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/section_keywords.h> 32 #include <libkern/version.h> 33 #include <IOKit/IORegistryEntry.h> 34 #include <IOKit/IODeviceTreeSupport.h> 35 #include <IOKit/IOCatalogue.h> 36 #include <IOKit/IOUserClient.h> 37 #include <IOKit/IOMemoryDescriptor.h> 38 #include <IOKit/IOPlatformExpert.h> 39 #include <IOKit/IOKernelReporters.h> 40 #include <IOKit/IOLib.h> 41 #include <IOKit/IOKitKeys.h> 42 #include <IOKit/IOKitDebug.h> 43 #include <IOKit/pwr_mgt/RootDomain.h> 44 #include <IOKit/pwr_mgt/IOPMinformeeList.h> 45 #include <IOKit/IOStatisticsPrivate.h> 46 #include <IOKit/IOKitKeysPrivate.h> 47 #include <IOKit/IOInterruptAccountingPrivate.h> 48 #include <IOKit/assert.h> 49 #include <sys/conf.h> 50 51 #include "IOKitKernelInternal.h" 52 53 const OSSymbol * gIOProgressBackbufferKey; 54 OSSet * gIORemoveOnReadProperties; 55 56 extern "C" { 57 void InitIOKit(void *dtTop); 58 void ConfigureIOKit(void); 59 void StartIOKitMatching(void); 60 void IORegistrySetOSBuildVersion(char * build_version); 61 void IORecordProgressBackbuffer(void * buffer, size_t size, uint32_t theme); 62 63 extern void OSlibkernInit(void); 64 65 void iokit_post_constructor_init(void); 66 67 SECURITY_READ_ONLY_LATE(static IOPlatformExpertDevice*) gRootNub; 68 69 #include <kern/clock.h> 70 #include <sys/time.h> 71 72 void 73 IOKitInitializeTime( void ) 74 { 75 mach_timespec_t t; 76 77 t.tv_sec = 30; 78 t.tv_nsec = 0; 79 80 IOService::waitForService( 81 IOService::resourceMatching("IORTC"), &t ); 82 #if defined(__i386__) || defined(__x86_64__) 83 IOService::waitForService( 84 IOService::resourceMatching("IONVRAM"), &t ); 85 #endif 86 87 clock_initialize_calendar(); 88 } 89 90 void 91 iokit_post_constructor_init(void) 92 { 93 IORegistryEntry * root; 94 OSObject * obj; 95 96 IOCPUInitialize(); 97 IOPlatformActionsInitialize(); 98 root = IORegistryEntry::initialize(); 99 assert( root ); 100 IOService::initialize(); 101 IOCatalogue::initialize(); 102 IOStatistics::initialize(); 103 OSKext::initialize(); 104 IOUserClient::initialize(); 105 IOMemoryDescriptor::initialize(); 106 IORootParent::initialize(); 107 IOReporter::initialize(); 108 109 // Initializes IOPMinformeeList class-wide shared lock 110 IOPMinformeeList::getSharedRecursiveLock(); 111 112 obj = OSString::withCString( version ); 113 assert( obj ); 114 if (obj) { 115 root->setProperty( kIOKitBuildVersionKey, obj ); 116 obj->release(); 117 } 118 obj = IOKitDiagnostics::diagnostics(); 119 if (obj) { 120 root->setProperty( kIOKitDiagnosticsKey, obj ); 121 obj->release(); 122 } 123 } 124 125 /***** 126 * Pointer into bootstrap KLD segment for functions never used past startup. 127 */ 128 void (*record_startup_extensions_function)(void) = NULL; 129 130 void 131 InitIOKit(void *dtTop) 132 { 133 // Compat for boot-args 134 gIOKitTrace |= (gIOKitDebug & kIOTraceCompatBootArgs); 135 136 // 137 // Have to start IOKit environment before we attempt to start 138 // the C++ runtime environment. At some stage we have to clean up 139 // the initialisation path so that OS C++ can initialise independantly 140 // of iokit basic service initialisation, or better we have IOLib stuff 141 // initialise as basic OS services. 142 // 143 IOLibInit(); 144 OSlibkernInit(); 145 IOMachPortInitialize(); 146 147 gIOProgressBackbufferKey = OSSymbol::withCStringNoCopy(kIOProgressBackbufferKey); 148 gIORemoveOnReadProperties = OSSet::withObjects((const OSObject **) &gIOProgressBackbufferKey, 1); 149 150 interruptAccountingInit(); 151 152 gRootNub = new IOPlatformExpertDevice; 153 if (__improbable(gRootNub == NULL)) { 154 panic("Failed to allocate IOKit root nub"); 155 } 156 bool ok = gRootNub->init(dtTop); 157 if (__improbable(!ok)) { 158 panic("Failed to initialize IOKit root nub"); 159 } 160 gRootNub->attach(NULL); 161 162 /* If the bootstrap segment set up a function to record startup 163 * extensions, call it now. 164 */ 165 if (record_startup_extensions_function) { 166 record_startup_extensions_function(); 167 } 168 } 169 170 void 171 ConfigureIOKit(void) 172 { 173 assert(gRootNub != NULL); 174 gRootNub->configureDefaults(); 175 } 176 177 void 178 StartIOKitMatching(void) 179 { 180 SOCD_TRACE_XNU(START_IOKIT); 181 assert(gRootNub != NULL); 182 bool ok = gRootNub->startIOServiceMatching(); 183 if (__improbable(!ok)) { 184 panic("Failed to start IOService matching"); 185 } 186 187 #if !NO_KEXTD 188 if (OSKext::iokitDaemonAvailable()) { 189 /* Add a busy count to keep the registry busy until the IOKit daemon has 190 * completely finished launching. This is decremented when the IOKit daemon 191 * messages the kernel after the in-kernel linker has been 192 * removed and personalities have been sent. 193 */ 194 IOService::getServiceRoot()->adjustBusy(1); 195 } 196 #endif 197 } 198 199 void 200 IORegistrySetOSBuildVersion(char * build_version) 201 { 202 IORegistryEntry * root = IORegistryEntry::getRegistryRoot(); 203 204 if (root) { 205 if (build_version) { 206 root->setProperty(kOSBuildVersionKey, build_version); 207 } else { 208 root->removeProperty(kOSBuildVersionKey); 209 } 210 } 211 212 return; 213 } 214 215 void 216 IORecordProgressBackbuffer(void * buffer, size_t size, uint32_t theme) 217 { 218 IORegistryEntry * chosen; 219 220 if (((unsigned int) size) != size) { 221 return; 222 } 223 if ((chosen = IORegistryEntry::fromPath(kIODeviceTreePlane ":/chosen"))) { 224 chosen->setProperty(kIOProgressBackbufferKey, buffer, (unsigned int) size); 225 chosen->setProperty(kIOProgressColorThemeKey, theme, 32); 226 227 chosen->release(); 228 } 229 } 230 }; /* extern "C" */ 231