This once again allows sd-image.nix to imported standalone to build SD images of arbitrary NixOS systems.
		
			
				
	
	
		
			64 lines
		
	
	
		
			2.2 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			64 lines
		
	
	
		
			2.2 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
# To build, use:
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# nix-build nixos -I nixos-config=nixos/modules/installer/cd-dvd/sd-image-armv7l-multiplatform.nix -A config.system.build.sdImage
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{ config, lib, pkgs, ... }:
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let
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  extlinux-conf-builder =
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    import ../../system/boot/loader/generic-extlinux-compatible/extlinux-conf-builder.nix {
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      pkgs = pkgs.buildPackages;
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    };
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in
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{
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  imports = [
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    ../../profiles/base.nix
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    ../../profiles/installation-device.nix
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    ./sd-image.nix
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  ];
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  boot.loader.grub.enable = false;
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  boot.loader.generic-extlinux-compatible.enable = true;
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  boot.consoleLogLevel = lib.mkDefault 7;
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  boot.kernelPackages = pkgs.linuxPackages_latest;
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  # The serial ports listed here are:
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  # - ttyS0: for Tegra (Jetson TK1)
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  # - ttymxc0: for i.MX6 (Wandboard)
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  # - ttyAMA0: for Allwinner (pcDuino3 Nano) and QEMU's -machine virt
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  # - ttyO0: for OMAP (BeagleBone Black)
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  # - ttySAC2: for Exynos (ODROID-XU3)
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  boot.kernelParams = ["console=ttyS0,115200n8" "console=ttymxc0,115200n8" "console=ttyAMA0,115200n8" "console=ttyO0,115200n8" "console=ttySAC2,115200n8" "console=tty0"];
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  sdImage = {
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    populateFirmwareCommands = let
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      configTxt = pkgs.writeText "config.txt" ''
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        # Prevent the firmware from smashing the framebuffer setup done by the mainline kernel
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        # when attempting to show low-voltage or overtemperature warnings.
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        avoid_warnings=1
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        [pi2]
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        kernel=u-boot-rpi2.bin
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        [pi3]
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        kernel=u-boot-rpi3.bin
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        # U-Boot used to need this to work, regardless of whether UART is actually used or not.
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        # TODO: check when/if this can be removed.
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        enable_uart=1
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      '';
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      in ''
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        (cd ${pkgs.raspberrypifw}/share/raspberrypi/boot && cp bootcode.bin fixup*.dat start*.elf $NIX_BUILD_TOP/firmware/)
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        cp ${pkgs.ubootRaspberryPi2}/u-boot.bin firmware/u-boot-rpi2.bin
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        cp ${pkgs.ubootRaspberryPi3_32bit}/u-boot.bin firmware/u-boot-rpi3.bin
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        cp ${configTxt} firmware/config.txt
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      '';
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    populateRootCommands = ''
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      mkdir -p ./files/boot
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      ${extlinux-conf-builder} -t 3 -c ${config.system.build.toplevel} -d ./files/boot
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    '';
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  };
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  # the installation media is also the installation target,
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  # so we don't want to provide the installation configuration.nix.
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  installer.cloneConfig = false;
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}
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