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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/* ␊
26 * Mach Operating System␊
27 * Copyright (c) 1990 Carnegie-Mellon University␊
28 * Copyright (c) 1989 Carnegie-Mellon University␊
29 * All rights reserved.␉ The CMU software License Agreement specifies␊
30 * the terms and conditions for use and redistribution.␊
31 */␊
32␊
33/*␊
34 *␉␉␉INTEL CORPORATION PROPRIETARY INFORMATION␊
35 *␊
36 *␉This software is supplied under the terms of a license␉agreement or ␊
37 *␉nondisclosure agreement with Intel Corporation and may not be copied ␊
38 *␉nor disclosed except in accordance with the terms of that agreement.␊
39 *␊
40 *␉Copyright 1988, 1989 by Intel Corporation␊
41 */␊
42␊
43/*␊
44 * Copyright 1993 NeXT Computer, Inc.␊
45 * All rights reserved.␊
46 */␊
47␊
48/*␊
49 * Completely reworked by Sam Streeper (sam_s@NeXT.com)␊
50 * Reworked again by Curtis Galloway (galloway@NeXT.com)␊
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 "gui.h"␊
60#include "platform.h"␊
61#include "modules.h"␊
62␊
63/*␊
64 * How long to wait (in seconds) to load the␊
65 * kernel after displaying the "boot:" prompt.␊
66 */␊
67#define kBootErrorTimeout 5␊
68␊
69bool␉␉gOverrideKernel, gEnableCDROMRescan, gScanSingleDrive, useGUI;␊
70static bool␉gUnloadPXEOnExit = false;␊
71␊
72static char␉gCacheNameAdler[64 + 256];␊
73char␉␉*gPlatformName = gCacheNameAdler;␊
74␊
75char␉␉gRootDevice[ROOT_DEVICE_SIZE];␊
76char␉␉gMKextName[512];␊
77char␉␉gMacOSVersion[8];␊
78void␉␉*gRootPCIDev;␊
79␊
80int␉␉gDualLink;␊
81int␉␉bvCount = 0, gDeviceCount = 0;␊
82//int␉␉menucount = 0;␊
83long␉␉gBootMode; /* defaults to 0 == kBootModeNormal */␊
84BVRef␉␉bvr, menuBVR, bvChain;␊
85␊
86static bool␉␉␉␉checkOSVersion(const char * version);␊
87static void␉␉␉␉getOSVersion();␊
88static unsigned long␉Adler32(unsigned char *buffer, long length);␊
89//static void␉␉␉selectBiosDevice(void);␊
90␊
91/** options.c **/␊
92extern char* msgbuf;␊
93void showTextBuffer(char *buf, int size);␊
94␊
95␊
96//==========================================================================␊
97// Zero the BSS.␊
98␊
99static void zeroBSS(void)␊
100{␊
101␉extern char _DATA__bss__begin, _DATA__bss__end;␊
102␉extern char _DATA__common__begin, _DATA__common__end;␊
103␊
104␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊
105␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊
106}␊
107␊
108//==========================================================================␊
109// Malloc error function␊
110␊
111static void malloc_error(char *addr, size_t size, const char *file, int line)␊
112{␊
113␉stop("\nMemory allocation error! Addr: 0x%x, Size: 0x%x, File: %s, Line: %d\n",␊
114␉␉␉␉␉␉␉␉␉ (unsigned)addr, (unsigned)size, file, line);␊
115}␊
116␊
117//==========================================================================␊
118//Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊
119//␊
120void initialize_runtime(void)␊
121{␊
122␉zeroBSS();␊
123␉malloc_init(0, 0, 0, malloc_error);␊
124}␊
125␊
126//==========================================================================␊
127// execKernel - Load the kernel image (mach-o) and jump to its entry point.␊
