1 /* $NetBSD: md.c,v 1.9 2019/08/14 12:55:35 martin Exp $ */ 2 3 /* 4 * Copyright 1997 Piermont Information Systems Inc. 5 * All rights reserved. 6 * 7 * Based on code written by Philip A. Nelson for Piermont Information 8 * Systems Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of Piermont Information Systems Inc. may not be used to endorse 19 * or promote products derived from this software without specific prior 20 * written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS'' 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* md.c -- arc machine specific routines */ 36 37 #include <sys/param.h> 38 #include <sys/sysctl.h> 39 #include <stdio.h> 40 #include <util.h> 41 #include <machine/cpu.h> 42 43 #include "defs.h" 44 #include "md.h" 45 #include "msg_defs.h" 46 #include "menu_defs.h" 47 48 /* 49 * ARC BIOS reognizes only FAT, so we have to have a FAT partition 50 * to store our native bootloader. 51 */ 52 static int nobootfs = 0; 53 54 void 55 md_init(void) 56 { 57 } 58 59 void 60 md_init_set_status(int flags) 61 { 62 (void)flags; 63 } 64 65 bool 66 md_get_info(struct install_partition_desc *install) 67 { 68 69 if (pm->no_mbr || pm->no_part) 70 return true; 71 72 if (pm->parts == NULL) { 73 74 const struct disk_partitioning_scheme *ps = 75 select_part_scheme(pm, NULL, true, NULL); 76 77 if (!ps) 78 return false; 79 80 struct disk_partitions *parts = 81 (*ps->create_new_for_disk)(pm->diskdev, 82 0, pm->dlsize, pm->dlsize, true); 83 if (!parts) 84 return false; 85 86 pm->parts = parts; 87 if (ps->size_limit > 0 && pm->dlsize > ps->size_limit) 88 pm->dlsize = ps->size_limit; 89 } 90 91 return set_bios_geom_with_mbr_guess(pm->parts); 92 } 93 94 /* 95 * md back-end code for menu-driven BSD disklabel editor. 96 */ 97 bool 98 md_make_bsd_partitions(struct install_partition_desc *install) 99 { 100 101 return make_bsd_partitions(install); 102 } 103 104 /* 105 * any additional partition validation 106 */ 107 bool 108 md_check_partitions(struct install_partition_desc *install) 109 { 110 size_t i; 111 112 /* 113 * We need to find a boot partition, otherwise we can't write our 114 * bootloader. We make the assumption that the user hasn't done 115 * something stupid, like move it away from the MBR partition. 116 */ 117 for (i = 0; i < install->num; i++) { 118 if (install->infos[i].fs_type == FS_MSDOS) 119 return true; 120 } 121 122 msg_display(MSG_nobootpartdisklabel); 123 process_menu(MENU_ok, NULL); 124 return false; 125 } 126 127 /* 128 * hook called before writing new disklabel. 129 */ 130 bool 131 md_pre_disklabel(struct install_partition_desc *install, 132 struct disk_partitions *parts) 133 { 134 135 if (parts->parent == NULL) 136 return true; /* no outer partitions */ 137 138 parts = parts->parent; 139 140 msg_display_subst(MSG_dofdisk, 3, parts->disk, 141 msg_string(parts->pscheme->name), 142 msg_string(parts->pscheme->short_name)); 143 144 /* write edited "MBR" onto disk. */ 145 if (!parts->pscheme->write_to_disk(parts)) { 146 msg_display(MSG_wmbrfail); 147 process_menu(MENU_ok, NULL); 148 return false; 149 } 150 return true; 151 } 152 153 /* 154 * hook called after writing disklabel to new target disk. 155 */ 156 bool 157 md_post_disklabel(struct install_partition_desc *install, 158 struct disk_partitions *parts) 159 { 160 return true; 161 } 162 163 /* 164 * hook called after upgrade() or install() has finished setting 165 * up the target disk but immediately before the user is given the 166 * ``disks are now set up'' message. 