Add inital 5k Patchset

resources/build.py

@@ -726,6 +726,26 @@ class BuildOpenCore:
         except KeyError:
             pass
 
+        # Check if model has 5K display
+        # Apple has 2 modes for display handling on 5K iMacs and iMac Pro
+        # If at during any point in the boot chain an "unsupported" entry is booted, the firmware will tell the
+        # Display Controller to enter a 4K compatible mode that only uses a single DisplayPort 1.2 stream internally.
+        # This is to prevent situations where the system would boot into an enviroment that cannot handle the custom
+        # dual DisplayPort 1.2 streams the 5k Display uses
+
+        # To work around this issue, we trick the firmware into loading OpenCore through Apple's Hardware Diagnostic Tests
+        # Specifically hiding as diags_gui.efi under '/System/Library/CoreServices/.diagnostics/GUI/diags_gui.efi'
+
+        try:
+            smbios_data.smbios_dictionary[self.model]["5K Display"]
+            print("- Adding 5K Display Patch")
+            # Set LauncherPath to '/System/Library/CoreServices/boot.efi'
+            self.config["Misc"]["Boot"]["LauncherPath"] = "\\System\\Library\\CoreServices\\boot.efi"
+            # Set Diagnostics Flag
+            self.constants.force_diagnostics = True
+        except KeyError:
+            pass
+
         # ThirdPartDrives Check
         for drive in ["SATA 2.5", "SATA 3.5", "mSATA"]:
             if drive in smbios_data.smbios_dictionary[self.model]["Stock Storage"]:

resources/constants.py

@@ -125,12 +125,13 @@ class Constants:
         self.latebloom_debug = 0  #      Debug Setting
 
         ## Security Settings
-        self.apecid_support = False  # ApECID
-        self.amfi_status = True  #     Apple Mobile File Integrity
-        self.sip_status = True  #      System Integrity Protection
-        self.secure_status = False  #  Secure Boot Model
-        self.vault = False  #          EFI Vault
-        self.disable_cs_lv = False  #  Disable Library validation
+        self.apecid_support = False  #    ApECID
+        self.amfi_status = True  #        Apple Mobile File Integrity
+        self.sip_status = True  #         System Integrity Protection
+        self.secure_status = False  #     Secure Boot Model
+        self.vault = False  #             EFI Vault
+        self.disable_cs_lv = False  #     Disable Library validation
+        self.force_diagnostics = False  # Force diags.efi chainloading for 5k iMacs and iMac Pro
 
         ## OS Settings
         self.os_support = 12.0
@@ -215,6 +216,10 @@ class Constants:
     def xhci_driver_path(self):
         return self.payload_path / Path("Drivers/XhciDxe.efi")
 
+    @property
+    def diags_launcher_path(self):
+        return self.payload_path / Path("Drivers/diags.efi")
+
     # Kexts
     @property
     def payload_kexts_path(self):

resources/install.py

@@ -190,6 +190,20 @@ Please build OpenCore first!"""
             else:
                 print("- Adding Internal Drive icon")
                 shutil.copy(self.constants.icon_path_internal, mount_path)
+            
+            if self.constants.force_diagnostics is True:
+                # Chainload Diagnostics
+                # Required for 5k iMacs
+                print("- Adding 5K Display Patch")
+                Path(mount_path / Path("System/Library/CoreServices/.diagnostics/Drivers/HardwareDrivers")).mkdir(parents=True, exist_ok=True)
+                if self.constants.boot_efi is True:
+                    path_boot_efi = mount_path / Path("EFI/BOOT/BOOTx64.efi")
+                else:
+                    path_boot_efi = mount_path / Path("System/Library/CoreServices/boot.efi")
+                shutil.move(path_boot_efi, mount_path / Path("System/Library/CoreServices/.diagnostics/Drivers/HardwareDrivers/Product.efi"))
+                shutil.copy(self.constants.diags_launcher_path, mount_path / Path("System/Library/CoreServices"))
+                shutil.move(mount_path / Path("System/Library/CoreServices/diags.efi"), mount_path / Path("System/Library/CoreServices/boot.efi"))
+                
             print("- Cleaning install location")
             if not self.constants.recovery_status:
                 print("- Unmounting EFI partition")