iokit/Kernel/IOStartIOKit.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1998,1999 Apple Computer, Inc.  All rights reserved.
  27  *
  28  * HISTORY
  29  *
  30  */
  31
  32 #include <libkern/c++/OSUnserialize.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/IOLib.h>
  40 #include <IOKit/IOKitKeys.h>
  41 #include <IOKit/IOKitDebug.h>
  42
  43 #include <IOKit/assert.h>
  44
  45 extern "C" {
  46
  47 extern void OSlibkernInit (void);
  48 extern void IOLibInit(void);
  49
  50 #include <kern/clock.h>
  51
  52 /*XXX power management hacks XXX*/
  53 #include <IOKit/IOReturn.h>
  54 #include <IOKit/IOMessage.h>
  55
  56 extern void *registerSleepWakeInterest(
  57                                                 void            *callback,
  58                                                 void            *target,
  59                                                 void            *refCon);
  60 /*XXX power management hacks XXX*/
  61
  62 static void
  63 calend_wakeup_resynch(
  64         thread_call_param_t             p0,
  65         thread_call_param_t             p1)
  66 {
  67         void            IOKitResetTime(void);
  68
  69         IOKitResetTime();
  70 }
  71
  72 static thread_call_t    calend_sleep_wake_call;
  73
  74 static IOReturn
  75 calend_sleep_wake_notif(
  76         void                    *target,
  77         void                    *refCon,
  78         unsigned int    messageType,
  79         void                    *provider,
  80         void                    *messageArg,
  81         vm_size_t               argSize)
  82 {
  83         if (messageType != kIOMessageSystemHasPoweredOn)
  84                 return (kIOReturnUnsupported);
  85
  86         if (calend_sleep_wake_call != NULL)
  87                 thread_call_enter(calend_sleep_wake_call);
  88
  89         return (kIOReturnSuccess);
  90 }
  91
  92 void IOKitResetTime( void )
  93 {
  94     mach_timespec_t     t;
  95
  96     t.tv_sec = 30;
  97     t.tv_nsec = 0;
  98     IOService::waitForService(
  99         IOService::resourceMatching("IORTC"), &t );
 100 #ifndef i386
 101     IOService::waitForService(
 102         IOService::resourceMatching("IONVRAM"), &t );
 103 #endif
 104
 105         if (calend_sleep_wake_call == NULL) {
 106                 calend_sleep_wake_call = thread_call_allocate(
 107                                                                                         calend_wakeup_resynch, NULL);
 108
 109                 registerSleepWakeInterest((void *)calend_sleep_wake_notif, NULL, NULL);
 110         }
 111
 112     clock_initialize_calendar();
 113 }
 114
 115 // From <osfmk/kern/debug.c>
 116 extern int debug_mode;
 117
 118 void StartIOKit( void * p1, void * p2, void * p3, void * p4 )
 119 {
 120     IOPlatformExpertDevice *    rootNub;
 121     int                         debugFlags;
 122     IORegistryEntry *           root;
 123     OSObject *                  obj;
 124     extern const char *         gIOKernelKmods;
 125     OSString *                  errorString = NULL; // must release
 126     OSDictionary *              fakeKmods;  // must release
 127     OSCollectionIterator *      kmodIter;   // must release
 128     OSString *                  kmodName;   // don't release
 129
 130     IOLog( iokit_version );
 131
 132     if( PE_parse_boot_arg( "io", &debugFlags ))
 133         gIOKitDebug = debugFlags;
 134
 135     // Check for the log synchronous bit set in io
 136     if (gIOKitDebug & kIOLogSynchronous)
 137         debug_mode = true;
 138
 139     //
 140     // Have to start IOKit environment before we attempt to start
 141     // the C++ runtime environment.  At some stage we have to clean up
 142     // the initialisation path so that OS C++ can initialise independantly
 143     // of iokit basic service initialisation, or better we have IOLib stuff
 144     // initialise as basic OS services.
 145     //
 146     IOLibInit();
 147     OSlibkernInit();
 148
 149     IOLog("_cppInit done\n");
 150
 151    /*****
 152     * Declare the fake kmod_info structs for built-in components
 153     * that must be tracked as independent units for dependencies.
 154     */
 155     fakeKmods = OSDynamicCast(OSDictionary,
 156         OSUnserialize(gIOKernelKmods, &errorString));
 157
 158     if (!fakeKmods) {
 159         if (errorString) {
 160             panic("Kernel kmod list syntax error: %s\n",
 161                     errorString->getCStringNoCopy());
 162             errorString->release();
 163         } else {
 164             panic("Error loading kernel kmod list.\n");
 165         }
 166     }
 167
 168     kmodIter = OSCollectionIterator::withCollection(fakeKmods);
 169     if (!kmodIter) {
 170         panic("Can't declare in-kernel kmods.\n");
 171     }
 172     while ((kmodName = OSDynamicCast(OSString, kmodIter->getNextObject()))) {
 173
 174         OSString * kmodVersion = OSDynamicCast(OSString,
 175             fakeKmods->getObject(kmodName));
 176         if (!kmodVersion) {
 177             panic("Can't declare in-kernel kmod; \"%s\" has "
 178                 "an invalid version.\n",
 179                 kmodName->getCStringNoCopy());
 180         }
 181         if (KERN_SUCCESS != kmod_create_fake(kmodName->getCStringNoCopy(),
 182                 kmodVersion->getCStringNoCopy())) {
 183             panic("Failure declaring in-kernel kmod \"%s\".\n",
 184                 kmodName->getCStringNoCopy());
 185         }
 186     }
 187
 188     kmodIter->release();
 189     fakeKmods->release();
 190
 191
 192
 193     root = IORegistryEntry::initialize();
 194     assert( root );
 195     IOService::initialize();
 196     IOCatalogue::initialize();
 197     IOUserClient::initialize();
 198     IOMemoryDescriptor::initialize();
 199
 200     obj = OSString::withCString( iokit_version );
 201     assert( obj );
 202     if( obj ) {
 203         root->setProperty( kIOKitBuildVersionKey, obj );
 204         obj->release();
 205     }
 206     obj = IOKitDiagnostics::diagnostics();
 207     if( obj ) {
 208         root->setProperty( kIOKitDiagnosticsKey, obj );
 209         obj->release();
 210     }
 211
 212     rootNub = new IOPlatformExpertDevice;
 213
 214     if( rootNub && rootNub->initWithArgs( p1, p2, p3, p4)) {
 215         rootNub->attach( 0 );
 216
 217        /* Enter into the catalogue the drivers
 218         * provided by BootX.
 219         */
 220         gIOCatalogue->recordStartupExtensions();
 221
 222         rootNub->registerService();
 223     }
 224 }
 225
 226 }; /* extern "C" */