X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/3e170ce000f1506b7b5d2c5c7faec85ceabb573d..f427ee49d309d8fc33ebf3042c3a775f2f530ded:/iokit/Kernel/IOStartIOKit.cpp diff --git a/iokit/Kernel/IOStartIOKit.cpp b/iokit/Kernel/IOStartIOKit.cpp index 8177603cc..c022807f2 100644 --- a/iokit/Kernel/IOStartIOKit.cpp +++ b/iokit/Kernel/IOStartIOKit.cpp @@ -2,7 +2,7 @@ * Copyright (c) 1998-2010 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ - * + * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in @@ -11,10 +11,10 @@ * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. - * + * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. - * + * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, @@ -22,12 +22,13 @@ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. - * + * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include #include +#include #include #include #include @@ -35,6 +36,7 @@ #include #include #include +#include #include #include #include @@ -43,8 +45,8 @@ #include #include #include - #include +#include #include "IOKitKernelInternal.h" @@ -52,160 +54,205 @@ const OSSymbol * gIOProgressBackbufferKey; OSSet * gIORemoveOnReadProperties; extern "C" { +void InitIOKit(void *dtTop); +void ConfigureIOKit(void); +void StartIOKitMatching(void); +void IORegistrySetOSBuildVersion(char * build_version); +void IORecordProgressBackbuffer(void * buffer, size_t size, uint32_t theme); -extern void OSlibkernInit (void); +extern void OSlibkernInit(void); void iokit_post_constructor_init(void); +SECURITY_READ_ONLY_LATE(static IOPlatformExpertDevice*) gRootNub; + #include #include -void IOKitInitializeTime( void ) +void +IOKitInitializeTime( void ) { - mach_timespec_t t; + mach_timespec_t t; t.tv_sec = 30; t.tv_nsec = 0; + +// RTC is not present on this target +#ifndef BCM2837 IOService::waitForService( IOService::resourceMatching("IORTC"), &t ); +#endif #if defined(__i386__) || defined(__x86_64__) IOService::waitForService( IOService::resourceMatching("IONVRAM"), &t ); #endif - clock_initialize_calendar(); + clock_initialize_calendar(); } -void iokit_post_constructor_init(void) +void +iokit_post_constructor_init(void) { - IORegistryEntry * root; - OSObject * obj; - - IOCPUInitialize(); - root = IORegistryEntry::initialize(); - assert( root ); - IOService::initialize(); - IOCatalogue::initialize(); - IOStatistics::initialize(); - OSKext::initialize(); - IOUserClient::initialize(); - IOMemoryDescriptor::initialize(); - IORootParent::initialize(); - - // Initializes IOPMinformeeList class-wide shared lock - IOPMinformeeList::getSharedRecursiveLock(); - - obj = OSString::withCString( version ); - assert( obj ); - if( obj ) { - root->setProperty( kIOKitBuildVersionKey, obj ); - obj->release(); - } - obj = IOKitDiagnostics::diagnostics(); - if( obj ) { - root->setProperty( kIOKitDiagnosticsKey, obj ); - obj->release(); - } + IORegistryEntry * root; + OSObject * obj; + + IOCPUInitialize(); + IOPlatformActionsInitialize(); + root = IORegistryEntry::initialize(); + assert( root ); + IOService::initialize(); + IOCatalogue::initialize(); + IOStatistics::initialize(); + OSKext::initialize(); + IOUserClient::initialize(); + IOMemoryDescriptor::initialize(); + IORootParent::initialize(); + IOReporter::initialize(); + + // Initializes IOPMinformeeList class-wide shared lock + IOPMinformeeList::getSharedRecursiveLock(); + + obj = OSString::withCString( version ); + assert( obj ); + if (obj) { + root->setProperty( kIOKitBuildVersionKey, obj ); + obj->release(); + } + obj = IOKitDiagnostics::diagnostics(); + if (obj) { + root->setProperty( kIOKitDiagnosticsKey, obj ); + obj->release(); + } } -// From -extern int debug_mode; - /***** * Pointer into bootstrap KLD segment for functions never used past startup. */ -void (*record_startup_extensions_function)(void) = 0; +void (*record_startup_extensions_function)(void) = NULL; -void StartIOKit( void * p1, void * p2, void * p3, void * p4 ) +void +InitIOKit(void *dtTop) { - IOPlatformExpertDevice * rootNub; - int debugFlags; - - if( PE_parse_boot_argn( "io", &debugFlags, sizeof (debugFlags) )) - gIOKitDebug = debugFlags; -#if DEVELOPMENT || DEBUG - else gIOKitDebug |= kIOWaitQuietPanics; -#endif /* DEVELOPMENT || DEBUG */ - - if( PE_parse_boot_argn( "iotrace", &debugFlags, sizeof (debugFlags) )) - gIOKitTrace = debugFlags; - - // Compat for boot-args - gIOKitTrace |= (gIOKitDebug & kIOTraceCompatBootArgs); - - // Check for the log synchronous bit set in io - if (gIOKitDebug & kIOLogSynchronous) - debug_mode = true; - - if( PE_parse_boot_argn( "pmtimeout", &debugFlags, sizeof (debugFlags) )) - gCanSleepTimeout = debugFlags; - // - // Have to start IOKit environment before we attempt to start - // the C++ runtime environment. At some stage we have to clean up - // the initialisation