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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#include "modules.h"␊
62#include "graphics.h"␊
63␊
64long gBootMode; /* defaults to 0 == kBootModeNormal */␊
65bool gOverrideKernel;␊
66static char gBootKernelCacheFile[512];␊
67static char gCacheNameAdler[64 + 256];␊
68char *gPlatformName = gCacheNameAdler;␊
69char gRootDevice[512];␊
70char gMKextName[512];␊
71char gMacOSVersion[8];␊
72void *gRootPCIDev;␊
73void *gPlatform;␊
74void *gBootOrder;␊
75void *gSMBIOS;␊
76int gDualLink;␊
77␊
78bool gEnableCDROMRescan;␊
79bool gScanSingleDrive;␊
80␊
81int bvCount = 0;␊
82//int␉␉menucount = 0;␊
83int gDeviceCount = 0; ␊
84␊
85BVRef bvr;␊
86BVRef menuBVR;␊
87BVRef bvChain;␊
88bool useGUI;␊
89␊
90//static void selectBiosDevice(void);␊
91static unsigned long Adler32(unsigned char *buffer, long length);␊
92static bool checkOSVersion(const char * version);␊
93static bool getOSVersion();␊
94␊
95static bool gUnloadPXEOnExit = false;␊
96␊
97/*␊
98 * How long to wait (in seconds) to load the␊
99 * kernel after displaying the "boot:" prompt.␊
100 */␊
101#define kBootErrorTimeout 5␊
102␊
103␊
104//==========================================================================␊
105// Zero the BSS.␊
106␊
107static void zeroBSS(void)␊
108{␊
109␉extern char _DATA__bss__begin, _DATA__bss__end;␊
110␉extern char _DATA__common__begin, _DATA__common__end;␊
111␊
112␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊
113␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊
114}␊
115␊
116//==========================================================================␊
117// Malloc error function␊
118␊
119static void malloc_error(char *addr, size_t size, const char *file, int line)␊
120{␊
121␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊
122}␊
123␊
124//==========================================================================␊
125//Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊
126//␊
127void initialize_runtime(void)␊
128{␊
129␉zeroBSS();␊
130␉malloc_init(0, 0, 0, malloc_error);␊
131}␊
132␊
133//==========================================================================␊
134// execKernel - Load the kernel image (mach-o) and jump to its entry point.␊
135␊
136static int ExecKernel(void *binary)␊
137{␊
138␉entry_t␉␉␉␉␉ kernelEntry;␊
139␉int␉␉␉␉␉␉ ret;␊
140␉␊
141␉bootArgs->kaddr = bootArgs->ksize = 0;␊
142␉execute_hook("ExecKernel", (void*)binary, NULL, NULL, NULL);␊
143␉␊
144␉ret = DecodeKernel(binary,␊
145␉␉␉␉␉ &kernelEntry,␊
146␉␉␉␉␉ (char **) &bootArgs->kaddr,␊
147␉␉␉␉␉ (int *)&bootArgs->ksize );␊
148␉␊
149␉if ( ret != 0 )␊
150␉␉return ret;␊
151␉␊
152␉// Reserve space for boot args␊
153␉reserveKernBootStruct();␊
154␉␊
155␉// Notify modules that the kernel has been decoded␊
156␉execute_hook("DecodedKernel", (void*)binary, NULL, NULL, NULL);␊
157␉␊
158 setupFakeEfi();␊
159␊
160␉// Load boot drivers from the specifed root path.␊
161 //if (!gHaveKernelCache)␊
162 LoadDrivers("/");␊
163␉␊
164 execute_hook("DriversLoaded", (void*)binary, NULL, NULL, NULL);␊
165␊
166␉clearActivityIndicator();␊
167/*␉␊
168␉if (gErrors) {␊
169␉␉printf("Errors encountered while starting up the computer.\n");␊
170␉␉printf("Pausing %d seconds...\n", kBootErrorTimeout);␊
171␉␉sleep(kBootErrorTimeout);␊
172␉}␊
173*/␉␉␊
174␉md0Ramdisk();␊
175␉␊
176␉verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊
177␉␊
178␉// Cleanup the PXE base code.␊
179␉␊
180␉if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊
181␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊
182␉␉{␊
