Chameleon

Chameleon Svn Source Tree

Root/branches/slice/old749m/i386/boot2/boot.c

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 || gVerboseMode)␊
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␉␉setVideoMode( GRAPHICS_MODE, 0 );␊
216␉}␊
217␊
218␉␊
219␉setupBooterLog();␊
220␉␊
221 finalizeBootStruct();␊
222 ␉␊
223␉// Jump to kernel's entry point. There's no going back now.␊
224 startprog( kernelEntry, bootArgs );␊
225␉␊
226 // Not reached␊
227␉␊
228 return 0;␊
229}␊
230␊
231//==========================================================================␊
232// This is the entrypoint from real-mode which functions exactly as it did␊
233// before. Multiboot does its own runtime initialization, does some of its␊
234// own things, and then calls common_boot.␊
235void boot(int biosdev)␊
236{␊
237␉initialize_runtime();␊
238␉// Enable A20 gate before accessing memory above 1Mb.␊
239␉enableA20();␊
240␉common_boot(biosdev);␊
241}␊
242␊
243//==========================================================================␊
244// The 'main' function for the booter. Called by boot0 when booting␊
245// from a block device, or by the network booter.␊
246//␊
247// arguments:␊
248// biosdev - Value passed from boot1/NBP to specify the device␊
249// that the booter was loaded from.␊
250//␊
251// If biosdev is kBIOSDevNetwork, then this function will return if␊
252// booting was unsuccessful. This allows the PXE firmware to try the␊
253// next boot device on its list.␊
254void common_boot(int biosdev)␊
255{␊
256 int status;␊
257␉int␉␉trycache;␊
258 char *bootFile;␊
259 unsigned long adler32;␊
260 bool quiet;␊
261 bool firstRun = true;␊
262 bool instantMenu;␊
263#ifndef OPTION_ROM␊
264 bool rescanPrompt;␊
265#endif␊
266 unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊
267 unsigned int denyBVFlags = kBVFlagEFISystem;␊
268␉␊
269#ifndef OPTION_ROM␊
270 // Set reminder to unload the PXE base code. Neglect to unload␊
271 // the base code will result in a hang or kernel panic.␊
272 gUnloadPXEOnExit = true;␊
273#endif␊
274␉␊
275 // Record the device that the booter was loaded from.␊
276 gBIOSDev = biosdev & kBIOSDevMask; // 0xff␊
277␉␊
278 // Initialize boot info structure.␊
279 initKernBootStruct();␊
280␉␊
281␉initBooterLog();␊
282␉␊
283 // Setup VGA text mode.␊
284 // Not sure if it is safe to call setVideoMode() before the␊
285 // config table has been loaded. Call video_mode() instead.␊
286 video_mode( 2 ); // 80x25 mono text mode.␊
287␉␊
288 // Scan and record the system's hardware information.␊
289 scan_platform();␊
290␊
291 // First get info for boot volume.␊
292 scanBootVolumes(gBIOSDev, 0);␊
293 bvChain = getBVChainForBIOSDev(gBIOSDev);␊
294␉␊
295#if DEBUG␉␊
296 printf("get bvChain dev=%02x type=%02x part_no=%d\n", bvChain->biosdev, bvChain->type, bvChain->part_no); //dev=0x80 - flash-stick␊
297//␉␉getc();␊
298#endif␊
299␉␊
300 setBootGlobals(bvChain);␊
301␉␊
302 // Load boot.plist config file␊
303 status = loadSystemConfig(&bootInfo->bootConfig);␊
304␊
305 if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊
306 gBootMode |= kBootModeQuiet;␊
307 }␊
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␉␊
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, "kernelcache_%s", /*kDefaultCachePathSnow,*/ (archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64"); //, adler32);␊
527␉␉␉␉msglog("search for kernelcache %s\n", gBootKernelCacheFile);␊
