From 0d2aa16a71c1f0ca183a71c3d5460c6ff1a2f245 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joachim=20Stro=CC=88mbergson?= <joachim@secworks.se>
Date: Fri, 7 Dec 2018 10:03:23 +0100
Subject: Solved event loop.

---
 src/tb/tb_keywrap_mkmif.v | 42 +++++++++++++++++++++++++++++++++++++++---
 1 file changed, 39 insertions(+), 3 deletions(-)

(limited to 'src/tb/tb_keywrap_mkmif.v')

diff --git a/src/tb/tb_keywrap_mkmif.v b/src/tb/tb_keywrap_mkmif.v
index 3289a77..b275499 100644
--- a/src/tb/tb_keywrap_mkmif.v
+++ b/src/tb/tb_keywrap_mkmif.v
@@ -215,7 +215,7 @@ module tb_keywrap_mkmif();
       tc_ctr    = 0;
 
       show_spi       = 0;
-      show_dut_state = 1;
+      show_dut_state = 0;
       show_mem_state = 0;
       show_mkm_state = 0;
 
@@ -303,7 +303,7 @@ module tb_keywrap_mkmif();
       tc_ctr = tc_ctr + 1;
 
       $display("TEST WRITE-STATUS START");
-      $display("Check that we can write the key status word.");
+      $display("Check that we can write the status word.");
 
       // Observe SPI for a number of cycles. Reset the DUT during observation.
       show_spi = 0;
@@ -336,6 +336,41 @@ module tb_keywrap_mkmif();
   endtask // test_write_status
 
 
+  //----------------------------------------------------------------
+  // test_read_status
+  // Note: This test should be called after test_write_status.
+  // If not the contents of the memort will be undefined.
+  //----------------------------------------------------------------
+  task test_read_status;
+    begin
+      tc_ctr = tc_ctr + 1;
+
+      $display("TEST READ-STATUS START");
+      $display("Check that we can read the status word.");
+
+      // Observe SPI for a number of cycles. Reset the DUT during observation.
+      show_spi = 0;
+      show_dut_state = 1;
+      #(10 * CLK_PERIOD);
+
+      $display("Trying to read 0xdeadbeef from the status address.");
+      tb_key_status = 1'h0;
+      tb_read       = 1'h1;
+
+      #(CLK_PERIOD);
+      tb_read      = 1'h0;
+
+      wait_ready();
+      show_spi = 0;
+
+        $display("The word read: 0x%04x", tb_rd_status);
+
+      $display("TEST READ-STATUS END");
+      $display("");
+    end
+  endtask // test_read_status
+
+
   //----------------------------------------------------------------
   // test_write_key
   //----------------------------------------------------------------
@@ -383,7 +418,8 @@ module tb_keywrap_mkmif();
       dump_mem();
       test_init_mem();
       test_write_status();
-      test_write_key();
+//      test_read_status();
+//      test_write_key();
       dump_mem();
 
       $display("");
-- 
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