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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 "platform.h"␊
60#include "graphics.h"␊
61#include "pci.h"␊
62␊
63#include "modules.h"␊
64␊
65#define DEBUG 0␊
66␊
67long gBootMode; /* defaults to 0 == kBootModeNormal */␊
68bool gOverrideKernel;␊
69static char gBootKernelCacheFile[512];␊
70static char gCacheNameAdler[64 + 256];␊
71char *gPlatformName = gCacheNameAdler;␊
72char gRootDevice[512];␊
73char gMKextName[512];␊
74char gMacOSVersion[8];␊
75void *gRootPCIDev;␊
76void *gPlatform;␊
77void *gBootOrder;␊
78void *gSMBIOS;␊
79int gDualLink;␊
80#ifndef OPTION_ROM␊
81bool gEnableCDROMRescan;␊
82bool gScanSingleDrive;␊
83#endif␊
84config_file_t systemVersion;␉␉// system.plist of booting partition␊
85␊
86␊
87int bvCount = 0;␊
88//int␉menucount = 0;␊
89int gDeviceCount = 0; ␊
90␊
91BVRef bvr;␊
92BVRef menuBVR;␊
93BVRef bvChain;␊
94␊
95//static void selectBiosDevice(void);␊
96//static unsigned long Adler32(unsigned char *buffer, long length);␊
97static bool getOSVersion(char *str);␊
98␊
99#ifndef OPTION_ROM␊
100static bool gUnloadPXEOnExit = false;␊
101#endif␊
102␊
103/*␊
104 * How long to wait (in seconds) to load the␊
105 * kernel after displaying the "boot:" prompt.␊
106 */␊
107#define kBootErrorTimeout 5␊
108␊
109/*␊
110 * Default path to kernel cache file␊
111 */␊
112 //Slice - first one for Leopard␊
113#define kDefaultCachePath "/System/Library/Caches/com.apple.kernelcaches/"␊
114#define kDefaultCachePathSnow "/System/Library/Caches/com.apple.kext.caches/Startup/"␊
115//#define kDefaultCachePathTiger "/System/Library/Extensions.kextcache"␊
116//file://localhost/System/Library/Extensions.kextcache␊
117␊
118␊
119␊
120//==========================================================================␊
121// Zero the BSS.␊
122␊
123static void zeroBSS(void)␊
124{␊
125␉extern char _DATA__bss__begin, _DATA__bss__end;␊
126␉extern char _DATA__common__begin, _DATA__common__end;␊
127␉␊
128␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊
129␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊
130}␊
131␊
132//==========================================================================␊
133// Malloc error function␊
134␊
135static void malloc_error(char *addr, size_t size, const char *file, int line)␊
136{␊
137␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊
138}␊
139␊
140//==========================================================================␊
141//Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊
142//␊
143void initialize_runtime(void)␊
144{␊
145␉zeroBSS();␊
146␉malloc_init(0, 0, 0, malloc_error);␊
147}␊
148␊
149//==========================================================================␊
150// execKernel - Load the kernel image (mach-o) and jump to its entry point.␊
151␊
152int ExecKernel(void *binary)␊
153{␊
154 entry_t kernelEntry;␊
155 int ret;␊
156␉␊
157 bootArgs->kaddr = bootArgs->ksize = 0;␊
158␉execute_hook("ExecKernel", (void*)binary, NULL, NULL, NULL);␊
159␊
160 ret = DecodeKernel(binary,␊
161 &kernelEntry,␊
162 (char **) &bootArgs->kaddr,␊
163 (int *)&bootArgs->ksize );␊
164␊
165 if ( ret != 0 )␊
166 return ret;␊
167 // Reserve space for boot args␊
168 reserveKernBootStruct();␊
169␉␊
170 // Load boot drivers from the specifed root path.␊
171␉execute_hook("DecodedKernel", (void*)binary, NULL, NULL, NULL);␊
172␊
173␉␊
174␉setupFakeEfi();␊
175␉␊
176 if (!gHaveKernelCache) {␊
177␉␉LoadDrivers("/");␊
178 }␊
179␉␊
180 clearActivityIndicator();␊
181␉␊
182 if (gErrors) {␊
183 msglog("Errors encountered while starting up the computer.\n");␊
