xref: /netbsd-src/sys/arch/hpcarm/hpcarm/autoconf.c (revision 7433666e375b3ac4cc764df5a6726be98bc1cdd5)
1 /*	$NetBSD: autoconf.c,v 1.24 2023/12/20 14:50:02 thorpej Exp $	*/
2 
3 /*
4  * Copyright (c) 1994-1998 Mark Brinicombe.
5  * Copyright (c) 1994 Brini.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. All advertising materials mentioning features or use of this software
17  *    must display the following acknowledgement:
18  *	This product includes software developed by Mark Brinicombe for
19  *      the NetBSD project.
20  * 4. The name of the company nor the name of the author may be used to
21  *    endorse or promote products derived from this software without specific
22  *    prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
25  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
28  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30  * 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  */
37 
38 #include <sys/cdefs.h>
39 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.24 2023/12/20 14:50:02 thorpej Exp $");
40 
41 #include "opt_md.h"
42 
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/conf.h>
46 #include <sys/device.h>
47 #include <sys/disklabel.h>
48 #include <sys/intr.h>
49 #include <sys/kernel.h>
50 #include <sys/reboot.h>
51 
52 #include <uvm/uvm_extern.h>
53 
54 #include <arm/arm32/machdep.h>
55 
56 #include <machine/bootconfig.h>
57 #include <machine/config_hook.h>
58 
59 #include "opt_cputypes.h"
60 #if defined(CPU_SA1100) || defined(CPU_SA1110)
61 #include "sacom.h"
62 #endif
63 
64 extern dev_t dumpdev;
65 
66 void isa_intr_init(void);
67 
68 #ifndef MEMORY_DISK_IS_ROOT
69 static void get_device(const char *);
70 static void set_root_device(void);
71 #endif
72 
73 #ifndef MEMORY_DISK_IS_ROOT
74 /* Decode a device name to a major and minor number */
75 static void
get_device(const char * name)76 get_device(const char *name)
77 {
78 	int unit, part;
79 	char devname[16];
80 	const char *cp;
81 	device_t dv;
82 
83 	if (strncmp(name, "/dev/", 5) == 0)
84 		name += 5;
85 
86 	if (devsw_name2blk(name, devname, sizeof(devname)) == -1)
87 		return;
88 
89 	name += strlen(devname);
90 	unit = part = 0;
91 
92 	cp = name;
93 	while (*cp >= '0' && *cp <= '9')
94 		unit = (unit * 10) + (*cp++ - '0');
95 	if (cp == name)
96 		return;
97 
98 	if (*cp >= 'a' && *cp <= ('a' + MAXPARTITIONS))
99 		part = *cp - 'a';
100 	else if (*cp != '\0' && *cp != ' ')
101 		return;
102 	if ((dv = device_find_by_driver_unit(devname, unit)) != NULL) {
103 		booted_device = dv;
104 		booted_partition = part;
105 	}
106 }
107 
108 /* Set the rootdev variable from the root specifier in the boot args */
109 static void
set_root_device(void)110 set_root_device(void)
111 {
112 
113 	if (boot_file[0] != '\0')
114 		get_device(boot_file);
115 	else
116 		/* hpcboot doesn't pass a bootdev arg if wd0 */
117 		get_device("wd0");
118 }
119 #endif /* ifndef MEMORY_DISK_IS_ROOT */
120 
121 /*
122  * Set up the root device from the boot args
123  */
124 void
cpu_rootconf(void)125 cpu_rootconf(void)
126 {
127 #ifndef MEMORY_DISK_IS_ROOT
128 	set_root_device();
129 
130 	printf("boot device: %s\n",
131 	    booted_device != NULL ? device_xname(booted_device) : "<unknown>");
132 #endif
133 	rootconf();
134 }
135 
136 
137 /*
138  * void cpu_configure()
139  *
140  * Configure all the root devices
141  * The root devices are expected to configure their own children
142  */
143 void
cpu_configure(void)144 cpu_configure(void)
145 {
146 
147 	config_hook_init();
148 
149 	/*
150 	 * Configure all the roots.
151 	 * We have to have a mainbus
152 	 */
153 #if 0
154 	startrtclock();
155 #endif
156 
157 	/*
158 	 * Since the ICU is not standard on the ARM we don't know
159 	 * if we have one until we find a bridge.
160 	 * Since various PCI interrupts could be routed via the ICU
161 	 * (for PCI devices in the bridge) we need to set up the ICU
162 	 * now so that these interrupts can be established correctly
163 	 * i.e. This is a hack.
164 	 */
165 
166 	if (config_rootfound("mainbus", NULL) == NULL)
167 		panic("configure: mainbus not configured");
168 
169 	/* Debugging information */
170 #if defined(DIAGNOSTIC)
171 #if defined(CPU_SA1100) || defined(CPU_SA1110)
172 	dump_spl_masks();
173 #endif
174 #endif	/* DIAGNOSTIC */
175 
176 	/* Time to start taking interrupts so lets open the flood gates .... */
177 	(void)spl0();
178 }
179 
180 void
device_register(device_t dev,void * aux)181 device_register(device_t dev, void *aux)
182 {
183 }
184 
185 /*
186  * This entire table could be autoconfig()ed but that would mean that
187  * the kernel's idea of the console would be out of sync with that of
188  * the standalone boot.  I think it best that they both use the same
189  * known algorithm unless we see a pressing need otherwise.
190  */
191 
192 #include "biconsdev.h"
193 
194 #include <dev/cons.h>
195 
196 cons_decl(sacom);
197 #define biconscnpollc	nullcnpollc
198 cons_decl(bicons);
199 
200 struct consdev constab[] = {
201 #if (NSACOM > 0)
202 	cons_init(sacom),
203 #endif
204 #if (NBICONSDEV > 0)
205 	cons_init(bicons),
206 #endif
207 	{ NULL },
208 };
209