build.py: Add ECM-Override

CHANGELOG.md

@@ -8,6 +8,8 @@
   - Drops Rosetta requirement on Apple Silicon Macs
   - Note building from source will require Python 3.11 or newer and up-to-date Python modules
 - Resolve dGPU support for MacBookPro14,3 in macOS Sonoma
+- Resolve USB ethernet support in macOS Sonoma
+  - For Ethernet dongles based on ECM protocol (ex. Realtek)
 - Increment Binaries:
   - OpenCorePkg 0.9.3 - release
   - Lilu 1.6.6 - release

payloads/Config/config.plist

@@ -1761,6 +1761,24 @@
 				<key>PlistPath</key>
 				<string>Contents/Info.plist</string>
 			</dict>
+			<dict>
+				<key>Arch</key>
+				<string>x86_64</string>
+				<key>Comment</key>
+				<string>USB Ethernet - ECM</string>
+				<key>Enabled</key>
+				<false/>
+				<key>MaxKernel</key>
+				<string></string>
+				<key>MinKernel</key>
+				<string>23.0.0</string>
+				<key>BundlePath</key>
+				<string>ECM-Override.kext</string>
+				<key>ExecutablePath</key>
+				<string></string>
+				<key>PlistPath</key>
+				<string>Contents/Info.plist</string>
+			</dict>
 		</array>
 		<key>Block</key>
 		<array>

resources/build/networking/wired.py

@@ -33,6 +33,20 @@ class BuildWiredNetworking:
         else:
             self._prebuilt_assumption()
 
+        # Always enable due to chance of hot-plugging
+        self._usb_ecm_dongles()
+
+
+    def _usb_ecm_dongles(self) -> None:
+        """
+        USB ECM Dongle Handling
+        """
+        # With Sonoma, our WiFi patches require downgrading IOSkywalk
+        # Unfortunately Apple's DriverKit stack uses IOSkywalk for ECM dongles, so we'll need force load
+        # the kernel driver to prevent a kernel panic
+        # - DriverKit: com.apple.DriverKit.AppleUserECM.dext
+        # - Kext: AppleUSBECM.kext
+        support.BuildSupport(self.model, self.constants, self.config).enable_kext("ECM-Override.kext", self.constants.ecm_override_version, self.constants.ecm_override_path)
 
     def _on_model(self) -> None:
         """

resources/constants.py

@@ -92,6 +92,7 @@ class Constants:
         self.mce_version:                    str = "1.0.0"  # AppleMCEReporterDisabler
         self.btspoof_version:                str = "1.0.0"  # Bluetooth-Spoof
         self.aspp_override_version:          str = "1.0.1"  # ACPI_SMC_PlatformPlugin Override
+        self.ecm_override_version:           str = "1.0.0"  # AppleUSBECM Override
         self.rsrhelper_version:              str = "1.0.0"  # RSRHelper
         self.amfipass_version:               str = "1.3.1"  # AMFIPass
         self.amfipass_compatibility_version: str = "1.2.1"  # Minimum AMFIPass version required
@@ -502,6 +503,10 @@ class Constants:
     def aspp_override_path(self):
         return self.payload_kexts_path / Path(f"Misc/ASPP-Override-v{self.aspp_override_version}.zip")
 
+    @property
+    def ecm_override_path(self):
+        return self.payload_kexts_path / Path(f"Misc/ECM-Override-v{self.ecm_override_version}.zip")
+
     @property
     def nvmefix_path(self):
         return self.payload_kexts_path / Path(f"Acidanthera/NVMeFix-v{self.nvmefix_version}-{self.kext_variant}.zip")