1 /* $OpenBSD: dev_i386.c,v 1.1 2019/05/10 21:20:42 mlarkin Exp $ */ 2 3 /* 4 * Copyright (c) 1996-1999 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/queue.h> 31 #include <sys/disklabel.h> 32 #include <dev/cons.h> 33 34 #include "libsa.h" 35 #include "biosdev.h" 36 #include "disk.h" 37 38 #ifdef SOFTRAID 39 #include <dev/biovar.h> 40 #include <dev/softraidvar.h> 41 #include <lib/libsa/softraid.h> 42 #include "softraid_amd64.h" 43 #endif 44 45 extern int debug; 46 47 /* XXX use slot for 'rd' for 'hd' pseudo-device */ 48 const char bdevs[][4] = { 49 "wd", "", "fd", "", "sd", "st", "cd", "", 50 "", "", "", "", "", "", "", "", "", "hd", "" 51 }; 52 const int nbdevs = nitems(bdevs); 53 54 const char cdevs[][4] = { 55 "cn", "", "", "", "", "", "", "", 56 "com", "", "", "", "pc" 57 }; 58 const int ncdevs = nitems(cdevs); 59 60 /* pass dev_t to the open routines */ 61 int 62 devopen(struct open_file *f, const char *fname, char **file) 63 { 64 struct devsw *dp = devsw; 65 register int i, rc = 1; 66 67 *file = (char *)fname; 68 69 #ifdef DEBUG 70 if (debug) 71 printf("devopen:"); 72 #endif 73 74 for (i = 0; i < ndevs && rc != 0; dp++, i++) { 75 #ifdef DEBUG 76 if (debug) 77 printf(" %s: ", dp->dv_name); 78 #endif 79 if ((rc = (*dp->dv_open)(f, file)) == 0) { 80 f->f_dev = dp; 81 if (strcmp("TFTP", dp->dv_name) != 0) { 82 /* 83 * Clear bootmac, to signal that we loaded 84 * this file from a non-network device. 85 */ 86 extern char *bootmac; 87 bootmac = NULL; 88 } 89 return 0; 90 } 91 #ifdef DEBUG 92 else if (debug) 93 printf("%d", rc); 94 #endif 95 96 } 97 #ifdef DEBUG 98 if (debug) 99 putchar('\n'); 100 #endif 101 102 if ((f->f_flags & F_NODEV) == 0) 103 f->f_dev = dp; 104 105 return rc; 106 } 107 108 void 109 devboot(dev_t bootdev, char *p) 110 { 111 #ifdef SOFTRAID 112 struct sr_boot_volume *bv; 113 struct sr_boot_chunk *bc; 114 struct diskinfo *dip = NULL; 115 #endif 116 int sr_boot_vol = -1; 117 int part_type = FS_UNUSED; 118 119 if (!bootdev) { 120 *p++ = 't'; 121 *p++ = 'f'; 122 *p++ = 't'; 123 *p++ = 'p'; 124 *p = '\0'; 125 return; 126 } 127 128 #ifdef SOFTRAID 129 /* 130 * Determine the partition type for the 'a' partition of the 131 * boot device. 132 */ 133 TAILQ_FOREACH(dip, &disklist, list) 134 if (dip->bios_info.bios_number == bootdev && 135 (dip->bios_info.flags & BDI_BADLABEL) == 0) 136 part_type = dip->disklabel.d_partitions[0].p_fstype; 137 138 /* 139 * See if we booted from a disk that is a member of a bootable 140 * softraid volume. 141 */ 142 SLIST_FOREACH(bv, &sr_volumes, sbv_link) { 143 if (bv->sbv_flags & BIOC_SCBOOTABLE) 144 SLIST_FOREACH(bc, &bv->sbv_chunks, sbc_link) 145 if (bc->sbc_disk == bootdev) 146 sr_boot_vol = bv->sbv_unit; 147 if (sr_boot_vol != -1) 148 break; 149 } 150 #endif 151 152 if (sr_boot_vol != -1 && part_type != FS_BSDFFS) { 153 *p++ = 's'; 154 *p++ = 'r'; 155 *p++ = '0' + sr_boot_vol; 156 } else if (bootdev & 0x100) { 157 *p++ = 'c'; 158 *p++ = 'd'; 159 *p++ = '0'; 160 } else { 161 if (bootdev & 0x80) 162 *p++ = 'h'; 163 else 164 *p++ = 'f'; 165 *p++ = 'd'; 166 *p++ = '0' + (bootdev & 0x7f); 167 } 168 *p++ = 'a'; 169 *p = '\0'; 170 } 171 172 char ttyname_buf[8]; 173 174 char * 175 ttyname(int fd) 176 { 177 snprintf(ttyname_buf, sizeof ttyname_buf, "%s%d", 178 cdevs[major(cn_tab->cn_dev)], minor(cn_tab->cn_dev)); 179 180 return ttyname_buf; 181 } 182 183 dev_t 184 ttydev(char *name) 185 { 186 int i, unit = -1; 187 char *no = name + strlen(name) - 1; 188 189 while (no >= name && *no >= '0' && *no <= '9') 190 unit = (unit < 0 ? 0 : (unit * 10)) + *no-- - '0'; 191 if (no < name || unit < 0) 192 return NODEV; 193 for (i = 0; i < ncdevs; i++) 194 if (strncmp(name, cdevs[i], no - name + 1) == 0) 195 return makedev(i, unit); 196 return NODEV; 197 } 198 199 int 200 cnspeed(dev_t dev, int sp) 201 { 202 if (major(dev) == 8) /* comN */ 203 return comspeed(dev, sp); 204 205 /* pc0 and anything else */ 206 return 9600; 207 } 208