183␉␉␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊
184␉␉␉sleep(2);␊
185␉␉}␊
186␉}␊
187␉␊
188␉bool dummyVal;␊
189␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->chameleonConfig) && dummyVal) {␊
190␉␉printf("(Wait) ");␊
191␉␉pause();␊
192␉}␊
193␉␊
194␉usb_loop();␊
195␉␊
196 if (checkOSVersion("10.7"))␊
197 {␊
198 execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␉// Notify modules that the kernel is about to be started␊
199 }␊
200 else␊
201 {␊
202 execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgsPreLion, NULL, NULL);␉// Notify modules that the kernel is about to be started␊
203 }␊
204 ␊
205␉// If we were in text mode, switch to graphics mode.␊
206␉// This will draw the boot graphics unless we are in␊
207␉// verbose mode.␊
208␉␊
209␉if(gVerboseMode)␊
210␉ setVideoMode( GRAPHICS_MODE, 0 );␊
211␉else␊
212␉ drawBootGraphics();␊
213␉␊
214␉setupBooterLog();␊
215␉␊
216␉finalizeBootStruct();␊
217␉␊
218 if (checkOSVersion("10.7")) {␊
219␉␉␊
220␉␉// Masking out so that Lion doesn't doublefault␊
221␉␉outb(0x21, 0xff);␉/* Maskout all interrupts Pic1 */␊
222␉␉outb(0xa1, 0xff);␉/* Maskout all interrupts Pic2 */␊
223␉␉␊
224␉␉// Jump to kernel's entry point. There's no going back now.␊
225␉␉␊
226␉␉startprog( kernelEntry, bootArgs );␊
227␉}␊
228␉else {␊
229␉␉// Jump to kernel's entry point. There's no going back now.␊
230␉␉␊
231␉␉startprog( kernelEntry, bootArgsPreLion );␊
232␉}␊
233␉␊
234␉// Not reached␊
235␉return 0;␊
236}␊
237␊
238//==========================================================================␊
239// This is the entrypoint from real-mode which functions exactly as it did␊
240// before. Multiboot does its own runtime initialization, does some of its␊
241// own things, and then calls common_boot.␊
242void boot(int biosdev)␊
243{␊
244␉initialize_runtime();␊
245␉// Enable A20 gate before accessing memory above 1Mb.␊
246␉enableA20();␊
247␉common_boot(biosdev);␊
248}␊
249␊
250//==========================================================================␊
251// The 'main' function for the booter. Called by boot0 when booting␊
252// from a block device, or by the network booter.␊
253//␊
254// arguments:␊
255// biosdev - Value passed from boot1/NBP to specify the device␊
256// that the booter was loaded from.␊
257//␊
258// If biosdev is kBIOSDevNetwork, then this function will return if␊
259// booting was unsuccessful. This allows the PXE firmware to try the␊
260// next boot device on its list.␊
261void common_boot(int biosdev)␊
262{␊
263 int status;␊
264 char *bootFile;␊
265 unsigned long adler32;␊
266 bool quiet;␊
267 bool firstRun = true;␊
268 bool instantMenu;␊
269 bool rescanPrompt;␊
270 unsigned int allowBVFlags = kBVFlagSystemVolume | kBVFlagForeignBoot;␊
271 unsigned int denyBVFlags = kBVFlagEFISystem;␊
272␊
273 // Set reminder to unload the PXE base code. Neglect to unload␊
274 // the base code will result in a hang or kernel panic.␊
275 gUnloadPXEOnExit = true;␊
276␊
277 // Record the device that the booter was loaded from.␊
278 gBIOSDev = biosdev & kBIOSDevMask;␊
279␊
280 // Initialize boot info structure.␊
281 initKernBootStruct();␊
282␊
283␉initBooterLog();␊
284␊
285 // Setup VGA text mode.␊
286 // Not sure if it is safe to call setVideoMode() before the␊
287 // config table has been loaded. Call video_mode() instead.␊
288#if DEBUG␊
289 printf("before video_mode\n");␊
290#endif␊
291 video_mode( 2 ); // 80x25 mono text mode.␊
292#if DEBUG␊
293 printf("after video_mode\n");␊
294#endif␊
295␊
296 // Scan and record the system's hardware information.␊
297 scan_platform();␊
298␊
