1 /*-
2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * %sccs.include.redist.c%
9 *
10 * @(#)swapgeneric.c 8.1 (Berkeley) 06/16/93
11 */
12
13 #include <machine/pte.h>
14
15 #include <sys/param.h>
16 #include <sys/conf.h>
17 #include <sys/buf.h>
18 #include <sys/vm.h>
19 #include <sys/systm.h>
20 #include <sys/reboot.h>
21
22 /*
23 * Generic configuration; all in one
24 */
25 dev_t rootdev = makedev(0,0);
26 dev_t dumpdev = makedev(0,1);
27 int nswap;
28 struct swdevt swdevt[] = {
29 { 1, 0, 0 },
30 { NODEV, 1, 0 },
31 };
32 long dumplo;
33 int dmmin, dmmax, dmtext;
34
35 extern struct driver wddriver;
36
37 struct genericconf {
38 caddr_t gc_driver;
39 char *gc_name;
40 dev_t gc_root;
41 } genericconf[] = {
42 { (caddr_t)&wddriver, "wd", makedev(0, 0), },
43 { 0 },
44 };
45
setconf()46 setconf()
47 {
48 #ifdef notdef
49 register struct genericconf *gc;
50 int unit, swaponroot = 0;
51
52 if (rootdev != NODEV)
53 goto doswap;
54 if (boothowto & RB_ASKNAME) {
55 char name[128];
56 retry:
57 printf("root device? ");
58 gets(name);
59 for (gc = genericconf; gc->gc_driver; gc++)
60 if (gc->gc_name[0] == name[0] &&
61 gc->gc_name[1] == name[1])
62 goto gotit;
63 goto bad;
64 gotit:
65 if (name[3] == '*') {
66 name[3] = name[4];
67 swaponroot++;
68 }
69 if (name[2] >= '0' && name[2] <= '7' && name[3] == 0) {
70 unit = name[2] - '0';
71 goto found;
72 }
73 printf("bad/missing unit number\n");
74 bad:
75 printf("use dk%%d\n");
76 goto retry;
77 }
78 unit = 0;
79 for (gc = genericconf; gc->gc_driver; gc++) {
80 for (ui = vbdinit; ui->ui_driver; ui++) {
81 if (ui->ui_alive == 0)
82 continue;
83 if (ui->ui_unit == 0 && ui->ui_driver ==
84 (struct vba_driver *)gc->gc_driver) {
85 printf("root on %s0\n",
86 ui->ui_driver->ud_dname);
87 goto found;
88 }
89 }
90 }
91 printf("no suitable root\n");
92 asm("halt");
93 found:
94 gc->gc_root = makedev(major(gc->gc_root), unit*8);
95 rootdev = gc->gc_root;
96 doswap:
97 swdevt[0].sw_dev = argdev = dumpdev =
98 makedev(major(rootdev), minor(rootdev)+1);
99 /* swap size and dumplo set during autoconfigure */
100 if (swaponroot)
101 rootdev = dumpdev;
102 #endif
103 }
104
gets(cp)105 gets(cp)
106 char *cp;
107 {
108 register char *lp;
109 register c;
110
111 lp = cp;
112 for (;;) {
113 printf("%c", c = cngetc()&0177);
114 switch (c) {
115 case '\n':
116 case '\r':
117 *lp++ = '\0';
118 return;
119 case '\b':
120 case '\177':
121 if (lp > cp) {
122 printf(" \b");
123 lp--;
124 }
125 continue;
126 case '#':
127 lp--;
128 if (lp < cp)
129 lp = cp;
130 continue;
131 case '@':
132 case 'u'&037:
133 lp = cp;
134 printf("%c", '\n');
135 continue;
136 default:
137 *lp++ = c;
138 }
139 }
140 }
141