chore(nix): refactor SGX configuration for nixtee1

- Removed SGX-specific settings including `aesmd_dcap`, `sgx_default_qcnl.conf`, and `security.tpm2` configurations.
- Updated `system.stateVersion` and switched kernel modules to `kvm-amd`.
- Adjusted disk UUIDs and removed unused `/boot` filesystem definition.

systems/x86_64-linux/nixtee1/default.nix

@@ -9,19 +9,12 @@ with lib.metacfg;
 {
   imports = [ ./hardware-configuration.nix ];
 
-  boot.kernel.sysctl."net.ipv4.conf.all.route_localnet" = 1;
   boot.kernelPackages = lib.mkOverride 0 pkgs.linuxPackages_latest;
 
-  networking.firewall.extraCommands = ''
-    iptables -t nat -A OUTPUT -o lo -p tcp --dport 8081 -j DNAT --to-destination 192.168.122.1:8081
-    iptables -t nat -A POSTROUTING -j MASQUERADE
-  '';
-
   metacfg = {
     base.enable = true;
     nix-ld.enable = true;
     nix.enable = true;
-    aesmd_dcap.enable = true;
     podman.enable = true;
     user.extraGroups = [
       "docker"
@@ -32,19 +25,6 @@ with lib.metacfg;
     };
   };
 
-  environment.etc."sgx_default_qcnl.conf".text = ''
-    {
-      "pccs_url": "https://192.168.122.1:8081/sgx/certification/v4/",
-      "use_secure_cert": false,
-      "collateral_service": "https://api.trustedservices.intel.com/sgx/certification/v4/",
-      "retry_times": 6,
-      "retry_delay": 10,
-      "pck_cache_expire_hours": 168,
-      "verify_collateral_cache_expire_hours": 168,
-      "local_cache_only": false
-    }
-  '';
-
   virtualisation = {
     docker.enable = true;
     podman.dockerCompat = false;
@@ -56,9 +36,6 @@ with lib.metacfg;
     allowReboot = true;
   };
 
-  security.tpm2.enable = false;
-  security.tpm2.abrmd.enable = false;
-
   networking.wireless.enable = false; # Enables wireless support via wpa_supplicant.
 
   networking.firewall.allowPing = true;
@@ -82,5 +59,5 @@ with lib.metacfg;
     }
   ];
 
-  system.stateVersion = "23.11";
+  system.stateVersion = "25.05";
 }

systems/x86_64-linux/nixtee1/hardware-configuration.nix

@@ -10,7 +10,9 @@
 }:
 
 {
-  imports = [ (modulesPath + "/profiles/qemu-guest.nix") ];
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
 
   boot.initrd.availableKernelModules = [
     "ahci"
@@ -20,19 +22,14 @@
     "virtio_blk"
   ];
   boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" ];
+  boot.kernelModules = [ "kvm-amd" ];
   boot.extraModulePackages = [ ];
 
   fileSystems."/" = {
-    device = "/dev/disk/by-uuid/ebb90474-ddcb-484b-9663-d71863827af4";
+    device = "/dev/disk/by-uuid/a5ea57a8-1254-4bc1-9a31-edde894670bc";
     fsType = "ext4";
   };
 
-  fileSystems."/boot" = {
-    device = "/dev/disk/by-uuid/941C-7B02";
-    fsType = "vfat";
-  };
-
   swapDevices = [ ];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking