From: Sebastien Bourdeauducq <sebastien@milkymist.org>
Date: Sun, 1 Apr 2012 14:39:11 +0000 (+0200)
Subject: fhdl/verilog: initialize internal read-only signals with their reset values
X-Git-Tag: 24jan2021_ls180~2099^2~958
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f3ae22f488119aa273882adcd6537bc6b54dc66a;p=litex.git

fhdl/verilog: initialize internal read-only signals with their reset values
---

diff --git a/migen/fhdl/verilog.py b/migen/fhdl/verilog.py
index 854da372..f6326e74 100644
--- a/migen/fhdl/verilog.py
+++ b/migen/fhdl/verilog.py
@@ -220,6 +220,16 @@ def _printmemories(f, ns, handler, clk):
 		r += handler(memory, ns, clk)
 	return r
 
+def _printinit(f, exclude, ns):
+	r = ""
+	signals = list_signals(f) - exclude - list_targets(f)
+	if signals:
+		r += "initial begin\n"
+		for s in signals:
+			r += "\t" + ns.get_name(s) + " <= " + _printexpr(ns, s.reset) + ";\n"
+		r += "end\n\n"
+	return r
+
 def convert(f, ios=set(), name="top",
   clk_signal=None, rst_signal=None,
   return_ns=False,
@@ -243,6 +253,7 @@ def convert(f, ios=set(), name="top",
 	r += _printsync(f, ns, clk_signal, rst_signal)
 	r += _printinstances(f, ns, clk_signal, rst_signal)
 	r += _printmemories(f, ns, memory_handler, clk_signal)
+	r += _printinit(f, ios, ns)
 	r += "endmodule\n"
 
 	if return_ns: