| 1 | /*␊ |
| 2 | * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * Portions Copyright (c) 1999-2003 Apple Computer, Inc. All Rights␊ |
| 7 | * Reserved. This file contains Original Code and/or Modifications of␊ |
| 8 | * Original Code as defined in and that are subject to the Apple Public␊ |
| 9 | * Source License Version 2.0 (the "License"). You may not use this file␊ |
| 10 | * except in compliance with the License. Please obtain a copy of the␊ |
| 11 | * License at http://www.apple.com/publicsource and read it before using␊ |
| 12 | * this file.␊ |
| 13 | * ␊ |
| 14 | * The Original Code and all software distributed under the License are␊ |
| 15 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 16 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 17 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the␊ |
| 19 | * License for the specific language governing rights and limitations␊ |
| 20 | * under the License.␊ |
| 21 | * ␊ |
| 22 | * @APPLE_LICENSE_HEADER_END@␊ |
| 23 | */␊ |
| 24 | /* ␊ |
| 25 | * Mach Operating System␊ |
| 26 | * Copyright (c) 1990 Carnegie-Mellon University␊ |
| 27 | * Copyright (c) 1989 Carnegie-Mellon University␊ |
| 28 | * All rights reserved. The CMU software License Agreement specifies␊ |
| 29 | * the terms and conditions for use and redistribution.␊ |
| 30 | */␊ |
| 31 | ␊ |
| 32 | /*␊ |
| 33 | * INTEL CORPORATION PROPRIETARY INFORMATION␊ |
| 34 | *␊ |
| 35 | * This software is supplied under the terms of a license agreement or ␊ |
| 36 | * nondisclosure agreement with Intel Corporation and may not be copied ␊ |
| 37 | * nor disclosed except in accordance with the terms of that agreement.␊ |
| 38 | *␊ |
| 39 | * Copyright 1988, 1989 by Intel Corporation␊ |
| 40 | */␊ |
| 41 | ␊ |
| 42 | /*␊ |
| 43 | * Copyright 1993 NeXT Computer, Inc.␊ |
| 44 | * All rights reserved.␊ |
| 45 | */␊ |
| 46 | ␊ |
| 47 | /*␊ |
| 48 | * Completely reworked by Sam Streeper (sam_s@NeXT.com)␊ |
| 49 | * Reworked again by Curtis Galloway (galloway@NeXT.com)␊ |
| 50 | */␊ |
| 51 | ␊ |
| 52 | ␊ |
| 53 | #include "boot.h"␊ |
| 54 | #include "bootstruct.h"␊ |
| 55 | #include "fake_efi.h"␊ |
| 56 | #include "sl.h"␊ |
| 57 | #include "libsa.h"␊ |
| 58 | #include "ramdisk.h"␊ |
| 59 | #include "gui.h"␊ |
| 60 | #include "platform.h"␊ |
| 61 | ␊ |
| 62 | long gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
| 63 | bool gOverrideKernel;␊ |
| 64 | static char gBootKernelCacheFile[512];␊ |
| 65 | static char gCacheNameAdler[64 + 256];␊ |
| 66 | //char *gPlatformName = gCacheNameAdler; disabled␊ |
| 67 | char gRootDevice[512];␊ |
| 68 | char gMKextName[512];␊ |
| 69 | bool gEnableCDROMRescan;␊ |
| 70 | bool gScanSingleDrive;␊ |
| 71 | ␊ |
| 72 | int bvCount = 0;␊ |
| 73 | //int␉␉menucount = 0;␊ |
| 74 | int gDeviceCount = 0; ␊ |
| 75 | ␊ |
| 76 | BVRef bvr;␊ |
| 77 | BVRef menuBVR;␊ |
| 78 | BVRef bvChain;␊ |
| 79 | bool useGUI;␊ |
| 80 | ␊ |
| 81 | //static void selectBiosDevice(void);␊ |