528␉␉␉␉int lnam = sizeof(gBootKernelCacheFile) + 9; //with adler32␊
529␉␉␉␉//Slice - TODO␊
530␉␉␉␉/*␊
531␉␉␉␉ - but the name is longer .adler32 and more...␊
532␉␉␉␉ kernelcache_i386.E102928C.qSs0␊
533␉␉␉␉ so will opendir and scan for some files␊
534␉␉␉␉*/ ␊
535␉␉␉␉char* name;␊
536␉␉␉␉long flagsC;␊
537␉␉␉␉long timeC;␊
538␉␉␉␉struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);␊
539␉␉␉␉while(readdir(cacheDir, (const char**)&name, &flagsC, &timeC) >= 0)␊
540␉␉␉␉{␊
541␉␉␉␉␉if(strstr(name, gBootKernelCacheFile)) //?␊
542␉␉␉␉␉{␊
543␉␉␉␉␉␉if(name[lnam] == '.') continue;␊
544␉␉␉␉␉␉//char* tmp = malloc(strlen(name) + 1);␊
545␉␉␉␉␉␉sprintf(gBootKernelCacheFile, "%s%s", kDefaultCachePathSnow, name);␊
546␉␉␉␉␉␉verbose("find kernelcache=%s\n", gBootKernelCacheFile);␊
547␉␉␉␉␉␉break;␊
548␉␉␉␉␉}␊
549␉␉␉␉}␊
550␉␉//␉␉close(cacheDir);␊
551␉␉␉␉␉␉␊
552␉␉␉}␊
553␉␉␉else //if(gMacOSVersion[3] == '5')␊
554␉␉␉␉sprintf(gBootKernelCacheFile, "%skernelcache", kDefaultCachePath);␊
555 }␊
556␉␉␊
557 // Check for cache file.␊
558 trycache = (((gBootMode & kBootModeSafe) == 0) &&␊
559 !gOverrideKernel &&␊
560 (gBootFileType == kBlockDeviceType) &&␊
561 (gMKextName[0] == '\0') &&␊
562 (gBootKernelCacheFile[0] != '\0')); // &&␊
563//␉␉␉␉␉(gMacOSVersion[3] != '4'));␊
564␉␉verbose("Try cache %s %s\n", gBootKernelCacheFile, trycache?"YES":"NO");␊
565␉␉␊
566␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊
567␉␉␊
568 if (trycache) do {␊
569␉␉␉␊
570 // if we haven't found the kernel yet, don't use the cache␊
571 ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊
572 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊
573 trycache = 0;␊
574 break;␊
575 }␊
576 ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊
577 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊
578 || (cachetime < kerneltime)) {␊
579 trycache = 0;␊
580 verbose("Try cache failed\n");␊
581 break;␊
582 }␊
583 ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊
584 if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊
585 && (cachetime < exttime)) {␊
586 trycache = 0;␊
587 break;␊
588 }␊
589 if (kerneltime > exttime) {␊
590 exttime = kerneltime;␊
591 }␊
592 if (cachetime != (exttime + 1)) {␊
593 trycache = 0;␊
594 break;␊
595 }␊
596 } while (0);␊
597␉␉␊
598 do {␊
599 if (trycache) {␊
600 bootFile = gBootKernelCacheFile;␊
601 verbose("Loading kernel cache %s\n", bootFile);␊
602 ret = LoadFile(bootFile);␊
603 binary = (void *)kLoadAddr;␊
604 if (ret >= 0) {␊
605 break;␊
606 }␊
607 }␊
608 bootFile = bootInfo->bootFile;␊
609␉␉␉␊
610 // Try to load kernel image from alternate locations on boot helper partitions.␊
611 sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊
612 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
613 ␉ ␉ if (ret == -1)␊
614 ␉ ␉ {␊
615␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊
616␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
617␉␉␉␉if (ret == -1)␊
618␉␉␉␉{␊
619␉␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊
620␉␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
621␉␉␉␉␉if (ret == -1)␊
622␉␉␉␉␉{␊
623␉␉␉␉␉␉// Not found any alternate locations, using the original kernel image path.␊
624␉␉␉␉␉␉strcpy(bootFileSpec, bootFile);␊
625␉␉␉␉␉}␊
626␉␉␉␉}␊
627 }␊
628␉␉␉␊
629 verbose("Loading kernel %s\n", bootFileSpec);␊
630 ret = LoadThinFatFile(bootFileSpec, &binary);␊
631 if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊
632 {␊
