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-rw-r--r--src/rtl/sha1_core.v131
-rw-r--r--src/rtl/sha1_w_mem.v101
-rw-r--r--src/tb/tb_sha1_w_mem.v123
3 files changed, 176 insertions, 179 deletions
diff --git a/src/rtl/sha1_core.v b/src/rtl/sha1_core.v
index aae578c..f38d42f 100644
--- a/src/rtl/sha1_core.v
+++ b/src/rtl/sha1_core.v
@@ -8,30 +8,30 @@
//
// 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,
+//
+// 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
+// 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.
//
//======================================================================
@@ -39,19 +39,19 @@
module sha1_core(
input wire clk,
input wire reset_n,
-
+
input wire init,
input wire next,
input wire [511 : 0] block,
-
+
output wire ready,
-
+
output wire [159 : 0] digest,
output wire digest_valid
);
-
+
//----------------------------------------------------------------
// Internal constant and parameter definitions.
//----------------------------------------------------------------
@@ -62,12 +62,12 @@ module sha1_core(
parameter H0_4 = 32'hc3d2e1f0;
parameter SHA1_ROUNDS = 79;
-
+
parameter CTRL_IDLE = 0;
parameter CTRL_ROUNDS = 1;
parameter CTRL_DONE = 2;
-
-
+
+
//----------------------------------------------------------------
// Registers including update variables and write enable.
//----------------------------------------------------------------
@@ -94,7 +94,7 @@ module sha1_core(
reg [31 : 0] H4_reg;
reg [31 : 0] H4_new;
reg H_we;
-
+
reg [6 : 0] round_ctr_reg;
reg [6 : 0] round_ctr_new;
reg round_ctr_we;
@@ -104,12 +104,12 @@ module sha1_core(
reg digest_valid_reg;
reg digest_valid_new;
reg digest_valid_we;
-
+
reg [1 : 0] sha1_ctrl_reg;
reg [1 : 0] sha1_ctrl_new;
reg sha1_ctrl_we;
-
+
//----------------------------------------------------------------
// Wires.
//----------------------------------------------------------------
@@ -121,34 +121,33 @@ module sha1_core(
reg ready_flag;
reg w_init;
reg w_next;
- wire w_ready;
wire [31 : 0] w;
-
-
+
+
//----------------------------------------------------------------
// Module instantiantions.
//----------------------------------------------------------------
- sha1_w_mem w_mem(
- .clk(clk),
- .reset_n(reset_n),
+ sha1_w_mem w_mem_inst(
+ .clk(clk),
+ .reset_n(reset_n),
+
+ .block(block),
- .block(block),
+ .init(w_init),
+ .next(w_next),
+
+ .w(w)
+ );
- .init(w_init),
- .next(w_next),
-
- .w(w)
- );
-
//----------------------------------------------------------------
// Concurrent connectivity for ports etc.
//----------------------------------------------------------------
assign ready = ready_flag;
assign digest = {H0_reg, H1_reg, H2_reg, H3_reg, H4_reg};
assign digest_valid = digest_valid_reg;
-
-
+
+
//----------------------------------------------------------------
// reg_update
// Update functionality for all registers in the core.
