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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␊
117//==========================================================================␊
118// Zero the BSS.␊
119␊
120static void zeroBSS(void)␊
121{␊
122␉extern char _DATA__bss__begin, _DATA__bss__end;␊
123␉extern char _DATA__common__begin, _DATA__common__end;␊
124␉␊
125␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊
126␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊
127}␊
128␊
129//==========================================================================␊
130// Malloc error function␊
131␊
132static void malloc_error(char *addr, size_t size, const char *file, int line)␊
133{␊
134␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊
135}␊
136␊
137//==========================================================================␊
138//Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊
139//␊
140void initialize_runtime(void)␊
141{␊
142␉zeroBSS();␊
143␉malloc_init(0, 0, 0, malloc_error);␊
144}␊
145␊
146//==========================================================================␊
147// execKernel - Load the kernel image (mach-o) and jump to its entry point.␊
148␊
149int ExecKernel(void *binary)␊
150{␊
151 entry_t kernelEntry;␊
152 int ret;␊
153␉␊
154 bootArgs->kaddr = bootArgs->ksize = 0;␊
155␉execute_hook("ExecKernel", (void*)binary, NULL, NULL, NULL);␊
156␊
157 ret = DecodeKernel(binary,␊
158 &kernelEntry,␊
159 (char **) &bootArgs->kaddr,␊
160 (int *)&bootArgs->ksize );␊
161␊
162 if ( ret != 0 )␊
163 return ret;␊
164 // Reserve space for boot args␊
165 reserveKernBootStruct();␊
166␉␊
167 // Load boot drivers from the specifed root path.␊
168␉execute_hook("DecodedKernel", (void*)binary, NULL, NULL, NULL);␊
169␊
170␉␊
171␉setupFakeEfi();␊
172␉␊
173 if (!gHaveKernelCache) {␊
174␉␉LoadDrivers("/");␊
175 }␊
176␉␊
177 clearActivityIndicator();␊
178␉␊
179 if (gErrors) {␊
180 msglog("Errors encountered while starting up the computer.\n");␊
181 // printf("Pausing %d seconds...\n", kBootErrorTimeout);␊
182 // sleep(kBootErrorTimeout);␊
183 }␊
184␉␊
185␉md0Ramdisk();␊
186␉␊
187 verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "i386" : "x86_64");␊
188#ifndef OPTION_ROM␊
189 // Cleanup the PXE base code.␊
190␉␊
191 if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊
192␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊
193 {␊
194 ␉verbose("nbpUnloadBaseCode error %d\n", (int) ret);␊
195 sleep(2);␊
196 }␊
197 }␊
198#endif ␊
199 bool dummyVal;␊
200␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal)␊
201␉{␊
202␉␉printf("Press any key to continue...");␊
203␉␉getc();␊
204␉}␊
205␉␉␊
206␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␉// Notify modules that the kernel is about to be started␊
207␊
208␉if (bootArgs->Video.v_display == VGA_TEXT_MODE)␊
209␉{␊
210␉␉setVideoMode( GRAPHICS_MODE, 0 );␊
211␉␉// Draw gray screen. NOTE: no boot image, that's in the gui module␊
212#ifndef OPTION_ROM␊
213␉␉if(!gVerboseMode) drawColorRectangle(0, 0, DEFAULT_SCREEN_WIDTH, DEFAULT_SCREEN_HEIGHT, 0x01); //Slice -???␊
214#endif␊
215␉}␊
216␊
217␉␊
218␉setupBooterLog();␊
219␉␊
220 finalizeBootStruct();␊
221 ␉␊
222␉// Jump to kernel's entry point. There's no going back now.␊
223 startprog( kernelEntry, bootArgs );␊
