From e7763f95ceaee327c96a22ce958c6340ec61ee92 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Joachim=20Stro=CC=88mbergson?= Date: Fri, 21 Feb 2014 20:01:15 +0100 Subject: Adding all testbenches. --- src/tb/tb_sha1.v | 496 +++++++++++++++++++++++++++++++++++++++++++++++++ src/tb/tb_sha1_core.v | 386 ++++++++++++++++++++++++++++++++++++++ src/tb/tb_sha1_w_mem.v | 328 ++++++++++++++++++++++++++++++++ 3 files changed, 1210 insertions(+) create mode 100644 src/tb/tb_sha1.v create mode 100644 src/tb/tb_sha1_core.v create mode 100644 src/tb/tb_sha1_w_mem.v (limited to 'src/tb') diff --git a/src/tb/tb_sha1.v b/src/tb/tb_sha1.v new file mode 100644 index 0000000..632b4e9 --- /dev/null +++ b/src/tb/tb_sha1.v @@ -0,0 +1,496 @@ +//====================================================================== +// +// tb_sha1.v +// --------- +// Testbench for the SHA-1 top level 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 + +module tb_sha1(); + + //---------------------------------------------------------------- + // Internal constant and parameter definitions. + //---------------------------------------------------------------- + parameter DEBUG = 0; + + parameter CLK_HALF_PERIOD = 2; + + 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_NEXT_BIT = 1; + parameter CTRL_INIT_VALUE = 8'h01; + 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; + + + //---------------------------------------------------------------- + // 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_n; + 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 [159 : 0] digest_data; + + + //---------------------------------------------------------------- + // Device Under Test. + //---------------------------------------------------------------- + sha1 dut( + .clk(tb_clk), + .reset_n(tb_reset_n), + + .cs(tb_cs), + .write_read(tb_write_read), + + .address(tb_address), + .data_in(tb_data_in), + .data_out(tb_data_out) + ); + + + //---------------------------------------------------------------- + // clk_gen + // + // Clock generator process. + //---------------------------------------------------------------- + always + begin : clk_gen + #CLK_HALF_PERIOD tb_clk = !tb_clk; + end // clk_gen + + + //---------------------------------------------------------------- + // sys_monitor + //---------------------------------------------------------------- + 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 + end + endtask // dump_dut_state + + + //---------------------------------------------------------------- + // reset_dut() + //---------------------------------------------------------------- + task reset_dut(); + begin + $display("*** Toggle reset."); + tb_reset_n = 0; + #(4 * CLK_HALF_PERIOD); + tb_reset_n = 1; + 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_n = 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 + + + //---------------------------------------------------------------- + // 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 + + + //---------------------------------------------------------------- + // 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 + + + //---------------------------------------------------------------- + // 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[159 : 128] = read_data; + read_word(ADDR_DIGEST1); + digest_data[127 : 96] = read_data; + read_word(ADDR_DIGEST2); + digest_data[95 : 64] = read_data; + read_word(ADDR_DIGEST3); + digest_data[63 : 32] = read_data; + read_word(ADDR_DIGEST4); + 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, + [159 : 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%040x", tc_ctr, expected); + $display("TC%01d: Got: 0x%040x", 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, + [159 : 0] expected0, + [511 : 0] block1, + [159 : 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%040x", tc_ctr, expected0); + $display("TC%01d: Got: 0x%040x", 