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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 "platform.h"␊
59#include "graphics.h"␊
60#ifndef OPTION_ROM␊
61#include "appleboot.h"␊
62#endif␊
63#include "modules.h"␊
64#include "xml.h"␊
65␊
66#ifndef DEBUG_BOOT␊
67#define DEBUG_BOOT 0␊
68#endif␊
69␊
70#if DEBUG_BOOT␊
71#define DBG(x...)␉␉printf(x)␊
72#else␊
73#define DBG(x...)␉␉␊
74#endif␊
75␊
76␊
77typedef struct platform_info {␊
78␉char platformName[PLATFORM_NAME_LEN];␊
79␉char rootPath[ROOT_PATH_LEN];␊
80} PlatformInfo;␊
81␊
82␊
83char *gboardproduct = NULL;␊
84char *gPlatformName = NULL;␊
85//char gRootPath[256];␊
86long gBootMode; /* defaults to 0 == kBootModeNormal */␊
87bool gOverrideKernel;␊
88char gBootKernelCacheFile[512];␊
89char gMKextName[512];␊
90char gMacOSVersion[8];␊
91char *gRootDevice = NULL;␊
92bool uuidSet = false;␊
93#ifndef OPTION_ROM␊
94bool gEnableCDROMRescan;␊
95bool gScanSingleDrive;␊
96#endif␊
97␊
98int bvCount = 0;␊
99//int␉menucount = 0;␊
100int gDeviceCount = 0; ␊
101␊
102BVRef bvr;␊
103BVRef menuBVR;␊
104BVRef bvChain;␊
105␊
106//static void selectBiosDevice(void);␊
107␊
108static bool getOSVersion(char *str);␊
109static void getRootDevice();␊
110void getKernelCachePath();␊
111␊
112#ifdef NBP_SUPPORT␊
113static bool gUnloadPXEOnExit = false;␊
114#endif␊
115␊
116/*␊
117 * How long to wait (in seconds) to load the␊
118 * kernel after displaying the "boot:" prompt.␊
119 */␊
120#define kBootErrorTimeout 5␊
121␊
122/*␊
123 * Default path to kernel cache file␊
124 */␊
125#define kDefaultCachePath "/System/Library/Caches/com.apple.kext.caches/Startup/kernelcache"␊
126␊
127//==========================================================================␊
128// Zero the BSS.␊
129␊
130static void zeroBSS(void)␊
131{␊
132␉extern char _DATA__bss__begin, _DATA__bss__end;␊
133␉extern char _DATA__common__begin, _DATA__common__end;␊
134␉␊
135␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊
136␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊
137}␊
138␊
139//==========================================================================␊
140// Malloc error function␊
141␊
142#ifdef SAFE_MALLOC␊
143static inline void malloc_error(char *addr, size_t size, const char *file, int line)␊
144{␊
145 stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊
146}␊
147#else␊
148static inline void malloc_error(char *addr, size_t size)␊
149{␊
150 printf("\nMemory allocation error (0x%x, 0x%x)\n", (unsigned)addr, (unsigned)size);␊
151 asm volatile ("hlt");␊
152}␊
153#endif␊
154␊
155//==========================================================================␊
156//Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊
157//␊
158void initialize_runtime(void)␊
159{␊
160␉zeroBSS();␊
161␉malloc_init(0, 0, 0, malloc_error);␊
162}␊
163␊
164//==========================================================================␊
165// execKernel - Load the kernel image (mach-o) and jump to its entry point.␊
166␊
167static int ExecKernel(void *binary)␊
168{␊
169 entry_t kernelEntry;␊
170 int ret;␊
171␉␊
172 bootArgs->kaddr = bootArgs->ksize = 0;␊
173␉␊
174␉if(gMacOSVersion[3] <= '6')␊
175␉{␊
176␉␉bootArgs->Version = kBootArgsVersion1;␉␉␊
177␉␉bootArgs->Revision = gMacOSVersion[3];␉␊
178␉}␊
179␉else ␊
180␉{␉␉␊
181#if kBootArgsVersion > 1␊
182␉␉␊
183␉␉bootArgs->Version = kBootArgsVersion;␉␉␊
184␉␉bootArgs->Revision = kBootArgsRevision;␊
185#else␊
186␉␉bootArgs->Version = 2;␊
187 bootArgs->Revision = 0;␊
188#endif␊
189␉}␊
190␉␊
191␉execute_hook("ExecKernel", (void*)binary, NULL, NULL, NULL, NULL, NULL);␊
192␊
193 ret = DecodeKernel(binary,␊
194 &kernelEntry,␊
195 (char **) &bootArgs->kaddr,␊
196 (int *)&bootArgs->ksize );␊
197␊
198 if ( ret != 0 )␊
199 return ret;␊
200␉␊
201 // Reserve space for boot args for 10.7 only (for 10.6 and earlier, we will convert (to legacy) the structure and reserve kernel memory for it later.)␊
202␉if(gMacOSVersion[3] == '7')␊
203 reserveKernBootStruct();␊
204␉␊
205 // Load boot drivers from the specifed root path.␊
206␉␊
207 if (!gHaveKernelCache) {␊
208␉␉LoadDrivers("/");␊
209 }␊
210␉␊
211#if TEXT_SPINNER␊
212␉clearActivityIndicator();␊
213#endif␊
214␉␊
215 if (gErrors) {␊
216 printf("Errors encountered while starting up the computer.\n");␊
217 printf("Pausing %d seconds...\n", kBootErrorTimeout);␊
218 sleep(kBootErrorTimeout);␊
219 }␊
220␉␊
221␉execute_hook("md0Ramdisk", NULL, NULL, NULL, NULL, NULL, NULL);␊
222␊
223 setupFakeEfi();␊
224␉␉␊
225 verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊
226#ifdef NBP_SUPPORT␊
227 // Cleanup the PXE base code.␊
228␉␊
229 if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊
230␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊
231 {␊
232 ␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊
233 sleep(2);␊
234 }␊
235 }␊
236#endif ␊
237 bool wait = false;␊
238␉const char *strval = 0;␊
239␉int dummysize /*= 0*/;␉␊
240␉␊
241␉getBoolForKey(kWaitForKeypressKey, &wait, &bootInfo->bootConfig);␊
242␉␊
243␉if (getValueForBootKey(bootArgs->CommandLine, "-wait", &strval, &dummysize))␊
244␉{␊
245␉␉wait = true;␊
246␉␉␊
247␉␉if (strval && ((strcmp(strval, "no") == 0) || (strcmp(strval, "No") == 0))) {␊
248␉␉␉wait = false;␊
249␉␉} ␉␉␊
250␉}␊
251␉␉␊
252␉if (wait == true) {␊
253␉␉pause();␊
254␉}␊
255␉␉␉␊
256␉if ((execute_hook("GUI_ExecKernel", NULL, NULL, NULL, NULL, NULL, NULL) != EFI_SUCCESS)) // (bootArgs->Video.v_display == VGA_TEXT_MODE)␉␊
257␉{␊
258#if UNUSED␊
259␉␉setVideoMode( GRAPHICS_MODE, 0 );␊
260#else␊
261␉␉setVideoMode( GRAPHICS_MODE );␊
262#endif␊
263␉␉␊
264#ifndef OPTION_ROM␊
265␉␉ ␊
266␉␉if(!gVerboseMode)␊
267␉␉{␉␉␉␊
268␉␉␉drawColorRectangle(0, 0, DEFAULT_SCREEN_WIDTH, DEFAULT_SCREEN_HEIGHT, 0x01); ␊
269␉␉␊
270␉␉␉uint8_t *appleBootPict; ␊
271␉␉␉uint16_t bootImageWidth = kAppleBootWidth; ␊
272␉␉␉uint16_t bootImageHeight = kAppleBootHeight; ␊
273␉␉␉uint8_t *bootImageData = NULL; ␉␉ ␊
274␉␉␉uint16_t x, y;␊
275␉␉␉␊
276␉␉␉unsigned long screen_params[4] = {DEFAULT_SCREEN_WIDTH, DEFAULT_SCREEN_HEIGHT, 32, 0};␉// here we store the used screen resolution␊
277␉␉␉// Prepare the data for the default Apple boot image. ␊
278␉␉␉appleBootPict = (uint8_t *) decodeRLE(gAppleBootPictRLE, kAppleBootRLEBlocks, bootImageWidth * bootImageHeight); ␊