184 // printf("Pausing %d seconds...\n", kBootErrorTimeout);␊
185 // sleep(kBootErrorTimeout);␊
186 }␊
187␉␊
188␉md0Ramdisk();␊
189␉␊
190 verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "i386" : "x86_64");␊
191#ifndef OPTION_ROM␊
192 // Cleanup the PXE base code.␊
193␉␊
194 if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊
195␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊
196 {␊
197 ␉verbose("nbpUnloadBaseCode error %d\n", (int) ret);␊
198 sleep(2);␊
199 }␊
200 }␊
201#endif ␊
202 bool dummyVal;␊
203␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal)␊
204␉{␊
205␉␉printf("Press any key to continue...");␊
206␉␉getc();␊
207␉}␊
208␉␉␊
209␉if (bootArgs->Video.v_display == VGA_TEXT_MODE)␊
210␉{␊
211␉␉setVideoMode( GRAPHICS_MODE, 0 );␊
212␉␉// Draw gray screen. NOTE: no boot image, that's in the gui module␊
213#ifndef OPTION_ROM␊
214␉␉if(!gVerboseMode) drawColorRectangle(0, 0, DEFAULT_SCREEN_WIDTH, DEFAULT_SCREEN_HEIGHT, 0x01); //Slice -???␊
215#endif␊
216␉}␊
217␊
218␉␊
219␉setupBooterLog();␊
220␉␊
221 finalizeBootStruct();␊
222 ␉␊
223␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␉// Notify modules that the kernel is about to be started␊
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 if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊
307 gBootMode |= kBootModeQuiet;␊
308 }␊
309 // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊
310 if (getBoolForKey(kInsantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {␊
311 firstRun = false;␊
312 }␊
313␉␊
314#ifndef OPTION_ROM␊
315␉// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊
316 if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {␊
317 gScanSingleDrive = true;␊
318 }␊
319␉␊
320␉// Create a list of partitions on device(s).␊
321 if (gScanSingleDrive)␊
322␉{␊
323␉␉scanBootVolumes(gBIOSDev, &bvCount);␊
324 } ␊
325␉else ␊
326#endif␊
327␉{␊
328␉␉scanDisks(gBIOSDev, &bvCount);␊
329 }␊
330␉␊
331␉// Create a separated bvr chain using the specified filters.␊
332 bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
333␉gBootVolume = selectBootVolume(bvChain);␊
334␉␊
335#if DEBUG␉␊
336 printf("separated bvChain dev=%02x type=%02x part_no=%d\n", bvChain->biosdev, bvChain->type, bvChain->part_no); //dev=0x81 - HDD␊
337␉pause();␊
338#endif␊
339␉␊
340␉// Intialize module system␊
341␉if(init_module_system())␊
342␉{␊
343#if DEBUG␉␊
344␉␉printf("begin load_all_modules\n");␊
345␉␉pause();␊
346#endif␊
347␉␉␊
348␉␉load_all_modules();␊
349␉}␊
350␉␊
351␉execute_hook("ModulesLoaded", NULL, NULL, NULL, NULL);␊
352#if DEBUG␊
353 printf("ModulesLoaded\n");␊
354␉pause();␊
355#endif␊
356␉␊
357␉␊
358#ifndef OPTION_ROM␊
359 // Loading preboot ramdisk if exists.␊
360 loadPrebootRAMDisk();␊
361␉␊
362 // Disable rescan option by default␊
363 gEnableCDROMRescan = false;␊
364␉␊
365 // Enable it with Rescan=y in system config␊
366 if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {␊
367 gEnableCDROMRescan = true;␊
368 }␊
369␉␊
370 // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊
371 rescanPrompt = false;␊
372 if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊
373 gEnableCDROMRescan = promptForRescanOption();␊
374 }␊
375#endif␊
376␉␊
377#if DEBUG␊
378 printf(" Default: %x, ->gBootVolume: %x, ->part_no: %d ->flags: %x\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊
379 printf(" bt(0,0): %x, ->gBIOSBootVolume: %x, ->part_no: %d ->flags: %x\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊
380 pause();␊
381␉/* Results␊
382␉ Rescan found 1 HDD and bvCount=4␊
383␉ bvr: 836bc10, dev: 80, part: 4, flags: 4a, vis: 1␊
