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-rw-r--r--techlibs/xilinx/Makefile.inc1
-rw-r--r--techlibs/xilinx/abc_ff.v186
-rw-r--r--techlibs/xilinx/abc_xc7.box43
-rw-r--r--techlibs/xilinx/cells_sim.v36
-rw-r--r--techlibs/xilinx/synth_xilinx.cc8
-rw-r--r--techlibs/xilinx/xc7_brams_bb.v18
6 files changed, 272 insertions, 20 deletions
diff --git a/techlibs/xilinx/Makefile.inc b/techlibs/xilinx/Makefile.inc
index 2c6e7432e..a9e0c5c7b 100644
--- a/techlibs/xilinx/Makefile.inc
+++ b/techlibs/xilinx/Makefile.inc
@@ -39,6 +39,7 @@ $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/ff_map.v))
$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/lut_map.v))
$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/mux_map.v))
+$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc_ff.v))
$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc_xc7.box))
$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc_xc7.lut))
$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc_xc7_nowide.lut))
diff --git a/techlibs/xilinx/abc_ff.v b/techlibs/xilinx/abc_ff.v
new file mode 100644
index 000000000..36e1a08e4
--- /dev/null
+++ b/techlibs/xilinx/abc_ff.v
@@ -0,0 +1,186 @@
+/*
+ * yosys -- Yosys Open SYnthesis Suite
+ *
+ * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
+ * 2019 Eddie Hung <eddie@fpgeh.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+// ============================================================================
+
+// Max delays from https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf#L237-L251
+
+module FDRE (output reg Q, input C, CE, D, R);
+ parameter [0:0] INIT = 1'b0;
+ parameter [0:0] IS_C_INVERTED = 1'b0;
+ parameter [0:0] IS_D_INVERTED = 1'b0;
+ parameter [0:0] IS_R_INVERTED = 1'b0;
+ wire \$nextQ ;
+ \$__ABC_FDRE #(
+ .INIT(INIT),
+ .IS_C_INVERTED(IS_C_INVERTED),
+ .IS_D_INVERTED(IS_D_INVERTED),
+ .IS_R_INVERTED(IS_R_INVERTED)
+ ) _TECHMAP_REPLACE_ (
+ .D(D), .Q(\$nextQ ), .\$pastQ (Q), .C(C), .CE(CE), .R(R)
+ );
+ \$__ABC_FF_ abc_dff (.D(\$nextQ ), .Q(Q));
+endmodule
+module FDRE_1 (output reg Q, input C, CE, D, R);
+ parameter [0:0] INIT = 1'b0;
+ wire \$nextQ ;
+ \$__ABC_FDRE_1 #(.INIT(|0)
+ ) _TECHMAP_REPLACE_ (
+ .D(D), .Q(\$nextQ ), .\$pastQ (Q), .C(C), .CE(CE), .R(R)
+ );
+ \$__ABC_FF_ abc_dff (.D(\$nextQ ), .Q(Q));
+endmodule
+
+module FDCE (output reg Q, input C, CE, D, CLR);
+ parameter [0:0] INIT = 1'b0;
+ parameter [0:0] IS_C_INVERTED = 1'b0;
+ parameter [0:0] IS_D_INVERTED = 1'b0;
+ parameter [0:0] IS_CLR_INVERTED = 1'b0;
+ wire \$nextQ , \$currQ ;
+ \$__ABC_FDCE #(
+ .INIT(INIT),
+ .IS_C_INVERTED(IS_C_INVERTED),
+ .IS_D_INVERTED(IS_D_INVERTED),
+ .IS_CLR_INVERTED(IS_CLR_INVERTED)
+ ) _TECHMAP_REPLACE_ (
+ .D(D), .Q(\$nextQ ), .\$pastQ (Q), .C(C), .CE(CE), .CLR(CLR)
+ );
+ \$__ABC_FF_ abc_dff (.D(\$nextQ ), .Q(\$currQ ));
+ \$__ABC_ASYNC abc_async (.A(\$currQ ), .S(CLR), .Y(Q));
+endmodule
+module FDCE_1 (output reg Q, input C, CE, D, CLR);
+ parameter [0:0] INIT = 1'b0;
+ wire \$nextQ , \$currQ ;
+ \$__ABC_FDCE_1 #(
+ .INIT(INIT)
+ ) _TECHMAP_REPLACE_ (
+ .D(D), .Q(\$nextQ ), .\$pastQ (Q), .C(C), .CE(CE), .CLR(CLR)
+ );
+ \$__ABC_FF_ abc_dff (.D(\$nextQ ), .Q(\$currQ ));
+ \$__ABC_ASYNC abc_async (.A(\$currQ ), .S(CLR), .Y(Q));
+endmodule
+
+module FDPE (output reg Q, input C, CE, D, PRE);
+ parameter [0:0] INIT = 1'b0;
+ parameter [0:0] IS_C_INVERTED = 1'b0;
+ parameter [0:0] IS_D_INVERTED = 1'b0;
+ parameter [0:0] IS_PRE_INVERTED = 1'b0;
