replace clover with opencore

Author: Plopmenz

nix/os/boot.nix

@@ -91,90 +91,57 @@ in
             # Emulate UEFI on BIOS to allow UKI booting
             # https://github.com/NixOS/nixpkgs/issues/124132
             # https://wiki.archlinux.org/title/Clover#chainload_systemd-boot
-            (lib.optionalString (boot == "BIOS") ''
-              clover=${
-                let
-                  version = "5165";
-                in
-                pkgs.fetchzip {
-                  name = "clover-${version}";
-                  url = "https://github.com/CloverHackyColor/CloverBootloader/releases/download/${version}/CloverV2-${version}.zip";
-                  sha256 = "sha256-KbaSQMJWNkBwdFKbYALCTfw0XcL5Cnfb2uIDzLdiLI0=";
+            (
+              let
+                arch = lib.toUpper config.nixpkgs.hostPlatform.efiArch;
+              in
+              lib.optionalString (boot == "BIOS") ''
+                oc=${
+                  let
+                    version = "1.0.6";
+                  in
+                  pkgs.fetchzip {
+                    name = "open-core-${version}";
+                    url = "https://github.com/acidanthera/OpenCorePkg/releases/download/${version}/OpenCore-${version}-RELEASE.zip";
+                    sha256 = lib.fakeHash;
+                    stripRoot = false;
+                  }
                 }
-              }
-              boot0=$clover/BootSectors/boot0af
-              boot1=$clover/BootSectors/boot1f32
-              boot2=$clover/Bootloaders/x64/boot7
-              disks=(${
-                lib.concatStringsSep " " (map (disk: disk.device) (lib.attrValues config.disko.devices.disk))
-              })
-
-              for disk in "''${disks[@]}"; do
-                partition="1"
-                case "$disk" in
-                  *nvme*|*mmcblk*)
-                    part="''${disk}p''${partition}"
-                    ;;
-                  *)
-                    part="''${disk}''${partition}"
-                    ;;
-                esac
-
-                sgdisk --attributes="''${partition}:set:2" "$disk"
-
-                dd if="$boot0" of="$disk" bs=1 count=440 conv=notrunc
-
-                cp "$boot1" "$tmp/new_PBR"
-                dd if="$part" of="$tmp/original_PBR" bs=512 count=1 conv=notrunc
-                dd if="$tmp/original_PBR" of="$tmp/new_PBR" skip=3 seek=3 bs=1 count=87 conv=notrunc
-                dd if="$tmp/new_PBR" of="$part" bs=512 count=1 conv=notrunc
-                rm "$tmp/new_PBR" "$tmp/original_PBR"
-              done
-
-              cp $boot2 "$esp/boot"
-              mkdir -p "$esp/EFI"
-              cp -a "$clover/EFI/CLOVER" "$esp/EFI/CLOVER"
-              cat << EOF > "$esp/EFI/CLOVER/config.plist"
-              <?xml version="1.0" encoding="UTF-8"?>
-              <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "https://www.apple.com/DTDs/PropertyList-1.0.dtd">
-              <plist version="1.0">
-              <dict>
-                <key>Boot</key>
-                <dict>
-                  <key>DefaultVolume</key>
-                  <string>EFI</string>
-                  <key>DefaultLoader</key>
-                  <string>\EFI\BOOT\BOOT${lib.toUpper config.nixpkgs.hostPlatform.efiArch}.EFI</string>
-                  <key>Fast</key>
-                  <true/>
-                </dict>
-                <key>GUI</key>
-                <dict>
-                  <key>Custom</key>
-                  <dict>
-                    <key>Entries</key>
-                    <array>
-                      <dict>
-                        <key>Hidden</key>
-                        <false/>
-                        <key>Disabled</key>
-                        <false/>
-                        <key>Volume</key>
-                        <string>EFI</string>
-                        <key>Path</key>
-                        <string>\EFI\BOOT\BOOT${lib.toUpper config.nixpkgs.hostPlatform.efiArch}.EFI</string>
-                        <key>Title</key>
-                        <string>XnodeOS</string>
-                        <key>Type</key>
-                        <string>Linux</string>
-                      </dict>
-                    </array>
-                  </dict>
-                </dict>
-              </dict>
-              </plist>
-              EOF
-            '')
+                boot0=$oc/Utilities/LegacyBoot/boot0
+                boot1=$oc/Utilities/LegacyBoot/boot1f32
+                boot2=$oc/Utilities/LegacyBoot/boot${arch}
+                disks=(${
+                  lib.concatStringsSep " " (map (disk: disk.device) (lib.attrValues config.disko.devices.disk))
+                })
+
+                for disk in "''${disks[@]}"; do
+                  partition="1"
+                  case "$disk" in
+                    *nvme*|*mmcblk*)
+                      part="''${disk}p''${partition}"
+                      ;;
+                    *)
+                      part="''${disk}''${partition}"
+                      ;;
+                  esac
+
+                  sgdisk --attributes="''${partition}:set:2" "$disk"
+
+                  dd if="$boot0" of="$disk" bs=1 count=446 conv=notrunc
+
+                  cp "$boot1" "$tmp/new_PBR"
+                  dd if="$part" of="$tmp/original_PBR" count=1
+                  dd if="$tmp/original_PBR" of="$tmp/new_PBR" skip=3 seek=3 bs=1 count=87 conv=notrunc
+                  dd if=/dev/random of="$tmp/new_PBR" skip=496 seek=496 bs=1 count=14 conv=notrunc
+                  dd if="$tmp/new_PBR" of="$part"
+                  rm "$tmp/new_PBR" "$tmp/original_PBR"
+                done
+
+                cp $boot2 "$esp/boot"
+                mkdir -p "$esp/EFI"
+                cp -a "$oc/${arch}/EFI/OC" "$esp/EFI/OC"
+              ''
+            )
 
             # Update unattended disk decryption lock
             (lib.optionalString (tpm == "2") ''