From b4fedf5315ecad1e0c54052f3e927ab43803a2fa Mon Sep 17 00:00:00 2001
From: "William A. Kennington III" <william@wkennington.com>
Date: Wed, 25 Mar 2015 12:03:30 -0700
Subject: [PATCH] nixos/intel-microcode: Support early initrd ucode loading

---
 nixos/modules/hardware/cpu/intel-microcode.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/nixos/modules/hardware/cpu/intel-microcode.nix b/nixos/modules/hardware/cpu/intel-microcode.nix
index 800c391b293..89ae4f45806 100644
--- a/nixos/modules/hardware/cpu/intel-microcode.nix
+++ b/nixos/modules/hardware/cpu/intel-microcode.nix
@@ -22,8 +22,7 @@ with lib;
   ###### implementation
 
   config = mkIf config.hardware.cpu.intel.updateMicrocode {
-    hardware.firmware = [ "${pkgs.microcodeIntel}/lib/firmware" ];
-    boot.kernelModules = [ "microcode" ];
+    boot.initrd.prepend = [ "${pkgs.microcodeIntel}/intel-ucode.img" ];
   };
 
 }