128␊
129static int ExecKernel(void *binary)␊
130{␊
131␉int␉␉␉ret;␊
132␉entry_t␉␉kernelEntry;␊
133␉␊
134␉bootArgs->kaddr = bootArgs->ksize = 0;␊
135␉execute_hook("ExecKernel", (void*)binary, NULL, NULL, NULL);␊
136␉␊
137␉ret = DecodeKernel(binary,␊
138␉␉␉␉␉ &kernelEntry,␊
139␉␉␉␉␉ (char **) &bootArgs->kaddr,␊
140␉␉␉␉␉ (int *)&bootArgs->ksize );␊
141␉␊
142␉if ( ret != 0 )␊
143␉␉return ret;␊
144␉␊
145␉// Reserve space for boot args␊
146␉reserveKernBootStruct();␊
147␉␊
148␉// Notify modules that the kernel has been decoded␊
149␉execute_hook("DecodedKernel", (void*)binary, NULL, NULL, NULL);␊
150␉␊
151␉setupFakeEfi();␊
152␉␊
153␉// Load boot drivers from the specifed root path.␊
154␉//if (!gHaveKernelCache)␊
155␉LoadDrivers("/");␊
156␉␊
157␉execute_hook("DriversLoaded", (void*)binary, NULL, NULL, NULL);␊
158␉␊
159␉clearActivityIndicator();␊
160␉␊
161␉if (gErrors) {␊
162␉␉printf("Errors encountered while starting up the computer.\n");␊
163␉␉printf("Pausing %d seconds...\n", kBootErrorTimeout);␊
164␉␉sleep(kBootErrorTimeout);␊
165␉}␊
166␉␊
167␉md0Ramdisk();␊
168␉␊
169␉verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊
170␉verbose("Boot Args: %s\n", bootArgs->CommandLine);␊
171␊
172␉// Cleanup the PXE base code.␊
173␉␊
174␉if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊
175␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊
176␉␉{␊
177␉␉␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊
178␉␉␉sleep(2);␊
179␉␉}␊
180␉}␊
181␉␊
182␉bool dummyVal;␊
183␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->chameleonConfig) && dummyVal) {␊
184␉␉showTextBuffer(msgbuf, strlen(msgbuf));␊
185␉}␊
186␉␊
187␉usb_loop();␊
188␊
189␉// If we were in text mode, switch to graphics mode.␊
190␉// This will draw the boot graphics unless we are in␊
191␉// verbose mode.␊
192␉if (gVerboseMode)␊
193␉␉setVideoMode( GRAPHICS_MODE, 0 );␊
194␉else␊
195␉␉drawBootGraphics();␊
196␉␊
197␉setupBooterLog();␊
198␉␊
199␉finalizeBootStruct();␊
200␉␊
201␉// Jump to kernel's entry point. There's no going back now.␊
202␉if ((checkOSVersion("10.7")) || (checkOSVersion("10.8"))) {␊
203␊
204␉␉// Notify modules that the kernel is about to be started␊
205␉␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␊
206␊
207␉␉// Masking out so that Lion doesn't doublefault␊
208␊
209␉␉startprog( kernelEntry, bootArgs );␊
210␉}␊
211␉else {␊
212␉␉// Notify modules that the kernel is about to be started␊
213␉␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgsPreLion, NULL, NULL);␊
214␊
215␉␉startprog( kernelEntry, bootArgsPreLion );␊
216␉}␊
217␊
218␉// Not reached␊
219␉return 0;␊
220}␊
221␊
222␊
223//==========================================================================␊
224// LoadKernelCache - Try to load Kernel Cache.␊
225// return the length of the loaded cache file or -1 on error␊
226long LoadKernelCache(const char* cacheFile, void **binary) {␊
227␉char␉␉kernelCacheFile[512];␊
228␉char␉␉kernelCachePath[512];␊
229␉long␉␉flags, time, cachetime, kerneltime, exttime, ret=-1;␊
230 unsigned long adler32;␊
231␊
232 if((gBootMode & kBootModeSafe) != 0)␊
233 {␊
234␉␉verbose("Kernel Cache ignored.\n");␊
