Added non-zero default timeout value in core. This fixes the keywrap problems by not automatically reset the key in the API. Enabled all testcases and disabled excessive debug outputs.auto_zeroise

2 files changed, 17 insertions, 15 deletions

diff --git a/src/rtl/keywrap_core.v b/src/rtl/keywrap_core.v
index b084363..0354475 100644
--- a/src/rtl/keywrap_core.v
+++ b/src/rtl/keywrap_core.v
@@ -91,6 +91,8 @@ module keywrap_core #(parameter MEM_BITS = 11)
   localparam CTRL_NEXT_FINALIZE = 4'ha;
   localparam CTRL_ZERO_WAIT     = 4'hb;
 
+  localparam DEFAULT_TIMEOUT  = 32'h0400_0000;
+
 
   //----------------------------------------------------------------
   // Registers and memories including control signals.
@@ -222,7 +224,7 @@ module keywrap_core #(parameter MEM_BITS = 11)
           key_loaded_reg        <= 1'h0;
           block_ctr_reg         <= {(MEM_BITS - 1){1'h0}};
           iteration_ctr_reg     <= 3'h0;
-          key_timeout_ctr_reg   <= 32'h0;
+          key_timeout_ctr_reg   <= DEFAULT_TIMEOUT;
           keywrap_core_ctrl_reg <= CTRL_IDLE;
        end
 
diff --git a/src/tb/tb_keywrap.v b/src/tb/tb_keywrap.v
index c900b2a..b232ab3 100644
--- a/src/tb/tb_keywrap.v
+++ b/src/tb/tb_keywrap.v
@@ -39,7 +39,7 @@
 
 module tb_keywrap();
 
-  parameter DEBUG        = 1;
+  parameter DEBUG        = 0;
   parameter DUMP_TOP     = 1;
   parameter DUMP_CORE    = 1;
   parameter DUMP_TIMEOUT = 1;
@@ -299,17 +299,17 @@ module tb_keywrap();
           $display("keywrap_core_ctrl_reg = 0x%0x", dut.core.keywrap_core_ctrl_reg);
           $display("keywrap_core_ctrl_new = 0x%0x", dut.core.keywrap_core_ctrl_new);
           $display("keywrap_core_ctrl_we  = 0x%0x", dut.core.keywrap_core_ctrl_we);
+          $display("");
         end
 
       if (DUMP_TIMEOUT)
         begin
-          $display("timeout signals:");
-
+          $display("timeout state:");
           $display("api_timeout_reg = 0x%04x  api_timeout_we = 0x%x", dut.timeout_reg, dut.timeout_we);
-          $display("timeout = 0x%04x  ping = 0x%x  zeroise = 0x%x  loaded = 0x%x",
-                   dut.core.timeout, dut.core.ping, dut.core.zeroise, dut.core.loaded);
-          $display("key_timeout_ctr_reg = 0x%04x  key_timeout_ctr_new = 0x%04x",
-                   dut.core.key_timeout_ctr_reg, dut.core.key_timeout_ctr_new);
+          $display("timeout_delay = 0x%04x  timeout = 0x%x  ping = 0x%x  zeroise = 0x%x  loaded = 0x%x",
+                   dut.core.timeout_delay, dut.core.timeout, dut.core.ping, dut.core.zeroise, dut.core.loaded);
+          $display("key_timeout_ctr_reg = 0x%04x  key_timeout_ctr_new = 0x%04x  key_timeout_ctr_we = 0x%x",
+                   dut.core.key_timeout_ctr_reg, dut.core.key_timeout_ctr_new, dut.core.key_timeout_ctr_we);
           $display("key_timeout = 0x%x  key_timeout_ctr_we = 0x%x  key_timeout_ctr_set = 0x%x  key_timeout_ctr_dec = 0x%x",
                    dut.core.key_timeout, dut.core.key_timeout_ctr_we, dut.core.key_timeout_ctr_set, dut.core.key_timeout_ctr_dec);
 
@@ -1531,15 +1531,15 @@ module tb_keywrap();
       test_core_access();
 
       test_kwp_ae_128_1();
-//      test_kwp_ad_128_1();
-//      test_kwp_ae_128_2();
-//      test_kwp_ad_128_2();
-//      test_big_wrap_256();
+      test_kwp_ad_128_1();
+      test_kwp_ae_128_2();
+      test_kwp_ad_128_2();
+      test_big_wrap_256();
 
       reset_dut();
-//      test_zeroise1();
-//      test_zeroise2();
-//      test_zeroise3();
+      test_zeroise1();
+      test_zeroise2();
+      test_zeroise3();
 
       display_test_results();