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%040x", tc_ctr, expected1); + $display("TC%01d: Got: 0x%040x", 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 + + + //---------------------------------------------------------------- + // sha1_test + // The main test functionality. + //---------------------------------------------------------------- + initial + begin : sha1_test + reg [511 : 0] tc1; + reg [159 : 0] res1; + + reg [511 : 0] tc2_1; + reg [159 : 0] res2_1; + reg [511 : 0] tc2_2; + reg [159 : 0] res2_2; + + $display(" -- Testbench for sha1 started --"); + + init_sim(); + reset_dut(); + check_name_version(); + + // TC1: Single block message: "abc". + tc1 = 512'h61626380000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000018; + res1 = 160'ha9993e364706816aba3e25717850c26c9cd0d89d; + single_block_test(tc1, res1); + + // TC2: Double block message. + // "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" + tc2_1 = 512'h6162636462636465636465666465666765666768666768696768696A68696A6B696A6B6C6A6B6C6D6B6C6D6E6C6D6E6F6D6E6F706E6F70718000000000000000; + res2_1 = 160'hf4286818c37b27ae0408f581846771484a566572; + + tc2_2 = 512'h000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001C0; + res2_2 = 160'h84983e441c3bd26ebaae4aa1f95129e5e54670f1; + double_block_test(tc2_1, res2_1, tc2_2, res2_2); + + display_test_result(); + $display("*** Simulation done. ***"); + $finish; + end // sha1_test +endmodule // tb_sha1 + +//====================================================================== +// EOF tb_sha1.v +//====================================================================== + diff --git a/src/tb/tb_sha1_core.v b/src/tb/tb_sha1_core.v new file mode 100644 index 0000000..8a5d11b --- /dev/null +++ b/src/tb/tb_sha1_core.v @@ -0,0 +1,386 @@ +//====================================================================== +// +// tb_sha1_core.v +// ---------------- +// Testbench for the SHA-1 core. +// +// +// 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 + +module tb_sha1_core(); + + //---------------------------------------------------------------- + // Internal constant and parameter definitions. + //---------------------------------------------------------------- + parameter DEBUG = 0; + + parameter CLK_HALF_PERIOD = 2; + + + //---------------------------------------------------------------- + // 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_n; + reg tb_init; + reg tb_next; + reg [511 : 0] tb_block; + wire tb_ready; + wire [159 : 0] tb_digest; + wire tb_digest_valid; + + + + //---------------------------------------------------------------- + // Device Under Test. + //---------------------------------------------------------------- + sha1_core dut( + .clk(tb_clk), + .reset_n(tb_reset_n), + + .init(tb_init), + .next(tb_next), + + .block(tb_block), + + .ready(tb_ready), + + .digest(tb_digest), + .digest_valid(tb_digest_valid) + ); + + + //---------------------------------------------------------------- + // clk_gen + // + // Clock generator process. + //---------------------------------------------------------------- + always + begin : clk_gen + #CLK_HALF_PERIOD tb_clk = !tb_clk; + end // clk_gen + + + //---------------------------------------------------------------- + // sys_monitor + //---------------------------------------------------------------- + always + begin : sys_monitor + #(2 * CLK_HALF_PERIOD); + if (DEBUG) + begin + dump_dut_state(); + end + 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("init = 0x%01x, next = 0x%01x", + dut.init, dut.next); + $display("block = 0x%0128x", dut.block); + + $display("ready = 0x%01x, valid = 0x%01x", + dut.ready, dut.digest_valid); + $display("digest = 0x%040x", dut.digest); + $display("H0_reg = 0x%08x, H1_reg = 0x%08x, H2_reg = 0x%08x, H3_reg = 0x%08x, H4_reg = 0x%08x", + dut.H0_reg, dut.H1_reg, dut.H2_reg, dut.H3_reg, dut.H4_reg); + $display(""); + + $display("Control