iokit/Kernel/IOStartIOKit.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1998,1999 Apple Computer, Inc.  All rights reserved.
  24  *
  25  * HISTORY
  26  *
  27  */
  28
  29 #include <libkern/c++/OSUnserialize.h>
  30 #include <IOKit/IORegistryEntry.h>
  31 #include <IOKit/IODeviceTreeSupport.h>
  32 #include <IOKit/IOCatalogue.h>
  33 #include <IOKit/IOUserClient.h>
  34 #include <IOKit/IOMemoryDescriptor.h>
  35 #include <IOKit/IOPlatformExpert.h>
  36 #include <IOKit/IOLib.h>
  37 #include <IOKit/IOKitKeys.h>
  38 #include <IOKit/IOKitDebug.h>
  39
  40 #include <IOKit/assert.h>
  41
  42 extern "C" {
  43
  44 extern void OSlibkernInit (void);
  45 extern void IOLibInit(void);
  46
  47 #include <kern/clock.h>
  48
  49 /*XXX power management hacks XXX*/
  50 #include <IOKit/IOReturn.h>
  51 #include <IOKit/IOMessage.h>
  52
  53 extern void *registerSleepWakeInterest(
  54                                                 void            *callback,
  55                                                 void            *target,
  56                                                 void            *refCon);
  57 /*XXX power management hacks XXX*/
  58
  59 static void
  60 calend_wakeup_resynch(
  61         thread_call_param_t             p0,
  62         thread_call_param_t             p1)
  63 {
  64         void            IOKitResetTime(void);
  65
  66         IOKitResetTime();
  67 }
  68
  69 static thread_call_t    calend_sleep_wake_call;
  70
  71 static IOReturn
  72 calend_sleep_wake_notif(
  73         void                    *target,
  74         void                    *refCon,
  75         unsigned int    messageType,
  76         void                    *provider,
  77         void                    *messageArg,
  78         vm_size_t               argSize)
  79 {
  80         if (messageType != kIOMessageSystemHasPoweredOn)
  81                 return (kIOReturnUnsupported);
  82
  83         if (calend_sleep_wake_call != NULL)
  84                 thread_call_enter(calend_sleep_wake_call);
  85
  86         return (kIOReturnSuccess);
  87 }
  88
  89 void IOKitResetTime( void )
  90 {
  91     mach_timespec_t     t;
  92
  93     t.tv_sec = 30;
  94     t.tv_nsec = 0;
  95     IOService::waitForService(
  96         IOService::resourceMatching("IORTC"), &t );
  97 #ifndef i386
  98     IOService::waitForService(
  99         IOService::resourceMatching("IONVRAM"), &t );
 100 #endif
 101
 102         if (calend_sleep_wake_call == NULL) {
 103                 calend_sleep_wake_call = thread_call_allocate(
 104                                                                                         calend_wakeup_resynch, NULL);
 105
 106                 registerSleepWakeInterest(calend_sleep_wake_notif, NULL, NULL);
 107         }
 108
 109     clock_initialize_calendar();
 110 }
 111
 112
 113 void StartIOKit( void * p1, void * p2, void * p3, void * p4 )
 114 {
 115     IOPlatformExpertDevice *    rootNub;
 116     int                         debugFlags;
 117     IORegistryEntry *           root;
 118     OSObject *                  obj;
 119     extern const char *         gIOKernelKmods;
 120     OSString *                  errorString = NULL; // must release
 121     OSDictionary *              fakeKmods;  // must release
 122     OSCollectionIterator *      kmodIter;   // must release
 123     OSString *                  kmodName;   // don't release
 124
 125     IOLog( iokit_version );
 126
 127     if( PE_parse_boot_arg( "io", &debugFlags ))
 128         gIOKitDebug = debugFlags;
 129     //
 130     // Have to start IOKit environment before we attempt to start
 131     // the C++ runtime environment.  At some stage we have to clean up
 132     // the initialisation path so that OS C++ can initialise independantly
 133     // of iokit basic service initialisation, or better we have IOLib stuff
 134     // initialise as basic OS services.
 135     //
 136     IOLibInit();
 137     OSlibkernInit();
 138
 139     IOLog("_cppInit done\n");
 140
 141
 142    /*****
 143     * Declare the fake kmod_info structs for built-in components
 144     * that must be tracked as independent units for dependencies.
 145     */
 146     fakeKmods = OSDynamicCast(OSDictionary,
 147         OSUnserialize(gIOKernelKmods, &errorString));
 148
 149     if (!fakeKmods) {
 150         if (errorString) {
 151             panic("Kernel kmod list syntax error: %s\n",
 152                     errorString->getCStringNoCopy());
 153             errorString->release();
 154         } else {
 155             panic("Error loading kernel kmod list.\n");
 156         }
 157     }
 158
 159     kmodIter = OSCollectionIterator::withCollection(fakeKmods);
 160     if (!kmodIter) {
 161         panic("Can't declare in-kernel kmods.\n");
 162     }
 163     while ((kmodName = OSDynamicCast(OSString, kmodIter->getNextObject()))) {
 164
 165         OSString * kmodVersion = OSDynamicCast(OSString,
 166             fakeKmods->getObject(kmodName));
 167         if (!kmodVersion) {
 168             panic("Can't declare in-kernel kmod; \"%s\" has "
 169                 "an invalid version.\n",
 170                 kmodName->getCStringNoCopy());
 171         }
 172         if (KERN_SUCCESS != kmod_create_fake(kmodName->getCStringNoCopy(),
 173                 kmodVersion->getCStringNoCopy())) {
 174             panic("Failure declaring in-kernel kmod \"%s\".\n",
 175                 kmodName->getCStringNoCopy());
 176         }
 177     }
 178
 179     kmodIter->release();
 180     fakeKmods->release();
 181
 182
 183
 184     root = IORegistryEntry::initialize();
 185     assert( root );
 186     IOService::initialize();
 187     IOCatalogue::initialize();
 188     IOUserClient::initialize();
 189     IOMemoryDescriptor::initialize();
 190
 191     obj = OSString::withCString( iokit_version );
 192     assert( obj );
 193     if( obj ) {
 194         root->setProperty( kIOKitBuildVersionKey, obj );
 195         obj->release();
 196     }
 197     obj = IOKitDiagnostics::diagnostics();
 198     if( obj ) {
 199         root->setProperty( kIOKitDiagnosticsKey, obj );
 200         obj->release();
 201     }
 202
 203     rootNub = new IOPlatformExpertDevice;
 204
 205     if( rootNub && rootNub->initWithArgs( p1, p2, p3, p4)) {
 206         rootNub->attach( 0 );
 207
 208        /* Enter into the catalogue the drivers
 209         * provided by BootX.
 210         */
 211         gIOCatalogue->recordStartupExtensions();
 212
 213         rootNub->registerService();
 214     }
 215 }
 216
 217 }; /* extern "C" */