From caf3ad473fc5325af2146274aebe2f7c66dbd63d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joachim=20Stro=CC=88mbergson?= <joachim@secworks.se>
Date: Tue, 8 Jan 2019 09:55:33 +0100
Subject: Ported the timing fix from SHA-512 to SHA-256. The core can now run
 at 170 MHz in the target FPGA.

---
 src/rtl/sha256_core.v | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/rtl/sha256_core.v')

diff --git a/src/rtl/sha256_core.v b/src/rtl/sha256_core.v
index 048df2b..564d45e 100644
--- a/src/rtl/sha256_core.v
+++ b/src/rtl/sha256_core.v
@@ -564,6 +564,7 @@ module sha256_core(
 
         CTRL_ROUNDS0:
           begin
+            w_next          = 1'h1;
             state_update    = 1'h1;
             sha256_ctrl_new = CTRL_ROUNDS1;
             sha256_ctrl_we  = 1'h1;
@@ -572,7 +573,6 @@ module sha256_core(
 
         CTRL_ROUNDS1:
           begin
-            w_next       = 1'h1;
             state_update = 1'h1;
             a_h_we       = 1'h1;
             t_ctr_inc    = 1'h1;
-- 
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