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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 *gSMBIOS;␊
78int gDualLink;␊
79#ifndef OPTION_ROM␊
80bool gEnableCDROMRescan;␊
81bool gScanSingleDrive;␊
82#endif␊
83config_file_t systemVersion;␉␉// system.plist of booting partition␊
84␊
85␊
86int bvCount = 0;␊
87//int␉menucount = 0;␊
88int gDeviceCount = 0; ␊
89␊
90BVRef bvr;␊
91BVRef menuBVR;␊
92BVRef bvChain;␊
93␊
94//static void selectBiosDevice(void);␊
95//static unsigned long Adler32(unsigned char *buffer, long length);␊
96static bool getOSVersion(char *str);␊
97␊
98#ifndef OPTION_ROM␊
99static bool gUnloadPXEOnExit = false;␊
100#endif␊
101␊
102/*␊
103 * How long to wait (in seconds) to load the␊
104 * kernel after displaying the "boot:" prompt.␊
105 */␊
106#define kBootErrorTimeout 5␊
107␊
108/*␊
109 * Default path to kernel cache file␊
110 */␊
111 //Slice - first one for Leopard␊
112#define kDefaultCachePath "/System/Library/Caches/com.apple.kernelcaches/"␊
113#define kDefaultCachePathSnow "/System/Library/Caches/com.apple.kext.caches/Startup/"␊
114//#define kDefaultCachePathTiger "/System/Library/Extensions.kextcache"␊
115//file://localhost/System/Library/Extensions.kextcache␊
116␊
117␊
118␊
119//==========================================================================␊
120// Zero the BSS.␊
121␊
122static void zeroBSS(void)␊
123{␊
124␉extern char _DATA__bss__begin, _DATA__bss__end;␊
125␉extern char _DATA__common__begin, _DATA__common__end;␊
126␉␊
127␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊
128␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊
129}␊
130␊
131//==========================================================================␊
132// Malloc error function␊
133␊
134static void malloc_error(char *addr, size_t size, const char *file, int line)␊
135{␊
136␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊
137}␊
138␊
139//==========================================================================␊
140//Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊
141//␊
142void initialize_runtime(void)␊
143{␊
144␉zeroBSS();␊
145␉malloc_init(0, 0, 0, malloc_error);␊
146}␊
147␊
148//==========================================================================␊
149// execKernel - Load the kernel image (mach-o) and jump to its entry point.␊
150␊
151int ExecKernel(void *binary)␊
152{␊
153 entry_t kernelEntry;␊
154 int ret;␊
155␉␊
156 bootArgs->kaddr = bootArgs->ksize = 0;␊
157␉execute_hook("ExecKernel", (void*)binary, NULL, NULL, NULL);␊
158␊
159 ret = DecodeKernel(binary,␊
160 &kernelEntry,␊
161 (char **) &bootArgs->kaddr,␊
162 (int *)&bootArgs->ksize );␊
163␊
164 if ( ret != 0 )␊
165 return ret;␊
166 // Reserve space for boot args␊
167 reserveKernBootStruct();␊
168␉␊
169 // Load boot drivers from the specifed root path.␊
170␉execute_hook("DecodedKernel", (void*)binary, NULL, NULL, NULL);␊
171␊
172␉␊
173␉setupFakeEfi();␊
174␉␊
175 if (!gHaveKernelCache) {␊
176␉␉LoadDrivers("/");␊
177 }␊
178␉␊
179 clearActivityIndicator();␊
180␉␊
181 if (gErrors) {␊
182 msglog("Errors encountered while starting up the computer.\n");␊
183 // printf("Pausing %d seconds...\n", kBootErrorTimeout);␊
184 // sleep(kBootErrorTimeout);␊
185 }␊
186␉␊
187␉md0Ramdisk();␊
188␉␊
189 verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "i386" : "x86_64");␊
190#ifndef OPTION_ROM␊
191 // Cleanup the PXE base code.␊
192␉␊
193 if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊
194␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊
195 {␊
