nix/module/AmdCpu.nix

{
  pkgs,
  lib,
  config,
  ...
}:
with lib;
let
  cfg = config.module.amd.cpu;

  controlFile = "/sys/devices/system/cpu/cpufreq/boost";
  enableCmd = "0";
  disableCmd = "1";
in
{
  options = {
    module.amd.cpu = {
      enable = mkEnableOption "Enable AMD Cpu support.";
      powersave = mkEnableOption "Enable AMD Cpu powersave.";
    };
  };

  config = mkIf cfg.enable (mkMerge [
    {
      boot.kernelModules = [ "kvm-amd" ];
      hardware.cpu.amd.updateMicrocode = mkDefault config.hardware.enableRedistributableFirmware;
    }
    (mkIf cfg.powersave {
      module.powersave = {
        enable = true;
        cpu.boost = {
          inherit controlFile enableCmd disableCmd;
        };
      };
    })
  ]);
}