//
// get name
//
CHAR8 CONST* DevTreeGetName(DEVICE_TREE_NODE* theNode)
{
for(DEVICE_TREE_PROPERTY* theProperty = theNode->Properties; theProperty; theProperty = theProperty->Next)
{
if(!strcmp(theProperty->Name, CHAR8_CONST_STRING("name")))
return static_cast<CHAR8*>(theProperty->Value);
}
return CHAR8_CONST_STRING("(null)");
}
//
// initialize
//
EFI_STATUS DevTreeInitialize()
{
if(!DevTreeAddChild(nullptr, CHAR8_CONST_STRING("/")))
return EFI_OUT_OF_RESOURCES;
return EFI_SUCCESS;
}
//
// setup thunk code
//
VOID ArchSetupThunkCode0(UINT64 thunkOffset, MACH_O_LOADED_INFO* loadedInfo)
{
if(loadedInfo)
{
ArchpKernelIdlePML4 = MachFindSymbolVirtualAddressByName(loadedInfo, CHAR8_CONST_STRING("_IdlePML4")); //0x8c0ac8 + thunkOffset;
EfiRuntimeServices->SetVariable(CHAR16_STRING(L"IdlePML4"), &AppleNVRAMVariableGuid, EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS, sizeof(UINT64), &ArchpKernelIdlePML4);
}
else
{
UINTN dataSize = sizeof(UINT64);
EfiRuntimeServices->GetVariable(CHAR16_STRING(L"IdlePML4"), &AppleNVRAMVariableGuid, nullptr, &dataSize, &ArchpKernelIdlePML4);
}
}
//
// add child
//
DEVICE_TREE_NODE* DevTreeAddChild(DEVICE_TREE_NODE* parentNode, CHAR8 CONST* childName)
{
DEVICE_TREE_NODE* theNode = DevTreepGetNode();
if(!theNode)
return nullptr;
if(parentNode)
{
theNode->Next = parentNode->Children;
parentNode->Children = theNode;
}
else
{
DevTreepRootNode = theNode;
}
EFI_STATUS status = DevTreeAddProperty(theNode, CHAR8_CONST_STRING("name"), childName, static_cast<UINT32>(strlen(childName) + 1) * sizeof(CHAR8), TRUE);
if(!EFI_ERROR(status))
return theNode;
DevTreepFreeNode(theNode);
return nullptr;
}