| 82 | static unsigned long Adler32(unsigned char *buffer, long length);␊ |
| 83 | ␊ |
| 84 | ␊ |
| 85 | static bool gUnloadPXEOnExit = false;␊ |
| 86 | ␊ |
| 87 | /*␊ |
| 88 | * How long to wait (in seconds) to load the␊ |
| 89 | * kernel after displaying the "boot:" prompt.␊ |
| 90 | */␊ |
| 91 | #define kBootErrorTimeout 5␊ |
| 92 | ␊ |
| 93 | /*␊ |
| 94 | * Default path to kernel cache file␊ |
| 95 | */␊ |
| 96 | #define kDefaultCachePath "/System/Library/Caches/com.apple.kernelcaches/kernelcache"␊ |
| 97 | ␊ |
| 98 | //==========================================================================␊ |
| 99 | // Zero the BSS.␊ |
| 100 | ␊ |
| 101 | static void zeroBSS(void)␊ |
| 102 | {␊ |
| 103 | ␉extern char _DATA__bss__begin, _DATA__bss__end;␊ |
| 104 | ␉extern char _DATA__common__begin, _DATA__common__end;␊ |
| 105 | ␊ |
| 106 | ␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊ |
| 107 | ␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊ |
| 108 | }␊ |
| 109 | ␊ |
| 110 | //==========================================================================␊ |
| 111 | // Malloc error function␊ |
| 112 | ␊ |
| 113 | static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
| 114 | {␊ |
| 115 | ␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊ |
| 116 | }␊ |
| 117 | ␊ |
| 118 | //==========================================================================␊ |
| 119 | //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
| 120 | //␊ |
| 121 | void initialize_runtime(void)␊ |
| 122 | {␊ |
| 123 | ␉zeroBSS();␊ |
| 124 | ␉malloc_init(0, 0, 0, malloc_error);␊ |
| 125 | }␊ |
| 126 | ␊ |
| 127 | //==========================================================================␊ |
| 128 | // execKernel - Load the kernel image (mach-o) and jump to its entry point.␊ |
| 129 | ␊ |
| 130 | static int ExecKernel(void *binary)␊ |
| 131 | {␊ |
| 132 | entry_t kernelEntry;␊ |
| 133 | int ret;␊ |
| 134 | ␊ |
| 135 | bootArgs->kaddr = bootArgs->ksize = 0;␊ |
| 136 | ␊ |
| 137 | ret = DecodeKernel(binary,␊ |
| 138 | &kernelEntry,␊ |
| 139 | (char **) &bootArgs->kaddr,␊ |
| 140 | (int *)&bootArgs->ksize );␊ |
| 141 | ␊ |
| 142 | if ( ret != 0 )␊ |
| 143 | return ret;␊ |
| 144 | ␊ |
| 145 | // Reserve space for boot args␊ |
| 146 | reserveKernBootStruct();␊ |
| 147 | ␊ |
| 148 | // Load boot drivers from the specifed root path.␊ |
| 149 | ␊ |
| 150 | if (!gHaveKernelCache) {␊ |
| 151 | LoadDrivers("/");␊ |
| 152 | }␊ |
| 153 | ␊ |
| 154 | clearActivityIndicator();␊ |
| 155 | ␊ |
| 156 | if (gErrors) {␊ |
| 157 | printf("Errors encountered while starting up the computer.\n");␊ |
| 158 | printf("Pausing %d seconds...\n", kBootErrorTimeout);␊ |
| 159 | sleep(kBootErrorTimeout);␊ |
| 160 | }␊ |
| 161 | ␊ |
| 162 | setupFakeEfi();␊ |
| 163 | ␊ |
| 164 | md0Ramdisk();␊ |
| 165 | ␊ |
| 166 | verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊ |
| 167 | ␊ |
| 168 | // Cleanup the PXE base code.␊ |
| 169 | ␊ |
| 170 | if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊ |
| 171 | ␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊ |
| 172 | {␊ |
| 173 | ␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊ |
| 174 | sleep(2);␊ |
| 175 | }␊ |
| 176 | }␊ |
| 177 | ␊ |
| 178 | bool dummyVal;␊ |
| 179 | ␊ |
| 180 | ␉//Azi: Wait=y is breaking other keys when typed "after them" at boot prompt.␊ |
| 181 | ␉// Works properly if typed in first place or used on Boot.plist.␊ |
| 182 | ␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal) {␊ |
| 183 | ␉␉pause();␊ |
| 184 | ␉}␊ |
| 185 | ␊ |
| 186 | ␉usb_loop();␊ |
| 187 | ␊ |
| 188 | // If we were in text mode, switch to graphics mode.␊ |
| 189 | // This will draw the boot graphics unless we are in␊ |
| 190 | // verbose mode.␊ |
| 191 | ␊ |
| 192 | if(gVerboseMode)␊ |
| 193 | setVideoMode( GRAPHICS_MODE, 0 );␊ |
| 194 | else␊ |
| 195 | drawBootGraphics();␊ |
| 196 | ␉␊ |
| 197 | finalizeBootStruct();␊ |
| 198 | ␊ |
| 199 | // Jump to kernel's entry point. There's no going back now.␊ |
| 200 | ␊ |
| 201 | startprog( kernelEntry, bootArgs );␊ |
| 202 | ␊ |
| 203 | // Not reached␊ |
| 204 | ␊ |
| 205 | return 0;␊ |
| 206 | }␊ |
| 207 | ␊ |
| 208 | //==========================================================================␊ |
| 209 | // This is the entrypoint from real-mode which functions exactly as it did␊ |
| 210 | // before. Multiboot does its own runtime initialization, does some of its␊ |
| 211 | // own things, and then calls common_boot.␊ |
| 212 | void boot(int biosdev)␊ |
| 213 | {␊ |
| 214 | ␉initialize_runtime();␊ |
| 215 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
| 216 | ␉enableA20();␊ |
| 217 | ␉common_boot(biosdev);␊ |
| 218 | }␊ |
| 219 | ␊ |
| 220 | //==========================================================================␊ |
| 221 | // The 'main' function for the booter. Called by boot0 when booting␊ |
| 222 | // from a block device, or by the network booter.␊ |
| 223 | //␊ |
| 224 | // arguments:␊ |
| 225 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
| 226 | // that the booter was loaded from.␊ |
| 227 | //␊ |
| 228 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
| 229 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
| 230 | // next boot device on its list.␊ |
| 231 | void common_boot(int biosdev)␊ |
| 232 | {␊ |
| 233 | int status;␊ |
| 234 | char *bootFile;␊ |
| 235 | unsigned long adler32;␊ |
| 236 | bool quiet;␊ |
| 237 | bool firstRun = true;␊ |
| 238 | bool instantMenu;␊ |
| 239 | bool rescanPrompt;␊ |
| 240 | unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊ |
| 241 | unsigned int denyBVFlags = kBVFlagEFISystem;␊ |
| 242 | ␊ |
| 243 | // Set reminder to unload the PXE base code. Neglect to unload␊ |
| 244 | // the base code will result in a hang or kernel panic.␊ |
| 245 | gUnloadPXEOnExit = true;␊ |
| 246 | ␊ |
| 247 | // Record the device that the booter was loaded from.␊ |
| 248 | gBIOSDev = biosdev & kBIOSDevMask;␊ |
| 249 | ␊ |
| 250 | // Initialize boot info structure.␊ |
