Add Windows UEFI Audio support

Closes https://github.com/dortania/OpenCore-Legacy-Patcher/issues/133

CHANGELOG.md

@@ -6,6 +6,7 @@
 - Fix accidentally disabling non-existent iGPU in iMac11,2
 - Remove ACPI Patching requirement for Minimal SMBIOS setups
 - Probe hardware for Backlight pathing on iMac10,1, iMac11,x and iMac12,x with Metal GPUs
+- Add Windows UEFI Audio support to Sandy and Ivy Bridge Macs
 
 ## 0.1.1
 - Fix iMac11,3 GFX0 pathing

Resources/Build.py

@@ -243,10 +243,12 @@ class BuildOpenCore:
             self.get_item_by_kv(self.config["ACPI"]["Add"], "Path", "SSDT-CPBG.aml")["Enabled"] = True
             shutil.copy(self.constants.pci_ssdt_path, self.constants.acpi_path)
 
-        #if self.model in ModelArray.windows_audio:
-        #    print("- Adding SSDT-PCI.aml")
-        #    self.get_item_by_kv(self.config["ACPI"]["Add"], "Path", "SSDT-PCI.aml")["Enabled"] = True
-        #    shutil.copy(self.constants.windows_ssdt_path, self.constants.acpi_path)
+        if self.model in ModelArray.windows_audio:
+            # Based on: https://egpu.io/forums/pc-setup/fix-dsdt-override-to-correct-error-12/
+            print("- Enabling Windows 10 UEFI Audio support")
+            self.get_item_by_kv(self.config["ACPI"]["Add"], "Path", "SSDT-PCI.aml")["Enabled"] = True
+            self.get_item_by_kv(self.config["ACPI"]["Patch"], "Comment", "BUF0 to BUF1")["Enabled"] = True
+            shutil.copy(self.constants.windows_ssdt_path, self.constants.acpi_path)
 
         # USB Map
         usb_map_path = Path(self.constants.plist_folder_path) / Path("AppleUSBMaps/Info.plist")

Resources/Constants.py

@@ -113,6 +113,8 @@ class Constants:
     # ACPI
     @property
     def pci_ssdt_path(self): return self.payload_path / Path("ACPI/SSDT-CPBG.aml")
+    @property
+    def windows_ssdt_path(self): return self.payload_path / Path("ACPI/SSDT-PCI.aml")
 
     # Drivers
     @property

payloads/Config/config.plist

@@ -138,7 +138,7 @@
 				<key>Enabled</key>
 				<false/>
 				<key>Find</key>
-				<data>CEJVRjA=</data>
+				<data>QlVGMA==</data>
 				<key>Limit</key>
 				<integer>0</integer>
 				<key>Mask</key>
@@ -146,7 +146,7 @@
 				<key>OemTableId</key>
 				<data></data>
 				<key>Replace</key>
-				<data>CEJVRjE=</data>
+				<data>QlVGMQ==</data>
 				<key>ReplaceMask</key>
 				<data></data>
 				<key>Skip</key>