md.c revision 1.2.6.2
1 1.2.6.2 tls /* $NetBSD: md.c,v 1.2.6.2 2014/08/20 00:05:14 tls Exp $ */ 2 1.2.6.2 tls 3 1.2.6.2 tls /* 4 1.2.6.2 tls * Copyright 1997 Piermont Information Systems Inc. 5 1.2.6.2 tls * All rights reserved. 6 1.2.6.2 tls * 7 1.2.6.2 tls * Based on code written by Philip A. Nelson for Piermont Information 8 1.2.6.2 tls * Systems Inc. 9 1.2.6.2 tls * 10 1.2.6.2 tls * Redistribution and use in source and binary forms, with or without 11 1.2.6.2 tls * modification, are permitted provided that the following conditions 12 1.2.6.2 tls * are met: 13 1.2.6.2 tls * 1. Redistributions of source code must retain the above copyright 14 1.2.6.2 tls * notice, this list of conditions and the following disclaimer. 15 1.2.6.2 tls * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.6.2 tls * notice, this list of conditions and the following disclaimer in the 17 1.2.6.2 tls * documentation and/or other materials provided with the distribution. 18 1.2.6.2 tls * 3. The name of Piermont Information Systems Inc. may not be used to endorse 19 1.2.6.2 tls * or promote products derived from this software without specific prior 20 1.2.6.2 tls * written permission. 21 1.2.6.2 tls * 22 1.2.6.2 tls * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS'' 23 1.2.6.2 tls * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 1.2.6.2 tls * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 1.2.6.2 tls * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE 26 1.2.6.2 tls * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 1.2.6.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 1.2.6.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 1.2.6.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 1.2.6.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 1.2.6.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 1.2.6.2 tls * THE POSSIBILITY OF SUCH DAMAGE. 33 1.2.6.2 tls */ 34 1.2.6.2 tls 35 1.2.6.2 tls /* md.c -- arc machine specific routines */ 36 1.2.6.2 tls 37 1.2.6.2 tls #include <sys/param.h> 38 1.2.6.2 tls #include <sys/sysctl.h> 39 1.2.6.2 tls #include <stdio.h> 40 1.2.6.2 tls #include <util.h> 41 1.2.6.2 tls #include <machine/cpu.h> 42 1.2.6.2 tls 43 1.2.6.2 tls #include "defs.h" 44 1.2.6.2 tls #include "md.h" 45 1.2.6.2 tls #include "msg_defs.h" 46 1.2.6.2 tls #include "menu_defs.h" 47 1.2.6.2 tls 48 1.2.6.2 tls /* 49 1.2.6.2 tls * ARC BIOS reognizes only FAT, so we have to have a FAT partition 50 1.2.6.2 tls * to store our native bootloader. 