/*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2007-2012 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * 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.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <IOKit/IOLib.h>
#include <IOKit/IOPlatformExpert.h>
#include <IOKit/IOUserClient.h>
#include <IOKit/IOKitKeys.h>
+#include <IOKit/IOKitKeysPrivate.h>
+#include <kern/debug.h>
+#include <pexpert/pexpert.h>
+
+#if CONFIG_MACF
+extern "C" {
+#include <security/mac.h>
+#include <security/mac_framework.h>
+};
+#endif /* MAC */
#define super IOService
+#define kIONVRAMPrivilege kIOClientPrivilegeAdministrator
+//#define kIONVRAMPrivilege kIOClientPrivilegeLocalUser
+
OSDefineMetaClassAndStructors(IODTNVRAM, IOService);
bool IODTNVRAM::init(IORegistryEntry *old, const IORegistryPlane *plane)
_nvramImage = IONew(UInt8, kIODTNVRAMImageSize);
if (_nvramImage == 0) return false;
-
+
+ _nvramPartitionOffsets = OSDictionary::withCapacity(1);
+ if (_nvramPartitionOffsets == 0) return false;
+
+ _nvramPartitionLengths = OSDictionary::withCapacity(1);
+ if (_nvramPartitionLengths == 0) return false;
+
_registryPropertiesKey = OSSymbol::withCStringNoCopy("aapl,pci");
if (_registryPropertiesKey == 0) return false;
+ // <rdar://problem/9529235> race condition possible between
+ // IODTNVRAM and IONVRAMController (restore loses boot-args)
+ initProxyData();
+
return true;
}
+void IODTNVRAM::initProxyData(void)
+{
+ IORegistryEntry *entry;
+ const char *key = "nvram-proxy-data";
+ OSObject *prop;
+ OSData *data;
+ const void *bytes;
+
+ entry = IORegistryEntry::fromPath("/chosen", gIODTPlane);
+ if (entry != 0) {
+ prop = entry->getProperty(key);
+ if (prop != 0) {
+ data = OSDynamicCast(OSData, prop);
+ if (data != 0) {
+ bytes = data->getBytesNoCopy();
+ if ((bytes != 0) && (data->getLength() <= kIODTNVRAMImageSize)) {
+ bcopy(bytes, _nvramImage, data->getLength());
+ initNVRAMImage();
+ _isProxied = true;
+ }
+ }
+ }
+ entry->removeProperty(key);
+ entry->release();
+ }
+}
+
void IODTNVRAM::registerNVRAMController(IONVRAMController *nvram)
{
- UInt32 currentOffset = 0;
-
if (_nvramController != 0) return;
_nvramController = nvram;
- _nvramController->read(0, _nvramImage, kIODTNVRAMImageSize);
+ // <rdar://problem/9529235> race condition possible between
+ // IODTNVRAM and IONVRAMController (restore loses boot-args)
+ if (!_isProxied) {
+ _nvramController->read(0, _nvramImage, kIODTNVRAMImageSize);
+ initNVRAMImage();
+ } else {
+ IOLockLock(_ofLock);
+ (void) syncVariables();
+ IOLockUnlock(_ofLock);
+ }
+}
+
+void IODTNVRAM::initNVRAMImage(void)
+{
+ char partitionID[18];
+ UInt32 partitionOffset, partitionLength;
+ UInt32 freePartitionOffset, freePartitionSize;
+ UInt32 currentLength, currentOffset = 0;
+ OSNumber *partitionOffsetNumber, *partitionLengthNumber;
- // Find the offsets for the OF, XPRAM and NameRegistry partitions in NVRAM.
+ // Find the offsets for the OF, XPRAM, NameRegistry and PanicInfo partitions.
_ofPartitionOffset = 0xFFFFFFFF;
- _xpramPartitionOffset = 0xFFFFFFFF;
- _nrPartitionOffset = 0xFFFFFFFF;
- if (getPlatform()->getBootROMType()) {
- // Look through the partitions to find the OF, MacOS partitions.
- while (currentOffset < kIODTNVRAMImageSize) {
- if (strcmp((const char *)_nvramImage + currentOffset + 4, "common") == 0) {
- _ofPartitionOffset = currentOffset + 16;
- _ofPartitionSize =
- (((UInt16 *)(_nvramImage + currentOffset))[1] - 1) * 0x10;
- } else if (strcmp((const char *)_nvramImage + currentOffset + 4, "APL,MacOS75") == 0) {
- _xpramPartitionOffset = currentOffset + 16;
- _xpramPartitionSize = kIODTNVRAMXPRAMSize;
- _nrPartitionOffset = _xpramPartitionOffset + _xpramPartitionSize;
- _nrPartitionSize =
- (((UInt16 *)(_nvramImage + currentOffset))[1] - 1) * 0x10 -
- _xpramPartitionSize;
- }
- currentOffset += ((short *)(_nvramImage + currentOffset))[1] * 16;
+ _piPartitionOffset = 0xFFFFFFFF;
+ freePartitionOffset = 0xFFFFFFFF;
+ freePartitionSize = 0;
+
+ // Look through the partitions to find the OF, MacOS partitions.
+ while (currentOffset < kIODTNVRAMImageSize) {
+ currentLength = ((UInt16 *)(_nvramImage + currentOffset))[1] * 16;
+
+ if (currentLength < 16) break;
+ partitionOffset = currentOffset + 16;
+ partitionLength = currentLength - 16;
+ if ((partitionOffset + partitionLength) > kIODTNVRAMImageSize) break;
+
+ if (strncmp((const char *)_nvramImage + currentOffset + 4,
+ kIODTNVRAMOFPartitionName, 12) == 0) {
+ _ofPartitionOffset = partitionOffset;
+ _ofPartitionSize = partitionLength;
+ } else if (strncmp((const char *)_nvramImage + currentOffset + 4,
+ kIODTNVRAMXPRAMPartitionName, 12) == 0) {
+ } else if (strncmp((const char *)_nvramImage + currentOffset + 4,
+ kIODTNVRAMPanicInfoPartitonName, 12) == 0) {
+ _piPartitionOffset = partitionOffset;
+ _piPartitionSize = partitionLength;
+ } else if (strncmp((const char *)_nvramImage + currentOffset + 4,
+ kIODTNVRAMFreePartitionName, 12) == 0) {
+ freePartitionOffset = currentOffset;
+ freePartitionSize = currentLength;
+ } else {
+ // Construct the partition ID from the signature and name.
+ snprintf(partitionID, sizeof(partitionID), "0x%02x,",
+ *(UInt8 *)(_nvramImage + currentOffset));
+ strncpy(partitionID + 5,
+ (const char *)(_nvramImage + currentOffset + 4), 12);
+ partitionID[17] = '\0';
+
+ partitionOffsetNumber = OSNumber::withNumber(partitionOffset, 32);
+ partitionLengthNumber = OSNumber::withNumber(partitionLength, 32);
+
+ // Save the partition offset and length
+ _nvramPartitionOffsets->setObject(partitionID, partitionOffsetNumber);
+ _nvramPartitionLengths->setObject(partitionID, partitionLengthNumber);
+
+ partitionOffsetNumber->release();
+ partitionLengthNumber->release();
}
- } else {
- // Use the fixed address for old world machines.
- _ofPartitionOffset = 0x1800;
- _ofPartitionSize = 0x0800;
- _xpramPartitionOffset = 0x1300;
- _xpramPartitionSize = 0x0100;
- _nrPartitionOffset = 0x1400;
- _nrPartitionSize = 0x0400;
+ currentOffset += currentLength;
}
if (_ofPartitionOffset != 0xFFFFFFFF)
_ofImage = _nvramImage + _ofPartitionOffset;
- if (_xpramPartitionOffset != 0xFFFFFFFF)
- _xpramImage = _nvramImage + _xpramPartitionOffset;
- if (_nrPartitionOffset != 0xFFFFFFFF)
- _nrImage = _nvramImage + _nrPartitionOffset;
+ if (_piPartitionOffset == 0xFFFFFFFF) {
+ if (freePartitionSize > 0x20) {
+ // Set the signature to 0xa1.
