1 /* 2 * Copyright (c) 1998-2010 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29 #include <libkern/c++/OSUnserialize.h> 30 #include <libkern/c++/OSKext.h> 31 #include <libkern/version.h> 32 #include <IOKit/IORegistryEntry.h> 33 #include <IOKit/IODeviceTreeSupport.h> 34 #include <IOKit/IOCatalogue.h> 35 #include <IOKit/IOUserClient.h> 36 #include <IOKit/IOMemoryDescriptor.h> 37 #include <IOKit/IOPlatformExpert.h> 38 #include <IOKit/IOLib.h> 39 #include <IOKit/IOKitKeys.h> 40 #include <IOKit/IOKitDebug.h> 41 #include <IOKit/pwr_mgt/RootDomain.h> 42 #include <IOKit/pwr_mgt/IOPMinformeeList.h> 43 #include <IOKit/IOStatisticsPrivate.h> 44 #include <IOKit/IOKitKeysPrivate.h> 45 46 #include <IOKit/assert.h> 47 48 #include "IOKitKernelInternal.h" 49 50 extern "C" { 51 52 extern void OSlibkernInit (void); 53 54 void iokit_post_constructor_init(void); 55 56 #include <kern/clock.h> 57 #include <sys/time.h> 58 59 void IOKitInitializeTime( void ) 60 { 61 mach_timespec_t t; 62 63 t.tv_sec = 30; 64 t.tv_nsec = 0; 65 IOService::waitForService( 66 IOService::resourceMatching("IORTC"), &t ); 67 #if defined(__i386__) || defined(__x86_64__) 68 IOService::waitForService( 69 IOService::resourceMatching("IONVRAM"), &t ); 70 #endif 71 72 clock_initialize_calendar(); 73 } 74 75 void IOKitResetTime( void ) 76 { 77 clock_sec_t secs; 78 clock_usec_t microsecs; 79 80 clock_initialize_calendar(); 81 82 clock_get_calendar_microtime(&secs, µsecs); 83 gIOLastWakeTime.tv_sec = secs; 84 gIOLastWakeTime.tv_usec = microsecs; 85 86 IOService::updateConsoleUsers(NULL, kIOMessageSystemHasPoweredOn); 87 } 88 89 void iokit_post_constructor_init(void) 90 { 91 IORegistryEntry * root; 92 OSObject * obj; 93 94 root = IORegistryEntry::initialize(); 95 assert( root ); 96 IOService::initialize(); 97 IOCatalogue::initialize(); 98 IOStatistics::initialize(); 99 OSKext::initialize(); 100 IOUserClient::initialize(); 101 IOMemoryDescriptor::initialize(); 102 IORootParent::initialize(); 103 104 // Initializes IOPMinformeeList class-wide shared lock 105 IOPMinformeeList::getSharedRecursiveLock(); 106 107 obj = OSString::withCString( version ); 108 assert( obj ); 109 if( obj ) { 110 root->setProperty( kIOKitBuildVersionKey, obj ); 111 obj->release(); 112 } 113 obj = IOKitDiagnostics::diagnostics(); 114 if( obj ) { 115 root->setProperty( kIOKitDiagnosticsKey, obj ); 116 obj->release(); 117 } 118 } 119 120 // From <osfmk/kern/debug.c> 121 extern int debug_mode; 122 123 /***** 124 * Pointer into bootstrap KLD segment for functions never used past startup. 125 */ 126 void (*record_startup_extensions_function)(void) = 0; 127 128 void StartIOKit( void * p1, void * p2, void * p3, void * p4 ) 129 { 130 IOPlatformExpertDevice * rootNub; 131 int debugFlags; 132 133 if( PE_parse_boot_argn( "io", &debugFlags, sizeof (debugFlags) )) 134 gIOKitDebug = debugFlags; 135 136 if( PE_parse_boot_argn( "iotrace", &debugFlags, sizeof (debugFlags) )) 137 gIOKitTrace = debugFlags; 138 139 // Compat for boot-args 140 gIOKitTrace |= (gIOKitDebug & kIOTraceCompatBootArgs); 141 142 // Check for the log synchronous bit set in io 143 if (gIOKitDebug & kIOLogSynchronous) 144 debug_mode = true; 145 146 // 147 // Have to start IOKit environment before we attempt to start 148 // the C++ runtime environment. At some stage we have to clean up 149 // the initialisation path so that OS C++ can initialise independantly 150 // of iokit basic service initialisation, or better we have IOLib stuff 151 // initialise as basic OS services. 152 // 153 IOLibInit(); 154 OSlibkernInit(); 155 156 rootNub = new IOPlatformExpertDevice; 157 158 if( rootNub && rootNub->initWithArgs( p1, p2, p3, p4)) { 159 rootNub->attach( 0 ); 160 161 /* If the bootstrap segment set up a function to record startup 162 * extensions, call it now. 163 */ 164 if (record_startup_extensions_function) { 165 record_startup_extensions_function(); 166 } 167 168 rootNub->registerService(); 169 170 #if !NO_KEXTD 171 /* Add a busy count to keep the registry busy until kextd has 172 * completely finished launching. This is decremented when kextd 173 * messages the kernel after the in-kernel linker has been 174 * removed and personalities have been sent. 175 */ 176 IOService::getServiceRoot()->adjustBusy(1); 177 #endif 178 } 179 } 180 181 void 182 IORegistrySetOSBuildVersion(char * build_version) 183 { 184 IORegistryEntry * root = IORegistryEntry::getRegistryRoot(); 185 186 if (root) { 187 if (build_version) { 188 root->setProperty(kOSBuildVersionKey, build_version); 189 } else { 190 root->removeProperty(kOSBuildVersionKey); 191 } 192 } 193 194 return; 195 } 196 197 }; /* extern "C" */ 198