[Cryptech-Commits] [core/pkey/ecdsa384] branch master updated: Same changes as for the 256-bit core.

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meisterpaul1 at yandex.ru pushed a commit to branch master
in repository core/pkey/ecdsa384.

The following commit(s) were added to refs/heads/master by this push:
     new 4b83a09  Same changes as for the 256-bit core.
4b83a09 is described below

commit 4b83a09434a1fe9b796c6c69388fc926c0794090
Author: Pavel V. Shatov (Meister) <meisterpaul1 at yandex.ru>
AuthorDate: Thu Sep 6 12:32:14 2018 +0300

    Same changes as for the 256-bit core.
---
 rtl/curve/curve_dbl_add_384.v | 45 ++++++++++++++++++++++++++++++-------------
 rtl/curve/curve_mul_384.v     |  8 ++++----
 2 files changed, 36 insertions(+), 17 deletions(-)

diff --git a/rtl/curve/curve_dbl_add_384.v b/rtl/curve/curve_dbl_add_384.v
index d14bbc7..cc983f3 100644
--- a/rtl/curve/curve_dbl_add_384.v
+++ b/rtl/curve/curve_dbl_add_384.v
@@ -6,7 +6,7 @@
 //
 // Authors: Pavel Shatov
 //
-// Copyright (c) 2016, NORDUnet A/S
+// Copyright (c) 2016, 2018 NORDUnet A/S
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are met:
@@ -424,11 +424,30 @@ module curve_dbl_add_384
    //
    // uOP Trigger Logic
    //
-   reg 						      uop_trig;
+   (* EQUIVALENT_REGISTER_REMOVAL="NO" *) reg uop_trig_fsm;
+   (* EQUIVALENT_REGISTER_REMOVAL="NO" *) reg uop_trig_cmp;
+   (* EQUIVALENT_REGISTER_REMOVAL="NO" *) reg uop_trig_mov;
+   (* EQUIVALENT_REGISTER_REMOVAL="NO" *) reg uop_trig_add;
+   (* EQUIVALENT_REGISTER_REMOVAL="NO" *) reg uop_trig_sub;
+   (* EQUIVALENT_REGISTER_REMOVAL="NO" *) reg uop_trig_mul;
+
    always @(posedge clk or negedge rst_n)
      //
-     if (rst_n == 1'b0)	uop_trig <= 1'b0;
-     else						uop_trig <= (fsm_state == FSM_STATE_FETCH) ? 1'b1 : 1'b0;
+       if (rst_n == 1'b0) begin
+            uop_trig_fsm <= 1'b0;
+            uop_trig_cmp <= 1'b0;
+            uop_trig_mov <= 1'b0;
+            uop_trig_add <= 1'b0;
+            uop_trig_sub <= 1'b0;
+            uop_trig_mul <= 1'b0;
+        end else begin
+            uop_trig_fsm <= (fsm_state == FSM_STATE_FETCH) ? 1'b1 : 1'b0;
+            uop_trig_cmp <= (fsm_state == FSM_STATE_FETCH) ? 1'b1 : 1'b0;
+            uop_trig_mov <= (fsm_state == FSM_STATE_FETCH) ? 1'b1 : 1'b0;
+            uop_trig_add <= (fsm_state == FSM_STATE_FETCH) ? 1'b1 : 1'b0;
+            uop_trig_sub <= (fsm_state == FSM_STATE_FETCH) ? 1'b1 : 1'b0;
+            uop_trig_mul <= (fsm_state == FSM_STATE_FETCH) ? 1'b1 : 1'b0;
+        end
 
 
    //
@@ -453,7 +472,7 @@ module curve_dbl_add_384
      else case (fsm_state)
 	    FSM_STATE_STALL:		fsm_state <= ena ? FSM_STATE_FETCH : FSM_STATE_STALL;
 	    FSM_STATE_FETCH:		fsm_state <= FSM_STATE_EXECUTE;
-	    FSM_STATE_EXECUTE:	fsm_state <= (!uop_trig && uop_done) ? fsm_state_next : FSM_STATE_EXECUTE;
+	    FSM_STATE_EXECUTE:	fsm_state <= (!uop_trig_fsm && uop_done) ? fsm_state_next : FSM_STATE_EXECUTE;
 	    default:					fsm_state <= FSM_STATE_STALL;
 	  endcase
 
