feat(firmware_recipes): Add firmware recipes according to platform

pkgs/firmware/openSBI/openSBI.nix

@@ -6,7 +6,6 @@
 , toolchain
 , openssl
 , platform
-, bao_build
 , bash
 }:
 

pkgs/firmware/qemu-aarch64-virt.nix

@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: Apache-2.0
+# Copyright (c) Bao Project and Contributors. All rights reserved.
+{ pkgs
+, stdenv
+, fetchFromGitHub
+, toolchain
+, platform
+}:
+let
+  u-boot = pkgs.callPackage ./u-boot/u-boot.nix 
+  {
+    inherit toolchain;
+  };
+
+  atf = pkgs.callPackage ./atf/atf.nix {
+    inherit toolchain;
+    inherit u-boot; 
+    inherit platform;
+  };
+in
+stdenv.mkDerivation rec {
+    pname = "qemu_aarch64_virt";
+    version = "firmware";
+
+    dontUnpack = true;
+    dontBuild = true;
+
+    nativeBuildInputs = [
+        u-boot
+        atf
+    ];
+
+    installPhase = ''
+        mkdir -p $out
+        touch $out/test_derivation.txt
+        find ${atf} -type f -exec cp {} $out \;
+        find ${u-boot} -type f -exec cp {} $out \;
+    '';
+}

pkgs/firmware/qemu-riscv64-virt.nix

@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: Apache-2.0
+# Copyright (c) Bao Project and Contributors. All rights reserved.
+{ pkgs
+, stdenv
+, fetchFromGitHub
+, toolchain
+, platform
+}:
+let
+  sbi = pkgs.callPackage ./openSBI/openSBI.nix {
+    inherit toolchain;
+    inherit platform;
+  };
+in
+stdenv.mkDerivation rec {
+    pname = "qemu_riscv64_virt";
+    version = "firmware";
+
+    dontUnpack = true;
+    dontBuild = true;
+
+    nativeBuildInputs = [
+        sbi
+    ];
+
+    installPhase = ''
+        mkdir -p $out
+        touch $out/test_derivation.txt
+        find ${sbi} -type f -exec cp {} $out \;
+    '';
+}