cpu/neorv32/core: Avoid configure_litex_core_complex by passing params to new VHD2VConverter.

Parameters are passed to Yosys to configure them at the top level before VHDL->Verilog conversion.

litex/soc/cores/cpu/neorv32/core.py

@@ -69,10 +69,6 @@ class NEORV32(CPU):
 
         # CPU LiteX Core Complex Wrapper
         self.specials += Instance("neorv32_litex_core_complex",
-            # Parameters.
-            #p_CONFIG      = 2,
-            #p_DEBUG       = False,
-
             # Clk/Rst.
             i_clk_i  = ClockSignal("sys"),
             i_rstn_i = ~(ResetSignal() | self.reset),
@@ -104,6 +100,15 @@ class NEORV32(CPU):
             build_dir     = os.path.abspath(os.path.dirname(__file__)),
             work_package  = "neorv32",
             force_convert = True,
+            params = dict(
+                p_CONFIG = {
+                    "minimal"  : 0,
+                    "lite"     : 1,
+                    "standard" : 2,
+                    "full"     : 3
+                }[variant],
+                p_DEBUG = False,
+            )
         )
 
         # Add Verilog sources
@@ -164,39 +169,5 @@ class NEORV32(CPU):
                 if not os.path.exists(os.path.join(cdir, vhd)):
                     os.system(f"wget https://raw.githubusercontent.com/stnolting/neorv32/main/rtl/{directory}/{vhd} -P {cdir}")
 
-        def configure_litex_core_complex(filename, variant):
-            # Read Wrapper.
-            lines = []
-            f = open(filename)
-            for l in f:
-                lines.append(l)
-            f.close()
-
-            # Configure.
-            _lines = []
-            for l in lines:
-                if "constant CONFIG" in l:
-                    config = {
-                        "minimal"  : "0",
-                        "lite"     : "1",
-                        "standard" : "2",
-                        "full"     : "3"
-                    }[variant]
-                    l = f"\tconstant CONFIG : natural := {config};\n"
-                _lines.append(l)
-            lines = _lines
-
-            # Write Wrapper.
-            f = open(filename, "w")
-            for l in lines:
-                f.write(l)
-            f.close()
-
-        configure_litex_core_complex(
-            filename = os.path.join(cdir, "neorv32_litex_core_complex.vhd"),
-            variant  = variant,
-        )
-
-
     def do_finalize(self):
         assert hasattr(self, "reset_address")