riscv
/
yosys
mirror of https://github.com/YosysHQ/yosys.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

gatemate: Enable register initialization

This commit is contained in:
Patrick Urban 2023-02-15 17:29:01 +01:00
parent 1c667fab2b
commit 2c7ba0e752
3 changed files with 16 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
techlibs/gatemate/cells_sim.v
View File

@ -242,7 +242,8 @@ module CC_DFF #(
parameter [0:0] CLK_INV = 1'b0,
parameter [0:0] EN_INV = 1'b0,
parameter [0:0] SR_INV = 1'b0,
parameter [0:0] SR_VAL = 1'b0
parameter [0:0] SR_VAL = 1'b0,
parameter [0:0] INIT = 1'bx
)(
input D,
(* clkbuf_sink *)
@ -256,7 +257,7 @@ module CC_DFF #(
assign en = (EN_INV) ? ~EN : EN;
assign sr = (SR_INV) ? ~SR : SR;
initial Q = 1'bX;
initial Q = INIT;
always @(posedge clk or posedge sr)
begin
@ -272,9 +273,10 @@ endmodule
module CC_DLT #(
parameter [0:0] G_INV = 1'b0,
parameter [0:0] G_INV = 1'b0,
parameter [0:0] SR_INV = 1'b0,
parameter [0:0] SR_VAL = 1'b0
parameter [0:0] SR_VAL = 1'b0,
parameter [0:0] INIT = 1'bx
)(
input D,
input G,
@ -285,7 +287,7 @@ module CC_DLT #(
assign en = (G_INV) ? ~G : G;
assign sr = (SR_INV) ? ~SR : SR;
initial Q = 1'bX;
initial Q = INIT;
always @(*)
begin

10
techlibs/gatemate/reg_map.v
View File

@ -21,25 +21,31 @@
module \$_DFFE_xxxx_ (input D, C, R, E, output Q);
parameter _TECHMAP_CELLTYPE_ = "";
parameter _TECHMAP_WIREINIT_Q_ = 1'bx;
CC_DFF #(
.CLK_INV(_TECHMAP_CELLTYPE_[39:32] == "N"),
.EN_INV(_TECHMAP_CELLTYPE_[15:8] == "N"),
.SR_INV(_TECHMAP_CELLTYPE_[31:24] == "N"),
.SR_VAL(_TECHMAP_CELLTYPE_[23:16] == "1")
.SR_VAL(_TECHMAP_CELLTYPE_[23:16] == "1"),
.INIT(_TECHMAP_WIREINIT_Q_)
) _TECHMAP_REPLACE_ (.D(D), .EN(E), .CLK(C), .SR(R), .Q(Q));
wire _TECHMAP_REMOVEINIT_Q_ = 1;
endmodule
(* techmap_celltype = "$_DLATCH_[NP][NP][01]_" *)
module \$_DLATCH_xxx_ (input E, R, D, output Q);
parameter _TECHMAP_CELLTYPE_ = "";
parameter _TECHMAP_WIREINIT_Q_ = 1'bx;
CC_DLT #(
.G_INV(_TECHMAP_CELLTYPE_[31:24] == "N"),
.SR_INV(_TECHMAP_CELLTYPE_[23:16] == "N"),
.SR_VAL(_TECHMAP_CELLTYPE_[15:8] == "1")
.SR_VAL(_TECHMAP_CELLTYPE_[15:8] == "1"),
.INIT(_TECHMAP_WIREINIT_Q_)
) _TECHMAP_REPLACE_ (.D(D), .G(E), .SR(R), .Q(Q));
wire _TECHMAP_REMOVEINIT_Q_ = 1;
endmodule

2
techlibs/gatemate/synth_gatemate.cc
View File

@ -283,7 +283,7 @@ struct SynthGateMatePass : public ScriptPass
if (check_label("map_regs"))
{
run("opt_clean");
run("dfflegalize -cell $_DFFE_????_ x -cell $_DLATCH_???_ x");
run("dfflegalize -cell $_DFFE_????_ 01 -cell $_DLATCH_???_ 01");
run("techmap -map +/gatemate/reg_map.v");
run("opt_expr -mux_undef");
run("simplemap");