Annotation of sys/arch/aviion/aviion/autoconf.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: autoconf.c,v 1.5 2007/06/15 01:19:06 deraadt Exp $ */
2: /*
3: * Copyright (c) 1998 Steve Murphree, Jr.
4: * Copyright (c) 1996 Nivas Madhur
5: * Copyright (c) 1994 Christian E. Hopps
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 Christian E. Hopps.
19: * 4. The name of the author may not be used to endorse or promote products
20: * derived from this software without specific prior written permission
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32: *
33: */
34: #include <sys/param.h>
35: #include <sys/systm.h>
36: #include <sys/buf.h>
37: #include <sys/dkstat.h>
38: #include <sys/reboot.h>
39: #include <sys/conf.h>
40: #include <sys/device.h>
41: #include <sys/disklabel.h>
42: #include <sys/kernel.h>
43:
44: #include <machine/asm_macro.h>
45: #include <machine/autoconf.h>
46: #include <machine/cpu.h>
47: #include <machine/vmparam.h>
48:
49: #include <scsi/scsi_all.h>
50: #include <scsi/scsiconf.h>
51:
52: #include <dev/cons.h>
53:
54: /*
55: * The following several variables are related to
56: * the configuration process, and are used in initializing
57: * the machine.
58: */
59:
60: void dumpconf(void);
61:
62: int cold = 1; /* 1 if still booting */
63:
64: struct device *bootdv; /* set by device drivers (if found) */
65:
66: u_int bootdevtype;
67:
68: #define BT_CIEN 0x6369656e
69: #define BT_DGEN 0x6467656e
70: #define BT_HKEN 0x686b656e
71: #define BT_INEN 0x696e656e
72: #define BT_INSC 0x696e7363
73: #define BT_NCSC 0x6e637363
74:
75: /*
76: * called at boot time, configure all devices on the system.
77: */
78: void
79: cpu_configure()
80: {
81: printf("bootpath: '%s' dev %u unit %u part %u\n",
82: bootargs, bootdev, bootunit, bootpart);
83:
84: if (config_rootfound("mainbus", "mainbus") == 0)
85: panic("no mainbus found");
86:
87: /*
88: * Turn external interrupts on.
89: */
90: set_psr(get_psr() & ~PSR_IND);
91: spl0();
92: cold = 0;
93: }
94:
95: void
96: diskconf(void)
97: {
98: printf("boot device: %s\n",
99: (bootdv) ? bootdv->dv_xname : "<unknown>");
100:
101: setroot(bootdv, bootpart, RB_USERREQ);
102: dumpconf();
103:
104: }
105:
106: /*
107: * Parse the commandline.
108: *
109: * This has two goals: first, turn the necessary options into boothowto
110: * flags; second, convert the PROM boot device into the matching OpenBSD
111: * driver name.
112: */
113:
114: static char *stws(char *);
115: static char *
116: stws(char *p)
117: {
118: while (*p != ' ' && *p != '\0')
119: p++;
120:
121: while (*p == ' ')
122: p++;
123:
124: return (p);
125: }
126:
127: void
128: cmdline_parse(void)
129: {
130: char *p;
131:
132: /*
133: * Skip boot device ``foo(ctrl,dev,lun)'' and filename,
134: * i.e. eat everything until whitespace.
135: */
136: p = stws(bootargs);
137: while (*p != '\0') {
138: if (*p++ == '-')
139: switch (*p) {
140: case 'a':
141: boothowto |= RB_ASKNAME;
142: break;
143: case 'b':
144: boothowto |= RB_KDB;
145: break;
146: case 'c':
147: boothowto |= RB_CONFIG;
148: break;
149: case 's':
150: boothowto |= RB_SINGLE;
151: break;
152: }
153: p = stws(p);
154: }
155:
156: /*
157: * Now parse the boot device. We are only interested in the
158: * device type, since the PROM has cracked the controller, unit
159: * and partition numbers for us already, and we do not care about
160: * our own filename...
161: *
162: * Actually we rely upon the fact that all device strings are
163: * exactly 4 characters long, and appears at the beginning of the
164: * commandline, so we can simply use its numerical value, as a
165: * word, to tell device types apart.
166: */
167: bootdevtype = *(int *)bootargs;
168: }
169:
170: void
171: device_register(struct device *dev, void *aux)
172: {
173: if (bootdv != NULL)
174: return;
175:
176: switch (bootdevtype) {
177: case BT_INEN:
178: /*
179: * Internal ethernet is le at syscon only, and we do not
180: * care about controller and unit numbers.
181: */
182: if (strncmp("le", dev->dv_xname, 2) == 0 &&
183: strncmp("syscon", dev->dv_parent->dv_xname, 6) == 0)
184: bootdv = dev;
185: break;
186: }
187: }
188:
189: struct nam2blk nam2blk[] = {
190: { "sd", 4 },
191: { "cd", 6 },
192: { "rd", 7 },
193: { NULL, -1 }
194: };
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