Add configuration for Lagarto Ox

flake.nix

@@ -58,6 +58,17 @@
           ./no-compressed.nix
         ];
       };
+
+      # FPGA Lagarto Ox CPU
+      lagarto-ox = nixosSystem {
+        specialArgs = { inherit self; };
+        system = "${system}";
+        modules = [
+          ./configuration.nix
+          ./lagarto-ox.nix
+          ./no-compressed.nix
+        ];
+      };
     };
 
     # A development shell with QEMU ready to boot the RISC-V system in an x86
@@ -97,5 +108,29 @@
         echo " UBOOT_ENV = $UBOOT_ENV"
       '';
     };
+
+    devShells.x86_64-linux.lagarto-ox =
+    let
+      nixosconf = self.nixosConfigurations.lagarto-ox;
+      syspkgs = nixosconf.pkgs;
+      build = nixosconf.config.system.build;
+    in syspkgs.mkShell {
+      pname = "lagarto-ox-shell";
+      TOPLEVEL = build.toplevel;
+      OPENSBI = syspkgs.opensbi;
+      KERNEL = build.kernel;
+      INITRD = build.initialRamdisk;
+      ROOTFS = build.sdImage;
+      UBOOT_ENV = syspkgs.uboot-env;
+      shellHook = ''
+        echo "Here are the current system pieces:"
+        echo " TOPLEVEL  = $TOPLEVEL"
+        echo " KERNEL    = $KERNEL"
+        echo " OPENSBI   = $OPENSBI"
+        echo " INITRD    = $INITRD"
+        echo " ROOTFS    = $ROOTFS"
+        echo " UBOOT_ENV = $UBOOT_ENV"
+      '';
+    };
   };
 }