224␉␊
225 // Not reached␊
226␉␊
227 return 0;␊
228}␊
229␊
230//==========================================================================␊
231// This is the entrypoint from real-mode which functions exactly as it did␊
232// before. Multiboot does its own runtime initialization, does some of its␊
233// own things, and then calls common_boot.␊
234void boot(int biosdev)␊
235{␊
236␉initialize_runtime();␊
237␉// Enable A20 gate before accessing memory above 1Mb.␊
238␉enableA20();␊
239␉common_boot(biosdev);␊
240}␊
241␊
242//==========================================================================␊
243// The 'main' function for the booter. Called by boot0 when booting␊
244// from a block device, or by the network booter.␊
245//␊
246// arguments:␊
247// biosdev - Value passed from boot1/NBP to specify the device␊
248// that the booter was loaded from.␊
249//␊
250// If biosdev is kBIOSDevNetwork, then this function will return if␊
251// booting was unsuccessful. This allows the PXE firmware to try the␊
252// next boot device on its list.␊
253void common_boot(int biosdev)␊
254{␊
255 int status;␊
256␉int␉␉trycache;␊
257 char *bootFile;␊
258 unsigned long adler32;␊
259 bool quiet;␊
260 bool firstRun = true;␊
261 bool instantMenu;␊
262#ifndef OPTION_ROM␊
263 bool rescanPrompt;␊
264#endif␊
265 unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊
266 unsigned int denyBVFlags = kBVFlagEFISystem;␊
267␉␊
268#ifndef OPTION_ROM␊
269 // Set reminder to unload the PXE base code. Neglect to unload␊
270 // the base code will result in a hang or kernel panic.␊
271 gUnloadPXEOnExit = true;␊
272#endif␊
273␉␊
274 // Record the device that the booter was loaded from.␊
275 gBIOSDev = biosdev & kBIOSDevMask; // 0xff␊
276␉␊
277 // Initialize boot info structure.␊
278 initKernBootStruct();␊
279␉␊
280␉initBooterLog();␊
281␉␊
282 // Setup VGA text mode.␊
283 // Not sure if it is safe to call setVideoMode() before the␊
284 // config table has been loaded. Call video_mode() instead.␊
285 video_mode( 2 ); // 80x25 mono text mode.␊
286␉␊
287 // Scan and record the system's hardware information.␊
288 scan_platform();␊
289␊
290 // First get info for boot volume.␊
291 scanBootVolumes(gBIOSDev, 0);␊
292 bvChain = getBVChainForBIOSDev(gBIOSDev);␊
293␉␊
294#if DEBUG␉␊
295 printf("get bvChain dev=%02x type=%02x part_no=%d\n", bvChain->biosdev, bvChain->type, bvChain->part_no); //dev=0x80 - flash-stick␊
296//␉␉getc();␊
297#endif␊
298␉␊
299 setBootGlobals(bvChain);␊
300␉␊
301 // Load boot.plist config file␊
302 status = loadSystemConfig(&bootInfo->bootConfig);␊
303␊
304 if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊
305 gBootMode |= kBootModeQuiet;␊
306 }␊
307␉␊
308 // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊
309 if (getBoolForKey(kInsantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {␊
310 firstRun = false;␊
311 }␊
312␉␊
313#ifndef OPTION_ROM␊
314␉// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊
315 if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {␊
316 gScanSingleDrive = true;␊
317 }␊
318␉␊
319␉// Create a list of partitions on device(s).␊
320 if (gScanSingleDrive)␊
321␉{␊
322␉␉scanBootVolumes(gBIOSDev, &bvCount);␊
323 } ␊
324␉else ␊
325#endif␊
326␉{␊
327␉␉scanDisks(gBIOSDev, &bvCount);␊
