nixos/profiles/hardware/apu6b4.nix

   1 { pkgs, lib, ... }:
   2 with lib;
   3 {
   4
   5   nixpkgs.hostPlatform = {
   6     system = "x86_64-linux";
   7     config = "x86_64-unknown-linux-gnu";
   8   };
   9   _module.args.CPUs = 4;
  10   hardware.cpu.amd.updateMicrocode = true;
  11   powerManagement.cpuFreqGovernor = mkDefault "ondemand";
  12
  13   # Too CPU hungry for this hardware, for too little Mio saved
  14   nix.settings.auto-optimise-store = false;
  15
  16   # https://insanity.industries/post/sata-power-consumption/
  17   services.udev.extraRules = ''
  18     SUBSYSTEM=="scsi_host", KERNEL=="host*", ATTR{link_power_management_policy}="med_power_with_dipm"
  19   '';
  20
  21   boot.loader = {
  22     grub = {
  23       enable = true;
  24       copyKernels = true;
  25       configurationLimit = mkDefault 1;
  26       # efiSupport = true;
  27       # In case canTouchEfiVariables doesn't work
  28       #efiInstallAsRemovable = true;
  29       devices = [
  30         # Completed in the importing configuration
  31       ];
  32       /*
  33         mirroredBoots = [
  34       { devices = [ "${disk_id}" ];
  35         path    = "/boot${bootnum}";
  36       }
  37         ];
  38       */
  39     };
  40     /*
  41       efi = {
  42       canTouchEfiVariables = true;
  43       efiSysMountPoint = "/boot/efi";
  44       };
  45     */
  46   };
  47
  48   boot.initrd = {
  49     availableKernelModules = [
  50       "ahci"
  51       "ehci_pci"
  52       "sd_mod"
  53       "sg"
  54       "uas"
  55     ];
  56     kernelModules = [
  57       # Ethernet driver
  58       "igb"
  59       # Enable to switch to stage-2 from the SD card
  60       "sdhci_pci"
  61     ];
  62   };
  63
  64   boot.consoleLogLevel = mkDefault 7;
  65   boot.kernelParams = [
  66     "gfxpayload=text"
  67     "console=ttyS0,115200n8"
  68     # Use arc_summary to print stats
  69     #"zfs.zfs_arc_max=${toString (500 * 1024 * 1024)}" # bytes
  70   ];
  71
  72   environment.systemPackages = [
  73     pkgs.flashrom
  74     pkgs.pciutils
  75   ];
  76 }