@@ -192,7 +191,7 @@ module sha1_core(
H3_reg <= H3_new;
H4_reg <= H4_new;
end
-
+
if (round_ctr_we)
begin
round_ctr_reg <= round_ctr_new;
@@ -202,7 +201,7 @@ module sha1_core(
begin
digest_valid_reg <= digest_valid_new;
end
-
+
if (sha1_ctrl_we)
begin
sha1_ctrl_reg <= sha1_ctrl_new;
@@ -210,7 +209,7 @@ module sha1_core(
end
end // reg_update
-
+
//----------------------------------------------------------------
// digest_logic
//
@@ -245,8 +244,8 @@ module sha1_core(
H_we = 1;
end
end // digest_logic
-
-
+
+
//----------------------------------------------------------------
// state_logic
//
@@ -270,7 +269,7 @@ module sha1_core(
d_new = 32'h00000000;
e_new = 32'h00000000;
a_e_we = 0;
-
+
if (state_init)
begin
if (first_block)
@@ -292,7 +291,7 @@ module sha1_core(
a_e_we = 1;
end
end
-
+
if (state_update)
begin
if (round_ctr_reg <= 19)
@@ -315,7 +314,7 @@ module sha1_core(
k = 32'hca62c1d6;
f = b_reg ^ c_reg ^ d_reg;
end
-
+
a5 = {a_reg[26 : 0], a_reg[31 : 27]};
t = a5 + e_reg + f + k + w;
@@ -328,18 +327,18 @@ module sha1_core(
end
end // state_logic
-
+
//----------------------------------------------------------------
// round_ctr
//
- // Update logic for the round counter, a monotonically
+ // Update logic for the round counter, a monotonically
// increasing counter with reset.
//----------------------------------------------------------------
always @*
begin : round_ctr
round_ctr_new = 0;
round_ctr_we = 0;
-
+
if (round_ctr_rst)
begin
round_ctr_new = 0;
@@ -353,7 +352,7 @@ module sha1_core(
end
end // round_ctr
-
+
//----------------------------------------------------------------
// sha1_ctrl_fsm
// Logic for the state machine controlling the core behaviour.
@@ -374,12 +373,12 @@ module sha1_core(
digest_valid_we = 0;
sha1_ctrl_new = CTRL_IDLE;
sha1_ctrl_we = 0;
-
+
case (sha1_ctrl_reg)
CTRL_IDLE:
begin
ready_flag = 1;
-
+
if (init)
begin
digest_init = 1;
@@ -405,13 +404,13 @@ module sha1_core(
end
end
-
+
CTRL_ROUNDS:
begin
state_update = 1;
round_ctr_inc = 1;
w_next = 1;
-
+
if (round_ctr_reg == SHA1_ROUNDS)
begin
sha1_ctrl_new = CTRL_DONE;
@@ -419,7 +418,7 @@ module sha1_core(
end
end
-
+
CTRL_DONE:
begin
digest_update = 1;
@@ -430,7 +429,7 @@ module sha1_core(
end
endcase // case (sha1_ctrl_reg)
end // sha1_ctrl_fsm
-
+
endmodule // sha1_core
//======================================================================
diff --git a/src/rtl/sha1_w_mem.v b/src/rtl/sha1_w_mem.v
index 7b30683..c91a535 100644
--- a/src/rtl/sha1_w_mem.v
+++ b/src/rtl/sha1_w_mem.v
@@ -9,30 +9,30 @@
//
// 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,
+//
+// 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
+// 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.
//
//======================================================================
@@ -49,7 +49,7 @@ module sha1_w_mem(
output wire [31 : 0] w
);
-
+
//----------------------------------------------------------------
// Internal constant and parameter definitions.
//----------------------------------------------------------------
@@ -58,7 +58,7 @@ module sha1_w_mem(
parameter CTRL_IDLE = 1'b0;
parameter CTRL_UPDATE = 1'b1;
-
+
//----------------------------------------------------------------
// Registers including update variables and write enable.
//----------------------------------------------------------------
@@ -80,32 +80,31 @@ module sha1_w_mem(
reg [31 : 0] w_mem14_new;
reg [31 : 0] w_mem15_new;
reg w_mem_we;
-
+
reg [6 : 0] w_ctr_reg;
reg [6 : 0] w_ctr_new;
reg w_ctr_we;
reg w_ctr_inc;
reg w_ctr_rst;
-
+
reg sha1_w_mem_ctrl_reg;
reg sha1_w_mem_ctrl_new;
reg sha1_w_mem_ctrl_we;
-
-
+
+
//----------------------------------------------------------------
// Wires.
//----------------------------------------------------------------
reg [31 : 0] w_tmp;
reg [31 : 0] w_new;
- reg mem_update;
-
-
+
+
//----------------------------------------------------------------
// Concurrent connectivity for ports etc.