328 }␊
329␉␊
330␉// Create a separated bvr chain using the specified filters.␊
331 bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
332␉gBootVolume = selectBootVolume(bvChain);␊
333␉␊
334#if DEBUG␉␊
335 printf("separated bvChain dev=%02x type=%02x part_no=%d\n", bvChain->biosdev, bvChain->type, bvChain->part_no); //dev=0x81 - HDD␊
336␉pause();␊
337#endif␊
338␉␊
339␉// Intialize module system␊
340␉if(init_module_system())␊
341␉{␊
342#if DEBUG␉␊
343␉␉printf("begin load_all_modules\n");␊
344//␉␉pause();␊
345#endif␊
346␉␉␊
347␉␉load_all_modules();␊
348␉}␊
349␉␊
350␉execute_hook("ModulesLoaded", NULL, NULL, NULL, NULL);␊
351#if DEBUG␊
352 printf("ModulesLoaded\n");␊
353//␉pause();␊
354#endif␊
355␉␊
356␉␊
357#ifndef OPTION_ROM␊
358 // Loading preboot ramdisk if exists.␊
359 loadPrebootRAMDisk();␊
360␉␊
361 // Disable rescan option by default␊
362 gEnableCDROMRescan = false;␊
363␉␊
364 // Enable it with Rescan=y in system config␊
365 if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {␊
366 gEnableCDROMRescan = true;␊
367 }␊
368␉␊
369 // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊
370 rescanPrompt = false;␊
371 if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊
372 gEnableCDROMRescan = promptForRescanOption();␊
373 }␊
374#endif␊
375␉␊
376#if DEBUG␊
377 printf(" Default: %x, ->gBootVolume: %x, ->part_no: %d ->flags: %x\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊
378 printf(" bt(0,0): %x, ->gBIOSBootVolume: %x, ->part_no: %d ->flags: %x\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊
379 pause();␊
380␉/* Results␊
381␉ Rescan found 1 HDD and bvCount=4␊
382␉ bvr: 836bc10, dev: 80, part: 4, flags: 4a, vis: 1␊
383␉ bvr: 836bce0, dev: 80, part: 3, flags: 4b, vis: 1␊
384␉ bvr: 836be90, dev: 80, part: 2, flags: 4, vis: 1␊
385␉ bvr: 836bf60, dev: 80, part: 1, flags: a, vis: 0␊
386␉ count: 3␊
387␉ ␊
388␉ foundPrimary and flags bvr1=a bvr2=4b␊
389␉ Default: 836bce0, ->biosdev: 80, ->part_no: 3 ->flags: 4b //booted partition␊
390␉ bt(0,0): 8262030, ->biosdev: 80, ->part_no: 3 ->flags: 4b //unknown pointer␊
391␉␊
392␉ */␊
393#endif␊
394␉␊
395␉␊
396␉␊
397 setBootGlobals(bvChain);␊
398␉␊
399 // Parse args, load and start kernel.␊
400 while (1) {␊
401 const char *val;␊
402 int len;␊
403 // int trycache;␊
404 long flags, cachetime, kerneltime, exttime, sleeptime, time;␊
405 int ret = -1;␊
406 void *binary = (void *)kLoadAddr;␊
407 bool tryresume;␊
408 bool tryresumedefault;␊
409 bool forceresume;␊
410␉␉␊
411 // additional variable for testing alternate kernel image locations on boot helper partitions.␊
412 char bootFileSpec[512];␊
413␉␉␊
414 // Initialize globals.␊
415␉␉␊
416 sysConfigValid = false;␊
417 gErrors = false;␊
418 trycache␉␉=␉1;␊
419␉␉␊
420 status = getBootOptions(firstRun);␊
421 firstRun = false;␊
422 if (status == -1) continue;␊
423␉␉␊
424 status = processBootOptions();␊
425 // Status==1 means to chainboot␊
426 if ( status == 1 ) break;␊
427 // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊
428 if ( status == -1 )␊
429 {␊
430␉␉␉// gBootVolume == NULL usually means the user hit escape.␊
431␉␉␉if(gBootVolume == NULL)␊
432␉␉␉{␊
433␉␉␉␉freeFilteredBVChain(bvChain);␊
434#ifndef OPTION_ROM␊
435␉␉␉␉if (gEnableCDROMRescan)␊
436␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊
437#endif␊
438␉␉␉␉␊
439␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
440␉␉␉␉setBootGlobals(bvChain);␊
441␉␉␉}␊
442#if DEBUG␊
443␉␉␉verbose("After rescan\n");␊
444␉␉␉verbose(" System: %x, ->biosdev: %x, ->part_no: %d ->flags: %x\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊
445␉␉␉verbose(" Booter: %x, ->biosdev: %x, ->part_no: %d ->flags: %x\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊
446␉␉␉// getc();␊
447#endif␊
448␉␉␉␊
449␉␉␉continue;␊
450 }␊
451␉␉␊
452␉␉␊
453␉␉// Find out which version mac os we're booting.␊
454␉␉getOSVersion(gMacOSVersion);␊
455␉␉␊
456␉␉if (platformCPUFeature(CPU_FEATURE_EM64T)) {␊
457␉␉␉archCpuType = CPU_TYPE_X86_64;␊
458␉␉} else {␊
459␉␉␉archCpuType = CPU_TYPE_I386;␊
460␉␉}␊
461␉␉if (getValueForKey(karch, &val, &len, &bootInfo->bootConfig)) {␊
462␉␉␉if (strncmp(val, "i386", 4) == 0) {␊
463␉␉␉␉archCpuType = CPU_TYPE_I386;␊
464␉␉␉}␊
465␉␉}␊
466␉␉␊
467␉␉// Notify modules that we are attempting to boot␊
468␉␉execute_hook("PreBoot", NULL, NULL, NULL, NULL);␊
469␊
470␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->bootConfig)) {␊
471␉␉␉tryresume = true;␊
472␉␉␉tryresumedefault = true;␊
473␉␉} else {␊
474␉␉␉tryresumedefault = false;␊
475␉␉}␊
476␉␉␊
477␉␉if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->bootConfig)) {␊
478␉␉␉forceresume = false;␊
479␉␉}␊
480␉␉␊
481␉␉if (forceresume) {␊
482␉␉␉tryresume = true;␊
483␉␉␉tryresumedefault = false;␊
484␉␉}␊
485␉␉␊
486␉␉while (tryresume) {␊
487␉␉␉const char *tmp;␊
488␉␉␉BVRef bvr;␊
489␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->bootConfig))␊
490␉␉␉␉val="/private/var/vm/sleepimage";␊
491␉␉␉␊
492␉␉␉// Do this first to be sure that root volume is mounted␊
493␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊
494␉␉␉␊
495␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊
496␉␉␉␉break;␊
497␉␉␉␊
498␉␉␉// Can't check if it was hibernation Wake=y is required␊
499␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊
500␉␉␉␉break;␊
501␉␉␉␊
502␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊
503␉␉␉␉break;␊
504␉␉␉␊
505␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊
506␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊
507␉␉␉␉break;␊
508␉␉␉}␊
509␉␉␉␊
510␉␉␉HibernateBoot((char *)val);␊
511␉␉␉break;␊
512␉␉}␊
513␉␉␊
514 // Reset cache name.␊
515 bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊
516␉␉␊
517 sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊
518␉␉␊
519 adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊
520␉␉␊
521 if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig) == true) {␊
522 strlcpy(gBootKernelCacheFile, val, len+1);␊
523 } else {␊
524␉␉␉if(gMacOSVersion[3] == '6') {␊
525␉␉␉␉sprintf(gBootKernelCacheFile, "kernelcache_%s", /*kDefaultCachePathSnow,*/ (archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64"); //, adler32);␊
526␉␉␉␉msglog("search for kernelcache %s\n", gBootKernelCacheFile);␊
527␉␉␉␉int lnam = sizeof(gBootKernelCacheFile) + 9; //with adler32␊
528␉␉␉␉//Slice - TODO␊
529␉␉␉␉/*␊
530␉␉␉␉ - but the name is longer .adler32 and more...␊
531␉␉␉␉ kernelcache_i386.E102928C.qSs0␊
532␉␉␉␉ so will opendir and scan for some files␊
533␉␉␉␉*/ ␊
534␉␉␉␉char* name;␊
535␉␉␉␉long flagsC;␊
536␉␉␉␉long timeC;␊
