1 /* $NetBSD: bootinfo_biosgeom.c,v 1.24 2019/08/01 13:11:03 manu Exp $ */ 2 3 /* 4 * Copyright (c) 1997 5 * Matthias Drochner. 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 BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 #include <sys/types.h> 30 #include <machine/disklabel.h> 31 #include <machine/cpu.h> 32 33 #include <lib/libkern/libkern.h> 34 #include <lib/libsa/stand.h> 35 36 #include "libi386.h" 37 #include "biosdisk_ll.h" 38 #include "bootinfo.h" 39 40 #ifdef BIOSDISK_EXTINFO_V3 41 static struct { 42 char *name; 43 int flag; 44 } bus_names[] = { {"ISA", BI_GEOM_BUS_ISA}, 45 {"PCI", BI_GEOM_BUS_PCI}, 46 {NULL, BI_GEOM_BUS_OTHER} }; 47 static struct { 48 char *name; 49 int flag; 50 } iface_names[] = { {"ATA", BI_GEOM_IFACE_ATA}, 51 {"ATAPI", BI_GEOM_IFACE_ATAPI}, 52 {"SCSI", BI_GEOM_IFACE_SCSI}, 53 {"USB", BI_GEOM_IFACE_USB}, 54 {"1394", BI_GEOM_IFACE_1394}, 55 {"FIBRE", BI_GEOM_IFACE_FIBRE}, 56 {NULL, BI_GEOM_IFACE_OTHER} }; 57 #endif 58 59 void 60 bi_getbiosgeom(void) 61 { 62 struct btinfo_biosgeom *bibg; 63 size_t bibg_len = sizeof(*bibg); 64 int i, j, nvalid; 65 int nhd; 66 unsigned int cksum; 67 struct biosdisk_ll d; 68 struct biosdisk_extinfo ed; 69 char buf[BIOSDISK_DEFAULT_SECSIZE]; 70 71 nhd = get_harddrives(); 72 #ifdef GEOM_DEBUG 73 printf("nhd %d\n", nhd); 74 #endif 75 76 bibg_len += nhd * sizeof(struct bi_biosgeom_entry); 77 bibg = alloc(bibg_len); 78 if (bibg == NULL) 79 return; 80 81 for (i = nvalid = 0; i < MAX_BIOSDISKS && nvalid < nhd; i++) { 82 d.dev = 0x80 + i; 83 84 if (set_geometry(&d, &ed)) 85 continue; 86 memset(&bibg->disk[nvalid], 0, sizeof(bibg->disk[nvalid])); 87 88 bibg->disk[nvalid].sec = d.sec; 89 bibg->disk[nvalid].head = d.head; 90 bibg->disk[nvalid].cyl = d.cyl; 91 bibg->disk[nvalid].dev = d.dev; 92 93 if (readsects(&d, 0, 1, buf, 0)) { 94 bibg->disk[nvalid].flags |= BI_GEOM_INVALID; 95 nvalid++; 96 continue; 97 } 98 99 #ifdef GEOM_DEBUG 100 printf("#%d: %x: C %d H %d S %d\n", nvalid, 101 d.dev, d.cyl, d.head, d.sec); 102 printf(" sz %d fl %x cyl %d head %d sec %d totsec %"PRId64" sbytes %d\n", 103 ed.size, ed.flags, ed.cyl, ed.head, ed.sec, 104 ed.totsec, ed.sbytes); 105 #endif 106 107 if (d.flags & BIOSDISK_INT13EXT) { 108 bibg->disk[nvalid].totsec = ed.totsec; 109 bibg->disk[nvalid].flags |= BI_GEOM_EXTINT13; 110 } 111 #ifdef BIOSDISK_EXTINFO_V3 112 #ifdef GEOM_DEBUG 113 printf(" edd_cfg %x, sig %x, len %x, bus %s type %s\n", 114 ed.edd_cfg, ed.devpath_sig, ed.devpath_len, 115 ed.host_bus, ed.iface_type); 116 #endif 117 118 /* The v3.0 stuff will help identify the disks */ 119 if (ed.size >= offsetof(struct biosdisk_ext13info, checksum) 120 && ed.devpath_sig == EXTINFO_DEVPATH_SIGNATURE) { 121 char *cp; 122 123 for (cp = (void *)&ed.devpath_sig, cksum = 0; 124 cp <= (char *)&ed.checksum; cp++) { 125 cksum += *cp; 126 } 127 if ((cksum & 0xff) != 0) 128 bibg->disk[nvalid].flags |= BI_GEOM_BADCKSUM; 129 #ifdef GEOM_DEBUG 130 printf("checksum %x\n", cksum & 0xff); 131 #endif 132 for (j = 0; ; j++) { 133 cp = bus_names[j].name; 134 if (cp == NULL) 135 break; 136 if (strncmp(cp, ed.host_bus, 137 sizeof(ed.host_bus)) == 0) 138 break; 139 } 140 #ifdef GEOM_DEBUG 141 printf("bus %s (%x)\n", cp ? cp : "null", 142 bus_names[j].flag); 143 #endif 144 bibg->disk[nvalid].flags |= bus_names[j].flag; 145 for (j = 0; ; j++) { 146 cp = iface_names[j].name; 147 if (cp == NULL) 148 break; 149 if (strncmp(cp, ed.iface_type, 150 sizeof(ed.iface_type)) == 0) 151 break; 152 } 153 bibg->disk[nvalid].flags |= iface_names[j].flag; 154 /* Dump raw interface path and device path */ 155 bibg->disk[nvalid].interface_path = 156 ed.interface_path.ip_32[0]; 157 bibg->disk[nvalid].device_path = 158 ed.device_path.dp_64[0]; 159 #ifdef GEOM_DEBUG 160 printf("device %s (%x) interface %x path %llx\n", 161 cp ? cp : "null", 162 iface_names[j].flag, 163 ed.interface_path.ip_32[0], 164 ed.device_path.dp_64[0]); 165 #endif 166 } 167 #endif 168 169 for (j = 0, cksum = 0; j < BIOSDISK_DEFAULT_SECSIZE; j++) 170 cksum += buf[j]; 171 bibg->disk[nvalid].cksum = cksum; 172 memcpy(bibg->disk[nvalid].mbrparts, &buf[MBR_PART_OFFSET], 173 sizeof(bibg->disk[nvalid].mbrparts)); 174 nvalid++; 175 } 176 177 bibg->num = nvalid; 178 179 if (nvalid < nhd) 180 bibg_len -= (nhd - nvalid) * sizeof(struct bi_biosgeom_entry); 181 182 BI_ADD(bibg, BTINFO_BIOSGEOM, bibg_len); 183 } 184
Indexes created Tue Sep 23 02:09:52 GMT 2025