nixos/profiles/hardware/apu6b4.nix

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