nixos/profiles/hardware/apu2e4.nix

   1 { pkgs, lib, config, host, ... }:
   2 {
   3 hardware.cpu.amd.updateMicrocode = true;
   4 nix = {
   5   # Too CPU hungry for the APU2, for too little Mio saved
   6   autoOptimiseStore = false;
   7   maxJobs = host.CPUs / 2;
   8 };
   9 powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
  10
  11 # https://insanity.industries/post/sata-power-consumption/
  12 services.udev.extraRules = ''
  13   SUBSYSTEM=="scsi_host", KERNEL=="host*", ATTR{link_power_management_policy}="med_power_with_dipm"
  14 '';
  15
  16 boot.loader = {
  17   grub = {
  18     enable = true;
  19     version = 2;
  20     copyKernels = true;
  21     configurationLimit = 1;
  22     # efiSupport = true;
  23     # In case canTouchEfiVariables doesn't work
  24     #efiInstallAsRemovable = true;
  25     devices = [
  26       # Completed in the importing configuration
  27     ];
  28     /*
  29     mirroredBoots = [
  30       { devices = [ "${disk_id}" ];
  31         path    = "/boot${bootnum}";
  32       }
  33     ];
  34     */
  35   };
  36   /*
  37   efi = {
  38     canTouchEfiVariables = true;
  39     efiSysMountPoint = "/boot/efi";
  40   };
  41   */
  42 };
  43
  44 boot.initrd = {
  45   availableKernelModules = [
  46     "ahci"
  47     "ehci_pci"
  48     "sd_mod"
  49     "sg"
  50     "uas"
  51     # Ethernet driver
  52     "igb"
  53     # Make the AES modules available at initrd,
  54     # to speedup the deciphering of the root.
  55     #"aes_x86_64"
  56     "aesni_intel"
  57     "cryptd"
  58   ];
  59   kernelModules = [
  60     "igb"
  61   ];
  62 };
  63
  64 boot.kernelParams = [
  65   "gfxpayload=text"
  66   #"console=tty0"
  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.pciutils
  74   pkgs.flashrom
  75 ];
  76 }