initial snapshot

lancom-kernel.nix

@@ -0,0 +1,53 @@
+# see https://discourse.nixos.org/t/port-nixos-to-ppc32/11965/13
+
+{
+  buildLinux,
+  fetchFromGitHub,
+  fetchurl,
+  lib,
+  stdenv,
+  ...
+}@args:
+lib.overrideDerivation
+  (buildLinux (
+    args
+    // {
+      version = "6.13.0-rc4";
+      src = fetchFromGitHub {
+        owner = "neuschaefer";
+        repo = "linux";
+        rev = "sha256-Mbbw+P8Fv1OL+sN4nZ/lc/ONibkEOivLx5QVXjVO7KU="; # mpc83xx branch
+        hash = "sha256-Mbbw+P8Fv1OL+sN4nZ/lc/ONibkEOivLx5QVXjVO7KU=";
+      };
+
+      kernelPatches = [ ];
+
+      features = {
+        efiBootStub = false;
+        iwlwifi = false;
+        needsCifsUtils = false;
+      };
+
+      autoModules = false;
+
+      # enable nvme, disable kprobes because it takes too long at boot
+      structuredExtraConfig = with lib.kernel; {
+        BLK_DEV_NVME = yes;
+        KPROBES = lib.mkForce no;
+        FTRACE = lib.mkForce no;
+        RC_CORE = lib.mkForce no;
+        KEYRING = lib.mkForce no;
+
+        DEFAULT_UIMAGE = yes;
+      };
+      defconfig = "mpc83xx_defconfig";
+    }
+  ))
+  (old: {
+    postInstall =
+      ''
+          cp arch/powerpc/boot/uImage $out/
+        	# lancom-nwapp2.dts ?
+      ''
+      + old.postInstall;
+  })