@@ -466,7 +485,7 @@ module curve_dbl_add_384
      if (fsm_state == FSM_STATE_STALL)
        uop_addr <= 5'd0;
      else if (fsm_state == FSM_STATE_EXECUTE)
-       if (!uop_trig && uop_done)
+       if (!uop_trig_fsm && uop_done)
 	 uop_addr <= (uop_opcode == OPCODE_RDY) ? 5'd0 : uop_addr + 1'b1;
 
 
@@ -489,11 +508,11 @@ module curve_dbl_add_384
    //
    // Helper Modules Enable Logic
    //
-   assign mw_cmp_ena		= uop_opcode[0] & uop_trig;
-   assign mw_mov_ena		= uop_opcode[1] & uop_trig;
-   assign mod_add_ena	= uop_opcode[2] & uop_trig;
-   assign mod_sub_ena	= uop_opcode[3] & uop_trig;
-   assign mod_mul_ena	= uop_opcode[4] & uop_trig;
+   assign mw_cmp_ena		= uop_opcode[0] & uop_trig_cmp;
+   assign mw_mov_ena		= uop_opcode[1] & uop_trig_mov;
+   assign mod_add_ena	= uop_opcode[2] & uop_trig_add;
+   assign mod_sub_ena	= uop_opcode[3] & uop_trig_sub;
+   assign mod_mul_ena	= uop_opcode[4] & uop_trig_mul;
 
 
    //
@@ -830,7 +849,7 @@ module curve_dbl_add_384
      //
      if (	(fsm_state  == FSM_STATE_EXECUTE) &&
 		(uop_opcode == OPCODE_CMP)        &&
-		(uop_done && !uop_trig) ) begin
+		(uop_done && !uop_trig_cmp) ) begin
 
 	if ( (uop_src_a == UOP_SRC_PZ) && (uop_src_b == UOP_SRC_ZERO) )
 	  flag_pz_is_zero <= !mw_cmp_out_l && mw_cmp_out_e && !mw_cmp_out_g;
@@ -860,7 +879,7 @@ module curve_dbl_add_384
 	  if (ena) rdy_reg <= 1'b0;
 
 	/* set flag */
-	if ((fsm_state == FSM_STATE_EXECUTE) && !uop_trig && uop_done)
+	if ((fsm_state == FSM_STATE_EXECUTE) && !uop_trig_fsm && uop_done)
 	  if (uop_opcode == OPCODE_RDY) rdy_reg <= 1'b1;
 
      end
diff --git a/rtl/curve/curve_mul_384.v b/rtl/curve/curve_mul_384.v
index 5b8faf1..e9a531a 100644
--- a/rtl/curve/curve_mul_384.v
+++ b/rtl/curve/curve_mul_384.v
@@ -230,7 +230,7 @@ module curve_mul_384
    wire [19: 0] 		     op_rom_conv_data;
    reg [19: 0] 			     op_rom_mux_data;
 
-   (* RAM_STYLE="BLOCK" *)
+   (* EQUIVALENT_REGISTER_REMOVAL="NO" *)
    uop_init_rom op_rom_init
      (
       .clk	(clk),
@@ -238,7 +238,7 @@ module curve_mul_384
       .data	(op_rom_init_data)
       );
 
-   (* RAM_STYLE="BLOCK" *)
+   (* EQUIVALENT_REGISTER_REMOVAL="NO" *)
    uop_dbl_rom op_rom_dbl
      (
       .clk	(clk),
@@ -246,7 +246,7 @@ module curve_mul_384
       .data	(op_rom_dbl_data)
       );
 
-   (* RAM_STYLE="BLOCK" *)
+   (* EQUIVALENT_REGISTER_REMOVAL="NO" *)
    uop_add_rom op_rom_add
      (
       .clk	(clk),
@@ -254,7 +254,7 @@ module curve_mul_384
       .data	(op_rom_add_data)
       );
 
-   (* RAM_STYLE="BLOCK" *)
+   (* EQUIVALENT_REGISTER_REMOVAL="NO" *)
    uop_conv_rom op_rom_conv
      (
       .clk	(clk),

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