base/apu2e4.nix

   1 { pkgs, lib, config, ... }:
   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 = 4;
   8 };
   9 powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
  10
  11 boot.kernel = {
  12   sysctl = {
  13     "vm.swappiness" = 10;
  14     "vm.vfs_cache_pressure" = 50;
  15   };
  16 };
  17
  18 boot.loader = {
  19   grub = {
  20     enable = true;
  21     version = 2;
  22     copyKernels = true;
  23     configurationLimit = 3;
  24     # efiSupport = true;
  25     # In case canTouchEfiVariables doesn't work
  26     #efiInstallAsRemovable = true;
  27     devices = [
  28       # Completed in the importing configuration
  29     ];
  30     /*
  31     mirroredBoots = [
  32       { devices = [ "${disk_id}" ];
  33         path    = "/boot${bootnum}";
  34       }
  35     ];
  36     */
  37   };
  38   /*
  39   efi = {
  40     canTouchEfiVariables = true;
  41     efiSysMountPoint = "/boot/efi";
  42   };
  43   */
  44 };
  45
  46 boot.initrd = {
  47   availableKernelModules = [
  48     "ahci"
  49     "ehci_pci"
  50     "sd_mod"
  51     "sg"
  52     "uas"
  53     # Ethernet driver
  54     "igb"
  55     # Made the AES modules available at initrd,
  56     # to speedup the deciphering of the root.
  57     "aes_x86_64"
  58     "aesni_intel"
  59     "cryptd"
  60   ];
  61   kernelModules = [
  62     "igb"
  63   ];
  64 };
  65 boot.kernelModules = [];
  66 boot.extraModulePackages = [];
  67 boot.kernelParams = [
  68   "gfxpayload=text"
  69   #"console=tty0"
  70   "console=ttyS0,115200n8"
  71   # Use arc_summary to print stats
  72   "zfs.zfs_arc_max=${toString (500 * 1024 * 1024)}" # bytes
  73 ];
  74
  75 environment.systemPackages = [
  76   pkgs.pciutils
  77   pkgs.flashrom
  78 ];
  79 }