bootinfo_biosgeom.c revision 1.12
1 /* $NetBSD: bootinfo_biosgeom.c,v 1.12 2003/10/08 04:25:45 lukem 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the NetBSD Project 18 * by Matthias Drochner. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/types.h> 36 #include <machine/disklabel.h> 37 #include <machine/cpu.h> 38 39 #include <lib/libkern/libkern.h> 40 #include <lib/libsa/stand.h> 41 42 #include "libi386.h" 43 #include "biosdisk_ll.h" 44 #include "bootinfo.h" 45 46 #ifdef BIOSDISK_EXT13INFO_V3 47 static struct { 48 char *name; 49 int flag; 50 } bus_names[] = { {"ISA", BI_GEOM_BUS_ISA}, 51 {"PCI", BI_GEOM_BUS_PCI}, 52 {NULL, BI_GEOM_BUS_OTHER} }; 53 static struct { 54 char *name; 55 int flag; 56 } iface_names[] = { {"ATA", BI_GEOM_IFACE_ATA}, 57 {"ATAPI", BI_GEOM_IFACE_ATAPI}, 58 {"SCSI", BI_GEOM_IFACE_SCSI}, 59 {"USB", BI_GEOM_IFACE_USB}, 60 {"1394", BI_GEOM_IFACE_1394}, 61 {"FIBRE", BI_GEOM_IFACE_FIBRE}, 62 {NULL, BI_GEOM_IFACE_OTHER} }; 63 #endif 64 65 void bi_getbiosgeom() 66 { 67 struct btinfo_biosgeom *bibg; 68 int i, j, nvalid; 69 unsigned char nhd; 70 unsigned int cksum; 71 struct biosdisk_ll d; 72 struct biosdisk_ext13info ed; 73 char buf[BIOSDISK_SECSIZE]; 74 75 pvbcopy((void *)(0x400 + 0x75), &nhd, 1); 76 #ifdef GEOM_DEBUG 77 printf("nhd %d\n", (int)nhd); 78 #endif 79 80 bibg = alloc(sizeof(struct btinfo_biosgeom) 81 + (nhd - 1) * sizeof(struct bi_biosgeom_entry)); 82 if (!bibg) 83 return; 84 85 for (i = nvalid = 0; i < MAX_BIOSDISKS && nvalid < (int)nhd; i++) { 86 87 d.dev = 0x80 + i; 88 89 if (set_geometry(&d, &ed)) 90 continue; 91 memset(&bibg->disk[nvalid], 0, sizeof(bibg->disk[nvalid])); 92 93 bibg->disk[nvalid].sec = d.sec; 94 bibg->disk[nvalid].head = d.head; 95 bibg->disk[nvalid].cyl = d.cyl; 96 bibg->disk[nvalid].dev = d.dev; 97 98 if (readsects(&d, 0, 1, buf, 0)) { 99 bibg->disk[nvalid].flags |= BI_GEOM_INVALID; 100 nvalid++; 101 continue; 102 } 103 104 #ifdef GEOM_DEBUG 105 printf("#%d: %x: C %d H %d S %d\n", nvalid, 106 d.dev, d.cyl, d.head, d.sec); 107 printf(" sz %d fl %x cyl %d head %d sec %d totsec %lld sbytes %d\n", 108 ed.size, ed.flags, ed.cyl, ed.head, ed.sec, 109 ed.totsec, ed.sbytes); 110 #endif 111 112 if (d.flags & BIOSDISK_EXT13) { 113 bibg->disk[nvalid].totsec = ed.totsec; 114 bibg->disk[nvalid].flags |= BI_GEOM_EXTINT13; 115 } 116 #ifdef BIOSDISK_EXT13INFO_V3 117 #ifdef GEOM_DEBUG 118 printf(" edd_cfg %x, sig %x, len %x, bus %s type %s\n", 119 ed.edd_cfg, ed.devpath_sig, ed.devpath_len, 120 ed.host_bus, ed.iface_type); 121 #endif 122 123 /* The v3.0 stuff will help identify the disks */ 124 if (ed.size >= offsetof(struct biosdisk_ext13info, checksum) 125 && ed.devpath_sig == EXT13_DEVPATH_SIGNATURE) { 126 char *cp; 127 128 for (cp = (void *)&ed.devpath_sig, cksum = 0; 129 cp <= (char *)&ed.checksum; cp++) { 130 cksum += *cp; 131 } 132 if ((cksum & 0xff) != 0) 133 bibg->disk[nvalid].flags |= BI_GEOM_BADCKSUM; 134 #ifdef GEOM_DEBUG 135 printf("checksum %x\n", cksum & 0xff); 136 #endif 137 for (j = 0; ; j++) { 138 cp = bus_names[j].name; 139 if (cp == NULL) 140 break; 141 if (strncmp(cp, ed.host_bus, 142 sizeof ed.host_bus) == 0) 143 break; 144 } 145 #ifdef GEOM_DEBUG 146 printf("bus %s (%x)\n", cp ? cp : "null", 147 bus_names[j].flag); 148 #endif 149 bibg->disk[nvalid].flags |= bus_names[j].flag; 150 for (j = 0; ; j++) { 151 cp = iface_names[j].name; 152 if (cp == NULL) 153 break; 154 if (strncmp(cp, ed.iface_type, 155 sizeof ed.iface_type) == 0) 156 break; 157 } 158 bibg->disk[nvalid].flags |= iface_names[j].flag; 159 /* Dump raw interface path and device path */ 160 bibg->disk[nvalid].interface_path = 161 ed.interface_path.ip_32[0]; 162 bibg->disk[nvalid].device_path = 163 ed.device_path.dp_64[0]; 164 #ifdef GEOM_DEBUG 165 printf("device %s (%x) interface %x path %llx\n", 166 cp ? cp : "null", 167 iface_names[j].flag, 168 ed.interface_path.ip_32[0], 169 ed.device_path.dp_64[0]); 170 #endif 171 } 172 #endif 173 174 for (j = 0, cksum = 0; j < BIOSDISK_SECSIZE; j++) 175 cksum += buf[j]; 176 bibg->disk[nvalid].cksum = cksum; 177 memcpy(bibg->disk[nvalid].dosparts, &buf[MBR_PART_OFFSET], 178 sizeof(bibg->disk[nvalid].dosparts)); 179 nvalid++; 180 } 181 182 bibg->num = nvalid; 183 184 BI_ADD(bibg, BTINFO_BIOSGEOM, sizeof(struct btinfo_biosgeom) 185 + nvalid * sizeof(struct bi_biosgeom_entry)); 186 } 187
Indexes created Sun Sep 28 16:09:52 GMT 2025