From 75491745d24ce1e2f3b0da94edcea228196777d4 Mon Sep 17 00:00:00 2001
From: Paul Selkirk <paul@psgd.org>
Date: Tue, 31 Mar 2015 16:31:41 -0400
Subject: Conditionalize trng so it can be easily excluded.

---
 core_selector/src/rtl/rng_selector.v | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/core_selector/src/rtl/rng_selector.v b/core_selector/src/rtl/rng_selector.v
index 3a0bd73..0b56684 100644
--- a/core_selector/src/rtl/rng_selector.v
+++ b/core_selector/src/rtl/rng_selector.v
@@ -57,6 +57,10 @@ module rng_selector
    );
 
 
+`define USE_TRNG
+
+`ifdef USE_TRNG
+
    // This is a pass-through to trng.v, which instantiates and muxes the
    // entropy sources, mixer, and csprng.
 
@@ -77,6 +81,13 @@ module rng_selector
       .debug(debug)
       );
 
+`else
+
+   assign sys_read_data = {32{1'b0}};
+   assign debug         = {32{1'b0}};
+
+`endif
+
 endmodule
 
 //======================================================================
-- 
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