51 1.2.6.2 tls */ 52 1.2.6.2 tls static int nobootfs = 0; 53 1.2.6.2 tls static int bootpart_fat12 = PART_BOOT_FAT12; 54 1.2.6.2 tls 55 1.2.6.2 tls void 56 1.2.6.2 tls md_init(void) 57 1.2.6.2 tls { 58 1.2.6.2 tls } 59 1.2.6.2 tls 60 1.2.6.2 tls void 61 1.2.6.2 tls md_init_set_status(int flags) 62 1.2.6.2 tls { 63 1.2.6.2 tls (void)flags; 64 1.2.6.2 tls } 65 1.2.6.2 tls 66 1.2.6.2 tls int 67 1.2.6.2 tls md_get_info(void) 68 1.2.6.2 tls { 69 1.2.6.2 tls return set_bios_geom_with_mbr_guess(); 70 1.2.6.2 tls } 71 1.2.6.2 tls 72 1.2.6.2 tls /* 73 1.2.6.2 tls * md back-end code for menu-driven BSD disklabel editor. 74 1.2.6.2 tls */ 75 1.2.6.2 tls int 76 1.2.6.2 tls md_make_bsd_partitions(void) 77 1.2.6.2 tls { 78 1.2.6.2 tls int i; 79 1.2.6.2 tls int part; 80 1.2.6.2 tls int maxpart = getmaxpartitions(); 81 1.2.6.2 tls int partstart; 82 1.2.6.2 tls int part_raw, part_bsd; 83 1.2.6.2 tls int ptend; 84 1.2.6.2 tls int no_swap = 0; 85 1.2.6.2 tls partinfo *p; 86 1.2.6.2 tls 87 1.2.6.2 tls /* 88 1.2.6.2 tls * Initialize global variables that track space used on this disk. 89 1.2.6.2 tls * Standard 4.4BSD 8-partition labels always cover whole disk. 90 1.2.6.2 tls */ 91 1.2.6.2 tls if (pm->ptsize == 0) 92 1.2.6.2 tls pm->ptsize = pm->dlsize - pm->ptstart; 93 1.2.6.2 tls if (pm->dlsize == 0) 94 1.2.6.2 tls pm->dlsize = pm->ptstart + pm->ptsize; 95 1.2.6.2 tls 96 1.2.6.2 tls partstart = pm->ptstart; 97 1.2.6.2 tls ptend = pm->ptstart + pm->ptsize; 98 1.2.6.2 tls 99 1.2.6.2 tls /* Ask for layout type -- standard or special */ 100 1.2.6.2 tls msg_display(MSG_layout, 101 1.2.6.2 tls pm->ptsize / (MEG / pm->sectorsize), 102 1.2.6.2 tls DEFROOTSIZE + DEFSWAPSIZE + DEFUSRSIZE, 103 1.2.6.2 tls DEFROOTSIZE + DEFSWAPSIZE + DEFUSRSIZE + XNEEDMB); 104 1.2.6.2 tls 105 1.2.6.2 tls process_menu(MENU_layout, NULL); 106 1.2.6.2 tls 107 1.2.6.2 tls /* Set so we use the 'real' geometry for rounding, input in MB */ 108 1.2.6.2 tls pm->current_cylsize = pm->dlcylsize; 109 1.2.6.2 tls set_sizemultname_meg(); 110 1.2.6.2 tls 111 1.2.6.2 tls /* Build standard partitions */ 112 1.2.6.2 tls memset(&pm->bsdlabel, 0, sizeof pm->bsdlabel); 113 1.2.6.2 tls 114 1.2.6.2 tls /* Set initial partition types to unused */ 115 1.2.6.2 tls for (part = 0 ; part < maxpart ; ++part) 116 1.2.6.2 tls pm->bsdlabel[part].pi_fstype = FS_UNUSED; 117 1.2.6.2 tls 118 1.2.6.2 tls /* Whole disk partition */ 119 1.2.6.2 tls part_raw = getrawpartition(); 120 1.2.6.2 tls if (part_raw == -1) 121 1.2.6.2 tls part_raw = PART_C; /* for sanity... */ 122 1.2.6.2 tls pm->bsdlabel[part_raw].pi_offset = 0; 123 1.2.6.2 tls pm->bsdlabel[part_raw].pi_size = pm->dlsize; 