+ _nvramImage[freePartitionOffset] = 0xa1;
+ // Set the checksum to 0.
+ _nvramImage[freePartitionOffset + 1] = 0;
+ // Set the name for the Panic Info partition.
+ strncpy((char *)(_nvramImage + freePartitionOffset + 4),
+ kIODTNVRAMPanicInfoPartitonName, 12);
+
+ // Calculate the partition offset and size.
+ _piPartitionOffset = freePartitionOffset + 0x10;
+ _piPartitionSize = 0x800;
+ if (_piPartitionSize + 0x20 > freePartitionSize)
+ _piPartitionSize = freePartitionSize - 0x20;
+
+ _piImage = _nvramImage + _piPartitionOffset;
+
+ // Zero the new partition.
+ bzero(_piImage, _piPartitionSize);
+
+ // Set the partition size.
+ *(UInt16 *)(_nvramImage + freePartitionOffset + 2) =
+ (_piPartitionSize / 0x10) + 1;
+
+ // Set the partition checksum.
+ _nvramImage[freePartitionOffset + 1] =
+ calculatePartitionChecksum(_nvramImage + freePartitionOffset);
+
+ // Calculate the free partition offset and size.
+ freePartitionOffset += _piPartitionSize + 0x10;
+ freePartitionSize -= _piPartitionSize + 0x10;
+
+ // Set the signature to 0x7f.
+ _nvramImage[freePartitionOffset] = 0x7f;
+ // Set the checksum to 0.
+ _nvramImage[freePartitionOffset + 1] = 0;
+ // Set the name for the free partition.
+ strncpy((char *)(_nvramImage + freePartitionOffset + 4),
+ kIODTNVRAMFreePartitionName, 12);
+ // Set the partition size.
+ *(UInt16 *)(_nvramImage + freePartitionOffset + 2) =
+ freePartitionSize / 0x10;
+ // Set the partition checksum.
+ _nvramImage[freePartitionOffset + 1] =
+ calculatePartitionChecksum(_nvramImage + freePartitionOffset);
+
+ if (_nvramController != 0) {
+ _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
+ }
+ }
+ } else {
+ _piImage = _nvramImage + _piPartitionOffset;
+ }
+
+ _lastDeviceSync = 0;
+ _freshInterval = TRUE; // we will allow sync() even before the first 15 minutes have passed.
+
initOFVariables();
}
-void IODTNVRAM::sync(void)
+void IODTNVRAM::syncInternal(bool rateLimit)
{
- if (!_nvramImageDirty && !_ofImageDirty) return;
-
- syncOFVariables();
+ // Don't try to perform controller operations if none has been registered.
+ if (_nvramController == 0) return;
+
+ // Rate limit requests to sync. Drivers that need this rate limiting will
+ // shadow the data and only write to flash when they get a sync call
+ if (rateLimit && !safeToSync()) return;
- _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
_nvramController->sync();
-
- _nvramImageDirty = false;
}
-bool IODTNVRAM::serializeProperties(OSSerialize *serialize) const
+void IODTNVRAM::sync(void)
+{
+ syncInternal(false);
+}
+
+bool IODTNVRAM::serializeProperties(OSSerialize *s) const
{
- bool result;
+ bool result, hasPrivilege;
UInt32 variablePerm;
const OSSymbol *key;
- OSDictionary *dict, *tmpDict = 0;
+ OSDictionary *dict;
OSCollectionIterator *iter = 0;
- if (_ofDict == 0) return false;
-
// Verify permissions.
- result = IOUserClient::clientHasPrivilege(current_task(), kIOClientPrivilegeAdministrator);
- if (result != kIOReturnSuccess) {
- tmpDict = OSDictionary::withCapacity(1);
- if (tmpDict == 0) return false;
-
- iter = OSCollectionIterator::withCollection(_ofDict);
- if (iter == 0) return false;
-
+ hasPrivilege = (kIOReturnSuccess == IOUserClient::clientHasPrivilege(current_task(), kIONVRAMPrivilege));
+
+ if (_ofDict == 0) {
+ /* No nvram. Return an empty dictionary. */
+ dict = OSDictionary::withCapacity(1);
+ if (dict == 0) return false;
+ } else {
+ IOLockLock(_ofLock);
+ dict = OSDictionary::withDictionary(_ofDict);
+ IOLockUnlock(_ofLock);
+ if (dict == 0) return false;
+
+ /* Copy properties with client privilege. */
+ iter = OSCollectionIterator::withCollection(dict);
+ if (iter == 0) {
+ dict->release();
+ return false;
+ }
while (1) {
key = OSDynamicCast(OSSymbol, iter->getNextObject());
if (key == 0) break;
variablePerm = getOFVariablePerm(key);
- if (variablePerm != kOFVariablePermRootOnly) {
- tmpDict->setObject(key, _ofDict->getObject(key));
+ if ((hasPrivilege || (variablePerm != kOFVariablePermRootOnly)) &&
+ ( ! (variablePerm == kOFVariablePermKernelOnly && current_task() != kernel_task) )
+#if CONFIG_MACF
+ && (current_task() == kernel_task || mac_iokit_check_nvram_get(kauth_cred_get(), key->getCStringNoCopy()) == 0)
+#endif
+ ) { }
+ else {
+ dict->removeObject(key);
+ iter->reset();
}
}
- dict = tmpDict;
- } else {
- dict = _ofDict;
}
-
- result = dict->serialize(serialize);
-
- if (tmpDict != 0) tmpDict->release();
+
+ result = dict->serialize(s);
+
+ dict->release();
if (iter != 0) iter->release();
return result;
}
-OSObject *IODTNVRAM::getProperty(const OSSymbol *aKey) const
+OSObject *IODTNVRAM::copyProperty(const OSSymbol *aKey) const
{
IOReturn result;
UInt32 variablePerm;
+ OSObject *theObject;
if (_ofDict == 0) return 0;
// Verify permissions.
- result = IOUserClient::clientHasPrivilege(current_task(), "root");
+ variablePerm = getOFVariablePerm(aKey);
+ result = IOUserClient::clientHasPrivilege(current_task(), kIONVRAMPrivilege);
if (result != kIOReturnSuccess) {
- variablePerm = getOFVariablePerm(aKey);
if (variablePerm == kOFVariablePermRootOnly) return 0;
}
-
- return _ofDict->getObject(aKey);
+ if (variablePerm == kOFVariablePermKernelOnly && current_task() != kernel_task) return 0;
+
+#if CONFIG_MACF
+ if (current_task() != kernel_task &&
+ mac_iokit_check_nvram_get(kauth_cred_get(), aKey->getCStringNoCopy()) != 0)
+ return 0;
+#endif
+
+ IOLockLock(_ofLock);
+ theObject = _ofDict->getObject(aKey);
+ if (theObject) theObject->retain();
+ IOLockUnlock(_ofLock);
+
+ return theObject;
}
-OSObject *IODTNVRAM::getProperty(const char *aKey) const
+OSObject *IODTNVRAM::copyProperty(const char *aKey) const
{
const OSSymbol *keySymbol;
OSObject *theObject = 0;
- keySymbol = OSSymbol::withCStringNoCopy(aKey);
+ keySymbol = OSSymbol::withCString(aKey);
if (keySymbol != 0) {
- theObject = getProperty(keySymbol);
+ theObject = copyProperty(keySymbol);
keySymbol->release();
}
return theObject;
}
+OSObject *IODTNVRAM::getProperty(const OSSymbol *aKey) const
+{
+ OSObject *theObject;
+
+ theObject = copyProperty(aKey);
+ if (theObject) theObject->release();
+
+ return theObject;
+}
+
+OSObject *IODTNVRAM::getProperty(const char *aKey) const
+{
+ OSObject *theObject;
+
+ theObject = copyProperty(aKey);
+ if (theObject) theObject->release();
+
+ return theObject;
+}
+
bool IODTNVRAM::setProperty(const OSSymbol *aKey, OSObject *anObject)
{
bool result;
UInt32 propType, propPerm;
OSString *tmpString;
- OSObject *propObject = 0;
-
+ OSObject *propObject = 0, *oldObject;
+
if (_ofDict == 0) return false;
-
+
// Verify permissions.
