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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 "acpi_patcher.h"␊
57#include "sl.h"␊
58#include "libsa.h"␊
59#include "ramdisk.h"␊
60#include "platform.h"␊
61#include "graphics.h"␊
62#include "pci.h"␊
63␊
64#include "modules.h"␊
65␊
66#define DEBUG 0␊
67␊
68long gBootMode; /* defaults to 0 == kBootModeNormal */␊
69bool gOverrideKernel;␊
70static char gBootKernelCacheFile[512];␊
71static char gCacheNameAdler[64 + 256];␊
72char *gPlatformName = gCacheNameAdler;␊
73char gRootDevice[512];␊
74char gMKextName[512];␊
75char gMacOSVersion[8];␊
76void *gRootPCIDev;␊
77void *gPlatform;␊
78void *gBootOrder;␊
79void *gSMBIOS;␊
80int gDualLink;␊
81#ifndef OPTION_ROM␊
82bool gEnableCDROMRescan;␊
83bool gScanSingleDrive;␊
84#endif␊
85config_file_t systemVersion;␉␉// system.plist of booting partition␊
86␊
87␊
88int bvCount = 0;␊
89//int␉menucount = 0;␊
90int gDeviceCount = 0; ␊
91␊
92BVRef bvr;␊
93BVRef menuBVR;␊
94BVRef bvChain;␊
95␊
96//static void selectBiosDevice(void);␊
97//static unsigned long Adler32(unsigned char *buffer, long length);␊
98static bool getOSVersion(char *str);␊
99␊
100#ifndef OPTION_ROM␊
101static bool gUnloadPXEOnExit = false;␊
102#endif␊
103␊
104/*␊
105 * How long to wait (in seconds) to load the␊
106 * kernel after displaying the "boot:" prompt.␊
107 */␊
108#define kBootErrorTimeout 5␊
109␊
110/*␊
111 * Default path to kernel cache file␊
112 */␊
113 //Slice - first one for Leopard␊
114#define kDefaultCachePath "/System/Library/Caches/com.apple.kernelcaches/"␊
115#define kDefaultCachePathSnow "/System/Library/Caches/com.apple.kext.caches/Startup/"␊
116//#define kDefaultCachePathTiger "/System/Library/Extensions.kextcache"␊
117//file://localhost/System/Library/Extensions.kextcache␊
118␊
119␊
120␊
121//==========================================================================␊
122// Zero the BSS.␊
123␊
124static void zeroBSS(void)␊
125{␊
126␉extern char _DATA__bss__begin, _DATA__bss__end;␊
127␉extern char _DATA__common__begin, _DATA__common__end;␊
128␉␊
129␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊
130␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊
131}␊
132␊
133//==========================================================================␊
134// Malloc error function␊
135␊
136static void malloc_error(char *addr, size_t size, const char *file, int line)␊
137{␊
138␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊
139}␊
140␊
141//==========================================================================␊
142//Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊
143//␊
144void initialize_runtime(void)␊
145{␊
146␉zeroBSS();␊
147␉malloc_init(0, 0, 0, malloc_error);␊
148}␊
149␊
150//==========================================================================␊
151// execKernel - Load the kernel image (mach-o) and jump to its entry point.␊
152␊
153int ExecKernel(void *binary)␊
154{␊
155 entry_t kernelEntry;␊
156 int ret;␊
157␉␊
158 bootArgs->kaddr = bootArgs->ksize = 0;␊
159␉execute_hook("ExecKernel", (void*)binary, NULL, NULL, NULL);␊
160␊
161 ret = DecodeKernel(binary,␊
162 &kernelEntry,␊
163 (char **) &bootArgs->kaddr,␊
164 (int *)&bootArgs->ksize );␊
165␊
166 if ( ret != 0 )␊
167 return ret;␊
168 // Reserve space for boot args␊
169 reserveKernBootStruct();␊
170␉␊
171 // Load boot drivers from the specifed root path.␊
172␉execute_hook("DecodedKernel", (void*)binary, NULL, NULL, NULL);␊