196 ␉verbose("nbpUnloadBaseCode error %d\n", (int) ret);␊
197 sleep(2);␊
198 }␊
199 }␊
200#endif ␊
201 bool dummyVal;␊
202␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal)␊
203␉{␊
204␉␉printf("Press any key to continue...");␊
205␉␉getc();␊
206␉}␊
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␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␉// Notify modules that the kernel is about to be started␊
223␊
224␉// Jump to kernel's entry point. There's no going back now.␊
225 startprog( kernelEntry, bootArgs );␊
226␉␊
227 // Not reached␊
228␉␊
229 return 0;␊
230}␊
231␊
232//==========================================================================␊
233// This is the entrypoint from real-mode which functions exactly as it did␊
234// before. Multiboot does its own runtime initialization, does some of its␊
235// own things, and then calls common_boot.␊
236void boot(int biosdev)␊
237{␊
238␉initialize_runtime();␊
239␉// Enable A20 gate before accessing memory above 1Mb.␊
240␉enableA20();␊
241␉common_boot(biosdev);␊
242}␊
243␊
244//==========================================================================␊
245// The 'main' function for the booter. Called by boot0 when booting␊
246// from a block device, or by the network booter.␊
247//␊
248// arguments:␊
249// biosdev - Value passed from boot1/NBP to specify the device␊
250// that the booter was loaded from.␊
251//␊
252// If biosdev is kBIOSDevNetwork, then this function will return if␊
253// booting was unsuccessful. This allows the PXE firmware to try the␊
254// next boot device on its list.␊
255void common_boot(int biosdev)␊
256{␊
257 int status;␊
258␉int␉␉trycache;␊
259 char *bootFile;␊
260 unsigned long adler32;␊
261 bool quiet;␊
262 bool firstRun = true;␊
263 bool instantMenu;␊
264#ifndef OPTION_ROM␊
265 bool rescanPrompt;␊
266#endif␊
267 unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊
268 unsigned int denyBVFlags = kBVFlagEFISystem;␊
269␉␊
270#ifndef OPTION_ROM␊
271 // Set reminder to unload the PXE base code. Neglect to unload␊
272 // the base code will result in a hang or kernel panic.␊
273 gUnloadPXEOnExit = true;␊
274#endif␊
275␉␊
276 // Record the device that the booter was loaded from.␊
277 gBIOSDev = biosdev & kBIOSDevMask; // 0xff␊
278␉␊
279 // Initialize boot info structure.␊
280 initKernBootStruct();␊
281␉␊
282␉initBooterLog();␊
283␉␊
284 // Setup VGA text mode.␊
285 // Not sure if it is safe to call setVideoMode() before the␊
286 // config table has been loaded. Call video_mode() instead.␊
287 video_mode( 2 ); // 80x25 mono text mode.␊
288␉␊
289 // Scan and record the system's hardware information.␊
290 scan_platform();␊
291␊
292 // First get info for boot volume.␊
293 scanBootVolumes(gBIOSDev, 0);␊
294 bvChain = getBVChainForBIOSDev(gBIOSDev);␊
295␉␊
296#if DEBUG␉␊
297 printf("get bvChain dev=%02x type=%02x part_no=%d\n", bvChain->biosdev, bvChain->type, bvChain->part_no); //dev=0x80 - flash-stick␊
298␉␉getc();␊
299#endif␊
300␉␊
301 setBootGlobals(bvChain);␊
302␉␊
303 // Load boot.plist config file␊
304 status = loadSystemConfig(&bootInfo->bootConfig);␊
305 if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊
306 gBootMode |= kBootModeQuiet;␊
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, ->biosdev: %x, ->part_no: %d ->flags: %x\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊
378 printf(" bt(0,0): %x, ->biosdev: %x, ->part_no: %d ->flags: %x\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊
379 getc();␊