- result = IOUserClient::clientHasPrivilege(current_task(), "root");
- if (result != kIOReturnSuccess) {
- propPerm = getOFVariablePerm(aKey);
+ propPerm = getOFVariablePerm(aKey);
+ if (IOUserClient::clientHasPrivilege(current_task(), kIONVRAMPrivilege) != kIOReturnSuccess) {
if (propPerm != kOFVariablePermUserWrite) return false;
}
-
- // Don't allow creation of new properties on old world machines.
- if (getPlatform()->getBootROMType() == 0) {
- if (_ofDict->getObject(aKey) == 0) return false;
- }
+ if (propPerm == kOFVariablePermKernelOnly && current_task() != kernel_task) return 0;
+
+ // Don't allow change of 'aapl,panic-info'.
+ if (aKey->isEqualTo(kIODTNVRAMPanicInfoKey)) return false;
+
+#if CONFIG_MACF
+ if (current_task() != kernel_task &&
+ mac_iokit_check_nvram_set(kauth_cred_get(), aKey->getCStringNoCopy(), anObject) != 0)
+ return false;
+#endif
// Make sure the object is of the correct type.
propType = getOFVariableType(aKey);
case kOFVariableTypeBoolean :
propObject = OSDynamicCast(OSBoolean, anObject);
break;
-
+
case kOFVariableTypeNumber :
propObject = OSDynamicCast(OSNumber, anObject);
break;
-
+
case kOFVariableTypeString :
propObject = OSDynamicCast(OSString, anObject);
break;
-
+
case kOFVariableTypeData :
propObject = OSDynamicCast(OSData, anObject);
if (propObject == 0) {
}
break;
}
-
+
if (propObject == 0) return false;
-
+
+ IOLockLock(_ofLock);
+
+ oldObject = _ofDict->getObject(aKey);
+ if (oldObject) {
+ oldObject->retain();
+ }
result = _ofDict->setObject(aKey, propObject);
-
+
if (result) {
- if (getPlatform()->getBootROMType() == 0) {
- updateOWBootArgs(aKey, propObject);
+ if (syncVariables() != kIOReturnSuccess) {
+ if (oldObject) {
+ _ofDict->setObject(aKey, oldObject);
+ }
+ else {
+ _ofDict->removeObject(aKey);
+ }
+ (void) syncVariables();
+ result = false;
}
-
- _ofImageDirty = true;
}
-
+
+ if (oldObject) {
+ oldObject->release();
+ }
+
+ IOLockUnlock(_ofLock);
+
return result;
}
+void IODTNVRAM::removeProperty(const OSSymbol *aKey)
+{
+ bool result;
+ UInt32 propPerm;
+
+ if (_ofDict == 0) return;
+
+ // Verify permissions.
+ propPerm = getOFVariablePerm(aKey);
+ result = IOUserClient::clientHasPrivilege(current_task(), kIOClientPrivilegeAdministrator);
+ if (result != kIOReturnSuccess) {
+ if (propPerm != kOFVariablePermUserWrite) return;
+ }
+ if (propPerm == kOFVariablePermKernelOnly && current_task() != kernel_task) return;
+
+ // Don't allow change of 'aapl,panic-info'.
+ if (aKey->isEqualTo(kIODTNVRAMPanicInfoKey)) return;
+
+#if CONFIG_MACF
+ if (current_task() != kernel_task &&
+ mac_iokit_check_nvram_delete(kauth_cred_get(), aKey->getCStringNoCopy()) != 0)
+ return;
+#endif
+
+ // If the object exists, remove it from the dictionary.
+
+ IOLockLock(_ofLock);
+ result = _ofDict->getObject(aKey) != 0;
+ if (result) {
+ _ofDict->removeObject(aKey);
+ }
+
+ if (result) {
+ (void) syncVariables();
+ }
+
+ IOLockUnlock(_ofLock);
+}
+
IOReturn IODTNVRAM::setProperties(OSObject *properties)
{
bool result = true;
OSObject *object;
const OSSymbol *key;
+ const OSString *tmpStr;
OSDictionary *dict;
OSCollectionIterator *iter;
object = dict->getObject(key);
if (object == 0) continue;
- result = setProperty(key, object);
+ if (key->isEqualTo(kIONVRAMDeletePropertyKey)) {
+ tmpStr = OSDynamicCast(OSString, object);
+ if (tmpStr != 0) {
+ key = OSSymbol::withString(tmpStr);
+ removeProperty(key);
+ key->release();
+ result = true;
+ } else {
+ result = false;
+ }
+ } else if(key->isEqualTo(kIONVRAMSyncNowPropertyKey) || key->isEqualTo(kIONVRAMForceSyncNowPropertyKey)) {
+ tmpStr = OSDynamicCast(OSString, object);
+ if (tmpStr != 0) {
+
+ result = true;
+
+ // We still want to throttle NVRAM commit rate for SyncNow. ForceSyncNow is provided as a really big hammer.
+
+ syncInternal(key->isEqualTo(kIONVRAMSyncNowPropertyKey));
+
+ } else {
+ result = false;
+ }
+ }
+ else {
+ result = setProperty(key, object);
+ }
+
}
iter->release();
IOReturn IODTNVRAM::readXPRAM(IOByteCount offset, UInt8 *buffer,
IOByteCount length)
{
- if (_xpramImage == 0) return kIOReturnUnsupported;
-
- if ((buffer == 0) || (length <= 0) || (offset < 0) ||
- (offset + length > kIODTNVRAMXPRAMSize))
- return kIOReturnBadArgument;
-
- bcopy(_nvramImage + _xpramPartitionOffset + offset, buffer, length);
-
- return kIOReturnSuccess;
+ return kIOReturnUnsupported;
}
IOReturn IODTNVRAM::writeXPRAM(IOByteCount offset, UInt8 *buffer,
IOByteCount length)
{
- if (_xpramImage == 0) return kIOReturnUnsupported;
-
- if ((buffer == 0) || (length <= 0) || (offset < 0) ||
- (offset + length > kIODTNVRAMXPRAMSize))
- return kIOReturnBadArgument;
-
- bcopy(buffer, _nvramImage + _xpramPartitionOffset + offset, length);
-
- _nvramImageDirty = true;
-
- return kIOReturnSuccess;
+ return kIOReturnUnsupported;
}
IOReturn IODTNVRAM::readNVRAMProperty(IORegistryEntry *entry,
{
IOReturn err;
- if (getPlatform()->getBootROMType())
- err = readNVRAMPropertyType1(entry, name, value);
- else
- err = readNVRAMPropertyType0(entry, name, value);
+ err = readNVRAMPropertyType1(entry, name, value);
return err;
}
{
IOReturn err;
- if (getPlatform()->getBootROMType())
- err = writeNVRAMPropertyType1(entry, name, value);
- else
- err = writeNVRAMPropertyType0(entry, name, value);
+ err = writeNVRAMPropertyType1(entry, name, value);
return err;
}
+OSDictionary *IODTNVRAM::getNVRAMPartitions(void)
+{
+ return _nvramPartitionLengths;
+}
+IOReturn IODTNVRAM::readNVRAMPartition(const OSSymbol *partitionID,
+ IOByteCount offset, UInt8 *buffer,
+ IOByteCount length)
+{
+ OSNumber *partitionOffsetNumber, *partitionLengthNumber;
+ UInt32 partitionOffset, partitionLength, end;
+
+ partitionOffsetNumber =
+ (OSNumber *)_nvramPartitionOffsets->getObject(partitionID);
+ partitionLengthNumber =
+ (OSNumber *)_nvramPartitionLengths->getObject(partitionID);
+
+ if ((partitionOffsetNumber == 0) || (partitionLengthNumber == 0))
+ return kIOReturnNotFound;
+
+ partitionOffset = partitionOffsetNumber->unsigned32BitValue();
+ partitionLength = partitionLengthNumber->unsigned32BitValue();
+
+ if (os_add_overflow(offset, length, &end)) return kIOReturnBadArgument;
+ if ((buffer == 0) || (length == 0) || (end > partitionLength))
+ return kIOReturnBadArgument;
+
+ bcopy(_nvramImage + partitionOffset + offset, buffer, length);
+
+ return kIOReturnSuccess;
+}
-// Private methods for Open Firmware variable access.
