1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * 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 5.6 (Berkeley) 10/11/92 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 { 0, 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 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 } 104 105 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