diff options
| -rw-r--r-- | src/rtl/trng_csprng.v | 16 | ||||
| -rw-r--r-- | src/rtl/trng_csprng_fifo.v | 14 | ||||
| -rw-r--r-- | src/tb/tb_csprng.v | 17 | ||||
| -rw-r--r-- | src/tb/tb_csprng_fifo.v | 38 | ||||
| -rw-r--r-- | src/tb/tb_mixer.v | 15 | ||||
| -rw-r--r-- | src/tb/tb_trng.v | 15 |
6 files changed, 39 insertions, 76 deletions
diff --git a/src/rtl/trng_csprng.v b/src/rtl/trng_csprng.v index c682f27..85039ad 100644 --- a/src/rtl/trng_csprng.v +++ b/src/rtl/trng_csprng.v @@ -277,17 +277,17 @@ module trng_csprng( // All registers are positive edge triggered with synchronous // active low reset. All registers have write enable. //---------------------------------------------------------------- - always @ (posedge clk or negedge reset_n) + always @ (posedge clk) begin if (!reset_n) begin - cipher_key_reg <= {8{32'h00000000}}; - cipher_iv_reg <= {2{32'h00000000}}; - cipher_ctr_reg <= {2{32'h00000000}}; - cipher_block_reg <= {16{32'h00000000}}; - block_ctr_reg <= {2{32'h00000000}}; - block_stat_ctr_reg <= {2{32'h00000000}}; - reseed_stat_ctr_reg <= 32'h00000000; + cipher_key_reg <= {256'h0}; + cipher_iv_reg <= {64'h0}; + cipher_ctr_reg <= {64'h0}; + cipher_block_reg <= {512'h0}; + block_ctr_reg <= {64'h00}; + block_stat_ctr_reg <= {64'h0}; + reseed_stat_ctr_reg <= 32'h0; more_seed_reg <= 0; seed_ack_reg <= 0; ready_reg <= 0; diff --git a/src/rtl/trng_csprng_fifo.v b/src/rtl/trng_csprng_fifo.v index db0a1be..a58af0a 100644 --- a/src/rtl/trng_csprng_fifo.v +++ b/src/rtl/trng_csprng_fifo.v @@ -57,7 +57,7 @@ module trng_csprng_fifo( // Internal constant and parameter definitions. //---------------------------------------------------------------- localparam FIFO_ADDR_BITS = 2; - localparam FIFO_ADDR_MAX = (2**FIFO_ADDR_BITS) - 1; + localparam FIFO_ADDR_MAX = (2 ** FIFO_ADDR_BITS) - 1; localparam FIFO_MAX = (2 ** FIFO_ADDR_BITS); localparam WR_IDLE = 0; @@ -141,19 +141,19 @@ module trng_csprng_fifo( // // Register update. All registers have asynchronous reset. //---------------------------------------------------------------- - always @ (posedge clk or negedge reset_n) + always @ (posedge clk) begin if (!reset_n) begin - fifo_mem[00] <= {16{32'h00000000}}; - fifo_mem[01] <= {16{32'h00000000}}; - fifo_mem[02] <= {16{32'h00000000}}; - fifo_mem[03] <= {16{32'h00000000}}; + fifo_mem[00] <= {512'h0}; + fifo_mem[01] <= {512'h0}; + fifo_mem[02] <= {512'h0}; + fifo_mem[03] <= {512'h0}; mux_data_ptr_reg <= 4'h0; rd_ptr_reg <= {(FIFO_ADDR_BITS){1'b0}}; wr_ptr_reg <= {(FIFO_ADDR_BITS){1'b0}}; fifo_ctr_reg <= {FIFO_ADDR_BITS{1'b0}}; - rnd_data_reg <= 32'h00000000; + rnd_data_reg <= 32'h0; rnd_syn_reg <= 0; more_data_reg <= 0; wr_ctrl_reg <= WR_IDLE; diff --git a/src/tb/tb_csprng.v b/src/tb/tb_csprng.v index 3b4d787..7c8772c 100644 --- a/src/tb/tb_csprng.v +++ b/src/tb/tb_csprng.v @@ -37,11 +37,6 @@ // //====================================================================== -//------------------------------------------------------------------ -// Simulator directives. -//------------------------------------------------------------------ -`timescale 1ns/100ps - //------------------------------------------------------------------ // Test module. @@ -178,7 +173,7 @@ module tb_csprng(); // // Dump the state of the dump when needed. //---------------------------------------------------------------- - task dump_dut_state(); + task dump_dut_state; begin $display("cycle: 0x%016x", cycle_ctr); $display("State of DUT"); @@ -272,7 +267,7 @@ module tb_csprng(); // // Toggle reset to put the DUT into a well known state. //---------------------------------------------------------------- - task reset_dut(); + task reset_dut; begin $display("*** Toggle reset."); tb_reset_n = 0; @@ -289,7 +284,7 @@ module tb_csprng(); // // Display the accumulated test results. //---------------------------------------------------------------- - task display_test_results(); + task display_test_results; begin if (error_ctr == 