nixos/profiles/hardware/apu2e4.nix

   1 { pkgs, lib, config, ... }:
   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 = 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     # Ethernet driver
  51     "igb"
  52     # Make the AES modules available at initrd,
  53     # to speedup the deciphering of the root.
  54     #"aes_x86_64"
  55     "aesni_intel"
  56     "cryptd"
  57   ];
  58   kernelModules = [
  59     "igb"
  60     # Enable boot from SD card
  61     "sdhci_pci"
  62   ];
  63 };
  64
  65 boot.kernelParams = [
  66   "gfxpayload=text"
  67   #"console=tty0"
  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.pciutils
  75   pkgs.flashrom
  76 ];
  77 }