+IOReturn IODTNVRAM::writeNVRAMPartition(const OSSymbol *partitionID,
+ IOByteCount offset, UInt8 *buffer,
+ IOByteCount length)
+{
+ OSNumber *partitionOffsetNumber, *partitionLengthNumber;
+ UInt32 partitionOffset, partitionLength, end;
+
+ partitionOffsetNumber =
+ (OSNumber *)_nvramPartitionOffsets->getObject(partitionID);
+ partitionLengthNumber =
+ (OSNumber *)_nvramPartitionLengths->getObject(partitionID);
+
+ if ((partitionOffsetNumber == 0) || (partitionLengthNumber == 0))
+ return kIOReturnNotFound;
+
+ partitionOffset = partitionOffsetNumber->unsigned32BitValue();
+ partitionLength = partitionLengthNumber->unsigned32BitValue();
+
+ if (os_add_overflow(offset, length, &end)) return kIOReturnBadArgument;
+ if ((buffer == 0) || (length == 0) || (end > partitionLength))
+ return kIOReturnBadArgument;
+
+ bcopy(buffer, _nvramImage + partitionOffset + offset, length);
+
+ if (_nvramController != 0) {
+ _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
+ }
+
+ return kIOReturnSuccess;
+}
-struct OWVariablesHeader {
- UInt16 owMagic;
- UInt8 owVersion;
- UInt8 owPages;
- UInt16 owChecksum;
- UInt16 owHere;
- UInt16 owTop;
- UInt16 owNext;
- UInt32 owFlags;
- UInt32 owNumbers[9];
- struct {
- UInt16 offset;
- UInt16 length;
- } owStrings[10];
-};
-typedef struct OWVariablesHeader OWVariablesHeader;
+IOByteCount IODTNVRAM::savePanicInfo(UInt8 *buffer, IOByteCount length)
+{
+ if ((_piImage == 0) || (length <= 0)) return 0;
+
+ if (length > (_piPartitionSize - 4))
+ length = _piPartitionSize - 4;
+
+ // Save the Panic Info.
+ bcopy(buffer, _piImage + 4, length);
+
+ // Save the Panic Info length.
+ *(UInt32 *)_piImage = length;
+
+ if (_nvramController != 0) {
+ _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
+ }
+ /*
+ * This prevents OF variables from being committed if the system has panicked
+ */
+ _systemPaniced = true;
+ /* The call to sync() forces the NVRAM controller to write the panic info
+ * partition to NVRAM.
+ */
+ sync();
+
+ return length;
+}
+
+// Private methods
+
+UInt8 IODTNVRAM::calculatePartitionChecksum(UInt8 *partitionHeader)
+{
+ UInt8 cnt, isum, csum = 0;
+
+ for (cnt = 0; cnt < 0x10; cnt++) {
+ isum = csum + partitionHeader[cnt];
+ if (isum < csum) isum++;
+ csum = isum;
+ }
+
+ return csum;
+}
IOReturn IODTNVRAM::initOFVariables(void)
{
- UInt32 cnt, propOffset, propType;
+ UInt32 cnt;
UInt8 *propName, *propData;
UInt32 propNameLength, propDataLength;
const OSSymbol *propSymbol;
OSObject *propObject;
- OWVariablesHeader *owHeader;
if (_ofImage == 0) return kIOReturnNotReady;
- _ofDict = OSDictionary::withCapacity(1);
- if (_ofDict == 0) return kIOReturnNoMemory;
+ _ofDict = OSDictionary::withCapacity(1);
+ _ofLock = IOLockAlloc();
+ if (!_ofDict || !_ofLock) return kIOReturnNoMemory;
- if (getPlatform()->getBootROMType()) {
- cnt = 0;
- while (cnt < _ofPartitionSize) {
- // Break if there is no name.
- if (_ofImage[cnt] == '\0') break;
-
- // Find the length of the name.
- propName = _ofImage + cnt;
- for (propNameLength = 0; (cnt + propNameLength) < _ofPartitionSize;
- propNameLength++) {
- if (_ofImage[cnt + propNameLength] == '=') break;
- }
-
- // Break if the name goes past the end of the partition.
- if ((cnt + propNameLength) >= _ofPartitionSize) break;
- cnt += propNameLength + 1;
-
- propData = _ofImage + cnt;
- for (propDataLength = 0; (cnt + propDataLength) < _ofPartitionSize;
- propDataLength++) {
- if (_ofImage[cnt + propDataLength] == '\0') break;
- }
-
- // Break if the data goes past the end of the partition.
- if ((cnt + propDataLength) >= _ofPartitionSize) break;
- cnt += propDataLength + 1;
-
- if (convertPropToObject(propName, propNameLength,
- propData, propDataLength,
- &propSymbol, &propObject)) {
- _ofDict->setObject(propSymbol, propObject);
- propSymbol->release();
- propObject->release();
- }
- }
+ cnt = 0;
+ while (cnt < _ofPartitionSize) {
+ // Break if there is no name.
+ if (_ofImage[cnt] == '\0') break;
- // Create the boot-args property if it is not in the dictionary.
- if (_ofDict->getObject("boot-args") == 0) {
- propObject = OSString::withCStringNoCopy("");
- if (propObject != 0) {
- _ofDict->setObject("boot-args", propObject);
- propObject->release();
- }
+ // Find the length of the name.
+ propName = _ofImage + cnt;
+ for (propNameLength = 0; (cnt + propNameLength) < _ofPartitionSize;
+ propNameLength++) {
+ if (_ofImage[cnt + propNameLength] == '=') break;
}
- } else {
- owHeader = (OWVariablesHeader *)_ofImage;
- if (!validateOWChecksum(_ofImage)) {
- _ofDict->release();
- _ofDict = 0;
- return kIOReturnBadMedia;
+
+ // Break if the name goes past the end of the partition.
+ if ((cnt + propNameLength) >= _ofPartitionSize) break;
+ cnt += propNameLength + 1;
+
+ propData = _ofImage + cnt;
+ for (propDataLength = 0; (cnt + propDataLength) < _ofPartitionSize;
+ propDataLength++) {
+ if (_ofImage[cnt + propDataLength] == '\0') break;
}
- cnt = 0;
- while (1) {
- if (!getOWVariableInfo(cnt++, &propSymbol, &propType, &propOffset))
- break;
-
- switch (propType) {
- case kOFVariableTypeBoolean :
- propObject = OSBoolean::withBoolean(owHeader->owFlags & propOffset);
- break;
-
- case kOFVariableTypeNumber :
- propObject = OSNumber::withNumber(owHeader->owNumbers[propOffset], 32);
- break;
-
- case kOFVariableTypeString :
- propData = _ofImage + owHeader->owStrings[propOffset].offset -
- _ofPartitionOffset;
- propDataLength = owHeader->owStrings[propOffset].length;
- propName = IONew(UInt8, propDataLength + 1);
- if (propName != 0) {
- strncpy((char *)propName, (const char *)propData, propDataLength);
- propName[propDataLength] = '\0';
- propObject = OSString::withCString((const char *)propName);
- IODelete(propName, UInt8, propDataLength + 1);
- }
- break;
- }
-
- if (propObject == 0) break;
-
+ // Break if the data goes past the end of the partition.
