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
IOKitInitializeTime(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
iokit_post_constructor_init(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
InitIOKit(void * dtTop)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
ConfigureIOKit(void)171 ConfigureIOKit(void)
172 {
173 assert(gRootNub != NULL);
174 gRootNub->configureDefaults();
175 }
176
177 void
StartIOKitMatching(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
IORegistrySetOSBuildVersion(char * build_version)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
IORecordProgressBackbuffer(void * buffer,size_t size,uint32_t theme)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