# Configuration common to all Raspberry Pi 3 Model B devices

{ config, pkgs, lib, ... }:

{

  boot.initrd.availableKernelModules = [ "usbhid" "usb_storage" ];
  # NixOS wants to enable GRUB by default.
  boot.loader.grub.enable = false;
  # Enables the generation of /boot/extlinux/extlinux.conf
  boot.loader.generic-extlinux-compatible.enable = true;

  # For a Raspberry Pi 2 or 3):
  boot.kernelPackages = pkgs.linuxPackages_latest;

  # !!! Needed for the virtual console to work on the RPi 3, as the default of 16M doesn't seem to be enough.
  # If X.org behaves weirdly (I only saw the cursor) then try increasing this to 256M.
  boot.kernelParams = ["cma=32M"];

  # File systems configuration for using the installer's partition layout
  fileSystems = {
    "/" = {
      device = "/dev/disk/by-label/NIXOS_SD";
      fsType = "ext4";
    };
  };

  # !!! Adding a swap file is optional, but strongly recommended!
  swapDevices = [ { device = "/swapfile"; size = 1024; } ];

  hardware.enableRedistributableFirmware = true; # Enable support for Pi firmware blobs

}