124 1.2.6.2 tls 125 1.2.6.2 tls if (part_raw == PART_D) { 126 1.2.6.2 tls /* Probably a system that expects an i386 style mbr */ 127 1.2.6.2 tls part_bsd = PART_C; 128 1.2.6.2 tls pm->bsdlabel[PART_C].pi_offset = pm->ptstart; 129 1.2.6.2 tls pm->bsdlabel[PART_C].pi_size = pm->ptsize; 130 1.2.6.2 tls } else { 131 1.2.6.2 tls part_bsd = part_raw; 132 1.2.6.2 tls } 133 1.2.6.2 tls 134 1.2.6.2 tls if (pm->bootsize != 0) { 135 1.2.6.2 tls pm->bsdlabel[PART_BOOT_FAT12].pi_fstype = FS_MSDOS; 136 1.2.6.2 tls pm->bsdlabel[PART_BOOT_FAT12].pi_size = pm->bootsize; 137 1.2.6.2 tls pm->bsdlabel[PART_BOOT_FAT12].pi_offset = pm->bootstart; 138 1.2.6.2 tls pm->bsdlabel[PART_BOOT_FAT12].pi_flags |= PART_BOOT_FAT12_PI_FLAGS; 139 1.2.6.2 tls strlcpy(pm->bsdlabel[PART_BOOT_FAT12].pi_mount, 140 1.2.6.2 tls PART_BOOT_FAT12_PI_MOUNT, 141 1.2.6.2 tls sizeof pm->bsdlabel[PART_BOOT_FAT12].pi_mount); 142 1.2.6.2 tls } 143 1.2.6.2 tls 144 1.2.6.2 tls #ifdef PART_REST 145 1.2.6.2 tls pm->bsdlabel[PART_REST].pi_offset = 0; 146 1.2.6.2 tls pm->bsdlabel[PART_REST].pi_size = pm->ptstart; 147 1.2.6.2 tls #endif 148 1.2.6.2 tls 149 1.2.6.2 tls /* 150 1.2.6.2 tls * Save any partitions that are outside the area we are 151 1.2.6.2 tls * going to use. 152 1.2.6.2 tls * In particular this saves details of the other MBR 153 1.2.6.2 tls * partitions on a multiboot i386 system. 154 1.2.6.2 tls */ 155 1.2.6.2 tls for (i = maxpart; i--;) { 156 1.2.6.2 tls if (pm->bsdlabel[i].pi_size != 0) 157 1.2.6.2 tls /* Don't overwrite special partitions */ 158 1.2.6.2 tls continue; 159 1.2.6.2 tls p = &pm->oldlabel[i]; 160 1.2.6.2 tls if (p->pi_fstype == FS_UNUSED || p->pi_size == 0) 161 1.2.6.2 tls continue; 162 1.2.6.2 tls if (layoutkind == LY_USEEXIST) { 163 1.2.6.2 tls if (PI_ISBSDFS(p)) 164 1.2.6.2 tls p->pi_flags |= PIF_MOUNT; 165 1.2.6.2 tls } else { 166 1.2.6.2 tls if (p->pi_offset < pm->ptstart + pm->ptsize && 167 1.2.6.2 tls p->pi_offset + p->pi_size > pm->ptstart) 168 1.2.6.2 tls /* Not outside area we are allocating */ 169 1.2.6.2 tls continue; 170 1.2.6.2 tls if (p->pi_fstype == FS_SWAP) 171 1.2.6.2 tls no_swap = 1; 172 1.2.6.2 tls } 173 1.2.6.2 tls pm->bsdlabel[i] = pm->oldlabel[i]; 174 1.2.6.2 tls } 175 1.2.6.2 tls 176 1.2.6.2 tls if (layoutkind == LY_USEEXIST) { 177 1.2.6.2 tls /* XXX Check we have a sensible layout */ 178 1.2.6.2 tls ; 179 1.2.6.2 tls } else 180 1.2.6.2 tls get_ptn_sizes(partstart, ptend - partstart, no_swap); 181 1.2.6.2 tls 182 1.2.6.2 tls /* 183 1.2.6.2 tls * OK, we have a partition table. Give the user the chance to 184 1.2.6.2 tls * edit it and verify it's OK, or abort altogether. 