From ce56b11187b92572193fa9327841ad2ef2e792f8 Mon Sep 17 00:00:00 2001 From: Paul Selkirk Date: Tue, 31 Mar 2015 16:29:42 -0400 Subject: Remove wishbone testbench code, because we no longer have the verilog. --- src/tb/tb_wb_sha256.v | 556 -------------------------------------------------- 1 file changed, 556 deletions(-) delete mode 100644 src/tb/tb_wb_sha256.v (limited to 'src/tb') diff --git a/src/tb/tb_wb_sha256.v b/src/tb/tb_wb_sha256.v deleted file mode 100644 index 6d5fe08..0000000 --- a/src/tb/tb_wb_sha256.v +++ /dev/null @@ -1,556 +0,0 @@ -//====================================================================== -// -// tb_wb_sha256.v -// -------------- -// Testbench for the SHA-256 top level Wishbone wrapper. -// -// -// Author: Joachim Strombergson -// Copyright (c) 2014, SUNET -// -// Redistribution and use in source and binary forms, with or -// without modification, are permitted provided that the following -// conditions are met: -// -// 1. Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// -// 2. 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. -// -// 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 OWNER 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. -// -//====================================================================== - -//------------------------------------------------------------------ -// Simulator directives. -//------------------------------------------------------------------ -`timescale 1ns/10ps - - -//------------------------------------------------------------------ -// Test module. -//------------------------------------------------------------------ -module tb_wb_sha256(); - - //---------------------------------------------------------------- - // Internal constant and parameter definitions. - //---------------------------------------------------------------- - parameter DEBUG = 0; - - parameter CLK_HALF_PERIOD = 2; - - // The address map. - parameter ADDR_NAME0 = 8'h00; - parameter ADDR_NAME1 = 8'h01; - parameter ADDR_VERSION = 8'h02; - - parameter ADDR_CTRL = 8'h08; - parameter CTRL_INIT_BIT = 0; - parameter CTRL_INIT_VALUE = 8'h01; - parameter CTRL_NEXT_BIT = 1; - parameter CTRL_NEXT_VALUE = 8'h02; - - parameter ADDR_STATUS = 8'h09; - parameter STATUS_READY_BIT = 0; - parameter STATUS_VALID_BIT = 1; - - parameter ADDR_BLOCK0 = 8'h10; - parameter ADDR_BLOCK1 = 8'h11; - parameter ADDR_BLOCK2 = 8'h12; - parameter ADDR_BLOCK3 = 8'h13; - parameter ADDR_BLOCK4 = 8'h14; - parameter ADDR_BLOCK5 = 8'h15; - parameter ADDR_BLOCK6 = 8'h16; - parameter ADDR_BLOCK7 = 8'h17; - parameter ADDR_BLOCK8 = 8'h18; - parameter ADDR_BLOCK9 = 8'h19; - parameter ADDR_BLOCK10 = 8'h1a; - parameter ADDR_BLOCK11 = 8'h1b; - parameter ADDR_BLOCK12 = 8'h1c; - parameter ADDR_BLOCK13 = 8'h1d; - parameter ADDR_BLOCK14 = 8'h1e; - parameter ADDR_BLOCK15 = 8'h1f; - - parameter ADDR_DIGEST0 = 8'h20; - parameter ADDR_DIGEST1 = 8'h21; - parameter ADDR_DIGEST2 = 8'h22; - parameter ADDR_DIGEST3 = 8'h23; - parameter ADDR_DIGEST4 = 8'h24; - parameter ADDR_DIGEST5 = 8'h25; - parameter ADDR_DIGEST6 = 8'h26; - parameter ADDR_DIGEST7 = 8'h27; - - - //---------------------------------------------------------------- - // Register and Wire declarations. - //---------------------------------------------------------------- - reg [31 : 0] cycle_ctr; - reg [31 : 0] error_ctr; - reg [31 : 0] tc_ctr; - - reg tb_clk; - reg tb_reset; - reg tb_cs; - reg tb_write_read; - reg [7 : 0] tb_address; - reg [31 : 0] tb_data_in; - wire [31 : 0] tb_data_out; - - reg [31 : 0] read_data; - reg [255 : 0] digest_data; - - - //---------------------------------------------------------------- - // Device Under Test. - //---------------------------------------------------------------- - wb_sha256 dut( - .CLK_I(tb_clk), - .RST_I(tb_reset), - - .STB_I(tb_cs), - .WE_I(tb_write_read), - .ACK_O(tb_ack), - .ERR_O(tb_err), - - .ADR_I(tb_address), - .DAT_I(tb_data_in), - .DAT_O(tb_data_out) - ); - - - //---------------------------------------------------------------- - // clk_gen - // - // Clock generator process. - //---------------------------------------------------------------- - always - begin : clk_gen - #CLK_HALF_PERIOD tb_clk = !tb_clk; - end // clk_gen - - - //---------------------------------------------------------------- - // sys_monitor - // - // Generates a cycle counter and displays information about - // the dut as needed. - //---------------------------------------------------------------- - always - begin : sys_monitor - #(2 * CLK_HALF_PERIOD); - cycle_ctr = cycle_ctr + 1; - end - - - //---------------------------------------------------------------- - // dump_dut_state() - // - // Dump the state of the dump when needed. - //---------------------------------------------------------------- - task dump_dut_state(); - begin - $display("State of DUT"); - $display("------------"); - $display("Inputs and outputs:"); - $display("STB_I = 0x%01x, WE_I = 0x%01x", - dut.STB_I, dut.WE_I); - $display("ADR_I = 0x%02x", dut.ADR_I); - $display("DAT_I = 0x%08x, DAT_O = 0x%08x", - dut.DAT_I, dut.DAT_O); - $display("tmp_data_out = 0x%08x", dut.tmp_data_out); - $display(""); - - $display("Control and status:"); - $display("ctrl = 0x%02x, status = 0x%02x", - {dut.next_reg, dut.init_reg}, - {dut.digest_valid_reg, dut.ready_reg}); - $display(""); - - $display("Message block:"); - $display("block0 = 0x%08x, block1 = 0x%08x, block2 = 0x%08x, block3 = 0x%08x", - dut.block0_reg, dut.block1_reg, dut.block2_reg, dut.block3_reg); - $display("block4 = 0x%08x, block5 = 0x%08x, block6 = 0x%08x, block7 = 0x%08x", - dut.block4_reg, dut.block5_reg, dut.block6_reg, dut.block7_reg); - - $display("block8 = 0x%08x, block9 = 0x%08x, block10 = 0x%08x, block11 = 0x%08x", - dut.block8_reg, dut.block9_reg, dut.block10_reg, dut.block11_reg); - $display("block12 = 0x%08x, block13 = 0x%08x, block14 = 0x%08x, block15 = 0x%08x", - dut.block12_reg, dut.block13_reg, dut.block14_reg, dut.block15_reg); - $display(""); - - $display("Digest:"); - $display("digest = 0x%064x", dut.digest_reg); - $display(""); - - end - endtask // dump_dut_state - - - //---------------------------------------------------------------- - // reset_dut() - // - // Toggles reset to force the DUT into a well defined state. - //---------------------------------------------------------------- - task reset_dut(); - begin - $display("*** Toggle reset."); - tb_reset = 1; - #(4 * CLK_HALF_PERIOD); - tb_reset = 0; - end - endtask // reset_dut - - - //---------------------------------------------------------------- - // init_sim() - // - // Initialize all counters and testbed functionality as well - // as setting the DUT inputs to defined values. - //---------------------------------------------------------------- - task init_sim(); - begin - cycle_ctr = 32'h00000000; - error_ctr = 32'h00000000; - tc_ctr = 32'h00000000; - - tb_clk = 0; - tb_reset = 0; - tb_cs = 0; - tb_write_read = 0; - tb_address = 6'h00; - tb_data_in = 32'h00000000; - end - endtask // init_dut - - - //---------------------------------------------------------------- - // display_test_result() - // - // Display the accumulated test results. - //---------------------------------------------------------------- - task display_test_result(); - begin - if (error_ctr == 0) - begin - $display("*** All %02d test cases completed successfully.", tc_ctr); - end - else - begin - $display("*** %02d test cases completed.", tc_ctr); - $display("*** %02d errors detected during testing.", error_ctr); - end - end - endtask // display_test_result - - - //---------------------------------------------------------------- - // wait_ready() - // - // Wait for the ready flag in the dut to be set. - // (Actually we wait for either ready or valid to be set.) - // - // Note: It is the callers responsibility to call the function - // when the dut is actively processing and will in fact at some - // point set the flag. - //---------------------------------------------------------------- - task wait_ready(); - begin - read_data = 0; - - while (read_data == 0) - begin - read_word(ADDR_STATUS); - end - end - endtask // wait_ready - - - //---------------------------------------------------------------- - // write_word() - // - // Write the given word to the DUT using the DUT interface. - //---------------------------------------------------------------- - task write_word(input [7 : 0] address, - input [31 : 0] word); - begin - if (DEBUG) - begin - $display("*** Writing 0x%08x to 0x%02x.", word, address); - $display(""); - end - - tb_address = address; - tb_data_in = word; - tb_cs = 1; - tb_write_read = 1; - #(2 * CLK_HALF_PERIOD); - tb_cs = 0; - tb_write_read = 0; - end - endtask // write_word - - - //---------------------------------------------------------------- - // write_block() - // - // Write the given block to the dut. - //---------------------------------------------------------------- - task write_block(input [511 : 0] block); - begin - write_word(ADDR_BLOCK0, block[511 : 480]); - write_word(ADDR_BLOCK1, block[479 : 448]); - write_word(ADDR_BLOCK2, block[447 : 416]); - write_word(ADDR_BLOCK3, block[415 : 384]); - write_word(ADDR_BLOCK4, block[383 : 352]); - write_word(ADDR_BLOCK5, block[351 : 320]); - write_word(ADDR_BLOCK6, block[319 : 288]); - write_word(ADDR_BLOCK7, block[287 : 256]); - write_word(ADDR_BLOCK8, block[255 : 224]); - write_word(ADDR_BLOCK9, block[223 : 192]); - write_word(ADDR_BLOCK10, block[191 : 160]); - write_word(ADDR_BLOCK11, block[159 : 128]); - write_word(ADDR_BLOCK12, block[127 : 96]); - write_word(ADDR_BLOCK13, block[95 : 64]); - write_word(ADDR_BLOCK14, block[63 : 32]); - write_word(ADDR_BLOCK15, block[31 : 0]); - end - endtask // write_block - - - //---------------------------------------------------------------- - // read_word() - // - // Read a data word from the given address in the DUT. - // the word read will be available in the global variable - // read_data. - //---------------------------------------------------------------- - task read_word(input [7 : 0] address); - begin - tb_address = address; - tb_cs = 1; - tb_write_read = 0; - #(2 * CLK_HALF_PERIOD); - read_data = tb_data_out; - tb_cs = 0; - - if (DEBUG) - begin - $display("*** Reading 0x%08x from 0x%02x.", read_data, address); - $display(""); - end - end - endtask // read_word - - - //---------------------------------------------------------------- - // check_name_version() - // - // Read the name and version from the DUT. - //---------------------------------------------------------------- - task check_name_version(); - reg [31 : 0] name0; - reg [31 : 0] name1; - reg [31 : 0] version; - begin - - read_word(ADDR_NAME0); - name0 = read_data; - read_word(ADDR_NAME1); - name1 = read_data; - read_word(ADDR_VERSION); - version = read_data; - - $display("DUT name: %c%c%c%c%c%c%c%c", - name0[31 : 24], name0[23 : 16], name0[15 : 8], name0[7 : 0], - name1[31 : 24], name1[23 : 16], name1[15 : 8], name1[7 : 0]); - $display("DUT version: %c%c%c%c", - version[31 : 24], version[23 : 16], version[15 : 8], version[7 : 0]); - end - endtask // check_name_version - - - //---------------------------------------------------------------- - // read_digest() - // - // Read the digest in the dut. The resulting digest will be - // available in the global variable digest_data. - //---------------------------------------------------------------- - task read_digest(); - begin - read_word(ADDR_DIGEST0); - digest_data[255 : 224] = read_data; - read_word(ADDR_DIGEST1); - digest_data[223 : 192] = read_data; - read_word(ADDR_DIGEST2); - digest_data[191 : 160] = read_data; - read_word(ADDR_DIGEST3); - digest_data[159 : 128] = read_data; - read_word(ADDR_DIGEST4); - digest_data[127 : 96] = read_data; - read_word(ADDR_DIGEST5); - digest_data[95 : 64] = read_data; - read_word(ADDR_DIGEST6); - digest_data[63 : 32] = read_data; - read_word(ADDR_DIGEST7); - digest_data[31 : 0] = read_data; - end - endtask // read_digest - - - //---------------------------------------------------------------- - // single_block_test() - // - // - // Perform