uefi testing

modules/nixos/hardware/raspberry-pi/default.nix

@@ -66,6 +66,7 @@ let
     };
     firmware = pkgs.${namespace}.raspberrypifw;
   };
+
   ubootBuilder = import ./uboot-builder.nix {
     inherit pkgs;
     ubootPackage = (if (cfg.variant == "5") then pkgs.${namespace}.uboot-pi5 else pkgs.${namespace}.uboot-pi4);
@@ -73,6 +74,12 @@ let
     extlinuxConfBuilder = config.boot.loader.generic-extlinux-compatible.populateCmd;
   };
 
+  uefiBuilder = import ./uefi-builder.nix{
+    inherit pkgs;
+    uefiPackage = (if (cfg.variant == "5") then pkgs.${namespace}.uefi-rpi5 else pkgs.${namespace}.uefi-rpi4);
+    firmwareBuilder = firmwarePopulateCmd;
+  };
+
   # Builders exposed via populateCmd, which run on the build architecture
   populateFirmwareBuilder = import  ./firmware-builder.nix {
     pkgs = pkgs.buildPackages;
@@ -106,6 +113,7 @@ let
   builder = {
     # system.build.installBootLoader
     uboot = "${ubootBuilder} -f /boot/firmware -b /boot -c";
+    uefi = "${uefiBuilder} -f /boot/firmware -b /boot -c";
   };
 
   # firmware: caller must provide `-c <nixos configuration>` and  `-f <firmware target path>`
@@ -128,6 +136,14 @@ in
       ];
       description = "Raspberry Pi variant (4 or 5)";
     };
+
+    bootType = lib.mkOption {
+      type = lib.types.enum [
+        "uefi"
+        "uboot"
+      ];
+      default = "uboot";
+    };
     
     apply-overlays-dtmerge = {
       enable = lib.mkEnableOption "" // {
@@ -166,9 +182,10 @@ in
       ]);
       loader = {
         generic-extlinux-compatible = {
-          enable = lib.mkDefault true;
-          useGenerationDeviceTree = lib.mkOverride 60 true;
+          enable = lib.mkDefault (if cfg.bootType == "uefi" then false else true);
+          useGenerationDeviceTree = lib.mkOverride 60 (if cfg.bootType == "uefi" then false else true);
         };
+        systemd-boot.enable = (if cfg.bootType == "uefi" then true else false);
         grub.enable = lib.mkForce false;
       };
     };
@@ -259,10 +276,10 @@ in
     };
 
     system = {
-      build.installBootLoader = lib.mkOverride 60 (builder."uboot");
+      build.installBootLoader = lib.mkOverride 60 (if cfg.bootType == "uefi" then (builder."uefi") else (builder."uboot")); # todo 
       boot = {
         loader = {
-          id = lib.mkOverride 60 ("raspberrypi-uboot");
+          id = lib.mkOverride 60 (if cfg.bootType == "uefi" then "raspberrypi-uefi" else "raspberrypi-uboot"); # todo
           kernelFile = pkgs.stdenv.hostPlatform.linux-kernel.target;
         };
       };