173␊
174␉␊
175␉setupFakeEfi();␊
176␉␊
177 if (!gHaveKernelCache) {␊
178␉␉LoadDrivers("/");␊
179 }␊
180␉␊
181 clearActivityIndicator();␊
182␉␊
183 if (gErrors) {␊
184 msglog("Errors encountered while starting up the computer.\n");␊
185 // printf("Pausing %d seconds...\n", kBootErrorTimeout);␊
186 // sleep(kBootErrorTimeout);␊
187 }␊
188␉␊
189␉md0Ramdisk();␊
190␉␊
191 verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "i386" : "x86_64");␊
192#ifndef OPTION_ROM␊
193 // Cleanup the PXE base code.␊
194␉␊
195 if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊
196␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊
197 {␊
198 ␉verbose("nbpUnloadBaseCode error %d\n", (int) ret);␊
199 sleep(2);␊
200 }␊
201 }␊
202#endif ␊
203 bool dummyVal;␊
204␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal)␊
205␉{␊
206␉␉printf("Press any key to continue...");␊
207␉␉getc();␊
208␉}␊
209␉␉␊
210␉if (bootArgs->Video.v_display == VGA_TEXT_MODE)␊
211␉{␊
212␉␉setVideoMode( GRAPHICS_MODE, 0 );␊
213␉␉// Draw gray screen. NOTE: no boot image, that's in the gui module␊
214#ifndef OPTION_ROM␊
215␉␉if(!gVerboseMode) drawColorRectangle(0, 0, DEFAULT_SCREEN_WIDTH, DEFAULT_SCREEN_HEIGHT, 0x01); //Slice -???␊
216#endif␊
217␉}␊
218␊
219 execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␉// Notify modules that the kernel is about to be started␊
220␉␊
221␉setupBooterLog();␊
222␉␊
223 finalizeBootStruct();␊
224 ␉␊
225␉// Jump to kernel's entry point. There's no going back now.␊
226 startprog( kernelEntry, bootArgs );␊
227␉␊
228 // Not reached␊
229␉␊
230 return 0;␊
231}␊
232␊
233//==========================================================================␊
234// This is the entrypoint from real-mode which functions exactly as it did␊
235// before. Multiboot does its own runtime initialization, does some of its␊
236// own things, and then calls common_boot.␊
237void boot(int biosdev)␊
238{␊
239␉initialize_runtime();␊
240␉// Enable A20 gate before accessing memory above 1Mb.␊
241␉enableA20();␊
242␉common_boot(biosdev);␊
243}␊
244␊
245//==========================================================================␊
246// The 'main' function for the booter. Called by boot0 when booting␊
247// from a block device, or by the network booter.␊
248//␊
249// arguments:␊
250// biosdev - Value passed from boot1/NBP to specify the device␊
251// that the booter was loaded from.␊
252//␊
253// If biosdev is kBIOSDevNetwork, then this function will return if␊
254// booting was unsuccessful. This allows the PXE firmware to try the␊
255// next boot device on its list.␊
256void common_boot(int biosdev)␊
257{␊
258 int status;␊
259␉int␉␉trycache;␊
260 char *bootFile;␊
261 unsigned long adler32;␊
262 bool quiet;␊
263 bool firstRun = true;␊
264 bool instantMenu;␊
265#ifndef OPTION_ROM␊
266 bool rescanPrompt;␊
267#endif␊
268 unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊
269 unsigned int denyBVFlags = kBVFlagEFISystem;␊
270␉␊
271#ifndef OPTION_ROM␊
272 // Set reminder to unload the PXE base code. Neglect to unload␊
273 // the base code will result in a hang or kernel panic.␊
274 gUnloadPXEOnExit = true;␊
275#endif␊
276␉␊
277 // Record the device that the booter was loaded from.␊
278 gBIOSDev = biosdev & kBIOSDevMask; // 0xff␊
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 video_mode( 2 ); // 80x25 mono text mode.␊
289␉␊