299 // First get info for boot volume.␊
300 scanBootVolumes(gBIOSDev, 0);␊
301 bvChain = getBVChainForBIOSDev(gBIOSDev);␊
302 setBootGlobals(bvChain);␊
303 ␊
304 // Load boot.plist config file␊
305 status = loadChameleonConfig(&bootInfo->chameleonConfig);␊
306␊
307 if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->chameleonConfig) && quiet) {␊
308 gBootMode |= kBootModeQuiet;␊
309 }␊
310␊
311 // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊
312 if (getBoolForKey(kInsantMenuKey, &instantMenu, &bootInfo->chameleonConfig) && instantMenu) {␊
313 firstRun = false;␊
314 }␊
315␊
316 // Loading preboot ramdisk if exists.␊
317 loadPrebootRAMDisk();␊
318␊
319 // Disable rescan option by default␊
320 gEnableCDROMRescan = false;␊
321␊
322 // Enable it with Rescan=y in system config␊
323 if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->chameleonConfig) && gEnableCDROMRescan) {␊
324 gEnableCDROMRescan = true;␊
325 }␊
326␊
327 // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊
328 rescanPrompt = false;␊
329 if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->chameleonConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊
330 gEnableCDROMRescan = promptForRescanOption();␊
331 }␊
332␊
333 // Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊
334 if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->chameleonConfig) && gScanSingleDrive) {␊
335 gScanSingleDrive = true;␊
336 }␊
337␊
338 // Create a list of partitions on device(s).␊
339 if (gScanSingleDrive) {␊
340 scanBootVolumes(gBIOSDev, &bvCount);␊
341 } else {␊
342 scanDisks(gBIOSDev, &bvCount);␊
343 }␊
344␊
345 // Create a separated bvr chain using the specified filters.␊
346 bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
347␊
348 gBootVolume = selectBootVolume(bvChain);␊
349␊
350␉// Intialize module system ␊
351␉init_module_system();␊
352␉␊
353#if DEBUG␊
354 printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊
355 printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊
356 getchar();␊
357#endif␊
358␊
359␉useGUI = true;␊
360␉// Override useGUI default␊
361␉getBoolForKey(kGUIKey, &useGUI, &bootInfo->chameleonConfig);␊
362␉if (useGUI && initGUI())␊
363␉{␊
364␉␉// initGUI() returned with an error, disabling GUI.␊
365␉␉useGUI = false;␊
366␉}␊
367␊
368 setBootGlobals(bvChain);␊
369␊
370 // Parse args, load and start kernel.␊
371 while (1) {␊
372 const char *val;␊
373 int len;␊
374 int trycache;␊
375 long flags, cachetime, kerneltime, exttime, sleeptime, time;␊
376 int ret = -1;␊
377 void *binary = (void *)kLoadAddr;␊
378 bool tryresume;␊
379 bool tryresumedefault;␊
380 bool forceresume;␊
381␉␉bool usecache = false;//true;␊
382␊
383 // additional variable for testing alternate kernel image locations on boot helper partitions.␊
384 char bootFileSpec[512];␊
385␉␉␊
386 // Initialize globals.␊
387␊
388 sysConfigValid = false;␊
389 gErrors = false;␊
390␊
391 status = getBootOptions(firstRun);␊
392 firstRun = false;␊
393 if (status == -1) continue;␊
394␉␉ ␊
395 status = processBootOptions();␊
396 // Status==1 means to chainboot␊
397 if ( status == 1 ) break;␊
398 // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊
399 if ( status == -1 )␊
400 {␊
401 // gBootVolume == NULL usually means the user hit escape.␊
402 if(gBootVolume == NULL)␊
403 {␊
404 freeFilteredBVChain(bvChain);␊
405␊
406 if (gEnableCDROMRescan)␊
407 rescanBIOSDevice(gBIOSDev);␊
408 ␊
409 bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
410 setBootGlobals(bvChain);␊
411 setupDeviceList(&bootInfo->themeConfig);␊
412 }␊
413 continue;␊
414 }␊
415␉␉␊
416 // Other status (e.g. 0) means that we should proceed with boot.␊
417␉␉␊
418␉␉// Turn off any GUI elements␊
419␉␉if( bootArgs->Video.v_display == GRAPHICS_MODE )␊
420␉␉{␊
421␉␉␉gui.devicelist.draw = false;␊
422␉␉␉gui.bootprompt.draw = false;␊
423␉␉␉gui.menu.draw = false;␊
424␉␉␉gui.infobox.draw = false;␊
425␉␉␉gui.logo.draw = false;␊
426␉␉␉drawBackground();␊
427␉␉␉updateVRAM();␊
428␉␉}␊
429␉␉␊
430␉␉// Find out which version mac os we're booting.␊
431␉␉getOSVersion();␊
432␊
433␉␉if (platformCPUFeature(CPU_FEATURE_EM64T)) {␊
434␉␉␉archCpuType = CPU_TYPE_X86_64;␊
435␉␉} else {␊
436␉␉␉archCpuType = CPU_TYPE_I386;␊
437␉␉}␊
438␉␉if (getValueForKey(karch, &val, &len, &bootInfo->chameleonConfig)) {␊
439␉␉␉if (strncmp(val, "i386", 4) == 0) {␊
440␉␉␉␉archCpuType = CPU_TYPE_I386;␊
441␉␉␉}␊
442␉␉}␊
443 ␊
444 if (getValueForKey(kKernelArchKey, &val, &len, &bootInfo->chameleonConfig)) {␊
445␉␉␉if (strncmp(val, "i386", 4) == 0) {␊
446␉␉␉␉archCpuType = CPU_TYPE_I386;␊
447␉␉␉}␊
448␉␉}␊
449␊
450 //archCpuType = CPU_TYPE_I386;␊
451 ␊
452␉␉// Notify modules that we are attempting to boot␊
453␉␉execute_hook("PreBoot", NULL, NULL, NULL, NULL);␊
454␊
455␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->chameleonConfig)) {␊
456␉␉␉tryresume = true;␊
457␉␉␉tryresumedefault = true;␊
458␉␉} else {␊
459␉␉␉tryresumedefault = false;␊
460␉␉}␊
461␊
462␉␉if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->chameleonConfig)) {␊
463␉␉␉forceresume = false;␊
464␉␉}␊
465␉␉␊
466␉␉if (forceresume) {␊
467␉␉␉tryresume = true;␊
468␉␉␉tryresumedefault = false;␊
469␉␉}␊
470␉␉␊
471␉␉while (tryresume) {␊
472␉␉␉const char *tmp;␊
473␉␉␉BVRef bvr;␊
474␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->chameleonConfig))␊
475␉␉␉␉val="/private/var/vm/sleepimage";␊
476␉␉␉␊
477␉␉␉// Do this first to be sure that root volume is mounted␊
478␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊
479␊
480␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊
481␉␉␉␉break;␊
482␉␉␉␊
483␉␉␉// Can't check if it was hibernation Wake=y is required␊
484␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊
485␉␉␉␉break;␊
486␉␉␉␊
487␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊
488␉␉␉␉break;␊
489␉␉␉␊
490␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊
491#if DEBUG ␊
492␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊
493#endif ␊
494␉␉␉␉break;␊
495␉␉␉}␊
496␉␉␉␉␊
497␉␉␉HibernateBoot((char *)val);␊
498␉␉␉break;␊
499␉␉}␊
500 ␊
501␉␉getBoolForKey(kUseKernelCache, &usecache, &bootInfo->chameleonConfig);␊
502␉␉if(usecache) {␊
503␉␉␉if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {␊
504 if(val[0] == '\\')␊
505 {␊
506 len--;␊
507 val++;␊
508 }␊
509 strlcpy(gBootKernelCacheFile, val, len+1);␊
510␉␉␉}␊
511␉␉␉else {␊
512␉␉␉␉//Lion␊
513␉␉␉␉if (checkOSVersion("10.7")) {␊
514␉␉␉␉␉sprintf(gBootKernelCacheFile, "%skernelcache", kDefaultCachePathSnow);␊
515␉␉␉␉}␊
516␉␉␉␉// Snow Leopard␊
517␉␉␉␉else if (checkOSVersion("10.6")) {␊
518␉␉␉␉␉sprintf(gBootKernelCacheFile, "kernelcache_%s", (archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64");␊
519␉␉␉␉␉int lnam = sizeof(gBootKernelCacheFile) + 9; //with adler32␊
520␉␉␉␉␉//Slice - TODO ???␊
521␉␉␉␉␉// e.g. kernelcache_i386.E102928C.qSs0 = "unsaved" cache file.␊
522␉␉␉␉␉//␊
523␉␉␉␉␉// See kext_tools-180.2.1/kextcache_main.c:␊
524␉␉␉␉␉// "Source directory has changed since starting; "␊
525␉ // "not saving cache file %s."␊
526␉␉␉␉␉// or␊
527␉␉␉␉␉// "Source kernel has changed since starting; "␊
528␉ // "not saving cache file %s."␊
529␉␉␉␉␉␊
530␉␉␉␉␉char* name;␊
531␉␉␉␉␉long prev_time = 0;␊
532␉␉␉␉␉␊
