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

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