//----------------------------------------------------------------
assign w = w_tmp;
-
-
+
+
//----------------------------------------------------------------
// reg_update
//
@@ -133,7 +132,7 @@ module sha1_w_mem(
w_mem[13] <= 32'h00000000;
w_mem[14] <= 32'h00000000;
w_mem[15] <= 32'h00000000;
- w_ctr_reg <= 7'b0000000;
+ w_ctr_reg <= 7'h00;
sha1_w_mem_ctrl_reg <= CTRL_IDLE;
end
else
@@ -157,12 +156,12 @@ module sha1_w_mem(
w_mem[14] <= w_mem14_new;
w_mem[15] <= w_mem15_new;
end
-
+
if (w_ctr_we)
begin
w_ctr_reg <= w_ctr_new;
end
-
+
if (sha1_w_mem_ctrl_we)
begin
sha1_w_mem_ctrl_reg <= sha1_w_mem_ctrl_new;
@@ -171,11 +170,11 @@ module sha1_w_mem(
end
end // reg_update
-
+
//----------------------------------------------------------------
// select_w
//
- // W word selection logic. Returns either directly from the
+ // W word selection logic. Returns either directly from the
// memory or the next w value calculated.
//----------------------------------------------------------------
always @*
@@ -190,7 +189,7 @@ module sha1_w_mem(
end
end // w_schedule
-
+
//----------------------------------------------------------------
// w_mem_update_logic
//
@@ -222,14 +221,14 @@ module sha1_w_mem(
w_mem14_new = 32'h00000000;
w_mem15_new = 32'h00000000;
w_mem_we = 0;
-
+
w_0 = w_mem[0];
w_2 = w_mem[2];
w_8 = w_mem[8];
w_13 = w_mem[13];
w_16 = w_13 ^ w_8 ^ w_2 ^ w_0;
w_new = {w_16[30 : 0], w_16[31]};
-
+
if (init)
begin
w_mem00_new = block[511 : 480];
@@ -273,7 +272,7 @@ module sha1_w_mem(
end
end // w_mem_update_logic
-
+
//----------------------------------------------------------------
// w_ctr
//
@@ -282,23 +281,23 @@ module sha1_w_mem(
//----------------------------------------------------------------
always @*
begin : w_ctr
- w_ctr_new = 0;
+ w_ctr_new = 7'h00;
w_ctr_we = 0;
-
+
if (w_ctr_rst)
begin
- w_ctr_new = 6'h00;
+ w_ctr_new = 7'h00;
w_ctr_we = 1;
end
if (w_ctr_inc)
begin
- w_ctr_new = w_ctr_reg + 6'h01;
+ w_ctr_new = w_ctr_reg + 7'h01;
w_ctr_we = 1;
end
end // w_ctr
-
+
//----------------------------------------------------------------
// sha1_w_mem_fsm
//
@@ -310,7 +309,7 @@ module sha1_w_mem(
w_ctr_inc = 0;
sha1_w_mem_ctrl_new = CTRL_IDLE;
sha1_w_mem_ctrl_we = 0;
-
+
case (sha1_w_mem_ctrl_reg)
CTRL_IDLE:
begin
@@ -321,14 +320,14 @@ module sha1_w_mem(
sha1_w_mem_ctrl_we = 1;
end
end
-
+
CTRL_UPDATE:
begin
if (next)
begin
w_ctr_inc = 1;
end
-
+
if (w_ctr_reg == SHA1_ROUNDS)
begin
sha1_w_mem_ctrl_new = CTRL_IDLE;
diff --git a/src/tb/tb_sha1_w_mem.v b/src/tb/tb_sha1_w_mem.v
index 9ad16da..7426bcd 100644
--- a/src/tb/tb_sha1_w_mem.v
+++ b/src/tb/tb_sha1_w_mem.v
@@ -7,30 +7,30 @@
//
// 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,
+//
+// 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
+// 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.
//
//======================================================================
@@ -42,7 +42,7 @@
module tb_sha1_w_mem();
-
+
//----------------------------------------------------------------
// Internal constant and parameter definitions.
