forked from mirrors/nixpkgs
8bc970bbc7
Uboot is copied into `/boot` in the installation process. The boot entries are created by calling the `generic-extlinux-compatible` builder.
106 lines
2.6 KiB
Nix
106 lines
2.6 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.boot.loader.raspberryPi;
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builderGeneric = pkgs.substituteAll {
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src = ./builder.sh;
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isExecutable = true;
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inherit (pkgs) bash;
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path = [pkgs.coreutils pkgs.gnused pkgs.gnugrep];
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firmware = pkgs.raspberrypifw;
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version = cfg.version;
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inherit configTxt;
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};
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platform = pkgs.stdenv.platform;
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builderUboot = import ./builder_uboot.nix { inherit config; inherit pkgs; inherit configTxt; };
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builder =
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if cfg.uboot.enable then
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"${builderUboot} -g ${toString cfg.uboot.configurationLimit} -t ${timeoutStr} -c"
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else
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builderGeneric;
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blCfg = config.boot.loader;
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timeoutStr = if blCfg.timeout == null then "-1" else toString blCfg.timeout;
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isAarch64 = pkgs.stdenv.isAarch64;
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optional = pkgs.stdenv.lib.optionalString;
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configTxt =
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pkgs.writeText "config.txt" (''
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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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# 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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'' + optional isAarch64 ''
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# Boot in 64-bit mode.
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arm_control=0x200
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'' + optional cfg.uboot.enable ''
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kernel=u-boot-rpi.bin
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'');
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in
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{
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options = {
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boot.loader.raspberryPi = {
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enable = mkOption {
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default = false;
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type = types.bool;
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description = ''
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Whether to create files with the system generations in
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<literal>/boot</literal>.
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<literal>/boot/old</literal> will hold files from old generations.
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'';
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};
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version = mkOption {
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default = 2;
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type = types.enum [ 1 2 3 ];
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description = ''
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'';
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};
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uboot = {
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enable = mkOption {
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default = false;
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type = types.bool;
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description = ''
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Enable using uboot as bootmanager for the raspberry pi.
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'';
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};
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configurationLimit = mkOption {
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default = 20;
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example = 10;
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type = types.int;
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description = ''
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Maximum number of configurations in the boot menu.
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'';
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};
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};
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};
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};
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config = mkIf cfg.enable {
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assertions = singleton {
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assertion = !pkgs.stdenv.isAarch64 || cfg.version == 3;
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message = "Only Raspberry Pi 3 supports aarch64.";
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};
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system.build.installBootLoader = builder;
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system.boot.loader.id = "raspberrypi";
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system.boot.loader.kernelFile = platform.kernelTarget;
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};
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}
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