diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 00d0103e6b7..0dbdda68d3c 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -420,6 +420,7 @@
./services/hardware/pcscd.nix
./services/hardware/pommed.nix
./services/hardware/power-profiles-daemon.nix
+ ./services/hardware/rasdaemon.nix
./services/hardware/ratbagd.nix
./services/hardware/sane.nix
./services/hardware/sane_extra_backends/brscan4.nix
diff --git a/nixos/modules/services/hardware/rasdaemon.nix b/nixos/modules/services/hardware/rasdaemon.nix
new file mode 100644
index 00000000000..b1efe0f18c8
--- /dev/null
+++ b/nixos/modules/services/hardware/rasdaemon.nix
@@ -0,0 +1,171 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+ cfg = config.hardware.rasdaemon;
+
+in
+{
+ options.hardware.rasdaemon = {
+
+ enable = mkEnableOption "RAS logging daemon";
+
+ record = mkOption {
+ type = types.bool;
+ default = true;
+ description = "record events via sqlite3, required for ras-mc-ctl";
+ };
+
+ mainboard = mkOption {
+ type = types.lines;
+ default = "";
+ description = "Custom mainboard description, see ras-mc-ctl8 for more details.";
+ example = ''
+ vendor = ASRock
+ model = B450M Pro4
+
+ # it should default to such values from
+ # /sys/class/dmi/id/board_[vendor|name]
+ # alternatively one can supply a script
+ # that returns the same format as above
+
+ script =
+ '';
+ };
+
+ # TODO, accept `rasdaemon.labels = " ";` or `rasdaemon.labels = { dell = " "; asrock = " "; };'
+
+ labels = mkOption {
+ type = types.lines;
+ default = "";
+ description = "Additional memory module label descriptions to be placed in /etc/ras/dimm_labels.d/labels";
+ example = ''
+ # vendor and model may be shown by 'ras-mc-ctl --mainboard'
+ vendor: ASRock
+ product: To Be Filled By O.E.M.
+ model: B450M Pro4
+ # these labels are names for the motherboard slots
+ # the numbers may be shown by `ras-mc-ctl --error-count`
+ # they are mc:csrow:channel
+ DDR4_A1: 0.2.0; DDR4_B1: 0.2.1;
+ DDR4_A2: 0.3.0; DDR4_B2: 0.3.1;
+ '';
+ };
+
+ config = mkOption {
+ type = types.lines;
+ default = "";
+ description = ''
+ rasdaemon configuration, currently only used for CE PFA
+ for details, read rasdaemon.outPath/etc/sysconfig/rasdaemon's comments
+ '';
+ example = ''
+ # defaults from included config
+ PAGE_CE_REFRESH_CYCLE="24h"
+ PAGE_CE_THRESHOLD="50"
+ PAGE_CE_ACTION="soft"
+ '';
+ };
+
+ extraModules = mkOption {
+ type = types.listOf types.str;
+ default = [];
+ description = "extra kernel modules to load";
+ example = [ "i7core_edac" ];
+ };
+
+ testing = mkEnableOption "error injection infrastructure";
+ };
+
+ config = mkIf cfg.enable {
+
+ environment.etc = {
+ "ras/mainboard" = {
+ enable = cfg.mainboard != "";
+ text = cfg.mainboard;
+ };
+ # TODO, handle multiple cfg.labels.brand = " ";
+ "ras/dimm_labels.d/labels" = {
+ enable = cfg.labels != "";
+ text = cfg.labels;
+ };
+ "sysconfig/rasdaemon" = {
+ enable = cfg.config != "";
+ text = cfg.config;
+ };
+ };
+ environment.systemPackages = [ pkgs.rasdaemon ]
+ ++ optionals (cfg.testing) (with pkgs.error-inject; [
+ edac-inject
+ mce-inject
+ aer-inject
+ ]);
+
+ boot.initrd.kernelModules = cfg.extraModules
+ ++ optionals (cfg.testing) [
+ # edac_core and amd64_edac should get loaded automatically
+ # i7core_edac may not be, and may not be required, but should load successfully
+ "edac_core"
+ "amd64_edac"
+ "i7core_edac"
+ "mce-inject"
+ "aer-inject"
+ ];
+
+ boot.kernelPatches = optionals (cfg.testing) [{
+ name = "rasdaemon-tests";
+ patch = null;
+ extraConfig = ''
+ EDAC_DEBUG y
+ X86_MCE_INJECT y
+
+ PCIEPORTBUS y
+ PCIEAER y
+ PCIEAER_INJECT y
+ '';
+ }];
+
+ # i tried to set up a group for this
+ # but rasdaemon needs higher permissions?
+ # `rasdaemon: Can't locate a mounted debugfs`
+
+ # most of this taken from src/misc/
+ systemd.services = {
+ rasdaemon = {
+ description = "the RAS logging daemon";
+ documentation = [ "man:rasdaemon(1)" ];
+ wantedBy = [ "multi-user.target" ];
+ after = [ "syslog.target" ];
+
+ serviceConfig = {
+ StateDirectory = optionalString (cfg.record) "rasdaemon";
+
+ ExecStart = "${pkgs.rasdaemon}/bin/rasdaemon --foreground"
+ + optionalString (cfg.record) " --record";
+ ExecStop = "${pkgs.rasdaemon}/bin/rasdaemon --disable";
+ Restart = "on-abort";
+
+ # src/misc/rasdaemon.service.in shows this:
+ # ExecStartPost = ${pkgs.rasdaemon}/bin/rasdaemon --enable
+ # but that results in unpredictable existence of the database
+ # and everything seems to be enabled without this...
+ };
+ };
+ ras-mc-ctl = mkIf (cfg.labels != "") {
+ description = "register DIMM labels on startup";
+ documentation = [ "man:ras-mc-ctl(8)" ];
+ wantedBy = [ "multi-user.target" ];
+ serviceConfig = {
+ Type = "oneshot";
+ ExecStart = "${pkgs.rasdaemon}/bin/ras-mc-ctl --register-labels";
+ RemainAfterExit = true;
+ };
+ };
+ };
+ };
+
+ meta.maintainers = [ maintainers.evils ];
+
+}