//----------------------------------------------------------------
@@ -51,12 +51,12 @@ module tb_sha1_w_mem();
parameter CLK_HALF_PERIOD = 2;
-
+
//----------------------------------------------------------------
// Registers including update variables and write enable.
//----------------------------------------------------------------
-
+
//----------------------------------------------------------------
// Wires.
//----------------------------------------------------------------
@@ -70,35 +70,35 @@ module tb_sha1_w_mem();
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),
-
+
.block(tb_block),
.init(tb_init),
.next(tb_next),
-
+
.w(tb_w)
);
-
+
//----------------------------------------------------------------
// clk_gen
//
- // Clock generator process.
+ // Clock generator process.
//----------------------------------------------------------------
- always
+ always
begin : clk_gen
#CLK_HALF_PERIOD tb_clk = !tb_clk;
end // clk_gen
-
+
//--------------------------------------------------------------------
// dut_monitor
//
@@ -119,8 +119,8 @@ module tb_sha1_w_mem();
dump_w_state();
end
end // dut_monitor
-
-
+
+
//----------------------------------------------------------------
// dump_w_state()
//
@@ -130,30 +130,29 @@ module tb_sha1_w_mem();
begin
$display("W state:");
-
- $display("ctrl_reg = %01x, w_ctr_reg = %02x, mem_update = %01x, init = %01x, next = %01x",
- dut.sha1_w_mem_ctrl_reg, dut.w_ctr_reg, dut.mem_update,
- dut.init, dut.next);
-
+
+ $display("ctrl_reg = %01x, w_ctr_reg = %02x, init = %01x, next = %01x",
+ dut.sha1_w_mem_ctrl_reg, dut.w_ctr_reg, dut.init, dut.next);
+
$display("w_tmp = %08x, w_new = %08x", dut.w_tmp, dut.w_new);
-
- $display("w0_reg = %08x, w1_reg = %08x, w2_reg = %08x, w3_reg = %08x",
+
+ $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",
+ $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",
+ $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",
+ $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("");
end
endtask // dump_state
-
-
+
+
//----------------------------------------------------------------
// reset_dut
//----------------------------------------------------------------
@@ -165,8 +164,8 @@ module tb_sha1_w_mem();
tb_reset_n = 1;
end
endtask // reset_dut
-
-
+
+
//----------------------------------------------------------------
// init_sim
//----------------------------------------------------------------
@@ -182,7 +181,7 @@ module tb_sha1_w_mem();
end
endtask // reset_dut
-
+
//----------------------------------------------------------------
// dump_mem()
//
@@ -211,8 +210,8 @@ module tb_sha1_w_mem();
$display("");
end
endtask // dump_mem
-
-
+
+
//----------------------------------------------------------------
// test_w_schedule()
//
@@ -229,11 +228,11 @@ module tb_sha1_w_mem();
tb_next = 1;
#(200 * CLK_HALF_PERIOD);
-
+
dump_w_state();
end
endtask // test_w_schedule
-
+
//----------------------------------------------------------------
// test_read_w/(
@@ -249,7 +248,7 @@ module tb_sha1_w_mem();
tb_init = 1;
#(2 * CLK_HALF_PERIOD);
tb_init = 0;
-
+
while (i < 80)
begin
tb_next = i;
@@ -259,10 +258,10 @@ module tb_sha1_w_mem();
end
end
endtask // read_w
-
-
+
+
//----------------------------------------------------------------
- // The main test functionality.
+ // The main test functionality.
//----------------------------------------------------------------
initial
begin : w_mem_test
@@ -272,7 +271,7 @@ module tb_sha1_w_mem();
dump_mem();
reset_dut();
dump_mem();
-
+
test_w_schedule();
test_read_w();
@@ -280,9 +279,9 @@ module tb_sha1_w_mem();
$display("*** Simulation done.");
$finish;
end
-
+
endmodule // w_mem_test
-
+
//======================================================================
// EOF tb_sha1_w_mem.v
//======================================================================
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