1 files changed, 84 insertions, 0 deletions
diff --git a/nixos/modules/turris-defaults.nix b/nixos/modules/turris-defaults.nix
new file mode 100644
index 0000000..cdf5fbe
--- /dev/null
+++ b/nixos/modules/turris-defaults.nix
@@ -0,0 +1,84 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cnf = config.turris.defaults;
+
+in {
+
+  options = {
+    turris.defaults = {
+      enable = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Use default Turris configuration";
+      };
+      rootLabel = mkOption {
+        type = types.str;
+        default = "NixTurris";
+        description = "GPT partition label the root system is stored on";
+      };
+      swapLabel = mkOption {
+        type = types.str;
+        default = "NixTurrisSwap";
+        description = "GPT partition label for available swap parition";
+      };
+    };
+  };
+
+  config = mkIf cnf.enable {
+    # We do not need Grub as U-Boot supports boot using extlinux like file
+    boot.loader.grub.enable = false;
+    boot.loader.generic-extlinux-compatible.enable = true;
+    # Use early print to the serial console
+    boot.kernelParams = [
+      "earlyprintk" "console=ttyMV0,115200" "earlycon=ar3700_uart,0xd0012000"
+      "boot.shell_on_fail"
+    ];
+
+    # Use the latest kernel
+    boot.kernelPackages = pkgs.linuxPackages_latest;
+
+    # The supported deployment is on BTRFS
+    boot.supportedFilesystems = [ "btrfs" ];
+
+    # Cover nix memory consumption peaks by compressing the RAM
+    zramSwap = {
+      enable = true;
+      memoryPercent = 80;
+    };
+    # Nix is really memory hungry so we have to sometimes also use swap device.
+    swapDevices = [{
+      device = "/dev/disk/by-partlabel/" + cnf.swapLabel;
+      priority = 0;
+    }];
+
+    fileSystems = {
+      "/" = {
+        device = "/dev/disk/by-partlabel/" + cnf.rootLabel;
+        fsType = "btrfs";
+      };
+    };
+
+    # The default hostname
+    networking.hostName = mkDefault "nixturris";
+
+    # Set default editor
+    # TODO probably switch to nano later on
+    programs.vim.defaultEditor = mkDefault true;
+
+    # The additional administration packages
+    environment.systemPackages =  with pkgs; [
+      htop
+    ] ++ optionals (config.turris.board == "mox") [
+      libatsha204
+    ] ++ optionals (config.turris.board == "omnia") [
+      libatsha204
+    ];
+
+    # No need for installer tools in standard system
+    system.disableInstallerTools = true;
+  };
+}