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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 moduals 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␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊
492␉␉␉␉break;␊
493␉␉␉}␊
494␉␉␉␉␊
495␉␉␉HibernateBoot((char *)val);␊
496␉␉␉break;␊
497␉␉}␊
498 ␊
499␉␉getBoolForKey(kUseKernelCache, &usecache, &bootInfo->chameleonConfig);␊
500␉␉if(usecache) {␊
501␉␉␉if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {␊
502 if(val[0] == '\\')␊
503 {␊
504 len--;␊
505 val++;␊
506 }␊
507 strlcpy(gBootKernelCacheFile, val, len+1);␊
508␉␉␉}␊
509␉␉␉else {␊
510␉␉␉␉//Lion␊
511␉␉␉␉if (checkOSVersion("10.7")) {␊
512␉␉␉␉␉sprintf(gBootKernelCacheFile, "%skernelcache", kDefaultCachePathSnow);␊
513␉␉␉␉}␊
514␉␉␉␉// Snow Leopard␊
515␉␉␉␉else if (checkOSVersion("10.6")) {␊
516␉␉␉␉␉sprintf(gBootKernelCacheFile, "kernelcache_%s", (archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64");␊
517␉␉␉␉␉int lnam = sizeof(gBootKernelCacheFile) + 9; //with adler32␊
518␉␉␉␉␉//Slice - TODO ???␊
519␉␉␉␉␉// e.g. kernelcache_i386.E102928C.qSs0 = "unsaved" cache file.␊
520␉␉␉␉␉//␊
521␉␉␉␉␉// See kext_tools-180.2.1/kextcache_main.c:␊
522␉␉␉␉␉// "Source directory has changed since starting; "␊
523␉ // "not saving cache file %s."␊
524␉␉␉␉␉// or␊
525␉␉␉␉␉// "Source kernel has changed since starting; "␊
526␉ // "not saving cache file %s."␊
527␉␉␉␉␉␊
528␉␉␉␉␉char* name;␊
529␉␉␉␉␉long prev_time = 0;␊
530␉␉␉␉␉␊
531␉␉␉␉␉struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);␊
532␉␉␉␉␉␊
533␉␉␉␉␉while(readdir(cacheDir, (const char**)&name, &flags, &time) >= 0)␊
534␉␉␉␉␉{␊
535␉␉␉␉␉␉if(((flags & kFileTypeMask) != kFileTypeDirectory) && time > prev_time && strstr(name, gBootKernelCacheFile) && (name[lnam] != '.'))␊
536␉␉␉␉␉␉{␊
537␉␉␉␉␉␉␉sprintf(gBootKernelCacheFile, "%s%s", kDefaultCachePathSnow, name);␊
538␉␉␉␉␉␉␉prev_time = time;␊
539␉␉␉␉␉␉}␊
540␉␉␉␉␉}␊
541␉␉␉␉}␊
542␉␉␉␉else {␊
543␉␉␉␉␉// Reset cache name.␊
544␉␉␉␉␉bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊
545␉␉␉␉␉␊
546␉␉␉␉␉sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->chameleonConfig);␊
547␉␉␉␉␉␊
548␉␉␉␉␉adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊
549␉␉␉␉␉␊
550␉␉␉␉␉sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePathLeo, adler32);␊
551␉␉␉␉}␊
552␉␉␉}␊
553␉␉}␊
554␉␉␉␊
555 // Check for cache file.␊
556 trycache = (usecache && ␊
557␉␉␉␉␉((gBootMode & kBootModeSafe) == 0) &&␊
558 !gOverrideKernel &&␊
559 (gBootFileType == kBlockDeviceType) &&␊
560 (gMKextName[0] == '\0') &&␊
561 (gBootKernelCacheFile[0] != '\0'));␊
562␊
563␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊
564␉␉␊
565 if (trycache) do {␊
566 ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊
567 if(ret != 0) kerneltime = 0;␊
568 else if ((flags & kFileTypeMask) != kFileTypeFlat) {␊
569 trycache = 0;␊
570 break;␊
571 }␊
572␊
573 ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊
574 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊
575 || (cachetime < kerneltime)) {␊
576 trycache = 0;␊
577 break;␊
578 }␊
579 ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊
580 if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊
581 && (cachetime < exttime)) {␊
582 trycache = 0;␊
583 break;␊
584 }␊
585 if (ret == 0 && kerneltime > exttime) {␊
586 exttime = kerneltime;␊
587 }␊
588 if (ret == 0 && cachetime != (exttime + 1)) {␊
589 trycache = 0;␊
590 break;␊
591 }␊
592 } while (0);␊
593␊
594 do {␊
595 if (trycache) {␊
596 bootFile = gBootKernelCacheFile;␊
597 ␊
598␉␉␉␉verbose("Loading kernel cache %s\n", bootFile);␊
599␊
600 if (checkOSVersion("10.7")) {␊
601 ret = LoadThinFatFile(bootFile, &binary);␊
602␉␉␉␉}␊
603␉␉␉␉else {␊
604 ␉ret = LoadFile(bootFile);␊
605␉␉␉␉␉binary = (void *)kLoadAddr;␊
606␉␉␉␉}␊
607␉␉␉␉␊
608 if (ret >= 0)␊
609 break;␊
610␉␉␉␉␊
611␉␉␉␉verbose("Kernel cache did not load %s\n ", bootFile);␊
612 }␊
613␉␉␉␊
614 bootFile = bootInfo->bootFile;␊
615␊
616 // Try to load kernel image from alternate locations on boot helper partitions.␊
617 sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊
618 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
619 ␉ ␉ if (ret == -1)␊
620 ␉ ␉ {␊
621 sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊
622 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
623 if (ret == -1)␊