| 251 | initKernBootStruct();␊ |
| 252 | ␊ |
| 253 | // Setup VGA text mode.␊ |
| 254 | // Not sure if it is safe to call setVideoMode() before the␊ |
| 255 | // config table has been loaded. Call video_mode() instead.␊ |
| 256 | #if DEBUG␊ |
| 257 | printf("before video_mode\n");␊ |
| 258 | #endif␊ |
| 259 | video_mode( 2 ); // 80x25 mono text mode.␊ |
| 260 | #if DEBUG␊ |
| 261 | printf("after video_mode\n");␊ |
| 262 | #endif␊ |
| 263 | ␊ |
| 264 | // Scan and record the system's hardware information.␊ |
| 265 | scan_platform();␊ |
| 266 | ␊ |
| 267 | // First get info for boot volume.␊ |
| 268 | scanBootVolumes(gBIOSDev, 0);␊ |
| 269 | bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
| 270 | setBootGlobals(bvChain);␊ |
| 271 | ␊ |
| 272 | // Load boot.plist config file␊ |
| 273 | status = loadSystemConfig(&bootInfo->bootConfig);␊ |
| 274 | ␊ |
| 275 | if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊ |
| 276 | gBootMode |= kBootModeQuiet;␊ |
| 277 | }␊ |
| 278 | ␊ |
| 279 | // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
| 280 | if (getBoolForKey(kInstantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {␊ |
| 281 | firstRun = false;␊ |
| 282 | }␊ |
| 283 | ␊ |
| 284 | // Loading preboot ramdisk if exists.␊ |
| 285 | loadPrebootRAMDisk();␊ |
| 286 | ␊ |
| 287 | // Disable rescan option by default␊ |
| 288 | gEnableCDROMRescan = false;␊ |
| 289 | ␊ |
| 290 | // Enable it with Rescan=y in system config␊ |
| 291 | if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {␊ |
| 292 | gEnableCDROMRescan = true;␊ |
| 293 | }␊ |
| 294 | ␊ |
| 295 | // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
| 296 | rescanPrompt = false;␊ |
| 297 | if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊ |
| 298 | gEnableCDROMRescan = promptForRescanOption();␊ |
| 299 | }␊ |
| 300 | ␊ |
| 301 | // Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
| 302 | if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {␊ |
| 303 | gScanSingleDrive = true;␊ |
| 304 | }␊ |
| 305 | ␊ |
| 306 | // Create a list of partitions on device(s).␊ |
| 307 | if (gScanSingleDrive) {␊ |
| 308 | scanBootVolumes(gBIOSDev, &bvCount);␊ |
| 309 | } else {␊ |
| 310 | scanDisks(gBIOSDev, &bvCount);␊ |
| 311 | }␊ |
| 312 | ␊ |
| 313 | // Create a separated bvr chain using the specified filters.␊ |
| 314 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
| 315 | ␊ |
| 316 | gBootVolume = selectBootVolume(bvChain);␊ |
| 317 | ␊ |
| 318 | #if DEBUG␊ |
| 319 | printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
| 320 | printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
| 321 | getc();␊ |
| 322 | #endif␊ |
| 323 | ␊ |
| 324 | useGUI = true;␊ |
| 325 | // Override useGUI default␊ |
| 326 | getBoolForKey(kGUIKey, &useGUI, &bootInfo->bootConfig);␊ |
| 327 | if (useGUI && initGUI())␊ |
| 328 | ␉{␊ |
| 329 | ␉␉// initGUI() returned with an error, disabling GUI.␊ |
| 330 | ␉␉useGUI = false;␊ |
| 331 | ␉}␊ |
| 332 | ␊ |