533␉␉␉␉␉struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);␊
534␉␉␉␉␉␊
535␉␉␉␉␉while(readdir(cacheDir, (const char**)&name, &flags, &time) >= 0)␊
536␉␉␉␉␉{␊
537␉␉␉␉␉␉if(((flags & kFileTypeMask) != kFileTypeDirectory) && time > prev_time && strstr(name, gBootKernelCacheFile) && (name[lnam] != '.'))␊
538␉␉␉␉␉␉{␊
539␉␉␉␉␉␉␉sprintf(gBootKernelCacheFile, "%s%s", kDefaultCachePathSnow, name);␊
540␉␉␉␉␉␉␉prev_time = time;␊
541␉␉␉␉␉␉}␊
542␉␉␉␉␉}␊
543␉␉␉␉}␊
544␉␉␉␉else {␊
545␉␉␉␉␉// Reset cache name.␊
546␉␉␉␉␉bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊
547␉␉␉␉␉␊
548␉␉␉␉␉sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->chameleonConfig);␊
549␉␉␉␉␉␊
550␉␉␉␉␉adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊
551␉␉␉␉␉␊
552␉␉␉␉␉sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePathLeo, adler32);␊
553␉␉␉␉}␊
554␉␉␉}␊
555␉␉}␊
556␉␉␉␊
557 // Check for cache file.␊
558 trycache = (usecache && ␊
559␉␉␉␉␉((gBootMode & kBootModeSafe) == 0) &&␊
560 !gOverrideKernel &&␊
561 (gBootFileType == kBlockDeviceType) &&␊
562 (gMKextName[0] == '\0') &&␊
563 (gBootKernelCacheFile[0] != '\0'));␊
564␊
565␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊
566␉␉␊
567 if (trycache) do {␊
568 ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊
569 if(ret != 0) kerneltime = 0;␊
570 else if ((flags & kFileTypeMask) != kFileTypeFlat) {␊
571 trycache = 0;␊
572 break;␊
573 }␊
574␊
575 ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊
576 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊
577 || (cachetime < kerneltime)) {␊
578 trycache = 0;␊
579 break;␊
580 }␊
581 ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊
582 if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊
583 && (cachetime < exttime)) {␊
584 trycache = 0;␊
585 break;␊
586 }␊
587 if (ret == 0 && kerneltime > exttime) {␊
588 exttime = kerneltime;␊
589 }␊
590 if (ret == 0 && cachetime != (exttime + 1)) {␊
591 trycache = 0;␊
592 break;␊
593 }␊
594 } while (0);␊
595␊
596 do {␊
597 if (trycache) {␊
598 bootFile = gBootKernelCacheFile;␊
599 ␊
600␉␉␉␉verbose("Loading kernel cache %s\n", bootFile);␊
601␊
602 if (checkOSVersion("10.7")) {␊
603 ret = LoadThinFatFile(bootFile, &binary);␊
604␉␉␉␉}␊
605␉␉␉␉else {␊
606 ␉ret = LoadFile(bootFile);␊
607␉␉␉␉␉binary = (void *)kLoadAddr;␊
608␉␉␉␉}␊
609␉␉␉␉␊
610 if (ret >= 0)␊
611 break;␊
612␉␉␉␉␊
613␉␉␉␉verbose("Kernel cache did not load %s\n ", bootFile);␊
614 }␊
615␉␉␉␊
616 bootFile = bootInfo->bootFile;␊
617␊
618 // Try to load kernel image from alternate locations on boot helper partitions.␊
619 sprintf(bootFileSpec, "com.apple.boot.P%s", bootFile);␊
620 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
621 ␉ ␉ if (ret == -1)␊
622 ␉ ␉ {␊
623 sprintf(bootFileSpec, "com.apple.boot.R%s", bootFile);␊
624 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
625 if (ret == -1)␊
626 {␊
627 sprintf(bootFileSpec, "com.apple.boot.S%s", bootFile);␊
628 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
629 if (ret == -1)␊
630 {␊
631 // No alternate location found, using the original kernel image path.␊
632 strcpy(bootFileSpec, bootFile);␊
633 }␊
634 }␊
635 }␊
636 ␉␉␉␊
637 if (checkOSVersion("10.7"))␊
638 {␊
639 //Lion, dont load kernel if haz cache␊
640 if (!trycache) {␊
641 ␉␉verbose("Loading kernel %s\n", bootFileSpec);␊
642 ␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␊
643 ␉␉if (ret <= 0 && archCpuType == CPU_TYPE_X86_64) {␊
644 ␉␉␉archCpuType = CPU_TYPE_I386;␊
645 ␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊
646 ␉␉}␊
647␉␉ } ␊
648␉␉␉␉else ret = 1;␊
649 } ␊
650␉␉␉else {␊