279␉␉␉if (appleBootPict) { ␊
280␉␉␉␉convertImage(bootImageWidth, bootImageHeight, appleBootPict, &bootImageData); ␊
281␉␉␉␉if (bootImageData) {␉␊
282␉␉␉␉␉x = (screen_params[0] - MIN(kAppleBootWidth, screen_params[0])) / 2; ␊
283␉␉␉␉␉y = (screen_params[1] - MIN(kAppleBootHeight, screen_params[1])) / 2; ␊
284␉␉␉␉␉drawDataRectangle(x, y, kAppleBootWidth, kAppleBootHeight, bootImageData);␊
285␉␉␉␉␉free(bootImageData);␊
286␉␉␉␉}␊
287␉␉␉␉free(appleBootPict); ␊
288␉␉␉}␊
289␉␉␊
290␉␉}␊
291#endif␊
292␉}␊
293 ␊
294 finalizeEFIConfigTable();␊
295 ␊
296␉setupBooterLog();␊
297␉␊
298 finalizeBootStruct(); ␊
299 ␊
300␉␊
301␉if (gMacOSVersion[3] <= '6') ␊
302␉␉reserveKernLegacyBootStruct(); ␉␉␊
303␉␊
304␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL, NULL, NULL);␉// Notify modules that the kernel is about to be started␊
305#if UNUSED␊
306␉turnOffFloppy();␊
307#endif␊
308#if BETA␊
309#include "smp.h"␊
310#include "apic.h"␊
311␉IMPS_LAPIC_WRITE(LAPIC_LVT1, LAPIC_ICR_DM_NMI);␊
312#endif␊
313␉␊
314␉if (gMacOSVersion[3] <= '6') {␉␉␊
315␉␉␊
316␉␉// Jump to kernel's entry point. There's no going back now. XXX LEGACY OS XXX␊
317␉␉startprog( kernelEntry, bootArgsLegacy );␊
318␉}␉␊
319␉␉␉␊
320␉outb(0x21, 0xff); /* Maskout all interrupts Pic1 */␊
321␉outb(0xa1, 0xff); /* Maskout all interrupts Pic2 */␊
322␉␉␊
323␉// Jump to kernel's entry point. There's no going back now. XXX LION XXX␊
324 startprog( kernelEntry, bootArgs );␊
325␉␊
326 // Not reached␊
327␉␊
328 return 0;␊
329}␊
330␊
331//==========================================================================␊
332// This is the entrypoint from real-mode which functions exactly as it did␊
333// before. Multiboot does its own runtime initialization, does some of its␊
334// own things, and then calls common_boot.␊
335void boot(int biosdev)␊
336{␊
337␉initialize_runtime();␊
338␉// Enable A20 gate before accessing memory above 1Mb.␊
339␉enableA20();␊
340␉common_boot(biosdev);␊
341}␊
342␊
343//==========================================================================␊
344// The 'main' function for the booter. Called by boot0 when booting␊
345// from a block device, or by the network booter.␊
346//␊
347// arguments:␊
348// biosdev - Value passed from boot1/NBP to specify the device␊
349// that the booter was loaded from.␊
350//␊
351// If biosdev is kBIOSDevNetwork, then this function will return if␊
352// booting was unsuccessful. This allows the PXE firmware to try the␊
353// next boot device on its list.␊
354void common_boot(int biosdev)␊
355{␊
356 int status;␊
357 char *bootFile;␊
358 bool quiet;␊
359 bool firstRun = true;␊
360 bool instantMenu;␊
361#ifndef OPTION_ROM␊
362 bool rescanPrompt;␊
363#endif␊
364 unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊
365 unsigned int denyBVFlags = kBVFlagEFISystem;␊
366␉␊
367#ifdef NBP_SUPPORT␊
368 // Set reminder to unload the PXE base code. Neglect to unload␊
369 // the base code will result in a hang or kernel panic.␊
370 gUnloadPXEOnExit = true;␊
371#endif␊
372 // Record the device that the booter was loaded from.␊