235␉␉return -1;␊
236 }␊
237␊
238␉// Use specify kernel cache file if not empty␊
239␉if (cacheFile[0] != 0)␊
240␉␉strlcpy(kernelCacheFile, cacheFile, sizeof(kernelCacheFile));␊
241␉else {␊
242␉␉// Mountain Lion and Lion prelink kernel cache file␊
243␉␉if ((checkOSVersion("10.7")) || (checkOSVersion("10.8"))) {␊
244␉␉␉sprintf(kernelCacheFile, "%skernelcache", kDefaultCachePathSnow);␊
245 }␊
246␉␉// Snow Leopard prelink kernel cache file␊
247␉␉else if (checkOSVersion("10.6")) {␊
248␉␉␉sprintf(kernelCacheFile, "kernelcache_%s", (archCpuType == CPU_TYPE_I386)␊
249␉␉␉␉␉? "i386" : "x86_64");␊
250␉␉␉int lnam = strlen(kernelCacheFile) + 9; //with adler32␊
251␊
252␉␉␉char* name;␊
253␉␉␉long prev_time = 0;␊
254␊
255␉␉␉struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);␊
256␊
257␉␉␉while(readdir(cacheDir, (const char**)&name, &flags, &time) >= 0)␊
258␉␉␉{␊
259␉␉␉␉if (((flags & kFileTypeMask) != kFileTypeDirectory) && time > prev_time␊
260␉␉␉␉␉&& strstr(name, kernelCacheFile) && (name[lnam] != '.'))␊
261␉␉␉␉{␊
262␉␉␉␉␉sprintf(kernelCacheFile, "%s%s", kDefaultCachePathSnow, name);␊
263␉␉␉␉␉prev_time = time;␊
264␉␉␉␉}␊
265␉␉␉}␊
266␉␉}␊
267␉␉else {␊
268␉␉␉// Reset cache name.␊
269␉␉␉bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊
270␉␉␉sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊
271␉␉␉adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊
272␉␉␉sprintf(kernelCacheFile, "%s.%08lX", kDefaultCachePathLeo, adler32);␊
273␉␉}␊
274␉}␊
275␊
276␉// kernelCacheFile must start with a /␊
277␉if (kernelCacheFile[0] != '/') {␊
278␉␉char *str = strdup(kernelCacheFile);␊
279␉␉if (str == NULL)␊
280␉␉␉return -1;␊
281␉␉sprintf(kernelCacheFile, "/%s", str);␊
282␉␉free(str);␊
283␉}␊
284␊
285␉// Check if the kernel cache file exists␊
286␉ret = -1;␊
287␊
288␉// If boot from a boot helper partition check the kernel cache file on it␊
289␉if (gBootVolume->flags & kBVFlagBooter) {␊
290␉␉sprintf(kernelCachePath, "com.apple.boot.P%s", kernelCacheFile);␊
291␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊
292␉␉if ((ret == -1) || ((flags & kFileTypeMask) != kFileTypeFlat))␊
293␉␉{␊
294␉␉␉sprintf(kernelCachePath, "com.apple.boot.R%s", kernelCacheFile);␊
295␉␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊
296␉␉␉if ((ret == -1) || ((flags & kFileTypeMask) != kFileTypeFlat))␊
297␉␉␉{␊
298␉␉␉␉sprintf(kernelCachePath, "com.apple.boot.S%s", kernelCacheFile);␊
299␉␉␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊
300␉␉␉␉if ((flags & kFileTypeMask) != kFileTypeFlat)␊
301␉␉␉␉␉ret = -1;␊
302␉␉␉}␊
303␉␉}␊
304␉}␊
305␉// If not found, use the original kernel cache path.␊
306␉if (ret == -1) {␊
307␉␉strcpy(kernelCachePath, kernelCacheFile);␊
308␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊
309␉␉if ((flags & kFileTypeMask) != kFileTypeFlat)␊
310␉␉␉ret = -1;␊
311␉}␊
312␊
313␉// Exit if kernel cache file wasn't found␊
314␉if (ret == -1) {␊
315␉␉verbose("No Kernel Cache File '%s' found\n", kernelCacheFile);␊
316␉␉return -1;␊
317␉}␊
318␊
319␉// Check if the kernel cache file is more recent (mtime)␊
320␉// than the kernel file or the S/L/E directory␊