167 */ 168 int 169 md_post_newfs(struct install_partition_desc *install) 170 { 171 if (!nobootfs) { 172 msg_fmt_display(msg_string(MSG_copybootloader), "%s", 173 pm->diskdev); 174 cp_to_target("/usr/mdec/boot", PART_BOOT_MOUNT); 175 } 176 177 return 0; 178 } 179 180 int 181 md_post_extract(struct install_partition_desc *install) 182 { 183 return 0; 184 } 185 186 void 187 md_cleanup_install(struct install_partition_desc *install) 188 { 189 #ifndef DEBUG 190 enable_rc_conf(); 191 #endif 192 msg_display(MSG_howtoboot); 193 process_menu(MENU_ok, NULL); 194 } 195 196 int 197 md_pre_update(struct install_partition_desc *install) 198 { 199 size_t i; 200 201 /* 202 * Verify the msdos partition exists and is big enough. 203 */ 204 for (i = 0; i < install->num; i++) { 205 if (install->infos[i].fs_type != PART_BOOT_TYPE) 206 continue; 207 if (install->infos[i].size/512 >= PART_BOOT_MIN) 208 break; 209 msg_display(MSG_boottoosmall); 210 msg_fmt_display_add(MSG_nobootpart, "%d", 0); 211 if (!ask_yesno(NULL)) 212 return false; 213 nobootfs = 1; 214 break; 215 } 216 217 if (md_check_partitions(install) == 0) 218 nobootfs = 1; 219 220 return 1; 221 } 222 223 /* Upgrade support */ 224 int 225 md_update(struct install_partition_desc *install) 226 { 227 md_post_newfs(install); 228 return 1; 229 } 230 231 int 232 md_check_mbr(struct disk_partitions *parts, mbr_info_t *mbri, bool quiet) 233 { 234 mbr_info_t *ext; 235 struct mbr_partition *part; 236 int i; 237 238 for (ext = mbri; ext; ext = ext->extended) { 239 part = ext->mbr.mbr_parts; 240 for (i = 0; i < MBR_PART_COUNT; part++, i++) { 241 if (part->mbrp_type == MBR_PTYPE_FAT12) { 242 pm->bootstart = part->mbrp_start; 243 pm->bootsize = part->mbrp_size; 244 break; 245 } 246 } 247 } 248 if (pm->bootsize < (PART_BOOT_MIN / 512)) { 249 if (quiet) 250 return 0; 251 msg_display(MSG_boottoosmall); 252 return ask_reedit(parts); 253 } 254 if (pm->bootstart == 0 || pm->bootsize == 0) { 255 if (quiet) 256 return 0; 257 msg_display(MSG_nobootpart); 258 return ask_reedit(parts); 259 } 260 return 2; 261 } 262 263 bool 264 md_parts_use_wholedisk(struct disk_partitions *parts) 265 { 266 struct disk_part_info boot_part = { 267 .size = PART_BOOT / 512, 268 .fs_type = PART_BOOT_TYPE, 269 .fs_sub_type = MBR_PTYPE_FAT12, 270 .last_mounted = PART_BOOT_MOUNT, 271 }; 272 273 boot_part.nat_type = parts->pscheme->get_fs_part_type( 274 boot_part.fs_type, boot_part.fs_sub_type); 275 276 return parts_use_wholedisk(parts, 1, &boot_part); 277 } 278 279 int 280 md_pre_mount(struct install_partition_desc *install, size_t ndx) 281 { 282 return 0; 283 } 284 285 bool 286 md_mbr_update_check(struct disk_partitions *parts, mbr_info_t *mbri) 287 { 288 return false; /* no change, no need to write back */ 289 } 290 291 #ifdef HAVE_GPT 292 bool 293 md_gpt_post_write(struct disk_partitions *parts, part_id root_id, 294 bool root_is_new, part_id efi_id, bool efi_is_new) 295 { 296 /* no GPT boot support, nothing needs to be done here */ 297 return true; 298 } 299 #endif 300