633␉␉␉␉archCpuType = CPU_TYPE_I386;␊
634␉␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊
635 }␊
636␉␉␉␊
637 } while (0);␊
638␉␉␊
639 clearActivityIndicator();␊
640#if DEBUG␊
641 printf("Pausing...");␊
642 sleep(8);␊
643#endif␊
644␉␉␊
645 if (ret <= 0) {␊
646␉␉␉printf("Can't find %s\n", bootFile);␊
647␉␉␉␊
648␉␉␉sleep(1);␊
649#ifndef OPTION_ROM␊
650 if (gBootFileType == kNetworkDeviceType) {␊
651 // Return control back to PXE. Don't unload PXE base code.␊
652 gUnloadPXEOnExit = false;␊
653 break;␊
654 }␊
655#endif␊
656 } else {␊
657 /* Won't return if successful. */␊
658␉␉␉// Notify modules that ExecKernel is about to be called␊
659 ret = ExecKernel(binary);␊
660 }␊
661␊
662 } /* while(1) */␊
663 ␊
664 // chainboot␊
665 if (status==1) {␊
666␉␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊
667␉␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊
668␉␉}␊
669 }␊
670#ifndef OPTION_ROM␊
671 if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊
672␉␉nbpUnloadBaseCode();␊
673 }␊
674#endif␊
675}␊
676␊
677/*!␊
678 Selects a new BIOS device, taking care to update the global state appropriately.␊
679 */␊
680/*␊
681 static void selectBiosDevice(void)␊
682 {␊
683 struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊
684 CacheReset();␊
685 diskFreeMap(oldMap);␊
686 oldMap = NULL;␊
687 ␊
688 int dev = selectAlternateBootDevice(gBIOSDev);␊
689 ␊
690 BVRef bvchain = scanBootVolumes(dev, 0);␊
691 BVRef bootVol = selectBootVolume(bvchain);␊
692 gBootVolume = bootVol;␊
693 setRootVolume(bootVol);␊
694 gBIOSDev = dev;␊
695 }␊
696 */␊
697␊
698static bool getOSVersion(char *str)␊
699{␊
700␉bool valid = false;␊
701//␉config_file_t systemVersion;␊
702␉const char *val;␊
703␉int len;␊
704//␉msglog("Address loadConfigFile=%x bootInfo=%x\n", &loadConfigFile, &bootInfo);␊
705␉if (!loadConfigFile("/System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊
706␉{␊
707␉␉valid = true;␊
708␉}␊
709␉else if (!loadConfigFile("/System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊
710␉{␊
711␉␉valid = true;␊
712␉}␊
713␉␊
714␉if (valid)␊
715␉{␊
716␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion))␊
717␉␉{␊
718␉␉␉// getValueForKey uses const char for val␊
719␉␉␉// so copy it and trim␊
720␉␉␉*str = '\0';␊
721␉␉␉strncat(str, val, MIN(len, 4));␊
722␉␉}␊
723␉␉else␊
724␉␉␉valid = false;␊
725␉}␊
726␉␊
727␉return valid;␊
728}␊
729␊
730#define BASE 65521L /* largest prime smaller than 65536 */␊
731#define NMAX 5000␊
732// NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊
733␊
734#define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊
735#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊
736#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊
737#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊
738#define DO16(buf) DO8(buf,0); DO8(buf,8);␊
739/*␊
740unsigned long Adler32(unsigned char *buf, long len)␊
741{␊
742 unsigned long s1 = 1; // adler & 0xffff;␊
743 unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊
744 unsigned long result;␊
745 int k;␊
746␉␊
747 while (len > 0) {␊
748 k = len < NMAX ? len : NMAX;␊
749 len -= k;␊
750 while (k >= 16) {␊
751 DO16(buf);␊
752 buf += 16;␊
753 k -= 16;␊
754 }␊
755 if (k != 0) do {␊
756 s1 += *buf++;␊
757 s2 += s1;␊
758 } while (--k);␊
759 s1 %= BASE;␊
760 s2 %= BASE;␊
761 }␊
762 result = (s2 << 16) | s1;␊
763 return OSSwapHostToBigInt32(result);␊
764}␊
765*/

Archive Download this file

Revision: 1174