Add etzel configuration

hardware/apu1.nix

@@ -0,0 +1,30 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [ <nixpkgs/nixos/modules/installer/scan/not-detected.nix> ];
+
+  boot.loader.grub.extraConfig =
+    "\n    serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1\n    terminal_input serial\n    terminal_output serial\n  ";
+  boot.initrd.availableKernelModules = [
+    "ahci"
+    "ohci_pci"
+    "xhci_pci"
+    "ahci"
+    "ehci_pci"
+    "usbhid"
+    "usb_storage"
+    "sd_mod"
+    "sdhci_pci"
+  ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" "virtio" "tun" ];
+  boot.extraModulePackages = [ ];
+  boot.kernelParams = [ "console=ttyS0,115200n8" ];
+
+  hardware.cpu.amd.updateMicrocode = true;
+
+  nix.maxJobs = lib.mkDefault 2;
+}