rockchip/rk3399: init

rockchip/default.nix

@@ -0,0 +1,33 @@
+{ lib
+, pkgs
+, config
+, ...
+}:
+let
+  cfg = config.hardware.rockchip;
+in {
+  options.hardware.rockchip = {
+    enable = lib.mkEnableOption "Rockchip SoC support";
+    diskoImageName = lib.mkOption {
+      type = lib.types.str;
+      default = "main.raw";
+      description = ''
+        The output image name for Disko.
+        Can be used by diskoExtraPostVM.
+      '';
+    };
+    diskoExtraPostVM = lib.mkOption {
+      type = lib.types.str;
+      description = ''
+        The post VM hook for Disko's Image Builder.
+        Can be used to install platform firmware like U-Boot.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    boot = {
+      kernelParams = [ "console=ttyS2,1500000n8" ];
+    };
+  };
+}

rockchip/disko.nix

@@ -0,0 +1,62 @@
+{ lib
+, pkgs
+, config
+, ...
+}:
+let
+  cfg = config.hardware.rockchip;
+in {
+  imports = [
+    rk3399/disko.nix
+  ];
+
+  config = lib.mkIf cfg.enable {
+    disko = {
+      imageBuilder = {
+        extraRootModules = [ "bcachefs" ];
+        extraPostVM = cfg.diskoExtraPostVM;
+      };
+      memSize = lib.mkDefault 4096; # Default 1024 MB will throw "Cannot allocate memory" error
+      devices.disk.main = {
+        type = "disk";
+        imageSize = lib.mkDefault "2G";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              type = "EF00";
+              # Firmware backoff
+              start = "16M";
+              size = "500M";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "umask=0022" ];
+              };
+            };
+            root = {
+              size = "100%";
+              content = {
+                type = "filesystem";
+                format = "bcachefs";
+                mountpoint = "/";
+                extraArgs = [
+                  "--metadata_checksum=xxhash"
+                  "--data_checksum=xxhash"
+                  "--compression=zstd"
+                  "--background_compression=zstd"
+                  "--str_hash=siphash"
+                  "--wide_macs"
+                  "--encrypted"
+                  "--no_passphrase"
+                  "--discard"
+                ];
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

rockchip/rk3399/default.nix

@@ -0,0 +1,20 @@
+{ lib
+, pkgs
+, config
+, ...
+}:
+let
+  cfg = config.hardware.rockchip.rk3399;
+in {
+  imports = [
+    ../.
+  ];
+
+  options.hardware.rockchip.rk3399 = {
+      enable = lib.mkEnableOption "Rockchip RK3399 support";
+  };
+
+  config = lib.mkIf cfg.enable {
+    hardware.rockchip.enable = true;
+  };
+}

rockchip/rk3399/disko.nix

@@ -0,0 +1,14 @@
+{ lib
+, pkgs
+, config
+, ...
+}:
+let
+  cfg = config.hardware.rockchip.rk3399;
+in {
+  config = lib.mkIf cfg.enable {
+    nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
+      "arm-trusted-firmware-rk3399"
+    ];
+  };
+}