/*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2014 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
-/*
- * HISTORY
- */
#include <IOKit/IOCPU.h>
#include <IOKit/IODeviceTreeSupport.h>
#include <IOKit/pwr_mgt/RootDomain.h>
#include <IOKit/IOKitKeys.h>
#include <IOKit/IOTimeStamp.h>
+#include <IOKit/IOUserClient.h>
+#include <IOKit/IOKitDiagnosticsUserClient.h>
#include <IOKit/system.h>
#include <libkern/c++/OSContainers.h>
+#include <libkern/crypto/sha1.h>
+#include <libkern/OSAtomic.h>
extern "C" {
#include <machine/machine_routines.h>
#include <pexpert/pexpert.h>
+#include <uuid/uuid.h>
}
-/* Delay period for UPS halt */
-#define kUPSDelayHaltCPU_msec (1000*60*5)
-
void printDictionaryKeys (OSDictionary * inDictionary, char * inMsg);
-static void getCStringForObject (OSObject * inObj, char * outStr);
+static void getCStringForObject(OSObject *inObj, char *outStr, size_t outStrLen);
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
OSDefineMetaClassAndStructors(IOPlatformExpert, IOService)
OSMetaClassDefineReservedUsed(IOPlatformExpert, 0);
-
OSMetaClassDefineReservedUsed(IOPlatformExpert, 1);
-OSMetaClassDefineReservedUnused(IOPlatformExpert, 2);
-OSMetaClassDefineReservedUnused(IOPlatformExpert, 3);
-OSMetaClassDefineReservedUnused(IOPlatformExpert, 4);
+OSMetaClassDefineReservedUsed(IOPlatformExpert, 2);
+OSMetaClassDefineReservedUsed(IOPlatformExpert, 3);
+OSMetaClassDefineReservedUsed(IOPlatformExpert, 4);
+
OSMetaClassDefineReservedUnused(IOPlatformExpert, 5);
OSMetaClassDefineReservedUnused(IOPlatformExpert, 6);
OSMetaClassDefineReservedUnused(IOPlatformExpert, 7);
static IOPlatformExpert * gIOPlatform;
static OSDictionary * gIOInterruptControllers;
static IOLock * gIOInterruptControllersLock;
+static IODTNVRAM *gIOOptionsEntry;
OSSymbol * gPlatformInterruptControllerName;
return false;
// Override the mapper present flag is requested by boot arguments.
- if (PE_parse_boot_arg("dart", &debugFlags) && (debugFlags == 0))
+ if (PE_parse_boot_argn("dart", &debugFlags, sizeof (debugFlags)) && (debugFlags == 0))
removeProperty(kIOPlatformMapperPresentKey);
-
+ if (PE_parse_boot_argn("-x", &debugFlags, sizeof (debugFlags)))
+ removeProperty(kIOPlatformMapperPresentKey);
+
// Register the presence or lack thereof a system
// PCI address mapper with the IOMapper class
IOMapper::setMapperRequired(0 != getProperty(kIOPlatformMapperPresentKey));
int IOPlatformExpert::haltRestart(unsigned int type)
{
- if (type == kPEHangCPU) while (1);
+ if (type == kPEPanicSync) return 0;
+
+ if (type == kPEHangCPU) while (true) {}
if (type == kPEUPSDelayHaltCPU) {
- // Stall shutdown for 5 minutes, and if no outside force has
- // removed our power at that point, proceed with a reboot.
- IOSleep( kUPSDelayHaltCPU_msec );
+ // RestartOnPowerLoss feature was turned on, proceed with shutdown.
+ type = kPEHaltCPU;
+ }
- // Ideally we never reach this point.
