bootinfo_biosgeom.c revision 1.15
1 /* $NetBSD: bootinfo_biosgeom.c,v 1.15 2005/06/22 06:06:34 junyoung 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 #define BIOSDISK_SECSIZE 512 /* XXX */ 41 42 #ifdef BIOSDISK_EXT13INFO_V3 43 static struct { 44 char *name; 45 int flag; 46 } bus_names[] = { {"ISA", BI_GEOM_BUS_ISA}, 47 {"PCI", BI_GEOM_BUS_PCI}, 48 {NULL, BI_GEOM_BUS_OTHER} }; 49 static struct { 50 char *name; 51 int flag; 52 } iface_names[] = { {"ATA", BI_GEOM_IFACE_ATA}, 53 {"ATAPI", BI_GEOM_IFACE_ATAPI}, 54 {"SCSI", BI_GEOM_IFACE_SCSI}, 55 {"USB", BI_GEOM_IFACE_USB}, 56 {"1394", BI_GEOM_IFACE_1394}, 57 {"FIBRE", BI_GEOM_IFACE_FIBRE}, 58 {NULL, BI_GEOM_IFACE_OTHER} }; 59 #endif 60 61 void 62 bi_getbiosgeom(void) 63 { 64 struct btinfo_biosgeom *bibg; 65 int i, j, nvalid; 66 int nhd = 0; 67 unsigned int cksum; 68 struct biosdisk_ll d; 69 struct biosdisk_ext13info ed; 70 char buf[BIOSDISK_SECSIZE]; 71 72 pvbcopy((void *)(0x400 + 0x75), &nhd, 1); 73 #ifdef GEOM_DEBUG 74 printf("nhd %d\n", nhd); 75 #endif 76 77 bibg = alloc(sizeof(struct btinfo_biosgeom) 78 + (nhd - 1) * sizeof(struct bi_biosgeom_entry)); 79 if (bibg == NULL) 80 return; 81 82 for (i = nvalid = 0; i < MAX_BIOSDISKS && nvalid < nhd; i++) { 83 84 d.dev = 0x80 + i; 85 86 if (set_geometry(&d, &ed)) 87 continue; 88 memset(&bibg->disk[nvalid], 0, sizeof(bibg->disk[nvalid])); 89 90 bibg->disk[nvalid].sec = d.sec; 91 bibg->disk[nvalid].head = d.head; 92 bibg->disk[nvalid].cyl = d.cyl; 93 bibg->disk[nvalid].dev = d.dev; 94 95 if (readsects(&d, 0, 1, buf, 0)) { 96 bibg->disk[nvalid].flags |= BI_GEOM_INVALID; 97 nvalid++; 98 continue; 99 } 100 101 #ifdef GEOM_DEBUG 102 printf("#%d: %x: C %d H %d S %d\n", nvalid, 103 d.dev, d.cyl, d.head, d.sec); 104 printf(" sz %d fl %x cyl %d head %d sec %d totsec %lld sbytes %d\n", 105 ed.size, ed.flags, ed.cyl, ed.head, ed.sec, 106 ed.totsec, ed.sbytes); 107 #endif 108 109 if (d.flags & BIOSDISK_EXT13) { 110 bibg->disk[nvalid].totsec = ed.totsec; 111 bibg->disk[nvalid].flags |= BI_GEOM_EXTINT13; 112 } 113 #ifdef BIOSDISK_EXT13INFO_V3 114 #ifdef GEOM_DEBUG 115 printf(" edd_cfg %x, sig %x, len %x, bus %s type %s\n", 116 ed.edd_cfg, ed.devpath_sig, ed.devpath_len, 117 ed.host_bus, ed.iface_type); 118 #endif 119 120 /* The v3.0 stuff will help identify the disks */ 121 if (ed.size >= offsetof(struct biosdisk_ext13info, checksum) 122 && ed.devpath_sig == EXT13_DEVPATH_SIGNATURE) { 123 char *cp; 124 125 for (cp = (void *)&ed.devpath_sig, cksum = 0; 126 cp <= (char *)&ed.checksum; cp++) { 127 cksum += *cp; 128 } 129 if ((cksum & 0xff) != 0) 130 bibg->disk[nvalid].flags |= BI_GEOM_BADCKSUM; 131 #ifdef GEOM_DEBUG 132 printf("checksum %x\n", cksum & 0xff); 133 #endif 134 for (j = 0; ; j++) { 135 cp = bus_names[j].name; 136 if (cp == NULL) 137 break; 138 if (strncmp(cp, ed.host_bus, 139 sizeof(ed.host_bus)) == 0) 140 break; 141 } 142 #ifdef GEOM_DEBUG 143 printf("bus %s (%x)\n", cp ? cp : "null", 144 bus_names[j].flag); 145 #endif 146 bibg->disk[nvalid].flags |= bus_names[j].flag; 147 for (j = 0; ; j++) { 148 cp = iface_names[j].name; 149 if (cp == NULL) 150 break; 151 if (strncmp(cp, ed.iface_type, 152 sizeof(ed.iface_type)) == 0) 153 break; 154 } 155 bibg->disk[nvalid].flags |= iface_names[j].flag; 156 /* Dump raw interface path and device path */ 157 bibg->disk[nvalid].interface_path = 158 ed.interface_path.ip_32[0]; 159 bibg->disk[nvalid].device_path = 160 ed.device_path.dp_64[0]; 161 #ifdef GEOM_DEBUG 162 printf("device %s (%x) interface %x path %llx\n", 163 cp ? cp : "null", 164 iface_names[j].flag, 165 ed.interface_path.ip_32[0], 166 ed.device_path.dp_64[0]); 167 #endif 168 } 169 #endif 170 171 for (j = 0, cksum = 0; j < BIOSDISK_SECSIZE; j++) 172 cksum += buf[j]; 173 bibg->disk[nvalid].cksum = cksum; 174 memcpy(bibg->disk[nvalid].dosparts, &buf[MBR_PART_OFFSET], 175 sizeof(bibg->disk[nvalid].dosparts)); 176 nvalid++; 177 } 178 179 bibg->num = nvalid; 180 181 BI_ADD(bibg, BTINFO_BIOSGEOM, sizeof(struct btinfo_biosgeom) 182 + nvalid * sizeof(struct bi_biosgeom_entry)); 183 } 184
Indexes created Mon Sep 29 15:09:53 GMT 2025