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 setBootGlobals(bvChain);␊
397␉␊
398 // Parse args, load and start kernel.␊
399 while (1) {␊
400 const char *val;␊
401 int len;␊
402 // int trycache;␊
403 long flags, cachetime, kerneltime, exttime, sleeptime, time;␊
404 int ret = -1;␊
405 void *binary = (void *)kLoadAddr;␊
406 bool tryresume;␊
407 bool tryresumedefault;␊
408 bool forceresume;␊
409␉␉␊
410 // additional variable for testing alternate kernel image locations on boot helper partitions.␊
411 char bootFileSpec[512];␊
412␉␉␊
413 // Initialize globals.␊
414␉␉␊
415 sysConfigValid = false;␊
416 gErrors = false;␊
417 trycache␉␉=␉1;␊
418␉␉␊
419 status = getBootOptions(firstRun);␊
420 firstRun = false;␊
421 if (status == -1) continue;␊
422␉␉␊
423 status = processBootOptions();␊
424 // Status==1 means to chainboot␊
425 if ( status == 1 ) break;␊
426 // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊
427 if ( status == -1 )␊
428 {␊
429␉␉␉// gBootVolume == NULL usually means the user hit escape.␊
430␉␉␉if(gBootVolume == NULL)␊
431␉␉␉{␊
432␉␉␉␉freeFilteredBVChain(bvChain);␊
433#ifndef OPTION_ROM␊
434␉␉␉␉if (gEnableCDROMRescan)␊
435␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊
436#endif␊
437␉␉␉␉␊
438␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
439␉␉␉␉setBootGlobals(bvChain);␊
440␉␉␉}␊
441#if DEBUG␊
442␉␉␉verbose("After rescan\n");␊
443␉␉␉verbose(" System: %x, ->biosdev: %x, ->part_no: %d ->flags: %x\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊
444␉␉␉verbose(" Booter: %x, ->biosdev: %x, ->part_no: %d ->flags: %x\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊
445␉␉␉// getc();␊
446#endif␊
447␉␉␉␊
448␉␉␉continue;␊
449 }␊
450␉␉␊
451␉␉␊
452␉␉// Find out which version mac os we're booting.␊
453␉␉getOSVersion(gMacOSVersion);␊
454␉␉␊
455␉␉if (platformCPUFeature(CPU_FEATURE_EM64T)) {␊
456␉␉␉archCpuType = CPU_TYPE_X86_64;␊
457␉␉} else {␊
458␉␉␉archCpuType = CPU_TYPE_I386;␊
459␉␉}␊
460␉␉if (getValueForKey(karch, &val, &len, &bootInfo->bootConfig)) {␊
461␉␉␉if (strncmp(val, "i386", 4) == 0) {␊
462␉␉␉␉archCpuType = CPU_TYPE_I386;␊
463␉␉␉}␊
464␉␉}␊
465␉␉␊
466␉␉// Notify modules that we are attempting to boot␊
467␉␉execute_hook("PreBoot", NULL, NULL, NULL, NULL);␊
468␊
469␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->bootConfig)) {␊
470␉␉␉tryresume = true;␊
471␉␉␉tryresumedefault = true;␊
472␉␉} else {␊
473␉␉␉tryresumedefault = false;␊
474␉␉}␊
475␉␉␊
476␉␉if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->bootConfig)) {␊
477␉␉␉forceresume = false;␊
478␉␉}␊
479␉␉␊
480␉␉if (forceresume) {␊
481␉␉␉tryresume = true;␊
482␉␉␉tryresumedefault = false;␊
483␉␉}␊
484␉␉␊
485␉␉while (tryresume) {␊
486␉␉␉const char *tmp;␊
487␉␉␉BVRef bvr;␊
488␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->bootConfig))␊
489␉␉␉␉val="/private/var/vm/sleepimage";␊
490␉␉␉␊
491␉␉␉// Do this first to be sure that root volume is mounted␊
492␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊
493␉␉␉␊
494␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊
495␉␉␉␉break;␊
496␉␉␉␊
497␉␉␉// Can't check if it was hibernation Wake=y is required␊
498␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊
499␉␉␉␉break;␊
500␉␉␉␊
501␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊
502␉␉␉␉break;␊
503␉␉␉␊
504␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊
505␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊
506␉␉␉␉break;␊
507␉␉␉}␊
508␉␉␉␊
509␉␉␉HibernateBoot((char *)val);␊
510␉␉␉break;␊
511␉␉}␊
512␉␉␊
513 // Reset cache name.␊
