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
53const OSSymbol * gIOProgressBackbufferKey;
54OSSet * gIORemoveOnReadProperties;
55
56extern "C" {
57void InitIOKit(void *dtTop);
58void ConfigureIOKit(void);
59void StartIOKitMatching(void);
60void IORegistrySetOSBuildVersion(char * build_version);
61void IORecordProgressBackbuffer(void * buffer, size_t size, uint32_t theme);
62
63extern void OSlibkernInit(void);
64
65void iokit_post_constructor_init(void);
66
67SECURITY_READ_ONLY_LATE(static IOPlatformExpertDevice*) gRootNub;
68
69#include <kern/clock.h>
70#include <sys/time.h>
71
72void
73IOKitInitializeTime( void )
74{
75 mach_timespec_t t;
76
77 t.tv_sec = 30;
78 t.tv_nsec = 0;
79
80// RTC is not present on this target
81#ifndef BCM2837
82 IOService::waitForService(
83 matching: IOService::resourceMatching(name: "IORTC"), timeout: &t );
84#endif
85#if defined(__i386__) || defined(__x86_64__)
86 IOService::waitForService(
87 IOService::resourceMatching("IONVRAM"), &t );
88#endif
89
90 clock_initialize_calendar();
91}
92
93void
94iokit_post_constructor_init(void)
95{
96 IORegistryEntry * root;
97 OSObject * obj;
98
99 IOCPUInitialize();
100 IOPlatformActionsInitialize();
101 root = IORegistryEntry::initialize();
102 assert( root );
103 IOService::initialize();
104 IOCatalogue::initialize();
105 IOStatistics::initialize();
106 OSKext::initialize();
107 IOUserClient::initialize();
108 IOMemoryDescriptor::initialize();
109 IORootParent::initialize();
110 IOReporter::initialize();
111
112 // Initializes IOPMinformeeList class-wide shared lock
113 IOPMinformeeList::getSharedRecursiveLock();
114
115 obj = OSString::withCString( cString: version );
116 assert( obj );
117 if (obj) {
118 root->setProperty( kIOKitBuildVersionKey, anObject: obj );
119 obj->release();
120 }
121 obj = IOKitDiagnostics::diagnostics();
122 if (obj) {
123 root->setProperty( kIOKitDiagnosticsKey, anObject: obj );
124 obj->release();
125 }
126}
127
128/*****
129 * Pointer into bootstrap KLD segment for functions never used past startup.
130 */
131void (*record_startup_extensions_function)(void) = NULL;
132
133void
134InitIOKit(void *dtTop)
135{
136 // Compat for boot-args
137 gIOKitTrace |= (gIOKitDebug & kIOTraceCompatBootArgs);
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 IOMachPortInitialize();
149
150 gIOProgressBackbufferKey = OSSymbol::withCStringNoCopy(kIOProgressBackbufferKey);
151 gIORemoveOnReadProperties = OSSet::withObjects(objects: (const OSObject **) &gIOProgressBackbufferKey, count: 1);
152
153 interruptAccountingInit();
154
155 gRootNub = new IOPlatformExpertDevice;
156 if (__improbable(gRootNub == NULL)) {
157 panic("Failed to allocate IOKit root nub");
158 }
159 bool ok = gRootNub->init(dtRoot: dtTop);
160 if (__improbable(!ok)) {
161 panic("Failed to initialize IOKit root nub");
162 }
163 gRootNub->attach(NULL);
164
165 /* If the bootstrap segment set up a function to record startup
166 * extensions, call it now.
167 */
168 if (record_startup_extensions_function) {
169 record_startup_extensions_function();
170 }
171}
172
173void
174ConfigureIOKit(void)
175{
176 assert(gRootNub != NULL);
177 gRootNub->configureDefaults();
178}
179
180void
181StartIOKitMatching(void)
182{
183 SOCD_TRACE_XNU(START_IOKIT);
184 assert(gRootNub != NULL);
185 bool ok = gRootNub->startIOServiceMatching();
186 if (__improbable(!ok)) {
187 panic("Failed to start IOService matching");
188 }
189
190#if !NO_KEXTD
191 if (OSKext::iokitDaemonAvailable()) {
192 /* Add a busy count to keep the registry busy until the IOKit daemon has
193 * completely finished launching. This is decremented when the IOKit daemon
194 * messages the kernel after the in-kernel linker has been
195 * removed and personalities have been sent.
196 */
197 IOService::getServiceRoot()->adjustBusy(delta: 1);
198 }
199#endif
200}
201
202void
203IORegistrySetOSBuildVersion(char * build_version)
204{
205 IORegistryEntry * root = IORegistryEntry::getRegistryRoot();
206
207 if (root) {
208 if (build_version) {
209 root->setProperty(kOSBuildVersionKey, aString: build_version);
210 } else {
211 root->removeProperty(kOSBuildVersionKey);
212 }
213 }
214
215 return;
216}
217
218void
219IORecordProgressBackbuffer(void * buffer, size_t size, uint32_t theme)
220{
221 IORegistryEntry * chosen;
222
223 if (((unsigned int) size) != size) {
224 return;
225 }
226 if ((chosen = IORegistryEntry::fromPath(kIODeviceTreePlane ":/chosen"))) {
227 chosen->setProperty(kIOProgressBackbufferKey, bytes: buffer, length: (unsigned int) size);
228 chosen->setProperty(kIOProgressColorThemeKey, aValue: theme, aNumberOfBits: 32);
229
230 chosen->release();
231 }
232}
233}; /* extern "C" */
234