UInt32 ACPIBacklightPanel::loadFromNVRAM(void)
{
DbgLog("%s::%s()\n", this->getName(),__FUNCTION__);
IORegistryEntry* nvram = IORegistryEntry::fromPath("/chosen/nvram", gIODTPlane);
if (!nvram)
{
DbgLog("%s: no /chosen/nvram, trying IODTNVRAM\n", this->getName());
// probably booting w/ Clover
if (OSDictionary* matching = serviceMatching("IODTNVRAM"))
{
nvram = waitForMatchingService(matching, 1000000000ULL * 15);
matching->release();
}
}
else DbgLog("%s: have nvram from /chosen/nvram\n", this->getName());
UInt32 val = -1;
if (nvram)
{
// need to serialize as getProperty on nvram does not work
if (OSSerialize* serial = OSSerialize::withCapacity(0))
{
nvram->serializeProperties(serial);
if (OSDictionary* props = OSDynamicCast(OSDictionary, OSUnserializeXML(serial->text())))
{
if (OSData* number = OSDynamicCast(OSData, props->getObject(kACPIBacklightLevel)))
{
val = 0;
unsigned l = number->getLength();
if (l <= sizeof(val))
memcpy(&val, number->getBytesNoCopy(), l);
DbgLog("%s: read level from nvram = %d\n", this->getName(), val);
//number->release();
}
else DbgLog("%s: no acpi-backlight-level in nvram\n", this->getName());
props->release();
}
serial->release();
}
nvram->release();
}
return val;
}
void
OWCDumpIORegistry::dumpIORegistry (void *argument)
{
IOSleep (DUMP_DELAY_SECONDS * 1000);
IORegistryIterator *iter = IORegistryIterator::iterateOver (gIOServicePlane, kIORegistryIterateRecursively);
if (iter == NULL) return;
int maxBufferSize = 2048;
char *buffer = (char *) IOMalloc (maxBufferSize);
if (buffer == NULL) return;
OSSerialize *s = OSSerialize::withCapacity (maxBufferSize);
if (s == NULL) return;
IORegistryEntry *object = iter->getCurrentEntry ();
while (object) {
s->clearText ();
int busyState = 0;
IOService *ios = OSDynamicCast (IOService, object);
if (ios) busyState = ios->getBusyState ();
int pathSize = maxBufferSize;
object->getPath (buffer, &pathSize, gIOServicePlane);
kprintf ("\n--> %s <%s> (%d, %d)\n", buffer, object->getMetaClass ()->getClassName (), object->getRetainCount (), busyState);
if (object->serializeProperties (s)) {
kprintf ("%s\n", s->text ());
} else {
kprintf ("serializeProperties failed\n");
}
object = iter->getNextObject ();
}
IOFree (buffer, maxBufferSize);
s->release ();
iter->release ();
}
UInt32 FakeSMCDevice::loadKeysFromNVRAM()
{
UInt32 count = 0;
// Find driver and load keys from NVRAM
// check for Chameleon NVRAM key first (because waiting for IODTNVRAM hangs)
IORegistryEntry* nvram = IORegistryEntry::fromPath("/chosen/nvram", gIODTPlane);
OSDictionary* matching = 0;
if (!nvram) {
// probably booting w/ Clover
matching = serviceMatching("IODTNVRAM");
nvram = OSDynamicCast(IODTNVRAM, waitForMatchingService(matching, 1000000000ULL * 15));
}
if (1) { //REVIEW: just to reduce diffs
if (nvram) {
useNVRAM = true;
if ((genericNVRAM = (0 == strncmp(nvram->getName(), "AppleNVRAM", sizeof("AppleNVRAM")))))
HWSensorsInfoLog("fallback to generic NVRAM methods");
OSSerialize *s = OSSerialize::withCapacity(0); // Workaround for IODTNVRAM->getPropertyTable returns IOKitPersonalities instead of NVRAM properties dictionary
if (nvram->serializeProperties(s)) {
if (OSDictionary *props = OSDynamicCast(OSDictionary, OSUnserializeXML(s->text()))) {
if (OSCollectionIterator *iterator = OSCollectionIterator::withCollection(props)) {
size_t prefix_length = strlen(kFakeSMCKeyPropertyPrefix);
char name[5]; name[4] = 0;
char type[5]; type[4] = 0;
while (OSString *property = OSDynamicCast(OSString, iterator->getNextObject())) {
const char *buffer = static_cast<const char *>(property->getCStringNoCopy());
if (property->getLength() >= prefix_length + 1 + 4 + 1 + 0 && 0 == strncmp(buffer, kFakeSMCKeyPropertyPrefix, prefix_length)) {
if (OSData *data = OSDynamicCast(OSData, props->getObject(property))) {
strncpy(name, buffer + prefix_length + 1, 4); // fakesmc-key-???? ->
strncpy(type, buffer + prefix_length + 1 + 4 + 1, 4); // fakesmc-key-xxxx-???? ->
if (addKeyWithValue(name, type, data->getLength(), data->getBytesNoCopy())) {
HWSensorsDebugLog("key %s of type %s loaded from NVRAM", name, type);
count++;
}
}
}
}
OSSafeRelease(iterator);
}
OSSafeRelease(props);
}
}
OSSafeRelease(s);
OSSafeRelease(nvram);
}
else {
HWSensorsWarningLog("NVRAM is unavailable");
}
OSSafeRelease(matching);
}
return count;
}