290 // Scan and record the system's hardware information.␊
291 scan_platform();␊
292␊
293 // First get info for boot volume.␊
294 scanBootVolumes(gBIOSDev, 0);␊
295 bvChain = getBVChainForBIOSDev(gBIOSDev);␊
296␉␊
297#if DEBUG␉␊
298 printf("get bvChain dev=%02x type=%02x part_no=%d\n", bvChain->biosdev, bvChain->type, bvChain->part_no); //dev=0x80 - flash-stick␊
299//␉␉getc();␊
300#endif␊
301␉␊
302 setBootGlobals(bvChain);␊
303␉␊
304 // Load boot.plist config file␊
305 status = loadSystemConfig(&bootInfo->bootConfig);␊
306␊
307 if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && 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->bootConfig) && instantMenu) {␊
313 firstRun = false;␊
314 }␊
315␉␊
316#ifndef OPTION_ROM␊
317␉// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊
318 if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {␊
319 gScanSingleDrive = true;␊
320 }␊
321␉␊
322␉// Create a list of partitions on device(s).␊
323 if (gScanSingleDrive)␊
324␉{␊
325␉␉scanBootVolumes(gBIOSDev, &bvCount);␊
326 } ␊
327␉else ␊
328#endif␊
329␉{␊
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␉gBootVolume = selectBootVolume(bvChain);␊
336␉␊
337#if DEBUG␉␊
338 printf("separated bvChain dev=%02x type=%02x part_no=%d\n", bvChain->biosdev, bvChain->type, bvChain->part_no); //dev=0x81 - HDD␊
339␉pause();␊
340#endif␊
341␉␊
342␉// Intialize module system␊
343␉if(init_module_system())␊
344␉{␊
345#if DEBUG␉␊
346␉␉printf("begin load_all_modules\n");␊
347//␉␉pause();␊
348#endif␊
349␉␉␊
350␉␉load_all_modules();␊
351␉}␊
352␉␊
353␉execute_hook("ModulesLoaded", NULL, NULL, NULL, NULL);␊
354#if DEBUG␊
355 printf("ModulesLoaded\n");␊
356//␉pause();␊
357#endif␊
358␉␊
359␉␊
360#ifndef OPTION_ROM␊
361 // Loading preboot ramdisk if exists.␊
362 loadPrebootRAMDisk();␊
363␉␊
364 // Disable rescan option by default␊
365 gEnableCDROMRescan = false;␊
366␉␊
367 // Enable it with Rescan=y in system config␊
368 if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {␊
369 gEnableCDROMRescan = true;␊
370 }␊
371␉␊
372 // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊
373 rescanPrompt = false;␊
374 if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊
375 gEnableCDROMRescan = promptForRescanOption();␊
376 }␊
377#endif␊
378␉␊
379#if DEBUG␊
380 printf(" Default: %x, ->gBootVolume: %x, ->part_no: %d ->flags: %x\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊
381 printf(" bt(0,0): %x, ->gBIOSBootVolume: %x, ->part_no: %d ->flags: %x\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊
382 pause();␊
383␉/* Results␊
384␉ Rescan found 1 HDD and bvCount=4␊
385␉ bvr: 836bc10, dev: 80, part: 4, flags: 4a, vis: 1␊
386␉ bvr: 836bce0, dev: 80, part: 3, flags: 4b, vis: 1␊
387␉ bvr: 836be90, dev: 80, part: 2, flags: 4, vis: 1␊
388␉ bvr: 836bf60, dev: 80, part: 1, flags: a, vis: 0␊
389␉ count: 3␊
390␉ ␊
391␉ foundPrimary and flags bvr1=a bvr2=4b␊
392␉ Default: 836bce0, ->biosdev: 80, ->part_no: 3 ->flags: 4b //booted partition␊
393␉ bt(0,0): 8262030, ->biosdev: 80, ->part_no: 3 ->flags: 4b //unknown pointer␊
394␉␊
395␉ */␊
396#endif␊
397␉␊
398␉␊
399␉␊
400 setBootGlobals(bvChain);␊
401␉␊
402 // Parse args, load and start kernel.␊
403 while (1) {␊
404 const char *val;␊
405 int len;␊
406 // int trycache;␊
407 long flags, cachetime, kerneltime, exttime, sleeptime, time;␊
408 int ret = -1;␊
409 void *binary = (void *)kLoadAddr;␊
410 bool tryresume;␊
411 bool tryresumedefault;␊
412 bool forceresume;␊