+ // On ARM kPEPanicRestartCPU is supported in the drivers
+ if (type == kPEPanicRestartCPU)
+ type = kPERestartCPU;
- type = kPERestartCPU;
- }
- kprintf("platform halt restart\n");
if (PE_halt_restart) return (*PE_halt_restart)(type);
else return -1;
}
return kIOReturnSuccess;
}
+IOReturn IOPlatformExpert::deregisterInterruptController(OSSymbol *name)
+{
+ IOLockLock(gIOInterruptControllersLock);
+
+ gIOInterruptControllers->removeObject(name);
+
+ IOLockUnlock(gIOInterruptControllersLock);
+
+ return kIOReturnSuccess;
+}
+
IOInterruptController *IOPlatformExpert::lookUpInterruptController(OSSymbol *name)
{
OSObject *object;
return true;
}
+void IOPlatformExpert::getUTCTimeOfDay(clock_sec_t * secs, clock_nsec_t * nsecs)
+{
+ *secs = getGMTTimeOfDay();
+ *nsecs = 0;
+}
+
+void IOPlatformExpert::setUTCTimeOfDay(clock_sec_t secs, __unused clock_nsec_t nsecs)
+{
+ setGMTTimeOfDay(secs);
+}
+
//*********************************************************************************
// PMLog
PMLog(const char *who, unsigned long event,
unsigned long param1, unsigned long param2)
{
- UInt32 debugFlags = gIOKitDebug;
-
- if (debugFlags & kIOLogPower) {
-
- uint32_t nows, nowus;
+ clock_sec_t nows;
+ clock_usec_t nowus;
clock_get_system_microtime(&nows, &nowus);
nowus += (nows % 1000) * 1000000;
- kprintf("pm%u %x %.30s %d %x %x\n",
- nowus, (unsigned) current_thread(), who, // Identity
- (int) event, param1, param2); // Args
-
- if (debugFlags & kIOLogTracePower) {
- static const UInt32 sStartStopBitField[] =
- { 0x00000000, 0x00000040 }; // Only Program Hardware so far
-
- // Arcane formula from Hacker's Delight by Warren
- // abs(x) = ((int) x >> 31) ^ (x + ((int) x >> 31))
- UInt32 sgnevent = ((long) event >> 31);
- UInt32 absevent = sgnevent ^ (event + sgnevent);
- UInt32 code = IODBG_POWER(absevent);
-
- UInt32 bit = 1 << (absevent & 0x1f);
- if (absevent < sizeof(sStartStopBitField) * 8
- && (sStartStopBitField[absevent >> 5] & bit) ) {
- // Or in the START or END bits, Start = 1 & END = 2
- // If sgnevent == 0 then START - 0 => START
- // else if sgnevent == -1 then START - -1 => END
- code |= DBG_FUNC_START - sgnevent;
- }
-
- // Record the timestamp, wish I had a this pointer
- IOTimeStampConstant(code, (UInt32) who, event, param1, param2);
- }
- }
+ kprintf("pm%u %p %.30s %d %lx %lx\n",
+ nowus, OBFUSCATE(current_thread()), who, // Identity
+ (int) event, (long)OBFUSCATE(param1), (long)OBFUSCATE(param2)); // Args
}
root->init();
root->attach(this);
root->start(this);
- root->youAreRoot();
}
if ( mkey->isEqualTo ("name") ) {
char nameStr[64];
nameStr[0] = 0;
- getCStringForObject (inDictionary->getObject ("name"), nameStr );
+ getCStringForObject(inDictionary->getObject("name"), nameStr,
+ sizeof(nameStr));
if (strlen(nameStr) > 0)
IOLog ("%s name is %s\n", inMsg, nameStr);
}
mcoll->release ();
}
-static void getCStringForObject (OSObject * inObj, char * outStr)
+static void
