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+//======================================================================
+//
+// tb_keywrap_mkm.v
+// ----------------
+// Testbench for the mkmif wrapper in keywrap.
+//
+//
+// Author: Joachim Strombergson
+// Copyright (c) 2018, 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 tb_keywrap_mkm();
+
+ //----------------------------------------------------------------
+ // Parameters.
+ //----------------------------------------------------------------
+ parameter DEBUG = 1;
+
+ parameter CLK_HALF_PERIOD = 1;
+ parameter CLK_PERIOD = 2 * CLK_HALF_PERIOD;
+
+
+ //----------------------------------------------------------------
+ // Variables, regs and wires.
+ //----------------------------------------------------------------
+ integer cycle_ctr;
+ integer error_ctr;
+ integer tc_ctr;
+
+ reg tb_clk;
+ reg tb_reset_n;
+
+
+ //----------------------------------------------------------------
+ // Device Under Test.
+ //----------------------------------------------------------------
+ keywrap_mkmif dut(
+ .clk(tb_clk),
+ .reset_n(tb_reset_n),
+
+ .mkm_spi_sclk(),
+ .mkm_spi_cs_n(),
+ .mkm_spi_do(),
+ .mkm_spi_di(),
+
+ .init(),
+ .read(),
+ .write(),
+ .key_status(),
+ .ready(),
+
+ .wr_status(),
+ .rd_status(),
+ .wr_key(),
+ .rd_key
+ );
+
+
+ //----------------------------------------------------------------
+ // clk_gen
+ //
+ // Always running clock generator process.
+ //----------------------------------------------------------------
+ always
+ begin : clk_gen
+ #CLK_HALF_PERIOD;
+ tb_clk = !tb_clk;
+ end // clk_gen
+
+
+ //----------------------------------------------------------------
+ // sys_monitor()
+ //
+ // An always running process that creates a cycle counter and
+ // conditionally displays information about the DUT.
+ //----------------------------------------------------------------
+ always
+ begin : sys_monitor
+ cycle_ctr = cycle_ctr + 1;
+
+ #(CLK_PERIOD);
+ end
+
+
+ //----------------------------------------------------------------
+ // init_sim()
+ //
+ // Initialize all counters and testbed functionality as well
+ // as setting the DUT inputs to defined values.
+ //----------------------------------------------------------------
+ task init_sim;
+ begin
+ cycle_ctr = 0;
+ error_ctr = 0;
+ tc_ctr = 0;
+
+ tb_clk = 1'h0;
+ tb_reset_n = 1'h1
+
+ #(CLK_PERIOD);
+ end
+ endtask // init_sim
+
+
+ //----------------------------------------------------------------
+ // main
+ //----------------------------------------------------------------
+ initial
+ begin : main
+ $display(" -= Testbench for Keywrap mkmif wrapper started =-");
+ $display(" ================================================");
+ $display("");
+
+ init_sim();
+
+ $display("");
+ $display("*** Keywrap mkmif wrapper testbench done. ***");
+ $finish;
+ end // main
+
+endmodule // tb_keywrap_mkm
+
+//======================================================================
+// EOF tb_keywrap_mkm.v
+//======================================================================