514 bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊
515␉␉␊
516 sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊
517␉␉␊
518 adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊
519␉␉␊
520 if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig) == true) {␊
521 strlcpy(gBootKernelCacheFile, val, len+1);␊
522 } else {␊
523␉␉␉if(gMacOSVersion[3] == '6') {␊
524␉␉␉␉sprintf(gBootKernelCacheFile, "%skernelcache_%s", kDefaultCachePathSnow, (archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64"); //, adler32);␊
525␉␉␉␉//Slice - TODO␊
526␉␉␉␉/*␊
527␉␉␉␉ - but the name is longer .adler32 and more...␊
528␉␉␉␉ kernelcache_i386.E102928C.qSs0␊
529␉␉␉␉ so will opendir and scan for some file␊
530␉␉␉␉ ␊
531␉␉␉␉char* name;␊
532␉␉␉␉long flagsC;␊
533␉␉␉␉long timeC;␊
534␉␉␉␉struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);␊
535␉␉␉␉while(readdir(cacheDir, (const char**)&name, &flagsC, &timeC) >= 0)␊
536␉␉␉␉{␊
537␉␉␉␉␉if(strcmp(&name[0], gBootKernelCacheFile) == 0) //?␊
538␉␉␉␉␉{␊
539␉␉␉␉␉␉//char* tmp = malloc(strlen(name) + 1);␊
540␉␉␉␉␉␉//strcpy(tmp, name);␊
541␉␉␉␉␉}␊
542␉␉␉␉}␊
543␉␉␉␉*/␉␉␊
544␉␉␉}␊
545␉␉␉else //if(gMacOSVersion[3] == '5')␊
546␉␉␉␉sprintf(gBootKernelCacheFile, "%skernelcache", kDefaultCachePath);␊
547 }␊
548 // Check for cache file.␊
549 trycache = (((gBootMode & kBootModeSafe) == 0) &&␊
550 !gOverrideKernel &&␊
551 (gBootFileType == kBlockDeviceType) &&␊
552 (gMKextName[0] == '\0') &&␊
553 (gBootKernelCacheFile[0] != '\0')); // &&␊
554//␉␉␉␉␉(gMacOSVersion[3] != '4'));␊
555␉␉verbose("Try cache %s %s\n", gBootKernelCacheFile, trycache?"YES":"NO");␊
556␉␉␊
557␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊
558␉␉␊
559 if (trycache) do {␊
560␉␉␉␊
561 // if we haven't found the kernel yet, don't use the cache␊
562 ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊
563 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊
564 trycache = 0;␊
565 break;␊
566 }␊
567 ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊
568 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊
569 || (cachetime < kerneltime)) {␊
570 trycache = 0;␊
571 verbose("Try cache failed\n");␊
572 break;␊
573 }␊
574 ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊
575 if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊
576 && (cachetime < exttime)) {␊
577 trycache = 0;␊
578 break;␊
579 }␊
580 if (kerneltime > exttime) {␊
581 exttime = kerneltime;␊
582 }␊
583 if (cachetime != (exttime + 1)) {␊
584 trycache = 0;␊
585 break;␊
586 }␊
587 } while (0);␊
588␉␉␊
589 do {␊
590 if (trycache) {␊
591 bootFile = gBootKernelCacheFile;␊
592 verbose("Loading kernel cache %s\n", bootFile);␊
593 ret = LoadFile(bootFile);␊
594 binary = (void *)kLoadAddr;␊
595 if (ret >= 0) {␊
596 break;␊
597 }␊
598 }␊
599 bootFile = bootInfo->bootFile;␊
600␉␉␉␊
601 // Try to load kernel image from alternate locations on boot helper partitions.␊
602 sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊
603 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
604 ␉ ␉ if (ret == -1)␊
605 ␉ ␉ {␊
606␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊
607␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
608␉␉␉␉if (ret == -1)␊
609␉␉␉␉{␊
610␉␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊
611␉␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
612␉␉␉␉␉if (ret == -1)␊
613␉␉␉␉␉{␊
614␉␉␉␉␉␉// Not found any alternate locations, using the original kernel image path.␊
615␉␉␉␉␉␉strcpy(bootFileSpec, bootFile);␊
616␉␉␉␉␉}␊
617␉␉␉␉}␊
618 }␊
619␉␉␉␊