373 gBIOSDev = biosdev & kBIOSDevMask;␊
374␉␊
375␉␊
376␉␊
377 // Setup VGA text mode.␊
378 // Not sure if it is safe to call setVideoMode() before the␊
379 // config table has been loaded. Call video_mode() instead.␊
380#if DEBUG␊
381 printf("before video_mode\n");␊
382#endif␊
383 video_mode( 2 ); // 80x25 mono text mode.␊
384#if DEBUG␊
385 printf("after video_mode\n");␊
386#endif␊
387#if !TEXT_SPINNER␊
388␉printf("Starting Chameleon ...\n");␊
389#endif␊
390␉␊
391␉initBooterLog();␊
392␉␊
393␉// Initialize boot info structure.␊
394 initKernBootStruct();␊
395␉␊
396␉␊
397 // Scan and record the system's hardware information.␊
398 scan_platform();␊
399␉␊
400 // First get info for boot volume.␊
401 scanBootVolumes(gBIOSDev, 0);␊
402 bvChain = getBVChainForBIOSDev(gBIOSDev);␊
403 setBootGlobals(bvChain);␊
404␉␊
405 // Load boot.plist config file␊
406 status = loadSystemConfig(&bootInfo->bootConfig);␊
407␉␊
408␉Platform->CPU.isServer = false; ␊
409 getBoolForKey(kIsServer, &Platform->CPU.isServer, &bootInfo->bootConfig); // set this as soon as possible␊
410␉␊
411 if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊
412 gBootMode |= kBootModeQuiet;␊
413 }␊
414␉␊
415 // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊
416 if (getBoolForKey(kInsantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {␊
417 firstRun = false;␊
418 }␊
419␉␊
420#ifndef OPTION_ROM␊
421␉// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊
422 if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {␊
423 gScanSingleDrive = true;␊
424 }␊
425␉␊
426␉// Create a list of partitions on device(s).␊
427 if (gScanSingleDrive)␊
428␉{␊
429␉␉scanBootVolumes(gBIOSDev, &bvCount);␊
430 } ␊
431␉else ␊
432#endif␊
433␉{␊
434#if UNUSED␊
435 scanDisks(gBIOSDev, &bvCount);␊
436#else␊
437 scanDisks();␊
438#endif␊
439 }␊
440␉␊
441␉// Create a separated bvr chain using the specified filters.␊
442 bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
443␉gBootVolume = selectBootVolume(bvChain);␊
444␉␊
445␉// Intialize module system␊
446␉EFI_STATUS sysinit = init_module_system();␊
447␉if((sysinit == EFI_SUCCESS) || (sysinit == EFI_ALREADY_STARTED)/*should never happen*/ ) ␊
448␉{␊
449␉␉load_all_modules();␊
450␉}␊
451␉␉␉␊
452 // Loading preboot ramdisk if exists.␊
453␉execute_hook("loadPrebootRAMDisk", NULL, NULL, NULL, NULL, NULL, NULL);␉␉␊
454␊
455#ifndef OPTION_ROM␊
456␊
457 // Disable rescan option by default␊
458 gEnableCDROMRescan = false;␊
459␉␊
460 // Enable it with Rescan=y in system config␊
461 if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {␊
462 gEnableCDROMRescan = true;␊
463 }␊
464␉␊
465 // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊
466 rescanPrompt = false;␊
467 if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊
468 gEnableCDROMRescan = promptForRescanOption();␊
469 }␊
470#endif␉␊
471␉␊
472#if DEBUG␊
473 printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊
474 printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊
475 getc();␊
476#endif␊
477␉␉␉␊
478 setBootGlobals(bvChain);␊
479␉␊
480␉// Display the GUI␊
