #if defined(DEC_3100) || defined(DEC_5100)
108 if (cp[0] == 'r' && cp[1] == 'z' && cp[2] == '(') {
109 cp += 3;
110 if (*cp >= '0' && *cp <= '9')
111 booted_slot = *cp++ - '0';
112 if (*cp == ',')
113 cp += 1;
114 if (*cp >= '0' && *cp <= '9')
115 booted_unit = *cp++ - '0';
116 if (*cp == ',')
117 cp += 1;
118 if (*cp >= '0' && *cp <= '9')
119 booted_partition = *cp - '0';
120 booted_protocol = "SCSI";
121 return;
122 }
123 if (strncmp(cp, "tftp(", 5) == 0) {
124 booted_protocol = "BOOTP";
125 return;
126 }
127 if (strncmp(cp, "mop(", 4) == 0) {
128 booted_protocol = "MOP";
129 return;
130 }
131 #endif
132
133 if (cp[0] >= '0' && cp[0] <= '9' && cp[1] == '/') {
134 booted_slot = cp[0] - '0';
135 if (cp[2] == 'r' && cp[3] == 'z'
136 && cp[4] >= '0' && cp[4] <= '9') {
137 booted_protocol = "SCSI";
138 booted_unit = cp[4] - '0';
139 }
140 else if (strncmp(cp+2, "tftp", 4) == 0)
141 booted_protocol = "BOOTP";
142 else if (strncmp(cp+2, "mop", 3) == 0)
143 booted_protocol = "MOP";
144 }
145 }
146
147 void
cpu_rootconf(void)148 cpu_rootconf(void)
149 {
150
151 printf("boot device: %s\n",
152 booted_device ? device_xname(booted_device) : "<unknown>");
153
154 rootconf();
155 }
156
157 /*
158 * Try to determine the boot device.
159 */
160 void
device_register(device_t dev,void * aux)161 device_register(device_t dev, void *aux)
162 {
163 static int found, initted, scsiboot, netboot;
164 static device_t ioasicdev;
165 device_t parent = device_parent(dev);
166
167 if (found)
168 return;
169
170 if (!initted) {
171 scsiboot = strcmp(booted_protocol, "SCSI") == 0;
172 netboot = (strcmp(booted_protocol, "BOOTP") == 0) ||
173 (strcmp(booted_protocol, "MOP") == 0);
174 initted = 1;
175 }
176
177 /*
178 * Check if IOASIC was the boot slot.
179 */
180 if (device_is_a(dev, "ioasic")) {
181 struct tc_attach_args *ta = aux;
182
183 if (ta->ta_slot == booted_slot)
184 ioasicdev = dev;
185 return;
186 }
187
188 /*
189 * Check for ASC controller on either IOASIC or TC option card.
190 */
191 if (scsiboot && device_is_a(dev, "asc")) {
192 struct tc_attach_args *ta = aux;
193
194 /*
195 * If boot was from IOASIC controller, ioasicdev will
196 * be the ASC parent.
197 * If boot was from a TC option card, the TC slot number
198 * of the ASC will match the boot slot.
199 */
200 if (parent == ioasicdev ||
201 ta->ta_slot == booted_slot) {
202 booted_controller = dev;
203 return;
204 }
205 }
206
207 /*
208 * If an SII device is configured, it's currently the only
209 * possible SCSI boot device.
210 */
211 if (scsiboot && device_is_a(dev, "sii")) {
212 booted_controller = dev;
213 return;
214 }
215
216 /*
217 * If we found the boot controller, if check disk/tape/cdrom device
218 * on that controller matches.
219 */
220 if (booted_controller &&
221 (device_is_a(dev, "sd") ||
222 device_is_a(dev, "st") ||
223 device_is_a(dev, "cd"))) {
224 struct scsipibus_attach_args *sa = aux;
225
226 if (device_parent(parent) != booted_controller)
227 return;
228 if (booted_unit != sa->sa_periph->periph_target)
229 return;
230 booted_device = dev;
231 found = 1;
232 return;
233 }
234
235 /*
236 * Check if netboot device.
237 */
238 if (netboot) {
239 struct tc_attach_args *ta = aux;
240
241 if ((
242 #if defined(DEC_3100) || defined(DEC_5100)
243 /* Only one Ethernet interface on 2100/3100/5100. */
244 systype == DS_PMAX || systype == DS_MIPSMATE ||
245 #endif
246 /* Only one Ethernet interface at IOASIC. */
247 parent == ioasicdev)
248 && device_is_a(dev, "le")) {
249 booted_device = dev;
250 found = 1;
251 return;
252 }
253
254 /* allow any TC network adapter */
255 if (device_class(dev) == DV_IFNET &&
256 device_is_a(parent, "tc") &&
257 ta->ta_slot == booted_slot) {
258 booted_device = dev;
259 found = 1;
260 return;
261 }
262 }
263 }
264