+getCStringForObject(OSObject *inObj, char *outStr, size_t outStrLen)
{
char * buffer;
unsigned int len, i;
char * objString = (char *) (inObj->getMetaClass())->getClassName();
- if ((0 == strcmp(objString,"OSString")) || (0 == strcmp (objString, "OSSymbol")))
- strcpy (outStr, ((OSString *)inObj)->getCStringNoCopy());
+ if ((0 == strncmp(objString, "OSString", sizeof("OSString"))) ||
+ (0 == strncmp(objString, "OSSymbol", sizeof("OSSymbol"))))
+ strlcpy(outStr, ((OSString *)inObj)->getCStringNoCopy(), outStrLen);
- else if (0 == strcmp(objString,"OSData")) {
+ else if (0 == strncmp(objString, "OSData", sizeof("OSData"))) {
len = ((OSData *)inObj)->getLength();
buffer = (char *)((OSData *)inObj)->getBytesNoCopy();
if (buffer && (len > 0)) {
thread_call_param_t p0,
thread_call_param_t p1)
{
- int type = (int)p0;
+ int type = (int)(long)p0;
/* 30 seconds has elapsed - resume shutdown */
if(gIOPlatform) gIOPlatform->haltRestart(type);
int PEHaltRestart(unsigned int type)
{
- IOPMrootDomain *pmRootDomain = IOService::getPMRootDomain();
- bool noWaitForResponses;
+ IOPMrootDomain *pmRootDomain;
AbsoluteTime deadline;
thread_call_t shutdown_hang;
- unsigned int tell_type;
+ IORegistryEntry *node;
+ OSData *data;
+ uint32_t timeout = 30;
if(type == kPEHaltCPU || type == kPERestartCPU || type == kPEUPSDelayHaltCPU)
{
+ pmRootDomain = IOService::getPMRootDomain();
/* Notify IOKit PM clients of shutdown/restart
Clients subscribe to this message with a call to
IOService::registerInterest()
/* Spawn a thread that will panic in 30 seconds.
If all goes well the machine will be off by the time
- the timer expires.
+ the timer expires. If the device wants a different
+ timeout, use that value instead of 30 seconds.
*/
+#define RESTART_NODE_PATH "/chosen"
+ node = IORegistryEntry::fromPath( RESTART_NODE_PATH, gIODTPlane );
+ if ( node ) {
+ data = OSDynamicCast( OSData, node->getProperty( "halt-restart-timeout" ) );
+ if ( data && data->getLength() == 4 )
+ timeout = *((uint32_t *) data->getBytesNoCopy());
+ }
+
shutdown_hang = thread_call_allocate( &IOShutdownNotificationsTimedOut,
- (thread_call_param_t) type);
- clock_interval_to_deadline( 30, kSecondScale, &deadline );
+ (thread_call_param_t)(uintptr_t) type);
+ clock_interval_to_deadline( timeout, kSecondScale, &deadline );
thread_call_enter1_delayed( shutdown_hang, 0, deadline );
-
-
- if( kPEUPSDelayHaltCPU == type ) {
- tell_type = kPEHaltCPU;
- } else {
- tell_type = type;
- }
- noWaitForResponses = pmRootDomain->tellChangeDown2(tell_type);
+ pmRootDomain->handlePlatformHaltRestart(type);
/* This notification should have few clients who all do
their work synchronously.
In this "shutdown notification" context we don't give
drivers the option of working asynchronously and responding
later. PM internals make it very hard to wait for asynchronous
- replies. In fact, it's a bad idea to even be calling
- tellChangeDown2 from here at all.
+ replies.
