build.py: Add early MacPro6,1 support

CHANGELOG.md

@@ -9,6 +9,9 @@
   - Ensures old, incompatible kexts are not linked against
   - Old kexts are relocated to `/Library/Relocated Extensions`
 - Add OpenCore Picker timeout selection
+- Partially resolve MacPro6,1 support
+  - Allows for install and usage of 2013 Mac Pros on Ventura
+  - Currently CPU Power Management is not supported
 
 ## 0.5.0
 - Ventura Specific Updates:

gui/gui_main.py

@@ -1588,7 +1588,7 @@ class wx_python_gui:
         #   - VBIOS Boot Issue (MacPro6,1)
         #   - Non-Metal GPUs
         model = self.constants.custom_model or self.constants.computer.real_model
-        if model in model_array.LegacyGPU or model in ["MacPro3,1", "MacPro4,1", "MacPro5,1", "MacPro6,1"]:
+        if model in model_array.LegacyGPU or model in ["MacPro3,1", "MacPro4,1", "MacPro5,1"]:
             try:
                 app_major = app_dict['Version'].split(".")[0]
                 if float(app_major) > self.constants.os_support:

resources/build.py

@@ -882,6 +882,17 @@ class BuildOpenCore:
             print("- Enabling AHCI SSD patch")
             self.enable_kext("MonteAHCIPort.kext", self.constants.monterey_ahci_version, self.constants.monterey_ahci_path)
 
+        # Force VMM as a temporary solution to getting the MacPro6,1 booting in Ventura
+        # With macOS Ventura, Apple removed AppleIntelCPUPowerManagement.kext and assumed XCPM support across all Macs
+        # This change resulted in broken OS booting as the machine had no power management support
+        # Currently the AICPUPM fix is not fully functional, thus forcing VMM is a temporary solution
+        # Waiting for XNU source to be released to fix this properly
+        if self.model == "MacPro6,1":
+            print("- Enabling VMM patch")
+            self.config["Kernel"]["Emulate"]["Cpuid1Data"] = binascii.unhexlify("00000000000000000000008000000000")
+            self.config["Kernel"]["Emulate"]["Cpuid1Mask"] = binascii.unhexlify("00000000000000000000008000000000")
+            self.config["Kernel"]["Emulate"]["MinKernel"] =  "22.0.0"
+
         # Check if model has 5K display
         # Apple has 2 modes for display handling on 5K iMacs and iMac Pro
         # If at any point in the boot chain an "unsupported" entry is loaded, the firmware will tell the