From ad65e807bd2870f64b3eb7137f1140a827732897 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Tue, 11 Sep 2012 18:44:37 +0200
Subject: [PATCH] Add new 'hardware.cpu.amd.updateMicrocode' option.

---
 modules/hardware/cpu/amd-microcode.nix | 29 ++++++++++++++++++++++++++
 modules/module-list.nix                |  1 +
 2 files changed, 30 insertions(+)
 create mode 100644 modules/hardware/cpu/amd-microcode.nix

diff --git a/modules/hardware/cpu/amd-microcode.nix b/modules/hardware/cpu/amd-microcode.nix
new file mode 100644
index 00000000000..2b224e04f2d
--- /dev/null
+++ b/modules/hardware/cpu/amd-microcode.nix
@@ -0,0 +1,29 @@
+{ config, pkgs, ... }:
+
+with pkgs.lib;
+
+{
+
+  ###### interface
+
+  options = {
+
+    hardware.cpu.amd.updateMicrocode = mkOption {
+      default = false;
+      type = types.bool;
+      description = ''
+        Update the CPU microcode for Amd processors.
+      '';
+    };
+
+  };
+
+
+  ###### implementation
+
+  config = mkIf config.hardware.cpu.amd.updateMicrocode {
+    hardware.firmware = [ pkgs.amdUcode ];
+    boot.kernelModules = [ "microcode" ];
+  };
+
+}
diff --git a/modules/module-list.nix b/modules/module-list.nix
index 08927d747ff..1d40a4145ae 100644
--- a/modules/module-list.nix
+++ b/modules/module-list.nix
@@ -16,6 +16,7 @@
   ./config/users-groups.nix
   ./hardware/all-firmware.nix
   ./hardware/cpu/intel-microcode.nix
+  ./hardware/cpu/amd-microcode.nix
   ./hardware/network/b43.nix
   ./hardware/network/intel-2100bg.nix
   ./hardware/network/intel-2200bg.nix