+ if ((cnt + propDataLength) >= _ofPartitionSize) break;
+ cnt += propDataLength + 1;
+
+ if (convertPropToObject(propName, propNameLength,
+ propData, propDataLength,
+ &propSymbol, &propObject)) {
_ofDict->setObject(propSymbol, propObject);
propSymbol->release();
propObject->release();
}
-
- // Create the boot-args property.
- propSymbol = OSSymbol::withCString("boot-command");
- if (propSymbol != 0) {
- propObject = _ofDict->getObject(propSymbol);
- if (propObject != 0) {
- updateOWBootArgs(propSymbol, propObject);
- }
- propSymbol->release();
+ }
+
+ // Create the boot-args property if it is not in the dictionary.
+ if (_ofDict->getObject("boot-args") == 0) {
+ propObject = OSString::withCStringNoCopy("");
+ if (propObject != 0) {
+ _ofDict->setObject("boot-args", propObject);
+ propObject->release();
}
}
+ if (_piImage != 0) {
+ propDataLength = *(UInt32 *)_piImage;
+ if ((propDataLength != 0) && (propDataLength <= (_piPartitionSize - 4))) {
+ propObject = OSData::withBytes(_piImage + 4, propDataLength);
+ _ofDict->setObject(kIODTNVRAMPanicInfoKey, propObject);
+ propObject->release();
+
+ // Clear the length from _piImage and mark dirty.
+ *(UInt32 *)_piImage = 0;
+ if (_nvramController != 0) {
+ _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
+ }
+ }
+ }
+
return kIOReturnSuccess;
}
IOReturn IODTNVRAM::syncOFVariables(void)
+{
+ return kIOReturnUnsupported;
+}
+
+IOReturn IODTNVRAM::syncVariables(void)
{
bool ok;
- UInt32 cnt, length, maxLength;
- UInt32 curOffset, tmpOffset, tmpType, tmpDataLength;
- UInt8 *buffer, *tmpBuffer, *tmpData;
+ UInt32 length, maxLength;
+ UInt8 *buffer, *tmpBuffer;
const OSSymbol *tmpSymbol;
OSObject *tmpObject;
- OSBoolean *tmpBoolean;
- OSNumber *tmpNumber;
- OSString *tmpString;
OSCollectionIterator *iter;
- OWVariablesHeader *owHeader, *owHeaderOld;
-
- if ((_ofImage == 0) || (_ofDict == 0)) return kIOReturnNotReady;
-
- if (!_ofImageDirty) return kIOReturnSuccess;
-
- if (getPlatform()->getBootROMType()) {
- buffer = tmpBuffer = IONew(UInt8, _ofPartitionSize);
- if (buffer == 0) return kIOReturnNoMemory;
- bzero(buffer, _ofPartitionSize);
-
- ok = true;
- maxLength = _ofPartitionSize;
-
- iter = OSCollectionIterator::withCollection(_ofDict);
- if (iter == 0) ok = false;
-
- while (ok) {
- tmpSymbol = OSDynamicCast(OSSymbol, iter->getNextObject());
- if (tmpSymbol == 0) break;
-
- tmpObject = _ofDict->getObject(tmpSymbol);
-
- length = maxLength;
- ok = convertObjectToProp(tmpBuffer, &length, tmpSymbol, tmpObject);
- if (ok) {
- tmpBuffer += length;
- maxLength -= length;
- }
- }
- iter->release();
-
- if (ok) {
- bcopy(buffer, _ofImage, _ofPartitionSize);
- }
-
- IODelete(buffer, UInt8, _ofPartitionSize);
-
- if (!ok) return kIOReturnBadArgument;
- } else {
- buffer = IONew(UInt8, _ofPartitionSize);
- if (buffer == 0) return kIOReturnNoMemory;
- bzero(buffer, _ofPartitionSize);
-
- owHeader = (OWVariablesHeader *)buffer;
- owHeaderOld = (OWVariablesHeader *)_ofImage;
-
- owHeader->owMagic = owHeaderOld->owMagic;
- owHeader->owVersion = owHeaderOld->owVersion;
- owHeader->owPages = owHeaderOld->owPages;
-
- curOffset = _ofPartitionSize;
-
- ok = true;
- cnt = 0;
- while (ok) {
- if (!getOWVariableInfo(cnt++, &tmpSymbol, &tmpType, &tmpOffset))
- break;
-
- tmpObject = _ofDict->getObject(tmpSymbol);
-
- switch (tmpType) {
- case kOFVariableTypeBoolean :
- tmpBoolean = OSDynamicCast(OSBoolean, tmpObject);
- if (tmpBoolean->getValue()) owHeader->owFlags |= tmpOffset;
- break;
-
- case kOFVariableTypeNumber :
- tmpNumber = OSDynamicCast(OSNumber, tmpObject);
- owHeader->owNumbers[tmpOffset] = tmpNumber->unsigned32BitValue();
- break;
-
- case kOFVariableTypeString :
- tmpString = OSDynamicCast(OSString, tmpObject);
- tmpData = (UInt8 *) tmpString->getCStringNoCopy();
- tmpDataLength = tmpString->getLength();
-
- if ((curOffset - tmpDataLength) < sizeof(OWVariablesHeader)) {
- ok = false;
- break;
- }
-
- owHeader->owStrings[tmpOffset].length = tmpDataLength;
- curOffset -= tmpDataLength;
- owHeader->owStrings[tmpOffset].offset = curOffset + _ofPartitionOffset;
- if (tmpDataLength != 0)
- bcopy(tmpData, buffer + curOffset, tmpDataLength);
- break;
- }
- }
-
+
+ IOLockAssert(_ofLock, kIOLockAssertOwned);
+
+ if ((_ofImage == 0) || (_ofDict == 0) || _systemPaniced) return kIOReturnNotReady;
+
+ buffer = tmpBuffer = IONew(UInt8, _ofPartitionSize);
+ if (buffer == 0) return kIOReturnNoMemory;
+ bzero(buffer, _ofPartitionSize);
+
+ ok = true;
+ maxLength = _ofPartitionSize;
+
+ iter = OSCollectionIterator::withCollection(_ofDict);
+ if (iter == 0) ok = false;
+
+ while (ok) {
+ tmpSymbol = OSDynamicCast(OSSymbol, iter->getNextObject());
+ if (tmpSymbol == 0) break;
+
+ // Don't save 'aapl,panic-info'.