321␉ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊
322␉// Check if the kernel file is more recent than the cache file␊
323␉if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeFlat)␊
324␉␉&& (kerneltime > cachetime)) {␊
325␉␉verbose("Kernel file (%s) is more recent than KernelCache (%s), ignoring KernelCache\n",␊
326␉␉␉␉bootInfo->bootFile, kernelCacheFile);␊
327␉␉return -1;␊
328␉}␊
329␊
330␉ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊
331␉// Check if the S/L/E directory time is more recent than the cache file␊
332␉if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊
333␉␉&& (exttime > cachetime)) {␊
334␉␉verbose("/System/Library/Extensions is more recent than KernelCache (%s), ignoring KernelCache\n",␊
335␉␉␉␉kernelCacheFile);␊
336␉␉return -1;␊
337␉}␊
338␊
339␉// Since the kernel cache file exists and is the most recent try to load it␊
340␉verbose("Loading kernel cache %s\n", kernelCachePath);␊
341␊
342␉if ((checkOSVersion("10.7")) || (checkOSVersion("10.8"))) {␊
343␉␉ret = LoadThinFatFile(kernelCachePath, binary);␊
344␉} else {␊
345␉␉ret = LoadFile(kernelCachePath);␊
346␉␉*binary = (void *)kLoadAddr;␊
347␉}␊
348␉return ret; // ret contain the length of the binary␊
349}␊
350␊
351//==========================================================================␊
352// This is the entrypoint from real-mode which functions exactly as it did␊
353// before. Multiboot does its own runtime initialization, does some of its␊
354// own things, and then calls common_boot.␊
355void boot(int biosdev)␊
356{␊
357␉initialize_runtime();␊
358␉// Enable A20 gate before accessing memory above 1Mb.␊
359␉enableA20();␊
360␉common_boot(biosdev);␊
361}␊
362␊
363//==========================================================================␊
364// The 'main' function for the booter. Called by boot0 when booting␊
365// from a block device, or by the network booter.␊
366//␊
367// arguments:␊
368//␉ biosdev - Value passed from boot1/NBP to specify the device␊
369//␉␉␉ that the booter was loaded from.␊
370//␊
371// If biosdev is kBIOSDevNetwork, then this function will return if␊
372// booting was unsuccessful. This allows the PXE firmware to try the␊
373// next boot device on its list.␊
374void common_boot(int biosdev)␊
375{␊
376␉bool␉ ␉␉quiet;␊
377␉bool␉ ␉␉firstRun = true;␊
378␉bool␉ ␉␉instantMenu;␊
379␉bool␉ ␉␉rescanPrompt;␊
380␉int␉␉␉␉status;␊
381␉unsigned int␉allowBVFlags = kBVFlagSystemVolume | kBVFlagForeignBoot;␊
382␉unsigned int␉denyBVFlags = kBVFlagEFISystem;␊
383␉␊
384␉// Set reminder to unload the PXE base code. Neglect to unload␊
385␉// the base code will result in a hang or kernel panic.␊
386␉gUnloadPXEOnExit = true;␊
387␉␊
388␉// Record the device that the booter was loaded from.␊
389␉gBIOSDev = biosdev & kBIOSDevMask;␊
390␉␊
391␉// Initialize boot info structure.␊
392␉initKernBootStruct();␊
393␉␊
394␉initBooterLog();␊
395␉␊
396␉// Setup VGA text mode.␊
397␉// Not sure if it is safe to call setVideoMode() before the␊
398␉// config table has been loaded. Call video_mode() instead.␊
399#if DEBUG␊
400␉printf("before video_mode\n");␊
401#endif␊
402␉video_mode( 2 ); // 80x25 mono text mode.␊
403#if DEBUG␊
