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 #include <IOKit/network/IONetworkController.h>
  40 #include <IOKit/graphics/IODisplay.h>
  41
  42 #include <IOKit/assert.h>
  43
  44 extern "C" {
  45
  46 extern void OSlibkernInit (void);
  47 extern void IOLibInit(void);
  48
  49 #include <kern/clock.h>
  50
  51
  52 void IOKitResetTime( void )
  53 {
  54     mach_timespec_t     t;
  55
  56     t.tv_sec = 30;
  57     t.tv_nsec = 0;
  58     IOService::waitForService(
  59         IOService::resourceMatching("IORTC"), &t );
  60 #ifndef i386
  61     IOService::waitForService(
  62         IOService::resourceMatching("IONVRAM"), &t );
  63 #endif
  64
  65     clock_initialize_calendar();
  66 }
  67
  68
  69 void StartIOKit( void * p1, void * p2, void * p3, void * p4 )
  70 {
  71     IOPlatformExpertDevice *    rootNub;
  72     int                         debugFlags;
  73     IORegistryEntry *           root;
  74     OSObject *                  obj;
  75     extern const char *         gIOKernelKmods;
  76     OSString *                  errorString = NULL; // must release
  77     OSDictionary *              fakeKmods;  // must release
  78     OSCollectionIterator *      kmodIter;   // must release
  79     OSString *                  kmodName;   // don't release
  80
  81     IOLog( iokit_version );
  82
  83     if( PE_parse_boot_arg( "io", &debugFlags ))
  84         gIOKitDebug = debugFlags;
  85     //
  86     // Have to start IOKit environment before we attempt to start
  87     // the C++ runtime environment.  At some stage we have to clean up
  88     // the initialisation path so that OS C++ can initialise independantly
  89     // of iokit basic service initialisation, or better we have IOLib stuff
  90     // initialise as basic OS services.
  91     //
  92     IOLibInit();
  93     OSlibkernInit();
  94
  95     IOLog("_cppInit done\n");
  96
  97
  98    /*****
  99     * Declare the fake kmod_info structs for built-in components
 100     * that must be tracked as independent units for dependencies.
 101     */
 102     fakeKmods = OSDynamicCast(OSDictionary,
 103         OSUnserialize(gIOKernelKmods, &errorString));
 104
 105     if (!fakeKmods) {
 106         if (errorString) {
 107             panic("Kernel kmod list syntax error: %s\n",
 108                     errorString->getCStringNoCopy());
 109             errorString->release();
 110         } else {
 111             panic("Error loading kernel kmod list.\n");
 112         }
 113     }
 114
 115     kmodIter = OSCollectionIterator::withCollection(fakeKmods);
 116     if (!kmodIter) {
 117         panic("Can't declare in-kernel kmods.\n");
 118     }
 119     while ((kmodName = OSDynamicCast(OSString, kmodIter->getNextObject()))) {
 120
 121         OSString * kmodVersion = OSDynamicCast(OSString,
 122             fakeKmods->getObject(kmodName));
 123         if (!kmodVersion) {
 124             panic("Can't declare in-kernel kmod; \"%s\" has "
 125                 "an invalid version.\n",
 126                 kmodName->getCStringNoCopy());
 127         }
 128         if (KERN_SUCCESS != kmod_create_fake(kmodName->getCStringNoCopy(),
 129                 kmodVersion->getCStringNoCopy())) {
 130             panic("Failure declaring in-kernel kmod \"%s\".\n",
 131                 kmodName->getCStringNoCopy());
 132         }
 133     }
 134
 135     kmodIter->release();
 136     fakeKmods->release();
 137
 138
 139
 140     root = IORegistryEntry::initialize();
 141     assert( root );
 142     IOService::initialize();
 143     IOCatalogue::initialize();
 144     IOUserClient::initialize();
 145     IOMemoryDescriptor::initialize();
 146     IONetworkController::initialize();
 147     IODisplay::initialize();
 148
 149     obj = OSString::withCString( iokit_version );
 150     assert( obj );
 151     if( obj ) {
 152         root->setProperty( kIOKitBuildVersionKey, obj );
 153         obj->release();
 154     }
 155     obj = IOKitDiagnostics::diagnostics();
 156     if( obj ) {
 157         root->setProperty( kIOKitDiagnosticsKey, obj );
 158         obj->release();
 159     }
 160
 161 #ifdef i386
 162     // pretend there's no device-tree for intel
 163     p1 = 0;
 164 #endif
 165
 166     rootNub = new IOPlatformExpertDevice;
 167
 168     if( rootNub && rootNub->initWithArgs( p1, p2, p3, p4)) {
 169         rootNub->attach( 0 );
 170
 171        /* Enter into the catalogue the drivers
 172         * provided by BootX.
 173         */
 174         gIOCatalogue->recordStartupExtensions();
 175
 176         rootNub->registerService();
 177     }
 178 }
 179
 180 }; /* extern "C" */