pyrox.dev
1# To build, use:
2# nix-build nixos -I nixos-config=nixos/modules/installer/cd-dvd/sd-image-raspberrypi.nix -A config.system.build.sdImage
3{ config, lib, pkgs, ... }:
4
5let
6 extlinux-conf-builder =
7 import ../../system/boot/loader/generic-extlinux-compatible/extlinux-conf-builder.nix {
8 inherit pkgs;
9 };
10in
11{
12 imports = [
13 ../../profiles/base.nix
14 ../../profiles/installation-device.nix
15 ./sd-image.nix
16 ];
17
18 assertions = lib.singleton {
19 assertion = pkgs.stdenv.hostPlatform.system == "armv6l-linux"
20 && pkgs.stdenv.hostPlatform.system == pkgs.stdenv.buildPlatform.system;
21 message = "sd-image-raspberrypi.nix can be only built natively on ARMv6; " +
22 "it cannot be cross compiled";
23 };
24
25 boot.loader.grub.enable = false;
26 boot.loader.generic-extlinux-compatible.enable = true;
27
28 boot.consoleLogLevel = lib.mkDefault 7;
29 boot.kernelPackages = pkgs.linuxPackages_rpi;
30
31 sdImage = {
32 populateBootCommands = let
33 configTxt = pkgs.writeText "config.txt" ''
34 # Prevent the firmware from smashing the framebuffer setup done by the mainline kernel
35 # when attempting to show low-voltage or overtemperature warnings.
36 avoid_warnings=1
37
38 [pi0]
39 kernel=u-boot-rpi0.bin
40
41 [pi1]
42 kernel=u-boot-rpi1.bin
43 '';
44 in ''
45 (cd ${pkgs.raspberrypifw}/share/raspberrypi/boot && cp bootcode.bin fixup*.dat start*.elf $NIX_BUILD_TOP/boot/)
46 cp ${pkgs.ubootRaspberryPiZero}/u-boot.bin boot/u-boot-rpi0.bin
47 cp ${pkgs.ubootRaspberryPi}/u-boot.bin boot/u-boot-rpi1.bin
48 cp ${configTxt} boot/config.txt
49 ${extlinux-conf-builder} -t 3 -c ${config.system.build.toplevel} -d ./boot
50 '';
51 };
52}