*/
}
+ else if(type == kPEPanicRestartCPU || type == kPEPanicSync)
+ {
+ IOCPURunPlatformPanicActions(type);
+ }
if (gIOPlatform) return gIOPlatform->haltRestart(type);
else return -1;
else return 0;
}
-long PEGetGMTTimeOfDay(void)
+
+
+inline static int init_gIOOptionsEntry(void)
{
- long result = 0;
+ IORegistryEntry *entry;
+ void *nvram_entry;
+ volatile void **options;
+ int ret = -1;
- if( gIOPlatform)
- result = gIOPlatform->getGMTTimeOfDay();
+ if (gIOOptionsEntry)
+ return 0;
+
+ entry = IORegistryEntry::fromPath( "/options", gIODTPlane );
+ if (!entry)
+ return -1;
+
+ nvram_entry = (void *) OSDynamicCast(IODTNVRAM, entry);
+ if (!nvram_entry)
+ goto release;
+
+ options = (volatile void **) &gIOOptionsEntry;
+ if (!OSCompareAndSwapPtr(NULL, nvram_entry, options)) {
+ ret = 0;
+ goto release;
+ }
+
+ return 0;
+
+release:
+ entry->release();
+ return ret;
+
+}
+
+/* pass in a NULL value if you just want to figure out the len */
+boolean_t PEReadNVRAMProperty(const char *symbol, void *value,
+ unsigned int *len)
+{
+ OSObject *obj;
+ OSData *data;
+ unsigned int vlen;
+
+ if (!symbol || !len)
+ goto err;
+
+ if (init_gIOOptionsEntry() < 0)
+ goto err;
+
+ vlen = *len;
+ *len = 0;
+
+ obj = gIOOptionsEntry->getProperty(symbol);
+ if (!obj)
+ goto err;
+
+ /* convert to data */
+ data = OSDynamicCast(OSData, obj);
+ if (!data)
+ goto err;
+
+ *len = data->getLength();
+ vlen = min(vlen, *len);
+ if (value && vlen)
+ memcpy((void *) value, data->getBytesNoCopy(), vlen);
+
+ return TRUE;
+
+err:
+ return FALSE;
+}
+
+boolean_t
+PEWriteNVRAMBooleanProperty(const char *symbol, boolean_t value)
+{
+ const OSSymbol *sym = NULL;
+ OSBoolean *data = NULL;
+ bool ret = false;
+
+ if (symbol == NULL) {
+ goto exit;
+ }
+
+ if (init_gIOOptionsEntry() < 0) {
+ goto exit;
+ }
+
+ if ((sym = OSSymbol::withCStringNoCopy(symbol)) == NULL) {
+ goto exit;
+ }
+
+ data = value ? kOSBooleanTrue : kOSBooleanFalse;
+ ret = gIOOptionsEntry->setProperty(sym, data);
- return (result);
+ sym->release();
+
+ /* success, force the NVRAM to flush writes */
+ if (ret == true) {
+ gIOOptionsEntry->sync();
+ }
+
+exit:
+ return ret;
+}
+
+boolean_t PEWriteNVRAMProperty(const char *symbol, const void *value,
+ const unsigned int len)
+{
+ const OSSymbol *sym;
+ OSData *data;
+ bool ret = false;
+
+ if (!symbol || !value || !len)
+ goto err;
+
+ if (init_gIOOptionsEntry() < 0)
+ goto err;
+
+ sym = OSSymbol::withCStringNoCopy(symbol);
+ if (!sym)
+ goto err;
+
+ data = OSData::withBytes((void *) value, len);
+ if (!data)
+ goto sym_done;
+
+ ret = gIOOptionsEntry->setProperty(sym, data);
+ data->release();
+
+sym_done:
+ sym->release();
+
+ if (ret == true) {
+ gIOOptionsEntry->sync();
+ return TRUE;
+ }
+
+err:
+ return FALSE;
+}
+
+
+boolean_t PERemoveNVRAMProperty(const char *symbol)
+{
+ const OSSymbol *sym;
+
+ if (!symbol)
+ goto err;
+
+ if (init_gIOOptionsEntry() < 0)
+ goto err;
+
+ sym = OSSymbol::withCStringNoCopy(symbol);
+ if (!sym)
+ goto err;
+
+ gIOOptionsEntry->removeProperty(sym);
+
+ sym->release();
+
+ gIOOptionsEntry->sync();
+ return TRUE;
+
+err:
+ return FALSE;
+
+}
+
+long PEGetGMTTimeOfDay(void)
+{
+ clock_sec_t secs;
+ clock_usec_t usecs;
+
+ PEGetUTCTimeOfDay(&secs, &usecs);
+ return secs;
}
void PESetGMTTimeOfDay(long secs)
{
- if( gIOPlatform)
- gIOPlatform->setGMTTimeOfDay(secs);
+ PESetUTCTimeOfDay(secs, 0);
+}
+
+void PEGetUTCTimeOfDay(clock_sec_t * secs, clock_usec_t * usecs)
+{
+ clock_nsec_t nsecs = 0;
+
+ *secs = 0;
+ if (gIOPlatform)
+ gIOPlatform->getUTCTimeOfDay(secs, &nsecs);
+
+ assert(nsecs < NSEC_PER_SEC);
+ *usecs = nsecs / NSEC_PER_USEC;
+}
+
+void PESetUTCTimeOfDay(clock_sec_t secs, clock_usec_t usecs)
+{
+ assert(usecs < USEC_PER_SEC);
+ if (gIOPlatform)
+ gIOPlatform->setUTCTimeOfDay(secs, usecs * NSEC_PER_USEC);
}
} /* extern "C" */
void IOPlatformExpert::registerNVRAMController(IONVRAMController * caller)
{
+ OSData * data;
+ IORegistryEntry * entry;
+ OSString * string = 0;
+ uuid_string_t uuid;
+
+ entry = IORegistryEntry::fromPath( "/efi/platform", gIODTPlane );
+ if ( entry )
+ {
+ data = OSDynamicCast( OSData, entry->getProperty( "system-id" ) );
+ if ( data && data->getLength( ) == 16 )
+ {
+ SHA1_CTX context;
+ uint8_t digest[ SHA_DIGEST_LENGTH ];
+ const uuid_t space = { 0x2A, 0x06, 0x19, 0x90, 0xD3, 0x8D, 0x44, 0x40, 0xA1, 0x39, 0xC4, 0x97, 0x70, 0x37, 0x65, 0xAC };
+
+ SHA1Init( &context );
+ SHA1Update( &context, space, sizeof( space ) );
+ SHA1Update( &context, data->getBytesNoCopy( ), data->getLength( ) );
+ SHA1Final( digest, &context );
+
+ digest[ 6 ] = ( digest[ 6 ] & 0x0F ) | 0x50;
+ digest[ 8 ] = ( digest[ 8 ] & 0x3F ) | 0x80;
+
+ uuid_unparse( digest, uuid );
+ string = OSString::withCString( uuid );
+ }
+
+ entry->release( );
+ }
+
+ if ( string == 0 )
+ {
+ entry = IORegistryEntry::fromPath( "/options", gIODTPlane );
+ if ( entry )
+ {
+ data = OSDynamicCast( OSData, entry->getProperty( "platform-uuid" ) );
+ if ( data && data->getLength( ) == sizeof( uuid_t ) )
+ {
+ uuid_unparse( ( uint8_t * ) data->getBytesNoCopy( ), uuid );
+ string = OSString::withCString( uuid );
+ }
+
+ entry->release( );
+ }
+ }
+
+ if ( string )
+ {
+ getProvider( )->setProperty( kIOPlatformUUIDKey, string );
+ publishResource( kIOPlatformUUIDKey, string );
+
+ string->release( );
+ }
+
publishResource("IONVRAM");
}
if (waitForFunction) {
_resources = waitForService(resourceMatching(functionName));
} else {
- _resources = resources();
+ _resources = getResourceService();
}
if (_resources == 0) return kIOReturnUnsupported;
} else {
dtNVRAM->attach(this);
dtNVRAM->registerService();
+ options->release();
}
}
}
// Publish the cpus.
