151 lines
4.2 KiB
Nix
151 lines
4.2 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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builderUboot = import ./uboot-builder.nix { inherit pkgs configTxt; inherit (cfg) version; };
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builderGeneric = import ./raspberrypi-builder.nix { inherit pkgs 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} -c";
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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.hostPlatform.isAarch64;
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optional = pkgs.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_64bit=1
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'' + (if cfg.uboot.enable then ''
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kernel=u-boot-rpi.bin
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'' else ''
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kernel=kernel.img
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initramfs initrd followkernel
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'') + optional (cfg.firmwareConfig != null) cfg.firmwareConfig);
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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 = lib.mdDoc ''
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Whether to create files with the system generations in
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`/boot`.
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`/boot/old` will hold files from old generations.
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::: {.note}
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These options are deprecated, unsupported, and may not work like expected.
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:::
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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 [ 0 1 2 3 4 ];
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description = lib.mdDoc "";
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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 = lib.mdDoc ''
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Enable using uboot as bootmanager for the raspberry pi.
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::: {.note}
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These options are deprecated, unsupported, and may not work like expected.
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:::
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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 = lib.mdDoc ''
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Maximum number of configurations in the boot menu.
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::: {.note}
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These options are deprecated, unsupported, and may not work like expected.
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:::
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'';
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};
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};
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firmwareConfig = mkOption {
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default = null;
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type = types.nullOr types.lines;
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description = lib.mdDoc ''
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Extra options that will be appended to `/boot/config.txt` file.
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For possible values, see: https://www.raspberrypi.com/documentation/computers/config_txt.html
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::: {.note}
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These options are deprecated, unsupported, and may not work like expected.
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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 = mkMerge[
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(mkIf cfg.uboot.enable {
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warnings = [
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''
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The option set for `boot.loader.raspberrypi.uboot` has been recommended against
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for years, and is now formally deprecated.
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It is possible it already did not work like you expected.
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It never worked on the Raspberry Pi 4 family.
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These options will be removed by NixOS 24.11.
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''
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];
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})
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(mkIf cfg.enable {
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warnings = [
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''
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The option set for `boot.loader.raspberrypi` has been recommended against
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for years, and is now formally deprecated.
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It is possible it already did not work like you expected.
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It never worked on the Raspberry Pi 4 family.
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These options will be removed by NixOS 24.11.
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''
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];
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})
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(mkIf cfg.enable {
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assertions = singleton {
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assertion = !pkgs.stdenv.hostPlatform.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 = pkgs.stdenv.hostPlatform.linux-kernel.target;
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})
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];
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}
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