Fix Power Management Support in macOS 12.3 Beta 1

Closes https://github.com/dortania/OpenCore-Legacy-Patcher/issues/930

CHANGELOG.md

@@ -14,6 +14,9 @@
 - Add Universal Control support for Monterey native Macs
   - Applicable for Haswell/Broadwell
   - Requires macOS 12.3 or newer
+- Fix Power Management Support in macOS 12.3 Beta 1
+  - Applicable for Sandy Bridge and older
+  - Enforces ACPI_SMC_PlatformPlugin matching
 
 ## 0.4.1
 - Add XHCI Boot Support to pre-UEFI 2.0 Macs

payloads/Config/config.plist

@@ -1149,6 +1149,24 @@
 				<key>PlistPath</key>
 				<string>Contents/Info.plist</string>
 			</dict>
+			<dict>
+				<key>Arch</key>
+				<string>x86_64</string>
+				<key>Comment</key>
+				<string>ACPI_SMC_PlatformPlugin Override</string>
+				<key>Enabled</key>
+				<false/>
+				<key>MaxKernel</key>
+				<string></string>
+				<key>MinKernel</key>
+				<string>21.4.0</string>
+				<key>BundlePath</key>
+				<string>ASPP-Override.kext</string>
+				<key>ExecutablePath</key>
+				<string></string>
+				<key>PlistPath</key>
+				<string>Contents/Info.plist</string>
+			</dict>
 		</array>
 		<key>Block</key>
 		<array/>

resources/build.py

@@ -177,6 +177,15 @@ class BuildOpenCore:
                     print(f"- Adding additional FeatureUnlock args: {self.constants.fu_arguments}")
                     self.config["NVRAM"]["Add"]["7C436110-AB2A-4BBB-A880-FE41995C9F82"]["boot-args"] += self.constants.fu_arguments
         
+        if smbios_data.smbios_dictionary[self.model]["CPU Generation"] <= cpu_data.cpu_data.sandy_bridge.value:
+            # With macOS 12.3 Beta 1, Apple dropped the 'plugin-type' check within X86PlatformPlugin
+            # Because of this, X86PP will match onto the CPU instead of ACPI_SMC_PlatformPlugin
+            # This causes power management to break on pre-Ivy Bridge CPUs as they don't have correct
+            # power management tables provided.
+            # This patch will simply increase ASPP's 'IOProbeScore' to outmatch X86PP
+            print("- Fixing ACPI SMC Power Management support")
+            self.enable_kext("ASPP-Override.kext", self.constants.aspp_override_version, self.constants.aspp_override_path)
+
         if self.model in ["MacBookPro6,1", "MacBookPro6,2", "MacBookPro9,1", "MacBookPro10,1"]:
             # Modded RestrictEvents with displaypolicyd blocked to fix dGPU switching
             self.enable_kext("RestrictEvents.kext", self.constants.restrictevents_mbp_version, self.constants.restrictevents_mbp_path)

resources/constants.py

@@ -68,6 +68,7 @@ class Constants:
         self.smcspoof_version = "1.0.0"  #           SMC-Spoof
         self.mce_version = "1.0.0"  #                AppleMCEReporterDisabler
         self.btspoof_version = "1.0.0"  #            Bluetooth-Spoof
+        self.aspp_override_version = "1.0.0"  #      ACPI_SMC_PlatformPlugin Override
 
         ## Syncretic
         ## https://forums.macrumors.com/members/syncretic.1173816/
@@ -340,6 +341,10 @@ class Constants:
     @property
     def btspoof_path(self):
         return self.payload_kexts_path / Path(f"Misc/Bluetooth-Spoof-v{self.btspoof_version}.zip")
+    
+    @property
+    def aspp_override_path(self):
+        return self.payload_kexts_path / Path(f"Misc/ASPP-Override-v{self.aspp_override_version}.zip")
 
     @property
     def nvmefix_path(self):