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authorJoachim StroĢˆmbergson <joachim@secworks.se>2015-06-22 13:25:05 +0200
committerJoachim StroĢˆmbergson <joachim@secworks.se>2015-06-22 13:25:05 +0200
commit99f265001791aa8c58995fe1d8cfa1959f97de15 (patch)
tree9018b4aac3c8a0e9cbcee21a17670a391ac4a948 /src/rtl
parent747377fd9a6533695dbee9394e16ad4e0481f5b2 (diff)
Removing stale states in FSM.
Diffstat (limited to 'src/rtl')
-rw-r--r--src/rtl/montprod.v52
1 files changed, 26 insertions, 26 deletions
diff --git a/src/rtl/montprod.v b/src/rtl/montprod.v
index 5957c17..45b2792 100644
--- a/src/rtl/montprod.v
+++ b/src/rtl/montprod.v
@@ -65,21 +65,21 @@ module montprod(
//----------------------------------------------------------------
localparam DEBUG = 0;
- localparam CTRL_IDLE = 4'h0;
- localparam CTRL_INIT_S = 4'h1;
- localparam CTRL_WAIT = 4'h2;
- localparam CTRL_LOOP_ITER = 4'h3;
- localparam CTRL_LOOP_BQ = 4'h4;
- localparam CTRL_L_CALC_SA = 4'h5;
- localparam CTRL_L_STALLPIPE_SA = 4'h6;
- localparam CTRL_L_CALC_SDIV2 = 4'h7;
- localparam CTRL_L_STALLPIPE_D2 = 4'h8;
- localparam CTRL_L_STALLPIPE_ES = 4'h9;
- localparam CTRL_EMIT_S = 4'ha;
-
- localparam SMUX_0 = 2'h0;
- localparam SMUX_ADD = 2'h1;
- localparam SMUX_SHR = 2'h2;
+ localparam CTRL_IDLE = 4'h0;
+ localparam CTRL_INIT_S = 4'h1;
+ localparam CTRL_WAIT = 4'h2;
+ localparam CTRL_LOOP_ITER = 4'h3;
+ localparam CTRL_LOOP_BQ = 4'h4;
+ localparam CTRL_CALC_ADD = 4'h5;
+ localparam CTRL_STALLPIPE_ADD = 4'h6;
+ localparam CTRL_CALC_SDIV2 = 4'h7;
+ localparam CTRL_STALLPIPE_SDIV2 = 4'h8;
+ localparam CTRL_L_STALLPIPE_ES = 4'h9;
+ localparam CTRL_EMIT_S = 4'ha;
+
+ localparam SMUX_0 = 2'h0;
+ localparam SMUX_ADD = 2'h1;
+ localparam SMUX_SHR = 2'h2;
//----------------------------------------------------------------
@@ -317,7 +317,7 @@ module montprod(
else if (reset_word_index_msw == 1'b1)
word_index_new = 8'h0;
- else if (montprod_ctrl_reg == CTRL_L_CALC_SDIV2)
+ else if (montprod_ctrl_reg == CTRL_CALC_SDIV2)
word_index_new = word_index_reg + 1'b1;
else
@@ -345,13 +345,13 @@ module montprod(
s_mem_we_new = 1'b1;
end
- CTRL_L_CALC_SA:
+ CTRL_CALC_ADD:
begin
//s = (s + q*M + b*A) >>> 1;, if(b==1) S+= A. Takes (1..length) cycles.
s_mem_we_new = b_reg | q_reg | first_iteration_reg;
end
- CTRL_L_CALC_SDIV2:
+ CTRL_CALC_SDIV2:
begin
//s = (s + q*M + b*A) >>> 1; s>>=1. Takes (1..length) cycles.
s_mem_we_new = 1'b1;
@@ -513,11 +513,11 @@ module montprod(
begin
reset_word_index_lsw = 1'b1;
bq_we = 1'b1;
- montprod_ctrl_new = CTRL_L_CALC_SA;
+ montprod_ctrl_new = CTRL_CALC_ADD;
montprod_ctrl_we = 1'b1;
end
- CTRL_L_CALC_SA:
+ CTRL_CALC_ADD:
begin
s_mux_new = SMUX_ADD;
@@ -526,30 +526,30 @@ module montprod(
reset_word_index_lsw = 1'b1;
first_iteration_new = 1'b0;
first_iteration_we = 1'b1;
- montprod_ctrl_new = CTRL_L_STALLPIPE_SA;
+ montprod_ctrl_new = CTRL_STALLPIPE_ADD;
montprod_ctrl_we = 1'b1;
end
end
- CTRL_L_STALLPIPE_SA:
+ CTRL_STALLPIPE_ADD:
begin
- montprod_ctrl_new = CTRL_L_CALC_SDIV2;
+ montprod_ctrl_new = CTRL_CALC_SDIV2;
montprod_ctrl_we = 1'b1;
reset_word_index_msw = 1'b1;
end
- CTRL_L_CALC_SDIV2:
+ CTRL_CALC_SDIV2:
begin
s_mux_new = SMUX_SHR;
if (word_index_reg == length_m1)
begin
- montprod_ctrl_new = CTRL_L_STALLPIPE_D2;
+ montprod_ctrl_new = CTRL_STALLPIPE_SDIV2;
montprod_ctrl_we = 1'b1;
end
end
- CTRL_L_STALLPIPE_D2:
+ CTRL_STALLPIPE_SDIV2:
begin
loop_ctr_dec = 1'b1;
montprod_ctrl_new = CTRL_LOOP_ITER;