+ if (tmpSymbol->isEqualTo(kIODTNVRAMPanicInfoKey)) continue;
+
+ tmpObject = _ofDict->getObject(tmpSymbol);
+
+ length = maxLength;
+ ok = convertObjectToProp(tmpBuffer, &length, tmpSymbol, tmpObject);
if (ok) {
- owHeader->owHere = _ofPartitionOffset + sizeof(OWVariablesHeader);
- owHeader->owTop = _ofPartitionOffset + curOffset;
- owHeader->owNext = 0;
-
- owHeader->owChecksum = 0;
- owHeader->owChecksum = ~generateOWChecksum(buffer);
-
- bcopy(buffer, _ofImage, _ofPartitionSize);
+ tmpBuffer += length;
+ maxLength -= length;
}
-
- IODelete(buffer, UInt8, _ofPartitionSize);
-
- if (!ok) return kIOReturnBadArgument;
}
-
- _ofImageDirty = false;
- _nvramImageDirty = true;
-
- return kIOReturnSuccess;
+ iter->release();
+
+ if (ok) {
+ bcopy(buffer, _ofImage, _ofPartitionSize);
+ }
+
+ IODelete(buffer, UInt8, _ofPartitionSize);
+
+ if (!ok) return kIOReturnBadArgument;
+
+ if (_nvramController != 0) {
+ return _nvramController->write(0, _nvramImage, kIODTNVRAMImageSize);
+ }
+
+ return kIOReturnNotReady;
}
struct OFVariable {
- char *variableName;
- UInt32 variableType;
- UInt32 variablePerm;
- SInt32 variableOffset;
+ const char *variableName;
+ UInt32 variableType;
+ UInt32 variablePerm;
+ SInt32 variableOffset;
};
typedef struct OFVariable OFVariable;
kOWVariableOffsetString = 17
};
+static const
OFVariable gOFVariables[] = {
{"little-endian?", kOFVariableTypeBoolean, kOFVariablePermUserRead, 0},
{"real-mode?", kOFVariableTypeBoolean, kOFVariablePermUserRead, 1},
{"aapl,pci", kOFVariableTypeData, kOFVariablePermRootOnly, -1},
{"security-mode", kOFVariableTypeString, kOFVariablePermUserRead, -1},
{"security-password", kOFVariableTypeData, kOFVariablePermRootOnly, -1},
+ {"boot-image", kOFVariableTypeData, kOFVariablePermUserWrite, -1},
+ {"com.apple.System.fp-state", kOFVariableTypeData, kOFVariablePermKernelOnly, -1},
+#if CONFIG_EMBEDDED
+ {"backlight-level", kOFVariableTypeData, kOFVariablePermUserWrite, -1},
+ {"com.apple.System.sep.art", kOFVariableTypeData, kOFVariablePermKernelOnly, -1},
+ {"com.apple.System.boot-nonce", kOFVariableTypeString, kOFVariablePermKernelOnly, -1},
+ {"darkboot", kOFVariableTypeBoolean, kOFVariablePermUserWrite, -1},
+ {"acc-mb-ld-lifetime", kOFVariableTypeNumber, kOFVariablePermKernelOnly, -1},
+ {"acc-cm-override-charger-count", kOFVariableTypeNumber, kOFVariablePermKernelOnly, -1},
+ {"acc-cm-override-count", kOFVariableTypeNumber, kOFVariablePermKernelOnly, -1},
+ {"enter-tdm-mode", kOFVariableTypeBoolean, kOFVariablePermUserWrite, -1},
+#endif
{0, kOFVariableTypeData, kOFVariablePermUserRead, -1}
};
UInt32 IODTNVRAM::getOFVariableType(const OSSymbol *propSymbol) const
{
- OFVariable *ofVar;
+ const OFVariable *ofVar;
ofVar = gOFVariables;
while (1) {
UInt32 IODTNVRAM::getOFVariablePerm(const OSSymbol *propSymbol) const
{
- OFVariable *ofVar;
+ const OFVariable *ofVar;
ofVar = gOFVariables;
while (1) {
bool IODTNVRAM::getOWVariableInfo(UInt32 variableNumber, const OSSymbol **propSymbol,
UInt32 *propType, UInt32 *propOffset)
{
- OFVariable *ofVar;
+ const OFVariable *ofVar;
ofVar = gOFVariables;
while (1) {
bool IODTNVRAM::convertObjectToProp(UInt8 *buffer, UInt32 *length,
const OSSymbol *propSymbol, OSObject *propObject)
{
- UInt8 *propName;
- UInt32 propNameLength, propDataLength;
+ const UInt8 *propName;
+ UInt32 propNameLength, propDataLength, remaining;
UInt32 propType, tmpValue;
OSBoolean *tmpBoolean = 0;
OSNumber *tmpNumber = 0;
OSString *tmpString = 0;
OSData *tmpData = 0;
- propName = (UInt8 *)propSymbol->getCStringNoCopy();
+ propName = (const UInt8 *)propSymbol->getCStringNoCopy();
propNameLength = propSymbol->getLength();
propType = getOFVariableType(propSymbol);
if ((propNameLength + propDataLength + 2) > *length) return false;
// Copy the property name equal sign.
- sprintf((char *)buffer, "%s=", propName);
- buffer += propNameLength + 1;
-
+ buffer += snprintf((char *)buffer, *length, "%s=", propName);
+ remaining = *length - propNameLength - 1;
+
switch (propType) {
case kOFVariableTypeBoolean :
if (tmpBoolean->getValue()) {
- strcpy((char *)buffer, "true");
+ strlcpy((char *)buffer, "true", remaining);
} else {
- strcpy((char *)buffer, "false");
+ strlcpy((char *)buffer, "false", remaining);
}
break;
case kOFVariableTypeNumber :
tmpValue = tmpNumber->unsigned32BitValue();
if (tmpValue == 0xFFFFFFFF) {
- strcpy((char *)buffer, "-1");
+ strlcpy((char *)buffer, "-1", remaining);
} else if (tmpValue < 1000) {
- sprintf((char *)buffer, "%ld", tmpValue);
+ snprintf((char *)buffer, remaining, "%d", (uint32_t)tmpValue);
} else {
- sprintf((char *)buffer, "0x%lx", tmpValue);
+ snprintf((char *)buffer, remaining, "0x%x", (uint32_t)tmpValue);
}
break;
case kOFVariableTypeString :
- strcpy((char *)buffer, tmpString->getCStringNoCopy());
+ strlcpy((char *)buffer, tmpString->getCStringNoCopy(), remaining);
break;
case kOFVariableTypeData :
void IODTNVRAM::updateOWBootArgs(const OSSymbol *key, OSObject *value)
{
- bool wasBootArgs, bootr = false;
- UInt32 cnt;
- OSString *tmpString, *bootCommand, *bootArgs = 0;
- UInt8 *bootCommandData, *bootArgsData, *tmpData;
- UInt32 bootCommandDataLength, bootArgsDataLength, tmpDataLength;
+ bool wasBootArgs, bootr = false;
+ UInt32 cnt;
+ OSString *tmpString, *bootCommand, *bootArgs = 0;
+ const UInt8 *bootCommandData, *bootArgsData;
+ UInt8 *tmpData;
+ UInt32 bootCommandDataLength, bootArgsDataLength, tmpDataLength;
tmpString = OSDynamicCast(OSString, value);
if (tmpString == 0) return;
if (bootCommand == 0) return;
} else return;
- bootCommandData = (UInt8 *)bootCommand->getCStringNoCopy();
+ bootCommandData = (const UInt8 *)bootCommand->getCStringNoCopy();
bootCommandDataLength = bootCommand->getLength();
if (bootCommandData == 0) return;
}
if (wasBootArgs) {
- bootArgsData = (UInt8 *)bootArgs->getCStringNoCopy();
+ bootArgsData = (const UInt8 *)bootArgs->getCStringNoCopy();
bootArgsDataLength = bootArgs->getLength();
if (bootArgsData == 0) return;
tmpData = IONew(UInt8, tmpDataLength + 1);
if (tmpData == 0) return;
- strncpy((char *)tmpData, (const char *)bootCommandData, cnt);
- tmpData[cnt] = '\0';
- strcat((char *)tmpData, (const char *)bootArgsData);
+ cnt -= strlcpy((char *)tmpData, (const char *)bootCommandData, cnt);
+ strlcat((char *)tmpData, (const char *)bootArgsData, cnt);
bootCommand = OSString::withCString((const char *)tmpData);
if (bootCommand != 0) {
}
}
-
-// Private methods for Name Registry access.