test of a single block digest. - //---------------------------------------------------------------- - task single_block_test([511 : 0] block, - [255 : 0] expected); - begin - $display("*** TC%01d - Single block test started.", tc_ctr); - - write_block(block); - write_word(ADDR_CTRL, CTRL_INIT_VALUE); - write_word(ADDR_CTRL, 8'h00); - wait_ready(); - read_digest(); - - if (digest_data == expected) - begin - $display("TC%01d: OK.", tc_ctr); - end - else - begin - $display("TC%01d: ERROR.", tc_ctr); - $display("TC%01d: Expected: 0x%064x", tc_ctr, expected); - $display("TC%01d: Got: 0x%064x", tc_ctr, digest_data); - error_ctr = error_ctr + 1; - end - $display("*** TC%01d - Single block test done.", tc_ctr); - tc_ctr = tc_ctr + 1; - end - endtask // single_block_test - - - //---------------------------------------------------------------- - // double_block_test() - // - // - // Perform test of a double block digest. Note that we check - // the digests for both the first and final block. - //---------------------------------------------------------------- - task double_block_test([511 : 0] block0, - [255 : 0] expected0, - [511 : 0] block1, - [255 : 0] expected1 - ); - begin - $display("*** TC%01d - Double block test started.", tc_ctr); - - // First block - write_block(block0); - write_word(ADDR_CTRL, CTRL_INIT_VALUE); - write_word(ADDR_CTRL, 8'h00); - wait_ready(); - read_digest(); - - if (digest_data == expected0) - begin - $display("TC%01d first block: OK.", tc_ctr); - end - else - begin - $display("TC%01d: ERROR in first digest", tc_ctr); - $display("TC%01d: Expected: 0x%064x", tc_ctr, expected0); - $display("TC%01d: Got: 0x%064x", tc_ctr, digest_data); - error_ctr = error_ctr + 1; - end - - // Final block - write_block(block1); - write_word(ADDR_CTRL, CTRL_NEXT_VALUE); - write_word(ADDR_CTRL, 8'h00); - wait_ready(); - read_digest(); - - if (digest_data == expected1) - begin - $display("TC%01d final block: OK.", tc_ctr); - end - else - begin - $display("TC%01d: ERROR in final digest", tc_ctr); - $display("TC%01d: Expected: 0x%064x", tc_ctr, expected1); - $display("TC%01d: Got: 0x%064x", tc_ctr, digest_data); - error_ctr = error_ctr + 1; - end - - $display("*** TC%01d - Double block test done.", tc_ctr); - tc_ctr = tc_ctr + 1; - end - endtask // double_block_test - - - //---------------------------------------------------------------- - // wb_sha256_test - // - // The main test functionality. - // - // Test cases taken from: - // http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/SHA256.pdf - //---------------------------------------------------------------- - initial - begin : wb_sha256_test - reg [511 : 0] tc0; - reg [255 : 0] res0; - - reg [511 : 0] tc1_0; - reg [255 : 0] res1_0; - reg [511 : 0] tc1_1; - reg [255 : 0] res1_1; - - $display(" -- Testbench for wb_sha256 started --"); - - init_sim(); - reset_dut(); - check_name_version(); - - // dump_dut_state(); - // write_word(ADDR_BLOCK0, 32'hdeadbeef); - // dump_dut_state(); - // read_word(ADDR_BLOCK0); - // dump_dut_state(); - - tc0 = 512'h61626380000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000018; - res0 = 256'hBA7816BF8F01CFEA414140DE5DAE2223B00361A396177A9CB410FF61F20015AD; - single_block_test(tc0, res0); - - tc1_0 = 512'h6162636462636465636465666465666765666768666768696768696A68696A6B696A6B6C6A6B6C6D6B6C6D6E6C6D6E6F6D6E6F706E6F70718000000000000000; - res1_0 = 256'h85E655D6417A17953363376A624CDE5C76E09589CAC5F811CC4B32C1F20E533A; - tc1_1 = 512'h000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001C0; - res1_1 = 256'h248D6A61D20638B8E5C026930C3E6039A33CE45964FF2167F6ECEDD419DB06C1; - double_block_test(tc1_0, res1_0, tc1_1, res1_1); - - display_test_result(); - - $display(" -- Testbench for wb_sha256 done. --"); - $finish; - end // wb_sha256_test -endmodule // tb_wb_sha256 - -//====================================================================== -// EOF tb_wb_sha256.v -//====================================================================== -- cgit v1.2.3