620 verbose("Loading kernel %s\n", bootFileSpec);␊
621 ret = LoadThinFatFile(bootFileSpec, &binary);␊
622 if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊
623 {␊
624␉␉␉␉archCpuType = CPU_TYPE_I386;␊
625␉␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊
626 }␊
627␉␉␉␊
628 } while (0);␊
629␉␉␊
630 clearActivityIndicator();␊
631#if DEBUG␊
632 printf("Pausing...");␊
633 sleep(8);␊
634#endif␊
635␉␉␊
636 if (ret <= 0) {␊
637␉␉␉printf("Can't find %s\n", bootFile);␊
638␉␉␉␊
639␉␉␉sleep(1);␊
640#ifndef OPTION_ROM␊
641 if (gBootFileType == kNetworkDeviceType) {␊
642 // Return control back to PXE. Don't unload PXE base code.␊
643 gUnloadPXEOnExit = false;␊
644 break;␊
645 }␊
646#endif␊
647 } else {␊
648 /* Won't return if successful. */␊
649␉␉␉// Notify modules that ExecKernel is about to be called␊
650 ret = ExecKernel(binary);␊
651 }␊
652␊
653 } /* while(1) */␊
654 ␊
655 // chainboot␊
656 if (status==1) {␊
657␉␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊
658␉␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊
659␉␉}␊
660 }␊
661#ifndef OPTION_ROM␊
662 if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊
663␉␉nbpUnloadBaseCode();␊
664 }␊
665#endif␊
666}␊
667␊
668/*!␊
669 Selects a new BIOS device, taking care to update the global state appropriately.␊
670 */␊
671/*␊
672 static void selectBiosDevice(void)␊
673 {␊
674 struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊
675 CacheReset();␊
676 diskFreeMap(oldMap);␊
677 oldMap = NULL;␊
678 ␊
679 int dev = selectAlternateBootDevice(gBIOSDev);␊
680 ␊
681 BVRef bvchain = scanBootVolumes(dev, 0);␊
682 BVRef bootVol = selectBootVolume(bvchain);␊
683 gBootVolume = bootVol;␊
684 setRootVolume(bootVol);␊
685 gBIOSDev = dev;␊
686 }␊
687 */␊
688␊
689static bool getOSVersion(char *str)␊
690{␊
691␉bool valid = false;␊
692//␉config_file_t systemVersion;␊
693␉const char *val;␊
694␉int len;␊
695␉␊
696␉if (!loadConfigFile("/System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊
697␉{␊
698␉␉valid = true;␊
699␉}␊
700␉else if (!loadConfigFile("/System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊
701␉{␊
702␉␉valid = true;␊
703␉}␊
704␉␊
705␉if (valid)␊
706␉{␊
707␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion))␊
708␉␉{␊
709␉␉␉// getValueForKey uses const char for val␊
710␉␉␉// so copy it and trim␊
711␉␉␉*str = '\0';␊
712␉␉␉strncat(str, val, MIN(len, 4));␊
713␉␉}␊
714␉␉else␊
715␉␉␉valid = false;␊
716␉}␊
717␉␊
718␉return valid;␊
719}␊
720␊
721#define BASE 65521L /* largest prime smaller than 65536 */␊
722#define NMAX 5000␊
723// NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊
724␊
725#define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊
726#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊
727#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊
728#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊
729#define DO16(buf) DO8(buf,0); DO8(buf,8);␊
730/*␊
731unsigned long Adler32(unsigned char *buf, long len)␊
732{␊
733 unsigned long s1 = 1; // adler & 0xffff;␊
734 unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊
735 unsigned long result;␊
736 int k;␊
737␉␊
738 while (len > 0) {␊
739 k = len < NMAX ? len : NMAX;␊
740 len -= k;␊
741 while (k >= 16) {␊
742 DO16(buf);␊
743 buf += 16;␊
744 k -= 16;␊
745 }␊
746 if (k != 0) do {␊
747 s1 += *buf++;␊
748 s2 += s1;␊
749 } while (--k);␊
750 s1 %= BASE;␊
751 s2 %= BASE;␊
752 }␊
753 result = (s2 << 16) | s1;␊
754 return OSSwapHostToBigInt32(result);␊
755}␊
756*/

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