537␉␉␉␉struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);␊
538␉␉␉␉while(readdir(cacheDir, (const char**)&name, &flagsC, &timeC) >= 0)␊
539␉␉␉␉{␊
540␉␉␉␉␉if(strstr(name, gBootKernelCacheFile)) //?␊
541␉␉␉␉␉{␊
542␉␉␉␉␉␉if(name[lnam] == '.') continue;␊
543␉␉␉␉␉␉//char* tmp = malloc(strlen(name) + 1);␊
544␉␉␉␉␉␉sprintf(gBootKernelCacheFile, "%s%s", kDefaultCachePathSnow, name);␊
545␉␉␉␉␉␉verbose("find kernelcache=%s\n", gBootKernelCacheFile);␊
546␉␉␉␉␉␉break;␊
547␉␉␉␉␉}␊
548␉␉␉␉}␊
549␉␉//␉␉close(cacheDir);␊
550␉␉␉␉␉␉␊
551␉␉␉}␊
552␉␉␉else //if(gMacOSVersion[3] == '5')␊
553␉␉␉␉sprintf(gBootKernelCacheFile, "%skernelcache", kDefaultCachePath);␊
554 }␊
555␉␉␊
556 // Check for cache file.␊
557 trycache = (((gBootMode & kBootModeSafe) == 0) &&␊
558 !gOverrideKernel &&␊
559 (gBootFileType == kBlockDeviceType) &&␊
560 (gMKextName[0] == '\0') &&␊
561 (gBootKernelCacheFile[0] != '\0')); // &&␊
562//␉␉␉␉␉(gMacOSVersion[3] != '4'));␊
563␉␉verbose("Try cache %s %s\n", gBootKernelCacheFile, trycache?"YES":"NO");␊
564␉␉␊
565␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊
566␉␉␊
567 if (trycache) do {␊
568␉␉␉␊
569 // if we haven't found the kernel yet, don't use the cache␊
570 ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊
571 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊
572 trycache = 0;␊
573 break;␊
574 }␊
575 ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊
576 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊
577 || (cachetime < kerneltime)) {␊
578 trycache = 0;␊
579 verbose("Try cache failed\n");␊
580 break;␊
581 }␊
582 ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊
583 if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊
584 && (cachetime < exttime)) {␊
585 trycache = 0;␊
586 break;␊
587 }␊
588 if (kerneltime > exttime) {␊
589 exttime = kerneltime;␊
590 }␊
591 if (cachetime != (exttime + 1)) {␊
592 trycache = 0;␊
593 break;␊
594 }␊
595 } while (0);␊
596␉␉␊
597 do {␊
598 if (trycache) {␊
599 bootFile = gBootKernelCacheFile;␊
600 verbose("Loading kernel cache %s\n", bootFile);␊
601 ret = LoadFile(bootFile);␊
602 binary = (void *)kLoadAddr;␊
603 if (ret >= 0) {␊
604 break;␊
605 }␊
606 }␊
607 bootFile = bootInfo->bootFile;␊
608␉␉␉␊
609 // Try to load kernel image from alternate locations on boot helper partitions.␊
610 sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊
611 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
612 ␉ ␉ if (ret == -1)␊
613 ␉ ␉ {␊
614␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊
615␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
616␉␉␉␉if (ret == -1)␊
617␉␉␉␉{␊
618␉␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊
619␉␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
620␉␉␉␉␉if (ret == -1)␊
621␉␉␉␉␉{␊
622␉␉␉␉␉␉// Not found any alternate locations, using the original kernel image path.␊
623␉␉␉␉␉␉strcpy(bootFileSpec, bootFile);␊
624␉␉␉␉␉}␊
625␉␉␉␉}␊
626 }␊
627␉␉␉␊
628 verbose("Loading kernel %s\n", bootFileSpec);␊
629 ret = LoadThinFatFile(bootFileSpec, &binary);␊
630 if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊
631 {␊
632␉␉␉␉archCpuType = CPU_TYPE_I386;␊
633␉␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊
634 }␊
635␉␉␉␊
636 } while (0);␊
637␉␉␊
638 clearActivityIndicator();␊
