1 /* $NetBSD: bootinfo_biosgeom.c,v 1.23 2017/01/24 11:09:14 nonaka 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 int i, j, nvalid; 64 int nhd; 65 unsigned int cksum; 66 struct biosdisk_ll d; 67 struct biosdisk_extinfo ed; 68 char buf[BIOSDISK_DEFAULT_SECSIZE]; 69 70 nhd = get_harddrives(); 71 #ifdef GEOM_DEBUG 72 printf("nhd %d\n", nhd); 73 #endif 74 75 bibg = alloc(sizeof(struct btinfo_biosgeom) 76 + (nhd - 1) * sizeof(struct bi_biosgeom_entry)); 77 if (bibg == NULL) 78 return; 79 80 for (i = nvalid = 0; i < MAX_BIOSDISKS && nvalid < nhd; i++) { 81 d.dev = 0x80 + i; 82 83 if (set_geometry(&d, &ed)) 84 continue; 85 memset(&bibg->disk[nvalid], 0, sizeof(bibg->disk[nvalid])); 86 87 bibg->disk[nvalid].sec = d.sec; 88 bibg->disk[nvalid].head = d.head; 89 bibg->disk[nvalid].cyl = d.cyl; 90 bibg->disk[nvalid].dev = d.dev; 91 92 if (readsects(&d, 0, 1, buf, 0)) { 93 bibg->disk[nvalid].flags |= BI_GEOM_INVALID; 94 nvalid++; 95 continue; 96 } 97 98 #ifdef GEOM_DEBUG 99 printf("#%d: %x: C %d H %d S %d\n", nvalid, 100 d.dev, d.cyl, d.head, d.sec); 101 printf(" sz %d fl %x cyl %d head %d sec %d totsec %"PRId64" sbytes %d\n", 102 ed.size, ed.flags, ed.cyl, ed.head, ed.sec, 103 ed.totsec, ed.sbytes); 104 #endif 105 106 if (d.flags & BIOSDISK_INT13EXT) { 107 bibg->disk[nvalid].totsec = ed.totsec; 108 bibg->disk[nvalid].flags |= BI_GEOM_EXTINT13; 109 } 110 #ifdef BIOSDISK_EXTINFO_V3 111 #ifdef GEOM_DEBUG 112 printf(" edd_cfg %x, sig %x, len %x, bus %s type %s\n", 113 ed.edd_cfg, ed.devpath_sig, ed.devpath_len, 114 ed.host_bus, ed.iface_type); 115 #endif 116 117 /* The v3.0 stuff will help identify the disks */ 118 if (ed.size >= offsetof(struct biosdisk_ext13info, checksum) 119 && ed.devpath_sig == EXTINFO_DEVPATH_SIGNATURE) { 120 char *cp; 121 122 for (cp = (void *)&ed.devpath_sig, cksum = 0; 123 cp <= (char *)&ed.checksum; cp++) { 124 cksum += *cp; 125 } 126 if ((cksum & 0xff) != 0) 127 bibg->disk[nvalid].flags |= BI_GEOM_BADCKSUM; 128 #ifdef GEOM_DEBUG 129 printf("checksum %x\n", cksum & 0xff); 130 #endif 131 for (j = 0; ; j++) { 132 cp = bus_names[j].name; 133 if (cp == NULL) 134 break; 135 if (strncmp(cp, ed.host_bus, 136 sizeof(ed.host_bus)) == 0) 137 break; 138 } 139 #ifdef GEOM_DEBUG 140 printf("bus %s (%x)\n", cp ? cp : "null", 141 bus_names[j].flag); 142 #endif 143 bibg->disk[nvalid].flags |= bus_names[j].flag; 144 for (j = 0; ; j++) { 145 cp = iface_names[j].name; 146 if (cp == NULL) 147 break; 148 if (strncmp(cp, ed.iface_type, 149 sizeof(ed.iface_type)) == 0) 150 break; 151 } 152 bibg->disk[nvalid].flags |= iface_names[j].flag; 153 /* Dump raw interface path and device path */ 154 bibg->disk[nvalid].interface_path = 155 ed.interface_path.ip_32[0]; 156 bibg->disk[nvalid].device_path = 157 ed.device_path.dp_64[0]; 158 #ifdef GEOM_DEBUG 159 printf("device %s (%x) interface %x path %llx\n", 160 cp ? cp : "null", 161 iface_names[j].flag, 162 ed.interface_path.ip_32[0], 163 ed.device_path.dp_64[0]); 164 #endif 165 } 166 #endif 167 168 for (j = 0, cksum = 0; j < BIOSDISK_DEFAULT_SECSIZE; j++) 169 cksum += buf[j]; 170 bibg->disk[nvalid].cksum = cksum; 171 memcpy(bibg->disk[nvalid].mbrparts, &buf[MBR_PART_OFFSET], 172 sizeof(bibg->disk[nvalid].mbrparts)); 173 nvalid++; 174 } 175 176 bibg->num = nvalid; 177 178 BI_ADD(bibg, BTINFO_BIOSGEOM, sizeof(struct btinfo_biosgeom) 179 + nvalid * sizeof(struct bi_biosgeom_entry)); 180 } 181