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-rw-r--r--src/tb/tb_sha256_core.v33
1 files changed, 28 insertions, 5 deletions
diff --git a/src/tb/tb_sha256_core.v b/src/tb/tb_sha256_core.v
index 5527bf5..1b1c6ed 100644
--- a/src/tb/tb_sha256_core.v
+++ b/src/tb/tb_sha256_core.v
@@ -296,6 +296,25 @@ module tb_sha256_core();
//----------------------------------------------------------------
+ // wait_data_valid()
+ //
+ // Wait for the data valid in th 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_data_valid();
+ begin
+ while (!tb_digest_valid)
+ begin
+ #(CLK_PERIOD);
+ end
+ end
+ endtask // wait_data_valid
+
+
+ //----------------------------------------------------------------
// single_block_test()
//
// Run a test case spanning a single data block.
@@ -310,9 +329,9 @@ module tb_sha256_core();
tb_block = block;
tb_init = 1;
#(CLK_PERIOD);
+ tb_init = 0;
wait_ready();
-
if (tb_digest == expected)
begin
$display("*** TC %0d successful.", tc_number);
@@ -354,15 +373,20 @@ module tb_sha256_core();
tb_block = block1;
tb_init = 1;
#(CLK_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;
+ dump_dut_state();
tb_next = 1;
#(CLK_PERIOD);
+ tb_next = 0;
wait_ready();
+
$display("*** TC %0d second block done.", tc_number);
if (db_digest1 == expected1)
@@ -379,7 +403,7 @@ module tb_sha256_core();
db_error = 1;
end
- if (db_digest1 == expected1)
+ if (tb_digest == expected2)
begin
$display("*** TC %0d second block successful", tc_number);
$display("");
@@ -413,7 +437,6 @@ module tb_sha256_core();
input [511 : 0] block,
input [255 : 0] expected);
- reg [255 : 0] db_digest1;
reg db_error;
begin
$display("*** TC %0d state restore block test case started.", tc_number);
@@ -463,16 +486,16 @@ module tb_sha256_core();
tb_state7_we = 0;
#(CLK_PERIOD);
- dump_H_state();
$display("*** TC %0d block started.", tc_number);
tb_block = block;
tb_next = 1;
#(CLK_PERIOD);
+ tb_next = 0;
wait_ready();
$display("*** TC %0d block done.", tc_number);
- if (db_digest1 == expected)
+ if (tb_digest == expected)
begin
$display("*** TC %0d block successful", tc_number);
$display("");