384␉ bvr: 836bce0, dev: 80, part: 3, flags: 4b, vis: 1␊
385␉ bvr: 836be90, dev: 80, part: 2, flags: 4, vis: 1␊
386␉ bvr: 836bf60, dev: 80, part: 1, flags: a, vis: 0␊
387␉ count: 3␊
388␉ ␊
389␉ foundPrimary and flags bvr1=a bvr2=4b␊
390␉ Default: 836bce0, ->biosdev: 80, ->part_no: 3 ->flags: 4b //booted partition␊
391␉ bt(0,0): 8262030, ->biosdev: 80, ->part_no: 3 ->flags: 4b //unknown pointer␊
392␉␊
393␉ */␊
394#endif␊
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, "%skernelcache_%s", kDefaultCachePathSnow, (archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64"); //, adler32);␊
526␉␉␉␉//Slice - TODO␊
527␉␉␉␉/*␊
528␉␉␉␉ - but the name is longer .adler32 and more...␊
529␉␉␉␉ kernelcache_i386.E102928C.qSs0␊
530␉␉␉␉ so will opendir and scan for some file␊
531␉␉␉␉ ␊
532␉␉␉␉char* name;␊
533␉␉␉␉long flagsC;␊
534␉␉␉␉long timeC;␊
535␉␉␉␉struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);␊
536␉␉␉␉while(readdir(cacheDir, (const char**)&name, &flagsC, &timeC) >= 0)␊
537␉␉␉␉{␊
538␉␉␉␉␉if(strcmp(&name[0], gBootKernelCacheFile) == 0) //?␊
539␉␉␉␉␉{␊
540␉␉␉␉␉␉//char* tmp = malloc(strlen(name) + 1);␊
541␉␉␉␉␉␉//strcpy(tmp, name);␊
542␉␉␉␉␉}␊
543␉␉␉␉}␊
544␉␉␉␉*/␉␉␊
545␉␉␉}␊
546␉␉␉else //if(gMacOSVersion[3] == '5')␊
547␉␉␉␉sprintf(gBootKernelCacheFile, "%skernelcache", kDefaultCachePath);␊
548 }␊
549 // Check for cache file.␊
550 trycache = (((gBootMode & kBootModeSafe) == 0) &&␊
551 !gOverrideKernel &&␊
552 (gBootFileType == kBlockDeviceType) &&␊
553 (gMKextName[0] == '\0') &&␊
554 (gBootKernelCacheFile[0] != '\0')); // &&␊
555//␉␉␉␉␉(gMacOSVersion[3] != '4'));␊
556␉␉verbose("Try cache %s %s\n", gBootKernelCacheFile, trycache?"YES":"NO");␊
557␉␉␊
558␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊
559␉␉␊
560 if (trycache) do {␊
561␉␉␉␊
562 // if we haven't found the kernel yet, don't use the cache␊
563 ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊
564 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊
565 trycache = 0;␊
566 break;␊
567 }␊
568 ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊
569 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊
570 || (cachetime < kerneltime)) {␊
571 trycache = 0;␊
572 verbose("Try cache failed\n");␊
573 break;␊
574 }␊
575 ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊
576 if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊
577 && (cachetime < exttime)) {␊
578 trycache = 0;␊
579 break;␊
580 }␊
581 if (kerneltime > exttime) {␊
582 exttime = kerneltime;␊
583 }␊
584 if (cachetime != (exttime + 1)) {␊
585 trycache = 0;␊
586 break;␊
587 }␊
588 } while (0);␊
589␉␉␊
590 do {␊
591 if (trycache) {␊
592 bootFile = gBootKernelCacheFile;␊
593 verbose("Loading kernel cache %s\n", bootFile);␊
594 ret = LoadFile(bootFile);␊
595 binary = (void *)kLoadAddr;␊
596 if (ret >= 0) {␊
597 break;␊
598 }␊
599 }␊
600 bootFile = bootInfo->bootFile;␊
601␉␉␉␊
602 // Try to load kernel image from alternate locations on boot helper partitions.␊
603 sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊
604 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
605 ␉ ␉ if (ret == -1)␊
606 ␉ ␉ {␊
607␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊
608␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
609␉␉␉␉if (ret == -1)␊
610␉␉␉␉{␊
611␉␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊
612␉␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
613␉␉␉␉␉if (ret == -1)␊
614␉␉␉␉␉{␊
615␉␉␉␉␉␉// Not found any alternate locations, using the original kernel image path.␊
616␉␉␉␉␉␉strcpy(bootFileSpec, bootFile);␊