404␉printf("after video_mode\n");␊
405#endif␊
406␉␊
407␉// Scan and record the system's hardware information.␊
408␉scan_platform();␊
409␉␊
410␉// First get info for boot volume.␊
411␉scanBootVolumes(gBIOSDev, 0);␊
412␉bvChain = getBVChainForBIOSDev(gBIOSDev);␊
413␉setBootGlobals(bvChain);␊
414␉␊
415␉// Load boot.plist config file␊
416␉status = loadChameleonConfig(&bootInfo->chameleonConfig);␊
417␉␊
418␉if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->chameleonConfig) && quiet) {␊
419␉␉gBootMode |= kBootModeQuiet;␊
420␉}␊
421␉␊
422␉// Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊
423␉if (getBoolForKey(kInstantMenuKey, &instantMenu, &bootInfo->chameleonConfig) && instantMenu) {␊
424␉␉firstRun = false;␊
425␉}␊
426␉␊
427␉// Loading preboot ramdisk if exists.␊
428␉loadPrebootRAMDisk();␊
429␉␊
430␉// Disable rescan option by default␊
431␉gEnableCDROMRescan = false;␊
432␉␊
433␉// Enable it with Rescan=y in system config␊
434␉if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->chameleonConfig)␊
435␉␉&& gEnableCDROMRescan) {␊
436␉␉gEnableCDROMRescan = true;␊
437␉}␊
438␉␊
439␉// Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊
440␉rescanPrompt = false;␊
441␉if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->chameleonConfig)␊
442␉␉&& rescanPrompt && biosDevIsCDROM(gBIOSDev))␊
443␉{␊
444␉␉gEnableCDROMRescan = promptForRescanOption();␊
445␉}␊
446␉␊
447␉// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊
448␉if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->chameleonConfig)␊
449␉␉&& gScanSingleDrive) {␊
450␉␉gScanSingleDrive = true;␊
451␉}␊
452␉␊
453␉// Create a list of partitions on device(s).␊
454␉if (gScanSingleDrive) {␊
455␉␉scanBootVolumes(gBIOSDev, &bvCount);␊
456␉} else {␊
457␉␉scanDisks(gBIOSDev, &bvCount);␊
458␉}␊
459␉␊
460␉// Create a separated bvr chain using the specified filters.␊
461␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
462␉␊
463␉gBootVolume = selectBootVolume(bvChain);␊
464␉␊
465␉// Intialize module system ␊
466␉init_module_system();␊
467␊
468#if DEBUG␊
469␉printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n",␊
470␉␉␉ gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊
471␉printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n",␊
472␉␉␉ gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊
473␉getchar();␊
474#endif␊
475␊
476␉useGUI = true;␊
477␉// Override useGUI default␊
478␉getBoolForKey(kGUIKey, &useGUI, &bootInfo->chameleonConfig);␊
479␉if (useGUI && initGUI())␊
480␉{␊
481␉␉// initGUI() returned with an error, disabling GUI.␊
482␉␉useGUI = false;␊
483␉}␊
484␉␊
485␉setBootGlobals(bvChain);␊
486␉␊
487␉// Parse args, load and start kernel.␊
488␉while (1)␊
489␉{␊
490␉␉bool␉␉tryresume, tryresumedefault, forceresume;␊
491␉␉bool␉␉useKernelCache = false; // by default don't use prelink kernel cache␊
492␉␉const char␉*val;␊
493␉␉int␉␉␉len, ret = -1;␊
494␉␉long␉␉flags, sleeptime, time;␊
495␉␉void␉␉*binary = (void *)kLoadAddr;␊
496␉␉␊
497␉␉char bootFile[sizeof(bootInfo->bootFile)];␊
498␉␉char␉␉bootFilePath[512];␊
499␉␉char␉␉kernelCacheFile[512];␊
500␊
501␉␉// Initialize globals.␊
502␉␉sysConfigValid = false;␊