185 1.2.6.2 tls */ 186 1.2.6.2 tls edit_check: 187 1.2.6.2 tls if (edit_and_check_label(pm->bsdlabel, maxpart, part_raw, part_bsd) == 0) { 188 1.2.6.2 tls msg_display(MSG_abort); 189 1.2.6.2 tls return 0; 190 1.2.6.2 tls } 191 1.2.6.2 tls if (md_check_partitions() == 0) 192 1.2.6.2 tls goto edit_check; 193 1.2.6.2 tls 194 1.2.6.2 tls /* Disk name */ 195 1.2.6.2 tls msg_prompt(MSG_packname, pm->bsddiskname, pm->bsddiskname, sizeof pm->bsddiskname); 196 1.2.6.2 tls 197 1.2.6.2 tls /* save label to disk for MI code to update. */ 198 1.2.6.2 tls (void)savenewlabel(pm->bsdlabel, maxpart); 199 1.2.6.2 tls 200 1.2.6.2 tls /* Everything looks OK. */ 201 1.2.6.2 tls return 1; 202 1.2.6.2 tls } 203 1.2.6.2 tls 204 1.2.6.2 tls /* 205 1.2.6.2 tls * any additional partition validation 206 1.2.6.2 tls */ 207 1.2.6.2 tls int 208 1.2.6.2 tls md_check_partitions(void) 209 1.2.6.2 tls { 210 1.2.6.2 tls int part; 211 1.2.6.2 tls 212 1.2.6.2 tls /* we need to find a boot partition, otherwise we can't write our 213 1.2.6.2 tls * bootloader. We make the assumption that the user hasn't done 214 1.2.6.2 tls * something stupid, like move it away from the MBR partition. 215 1.2.6.2 tls */ 216 1.2.6.2 tls for (part = PART_A; part < MAXPARTITIONS; part++) 217 1.2.6.2 tls if (pm->bsdlabel[part].pi_fstype == FS_MSDOS) { 218 1.2.6.2 tls bootpart_fat12 = part; 219 1.2.6.2 tls return 1; 220 1.2.6.2 tls } 221 1.2.6.2 tls 222 1.2.6.2 tls msg_display(MSG_nobootpartdisklabel); 223 1.2.6.2 tls process_menu(MENU_ok, NULL); 224 1.2.6.2 tls return 0; 225 1.2.6.2 tls } 226 1.2.6.2 tls 227 1.2.6.2 tls /* 228 1.2.6.2 tls * hook called before writing new disklabel. 229 1.2.6.2 tls */ 230 1.2.6.2 tls int 231 1.2.6.2 tls md_pre_disklabel(void) 232 1.2.6.2 tls { 233 1.2.6.2 tls msg_display(MSG_dofdisk); 234 1.2.6.2 tls 235 1.2.6.2 tls /* write edited MBR onto disk. */ 236 1.2.6.2 tls if (write_mbr(pm->diskdev, &mbr, 1) != 0) { 237 1.2.6.2 tls msg_display(MSG_wmbrfail); 238 1.2.6.2 tls process_menu(MENU_ok, NULL); 239 1.2.6.2 tls return 1; 240 1.2.6.2 tls } 241 1.2.6.2 tls return 0; 242 1.2.6.2 tls } 243 1.2.6.2 tls 244 1.2.6.2 tls /* 245 1.2.6.2 tls * hook called after writing disklabel to new target disk. 246 1.2.6.2 tls */ 247 1.2.6.2 tls int 248 1.2.6.2 tls md_post_disklabel(void) 249 1.2.6.2 tls { 250 1.2.6.2 tls if (get_ramsize() <= 32) 251 1.2.6.2 tls set_swap(pm->diskdev, pm->bsdlabel); 252 1.2.6.2 tls return 0; 253 1.2.6.2 tls } 254 1.2.6.2 tls 255 1.2.6.2 tls /* 256 1.2.6.2 tls * hook called after upgrade() or install() has finished setting 257 1.2.6.2 tls * up the target disk but immediately before the user is given the 258 1.2.6.2 tls * ``disks are now set up'' message. 