[Cryptech-Commits] [core/util/keywrap] 34/37: Adding test that tries to write a key into the serial memory.

[git at cryptech.is]

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paul at psgd.org pushed a commit to branch master
in repository core/util/keywrap.

commit 88c15a5ff837dc6871f7ca8caf4610a4e2d056fd
Author: Joachim Strömbergson <joachim at secworks.se>
AuthorDate: Tue Nov 27 13:48:22 2018 +0100

    Adding test that tries to write a key into the serial memory.
---
 src/tb/tb_keywrap_mkmif.v | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/src/tb/tb_keywrap_mkmif.v b/src/tb/tb_keywrap_mkmif.v
index 79083e4..3289a77 100644
--- a/src/tb/tb_keywrap_mkmif.v
+++ b/src/tb/tb_keywrap_mkmif.v
@@ -336,6 +336,39 @@ module tb_keywrap_mkmif();
   endtask // test_write_status
 
 
+  //----------------------------------------------------------------
+  // test_write_key
+  //----------------------------------------------------------------
+  task test_write_key;
+    begin
+      tc_ctr = tc_ctr + 1;
+
+      $display("TEST WRITE-KEY START");
+      $display("Check that we can write the key words.");
+
+      // Observe SPI for a number of cycles. Reset the DUT during observation.
+      show_spi = 0;
+      #(10 * CLK_PERIOD);
+
+      $display("Trying to write test key to key address.");
+      $display("test key: 0x01020304 0xaa55aa55 0x00ff00ff 0x0f0e0d0c");
+      $display("          0x11121314 0x55aa55aa 0x11ee11ee 0x1f1e1d1c");
+
+      tb_wr_key = 256'h01020304_aa55aa55_00ff00ff_0f0e0d0c_11121314_55aa55aa_11ee11ee_1f1e1d1c;
+      tb_key_status = 1'h1;
+      tb_write      = 1'h1;
+
+      #(CLK_PERIOD);
+      tb_write      = 1'h0;
+
+      wait_ready();
+      show_spi = 0;
+
+      $display("TEST WRITE-KEY END");
+      $display("");
+    end
+  endtask // test_write_key
+
   //----------------------------------------------------------------
   // main
   //----------------------------------------------------------------
@@ -350,6 +383,7 @@ module tb_keywrap_mkmif();
       dump_mem();
       test_init_mem();
       test_write_status();
+      test_write_key();
       dump_mem();
 
       $display("");