503␉␉gErrors␉␉ = false;␊
504␉␉␊
505␉␉status = getBootOptions(firstRun);␊
506␉␉firstRun = false;␊
507␉␉if (status == -1) continue;␊
508␉␉ ␊
509␉␉status = processBootOptions();␊
510␉␉// Status == 1 means to chainboot␊
511␉␉if ( status ==␉1 ) break;␊
512␉␉// Status == -1 means that the config file couldn't be loaded or that gBootVolume is NULL␊
513␉␉if ( status == -1 )␊
514␉␉{␊
515␉␉␉// gBootVolume == NULL usually means the user hit escape.␊
516␉␉␉if (gBootVolume == NULL)␊
517␉␉␉{␊
518␉␉␉␉freeFilteredBVChain(bvChain);␊
519␉␉␉␉␊
520␉␉␉␉if (gEnableCDROMRescan)␊
521␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊
522␉␉␉␉␊
523␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
524␉␉␉␉setBootGlobals(bvChain);␊
525␉␉␉␉setupDeviceList(&bootInfo->themeConfig);␊
526␉␉␉}␊
527␉␉␉continue;␊
528␉␉}␊
529␉␉␊
530␉␉// Other status (e.g. 0) means that we should proceed with boot.␊
531␉␉␊
532␉␉// Turn off any GUI elements␊
533␉␉if ( bootArgs->Video.v_display == GRAPHICS_MODE )␊
534␉␉{␊
535␉␉␉gui.devicelist.draw = false;␊
536␉␉␉gui.bootprompt.draw = false;␊
537␉␉␉gui.menu.draw = false;␊
538␉␉␉gui.infobox.draw = false;␊
539␉␉␉gui.logo.draw = false;␊
540␉␉␉drawBackground();␊
541␉␉␉updateVRAM();␊
542␉␉}␊
543␉␉␊
544␉␉// Find out which version mac os we're booting.␊
545␉␉getOSVersion();␊
546␊
547␉␉if (platformCPUFeature(CPU_FEATURE_EM64T)) {␊
548␉␉␉archCpuType = CPU_TYPE_X86_64;␊
549␉␉} else {␊
550␉␉␉archCpuType = CPU_TYPE_I386;␊
551␉␉}␊
552␊
553␉␉if (getValueForKey(karch, &val, &len, &bootInfo->chameleonConfig)) {␊
554␉␉␉if (strncmp(val, "i386", 4) == 0) {␊
555␉␉␉␉archCpuType = CPU_TYPE_I386;␊
556␉␉␉}␊
557␉␉}␊
558␉␉␊
559␉␉if (getValueForKey(kKernelArchKey, &val, &len, &bootInfo->chameleonConfig)) {␊
560␉␉␉if (strncmp(val, "i386", 4) == 0) {␊
561␉␉␉␉archCpuType = CPU_TYPE_I386;␊
562␉␉␉}␊
563␉␉}␊
564␊
565␉␉// Notify modules that we are attempting to boot␊
566␉␉execute_hook("PreBoot", NULL, NULL, NULL, NULL);␊
567␊
568␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->chameleonConfig)) {␊
569␉␉␉tryresume = true;␊
570␉␉␉tryresumedefault = true;␊
571␉␉} else {␊
572␉␉␉tryresumedefault = false;␊
573␉␉}␊
574␊
575␉␉if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->chameleonConfig)) {␊
576␉␉␉forceresume = false;␊
577␉␉}␊
578␉␉␊
579␉␉if (forceresume) {␊
580␉␉␉tryresume = true;␊
581␉␉␉tryresumedefault = false;␊
582␉␉}␊
583␉␉␊
584␉␉while (tryresume) {␊
585␉␉␉const char *tmp;␊
586␉␉␉BVRef bvr;␊
587␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->chameleonConfig))␊
588␉␉␉␉val = "/private/var/vm/sleepimage";␊
589␉␉␉␊
590␉␉␉// Do this first to be sure that root volume is mounted␊
591␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊
592␊
593␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊
594␉␉␉␉break;␊
595␉␉␉␊
596␉␉␉// Can't check if it was hibernation Wake=y is required␊
597␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊
598␉␉␉␉break;␊
599␉␉␉␊
600␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊
601␉␉␉␉break;␊
602␉␉␉␊
603␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊
604#if DEBUG␉␊
605␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",␊
606␉␉␉␉␉␉bvr->modTime-sleeptime);␊