| 333 | setBootGlobals(bvChain);␊ |
| 334 | ␊ |
| 335 | // Parse args, load and start kernel.␊ |
| 336 | while (1) {␊ |
| 337 | const char *val;␊ |
| 338 | int len;␊ |
| 339 | int trycache;␊ |
| 340 | long flags, cachetime, kerneltime, exttime, sleeptime, time;␊ |
| 341 | int ret = -1;␊ |
| 342 | void *binary = (void *)kLoadAddr;␊ |
| 343 | bool tryresume;␊ |
| 344 | bool tryresumedefault;␊ |
| 345 | bool forceresume;␊ |
| 346 | ␊ |
| 347 | config_file_t systemVersion;␉// system.plist of booting partition␊ |
| 348 | ␉␉char␉␉␉ osxVersion[8]; // replaces gMacOSVersion here, for now.␊ |
| 349 | ␊ |
| 350 | // additional variable for testing alternate kernel image locations on boot helper partitions.␊ |
| 351 | char bootFileSpec[512];␊ |
| 352 | ␉␉␊ |
| 353 | // Initialize globals.␊ |
| 354 | ␊ |
| 355 | sysConfigValid = false;␊ |
| 356 | gErrors = false;␊ |
| 357 | ␊ |
| 358 | status = getBootOptions(firstRun);␊ |
| 359 | firstRun = false;␊ |
| 360 | if (status == -1) continue;␊ |
| 361 | ␊ |
| 362 | ␉␉//Azi: doing this earlier to get the verbose from loadOverrideConfig.␊ |
| 363 | ␉␉// Draw background, turn off any GUI elements and update VRAM.␊ |
| 364 | ␉␉if ( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
| 365 | ␉␉{␉␊ |
| 366 | ␉␉␉drawBackground(); // order matters!!␊ |
| 367 | ␉␉␉gui.devicelist.draw = false; // Needed when the verbose "flips" the screen.␊ |
| 368 | ␉␉␉gui.bootprompt.draw = false; // ?␊ |
| 369 | ␉␉␉gui.menu.draw = false; // ?␊ |
| 370 | ␉␉␉gui.infobox.draw = false; // Enter doesn't work with this drawn; most probably it's not needed!?␊ |
| 371 | ␉␉␉updateVRAM();␊ |
| 372 | ␉␉}␊ |
| 373 | ␉␉ ␊ |
| 374 | status = processBootOptions();␊ |
| 375 | // Status==1 means to chainboot␊ |
| 376 | if ( status == 1 ) break;␊ |
| 377 | // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊ |
| 378 | if ( status == -1 )␊ |
| 379 | {␊ |
| 380 | // gBootVolume == NULL usually means the user hit escape.␊ |
| 381 | if(gBootVolume == NULL)␊ |
| 382 | {␊ |
| 383 | freeFilteredBVChain(bvChain);␊ |
| 384 | ␊ |
| 385 | if (gEnableCDROMRescan)␊ |
| 386 | rescanBIOSDevice(gBIOSDev);␊ |
| 387 | ␊ |
| 388 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
| 389 | setBootGlobals(bvChain);␊ |
| 390 | }␊ |
| 391 | continue;␊ |
| 392 | }␊ |
| 393 | ␉␉␊ |
| 394 | // Other status (e.g. 0) means that we should proceed with boot.␊ |
| 395 | // Found and loaded a config file. Proceed with boot.␊ |
| 396 | ␉␉␊ |
| 397 | ␉␉//Azi: still calling this here. The call on processBootOptions() gets hidden from verbose and␊ |
| 398 | ␉␉// for some reason gMacOSVersion doesn't get initialized on boot.c like on the others. Later...␊ |
| 399 | ␉␉// Find out which version mac os we're booting.␊ |
| 400 | ␉␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion)) {␊ |
| 401 | ␉␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion)) {␉␊ |
| 402 | ␉␉␉␉// getValueForKey uses const char for val␊ |
| 403 | ␉␉␉␉// so copy it and trim␊ |
