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

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