-
-enum {
- kMaxNVNameLength = 4,
- kMaxNVDataLength = 8
-};
-
-#pragma options align=mac68k
-struct NVRAMProperty
-{
- IONVRAMDescriptor header;
- UInt8 nameLength;
- UInt8 name[ kMaxNVNameLength ];
- UInt8 dataLength;
- UInt8 data[ kMaxNVDataLength ];
-};
-#pragma options align=reset
-
bool IODTNVRAM::searchNVRAMProperty(IONVRAMDescriptor *hdr, UInt32 *where)
{
- UInt32 offset;
- SInt32 nvEnd;
-
- nvEnd = *((UInt16 *)_nrImage);
- if(getPlatform()->getBootROMType()) {
- // on NewWorld, offset to partition start
- nvEnd -= 0x100;
- } else {
- // on old world, absolute
- nvEnd -= _nrPartitionOffset;
- }
- if((nvEnd < 0) || (nvEnd >= kIODTNVRAMNameRegistrySize))
- nvEnd = 2;
-
- offset = 2;
- while ((offset + sizeof(NVRAMProperty)) <= (UInt32)nvEnd) {
- if (bcmp(_nrImage + offset, hdr, sizeof(*hdr)) == 0) {
- *where = offset;
- return true;
- }
- offset += sizeof(NVRAMProperty);
- }
-
- if ((nvEnd + sizeof(NVRAMProperty)) <= kIODTNVRAMNameRegistrySize)
- *where = nvEnd;
- else
- *where = 0;
-
return false;
}
const OSSymbol **name,
OSData **value)
{
- IONVRAMDescriptor hdr;
- NVRAMProperty *prop;
- IOByteCount length;
- UInt32 offset;
- IOReturn err;
- char nameBuf[kMaxNVNameLength + 1];
-
- if (_nrImage == 0) return kIOReturnUnsupported;
- if ((entry == 0) || (name == 0) || (value == 0)) return kIOReturnBadArgument;
-
- err = IODTMakeNVDescriptor(entry, &hdr);
- if (err != kIOReturnSuccess) return err;
-
- if (searchNVRAMProperty(&hdr, &offset)) {
- prop = (NVRAMProperty *)(_nrImage + offset);
-
- length = prop->nameLength;
- if (length > kMaxNVNameLength) length = kMaxNVNameLength;
- strncpy(nameBuf, (const char *)prop->name, length);
- nameBuf[length] = 0;
- *name = OSSymbol::withCString(nameBuf);
-
- length = prop->dataLength;
- if (length > kMaxNVDataLength) length = kMaxNVDataLength;
- *value = OSData::withBytes(prop->data, length);
-
- if ((*name != 0) && (*value != 0)) return kIOReturnSuccess;
- else return kIOReturnNoMemory;
- }
-
- return kIOReturnNoResources;
+ return kIOReturnUnsupported;
}
+
IOReturn IODTNVRAM::writeNVRAMPropertyType0(IORegistryEntry *entry,
const OSSymbol *name,
OSData *value)
{
- IONVRAMDescriptor hdr;
- NVRAMProperty *prop;
- IOByteCount nameLength;
- IOByteCount dataLength;
- UInt32 offset;
- IOReturn err;
- UInt16 nvLength;
- bool exists;
-
- if (_nrImage == 0) return kIOReturnUnsupported;
- if ((entry == 0) || (name == 0) || (value == 0)) return kIOReturnBadArgument;
-
- nameLength = name->getLength();
- dataLength = value->getLength();
- if (nameLength > kMaxNVNameLength) return kIOReturnNoSpace;
- if (dataLength > kMaxNVDataLength) return kIOReturnNoSpace;
-
- err = IODTMakeNVDescriptor(entry, &hdr);
- if (err != kIOReturnSuccess) return err;
-
- exists = searchNVRAMProperty(&hdr, &offset);
- if (offset == 0) return kIOReturnNoMemory;
-
- prop = (NVRAMProperty *)(_nrImage + offset);
- if (!exists) bcopy(&hdr, &prop->header, sizeof(hdr));
-
- prop->nameLength = nameLength;
- bcopy(name->getCStringNoCopy(), prop->name, nameLength);
- prop->dataLength = dataLength;
- bcopy(value->getBytesNoCopy(), prop->data, dataLength);
-
- if (!exists) {
- nvLength = offset + sizeof(NVRAMProperty);
- if (getPlatform()->getBootROMType())
- nvLength += 0x100;
- else
- nvLength += _nrPartitionOffset;
- *((UInt16 *)_nrImage) = nvLength;
- }
-
- _nvramImageDirty = true;
-
- return err;
+ return kIOReturnUnsupported;
}
-OSData *IODTNVRAM::unescapeBytesToData(UInt8 *bytes, UInt32 length)
+
+OSData *IODTNVRAM::unescapeBytesToData(const UInt8 *bytes, UInt32 length)
{
OSData *data = 0;
UInt32 totalLength = 0;
OSData * IODTNVRAM::escapeDataToData(OSData * value)
{
- OSData * result;
- UInt8 * start;
- UInt8 * end;
- UInt8 * where;
- UInt8 byte;
- bool ok = true;
+ OSData * result;
+ const UInt8 * startPtr;
+ const UInt8 * endPtr;
+ const UInt8 * wherePtr;
+ UInt8 byte;
+ bool ok = true;
- where = (UInt8 *) value->getBytesNoCopy();
- end = where + value->getLength();
+ wherePtr = (const UInt8 *) value->getBytesNoCopy();
+ endPtr = wherePtr + value->getLength();
- result = OSData::withCapacity(end - where);
+ result = OSData::withCapacity(endPtr - wherePtr);
if (!result)
return result;
- while (where < end) {
- start = where;
- byte = *where++;
+ while (wherePtr < endPtr) {
+ startPtr = wherePtr;
+ byte = *wherePtr++;
if ((byte == 0x00) || (byte == 0xFF)) {
for (;
- ((where - start) < 0x80) && (where < end) && (byte == *where);
- where++) {}
+ ((wherePtr - startPtr) < 0x80) && (wherePtr < endPtr) && (byte == *wherePtr);
+ wherePtr++) {}
ok &= result->appendByte(0xff, 1);
- byte = (byte & 0x80) | (where - start);
+ byte = (byte & 0x80) | (wherePtr - startPtr);
}
ok &= result->appendByte(byte, 1);
}
return result;
}
+static bool IsApplePropertyName(const char * propName)
+{
+ char c;
+ while ((c = *propName++)) {
+ if ((c >= 'A') && (c <= 'Z'))
+ break;
+ }
+
+ return (c == 0);
+}
+
IOReturn IODTNVRAM::readNVRAMPropertyType1(IORegistryEntry *entry,
const OSSymbol **name,
OSData **value)
{
- IOReturn err = kIOReturnNoResources;
- OSData *data;
- UInt8 *start;
- UInt8 *end;
- UInt8 *where;
- UInt8 *nvPath = 0;
- UInt8 *nvName = 0;
- UInt8 byte;
+ IOReturn err = kIOReturnNoResources;
+ OSData *data;
+ const UInt8 *startPtr;
+ const UInt8 *endPtr;
+ const UInt8 *wherePtr;
+ const UInt8 *nvPath = 0;
+ const char *nvName = 0;
+ const char *resultName = 0;
+ const UInt8 *resultValue = 0;
+ UInt32 resultValueLen = 0;
+ UInt8 byte;
if (_ofDict == 0) return err;
+
+ IOLockLock(_ofLock);
data = OSDynamicCast(OSData, _ofDict->getObject(_registryPropertiesKey));
+ IOLockUnlock(_ofLock);
+
if (data == 0) return err;
- start = (UInt8 *) data->getBytesNoCopy();
- end = start + data->getLength();
+ startPtr = (const UInt8 *) data->getBytesNoCopy();
+ endPtr = startPtr + data->getLength();
- where = start;
- while (where < end) {
- byte = *(where++);
+ wherePtr = startPtr;
+ while (wherePtr < endPtr) {
+ byte = *(wherePtr++);
if (byte)
continue;
if (nvPath == 0)
- nvPath = start;
+ nvPath = startPtr;
else if (nvName == 0)
- nvName = start;
- else if (entry ==
- IORegistryEntry::fromPath((const char *) nvPath, gIODTPlane)) {
- *name = OSSymbol::withCString((const char *) nvName);
- *value = unescapeBytesToData(start, where - start - 1);