481␉execute_hook("GUI_Display", NULL, NULL, NULL, NULL, NULL, NULL);␊
482␊
483 // Parse args, load and start kernel.␊
484 while (1) {␊
485 const char *val;␊
486 int len;␊
487 int trycache = 0;␊
488 long flags, cachetime, kerneltime, exttime;␊
489#ifdef BOOT_HELPER_SUPPORT␉␉␊
490␉␉long time;␊
491#endif␊
492 int ret = -1;␊
493 void *binary = (void *)kLoadAddr;␊
494 ␉␉␊
495 // additional variable for testing alternate kernel image locations on boot helper partitions.␊
496 char bootFileSpec[512];␊
497␉␉␊
498 // Initialize globals.␊
499␉␉␊
500 sysConfigValid = false;␊
501 gErrors = false;␊
502␉␉␊
503 status = getBootOptions(firstRun);␊
504 firstRun = false;␊
505 if (status == -1) continue;␊
506␉␉␊
507 status = processBootOptions();␊
508 // Status==1 means to chainboot␊
509 if ( status == 1 ) break;␊
510 // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊
511 if ( status == -1 )␊
512 {␊
513␉␉␉// gBootVolume == NULL usually means the user hit escape.␊
514␉␉␉if(gBootVolume == NULL)␊
515␉␉␉{␊
516␉␉␉␉freeFilteredBVChain(bvChain);␊
517#ifndef OPTION_ROM␊
518␉␉␉␉if (gEnableCDROMRescan)␊
519␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊
520#endif␊
521␉␉␉␉␊
522␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊
523␉␉␉␉setBootGlobals(bvChain);␊
524␉␉␉}␊
525␉␉␉continue;␊
526 }␊
527␉␉␉␉␉␉␊
528 // Other status (e.g. 0) means that we should proceed with boot.␊
529␉␉execute_hook("GUI_PreBoot", NULL, NULL, NULL, NULL, NULL, NULL);␊
530␉␉␊
531␉␉// Find out which version mac os we're booting.␊
532␉␉getOSVersion(gMacOSVersion);␊
533␉␉␊
534␉␉//if (platformCPUFeature(CPU_FEATURE_EM64T)) { ␊
535 if (cpu_mode_is64bit()) {␊
536␉␉␉archCpuType = CPU_TYPE_X86_64;␊
537␉␉} else {␊
538␉␉␉archCpuType = CPU_TYPE_I386;␊
539␉␉}␊
540␉␉if (getValueForKey(karch, &val, &len, &bootInfo->bootConfig)) {␊
541␉␉␉if (strncmp(val, "i386", 4) == 0) {␊
542␉␉␉␉archCpuType = CPU_TYPE_I386;␊
543␉␉␉}␊
544␉␉}␊
545␉␉␊
546␉␉getRootDevice();␊
547␊
548␉␉// Notify to all modules that we are attempting to boot␊
549␉␉execute_hook("PreBoot", NULL, NULL, NULL, NULL, NULL, NULL); ␊
550␉␉␊
551␉␉if (execute_hook("getProductNamePatched", NULL, NULL, NULL, NULL, NULL, NULL) != EFI_SUCCESS)␉␉␉␉␉␊
552␉␉␉readSMBIOS(thePlatformName); // read smbios Platform Name␊
553␉␉␊
554␉␉␊
555␉␉if (!getValueForBootKey(bootArgs->CommandLine, kIgnorePrelinkKern, &val, &len)) { ␉␉␊
556␉␉␉␉␊
557␉␉␉getKernelCachePath(); ␊
558␉␉␉␊
559␉␉}␊
560␉␉␊
561␉␉// Check for cache file.␊
562␉␉trycache = (((gBootMode & kBootModeSafe) == 0) &&␊
563␉␉␉␉␉!gOverrideKernel &&␊
564␉␉␉␉␉(gBootFileType == kBlockDeviceType) &&␊
565␉␉␉␉␉(gMKextName[0] == '\0') &&␊
566␉␉␉␉␉(gBootKernelCacheFile[0] != '\0'));␊
567␉␉␊
568␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊
569␉␉␊
570 if (trycache ) do {␊
571␉␉␉␊
572 // if we haven't found the kernel yet, don't use the cache␊
573 ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊
574 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊
575 trycache = 0;␊
576␉␉␉␉bootInfo->adler32 = 0;␊
577 break;␊
578 }␊
579 ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊
580 if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊
581 || (cachetime < kerneltime)) {␊
582␉␉␉␉trycache = 0;␊
583␉␉␉␉bootInfo->adler32 = 0;␊
584␉␉␉␉break;␉␉␉␉ ␊
585 } ␊
586 ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊
587 if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊
588 && (cachetime < exttime)) {␊
589 trycache = 0;␊
590␉␉␉␉bootInfo->adler32 = 0;␊
591 break;␊
592 }␊
593 if (kerneltime > exttime) {␊
594 exttime = kerneltime;␊
595 }␊
596 if (cachetime != (exttime + 1)) {␊
597 trycache = 0;␊
598␉␉␉␉bootInfo->adler32 = 0;␊
599 break;␊
600 }␊
601 } while (0);␊
602␉␉␊
603 do {␊
604 if (trycache) {␊
605 bootFile = gBootKernelCacheFile;␊
606 verbose("Loading kernel cache %s\n", bootFile);␊
607␉␉␉␉if (gMacOSVersion[3] == '7') {␉␉␉␉␉␊
608␉␉␉␉␉ret = LoadThinFatFile(bootFile, &binary);␊
609␉␉␉␉␉if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊
610␉␉␉␉␉{␊
611␉␉␉␉␉␉archCpuType = CPU_TYPE_I386;␊
612␉␉␉␉␉␉ret = LoadThinFatFile(bootFile, &binary);␉␉␉␉␊
613␉␉␉␉␉}␊
614␉␉␉␉} else {␊
615␉␉␉␉␉ret = LoadFile(bootFile);␊
616␉␉␉␉␉binary = (void *)kLoadAddr;␊
617␉␉␉␉}␊
618␉␉␉␉␊
619 if (ret >= 0) {␊
620 break;␊
621 }␊
622␉␉␉␉␊
623 }␊
624␉␉␉bootInfo->adler32 = 0;␊
625 bootFile = bootInfo->bootFile;␊
626#ifdef BOOT_HELPER_SUPPORT␊
627␉␉␉␊
628 // Try to load kernel image from alternate locations on boot helper partitions.␊
629 sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊
630 ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
631 ␉ ␉ if (ret == -1)␊
632 ␉ ␉ {␊
633␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊
634␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
635␉␉␉␉if (ret == -1)␊
636␉␉␉␉{␊
637␉␉␉␉␉sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊
638␉␉␉␉␉ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊
639␉␉␉␉␉if (ret == -1)␊
640␉␉␉␉␉{␊
641␉␉␉␉␉␉// Not found any alternate locations, using the original kernel image path.␊
642␉␉␉␉␉␉strcpy(bootFileSpec, bootFile);␊
643␉␉␉␉␉}␊
644␉␉␉␉}␊
645 }␊
646#else␊
647␉␉␉strcpy(bootFileSpec, bootFile);␊
648#endif␊
649␉␉␉␊
650 verbose("Loading kernel %s\n", bootFileSpec);␊
651 ret = LoadThinFatFile(bootFileSpec, &binary);␊
652 if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊
653 {␊
654␉␉␉␉archCpuType = CPU_TYPE_I386;␊
655␉␉␉␉ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊
656 }␊
657␉␉␉␊
658 } while (0);␊
659#if TEXT_SPINNER␊
660 clearActivityIndicator();␊
661#endif␊
662␉␉␊
663#if DEBUG␊
664 printf("Pausing...");␊
665 sleep(8);␊
666#endif␊
667␉␉␊
668 if (ret <= 0) {␊
669␉␉␉printf("Can't find %s\n", bootFile);␊
670␉␉␉␊
671␉␉␉sleep(1);␊
672#ifdef NBP_SUPPORT␊
673 if (gBootFileType == kNetworkDeviceType) {␊
674 // Return control back to PXE. Don't unload PXE base code.␊
675 gUnloadPXEOnExit = false;␊
676 break;␊
677 }␊
678#endif␊
679 } else {␊
680 /* Won't return if successful. */␊
681 ret = ExecKernel(binary);␊
682 }␊
683 }␊
684 ␊
685 // chainboot␊
686 if (status==1) {␊
687␉␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊
688#if UNUSED␊
689␉␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊
690#else␊