607#endif␉␉␉␉ ␊
608␉␉␉␉break;␊
609␉␉␉}␊
610␊
611␉␉␉HibernateBoot((char *)val);␊
612␉␉␉break;␊
613␉␉}␊
614␉␉␊
615␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊
616␊
617␉␉// If boot from boot helper partitions and OS is Mountain Lion or Lion use prelink kernel.␊
618␉␉// We need to find a solution to load extra mkext with a prelink kernel.␊
619␉␉if (gBootVolume->flags & kBVFlagBooter && ((checkOSVersion("10.7")) || (checkOSVersion("10.8"))))␊
620␉␉␉useKernelCache = true;␊
621␉␉else␊
622␉␉␉useKernelCache = false; // by default don't use prelink kernel cache␊
623␊
624␉␉getBoolForKey(kUseKernelCache, &useKernelCache, &bootInfo->chameleonConfig);␊
625␊
626␉␉if (useKernelCache) do {␊
627␊
628␉␉␉// Determine the name of the Kernel Cache␊
629␉␉␉if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {␊
630␉␉␉␉if (val[0] == '\\')␊
631␉␉␉␉{␊
632␉␉␉␉␉len--;␊
633␉␉␉␉␉val++;␊
634␉␉␉␉}␊
635␉␉␉␉strlcpy(kernelCacheFile, val, len + 1);␊
636␉␉␉} else {␊
637␉␉␉␉kernelCacheFile[0] = 0; // Use default kernel cache file␊
638␉␉␉}␊
639␊
640␉␉␉if (gOverrideKernel && kernelCacheFile[0] == 0) {␊
641␉␉␉␉verbose("Using a non default kernel (%s) without specifying 'Kernel Cache' path, KernelCache will not be used\n",␊
642␉␉␉␉␉␉bootInfo->bootFile);␊
643␉␉␉␉useKernelCache = false;␊
644␉␉␉␉break;␊
645␉␉␉}␊
646␉␉␉if (gMKextName[0] != 0) {␊
647␉␉␉␉verbose("Using a specific MKext Cache (%s), KernelCache will not be used\n",␊
648␉␉␉␉␉␉gMKextName);␊
649␉␉␉␉useKernelCache = false;␊
650␉␉␉␉break;␊
651␉␉␉}␊
652␉␉␉if (gBootFileType != kBlockDeviceType)␊
653␉␉␉␉useKernelCache = false;␊
654␊
655␉␉} while(0);␊
656␊
657␉␉do {␊
658␉␉␉if (useKernelCache) {␊
659␉␉␉␉ret = LoadKernelCache(kernelCacheFile, &binary);␊
660␉␉␉␉if (ret >= 0)␊
661␉␉␉␉␉break;␊
662␉␉␉}␊
663␊
664␉␉␉bool bootFileWithDevice = false;␊
665␉␉␉// Check if bootFile start with a device ex: bt(0,0)/Extra/mach_kernel␊
666␉␉␉if (strncmp(bootInfo->bootFile,"bt(",3) == 0 ||␊
667␉␉␉␉strncmp(bootInfo->bootFile,"hd(",3) == 0 ||␊
668␉␉␉␉strncmp(bootInfo->bootFile,"rd(",3) == 0)␊
669␉␉␉␉bootFileWithDevice = true;␊
670␊
671␉␉␉// bootFile must start with a / if it not start with a device name␊
672␉␉␉if (!bootFileWithDevice && (bootInfo->bootFile)[0] != '/')␊
673␉␉␉␉sprintf(bootFile, "/%s", bootInfo->bootFile); // append a leading /␊
674␉␉␉else␊
675␉␉␉␉strlcpy(bootFile, bootInfo->bootFile, sizeof(bootFile));␊
676␊
677␉␉␉// Try to load kernel image from alternate locations on boot helper partitions.␊
678␉␉␉ret = -1;␊
679␉␉␉if ((gBootVolume->flags & kBVFlagBooter) && !bootFileWithDevice) {␊
680␉␉␉␉sprintf(bootFilePath, "com.apple.boot.P%s", bootFile);␊
681␉␉␉␉ret = GetFileInfo(NULL, bootFilePath, &flags, &time);␊
682␉␉␉␉if (ret == -1)␊
683␉␉␉␉{␊
684␉␉␉␉␉sprintf(bootFilePath, "com.apple.boot.R%s", bootFile);␊
685␉␉␉␉␉ret = GetFileInfo(NULL, bootFilePath, &flags, &time);␊
686␉␉␉␉␉if (ret == -1)␊
687␉␉␉␉␉{␊
688␉␉␉␉␉␉sprintf(bootFilePath, "com.apple.boot.S%s", bootFile);␊
689␉␉␉␉␉␉ret = GetFileInfo(NULL, bootFilePath, &flags, &time);␊
690␉␉␉␉␉}␊
691␉␉␉␉}␊
692␉␉␉}␊
693␉␉␉if (ret == -1) {␊
694␉␉␉␉// No alternate location found, using the original kernel image path.␊