624 {␊
625 sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊
626 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
627 if (ret == -1)␊
628 {␊
629 // No alternate location found, using the original kernel image path.␊
630 strcpy(bootFileSpec, bootFile);␊
631 }␊
632 }␊
633 }␊
634 ␉␉␉␊
635 if (checkOSVersion("10.7"))␊
636 {␊
637 //Lion, dont load kernel if haz cache␊
638 if (!trycache) {␊
639 ␉␉verbose("Loading kernel %s\n", bootFileSpec);␊
640 ␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␊
641 ␉␉if (ret <= 0 && archCpuType == CPU_TYPE_X86_64) {␊
642 ␉␉␉archCpuType = CPU_TYPE_I386;␊
643 ␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊
644 ␉␉}␊
645␉␉ } ␊
646␉␉␉␉else ret = 1;␊
647 } ␊
648␉␉␉else {␊
649 //Snow Leopard or older␊
650 verbose("Loading kernel %s\n", bootFileSpec);␊
651 ret = LoadThinFatFile(bootFileSpec, &binary);␊
652 if (ret <= 0 && archCpuType == CPU_TYPE_X86_64) {␊
653 archCpuType = CPU_TYPE_I386;␊
654 ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊
655 }␊
656 }␊
657 } while (0);␊
658␊
659 clearActivityIndicator();␊
660#if DEBUG␊
661 printf("Pausing...");␊
662 sleep(8);␊
663#endif␊
664␊
665 if (ret <= 0) {␊
666␉␉␉printf("Can't find %s\n", bootFile);␊
667␊
668␉␉␉sleep(1);␊
669␊
670 if (gBootFileType == kNetworkDeviceType) {␊
671 // Return control back to PXE. Don't unload PXE base code.␊
672 gUnloadPXEOnExit = false;␊
673 break;␊
674 }␊
675 } else {␊
676 /* Won't return if successful. */␊
677 ret = ExecKernel(binary);␊
678 }␊
679 }␊
680 ␊
681 // chainboot␊
682 if (status==1) {␊
683␉␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊
684␉␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊
685␉␉}␊
686 }␊
687␉␊
688 if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊
689␉␉nbpUnloadBaseCode();␊
690 }␊
691}␊
692␊
693/*!␊
694 Selects a new BIOS device, taking care to update the global state appropriately.␊
695 */␊
696/*␊
697static void selectBiosDevice(void)␊
698{␊
699 struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊
700 CacheReset();␊
701 diskFreeMap(oldMap);␊
702 oldMap = NULL;␊
703␊
704 int dev = selectAlternateBootDevice(gBIOSDev);␊
705␊
706 BVRef bvchain = scanBootVolumes(dev, 0);␊
707 BVRef bootVol = selectBootVolume(bvchain);␊
708 gBootVolume = bootVol;␊
709 setRootVolume(bootVol);␊
710 gBIOSDev = dev;␊
711}␊
712*/␊
713␊
714bool checkOSVersion(const char * version) ␊
715{␊
716␉return ((gMacOSVersion[0] == version[0]) && (gMacOSVersion[1] == version[1]) && (gMacOSVersion[2] == version[2]) && (gMacOSVersion[3] == version[3]));␊
717}␊
718␊
719bool getOSVersion()␊
720{␊
721␉bool valid = false;␊
722␉config_file_t systemVersion;␊
723␉const char *val;␊
724␉int len;␊
725␉␊
726␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊
727␉{␊
728␉␉valid = true;␊
729␉}␊
730␉else if (!loadConfigFile("System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊
731␉{␊
732␉␉valid = true;␊
733␉}␊
734␉␊
735␉if (valid)␊
736␉{␊
737␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion))␊
738␉␉{␊
739␉␉␉// getValueForKey uses const char for val␊
740␉␉␉// so copy it and trim␊
741␉␉␉*gMacOSVersion = '\0';␊
742␉␉␉strncat(gMacOSVersion, val, MIN(len, 4));␊
743␉␉}␊
744␉␉else␊
745␉␉␉valid = false;␊
746␉}␊
747␉␊
748␉return valid;␊
749}␊
750␊
751#define BASE 65521L /* largest prime smaller than 65536 */␊
752#define NMAX 5000␊
753// NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊
754␊
755#define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊
756#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊
757#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊
758#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊
759#define DO16(buf) DO8(buf,0); DO8(buf,8);␊
760␊
761unsigned long Adler32(unsigned char *buf, long len)␊
762{␊
763 unsigned long s1 = 1; // adler & 0xffff;␊
764 unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊
765 unsigned long result;␊
766 int k;␊
767␊
768 while (len > 0) {␊
769 k = len < NMAX ? len : NMAX;␊
770 len -= k;␊
771 while (k >= 16) {␊
772 DO16(buf);␊
773 buf += 16;␊
774 k -= 16;␊
775 }␊
776 if (k != 0) do {␊
777 s1 += *buf++;␊
778 s2 += s1;␊
779 } while (--k);␊
780 s1 %= BASE;␊
781 s2 %= BASE;␊
782 }␊
783 result = (s2 << 16) | s1;␊
784 return OSSwapHostToBigInt32(result);␊
785}␊
786

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