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-rw-r--r--src/tb/tb_modexp.v61
-rw-r--r--src/tb/tb_modexp_autogenerated.v4
2 files changed, 58 insertions, 7 deletions
diff --git a/src/tb/tb_modexp.v b/src/tb/tb_modexp.v
index fe22662..363b4ed 100644
--- a/src/tb/tb_modexp.v
+++ b/src/tb/tb_modexp.v
@@ -256,8 +256,8 @@ module tb_modexp();
dut.core_inst.ready_reg, dut.start_reg, dut.start_new);
$display("residue_valid = 0x%01x", dut.core_inst.residue_valid_reg);
$display("loop_counter_reg = 0x%08x", dut.core_inst.loop_counter_reg);
- $display("exponent_length_reg = 0x%02x, modulus_length_reg = 0x%02x length_m1 = 0x%02x",
- dut.exponent_length_reg, dut.modulus_length_reg, dut.core_inst.length_m1);
+ $display("exponent_length_reg = 0x%02x exponent_length_m1 = 0x%02x modulus_length_reg = 0x%02x modulus_length_m1 = 0x%02x",
+ dut.exponent_length_reg, dut.core_inst.exponent_length_m1, dut.modulus_length_reg, dut.core_inst.modulus_length_m1);
$display("ctrl_reg = 0x%04x", dut.core_inst.modexp_ctrl_reg);
$display("");
end
@@ -885,6 +885,56 @@ module tb_modexp();
//----------------------------------------------------------------
+ // e65537_64bit_modulus_elength()
+ //----------------------------------------------------------------
+ task e65537_64bit_modulus_elength();
+ reg [31 : 0] read_data;
+ begin
+ success = 32'h1;
+ tc_ctr = tc_ctr + 1;
+ $display("Test with e = 65537 and 64 bit modulus, explicit exponent length.");
+
+ write_word({GENERAL_PREFIX, ADDR_EXPONENT_PTR_RST}, 32'h00000000);
+ write_word({GENERAL_PREFIX, ADDR_EXPONENT_DATA}, 32'h00010001);
+
+ write_word({GENERAL_PREFIX, ADDR_MODULUS_PTR_RST}, 32'h00000000);
+ write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'h00000000);
+ write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'hf077656f);
+ write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'h3bf9e69b);
+
+ write_word({GENERAL_PREFIX, ADDR_MESSAGE_PTR_RST}, 32'h00000000);
+ write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'h00000000);
+ write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'hb6684dc3);
+ write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'h79a5824b);
+
+ write_word({GENERAL_PREFIX, ADDR_EXPONENT_LENGTH}, 32'h00000001);
+ write_word({GENERAL_PREFIX, ADDR_MODULUS_LENGTH}, 32'h00000003);
+
+ start_test_cycle_ctr();
+
+ // Start processing and wait for ready.
+ write_word({GENERAL_PREFIX, ADDR_CTRL}, 32'h00000001);
+ wait_ready();
+
+ stop_test_cycle_ctr();
+
+ write_word({GENERAL_PREFIX, ADDR_RESULT_PTR_RST}, 32'h00000000);
+ read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'h00000000, read_data);
+ read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'h132d8e17, read_data);
+ read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'hdd4d85a4, read_data);
+
+ if (success !== 1)
+ begin
+ $display("*** ERROR: e65537_64bit_modulus with explicit elength was NOT successful.");
+ error_ctr = error_ctr + 1;
+ end
+ else
+ $display("*** e65537_64bit_modulus success.");
+ end
+ endtask // e65537_64bit_modulus_elength
+
+
+ //----------------------------------------------------------------
// e65537_128bit_modulus()
//----------------------------------------------------------------
task e65537_128bit_modulus();
@@ -1398,10 +1448,11 @@ module tb_modexp();
// tc1();
// tc2();
// tc3();
- autogenerated_BASIC_33bit();
- autogenerated_BASIC_128bit();
+// autogenerated_BASIC_33bit();
+// autogenerated_BASIC_128bit();
e65537_64bit_modulus();
-// e65537_128bit_modulus();
+ e65537_64bit_modulus_elength();
+ // e65537_128bit_modulus();
// e65537_256bit_modulus();
// rob_dec_1024();
diff --git a/src/tb/tb_modexp_autogenerated.v b/src/tb/tb_modexp_autogenerated.v
index 1eb80d5..0bb9432 100644
--- a/src/tb/tb_modexp_autogenerated.v
+++ b/src/tb/tb_modexp_autogenerated.v
@@ -174,8 +174,8 @@ module tb_modexp_autogenerated();
dut.core_inst.ready_reg, dut.start_reg, dut.start_new);
$display("residue_valid = 0x%01x", dut.core_inst.residue_valid_reg);
$display("loop_counter_reg = 0x%08x", dut.core_inst.loop_counter_reg);
- $display("exponent_length_reg = 0x%02x, modulus_length_reg = 0x%02x length_m1 = 0x%02x",
- dut.exponent_length_reg, dut.modulus_length_reg, dut.core_inst.length_m1);
+ $display("exponent_length_reg = 0x%02x, modulus_length_reg = 0x%02x modulus_length_m1 = 0x%02x",
+ dut.exponent_length_reg, dut.modulus_length_reg, dut.core_inst.modulus_length_m1);
$display("ctrl_reg = 0x%04x", dut.core_inst.modexp_ctrl_reg);
$display("");
end