nixos/profiles/hardware/apu2e4.nix

   1 { pkgs, lib, config, ... }:
   2 {
   3
   4   nixpkgs.hostPlatform = {
   5     system = "x86_64-linux";
   6     config = "x86_64-unknown-linux-gnu";
   7   };
   8   _module.args.CPUs = 4;
   9   hardware.cpu.amd.updateMicrocode = true;
  10
  11   # Too CPU hungry for this hardware, for too little Mio saved
  12   nix.settings.auto-optimise-store = false;
  13
  14   powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
  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 = 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       # Ethernet driver
  56       "igb"
  57       # Make the AES modules available at initrd,
  58       # to speedup the deciphering of the root.
  59       #"aes_x86_64"
  60       "aesni_intel"
  61       "cryptd"
  62     ];
  63     kernelModules = [
  64       "igb"
  65       # Enable boot from SD card
  66       "sdhci_pci"
  67     ];
  68   };
  69
  70   boot.kernelParams = [
  71     "gfxpayload=text"
  72     #"console=tty0"
  73     "console=ttyS0,115200n8"
  74     # Avoids huge slow downs, especially with postgresql.
  75     "zfs.zfs_arc_max=${toString (1024 * 1024 * 1024)}" # bytes
  76   ];
  77
  78   environment.systemPackages = [
  79     pkgs.pciutils
  80     pkgs.flashrom
  81   ];
  82 }