617␉␉␉␉␉}␊
618␉␉␉␉}␊
619 }␊
620␉␉␉␊
621 verbose("Loading kernel %s\n", bootFileSpec);␊
622 ret = LoadThinFatFile(bootFileSpec, &binary);␊
623 if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊
624 {␊
625␉␉␉␉archCpuType = CPU_TYPE_I386;␊
626␉␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊
627 }␊
628␉␉␉␊
629 } while (0);␊
630␉␉␊
631 clearActivityIndicator();␊
632#if DEBUG␊
633 printf("Pausing...");␊
634 sleep(8);␊
635#endif␊
636␉␉␊
637 if (ret <= 0) {␊
638␉␉␉printf("Can't find %s\n", bootFile);␊
639␉␉␉␊
640␉␉␉sleep(1);␊
641#ifndef OPTION_ROM␊
642 if (gBootFileType == kNetworkDeviceType) {␊
643 // Return control back to PXE. Don't unload PXE base code.␊
644 gUnloadPXEOnExit = false;␊
645 break;␊
646 }␊
647#endif␊
648 } else {␊
649 /* Won't return if successful. */␊
650␉␉␉// Notify modules that ExecKernel is about to be called␊
651 ret = ExecKernel(binary);␊
652 }␊
653␊
654 } /* while(1) */␊
655 ␊
656 // chainboot␊
657 if (status==1) {␊
658␉␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊
659␉␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊
660␉␉}␊
661 }␊
662#ifndef OPTION_ROM␊
663 if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊
664␉␉nbpUnloadBaseCode();␊
665 }␊
666#endif␊
667}␊
668␊
669/*!␊
670 Selects a new BIOS device, taking care to update the global state appropriately.␊
671 */␊
672/*␊
673 static void selectBiosDevice(void)␊
674 {␊
675 struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊
676 CacheReset();␊
677 diskFreeMap(oldMap);␊
678 oldMap = NULL;␊
679 ␊
680 int dev = selectAlternateBootDevice(gBIOSDev);␊
681 ␊
682 BVRef bvchain = scanBootVolumes(dev, 0);␊
683 BVRef bootVol = selectBootVolume(bvchain);␊
684 gBootVolume = bootVol;␊
685 setRootVolume(bootVol);␊
686 gBIOSDev = dev;␊
687 }␊
688 */␊
689␊
690static bool getOSVersion(char *str)␊
691{␊
692␉bool valid = false;␊
693//␉config_file_t systemVersion;␊
694␉const char *val;␊
695␉int len;␊
696␉␊
697␉if (!loadConfigFile("/System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊
698␉{␊
699␉␉valid = true;␊
700␉}␊
701␉else if (!loadConfigFile("/System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊
702␉{␊
703␉␉valid = true;␊
704␉}␊
705␉␊
706␉if (valid)␊
707␉{␊
708␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion))␊
709␉␉{␊
710␉␉␉// getValueForKey uses const char for val␊
711␉␉␉// so copy it and trim␊
712␉␉␉*str = '\0';␊
713␉␉␉strncat(str, val, MIN(len, 4));␊
714␉␉}␊
715␉␉else␊
716␉␉␉valid = false;␊
717␉}␊
718␉␊
719␉return valid;␊
720}␊
721␊
722#define BASE 65521L /* largest prime smaller than 65536 */␊
723#define NMAX 5000␊
724// NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊
725␊
726#define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊
727#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊
728#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊
729#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊
730#define DO16(buf) DO8(buf,0); DO8(buf,8);␊
731/*␊
732unsigned long Adler32(unsigned char *buf, long len)␊
733{␊
734 unsigned long s1 = 1; // adler & 0xffff;␊
735 unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊
736 unsigned long result;␊
737 int k;␊
738␉␊
739 while (len > 0) {␊
740 k = len < NMAX ? len : NMAX;␊
741 len -= k;␊
742 while (k >= 16) {␊
743 DO16(buf);␊
744 buf += 16;␊
745 k -= 16;␊
746 }␊
747 if (k != 0) do {␊
748 s1 += *buf++;␊
749 s2 += s1;␊
750 } while (--k);␊
751 s1 %= BASE;␊
752 s2 %= BASE;␊
753 }␊
754 result = (s2 << 16) | s1;␊
755 return OSSwapHostToBigInt32(result);␊
756}␊
757*/

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