413␉␉␊
414 // additional variable for testing alternate kernel image locations on boot helper partitions.␊
415 char bootFileSpec[512];␊
416␉␉␊
417 // Initialize globals.␊
418␉␉␊
419 sysConfigValid = false;␊
420 gErrors = false;␊
421 trycache␉␉=␉1;␊
422␉␉␊
423 status = getBootOptions(firstRun);␊
424 firstRun = false;␊
425 if (status == -1) continue;␊
426␉␉␊
427 status = processBootOptions();␊
428 // Status==1 means to chainboot␊
429 if ( status == 1 ) break;␊
430 // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊
431 if ( status == -1 )␊
432 {␊
433␉␉␉// gBootVolume == NULL usually means the user hit escape.␊
434␉␉␉if(gBootVolume == NULL)␊
435␉␉␉{␊
436␉␉␉␉freeFilteredBVChain(bvChain);␊
437#ifndef OPTION_ROM␊
438␉␉␉␉if (gEnableCDROMRescan)␊
439␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊
440#endif␊
441␉␉␉␉␊
442␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
443␉␉␉␉setBootGlobals(bvChain);␊
444␉␉␉}␊
445#if DEBUG␊
446␉␉␉verbose("After rescan\n");␊
447␉␉␉verbose(" System: %x, ->biosdev: %x, ->part_no: %d ->flags: %x\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊
448␉␉␉verbose(" Booter: %x, ->biosdev: %x, ->part_no: %d ->flags: %x\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊
449␉␉␉// getc();␊
450#endif␊
451␉␉␉␊
452␉␉␉continue;␊
453 }␊
454␉␉␊
455␉␉␊
456␉␉// Find out which version mac os we're booting.␊
457␉␉getOSVersion(gMacOSVersion);␊
458␉␉␊
459␉␉if (platformCPUFeature(CPU_FEATURE_EM64T)) {␊
460␉␉␉archCpuType = CPU_TYPE_X86_64;␊
461␉␉} else {␊
462␉␉␉archCpuType = CPU_TYPE_I386;␊
463␉␉}␊
464␉␉if (getValueForKey(karch, &val, &len, &bootInfo->bootConfig)) {␊
465␉␉␉if (strncmp(val, "i386", 4) == 0) {␊
466␉␉␉␉archCpuType = CPU_TYPE_I386;␊
467␉␉␉}␊
468␉␉}␊
469␉␉␊
470␉␉// Notify modules that we are attempting to boot␊
471␉␉execute_hook("PreBoot", NULL, NULL, NULL, NULL);␊
472␊
473␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->bootConfig)) {␊
474␉␉␉tryresume = true;␊
475␉␉␉tryresumedefault = true;␊
476␉␉} else {␊
477␉␉␉tryresumedefault = false;␊
478␉␉}␊
479␉␉␊
480␉␉if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->bootConfig)) {␊
481␉␉␉forceresume = false;␊
482␉␉}␊
483␉␉␊
484␉␉if (forceresume) {␊
485␉␉␉tryresume = true;␊
486␉␉␉tryresumedefault = false;␊
487␉␉}␊
488␉␉␊
489␉␉while (tryresume) {␊
490␉␉␉const char *tmp;␊
491␉␉␉BVRef bvr;␊
492␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->bootConfig))␊
493␉␉␉␉val="/private/var/vm/sleepimage";␊
494␉␉␉␊
495␉␉␉// Do this first to be sure that root volume is mounted␊
496␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊
497␉␉␉␊
498␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊
499␉␉␉␉break;␊
500␉␉␉␊
501␉␉␉// Can't check if it was hibernation Wake=y is required␊
502␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊
503␉␉␉␉break;␊
504␉␉␉␊
505␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊
506␉␉␉␉break;␊
507␉␉␉␊
508␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊
509␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊
510␉␉␉␉break;␊
511␉␉␉}␊
512␉␉␉␊
513␉␉␉HibernateBoot((char *)val);␊
514␉␉␉break;␊
515␉␉}␊
516␉␉␊
517 // Reset cache name.␊
518 bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊
519␉␉␊
520 sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊
521␉␉␊
522 adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊
523␉␉␊
524 if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig) == true) {␊