695␉␉␉␉strlcpy(bootFilePath, bootFile,sizeof(bootFilePath));␊
696␉␉␉}␊
697␉␉␉␊
698␉␉␉verbose("Loading kernel %s\n", bootFilePath);␊
699␉␉␉ret = LoadThinFatFile(bootFilePath, &binary);␊
700␉␉␉if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊
701␉␉␉{␊
702␉␉␉␉archCpuType = CPU_TYPE_I386;␊
703␉␉␉␉ret = LoadThinFatFile(bootFilePath, &binary);␊
704␉␉␉}␊
705␉␉} while (0);␊
706␉␉␊
707␉␉clearActivityIndicator();␊
708␉␉␊
709#if DEBUG␊
710␉␉printf("Pausing...");␊
711␉␉sleep(8);␊
712#endif␊
713␉␉␊
714␉␉if (ret <= 0) {␊
715␉␉␉printf("Can't find %s\n", bootFile);␊
716␉␉␉sleep(1);␊
717␉␉␉␊
718␉␉␉if (gBootFileType == kNetworkDeviceType) {␊
719␉␉␉␉// Return control back to PXE. Don't unload PXE base code.␊
720␉␉␉␉gUnloadPXEOnExit = false;␊
721␉␉␉␉break;␊
722␉␉␉}␊
723␉␉␉pause();␊
724␊
725␉␉} else {␊
726␉␉␉/* Won't return if successful. */␊
727␉␉␉ret = ExecKernel(binary);␊
728␉␉}␊
729␉}␊
730␉␊
731␉// chainboot␊
732␉if (status == 1) {␊
733␉␉// if we are already in graphics-mode,␊
734␉␉if (getVideoMode() == GRAPHICS_MODE) {␊
735␉␉␉setVideoMode(VGA_TEXT_MODE, 0); // switch back to text mode.␊
736␉␉}␊
737␉}␊
738␉␊
739␉if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊
740␉␉nbpUnloadBaseCode();␊
741␉}␊
742}␊
743␊
744/*!␊
745␉Selects a new BIOS device, taking care to update the global state appropriately.␊
746 */␊
747/*␊
748static void selectBiosDevice(void)␊
749{␊
750␉struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊
751␉CacheReset();␊
752␉diskFreeMap(oldMap);␊
753␉oldMap = NULL;␊
754␉␊
755␉int dev = selectAlternateBootDevice(gBIOSDev);␊
756␉␊
757␉BVRef bvchain = scanBootVolumes(dev, 0);␊
758␉BVRef bootVol = selectBootVolume(bvchain);␊
759␉gBootVolume = bootVol;␊
760␉setRootVolume(bootVol);␊
761␉gBIOSDev = dev;␊
762}␊
763*/␊
764␊
765bool checkOSVersion(const char * version) ␊
766{␊
767␉return ((gMacOSVersion[0] == version[0]) && (gMacOSVersion[1] == version[1])␊
768␉␉␉&& (gMacOSVersion[2] == version[2]) && (gMacOSVersion[3] == version[3]));␊
769}␊
770␊
771static void getOSVersion()␊
772{␊
773␉strlcpy(gMacOSVersion, gBootVolume->OSVersion, sizeof(gMacOSVersion));␊
774}␊
775␊
776#define BASE 65521L /* largest prime smaller than 65536 */␊
777#define NMAX 5000␊
778// NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊
779␊
780#define DO1(buf, i)␉{s1 += buf[i]; s2 += s1;}␊
781#define DO2(buf, i)␉DO1(buf, i); DO1(buf, i + 1);␊
782#define DO4(buf, i)␉DO2(buf, i); DO2(buf, i + 2);␊
783#define DO8(buf, i)␉DO4(buf, i); DO4(buf, i + 4);␊
784#define DO16(buf)␉DO8(buf, 0); DO8(buf, 8);␊
785␊
786unsigned long Adler32(unsigned char *buf, long len)␊
787{␊
788␉unsigned long s1 = 1; // adler & 0xffff;␊
789␉unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊
790␉unsigned long result;␊
791␉int k;␊
792␉␊
793␉while (len > 0) {␊
794␉␉k = len < NMAX ? len : NMAX;␊
795␉␉len -= k;␊
796␉␉while (k >= 16) {␊
797␉␉␉DO16(buf);␊
798␉␉␉buf += 16;␊
799␉␉␉k -= 16;␊
800␉␉}␊
801␉␉if (k != 0) do {␊
802␉␉␉s1 += *buf++;␊
803␉␉␉s2 += s1;␊
804␉␉} while (--k);␊
805␉␉s1 %= BASE;␊
806␉␉s2 %= BASE;␊
807␉}␊
808␉result = (s2 << 16) | s1;␊
809␉return OSSwapHostToBigInt32(result);␊
810}␊
811

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