[Cryptech-Commits] [core/trng] 01/02: Debug fixes found during simulation. Now the trng generates data and provides an api.

[git at cryptech.is]

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joachim at secworks.se pushed a commit to branch master
in repository core/trng.

commit 3e5ec06bd7779ee6546ffa4a921b5b8a0e1859fb
Author: Joachim Strömbergson <joachim at secworks.se>
Date:   Tue Sep 16 17:18:46 2014 +0200

    Debug fixes found during simulation. Now the trng generates data and provides an api.
---
 src/rtl/trng.v | 41 +++++++++++++++++++++++++----------------
 1 file changed, 25 insertions(+), 16 deletions(-)

diff --git a/src/rtl/trng.v b/src/rtl/trng.v
index f296ce5..0d6b7b0 100644
--- a/src/rtl/trng.v
+++ b/src/rtl/trng.v
@@ -1,4 +1,4 @@
-//======================================================================
+ //======================================================================
 //
 // trng.v
 // --------
@@ -50,6 +50,8 @@ module trng(
             output wire [31 : 0] read_data,
             output wire          error,
 
+            output wire  [7 : 0] debug,
+
             output wire          security_error
            );
 
@@ -163,10 +165,9 @@ module trng(
   wire [31 : 0]  entropy2_data;
   wire           entropy2_ack;
 
-  reg            mixer_enable;
+  wire           mixer_enable;
   wire [511 : 0] mixer_seed_data;
   wire           mixer_seed_syn;
-  wire           mixer_seed_ack;
 
   wire           csprng_enable;
   wire           csprng_debug_mode;
@@ -174,6 +175,7 @@ module trng(
   wire [63 : 0]  csprng_num_blocks;
   wire           csprng_seed;
   wire           csprng_more_seed;
+  wire           csprng_seed_ack;
   wire           csprng_ready;
   wire           csprng_error;
   wire [31 : 0]  csprng_rnd_data;
@@ -189,6 +191,7 @@ module trng(
   assign read_data      = tmp_read_data;
   assign error          = tmp_error;
   assign security_error = 0;
+  assign debug          = 0;
 
   assign csprng_num_blocks = {csprng_num_blocks_high_reg,
                               csprng_num_blocks_low_reg};
@@ -197,6 +200,12 @@ module trng(
   assign entropy1_enable = entropy1_enable_reg;
   assign entropy2_enable = entropy2_enable_reg;
 
+  assign mixer_enable  = enable_reg;
+
+  assign csprng_enable     = enable_reg;
+  assign csprng_seed       = csprng_seed_reg;
+  assign csprng_debug_mode = 0;
+
 
   //----------------------------------------------------------------
   // core instantiations.
@@ -225,7 +234,7 @@ module trng(
 
                    .seed_data(mixer_seed_data),
                    .seed_syn(mixer_seed_syn),
-                   .seed_ack(mixer_seed_ack)
+                   .seed_ack(csprng_seed_ack)
                   );
 
   trng_csprng csprng(
@@ -265,22 +274,22 @@ module trng(
                           .entropy_ack(entropy0_ack)
                          );
 
-  avalance_entropy entropy1(
-                            .clk(clk),
-                            .reset_n(reset_n),
+  avalance_entropy_core entropy1(
+                                 .clk(clk),
+                                 .reset_n(reset_n),
 
-                            .enable(entropy1_enable),
+                                 .enable(entropy1_enable),
 
-                            .noise(avalanche_noise),
+                                 .noise(avalanche_noise),
 
-                            .raw_entropy(entropy1_raw),
-                            .stats(entropy1_stats),
+                                 .raw_entropy(entropy1_raw),
+                                 .stats(entropy1_stats),
 
-                            .enabled(entropy1_enabled),
-                            .entropy_syn(entropy1_syn),
-                            .entropy_data(entropy1_data),
-                            .entropy_ack(entropy1_ack)
-                           );
+                                 .enabled(entropy1_enabled),
+                                 .entropy_syn(entropy1_syn),
+                                 .entropy_data(entropy1_data),
+                                 .entropy_ack(entropy1_ack)
+                                );
 
   ringosc_entropy entropy2(
                            .clk(clk),