525 strlcpy(gBootKernelCacheFile, val, len+1);␊
526 } else {␊
527␉␉␉if(gMacOSVersion[3] == '6') {␊
528␉␉␉␉sprintf(gBootKernelCacheFile, "%skernelcache_%s", kDefaultCachePathSnow, (archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64"); //, adler32);␊
529␉␉␉␉//Slice - TODO␊
530␉␉␉␉/*␊
531␉␉␉␉ - but the name is longer .adler32 and more...␊
532␉␉␉␉ kernelcache_i386.E102928C.qSs0␊
533␉␉␉␉ so will opendir and scan for some files␊
534␉␉␉␉*/ ␊
535␉␉␉␉char* name;␊
536␉␉␉␉long flagsC;␊
537␉␉␉␉long timeC;␊
538␉␉␉␉struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);␊
539␉␉␉␉while(readdir(cacheDir, (const char**)&name, &flagsC, &timeC) >= 0)␊
540␉␉␉␉{␊
541␉␉␉␉␉if(strcmp(&name[0], gBootKernelCacheFile) == 0) //?␊
542␉␉␉␉␉{␊
543␉␉␉␉␉␉//char* tmp = malloc(strlen(name) + 1);␊
544␉␉␉␉␉␉//strcpy(tmp, name);␊
545␉␉␉␉␉␉verbose("find kernelcache=%s\n", name);␊
546␉␉␉␉␉}␊
547␉␉␉␉}␊
548␉␉␉␉␉␉␊
549␉␉␉}␊
550␉␉␉else //if(gMacOSVersion[3] == '5')␊
551␉␉␉␉sprintf(gBootKernelCacheFile, "%skernelcache", kDefaultCachePath);␊
552 }␊
553␉␉␊
554 // Check for cache file.␊
555 trycache = (((gBootMode & kBootModeSafe) == 0) &&␊
556 !gOverrideKernel &&␊
557 (gBootFileType == kBlockDeviceType) &&␊
558 (gMKextName[0] == '\0') &&␊
559 (gBootKernelCacheFile[0] != '\0')); // &&␊
560//␉␉␉␉␉(gMacOSVersion[3] != '4'));␊
561␉␉verbose("Try cache %s %s\n", gBootKernelCacheFile, trycache?"YES":"NO");␊
562␉␉␊
563␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊
564␉␉␊
565 if (trycache) do {␊
566␉␉␉␊
567 // if we haven't found the kernel yet, don't use the cache␊
568 ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊
569 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊
570 trycache = 0;␊
571 break;␊
572 }␊
573 ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊
574 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊
575 || (cachetime < kerneltime)) {␊
576 trycache = 0;␊
577 verbose("Try cache failed\n");␊
578 break;␊
579 }␊
580 ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊
581 if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊
582 && (cachetime < exttime)) {␊
583 trycache = 0;␊
584 break;␊
585 }␊
586 if (kerneltime > exttime) {␊
587 exttime = kerneltime;␊
588 }␊
589 if (cachetime != (exttime + 1)) {␊
590 trycache = 0;␊
591 break;␊
592 }␊
593 } while (0);␊
594␉␉␊
595 do {␊
596 if (trycache) {␊
597 bootFile = gBootKernelCacheFile;␊
598 verbose("Loading kernel cache %s\n", bootFile);␊
599 ret = LoadFile(bootFile);␊
600 binary = (void *)kLoadAddr;␊
601 if (ret >= 0) {␊
602 break;␊
603 }␊
604 }␊
605 bootFile = bootInfo->bootFile;␊
606␉␉␉␊
607 // Try to load kernel image from alternate locations on boot helper partitions.␊
608 sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊
609 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
610 ␉ ␉ if (ret == -1)␊
611 ␉ ␉ {␊
612␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊
613␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
614␉␉␉␉if (ret == -1)␊
615␉␉␉␉{␊
616␉␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊
617␉␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
618␉␉␉␉␉if (ret == -1)␊
619␉␉␉␉␉{␊
620␉␉␉␉␉␉// Not found any alternate locations, using the original kernel image path.␊
621␉␉␉␉␉␉strcpy(bootFileSpec, bootFile);␊
622␉␉␉␉␉}␊
623␉␉␉␉}␊
624 }␊
625␉␉␉␊
626 verbose("Loading kernel %s\n", bootFileSpec);␊
627 ret = LoadThinFatFile(bootFileSpec, &binary);␊