| 404 | ␉␉␉␉strncpy(osxVersion, val, MIN(len, 4));␊ |
| 405 | ␉␉␉␉osxVersion[MIN(len, 4)] = '\0';␊ |
| 406 | ␉␉␉}␊ |
| 407 | ␉␉}␊ |
| 408 | ␊ |
| 409 | ␉␉// If cpu doesn't handle 64 bit instructions,...␊ |
| 410 | ␉␉if (!platformCPUFeature(CPU_FEATURE_EM64T) ||␊ |
| 411 | ␉␉␉// ... user forced i386 kernel architecture on cpu with "em64t"...␊ |
| 412 | ␉␉␉getValueForKey(kArchI386Flag, &val, &len, &bootInfo->bootConfig) ||␊ |
| 413 | ␉␉␉// ... or forced Legacy Mode...␊ |
| 414 | ␉␉␉getValueForKey(kLegacyModeFlag, &val, &len, &bootInfo->bootConfig))␊ |
| 415 | ␉␉{␊ |
| 416 | ␉␉␉// ... use i386 kernel arch.␊ |
| 417 | ␉␉␉archCpuType = CPU_TYPE_I386;␊ |
| 418 | ␉␉}␊ |
| 419 | ␉␉else␊ |
| 420 | ␉␉{␊ |
| 421 | ␉␉␉// Else use x86_64 kernel arch.␊ |
| 422 | ␉␉␉archCpuType = CPU_TYPE_X86_64;␊ |
| 423 | ␉␉}␊ |
| 424 | ␉␉// Override i386/-legacy, if flagged on Boot.plist.␊ |
| 425 | ␉␉if (getValueForKey(kArchX86_64Flag, &val, &len, &bootInfo->bootConfig))␊ |
| 426 | ␉␉{␊ |
| 427 | ␉␉␉archCpuType = CPU_TYPE_X86_64;␊ |
| 428 | ␉␉}␊ |
| 429 | ␉␉␊ |
| 430 | ␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->bootConfig)) {␊ |
| 431 | ␉␉␉tryresume = true;␊ |
| 432 | ␉␉␉tryresumedefault = true;␊ |
| 433 | ␉␉} else {␊ |
| 434 | ␉␉␉tryresumedefault = false;␊ |
| 435 | ␉␉}␊ |
| 436 | ␊ |
| 437 | ␉␉if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->bootConfig)) {␊ |
| 438 | ␉␉␉forceresume = false;␊ |
| 439 | ␉␉}␊ |
| 440 | ␉␉␊ |
| 441 | ␉␉if (forceresume) {␊ |
| 442 | ␉␉␉tryresume = true;␊ |
| 443 | ␉␉␉tryresumedefault = false;␊ |
| 444 | ␉␉}␊ |
| 445 | ␉␉␊ |
| 446 | ␉␉while (tryresume) {␊ |
| 447 | ␉␉␉const char *tmp;␊ |
| 448 | ␉␉␉BVRef bvr;␊ |
| 449 | ␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->bootConfig))␊ |
| 450 | ␉␉␉␉val="/private/var/vm/sleepimage";␊ |
| 451 | ␉␉␉␊ |
| 452 | ␉␉␉// Do this first to be sure that root volume is mounted␊ |
| 453 | ␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊ |
| 454 | ␊ |
| 455 | ␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊ |
| 456 | ␉␉␉␉break;␊ |
| 457 | ␉␉␉␊ |
| 458 | ␉␉␉// Can't check if it was hibernation Wake=y is required␊ |
| 459 | ␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊ |
| 460 | ␉␉␉␉break;␊ |
| 461 | ␉␉␉␊ |
| 462 | ␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
| 463 | ␉␉␉␉break;␊ |
| 464 | ␉␉␉␊ |
| 465 | ␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊ |
| 466 | ␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊ |
| 467 | ␉␉␉␉break;␊ |
| 468 | ␉␉␉}␊ |
| 469 | ␉␉␉␉␊ |
| 470 | ␉␉␉HibernateBoot((char *)val);␊ |
| 471 | ␉␉␉break;␊ |
| 472 | ␉␉}␊ |
| 473 | ␊ |
| 474 | // Reset cache name.␊ |
| 475 | bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊ |
| 476 | ␊ |
| 477 | sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊ |
| 478 | ␊ |
| 479 | adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊ |
| 480 | ␊ |
| 481 | if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {␊ |
| 482 | strlcpy(gBootKernelCacheFile, val, len+1);␊ |
| 483 | } else {␊ |
| 484 | sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePath, adler32);␊ |
| 485 | }␊ |
| 486 | ␊ |
| 487 | // Check for cache file.␊ |
| 488 | trycache = (((gBootMode & kBootModeSafe) == 0) &&␊ |
| 489 | !gOverrideKernel &&␊ |
| 490 | (gBootFileType == kBlockDeviceType) &&␊ |
| 491 | (gMKextName[0] == '\0') &&␊ |
| 492 | (gBootKernelCacheFile[0] != '\0'));␊ |
| 493 | ␊ |
| 494 | ␉␉verbose("Loading Darwin %s\n", osxVersion);␊ |
| 495 | ␉␉␊ |
| 496 | if (trycache) do {␊ |
| 497 | ␊ |
| 498 | // if we haven't found the kernel yet, don't use the cache␊ |
| 499 | ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊ |
| 500 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊ |
| 501 | trycache = 0;␊ |
| 502 | break;␊ |
| 503 | }␊ |
| 504 | ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊ |
| 505 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
| 506 | || (cachetime < kerneltime)) {␊ |
| 507 | trycache = 0;␊ |
| 508 | break;␊ |
| 509 | }␊ |
| 510 | ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊ |
| 511 | if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊ |
| 512 | && (cachetime < exttime)) {␊ |
| 513 | trycache = 0;␊ |
| 514 | break;␊ |
| 515 | }␊ |
| 516 | if (kerneltime > exttime) {␊ |
| 517 | exttime = kerneltime;␊ |
| 518 | }␊ |
| 519 | if (cachetime != (exttime + 1)) {␊ |
| 520 | trycache = 0;␊ |
| 521 | break;␊ |
| 522 | }␊ |
| 523 | } while (0);␊ |
| 524 | ␊ |
| 525 | do {␊ |
| 526 | if (trycache) {␊ |
| 527 | bootFile = gBootKernelCacheFile;␊ |
| 528 | verbose("Loading kernel cache %s\n", bootFile);␊ |
| 529 | ret = LoadFile(bootFile);␊ |
| 530 | binary = (void *)kLoadAddr;␊ |
| 531 | if (ret >= 0) {␊ |
| 532 | break;␊ |
| 533 | }␊ |
| 534 | }␊ |
| 535 | bootFile = bootInfo->bootFile;␊ |
| 536 | ␊ |
| 537 | // Try to load kernel image from alternate locations on boot helper partitions.␊ |
| 538 | sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊ |
| 539 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
| 540 | ␉ ␉ if (ret == -1)␊ |
| 541 | ␉ ␉ {␊ |
| 542 | sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊ |
| 543 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
| 544 | if (ret == -1)␊ |
| 545 | {␊ |
| 546 | sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊ |
| 547 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
| 548 | if (ret == -1)␊ |
| 549 | {␊ |
| 550 | // Not found any alternate locations, using the original kernel image path.␊ |
| 551 | strcpy(bootFileSpec, bootFile);␊ |
| 552 | }␊ |
| 553 | }␊ |
| 554 | }␊ |
| 555 | ␉␉␉␊ |
| 556 | verbose("Loading kernel %s\n", bootFileSpec);␊ |
| 557 | ret = LoadThinFatFile(bootFileSpec, &binary);␊ |
| 558 | if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊ |
| 559 | {␊ |
| 560 | archCpuType = CPU_TYPE_I386;␊ |
| 561 | ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊ |
| 562 | }␊ |
| 563 | ␉␉␉␊ |
| 564 | } while (0);␊ |
| 565 | ␊ |
| 566 | clearActivityIndicator();␊ |
| 567 | #if DEBUG␊ |