signals and counter:"); + $display("sha1_ctrl_reg = 0x%01x", dut.sha1_ctrl_reg); + $display("digest_init = 0x%01x, digest_update = 0x%01x", + dut.digest_init, dut.digest_update); + $display("state_init = 0x%01x, state_update = 0x%01x", + dut.state_init, dut.state_update); + $display("first_block = 0x%01x, ready_flag = 0x%01x, w_init = 0x%01x", + dut.first_block, dut.ready_flag, dut.w_init); + $display("round_ctr_inc = 0x%01x, round_ctr_rst = 0x%01x, round_ctr_reg = 0x%02x", + dut.round_ctr_inc, dut.round_ctr_rst, dut.round_ctr_reg); + $display(""); + + $display("State registers:"); + $display("a_reg = 0x%08x, b_reg = 0x%08x, c_reg = 0x%08x, d_reg = 0x%08x, e_reg = 0x%08x", + dut.a_reg, dut.b_reg, dut.c_reg, dut.d_reg, dut.e_reg); + $display("a_new = 0x%08x, b_new = 0x%08x, c_new = 0x%08x, d_new = 0x%08x, e_new = 0x%08x", + dut.a_new, dut.b_new, dut.c_new, dut.d_new, dut.e_new); + $display(""); + + $display("State update values:"); + $display("f = 0x%08x, k = 0x%08x, t = 0x%08x, w = 0x%08x,", + dut.state_logic.f, dut.state_logic.k, dut.state_logic.t, dut.w); + $display(""); + end + endtask // dump_dut_state + + + //---------------------------------------------------------------- + // reset_dut() + //---------------------------------------------------------------- + task reset_dut(); + begin + $display("*** Toggle reset."); + tb_reset_n = 0; + #(4 * CLK_HALF_PERIOD); + tb_reset_n = 1; + 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 + error_ctr = 0; + tc_ctr = 0; + + tb_clk = 0; + tb_reset_n = 1; + + tb_init = 0; + tb_next = 0; + tb_block = 512'h00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000; + 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 did not complete successfully.", error_ctr); + end + end + endtask // display_test_result + + + //---------------------------------------------------------------- + // wait_ready() + // + // Wait for the ready flag in the dut 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 + while (!tb_ready) + begin + #(2 * CLK_HALF_PERIOD); + + end + end + endtask // wait_ready + + + //---------------------------------------------------------------- + // single_block_test + // + // Test a message of at most one block. + //---------------------------------------------------------------- + task single_block_test(input [7 : 0] tc_number, + input [511 : 0] block, + input [159 : 0] expected); + begin + $display("*** TC %0d single block test case started.", tc_number); + tc_ctr = tc_ctr + 1; + + tb_block = block; + tb_init = 1; + #(2 * CLK_HALF_PERIOD); + tb_init = 0; + wait_ready(); + + + if (tb_digest == expected) + begin + $display("*** TC %0d successful.", tc_number); + $display(""); + end + else + begin + $display("*** ERROR: TC %0d NOT successful.", tc_number); + $display("Expected: 0x%040x", expected); + $display("Got: 0x%040x", tb_digest); + $display(""); + + error_ctr = error_ctr + 1; + end + end + endtask // single_block_test + + + //---------------------------------------------------------------- + // double_block_test + // + // Test message consisting of two blocks. + //---------------------------------------------------------------- + task double_block_test(input [7 : 0] tc_number, + input [511 : 0] block1, + input [159 : 0] expected1, + input [511 : 0] block2, + input [159 : 0] expected2); + + reg [159 : 0] db_digest1; + reg db_error; + begin + $display("*** TC %0d double block test case started.", tc_number); + db_error = 0; + tc_ctr = tc_ctr + 1; + + $display("*** TC %0d first block started.", tc_number); + tb_block = block1; + tb_init = 1; + #(2 * CLK_HALF_PERIOD); + tb_init = 0; + wait_ready(); + db_digest1 = tb_digest; + $display("*** TC %0d first block done.", tc_number); + + $display("*** TC %0d second block started.", tc_number); + tb_block = block2; + tb_next = 1; + #(2 * CLK_HALF_PERIOD); + tb_next = 0; + wait_ready(); + $display("*** TC %0d second block done.", tc_number); + + if (db_digest1 == expected1) + begin + $display("*** TC %0d first block successful", tc_number); + $display(""); + end + else + begin + $display("*** ERROR: TC %0d first block NOT successful", tc_number); + $display("Expected: 0x%040x", expected1); + $display("Got: 0x%040x", db_digest1); + $display(""); + db_error = 1; + end + + if (db_digest1 == expected1) + begin + $display("*** TC %0d second block successful", tc_number); + $display(""); + end + else + begin + $display("*** ERROR: TC %0d second block NOT successful", tc_number); + $display("Expected: 0x%040x", expected2); + $display("Got: 0x%040x", tb_digest); + $display(""); + db_error = 1; + end + + if (db_error) + begin + error_ctr = error_ctr + 1; + end + end + endtask // double_block_test + + + //---------------------------------------------------------------- + // sha1_core_test + // The main test functionality. + //---------------------------------------------------------------- + initial + begin : sha1_core_test + reg [511 : 0] tc1; + reg [159 : 0] res1; + + reg [511 : 0] tc2_1; + reg [159 : 0] res2_1; + reg [511 : 0] tc2_2; + reg [159 : 0] res2_2; + + $display(" -- Testbench for sha1 core started --"); + + init_sim(); + dump_dut_state(); + reset_dut(); + dump_dut_state(); + + // TC1: Single block message: "abc". + tc1 = 512'h61626380000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000018; + res1 = 160'ha9993e364706816aba3e25717850c26c9cd0d89d; + single_block_test(1, tc1, res1); + + // TC2: Double block message. + // "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" + tc2_1 = 512'h6162636462636465636465666465666765666768666768696768696A68696A6B696A6B6C6A6B6C6D6B6C6D6E6C6D6E6F6D6E6F706E6F70718000000000000000; + res2_1 = 160'hf4286818c37b27ae0408f581846771484a566572; + + tc2_2 = 512'h000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001C0; + res2_2 = 160'h84983e441c3bd26ebaae4aa1f95129e5e54670f1; + double_block_test(2, tc2_1, res2_1, tc2_2, res2_2); + + display_test_result(); + $display("*** Simulation done."); + $finish; + end // sha1_core_test +endmodule // tb_sha1_core + +//====================================================================== +// EOF tb_sha1_core.v +//====================================================================== diff --git a/src/tb/tb_sha1_w_mem.v b/src/tb/tb_sha1_w_mem.v new file mode 100644 index 0000000..233e409 --- /dev/null +++ b/src/tb/tb_sha1_w_mem.v @@ -0,0 +1,328 @@ +//====================================================================== +// +// Tb_sha1_w_mem.v +// --------------- +// Testbench for the SHA-1 W memory module. +// This testbench is currently not self testing. +// +// +// 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 + +module tb_sha1_w_mem(); + + + //---------------------------------------------------------------- + // Internal constant and parameter definitions. + //---------------------------------------------------------------- + parameter DEBUG = 1; + parameter DISPLAY_CYCLES = 0; + + parameter CLK_HALF_PERIOD = 2; + + + //---------------------------------------------------------------- + // Registers including update variables and write enable. + //---------------------------------------------------------------- + + + //---------------------------------------------------------------- + // Wires. + //---------------------------------------------------------------- + reg tb_clk; + reg tb_reset_n; + reg tb_init; + reg [511 : 0] tb_block; + reg [6 : 0] tb_addr; + wire [31 : 0] tb_w; + + reg [63 : 0] cycle_ctr; + reg [31 : 0] error_ctr; + reg [31 : 0] tc_ctr; + + + //---------------------------------------------------------------- + // Device Under Test. + //---------------------------------------------------------------- + sha1_w_mem