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 |
73 | IOKitInitializeTime( 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 | |
93 | void |
94 | iokit_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 | */ |
131 | void (*record_startup_extensions_function)(void) = NULL; |
132 | |
133 | void |
134 | InitIOKit(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 | |
173 | void |
174 | ConfigureIOKit(void) |
175 | { |
176 | assert(gRootNub != NULL); |
177 | gRootNub->configureDefaults(); |
178 | } |
179 | |
180 | void |
181 | StartIOKitMatching(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 | |
202 | void |
203 | IORegistrySetOSBuildVersion(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 | |
218 | void |
219 | IORecordProgressBackbuffer(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 | |