path so that OS C++ can initialise independantly - // of iokit basic service initialisation, or better we have IOLib stuff - // initialise as basic OS services. - // - IOLibInit(); - OSlibkernInit(); - - gIOProgressBackbufferKey = OSSymbol::withCStringNoCopy(kIOProgressBackbufferKey); - gIORemoveOnReadProperties = OSSet::withObjects((const OSObject **) &gIOProgressBackbufferKey, 1); - - interruptAccountingInit(); - - rootNub = new IOPlatformExpertDevice; - - if( rootNub && rootNub->initWithArgs( p1, p2, p3, p4)) { - rootNub->attach( 0 ); - - /* If the bootstrap segment set up a function to record startup - * extensions, call it now. - */ - if (record_startup_extensions_function) { - record_startup_extensions_function(); - } - - rootNub->registerService(); + int debugFlags = 0; + + if (PE_parse_boot_argn( "io", &debugFlags, sizeof(debugFlags))) { + gIOKitDebug = debugFlags; + } + // Enable IOWaitQuiet panics on arm64 macOS except on KASAN. + // existing 3rd party KEXTs may hold the registry busy on x86 RELEASE kernels. + // Enabling this on other platforms is tracked in rdar://66364108 +#if XNU_TARGET_OS_OSX && defined(__arm64__) && !KASAN + else { + gIOKitDebug |= kIOWaitQuietPanics; + } +#endif + + if (PE_parse_boot_argn( "iotrace", &debugFlags, sizeof(debugFlags))) { + gIOKitTrace = debugFlags; + } + + // Compat for boot-args + gIOKitTrace |= (gIOKitDebug & kIOTraceCompatBootArgs); + + if (PE_parse_boot_argn( "pmtimeout", &debugFlags, sizeof(debugFlags))) { + gCanSleepTimeout = debugFlags; + } + + if (PE_parse_boot_argn( "dk", &debugFlags, sizeof(debugFlags))) { + gIODKDebug = debugFlags; + } + + + // + // Have to start IOKit environment before we attempt to start + // the C++ runtime environment. At some stage we have to clean up + // the initialisation path so that OS C++ can initialise independantly + // of iokit basic service initialisation, or better we have IOLib stuff + // initialise as basic OS services. + // + IOLibInit(); + OSlibkernInit(); + IOMachPortInitialize(); + devsw_init(); + + gIOProgressBackbufferKey = OSSymbol::withCStringNoCopy(kIOProgressBackbufferKey); + gIORemoveOnReadProperties = OSSet::withObjects((const OSObject **) &gIOProgressBackbufferKey, 1); + + interruptAccountingInit(); + + gRootNub = new IOPlatformExpertDevice; + if (__improbable(gRootNub == NULL)) { + panic("Failed to allocate IOKit root nub"); + } + bool ok = gRootNub->init(dtTop); + if (__improbable(!ok)) { + panic("Failed to initialize IOKit root nub"); + } + gRootNub->attach(NULL); + + /* If the bootstrap segment set up a function to record startup + * extensions, call it now. + */ + if (record_startup_extensions_function) { + record_startup_extensions_function(); + } +} + +void +ConfigureIOKit(void) +{ + assert(gRootNub != NULL); + gRootNub->configureDefaults(); +} + +void +StartIOKitMatching(void) +{ + assert(gRootNub != NULL); + bool ok = gRootNub->startIOServiceMatching(); + if (__improbable(!ok)) { + panic("Failed to start IOService matching"); + } #if !NO_KEXTD - /* Add a busy count to keep the registry busy until kextd has - * completely finished launching. This is decremented when kextd - * messages the kernel after the in-kernel linker has been - * removed and personalities have been sent. - */ - IOService::getServiceRoot()->adjustBusy(1); + /* Add a busy count to keep the registry busy until kextd has + * completely finished launching. This is decremented when kextd + * messages the kernel after the in-kernel linker has been + * removed and personalities have been sent. + */ + IOService::getServiceRoot()->adjustBusy(1); #endif - } } void IORegistrySetOSBuildVersion(char * build_version) { - IORegistryEntry * root = IORegistryEntry::getRegistryRoot(); + IORegistryEntry * root = IORegistryEntry::getRegistryRoot(); - if (root) { - if (build_version) { - root->setProperty(kOSBuildVersionKey, build_version); - } else { - root->removeProperty(kOSBuildVersionKey); - } - } + if (root) { + if (build_version) { + root->setProperty(kOSBuildVersionKey, build_version); + } else { + root->removeProperty(kOSBuildVersionKey); + } + } - return; + return; } void IORecordProgressBackbuffer(void * buffer, size_t size, uint32_t theme) { - IORegistryEntry * chosen; - if ((chosen = IORegistryEntry::fromPath(kIODeviceTreePlane ":/chosen"))) - { - chosen->setProperty(kIOProgressBackbufferKey, buffer, size); - chosen->setProperty(kIOProgressColorThemeKey, theme, 32); - - chosen->release(); - } -} + IORegistryEntry * chosen; + + if (((unsigned int) size) != size) { + return; + } + if ((chosen = IORegistryEntry::fromPath(kIODeviceTreePlane ":/chosen"))) { + chosen->setProperty(kIOProgressBackbufferKey, buffer, (unsigned int) size); + chosen->setProperty(kIOProgressColorThemeKey, theme, 32); + chosen->release(); + } +} }; /* extern "C" */