From 328d5f782e8f8af8dcb19f8b18ea4c683dfd5619 Mon Sep 17 00:00:00 2001
From: Chris Toph <toph@ryot.foo>
Date: Wed, 25 Jun 2025 15:59:27 -0400
Subject: [PATCH] Add kernel workarounds for amd boot issues

---
 hosts/x86/rune/hardware.nix |  5 +++++
 overlays/default.nix        | 11 ++++++++---
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/hosts/x86/rune/hardware.nix b/hosts/x86/rune/hardware.nix
index 1f9dcc9..a7dd61e 100644
--- a/hosts/x86/rune/hardware.nix
+++ b/hosts/x86/rune/hardware.nix
@@ -43,6 +43,11 @@
       ];
       kernelModules = [ ];
     };
+
+    # Workaround for boot issues
+    kernelParams = [
+      "amdgpu.dcdebugmask=0x10"
+    ];
     kernelModules = [
       "kvm-amd"
       "amdgpu"
diff --git a/overlays/default.nix b/overlays/default.nix
index 482e7aa..62fa599 100644
--- a/overlays/default.nix
+++ b/overlays/default.nix
@@ -16,9 +16,14 @@ let
   linuxModifications = final: prev: prev.lib.mkIf final.stdenv.isLinux { };
 
   modifications = final: prev: {
-    # example = prev.example.overrideAttrs (oldAttrs: let ... in {
-    # ...
-    # });
+    ## FIXME: Workaround, amd drivers are borked on current nixpkgs-unstable
+    linux-firmware = prev.linux-firmware.overrideAttrs (old: rec {
+      version = "20250509";
+      src = prev.fetchzip {
+        url = "https://cdn.kernel.org/pub/linux/kernel/firmware/linux-firmware-${version}.tar.xz";
+        hash = "sha256-0FrhgJQyCeRCa3s0vu8UOoN0ZgVCahTQsSH0o6G6hhY=";
+      };
+    });
   };
 
   stable-packages = final: _prev: {