691␉␉␉setVideoMode(VGA_TEXT_MODE);␉// switch back to text mode␊
692#endif␊
693␉␉}␊
694 }␊
695#ifdef NBP_SUPPORT␊
696 if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊
697␉␉nbpUnloadBaseCode();␊
698 }␊
699#endif␊
700}␊
701␊
702void getKernelCachePath()␊
703{␊
704␉long flags, cachetime;␊
705␉int ret = -1;␊
706␉␊
707␉if(gMacOSVersion[3] == '7'){␉␉␉␉␉␊
708␉␉sprintf(gBootKernelCacheFile, "%s", kDefaultCachePath);␊
709␉}␊
710␉else if(gMacOSVersion[3] <= '6')␊
711␉{␉␉␉ ␊
712␉␉␊
713␉␉PlatformInfo *platformInfo = malloc(sizeof(PlatformInfo));␊
714␉␉if (platformInfo) {␊
715␉␉␉␊
716␉␉␉bzero(platformInfo, sizeof(PlatformInfo));␊
717␉␉␉␊
718␉␉␉if (gPlatformName)␊
719␉␉␉␉strlcpy(platformInfo->platformName,gPlatformName, sizeof(platformInfo->platformName)+1);␊
720␉␉␉␊
721␉␉␉if (gRootDevice) {␊
722␉␉␉␉char *rootPath_p = platformInfo->rootPath;␊
723␉␉␉␉int len = strlen(gRootDevice) + 1;␊
724␉␉␉␉if ((unsigned)len > sizeof(platformInfo->rootPath)) {␊
725␉␉␉␉␉len = sizeof(platformInfo->rootPath);␊
726␉␉␉␉}␊
727␉␉␉␉memcpy(rootPath_p, gRootDevice,len);␊
728␉␉␉␉␊
729␉␉␉␉rootPath_p += len;␊
730␉␉␉␉␊
731␉␉␉␉len = strlen(bootInfo->bootFile);␊
732␉␉␉␉␊
733␉␉␉␉if ((unsigned)(rootPath_p - platformInfo->rootPath + len) >=␊
734␉␉␉␉␉sizeof(platformInfo->rootPath)) {␊
735␉␉␉␉␉␊
736␉␉␉␉␉len = sizeof(platformInfo->rootPath) -␊
737␉␉␉␉␉(rootPath_p - platformInfo->rootPath);␊
738␉␉␉␉} ␊
739␉␉␉␉memcpy(rootPath_p, bootInfo->bootFile, len);␉␉␉␉␉␉␉␊
740␉␉␉␉␊
741␉␉␉}␉␊
742␉␉␉␊
743␉␉␉if (!platformInfo->platformName[0] || !platformInfo->rootPath[0]) {␊
744␉␉␉␉platformInfo->platformName[0] = platformInfo->rootPath[0] = 0;␊
745␉␉␉}␊
746␉␉␉//memcpy(gRootPath,platformInfo->rootPath, sizeof(platformInfo->rootPath));␊
747␉␉␉␊
748␉␉␉␊
749␉␉␉bootInfo->adler32 = OSSwapHostToBigInt32(local_adler32((unsigned char *)platformInfo, sizeof(*platformInfo)));␊
750␉␉␉␊
751␉␉␉free(platformInfo);␉␊
752␉␉}␊
753␉␉␊
754␉␉DBG("Adler32: %08lX\n",bootInfo->adler32);␊
755␉␉␊
756␉␉if (gMacOSVersion[3] < '6') {␊
757␉␉␉sprintf(gBootKernelCacheFile, "%s.%08lX", "/System/Library/Caches/com.apple.kernelcaches/kernelcache",bootInfo->adler32);␊
758␉␉␉ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊
759␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊
760␉␉␉␉bootInfo->adler32 = 0;␊
761␉␉␉␉sprintf(gBootKernelCacheFile, "%s", "/System/Library/Caches/com.apple.kernelcaches/kernelcache"); ␊
762␉␉␉}␉␉␉␉␉␉␊
763␉␉} else␊
764␉␉␉sprintf(gBootKernelCacheFile, "%s_%s.%08lX", kDefaultCachePath, (archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64", bootInfo->adler32); //Snow Leopard␊
765␉␉␊
766␉␉␊
767␉}␊
768}␊
769␊
770// Maximum config table value size␊
771#define VALUE_SIZE 2048␊
772static void getRootDevice()␊
773{␊
774␉const char *val = 0;␊
775 int cnt = 0;␊
776␉␊
777␉if (getValueForKey(kBootUUIDKey, &val, &cnt, &bootInfo->bootConfig)){␊
778␉␉uuidSet = true;␉␉␊
779␉␉␊
780 } else {␊
781␉␉if (getValueForBootKey(bootArgs->CommandLine, kRootDeviceKey, &val, &cnt)) {␊
782␉␉␉if (*val == '*' && *(val + 1) != '/' && *(val + 1) != 'u') { ␊
783␉␉␉␉val += 1; //skip the *␊
784␉␉␉␉uuidSet = true;␉␉␉␉␊
785␉␉␉␉␊
