Refactor Mox support

3 files changed, 88 insertions, 65 deletions

diff --git a/nixos/default.nix b/nixos/default.nix
index 8b20e39..e7c8f00 100644
--- a/nixos/default.nix
+++ b/nixos/default.nix
@@ -1,3 +1,4 @@
 {
   turris-board = import ./modules/turris-board.nix;
+  turris-defaults = import ./modules/turris-defaults.nix;
 }
diff --git a/nixos/modules/turris-board.nix b/nixos/modules/turris-board.nix
index 4b8aa0d..02b6dae 100644
--- a/nixos/modules/turris-board.nix
+++ b/nixos/modules/turris-board.nix
@@ -9,12 +9,6 @@ with lib;
       type = types.enum [ "omnia" "mox" ];
       description = "The unique Turris board identifier.";
     };
-
-    turris.device = mkOption {
-      type = types.str;
-      example = "/dev/mmcblk0";
-      description = "The device used to boot the Turris system.";
-    };
   };
 
   config = {
@@ -23,73 +17,17 @@ with lib;
       message = "Turris board has to be specified";
     }];
 
-    # 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 = 100;
-    };
-    # Nix is really memory hungry so we have to sometimes also use swap device.
-    # We expect that to be the second partition on the root device.
-    swapDevices = [{
-      device = config.turris.device + "p2";
-      priority = 0;
-    }];
-
-    fileSystems = {
-      # Root filesystem is expected to be on:
-      # Mox: SD card
-      # Omnia: internam MMC storage
-      "/" = {
-        device = config.turris.device + "p1";
-        fsType = "btrfs";
-      };
-    };
-
-    # The default hostname
-    # TODO set this only if not already set
-    networking.hostName = "nixturris";
-
     # Enable flakes for nix as we are using that instead of legacy setup
     nix = {
       package = pkgs.nixFlakes;
       extraOptions = "experimental-features = nix-command flakes";
     };
 
-    # Allow root access over SSH
-    # TODO allow disable as it is nice only for initial setup
-    services.openssh = {
-      enable = true;
-      passwordAuthentication = true;
-      permitRootLogin = "yes";
-    };
-
-    # Set default editor
-    # TODO probably switch to nano later on
-    programs.vim.defaultEditor = true;
-
-    # The additional administration packages
     environment.systemPackages =  with pkgs; [
+      # As we override the nix package we have to override nixos-rebuild as well
       (pkgs.nixos-rebuild.override { nix = config.nix.package.out; })
-      git # This is required to access the repository
-      htop
+      # The Git is required to access this repository
+      git
     ];
-
-    # No need for installer tools in standard system
-    system.disableInstallerTools = true;
   };
 }
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;
+  };
+}