cpus = rootEntry->childFromPath( "cpus", gIODTPlane);
if ( cpus)
+ {
createNubs( this, IODTFindMatchingEntries( cpus, kIODTExclusive, 0));
+ cpus->release();
+ }
// publish top level, minus excludeList
createNubs( this, IODTFindMatchingEntries( rootEntry, kIODTExclusive, excludeList()));
ok = (0 != prop);
if( ok )
- strncpy( name, (const char *) prop->getBytesNoCopy(), maxLength );
+ strlcpy( name, (const char *) prop->getBytesNoCopy(), maxLength );
return( ok );
}
void * dtTop, void * p2, void * p3, void * p4 )
{
IORegistryEntry * dt = 0;
- void * argsData[ 4 ];
bool ok;
// dtTop may be zero on non- device tree systems
if( !ok)
return( false);
+ reserved = NULL;
workLoop = IOWorkLoop::workLoop();
if (!workLoop)
return false;
- argsData[ 0 ] = dtTop;
- argsData[ 1 ] = p2;
- argsData[ 2 ] = p3;
- argsData[ 3 ] = p4;
-
- setProperty("IOPlatformArgs", (void *)argsData, sizeof( argsData));
-
return( true);
}
return workLoop;
}
-void IOPlatformExpertDevice::free()
+IOReturn IOPlatformExpertDevice::setProperties( OSObject * properties )
{
- if (workLoop)
- workLoop->release();
+ OSDictionary * dictionary;
+ OSObject * object;
+ IOReturn status;
+
+ status = super::setProperties( properties );
+ if ( status != kIOReturnUnsupported ) return status;
+
+ status = IOUserClient::clientHasPrivilege( current_task( ), kIOClientPrivilegeAdministrator );
+ if ( status != kIOReturnSuccess ) return status;
+
+ dictionary = OSDynamicCast( OSDictionary, properties );
+ if ( dictionary == 0 ) return kIOReturnBadArgument;
+
+ object = dictionary->getObject( kIOPlatformUUIDKey );
+ if ( object )
+ {
+ IORegistryEntry * entry;
+ OSString * string;
+ uuid_t uuid;
+
+ string = ( OSString * ) getProperty( kIOPlatformUUIDKey );
+ if ( string ) return kIOReturnNotPermitted;
+
+ string = OSDynamicCast( OSString, object );
+ if ( string == 0 ) return kIOReturnBadArgument;
+
+ status = uuid_parse( string->getCStringNoCopy( ), uuid );
+ if ( status != 0 ) return kIOReturnBadArgument;
+
+ entry = IORegistryEntry::fromPath( "/options", gIODTPlane );
+ if ( entry )
+ {
+ entry->setProperty( "platform-uuid", uuid, sizeof( uuid_t ) );
+ entry->release( );
+ }
+
+ setProperty( kIOPlatformUUIDKey, string );
+ publishResource( kIOPlatformUUIDKey, string );
+
+ return kIOReturnSuccess;
+ }
+
+ return kIOReturnUnsupported;
}
-bool IOPlatformExpertDevice::attachToChild( IORegistryEntry * child,
- const IORegistryPlane * plane )
+IOReturn IOPlatformExpertDevice::newUserClient( task_t owningTask, void * securityID,
+ UInt32 type, OSDictionary * properties,
+ IOUserClient ** handler )
{
- return IOService::attachToChild( child, plane );
+ IOReturn err = kIOReturnSuccess;
+ IOUserClient * newConnect = 0;
+ IOUserClient * theConnect = 0;
+
+ switch (type)
+ {
+ case kIOKitDiagnosticsClientType:
+ newConnect = IOKitDiagnosticsClient::withTask(owningTask);
+ if (!newConnect) err = kIOReturnNotPermitted;
+ break;
+ default:
+ err = kIOReturnBadArgument;
+ }
+
+ if (newConnect)
+ {
+ if ((false == newConnect->attach(this))
+ || (false == newConnect->start(this)))
+ {
+ newConnect->detach( this );
+ newConnect->release();
+ }
+ else
+ theConnect = newConnect;
+ }
+
+ *handler = theConnect;
+ return (err);
+}
+
+void IOPlatformExpertDevice::free()
+{
+ if (workLoop)
+ workLoop->release();
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
OSDeclareDefaultStructors(IOPanicPlatform);
public:
- bool start(IOService * provider);
+ bool start(IOService * provider) APPLE_KEXT_OVERRIDE;
};
return false;
}
+
projects / apple / xnu.git / blobdiff