Try adding soquartz

.gitignore

@@ -2,6 +2,7 @@
 .idea
 *.log
 tmp/
+/result
 
 # just now we don't want to lock
 flake.lock

default.nix

@@ -1,19 +1,25 @@
-{ pkgs ? import <nixpkgs> {} }:
+{ pkgs ? import <nixos-unstable> { }
+}:
 
 let
   aarch64Pkgs = import pkgs.path {
     system = "aarch64-linux";
   };
 
-  buildImage = pkgs.callPackage ./pkgs/build-image {};
-  aarch64Image = pkgs.callPackage ./pkgs/aarch64-image {};
+  buildImage = pkgs.callPackage ./pkgs/build-image { };
+  aarch64Image = pkgs.callPackage ./pkgs/aarch64-image { };
   rockchip = uboot: pkgs.callPackage ./images/rockchip.nix {
     inherit uboot;
     inherit aarch64Image buildImage;
   };
-in {
+  quartzUBoots = aarch64Pkgs.callPackage ./pkgs/uboot-quartz64.nix { };
+in
+{
   inherit aarch64Image;
 
+  quartz64a = rockchip quartzUBoots.ubootQuartz64a;
+  quartz64b = rockchip quartzUBoots.ubootQuartz64b;
+  soquartz = rockchip quartzUBoots.ubootSoQuartz;
   rock64 = rockchip aarch64Pkgs.ubootRock64;
   rockPro64 = rockchip aarch64Pkgs.ubootRockPro64;
   roc-pc-rk3399 = rockchip aarch64Pkgs.ubootROCPCRK3399;

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1673569462,
+        "narHash": "sha256-iQUrbM/abkPzukU0GXwyb0ACBk1C9RH91Do0nL2/3jE=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "e5c10c91bd8c45f24d5064f7b3a0b71b6c8b343b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "master",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -1,7 +1,7 @@
 {
   description = "Build NixOS images for various ARM single computer boards";
   # pin this to unstable
-  # inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.nixpkgs.url = "github:nixos/nixpkgs/master";
 
   outputs = { self, nixpkgs }: {
     packages.x86_64-linux = import ./. {

pkgs/uboot-quartz64.nix

@@ -0,0 +1,48 @@
+{ lib
+, fetchFromGitHub
+, buildUBoot
+}:
+
+let
+  bl31Blobs = fetchFromGitHub {
+    owner = "JeffyCN";
+    repo = "rockchip_mirrors";
+    rev = "6186debcac95553f6b311cee10669e12c9c9963d";
+    sha256 = "nH/g95QMv0bFgbT5jiKTAa3Vd0gnqtG4M6nkZ5R3S0E=";
+  };
+  rkbinBlobs = fetchFromGitHub {
+    owner = "rockchip-linux";
+    repo = "rkbin";
+    rev = "a4c6de9ea29f275bb1d08c94ccded51ff2ab5b92";
+    sha256 = "e3RH/4hi+xc5cQpzt2txyZYNMGQvC1jGDJpzBY2QSHo=";
+  };
+  buildQuartz64UBoot = (defconfig: buildUBoot {
+    version = "2022.64-rc1";
+    defconfig = defconfig;
+    src = fetchFromGitHub {
+      owner = "CounterPillow";
+      repo = "u-boot-quartz64";
+      rev = "87c317f72735f9b336c55b9e00222e71816040e7";
+      sha256 = "mmy6fY6+7aVSdYr/pZCX2kTP7/Zj3Ib1uBN9gFWFoxw=";
+    };
+    extraMakeFlags = [
+      "ARCH=arm"
+    ];
+    extraMeta = {
+      platforms = [ "aarch64-linux" ];
+      license = lib.licenses.unfreeRedistributableFirmware;
+    };
+    filesToInstall = [ "u-boot.itb" "idbloader.img" ];
+    preConfigure = ''
+      make mrproper
+
+      cp "${bl31Blobs}/bin/rk35/rk3568_bl31_v1.28.elf" "bl31.elf"
+      cp "${rkbinBlobs}/bin/rk35/rk3566_ddr_1056MHz_v1.13.bin" ram_init.bin
+    '';
+  });
+in
+{
+  ubootSoQuartz = buildQuartz64UBoot "soquartz-rk3566_defconfig";
+  ubootQuartz64b = buildQuartz64UBoot "quartz64-b-rk3566_defconfig";
+  ubootQuartz64a = buildQuartz64UBoot "quartz64-a-rk3566_defconfig";
+}