commit ef411792fe6bf1c123a29ad6dba371e20bb15ae3
author Greg Chadwick <gac@lowrisc.org> Tue Dec 01 17:44:34 2020 +0000
committer Greg Chadwick <gac@lowrisc.org> Fri Dec 04 09:02:16 2020 +0000
tree 0de9fdd492d49ec458e0ca1b3e3ec7a14bc32424
parent 5df71536d980235d00cd7bb0cd7aa218c51d11dc

[otbn] Factor insn_valid into base RF read enables

Signed-off-by: Greg Chadwick <gac@lowrisc.org>

hw/ip/otbn/rtl/otbn_controller.sv

diff --git a/hw/ip/otbn/rtl/otbn_controller.sv b/hw/ip/otbn/rtl/otbn_controller.sv
index 7af857e..21b0238 100644
--- a/hw/ip/otbn/rtl/otbn_controller.sv
+++ b/hw/ip/otbn/rtl/otbn_controller.sv
@@ -286,9 +286,9 @@
 
   always_comb begin
     rf_base_rd_addr_a_o = insn_dec_base_i.a;
-    rf_base_rd_en_a_o   = insn_dec_base_i.rf_ren_a;
+    rf_base_rd_en_a_o   = insn_dec_base_i.rf_ren_a & insn_valid_i;
     rf_base_rd_addr_b_o = insn_dec_base_i.b;
-    rf_base_rd_en_b_o   = insn_dec_base_i.rf_ren_b;
+    rf_base_rd_en_b_o   = insn_dec_base_i.rf_ren_b & insn_valid_i;
     rf_base_wr_addr_o   = insn_dec_base_i.d;
 
     if (insn_dec_shared_i.subset == InsnSubsetBignum) begin