639#if DEBUG␊
640 printf("Pausing...");␊
641 sleep(8);␊
642#endif␊
643␉␉␊
644 if (ret <= 0) {␊
645␉␉␉printf("Can't find %s\n", bootFile);␊
646␉␉␉␊
647␉␉␉sleep(1);␊
648#ifndef OPTION_ROM␊
649 if (gBootFileType == kNetworkDeviceType) {␊
650 // Return control back to PXE. Don't unload PXE base code.␊
651 gUnloadPXEOnExit = false;␊
652 break;␊
653 }␊
654#endif␊
655 } else {␊
656 /* Won't return if successful. */␊
657␉␉␉// Notify modules that ExecKernel is about to be called␊
658 ret = ExecKernel(binary);␊
659 }␊
660␊
661 } /* while(1) */␊
662 ␊
663 // chainboot␊
664 if (status==1) {␊
665␉␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊
666␉␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊
667␉␉}␊
668 }␊
669#ifndef OPTION_ROM␊
670 if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊
671␉␉nbpUnloadBaseCode();␊
672 }␊
673#endif␊
674}␊
675␊
676/*!␊
677 Selects a new BIOS device, taking care to update the global state appropriately.␊
678 */␊
679/*␊
680 static void selectBiosDevice(void)␊
681 {␊
682 struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊
683 CacheReset();␊
684 diskFreeMap(oldMap);␊
685 oldMap = NULL;␊
686 ␊
687 int dev = selectAlternateBootDevice(gBIOSDev);␊
688 ␊
689 BVRef bvchain = scanBootVolumes(dev, 0);␊
690 BVRef bootVol = selectBootVolume(bvchain);␊
691 gBootVolume = bootVol;␊
692 setRootVolume(bootVol);␊
693 gBIOSDev = dev;␊
694 }␊
695 */␊
696␊
697static bool getOSVersion(char *str)␊
698{␊
699␉bool valid = false;␊
700//␉config_file_t systemVersion;␊
701␉const char *val;␊
702␉int len;␊
703␉msglog("Address loadConfigFile=%x bootInfo=%x\n", &loadConfigFile, &bootInfo);␊
704␉if (!loadConfigFile("/System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊
705␉{␊
706␉␉valid = true;␊
707␉}␊
708␉else if (!loadConfigFile("/System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊
709␉{␊
710␉␉valid = true;␊
711␉}␊
712␉␊
713␉if (valid)␊
714␉{␊
715␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion))␊
716␉␉{␊
717␉␉␉// getValueForKey uses const char for val␊
718␉␉␉// so copy it and trim␊
719␉␉␉*str = '\0';␊
720␉␉␉strncat(str, val, MIN(len, 4));␊
721␉␉}␊
722␉␉else␊
723␉␉␉valid = false;␊
724␉}␊
725␉␊
726␉return valid;␊
727}␊
728␊
729#define BASE 65521L /* largest prime smaller than 65536 */␊
730#define NMAX 5000␊
731// NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊
732␊
733#define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊
734#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊
735#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊
736#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊
737#define DO16(buf) DO8(buf,0); DO8(buf,8);␊
738/*␊
739unsigned long Adler32(unsigned char *buf, long len)␊
740{␊
741 unsigned long s1 = 1; // adler & 0xffff;␊
742 unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊
743 unsigned long result;␊
744 int k;␊
745␉␊
746 while (len > 0) {␊
747 k = len < NMAX ? len : NMAX;␊
748 len -= k;␊
749 while (k >= 16) {␊
750 DO16(buf);␊
751 buf += 16;␊
752 k -= 16;␊
753 }␊
754 if (k != 0) do {␊
755 s1 += *buf++;␊
756 s2 += s1;␊
757 } while (--k);␊
758 s1 %= BASE;␊
759 s2 %= BASE;␊
760 }␊
761 result = (s2 << 16) | s1;␊
762 return OSSwapHostToBigInt32(result);␊
763}␊
764*/

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