- if ((*name != 0) && (*value != 0))
- err = kIOReturnSuccess;
- else
- err = kIOReturnNoMemory;
- break;
- } else
- nvPath = nvName = 0;
-
- start = where;
+ nvName = (const char *) startPtr;
+ else {
+ IORegistryEntry * compareEntry = IORegistryEntry::fromPath((const char *) nvPath, gIODTPlane);
+ if (compareEntry)
+ compareEntry->release();
+ if (entry == compareEntry) {
+ bool appleProp = IsApplePropertyName(nvName);
+ if (!appleProp || !resultName) {
+ resultName = nvName;
+ resultValue = startPtr;
+ resultValueLen = wherePtr - startPtr - 1;
+ }
+ if (!appleProp)
+ break;
+ }
+ nvPath = 0;
+ nvName = 0;
+ }
+ startPtr = wherePtr;
+ }
+ if (resultName) {
+ *name = OSSymbol::withCString(resultName);
+ *value = unescapeBytesToData(resultValue, resultValueLen);
+ if ((*name != 0) && (*value != 0))
+ err = kIOReturnSuccess;
+ else
+ err = kIOReturnNoMemory;
}
-
return err;
}
const OSSymbol *propName,
OSData *value)
{
- OSData *oldData;
- OSData *data = 0;
- UInt8 *start;
- UInt8 *propStart;
- UInt8 *end;
- UInt8 *where;
- UInt8 *nvPath = 0;
- UInt8 *nvName = 0;
+ OSData *oldData, *escapedData;
+ OSData *data = 0;
+ const UInt8 *startPtr;
+ const UInt8 *propStart;
+ const UInt8 *endPtr;
+ const UInt8 *wherePtr;
+ const UInt8 *nvPath = 0;
+ const char *nvName = 0;
const char * comp;
const char * name;
- UInt8 byte;
- bool ok = true;
+ UInt8 byte;
+ bool ok = true;
+ bool settingAppleProp;
if (_ofDict == 0) return kIOReturnNoResources;
+ settingAppleProp = IsApplePropertyName(propName->getCStringNoCopy());
+
// copy over existing properties for other entries
+ IOLockLock(_ofLock);
+
oldData = OSDynamicCast(OSData, _ofDict->getObject(_registryPropertiesKey));
if (oldData) {
- start = (UInt8 *) oldData->getBytesNoCopy();
- end = start + oldData->getLength();
-
- propStart = start;
- where = start;
- while (where < end) {
- byte = *(where++);
+
+ startPtr = (const UInt8 *) oldData->getBytesNoCopy();
+ endPtr = startPtr + oldData->getLength();
+
+ propStart = startPtr;
+ wherePtr = startPtr;
+ while (wherePtr < endPtr) {
+ byte = *(wherePtr++);
if (byte)
continue;
if (nvPath == 0)
- nvPath = start;
+ nvPath = startPtr;
else if (nvName == 0)
- nvName = start;
- else if (entry ==
- IORegistryEntry::fromPath((const char *) nvPath, gIODTPlane)) {
- // delete old property (nvPath -> where)
- data = OSData::withBytes(propStart, nvPath - propStart);
- if (data)
- ok &= data->appendBytes(where, end - where);
- break;
- } else
- nvPath = nvName = 0;
-
- start = where;
+ nvName = (const char *) startPtr;
+ else {
+ IORegistryEntry * compareEntry = IORegistryEntry::fromPath((const char *) nvPath, gIODTPlane);
+ if (compareEntry)
+ compareEntry->release();
+ if (entry == compareEntry) {
+ if ((settingAppleProp && propName->isEqualTo(nvName))
+ || (!settingAppleProp && !IsApplePropertyName(nvName))) {
+ // delete old property (nvPath -> wherePtr)
+ data = OSData::withBytes(propStart, nvPath - propStart);
+ if (data)
+ ok &= data->appendBytes(wherePtr, endPtr - wherePtr);
+ break;
+ }
+ }
+ nvPath = 0;
+ nvName = 0;
+ }
+
+ startPtr = wherePtr;
}
}
data = OSData::withData(oldData);
else
data = OSData::withCapacity(16);
- if (!data)
- return kIOReturnNoMemory;
+ if (!data) ok = false;
}
- // get entries in path
- OSArray *array = OSArray::withCapacity(5);
- if (!array) {
- data->release();
- return kIOReturnNoMemory;
- }
- do
- array->setObject(entry);
- while ((entry = entry->getParentEntry(gIODTPlane)));
-
- // append path
- for (int i = array->getCount() - 3;
- (entry = (IORegistryEntry *) array->getObject(i));
- i--) {
-
- name = entry->getName(gIODTPlane);
- comp = entry->getLocation(gIODTPlane);
- if( comp && (0 == strcmp("pci", name))
- && (0 == strcmp("80000000", comp))) {
- // yosemite hack
- comp = "/pci@80000000";
- } else {
- if (comp)
- ok &= data->appendBytes("/@", 2);
+ if (ok && value && value->getLength()) do {
+ // get entries in path
+ OSArray *array = OSArray::withCapacity(5);
+ if (!array) {
+ ok = false;
+ break;
+ }
+ do
+ array->setObject(entry);
+ while ((entry = entry->getParentEntry(gIODTPlane)));
+
+ // append path
+ for (int i = array->getCount() - 3;
+ (entry = (IORegistryEntry *) array->getObject(i));
+ i--) {
+
+ name = entry->getName(gIODTPlane);
+ comp = entry->getLocation(gIODTPlane);
+ if (comp) ok &= data->appendBytes("/@", 2);
else {
- if (!name)
- continue;
- ok &= data->appendByte('/', 1);
- comp = name;
+ if (!name) continue;
+ ok &= data->appendByte('/', 1);
+ comp = name;
}
+ ok &= data->appendBytes(comp, strlen(comp));
}
- ok &= data->appendBytes(comp, strlen(comp));
- }
- ok &= data->appendByte(0, 1);
- array->release();
+ ok &= data->appendByte(0, 1);
+ array->release();
- // append prop name
- ok &= data->appendBytes(propName->getCStringNoCopy(), propName->getLength() + 1);
-
- // append escaped data
- oldData = escapeDataToData(value);
- ok &= (oldData != 0);
- if (ok)
- ok &= data->appendBytes(oldData);
+ // append prop name
+ ok &= data->appendBytes(propName->getCStringNoCopy(), propName->getLength() + 1);
+
+ // append escaped data
+ escapedData = escapeDataToData(value);
+ ok &= (escapedData != 0);
+ if (ok) ok &= data->appendBytes(escapedData);
+
+ } while (false);
+ oldData->retain();
if (ok) {
ok = _ofDict->setObject(_registryPropertiesKey, data);
- if (ok)
- _ofImageDirty = true;
}
- data->release();
+
+ if (data) data->release();
+
+ if (ok) {
+ if (syncVariables() != kIOReturnSuccess) {
+ if (oldData) {
+ _ofDict->setObject(_registryPropertiesKey, oldData);
+ }
+ else {
+ _ofDict->removeObject(_registryPropertiesKey);
+ }
+ (void) syncVariables();
+ ok = false;
+ }
+ }
+
+ if (oldData) {
+ oldData->release();
+ }
+
+ IOLockUnlock(_ofLock);
return ok ? kIOReturnSuccess : kIOReturnNoMemory;
}
+
+bool IODTNVRAM::safeToSync(void)
+{
+ AbsoluteTime delta;
+ UInt64 delta_ns;
+ SInt32 delta_secs;
+
+ // delta interval went by
+ clock_get_uptime(&delta);
+
+ // Figure it in seconds.
+ absolutetime_to_nanoseconds(delta, &delta_ns);
+ delta_secs = (SInt32)(delta_ns / NSEC_PER_SEC);
+
+ if ((delta_secs > (_lastDeviceSync + MIN_SYNC_NOW_INTERVAL)) || _freshInterval)
+ {
+ _lastDeviceSync = delta_secs;
+ _freshInterval = FALSE;
+ return TRUE;
+ }
+
+ return FALSE;
+}
projects / apple / xnu.git / blobdiff