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authorJoachim StroĢˆmbergson <joachim@secworks.se>2014-09-16 17:31:19 +0200
committerJoachim StroĢˆmbergson <joachim@secworks.se>2014-09-16 17:31:19 +0200
commit3b2be624c6867da6a744e80cf3e2c0eca9375933 (patch)
tree9db291c497070d507193f40c18b3bf4ff3c6147b /src/rtl/wrappers
parent12a1170111dc210b54aa499ae5bb7ee245331945 (diff)
Adding initial version of wrapper for the avalance entropy core to be used during synthesis.
Diffstat (limited to 'src/rtl/wrappers')
-rw-r--r--src/rtl/wrappers/trng_avalanche_entropy.v123
1 files changed, 123 insertions, 0 deletions
diff --git a/src/rtl/wrappers/trng_avalanche_entropy.v b/src/rtl/wrappers/trng_avalanche_entropy.v
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+ //======================================================================
+//
+// trng_avalanche_entropy.v
+// ------------------------
+// Wrapper for the avalanche entropy core to adapt it to the trng.
+//
+//
+// Author: Joachim Strombergson
+// Copyright (c) 2014, NORDUnet A/S All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// - Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// - Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+//
+// - Neither the name of the NORDUnet nor the names of its contributors may
+// be used to endorse or promote products derived from this software
+// without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+//======================================================================
+
+module trng_avalanche_entropy(
+ // Clock and reset.
+ input wire clk,
+ input wire reset_n,
+
+ input wire noise,
+
+ output wire [31 : 0] raw_entropy,
+ output wire [31 : 0] stats,
+
+ output wire enabled,
+ output wire entropy_syn,
+ output wire [31 : 0] entropy_data,
+ input wire entropy_ack
+ );
+
+
+ //----------------------------------------------------------------
+ // Internal constant and parameter definitions.
+ //----------------------------------------------------------------
+
+
+ //----------------------------------------------------------------
+ // Registers including update variables and write enable.
+ //----------------------------------------------------------------
+
+
+
+ //----------------------------------------------------------------
+ // Wires.
+ //----------------------------------------------------------------
+
+
+ //----------------------------------------------------------------
+ // Concurrent connectivity for ports etc.
+ //----------------------------------------------------------------
+
+
+ //----------------------------------------------------------------
+ // core instantiations.
+ //----------------------------------------------------------------
+ avalance_entropy_core core(
+ .clk(clk),
+ .reset_n(reset_n),
+
+ .enable(entropy1_enable),
+
+ .noise(avalanche_noise),
+
+ .raw_entropy(entropy1_raw),
+ .stats(entropy1_stats),
+
+ .enabled(entropy1_enabled),
+ .entropy_syn(entropy1_syn),
+ .entropy_data(entropy1_data),
+ .entropy_ack(entropy1_ack),
+ .led()
+ );
+
+
+ //----------------------------------------------------------------
+ // reg_update
+ //
+ // Update functionality for all registers in the core.
+ // All registers are positive edge triggered with asynchronous
+ // active low reset. All registers have write enable.
+ //----------------------------------------------------------------
+ always @ (posedge clk or negedge reset_n)
+ begin
+ if (!reset_n)
+ begin
+
+ end
+
+ else
+ begin
+
+ end
+ end // reg_update
+
+endmodule // trng_avalanche_entropy
+
+//======================================================================
+// EOF trng_avalanche_entropy.v
+//======================================================================