| 568 | printf("Pausing...");␊ |
| 569 | sleep(8);␊ |
| 570 | #endif␊ |
| 571 | ␊ |
| 572 | if (ret <= 0) {␊ |
| 573 | ␉␉␉printf("Can't find %s\n", bootFile);␊ |
| 574 | ␊ |
| 575 | ␉␉␉if(gui.initialised) {␊ |
| 576 | ␉␉␉␉sleep(1);␊ |
| 577 | ␉␉␉␉drawBackground();␊ |
| 578 | ␉␉␉␉gui.devicelist.draw = true;␊ |
| 579 | ␉␉␉␉gui.redraw = true;␊ |
| 580 | ␉␉␉}␊ |
| 581 | if (gBootFileType == kNetworkDeviceType) {␊ |
| 582 | // Return control back to PXE. Don't unload PXE base code.␊ |
| 583 | gUnloadPXEOnExit = false;␊ |
| 584 | break;␊ |
| 585 | }␊ |
| 586 | } else {␊ |
| 587 | /* Won't return if successful. */␊ |
| 588 | ret = ExecKernel(binary);␊ |
| 589 | }␊ |
| 590 | }␊ |
| 591 | ␊ |
| 592 | // chainboot␊ |
| 593 | if (status==1) {␊ |
| 594 | ␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊ |
| 595 | ␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊ |
| 596 | ␉}␊ |
| 597 | }␊ |
| 598 | ␉␊ |
| 599 | if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
| 600 | ␉nbpUnloadBaseCode();␊ |
| 601 | }␊ |
| 602 | }␊ |
| 603 | ␊ |
| 604 | /*!␊ |
| 605 | Selects a new BIOS device, taking care to update the global state appropriately.␊ |
| 606 | */␊ |
| 607 | /*␊ |
| 608 | static void selectBiosDevice(void)␊ |
| 609 | {␊ |
| 610 | struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
| 611 | CacheReset();␊ |
| 612 | diskFreeMap(oldMap);␊ |
| 613 | oldMap = NULL;␊ |
| 614 | ␊ |
| 615 | int dev = selectAlternateBootDevice(gBIOSDev);␊ |
| 616 | ␊ |
| 617 | BVRef bvchain = scanBootVolumes(dev, 0);␊ |
| 618 | BVRef bootVol = selectBootVolume(bvchain);␊ |
| 619 | gBootVolume = bootVol;␊ |
| 620 | setRootVolume(bootVol);␊ |
| 621 | gBIOSDev = dev;␊ |
| 622 | }␊ |
| 623 | */␊ |
| 624 | ␊ |
| 625 | #define BASE 65521L /* largest prime smaller than 65536 */␊ |
| 626 | #define NMAX 5000␊ |
| 627 | // NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊ |
| 628 | ␊ |
| 629 | #define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊ |
| 630 | #define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊ |
| 631 | #define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊ |
| 632 | #define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊ |
| 633 | #define DO16(buf) DO8(buf,0); DO8(buf,8);␊ |
| 634 | ␊ |
| 635 | unsigned long Adler32(unsigned char *buf, long len)␊ |
| 636 | {␊ |
| 637 | unsigned long s1 = 1; // adler & 0xffff;␊ |
| 638 | unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
| 639 | unsigned long result;␊ |
| 640 | int k;␊ |
| 641 | ␊ |
| 642 | while (len > 0) {␊ |
| 643 | k = len < NMAX ? len : NMAX;␊ |
| 644 | len -= k;␊ |
| 645 | while (k >= 16) {␊ |
| 646 | DO16(buf);␊ |
| 647 | buf += 16;␊ |
| 648 | k -= 16;␊ |
| 649 | }␊ |
| 650 | if (k != 0) do {␊ |
| 651 | s1 += *buf++;␊ |
| 652 | s2 += s1;␊ |
| 653 | } while (--k);␊ |
| 654 | s1 %= BASE;␊ |
| 655 | s2 %= BASE;␊ |
| 656 | }␊ |
| 657 | result = (s2 << 16) | s1;␊ |
| 658 | return OSSwapHostToBigInt32(result);␊ |
| 659 | }␊ |
| 660 | |
