From b72c683304795967bb040e8888cebb080509df5a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Domen=20Ko=C5=BEar?= <domen@dev.si>
Date: Tue, 11 May 2021 09:32:03 +0200
Subject: [PATCH] Add Rpi4

---
 README.md                  |  1 +
 flake.nix                  |  1 +
 raspberry-pi/4/default.nix | 30 ++++++++++++++++++++++++++++++
 3 files changed, 32 insertions(+)
 create mode 100644 raspberry-pi/4/default.nix

diff --git a/README.md b/README.md
index 2dab83c..35c4ef2 100644
--- a/README.md
+++ b/README.md
@@ -137,6 +137,7 @@ See code for all available configurations.
 | [MSI GS60 2QE][]                  | `<nixos-hardware/msi/gs60>`                        |
 | PC Engines APU                    | `<nixos-hardware/pcengines/apu>`                   |
 | [Raspberry Pi 2][]                | `<nixos-hardware/raspberry-pi/2>`                  |
+| [Raspberry Pi 4][]                | `<nixos-hardware/raspberry-pi/4>`                  |
 | [Samsung Series 9 NP900X3C][]     | `<nixos-hardware/samsung/np900x3c>`                |
 | [Purism Librem 13v3][]            | `<nixos-hardware/purism/librem/13v3>`              |
 | [Purism Librem 15v3][]            | `<nixos-hardware/purism/librem/15v3>`              |
diff --git a/flake.nix b/flake.nix
index 570f0d2..0a16ed1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -73,6 +73,7 @@
       microsoft-surface-pro-3 = import ./microsoft/surface-pro/3;
       pcengines-apu = import ./pcengines/apu;
       raspberry-pi-2 = import ./raspberry-pi/2;
+      raspberry-pi-4 = import ./raspberry-pi/4;
       samsung-np900x3c = import ./samsung/np900x3c;
       system76 = import ./system76;
       system76-darp6 = import ./system76/darp6;
diff --git a/raspberry-pi/4/default.nix b/raspberry-pi/4/default.nix
new file mode 100644
index 0000000..b43e988
--- /dev/null
+++ b/raspberry-pi/4/default.nix
@@ -0,0 +1,30 @@
+{ lib, pkgs, ...}:
+
+{
+  boot = {
+    kernelPackages = lib.mkDefault pkgs.linuxPackages_rpi4;
+    initrd.availableKernelModules = [ "usbhid" "usb_storage" "vc4" ];
+
+    # Needed for 4K displays
+    kernelParams = [ "cma=128M" ];
+
+    loader = {
+      raspberryPi = {
+        enable = true;
+        version = 4;
+        firmwareConfig = ''
+          dtparam=audio=on 
+          gpu_mem=192
+        '';
+      };
+      grub.enable = false;
+      generic-extlinux-compatible.enable = true;
+    };
+  };
+
+  nix.buildCores = 4;
+
+  # Required for the Wireless firmware
+  hardware.enableRedistributableFirmware = true;
+
+}
\ No newline at end of file