0) begin @@ -310,7 +305,7 @@ module tb_csprng(); // Initialize all counters and testbed functionality as well // as setting the DUT inputs to defined values. //---------------------------------------------------------------- - task init_sim(); + task init_sim; begin cycle_ctr = 0; error_ctr = 0; @@ -396,7 +391,7 @@ module tb_csprng(); // enable is set. We also starts pulling random data from the // csprng to see that it actually emits data as expected. //---------------------------------------------------------------- - task tc1_init_csprng(); + task tc1_init_csprng; begin tc_ctr = tc_ctr + 1; @@ -419,7 +414,7 @@ module tb_csprng(); // TC2: Test that the CSPRNG is reseeded as expected. // We set the max block size to a small value and pull data. //---------------------------------------------------------------- - task tc2_reseed_csprng(); + task tc2_reseed_csprng; begin tc_ctr = tc_ctr + 1; diff --git a/src/tb/tb_csprng_fifo.v b/src/tb/tb_csprng_fifo.v index a2db466..db598f5 100644 --- a/src/tb/tb_csprng_fifo.v +++ b/src/tb/tb_csprng_fifo.v @@ -36,11 +36,6 @@ // //====================================================================== -//------------------------------------------------------------------ -// Simulator directives. -//------------------------------------------------------------------ -`timescale 1ns/100ps - //------------------------------------------------------------------ // Test module. @@ -138,7 +133,7 @@ module tb_csprng_fifo(); // // Dump the state of the dump when needed. //---------------------------------------------------------------- - task dump_dut_state(); + task dump_dut_state; begin $display("cycle: 0x%016x", cycle_ctr); $display("State of DUT"); @@ -166,7 +161,7 @@ module tb_csprng_fifo(); // // Dump the state of the fifo when needed. //---------------------------------------------------------------- - task dump_fifo(); + task dump_fifo; begin $display("contents of the fifo"); $display("--------------------"); @@ -181,28 +176,11 @@ module tb_csprng_fifo(); //---------------------------------------------------------------- - // gen_csprng_data - // - // Generate test data with distinct patterns as requested - // by the dut. - //---------------------------------------------------------------- -// always @ (posedge tb_more_data) -// begin -// for (i = 0 ; i < 16 ; i = i + 1) -// tb_csprng_data[i * 32 +: 32] = tb_csprng_data[i * 32 +: 32] + 32'h10101010; -// -// tb_csprng_data_valid = 1'b1; -// #(2 * CLK_PERIOD); -// tb_csprng_data_valid = 1'b0; -// end - - - //---------------------------------------------------------------- // reset_dut() // // Toggle reset to put the DUT into a well known state. //---------------------------------------------------------------- - task reset_dut(); + task reset_dut; begin $display("*** Toggle reset."); tb_reset_n = 0; @@ -219,7 +197,7 @@ module tb_csprng_fifo(); // // Display the accumulated test results. //---------------------------------------------------------------- - task display_test_results(); + task display_test_results; begin if (error_ctr == 0) begin @@ -240,7 +218,7 @@ module tb_csprng_fifo(); // Initialize all counters and testbed functionality as well // as setting the DUT inputs to defined values. //---------------------------------------------------------------- - task init_sim(); + task init_sim; begin cycle_ctr = 0; error_ctr = 0; @@ -269,7 +247,7 @@ module tb_csprng_fifo(); // // Wait for the DUT to signal that it wants more data. //---------------------------------------------------------------- - task wait_more_data(); + task wait_more_data; begin while (!tb_more_data) #(CLK_PERIOD); @@ -341,7 +319,7 @@ module tb_csprng_fifo(); // // read a 32 bit data word from the fifo. //---------------------------------------------------------------- - task read_w32(); + task read_w32; begin $display("*** Reading from the fifo: 0x%08x", tb_rnd_data); tb_rnd_ack = 1; @@ -359,7 +337,7 @@ module tb_csprng_fifo(); // extracts 