651 //Snow Leopard or older␊
652 verbose("Loading kernel %s\n", bootFileSpec);␊
653 ret = LoadThinFatFile(bootFileSpec, &binary);␊
654 if (ret <= 0 && archCpuType == CPU_TYPE_X86_64) {␊
655 archCpuType = CPU_TYPE_I386;␊
656 ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊
657 }␊
658 }␊
659 } while (0);␊
660␊
661 clearActivityIndicator();␊
662#if DEBUG␊
663 printf("Pausing...");␊
664 sleep(8);␊
665#endif␊
666␊
667 if (ret <= 0) {␊
668␉␉␉printf("Can't find %s\n", bootFile);␊
669␊
670␉␉␉sleep(1);␊
671␊
672 if (gBootFileType == kNetworkDeviceType) {␊
673 // Return control back to PXE. Don't unload PXE base code.␊
674 gUnloadPXEOnExit = false;␊
675 break;␊
676 }␊
677 } else {␊
678 /* Won't return if successful. */␊
679 ret = ExecKernel(binary);␊
680 }␊
681 }␊
682 ␊
683 // chainboot␊
684 if (status==1) {␊
685␉␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊
686␉␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊
687␉␉}␊
688 }␊
689␉␊
690 if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊
691␉␉nbpUnloadBaseCode();␊
692 }␊
693}␊
694␊
695/*!␊
696 Selects a new BIOS device, taking care to update the global state appropriately.␊
697 */␊
698/*␊
699static void selectBiosDevice(void)␊
700{␊
701 struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊
702 CacheReset();␊
703 diskFreeMap(oldMap);␊
704 oldMap = NULL;␊
705␊
706 int dev = selectAlternateBootDevice(gBIOSDev);␊
707␊
708 BVRef bvchain = scanBootVolumes(dev, 0);␊
709 BVRef bootVol = selectBootVolume(bvchain);␊
710 gBootVolume = bootVol;␊
711 setRootVolume(bootVol);␊
712 gBIOSDev = dev;␊
713}␊
714*/␊
715␊
716bool checkOSVersion(const char * version) ␊
717{␊
718␉return ((gMacOSVersion[0] == version[0]) && (gMacOSVersion[1] == version[1]) && (gMacOSVersion[2] == version[2]) && (gMacOSVersion[3] == version[3]));␊
719}␊
720␊
721bool getOSVersion()␊
722{␊
723␉bool valid = false;␊
724␉config_file_t systemVersion;␊
725␉const char *val;␊
726␉int len;␊
727␉␊
728␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊
729␉{␊
730␉␉valid = true;␊
731␉}␊
732␉else if (!loadConfigFile("System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊
733␉{␊
734␉␉valid = true;␊
735␉}␊
736␉␊
737␉if (valid)␊
738␉{␊
739␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion))␊
740␉␉{␊
741␉␉␉// getValueForKey uses const char for val␊
742␉␉␉// so copy it and trim␊
743␉␉␉*gMacOSVersion = '\0';␊
744␉␉␉strncat(gMacOSVersion, val, MIN(len, 4));␊
745␉␉}␊
746␉␉else␊
747␉␉␉valid = false;␊
748␉}␊
749␉␊
750␉return valid;␊
751}␊
752␊
753#define BASE 65521L /* largest prime smaller than 65536 */␊
754#define NMAX 5000␊
755// NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊
756␊
757#define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊
758#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊
759#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊
760#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊
761#define DO16(buf) DO8(buf,0); DO8(buf,8);␊
762␊
763unsigned long Adler32(unsigned char *buf, long len)␊
764{␊
765 unsigned long s1 = 1; // adler & 0xffff;␊
766 unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊
767 unsigned long result;␊
768 int k;␊
769␊
770 while (len > 0) {␊
771 k = len < NMAX ? len : NMAX;␊
772 len -= k;␊
773 while (k >= 16) {␊
774 DO16(buf);␊
775 buf += 16;␊
776 k -= 16;␊
777 }␊
778 if (k != 0) do {␊
779 s1 += *buf++;␊
780 s2 += s1;␊
781 } while (--k);␊
782 s1 %= BASE;␊
783 s2 %= BASE;␊
784 }␊
785 result = (s2 << 16) | s1;␊
786 return OSSwapHostToBigInt32(result);␊
787}␊
788

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