786␉␉␉} else if (*val == '*' && *(val + 1) == 'u') {␊
787␉␉␉␉␊
788␉␉␉␉if ( getValueForKey( kBootDeviceKey, &val, &cnt, &bootInfo->bootConfig)) ␊
789␉␉␉␉␉uuidSet = true;␉␉␉␉␊
790␉␉␉␉␊
791␉␉␉} ␉␉␉␊
792␉␉} else {␊
793#ifdef BOOT_HELPER_SUPPORT␊
794␉␉␉//␊
795␉␉␉// Try an alternate method for getting the root UUID on boot helper partitions.␊
796␉␉␉//␊
797␉␉␉if (gBootVolume->flags & kBVFlagBooter)␊
798␉␉␉{␊
799␉␉␉␉if((loadHelperConfig(&bootInfo->helperConfig) == 0)␊
800␉␉␉␉ && getValueForKey(kHelperRootUUIDKey, &val, &cnt, &bootInfo->helperConfig) )␊
801␉␉␉␉{␊
802␉␉␉␉␉getValueForKey(kHelperRootUUIDKey, &val, &cnt, &bootInfo->helperConfig);␊
803␉␉␉␉␉uuidSet = true;␊
804␉␉␉␉␉goto out;␊
805␉␉␉␉}␊
806␉␉␉}␊
807#endif␊
808␉␉␉␊
809␉␉␉if ( getValueForKey( kBootDeviceKey, &val, &cnt, &bootInfo->bootConfig)) {␊
810␉␉␉␉extern int ArgCntRemaining;␊
811␉␉␉␉uuidSet = false;␊
812␉␉␉␉char * valueBuffer;␊
813␉␉␉␉valueBuffer = malloc(VALUE_SIZE);␊
814␉␉␉␉char * argP = bootArgs->CommandLine;␊
815␉␉␉␉valueBuffer[0] = '*';␊
816␉␉␉␉cnt++;␊
817␉␉␉␉strlcpy(valueBuffer + 1, val, cnt);␉␉␉␉␊
818␉␉␉␉if (!copyArgument( kRootDeviceKey, valueBuffer, cnt, &argP, &ArgCntRemaining))␊
819␉␉␉␉{␊
820␉␉␉␉␉free(valueBuffer);␊
821␉␉␉␉␉printf("Error: boot arguments too long, unable to set root device !!");␊
822␉␉␉␉␉getc();␊
823␉␉␉␉␉return;␊
824␉␉␉␉}␊
825␉␉␉␉free(valueBuffer);␊
826␉␉␉␉goto out;␊
827␉␉␉}␊
828␉␉␉␊
829␉␉␉if (gBootVolume->fs_getuuid && gBootVolume->fs_getuuid (gBootVolume, bootInfo->uuidStr) == 0) {␊
830␉␉␉␉verbose("Setting boot-uuid to: %s\n", bootInfo->uuidStr);␊
831␉␉␉␉uuidSet = true;␊
832␉␉␉␉gRootDevice = bootInfo->uuidStr;␊
833␉␉␉␉return;␊
834␉␉␉}␊
835␉␉␊
836␉␉}␉␊
837␉}␊
838␉␉␊
839out:␉␊
840␉verbose("Setting %s to: %s\n", uuidSet ? kBootUUIDKey : "root device", (char* )val); ␊
841␉gRootDevice = (char* )val;␊
842}␊
843␊
844static bool getOSVersion(char *str)␊
845{␊
846␉bool valid = false;␊
847␉config_file_t systemVersion;␊
848␉const char *val;␊
849␉int len;␊
850␉␊
851␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊
852␉{␊
853␉␉valid = true;␊
854␉}␊
855␉else if (!loadConfigFile("System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊
856␉{␊
857␉␉valid = true;␊
858␉}␊
859␉␊
860␉if (valid)␊
861␉{␊
862␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion))␊
863␉␉{␊
864␉␉␉// getValueForKey uses const char for val␊
865␉␉␉// so copy it and trim␊
866␉␉␉*str = '\0';␊
867␉␉␉strncat(str, val, MIN(len, 4));␊
868␉␉}␊
869␉␉else␊
870␉␉␉valid = false;␊
871␉}␊
872␉␊
873␉return valid;␊
874}␊
875␊
876unsigned long␊
877local_adler32( unsigned char * buffer, long length )␊
878{␊
879 long cnt;␊
880 unsigned long result, lowHalf, highHalf;␊
881 ␊
882 lowHalf = 1;␊
883 highHalf = 0;␊
884␉␊
885␉for ( cnt = 0; cnt < length; cnt++ )␊
886 {␊
887 if ((cnt % 5000) == 0)␊
888 {␊
889 lowHalf %= 65521L;␊
890 highHalf %= 65521L;␊
891 }␊
892␉␉␊
893 lowHalf += buffer[cnt];␊
894 highHalf += lowHalf;␊
895 }␊
896␉␊
897␉lowHalf %= 65521L;␊
898␉highHalf %= 65521L;␊
899␉␊
900␉result = (highHalf << 16) | lowHalf;␊
901␉␊
902␉return result;␊
903}␊
904

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