1/*	$NetBSD$	*/
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#define __INTR_PRIVATE
50#include <sys/cdefs.h>
51__KERNEL_RCSID(0, "$NetBSD$");
52
53#include <sys/param.h>
54#include <sys/systm.h>
55#include <sys/buf.h>
56#include <sys/conf.h>
57#include <sys/reboot.h>
58#include <sys/device.h>
59
60#include <dev/scsipi/scsi_all.h>
61#include <dev/scsipi/scsipi_all.h>
62#include <dev/scsipi/scsiconf.h>
63
64#include <machine/cpu.h>
65#include <machine/mainboard.h>
66#include <machine/autoconf.h>
67
68/*
69 * The following several variables are related to
70 * the configuration process, and are used in initializing
71 * the machine.
72 */
73int	cpuspeed = 25;	/* approx # instr per usec. */
74
75extern int initcpu(void);		/*XXX*/
76
77void	findroot(device_t *, int *);
78
79struct mipsco_intrhand intrtab[MAX_INTR_COOKIES];
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 */
88void
89cpu_configure(void)
90{
91  	int s;
92
93	/*
94	 * Kick off autoconfiguration
95	 */
96	s = splhigh();
97	if (config_rootfound("mainbus", NULL) == NULL)
98		panic("no mainbus found");
99	initcpu();
100}
101
102void
103cpu_rootconf(void)
104{
105	findroot(&booted_device, &booted_partition);
106
107	printf("boot device: %s\n",
108	       booted_device ? booted_device->dv_xname : "<unknown>");
109	rootconf();
110}
111
112dev_t	bootdev = 0;
113char	boot_class;
114int	boot_id, boot_lun, boot_part;
115
116/*
117 * Attempt to find the device from which we were booted.
118 */
119void
120findroot(device_t *devpp, int *partp)
121{
122	device_t dv;
123	deviter_t di;
124
125	for (dv = deviter_first(&di, DEVITER_F_ROOT_FIRST);
126	     dv != NULL;
127	     dv = deviter_next(&di)) {
128		if (device_class(dv) == boot_class &&
129		    /* XXX device_unit() abuse */
130		    device_unit(dv) == boot_id)
131		    	break;
132	}
133	deviter_release(&di);
134	if (dv != NULL) {
135		*devpp = dv;
136		*partp = boot_part;
137		return;
138	}
139
140	/*
141	 * Default to "not found".
142	 */
143	*devpp = NULL;
144	*partp = 0;
145	return;
146}
147
148void
149makebootdev(char *cp)
150{
151	boot_class = -1;
152	boot_id = boot_lun = boot_part = 0;
153
154	if (strlen(cp) < 6)
155		return;
156	if (strncmp(cp, "dk", 2) == 0 && cp[4] == '(') { /* Disk */
157		cp += 5;
158		if (*cp >= '0' && *cp <= '9')
159			boot_lun = *cp++ - '0';
160		if (*cp == ',')
161			cp += 1;
162		if (*cp >= '0' && *cp <= '9')
163			boot_id = *cp++ - '0';
164		if (*cp == ',')
165			cp += 1;
166		if (*cp >= '0' && *cp <= '7')
167			boot_part = *cp - '0';
168		boot_class = DV_DISK;
169		return;
170	}
171}
172