259 1.2.6.2 tls */ 260 1.2.6.2 tls int 261 1.2.6.2 tls md_post_newfs(void) 262 1.2.6.2 tls { 263 1.2.6.2 tls if (!nobootfs) { 264 1.2.6.2 tls msg_display(msg_string(MSG_copybootloader), pm->diskdev); 265 1.2.6.2 tls cp_to_target("/usr/mdec/boot", PART_BOOT_FAT12_PI_MOUNT); 266 1.2.6.2 tls } 267 1.2.6.2 tls 268 1.2.6.2 tls return 0; 269 1.2.6.2 tls } 270 1.2.6.2 tls 271 1.2.6.2 tls int 272 1.2.6.2 tls md_post_extract(void) 273 1.2.6.2 tls { 274 1.2.6.2 tls return 0; 275 1.2.6.2 tls } 276 1.2.6.2 tls 277 1.2.6.2 tls void 278 1.2.6.2 tls md_cleanup_install(void) 279 1.2.6.2 tls { 280 1.2.6.2 tls #ifndef DEBUG 281 1.2.6.2 tls enable_rc_conf(); 282 1.2.6.2 tls #endif 283 1.2.6.2 tls msg_display(MSG_howtoboot); 284 1.2.6.2 tls process_menu(MENU_ok, NULL); 285 1.2.6.2 tls } 286 1.2.6.2 tls 287 1.2.6.2 tls int 288 1.2.6.2 tls md_pre_update(void) 289 1.2.6.2 tls { 290 1.2.6.2 tls struct mbr_partition *part; 291 1.2.6.2 tls mbr_info_t *ext; 292 1.2.6.2 tls int i; 293 1.2.6.2 tls 294 1.2.6.2 tls if (get_ramsize() <= 32) 295 1.2.6.2 tls set_swap(pm->diskdev, NULL); 296 1.2.6.2 tls 297 1.2.6.2 tls read_mbr(pm->diskdev, &mbr); 298 1.2.6.2 tls /* do a sanity check of the partition table */ 299 1.2.6.2 tls for (ext = &mbr; ext; ext = ext->extended) { 300 1.2.6.2 tls part = ext->mbr.mbr_parts; 301 1.2.6.2 tls for (i = 0; i < MBR_PART_COUNT; part++, i++) { 302 1.2.6.2 tls if (part->mbrp_type != MBR_PTYPE_FAT12) 303 1.2.6.2 tls continue; 304 1.2.6.2 tls if (part->mbrp_size < (MIN_FAT12_BOOT / 512)) { 305 1.2.6.2 tls msg_display(MSG_boottoosmall); 306 1.2.6.2 tls msg_display_add(MSG_nobootpart, 0); 307 1.2.6.2 tls process_menu(MENU_yesno, NULL); 308 1.2.6.2 tls if (!yesno) 309 1.2.6.2 tls return 0; 310 1.2.6.2 tls nobootfs = 1; 311 1.2.6.2 tls } 312 1.2.6.2 tls } 313 1.2.6.2 tls } 314 1.2.6.2 tls if (md_check_partitions() == 0) 315 1.2.6.2 tls nobootfs = 1; 316 1.2.6.2 tls return 1; 317 1.2.6.2 tls } 318 1.2.6.2 tls 319 1.2.6.2 tls /* Upgrade support */ 320 1.2.6.2 tls int 321 1.2.6.2 tls md_update(void) 322 1.2.6.2 tls { 323 1.2.6.2 tls md_post_newfs(); 324 1.2.6.2 tls return 1; 325 1.2.6.2 tls } 326 1.2.6.2 tls 327 1.2.6.2 tls int 328 1.2.6.2 tls md_check_mbr(mbr_info_t *mbri) 329 1.2.6.2 tls { 330 1.2.6.2 tls mbr_info_t *ext; 331 1.2.6.2 tls struct mbr_partition *part; 332 1.2.6.2 tls int i; 333 1.2.6.2 tls 334 1.2.6.2 tls for (ext = mbri; ext; ext = ext->extended) { 335 1.2.6.2 tls part = ext->mbr.mbr_parts; 336 1.2.6.2 tls for (i = 0; i < MBR_PART_COUNT; part++, i++) { 337 1.2.6.2 tls if (part->mbrp_type == MBR_PTYPE_FAT12) { 338 1.2.6.2 tls pm->bootstart = part->mbrp_start; 339 1.2.6.2 tls pm->bootsize = part->mbrp_size; 340 1.2.6.2 tls break; 341 1.2.6.2 tls } 342 1.2.6.2 tls } 343 1.2.6.2 tls } 344 1.2.6.2 tls if (pm->bootsize < (MIN_FAT12_BOOT / 512)) { 345 1.2.6.2 tls msg_display(MSG_boottoosmall); 346 1.2.6.2 tls msg_display_add(MSG_reeditpart, 0); 347 1.2.6.2 tls process_menu(MENU_yesno, NULL); 348 1.2.6.2 tls if (!yesno) 349 1.2.6.2 tls return 0; 350 1.2.6.2 tls return 1; 351 1.2.6.2 tls } 352 1.2.6.2 tls if (pm->bootstart == 0 || pm->bootsize == 0) { 353 1.2.6.2 tls msg_display(MSG_nobootpart); 354 1.2.6.2 tls msg_display_add(MSG_reeditpart, 0); 355 1.2.6.2 tls process_menu(MENU_yesno, NULL); 356 1.2.6.2 tls if (!yesno) 357 1.2.6.2 tls return 0; 358 1.2.6.2 tls return 1; 359 1.2.6.2 tls } 360 1.2.6.2 tls return 2; 361 1.2.6.2 tls } 362 1.2.6.2 tls 363 1.2.6.2 tls int 364 1.2.6.2 tls md_mbr_use_wholedisk(mbr_info_t *mbri) 365 1.2.6.2 tls { 366 1.2.6.2 tls struct mbr_sector *mbrs = &mbri->mbr; 367 1.2.6.2 tls mbr_info_t *ext; 368 1.2.6.2 tls struct mbr_partition *part; 369 1.2.6.2 tls 370 1.2.6.2 tls part = &mbrs->mbr_parts[0]; 371 1.2.6.2 tls /* Set the partition information for full disk usage. */ 372 1.2.6.2 tls while ((ext = mbri->extended)) { 373 1.2.6.2 tls mbri->extended = ext->extended; 374 1.2.6.2 tls free(ext); 375 1.2.6.2 tls } 376 1.2.6.2 tls memset(part, 0, MBR_PART_COUNT * sizeof *part); 377 1.2.6.2 tls #ifdef BOOTSEL 378 1.2.6.2 tls memset(&mbri->mbrb, 0, sizeof mbri->mbrb); 379 1.2.6.2 tls #endif 380 1.2.6.2 tls part[0].mbrp_type = MBR_PTYPE_FAT12; 381 1.2.6.2 tls part[0].mbrp_size = FAT12_BOOT_SIZE / 512; 382 1.2.6.2 tls part[0].mbrp_start = bsec; 383 1.2.6.2 tls part[0].mbrp_flag = MBR_PFLAG_ACTIVE; 384 1.2.6.2 tls 385 1.2.6.2 tls part[1].mbrp_type = MBR_PTYPE_NETBSD; 386 1.2.6.2 tls part[1].mbrp_size = pm->dlsize - (bsec + FAT12_BOOT_SIZE / 512); 387 1.2.6.2 tls part[1].mbrp_start = bsec + FAT12_BOOT_SIZE / 512; 388 1.2.6.2 tls part[1].mbrp_flag = 0; 389 1.2.6.2 tls 390 1.2.6.2 tls pm->ptstart = part[1].mbrp_start; 391 1.2.6.2 tls pm->ptsize = part[1].mbrp_size; 392 1.2.6.2 tls pm->bootstart = part[0].mbrp_start; 393 1.2.6.2 tls pm->bootsize = part[0].mbrp_size; 394 1.2.6.2 tls return 1; 395 1.2.6.2 tls } 396 1.2.6.2 tls 397 1.2.6.2 tls int 398 1.2.6.2 tls md_pre_mount() 399 1.2.6.2 tls { 400 1.2.6.2 tls return 0; 401 1.2.6.2 tls } 402
Indexes created Thu Oct 02 14:10:14 GMT 2025