1 /* $NetBSD: autoconf.c,v 1.24 2017/06/22 16:46:53 flxd 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 /*
42 * Setup the system to run on the current machine.
43 *
44 * Configure() is called at boot time. Available
45 * devices are determined (from possibilities mentioned in ioconf.c),
46 * and the drivers are initialized.
47 */
48
49 /*
50 * autoconf.c for news68k - from newsmips
51 */
52
53 #include <sys/cdefs.h>
54 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.24 2017/06/22 16:46:53 flxd Exp $");
55
56 #include "scsibus.h"
57
58 #include <sys/param.h>
59 #include <sys/systm.h>
60 #include <sys/conf.h>
61 #include <sys/reboot.h>
62 #include <sys/device.h>
63
64 #include <dev/scsipi/scsipi_all.h>
65 #include <dev/scsipi/scsiconf.h>
66
67 #include <machine/cpu.h>
68 #include <machine/romcall.h>
69 #include <machine/autoconf.h>
70
71 #include <news68k/news68k/isr.h>
72
73 /*
74 * The following several variables are related to
75 * the configuration process, and are used in initializing
76 * the machine.
77 */
78
79 static void findroot(void);
80
81 /*
82 * Determine mass storage and memory configuration for a machine.
83 * Print CPU type, and then iterate over an array of devices
84 * found on the baseboard or in TURBOchannel option slots.
85 * Once devices are configured, enable interrupts, and probe
86 * for attached scsi devices.
87 */
88 void
cpu_configure(void)89 cpu_configure(void)
90 {
91 /*
92 * Kick off autoconfiguration
93 */
94 (void) splhigh();
95
96 /* Initialize the interrupt handlers. */
97 isrinit();
98
99 if (config_rootfound("mainbus", NULL) == NULL)
100 panic("autoconfig failed, no root");
101
102 /* Turn on interrupts */
103 (void) spl0();
104 }
105
106 void
cpu_rootconf(void)107 cpu_rootconf(void)
108 {
109
110 findroot();
111
112 printf("boot device: %s\n",
113 booted_device ? device_xname(booted_device) : "<unknown>");
114
115 rootconf();
116 }
117
118 u_long bootdev = 0; /* should be dev_t, but not until 32 bits */
119
120 /*
121 * Attempt to find the device from which we were booted.
122 */
123 void
findroot(void)124 findroot(void)
125 {
126 #if NSCSIBUS > 0
127 int ctlr, part, type;
128 device_t dv;
129
130 if (BOOTDEV_MAG(bootdev) != 5) /* NEWS-OS's B_DEVMAGIC */
131 return;
132
133 ctlr = BOOTDEV_CTLR(bootdev); /* SCSI ID */
134 part = BOOTDEV_PART(bootdev); /* LUN */
135 type = BOOTDEV_TYPE(bootdev);
136
137 if (type != BOOTDEV_SD)
138 return;
139
140 /*
141 * XXX assumes only one controller exists.
142 */
143 if ((dv = device_find_by_xname("scsibus0")) != NULL) {
144 struct scsibus_softc *sdv = device_private(dv);
145 struct scsipi_periph *periph;
146
147 periph = scsipi_lookup_periph(sdv->sc_channel, ctlr, 0);
148 if (periph != NULL) {
149 booted_device = periph->periph_dev;
150 booted_partition = part;
151 }
152 }
153 #endif
154 }
155