628 if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊
629 {␊
630␉␉␉␉archCpuType = CPU_TYPE_I386;␊
631␉␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊
632 }␊
633␉␉␉␊
634 } while (0);␊
635␉␉␊
636 clearActivityIndicator();␊
637#if DEBUG␊
638 printf("Pausing...");␊
639 sleep(8);␊
640#endif␊
641␉␉␊
642 if (ret <= 0) {␊
643␉␉␉printf("Can't find %s\n", bootFile);␊
644␉␉␉␊
645␉␉␉sleep(1);␊
646#ifndef OPTION_ROM␊
647 if (gBootFileType == kNetworkDeviceType) {␊
648 // Return control back to PXE. Don't unload PXE base code.␊
649 gUnloadPXEOnExit = false;␊
650 break;␊
651 }␊
652#endif␊
653 } else {␊
654 /* Won't return if successful. */␊
655␉␉␉// Notify modules that ExecKernel is about to be called␊
656 ret = ExecKernel(binary);␊
657 }␊
658␊
659 } /* while(1) */␊
660 ␊
661 // chainboot␊
662 if (status==1) {␊
663␉␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊
664␉␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊
665␉␉}␊
666 }␊
667#ifndef OPTION_ROM␊
668 if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊
669␉␉nbpUnloadBaseCode();␊
670 }␊
671#endif␊
672}␊
673␊
674/*!␊
675 Selects a new BIOS device, taking care to update the global state appropriately.␊
676 */␊
677/*␊
678 static void selectBiosDevice(void)␊
679 {␊
680 struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊
681 CacheReset();␊
682 diskFreeMap(oldMap);␊
683 oldMap = NULL;␊
684 ␊
685 int dev = selectAlternateBootDevice(gBIOSDev);␊
686 ␊
687 BVRef bvchain = scanBootVolumes(dev, 0);␊
688 BVRef bootVol = selectBootVolume(bvchain);␊
689 gBootVolume = bootVol;␊
690 setRootVolume(bootVol);␊
691 gBIOSDev = dev;␊
692 }␊
693 */␊
694␊
695static bool getOSVersion(char *str)␊
696{␊
697␉bool valid = false;␊
698//␉config_file_t systemVersion;␊
699␉const char *val;␊
700␉int len;␊
701␉␊
702␉if (!loadConfigFile("/System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊
703␉{␊
704␉␉valid = true;␊
705␉}␊
706␉else if (!loadConfigFile("/System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊
707␉{␊
708␉␉valid = true;␊
709␉}␊
710␉␊
711␉if (valid)␊
712␉{␊
713␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion))␊
714␉␉{␊
715␉␉␉// getValueForKey uses const char for val␊
716␉␉␉// so copy it and trim␊
717␉␉␉*str = '\0';␊
718␉␉␉strncat(str, val, MIN(len, 4));␊
719␉␉}␊
720␉␉else␊
721␉␉␉valid = false;␊
722␉}␊
723␉␊
724␉return valid;␊
725}␊
726␊
727#define BASE 65521L /* largest prime smaller than 65536 */␊
728#define NMAX 5000␊
729// NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊
730␊
731#define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊
732#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊
733#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊
734#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊
735#define DO16(buf) DO8(buf,0); DO8(buf,8);␊
736/*␊
737unsigned long Adler32(unsigned char *buf, long len)␊
738{␊
739 unsigned long s1 = 1; // adler & 0xffff;␊
740 unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊
741 unsigned long result;␊
742 int k;␊
743␉␊
744 while (len > 0) {␊
745 k = len < NMAX ? len : NMAX;␊
746 len -= k;␊
747 while (k >= 16) {␊
748 DO16(buf);␊
749 buf += 16;␊
750 k -= 16;␊
751 }␊
752 if (k != 0) do {␊
753 s1 += *buf++;␊
754 s2 += s1;␊
755 } while (--k);␊
756 s1 %= BASE;␊
757 s2 %= BASE;␊
758 }␊
759 result = (s2 << 16) | s1;␊
760 return OSSwapHostToBigInt32(result);␊
761}␊
762*/

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