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#include <IOKit/IOInterruptAccountingPrivate.h>
46
47#include <IOKit/assert.h>
48
49#include "IOKitKernelInternal.h"
50
51const OSSymbol * gIOProgressBackbufferKey;
52OSSet *          gIORemoveOnReadProperties;
53
54extern "C" {
55
56extern void OSlibkernInit (void);
57
58void iokit_post_constructor_init(void);
59
60#include <kern/clock.h>
61#include <sys/time.h>
62
63void IOKitInitializeTime( void )
64{
65	mach_timespec_t		t;
66
67	t.tv_sec = 30;
68	t.tv_nsec = 0;
69	IOService::waitForService(
70		IOService::resourceMatching("IORTC"), &t );
71#if defined(__i386__) || defined(__x86_64__)
72	IOService::waitForService(
73		IOService::resourceMatching("IONVRAM"), &t );
74#endif
75
76    clock_initialize_calendar();
77}
78
79void IOKitResetTime( void )
80{
81    clock_sec_t		secs;
82	clock_usec_t	microsecs;
83
84    clock_initialize_calendar();
85
86    clock_get_calendar_microtime(&secs, &microsecs);
87    gIOLastWakeTime.tv_sec  = secs;
88    gIOLastWakeTime.tv_usec = microsecs;
89
90    IOService::updateConsoleUsers(NULL, kIOMessageSystemHasPoweredOn);
91}
92
93void iokit_post_constructor_init(void)
94{
95    IORegistryEntry *		root;
96    OSObject *			obj;
97
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
108    // Initializes IOPMinformeeList class-wide shared lock
109    IOPMinformeeList::getSharedRecursiveLock();
110
111    obj = OSString::withCString( version );
112    assert( obj );
113    if( obj ) {
114        root->setProperty( kIOKitBuildVersionKey, obj );
115	obj->release();
116    }
117    obj = IOKitDiagnostics::diagnostics();
118    if( obj ) {
119        root->setProperty( kIOKitDiagnosticsKey, obj );
120	obj->release();
121    }
122}
123
124// From <osfmk/kern/debug.c>
125extern int debug_mode;
126
127/*****
128 * Pointer into bootstrap KLD segment for functions never used past startup.
129 */
130void (*record_startup_extensions_function)(void) = 0;
131
132void StartIOKit( void * p1, void * p2, void * p3, void * p4 )
133{
134    IOPlatformExpertDevice *	rootNub;
135    int				debugFlags;
136
137    if( PE_parse_boot_argn( "io", &debugFlags, sizeof (debugFlags) ))
138		gIOKitDebug = debugFlags;
139
140    if( PE_parse_boot_argn( "iotrace", &debugFlags, sizeof (debugFlags) ))
141		gIOKitTrace = debugFlags;
142
143	// Compat for boot-args
144	gIOKitTrace |= (gIOKitDebug & kIOTraceCompatBootArgs);
145
146    // Check for the log synchronous bit set in io
147    if (gIOKitDebug & kIOLogSynchronous)
148        debug_mode = true;
149
150    //
151    // Have to start IOKit environment before we attempt to start
152    // the C++ runtime environment.  At some stage we have to clean up
153    // the initialisation path so that OS C++ can initialise independantly
154    // of iokit basic service initialisation, or better we have IOLib stuff
155    // initialise as basic OS services.
156    //
157    IOLibInit();
158    OSlibkernInit();
159
160    gIOProgressBackbufferKey  = OSSymbol::withCStringNoCopy(kIOProgressBackbufferKey);
161    gIORemoveOnReadProperties = OSSet::withObjects((const OSObject **) &gIOProgressBackbufferKey, 1);
162
163    interruptAccountingInit();
164
165    rootNub = new IOPlatformExpertDevice;
166
167    if( rootNub && rootNub->initWithArgs( p1, p2, p3, p4)) {
168        rootNub->attach( 0 );
169
170       /* If the bootstrap segment set up a function to record startup
171        * extensions, call it now.
172        */
173        if (record_startup_extensions_function) {
174            record_startup_extensions_function();
175        }
176
177        rootNub->registerService();
178
179#if !NO_KEXTD
180       /* Add a busy count to keep the registry busy until kextd has
181        * completely finished launching. This is decremented when kextd
182        * messages the kernel after the in-kernel linker has been
183        * removed and personalities have been sent.
184        */
185        IOService::getServiceRoot()->adjustBusy(1);
186#endif
187    }
188}
189
190void
191IORegistrySetOSBuildVersion(char * build_version)
192{
193    IORegistryEntry * root = IORegistryEntry::getRegistryRoot();
194
195    if (root) {
196        if (build_version) {
197            root->setProperty(kOSBuildVersionKey, build_version);
198        } else {
199            root->removeProperty(kOSBuildVersionKey);
200        }
201    }
202
203    return;
204}
205
206void
207IORecordProgressBackbuffer(void * buffer, size_t size, uint32_t theme)
208{
209    IORegistryEntry * chosen;
210    if ((chosen = IORegistryEntry::fromPath(kIODeviceTreePlane ":/chosen")))
211    {
212        chosen->setProperty(kIOProgressBackbufferKey, buffer, size);
213	chosen->setProperty(kIOProgressColorThemeKey, theme, 32);
214
215        chosen->release();
216    }
217}
218
219}; /* extern "C" */
220