dut( + .clk(tb_clk), + .reset_n(tb_reset_n), + + .init(tb_init), + .block(tb_block), + + .addr(tb_addr), + .w(tb_w) + ); + + + //---------------------------------------------------------------- + // clk_gen + // + // Clock generator process. + //---------------------------------------------------------------- + always + begin : clk_gen + #CLK_HALF_PERIOD tb_clk = !tb_clk; + end // clk_gen + + + //-------------------------------------------------------------------- + // dut_monitor + // + // Monitor displaying information every cycle. + // Includes the cycle counter. + //-------------------------------------------------------------------- + always @ (posedge tb_clk) + begin : dut_monitor + cycle_ctr = cycle_ctr + 1; + + if (DISPLAY_CYCLES) + begin + $display("cycle = %016x:", cycle_ctr); + end + + if (DEBUG) + begin + $display("addr: 0x%02x:", dut.addr); + $display("addr4: 0x%02x:", dut.addr[3 : 0]); + $display("w_mem_new: 0x%08x:", dut.w_mem_new); + $display("w_mem_we: 0x%x:", dut.w_mem_we); + end + end // dut_monitor + + + //---------------------------------------------------------------- + // dump_w_state() + // + // Dump the current state of all W registers. + //---------------------------------------------------------------- + task dump_w_state(); + begin + $display("W state:"); + + $display("w0_reg = %08x, w1_reg = %08x, w2_reg = %08x, w3_reg = %08x", + dut.w_mem[00], dut.w_mem[01], dut.w_mem[02], dut.w_mem[03]); + + $display("w4_reg = %08x, w5_reg = %08x, w6_reg = %08x, w7_reg = %08x", + dut.w_mem[04], dut.w_mem[05], dut.w_mem[06], dut.w_mem[07]); + + $display("w8_reg = %08x, w9_reg = %08x, w10_reg = %08x, w11_reg = %08x", + dut.w_mem[08], dut.w_mem[09], dut.w_mem[10], dut.w_mem[11]); + + $display("w12_reg = %08x, w13_reg = %08x, w14_reg = %08x, w15_reg = %08x", + dut.w_mem[12], dut.w_mem[13], dut.w_mem[14], dut.w_mem[15]); + + $display("w16_reg = %08x, w17_reg = %08x, w18_reg = %08x, w19_reg = %08x", + dut.w_mem[16], dut.w_mem[17], dut.w_mem[18], dut.w_mem[19]); + + $display("w20_reg = %08x, w21_reg = %08x, w22_reg = %08x, w23_reg = %08x", + dut.w_mem[20], dut.w_mem[21], dut.w_mem[22], dut.w_mem[23]); + + $display("w24_reg = %08x, w25_reg = %08x, w26_reg = %08x, w27_reg = %08x", + dut.w_mem[24], dut.w_mem[25], dut.w_mem[26], dut.w_mem[27]); + + $display("w28_reg = %08x, w29_reg = %08x, w30_reg = %08x, w31_reg = %08x", + dut.w_mem[28], dut.w_mem[29], dut.w_mem[30], dut.w_mem[31]); + + $display("w32_reg = %08x, w33_reg = %08x, w34_reg = %08x, w35_reg = %08x", + dut.w_mem[32], dut.w_mem[33], dut.w_mem[34], dut.w_mem[35]); + + $display("w36_reg = %08x, w37_reg = %08x, w38_reg = %08x, w39_reg = %08x", + dut.w_mem[36], dut.w_mem[37], dut.w_mem[38], dut.w_mem[39]); + + $display("w40_reg = %08x, w41_reg = %08x, w42_reg = %08x, w43_reg = %08x", + dut.w_mem[40], dut.w_mem[41], dut.w_mem[42], dut.w_mem[43]); + + $display("w44_reg = %08x, w45_reg = %08x, w46_reg = %08x, w47_reg = %08x", + dut.w_mem[44], dut.w_mem[45], dut.w_mem[46], dut.w_mem[47]); + + $display("w48_reg = %08x, w49_reg = %08x, w50_reg = %08x, w51_reg = %08x", + dut.w_mem[48], dut.w_mem[49], dut.w_mem[50], dut.w_mem[51]); + + $display("w52_reg = %08x, w53_reg = %08x, w54_reg = %08x, w55_reg = %08x", + dut.w_mem[52], dut.w_mem[53], dut.w_mem[54], dut.w_mem[55]); + + $display("w56_reg = %08x, w57_reg = %08x, w58_reg = %08x, w59_reg = %08x", + dut.w_mem[56], dut.w_mem[57], dut.w_mem[58], dut.w_mem[59]); + + $display("w60_reg = %08x, w61_reg = %08x, w62_reg = %08x, w63_reg = %08x", + dut.w_mem[60], dut.w_mem[61], dut.w_mem[62], dut.w_mem[63]); + + $display("w64_reg = %08x, w65_reg = %08x, w66_reg = %08x, w67_reg = %08x", + dut.w_mem[64], dut.w_mem[65], dut.w_mem[66], dut.w_mem[67]); + + $display("w68_reg = %08x, w69_reg = %08x, w70_reg = %08x, w71_reg = %08x", + dut.w_mem[68], dut.w_mem[69], dut.w_mem[70], dut.w_mem[71]); + + $display("w72_reg = %08x, w73_reg = %08x, w74_reg = %08x, w75_reg = %08x", + dut.w_mem[72], dut.w_mem[73], dut.w_mem[74], dut.w_mem[75]); + + $display("w76_reg = %08x, w77_reg = %08x, w78_reg = %08x, w79_reg = %08x", + dut.w_mem[76], dut.w_mem[77], dut.w_mem[78], dut.w_mem[79]); + + $display(""); + end + endtask // dump_state + + + //---------------------------------------------------------------- + // reset_dut + //---------------------------------------------------------------- + task reset_dut(); + begin + $display("*** Toggle reset."); + tb_reset_n = 0; + #(4 * CLK_HALF_PERIOD); + tb_reset_n = 1; + end + endtask // reset_dut + + + //---------------------------------------------------------------- + // init_sim + //---------------------------------------------------------------- + task init_sim(); + begin + $display("*** Simulation init."); + tb_clk = 0; + tb_reset_n = 1; + cycle_ctr = 0; + + tb_init = 0; + tb_block = 512'h00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000; + tb_addr = 0; + end + endtask // reset_dut + + + //---------------------------------------------------------------- + // dump_mem() + // + // Dump the contents of the memory by directly reading from + // the registers in the dut, not via the read port. + //---------------------------------------------------------------- + task dump_mem(); + begin + $display("*** Dumping memory:"); + $display("W[00] = 0x%08x", dut.w_mem[00]); + $display("W[01] = 0x%08x", dut.w_mem[01]); + $display("W[02] = 0x%08x", dut.w_mem[02]); + $display("W[03] = 0x%08x", dut.w_mem[03]); + $display("W[04] = 0x%08x", dut.w_mem[04]); + $display("W[05] = 0x%08x", dut.w_mem[05]); + $display("W[06] = 0x%08x", dut.w_mem[06]); + $display("W[07] = 0x%08x", dut.w_mem[07]); + $display("W[08] = 0x%08x", dut.w_mem[08]); + $display("W[09] = 0x%08x", dut.w_mem[09]); + $display("W[10] = 0x%08x", dut.w_mem[10]); + $display("W[11] = 0x%08x", dut.w_mem[11]); + $display("W[12] = 0x%08x", dut.w_mem[12]); + $display("W[13] = 0x%08x", dut.w_mem[13]); + $display("W[14] = 0x%08x", dut.w_mem[14]); + $display("W[15] = 0x%08x", dut.w_mem[15]); + $display(""); + end + endtask // dump_mem + + + //---------------------------------------------------------------- + // test_w_schedule() + // + // Test that W scheduling happens and work correctly. + // Note: Currently not a self checking test case. + //---------------------------------------------------------------- + task test_w_schedule(); + begin + $display("*** Test of W schedule processing. --"); + tb_block = 512'h61626380000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000018; + tb_init = 1; + #(4 * CLK_HALF_PERIOD); + tb_init = 0; + + #(200 * CLK_HALF_PERIOD); + + dump_w_state(); + end + endtask // test_w_schedule + + + //---------------------------------------------------------------- + // test_read_w/( + // + // Test that we can read data from all W registers. + // Note: Currently not a self checking test case. + //---------------------------------------------------------------- + task test_read_w(); + reg [7 : 0] i; + begin + $display("*** Test of W read operations. --"); + i = 0; + while (i < 80) + begin + tb_addr = i; + $display("API: w%02x, internal w%02x = 0x%02x", tb_addr, dut.addr, dut.w_tmp); + i = i + 1; + #(2 * CLK_HALF_PERIOD); + end + end + endtask // read_w + + + //---------------------------------------------------------------- + // The main test functionality. + //---------------------------------------------------------------- + initial + begin : w_mem_test + $display(" -- Testbench for sha1 w memory started --"); + init_sim(); + + dump_mem(); + reset_dut(); + dump_mem(); + + test_w_schedule(); + + test_read_w(); + + $display("*** Simulation done."); + $finish; + end + +endmodule // w_mem_test + +//====================================================================== +// EOF tb_sha1_w_mem.v +//====================================================================== -- cgit v1.2.3