Annotation of sys/arch/mvme88k/mvme88k/autoconf.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: autoconf.c,v 1.39 2007/06/15 01:19:08 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> /* enable/disable interrupts */
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: int get_target(int *, int *, int *);
62:
63: int cold = 1; /* 1 if still booting */
64:
65: paddr_t bootaddr;
66: int bootpart, bootbus;
67: struct device *bootdv; /* set by device drivers (if found) */
68:
69: /*
70: * called at boot time, configure all devices on the system.
71: */
72: void
73: cpu_configure()
74: {
75: if (config_rootfound("mainbus", "mainbus") == 0)
76: panic("no mainbus found");
77:
78: /*
79: * Turn external interrupts on.
80: *
81: * XXX We have a race here. If we enable interrupts after setroot(),
82: * the kernel dies.
83: */
84: set_psr(get_psr() & ~PSR_IND);
85: spl0();
86:
87: /*
88: * Finally switch to the real console driver,
89: * and say goodbye to the BUG!
90: */
91: cn_tab = NULL;
92: cninit();
93: cold = 0;
94: }
95:
96: void
97: diskconf(void)
98: {
99: printf("boot device: %s\n",
100: (bootdv) ? bootdv->dv_xname : "<unknown>");
101:
102: setroot(bootdv, bootpart, RB_USERREQ);
103: dumpconf();
104: }
105:
106: void
107: device_register(struct device *dev, void *aux)
108: {
109: if (bootpart == -1) /* ignore flag from controller driver? */
110: return;
111:
112: /*
113: * scsi: sd,cd
114: */
115: if (strncmp("cd", dev->dv_xname, 2) == 0 ||
116: strncmp("sd", dev->dv_xname, 2) == 0) {
117: struct scsi_attach_args *sa = aux;
118: int target, bus, lun;
119:
120: if (get_target(&target, &bus, &lun) != 0)
121: return;
122:
123: /* make sure we are on the expected scsibus */
124: if (bootbus != bus)
125: return;
126:
127: if (sa->sa_sc_link->target == target &&
128: sa->sa_sc_link->lun == lun) {
129: bootdv = dev;
130: return;
131: }
132: }
133:
134: /*
135: * ethernet: ie,le
136: */
137: else if (strncmp("ie", dev->dv_xname, 2) == 0 ||
138: strncmp("le", dev->dv_xname, 2) == 0) {
139: struct confargs *ca = aux;
140:
141: if (ca->ca_paddr == bootaddr) {
142: bootdv = dev;
143: return;
144: }
145: }
146: }
147:
148: /*
149: * Returns the ID of the SCSI disk based on Motorola's CLUN/DLUN stuff
150: * bootdev == CLUN << 8 | DLUN.
151: * This handles SBC SCSI and MVME32[78].
152: */
153: int
154: get_target(int *target, int *bus, int *lun)
155: {
156: extern int bootdev;
157:
158: switch (bootdev >> 8) {
159: /* built-in controller */
160: case 0x00:
161: /* MVME327 */
162: case 0x02:
163: case 0x03:
164: *bus = 0;
165: *target = (bootdev & 0x70) >> 4;
166: *lun = (bootdev & 0x07);
167: return (0);
168: /* MVME328 */
169: case 0x06:
170: case 0x07:
171: case 0x16:
172: case 0x17:
173: case 0x18:
174: case 0x19:
175: *bus = (bootdev & 0x40) >> 6;
176: *target = (bootdev & 0x38) >> 3;
177: *lun = (bootdev & 0x07);
178: return (0);
179: default:
180: return (ENODEV);
181: }
182: }
183:
184: struct nam2blk nam2blk[] = {
185: { "sd", 4 },
186: { "cd", 6 },
187: { "rd", 7 },
188: { NULL, -1 }
189: };
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