From 9c43fe85c63458e9df8b98fc649dee75e3135e8f Mon Sep 17 00:00:00 2001
From: Christian Klarhorst <cklarhor@techfak.uni-bielefeld.de>
Date: Sun, 25 Sep 2022 21:00:03 +0200
Subject: [PATCH] cpu/naxriscv: Add --no-netlist-cache

Ignores the netlist cache.
When you hack on naxriscv code, you always want fresh results.
---
 litex/soc/cores/cpu/naxriscv/core.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/litex/soc/cores/cpu/naxriscv/core.py b/litex/soc/cores/cpu/naxriscv/core.py
index 18eb75289..ee14e5c23 100755
--- a/litex/soc/cores/cpu/naxriscv/core.py
+++ b/litex/soc/cores/cpu/naxriscv/core.py
@@ -99,6 +99,7 @@ class NaxRiscv(CPU):
         cpu_group.add_argument("--with-jtag-tap", action="store_true", help="Add a embedded JTAG tap for debugging")
         cpu_group.add_argument("--with-jtag-instruction", action="store_true", help="Add a JTAG instruction port which implement tunneling for debugging (TAP not included)")
         cpu_group.add_argument("--update-repo",   default="recommended", choices=["latest","wipe+latest","recommended","wipe+recommended","no"], help="Specify how the NaxRiscv & SpinalHDL repo should be updated (latest: update to HEAD, recommended: Update to known compatible version, no: Don't update, wipe+*: Do clean&reset before checkout)")
+        cpu_group.add_argument("--no-netlist-cache", action="store_true", help="Always (re-)build the netlist")
 
     @staticmethod
     def args_read(args):
@@ -106,6 +107,7 @@ class NaxRiscv(CPU):
         NaxRiscv.jtag_tap = args.with_jtag_tap
         NaxRiscv.jtag_instruction = args.with_jtag_instruction
         NaxRiscv.update_repo = args.update_repo
+        NaxRiscv.no_netlist_cache = args.no_netlist_cache
         if args.scala_file:
             NaxRiscv.scala_files = args.scala_file
         if args.scala_args:
@@ -265,7 +267,7 @@ class NaxRiscv(CPU):
     def add_sources(self, platform):
         vdir = get_data_mod("cpu", "naxriscv").data_location
         print(f"NaxRiscv netlist : {self.netlist_name}")
-        if not os.path.exists(os.path.join(vdir, self.netlist_name + ".v")):
+        if NaxRiscv.no_netlist_cache or not os.path.exists(os.path.join(vdir, self.netlist_name + ".v")):
             self.generate_netlist(self.reset_address)
 
         # Add RAM.