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       version = 2;
  25       copyKernels = true;
  26       configurationLimit = mkDefault 1;
  27       # efiSupport = true;
  28       # In case canTouchEfiVariables doesn't work
  29       #efiInstallAsRemovable = true;
  30       devices = [
  31         # Completed in the importing configuration
  32       ];
  33       /*
  34         mirroredBoots = [
  35       { devices = [ "${disk_id}" ];
  36         path    = "/boot${bootnum}";
  37       }
  38         ];
  39       */
  40     };
  41     /*
  42       efi = {
  43       canTouchEfiVariables = true;
  44       efiSysMountPoint = "/boot/efi";
  45       };
  46     */
  47   };
  48
  49   boot.initrd = {
  50     availableKernelModules = [
  51       "ahci"
  52       "ehci_pci"
  53       "sd_mod"
  54       "sg"
  55       "uas"
  56     ];
  57     kernelModules = [
  58       # Ethernet driver
  59       "igb"
  60       # Enable to switch to stage-2 from the SD card
  61       "sdhci_pci"
  62     ];
  63   };
  64
  65   boot.consoleLogLevel = mkDefault 7;
  66   boot.kernelParams = [
  67     "gfxpayload=text"
  68     "console=ttyS0,115200n8"
  69     # Use arc_summary to print stats
  70     #"zfs.zfs_arc_max=${toString (500 * 1024 * 1024)}" # bytes
  71   ];
  72
  73   environment.systemPackages = [
  74     pkgs.flashrom
  75     pkgs.pciutils
  76   ];
  77 }