32-bit words and checks that we get the correct // words all the time. //---------------------------------------------------------------- - task fifo_test(); + task fifo_test; reg [7 : 0] i; reg [7 : 0] j; diff --git a/src/tb/tb_mixer.v b/src/tb/tb_mixer.v index 3964197..3713965 100644 --- a/src/tb/tb_mixer.v +++ b/src/tb/tb_mixer.v @@ -36,11 +36,6 @@ // //====================================================================== -//------------------------------------------------------------------ -// Simulator directives. -//------------------------------------------------------------------ -`timescale 1ns/100ps - //------------------------------------------------------------------ // Test module. @@ -178,7 +173,7 @@ module tb_mixer(); // // Dump the state of the dump when needed. //---------------------------------------------------------------- - task dump_dut_state(); + task dump_dut_state; begin $display("cycle: 0x%016x", cycle_ctr); $display("State of DUT"); @@ -243,7 +238,7 @@ module tb_mixer(); // // Toggle reset to put the DUT into a well known state. //---------------------------------------------------------------- - task reset_dut(); + task reset_dut; begin $display("*** Toggle reset."); tb_reset_n = 0; @@ -260,7 +255,7 @@ module tb_mixer(); // // Display the accumulated test results. //---------------------------------------------------------------- - task display_test_results(); + task display_test_results; begin if (error_ctr == 0) begin @@ -281,7 +276,7 @@ module tb_mixer(); // Initialize all counters and testbed functionality as well // as setting the DUT inputs to defined values. //---------------------------------------------------------------- - task init_sim(); + task init_sim; begin cycle_ctr = 0; error_ctr = 0; @@ -321,7 +316,7 @@ module tb_mixer(); // A simple first testcase that tries to make the DUT generate // a number of seeds based on entropy from source 0 and 2. //---------------------------------------------------------------- - task tc1_gen_seeds(); + task tc1_gen_seeds; begin $display("*** Starting TC1: Setting continious seed generation."); tb_entropy0_enabled = 1; diff --git a/src/tb/tb_trng.v b/src/tb/tb_trng.v index 38d2559..27097bc 100644 --- a/src/tb/tb_trng.v +++ b/src/tb/tb_trng.v @@ -36,11 +36,6 @@ // //====================================================================== -//------------------------------------------------------------------ -// Simulator directives. -//------------------------------------------------------------------ -`timescale 1ns/100ps - //------------------------------------------------------------------ // Test module. @@ -182,7 +177,7 @@ module tb_trng(); // // Dump the state of the dump when needed. //---------------------------------------------------------------- - task dump_dut_state(); + task dump_dut_state; begin $display("cycle: 0x%016x", cycle_ctr); $display("State of DUT"); @@ -247,7 +242,7 @@ module tb_trng(); // // Toggle reset to put the DUT into a well known state. //---------------------------------------------------------------- - task reset_dut(); + task reset_dut; begin $display("*** Toggle reset."); tb_reset_n = 0; @@ -264,7 +259,7 @@ module tb_trng(); // // Display the accumulated test results. //---------------------------------------------------------------- - task display_test_results(); + task display_test_results; begin if (error_ctr == 0) begin @@ -285,7 +280,7 @@ module tb_trng(); // Initialize all counters and testbed functionality as well // as setting the DUT inputs to defined values. //---------------------------------------------------------------- - task init_sim(); + task init_sim; begin cycle_ctr = 0; error_ctr = 0; @@ -310,7 +305,7 @@ module tb_trng(); // A simple first testcase that tries to make the DUT generate // a number of random values. //---------------------------------------------------------------- - task tc1_gen_rnd(); + task tc1_gen_rnd; reg [31 : 0] i; begin |