From e8d5e4c78844d1bf6e6ea096b03e4b422265f0df Mon Sep 17 00:00:00 2001
From: Daniel Barlow <dan@telent.net>
Date: Tue, 7 Mar 2023 21:32:21 +0000
Subject: [PATCH] move regulatory.db to wlan module

---
 devices/gl-ar750/default.nix  |  2 --
 devices/gl-mt300a/default.nix |  4 ++--
 modules/wlan.nix              | 17 ++++++++++++++++-
 3 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/devices/gl-ar750/default.nix b/devices/gl-ar750/default.nix
index be683e1..b452674 100644
--- a/devices/gl-ar750/default.nix
+++ b/devices/gl-ar750/default.nix
@@ -58,7 +58,6 @@
         phases = ["installPhase"];
         installPhase = ''
           mkdir -p $out/ath10k/QCA9887/hw1.0/
-          cp ${pkgs.wireless-regdb}/lib/firmware/regulatory.db* $out/
           blobdir=${firmwareBlobs}/QCA9887/hw1.0
           cp $blobdir/10.2.4-1.0/firmware-5.bin_10.2.4-1.0-00047 $out/ath10k/QCA9887/hw1.0/firmware-5.bin
           cp $blobdir/board.bin  $out/ath10k/QCA9887/hw1.0/
@@ -120,7 +119,6 @@
       filesystem = dir {
         lib = dir {
           firmware = dir {
-            "regulatory.db" = symlink "${firmware}/regulatory.db";
             ath10k = dir {
               QCA9887 = symlink "${firmware}/ath10k/QCA9887";
               "cal-pci-0000:00:00.0.bin" = symlink "${ath10k_cal_data}/.outputs/data";
diff --git a/devices/gl-mt300a/default.nix b/devices/gl-mt300a/default.nix
index 3041884..862a823 100644
--- a/devices/gl-mt300a/default.nix
+++ b/devices/gl-mt300a/default.nix
@@ -13,8 +13,8 @@
 
   description = ''
     WiFi on this device is provided by the rt2800soc module. It
-    expects firmware to be present in the "???" MTD partition, so -
-    assuming we want to use the wireless - we need to build MTD
+    expects firmware to be present in the "factory" MTD partition, so
+    - assuming we want to use the wireless - we need to build MTD
     support into the kernel even if we're using TFTP root
   '';
 
diff --git a/modules/wlan.nix b/modules/wlan.nix
index c92ec02..4af730a 100644
--- a/modules/wlan.nix
+++ b/modules/wlan.nix
@@ -2,9 +2,24 @@
 let
   inherit (lib) mkEnableOption mkOption types isDerivation hasAttr ;
   inherit (pkgs.pseudofile) dir symlink;
-  inherit (pkgs) busybox;
+  inherit (pkgs) stdenv busybox wireless-regdb;
+  regulatory = stdenv.mkDerivation {
+    name = "regulatory.db";
+    phases = ["installPhase"];
+    installPhase = ''
+      mkdir -p $out
+      cp ${wireless-regdb}/lib/firmware/regulatory.db $out/
+    '';
+  };
 in {
   config = {
+    filesystem = dir {
+      lib = dir {
+        firmware = dir {
+          "regulatory.db" = symlink "${regulatory}/regulatory.db";
+        };
+      };
+    };
     kernel = rec {
       config = {
         # Most of this is necessary infra to allow wireless stack/