+ wire \$nextQ , \$currQ ;
+ \$__ABC_FDPE #(
+ .INIT(INIT),
+ .IS_C_INVERTED(IS_C_INVERTED),
+ .IS_D_INVERTED(IS_D_INVERTED),
+ .IS_PRE_INVERTED(IS_PRE_INVERTED)
+ ) _TECHMAP_REPLACE_ (
+ .D(D), .Q(\$nextQ ), .\$pastQ (Q), .C(C), .CE(CE), .PRE(PRE)
+ );
+ \$__ABC_FF_ abc_dff (.D(\$nextQ ), .Q(\$currQ ));
+ \$__ABC_ASYNC abc_async (.A(\$currQ ), .S(PRE), .Y(Q));
+endmodule
+module FDPE_1 (output reg Q, input C, CE, D, PRE);
+ parameter [0:0] INIT = 1'b0;
+ wire \$nextQ , \$currQ ;
+ \$__ABC_FDPE_1 #(
+ .INIT(INIT)
+ ) _TECHMAP_REPLACE_ (
+ .D(D), .Q(\$nextQ ), .\$pastQ (Q), .C(C), .CE(CE), .PRE(PRE)
+ );
+ \$__ABC_FF_ abc_dff (.D(\$nextQ ), .Q(\$currQ ));
+ \$__ABC_ASYNC abc_async (.A(\$currQ ), .S(PRE), .Y(Q));
+endmodule
+
+`ifndef _ABC
+module \$__ABC_FF_ (input C, D, output Q);
+endmodule
+
+(* abc_box_id = 1000 *)
+module \$__ABC_ASYNC (input A, S, output Y);
+endmodule
+
+(* abc_box_id=1001, lib_whitebox, abc_flop="FDRE", abc_flop_clk_pol="!IS_C_INVERTED", abc_flop_en_pol=1 *)
+module \$__ABC_FDRE ((* abc_flop_q, abc_arrival=303 *) output Q,
+ (* abc_flop_clk *) input C,
+ (* abc_flop_en *) input CE,
+ (* abc_flop_d *) input D,
+ input R, \$pastQ );
+ parameter [0:0] INIT = 1'b0;
+ parameter [0:0] IS_C_INVERTED = 1'b0;
+ parameter [0:0] IS_D_INVERTED = 1'b0;
+ parameter [0:0] IS_R_INVERTED = 1'b0;
+ assign Q = (R ^ IS_R_INVERTED) ? 1'b0 : (CE ? (D ^ IS_D_INVERTED) : \$pastQ );
+endmodule
+
+(* abc_box_id = 1002, lib_whitebox, abc_flop = "FDRE_1", abc_flop_clk_pol=1, abc_flop_en_pol=1 *)
+module \$__ABC_FDRE_1 ((* abc_flop_q, abc_arrival=303 *) output Q,
+ (* abc_flop_clk *) input C,
+ (* abc_flop_en *) input CE,
+ (* abc_flop_d *) input D,
+ input R, \$pastQ );
+ parameter [0:0] INIT = 1'b0;
+ assign Q = R ? 1'b0 : (CE ? D : \$pastQ );
+endmodule
+
+(* abc_box_id = 1003, lib_whitebox, abc_flop = "FDCE", abc_flop_clk_pol="!IS_C_INVERTED", abc_flop_en_pol=1 *)
+module \$__ABC_FDCE ((* abc_flop_q, abc_arrival=303 *) output Q,
+ (* abc_flop_clk *) input C,
+ (* abc_flop_en *) input CE,
+ (* abc_flop_d *) input D,
+ input CLR, \$pastQ );
+ parameter [0:0] INIT = 1'b0;
+ parameter [0:0] IS_C_INVERTED = 1'b0;
+ parameter [0:0] IS_D_INVERTED = 1'b0;
+ parameter [0:0] IS_CLR_INVERTED = 1'b0;
+ assign Q = (CE && !(CLR ^ IS_CLR_INVERTED)) ? (D ^ IS_D_INVERTED) : \$pastQ ;
+endmodule
+
+(* abc_box_id = 1004, lib_whitebox, abc_flop = "FDCE_1", abc_flop_clk_pol=1, abc_flop_en_pol=1 *)
+module \$__ABC_FDCE_1 ((* abc_flop_q, abc_arrival=303 *) output Q,
+ (* abc_flop_clk *) input C,
+ (* abc_flop_en *) input CE,
+ (* abc_flop_d *) input D,
+ input CLR, \$pastQ );
+ parameter [0:0] INIT = 1'b0;
+ assign Q = (CE && !CLR) ? D : \$pastQ ;
+endmodule
+
+(* abc_box_id=1005, lib_whitebox, abc_flop="FDPE", abc_flop_clk_pol="!IS_C_INVERTED", abc_flop_en_pol=1 *)
+module \$__ABC_FDPE ((* abc_flop_q, abc_arrival=303 *) output Q,
+ (* abc_flop_clk *) input C,
+ (* abc_flop_en *) input CE,
+ (* abc_flop_d *) input D,
+ input PRE, \$pastQ );
+ parameter [0:0] INIT = 1'b0;
+ parameter [0:0] IS_C_INVERTED = 1'b0;
+ parameter [0:0] IS_D_INVERTED = 1'b0;
+ parameter [0:0] IS_PRE_INVERTED = 1'b0;
+ assign Q = (CE && !(PRE ^ IS_PRE_INVERTED)) ? (D ^ IS_D_INVERTED) : \$pastQ ;
+endmodule
+
+(* abc_box_id=1006, lib_whitebox, abc_flop="FDPE_1", abc_flop_clk_pol=1, abc_flop_en_pol=1 *)
+module \$__ABC_FDPE_1 ((* abc_flop_q, abc_arrival=303 *) output Q,
+ (* abc_flop_clk *) input C,
+ (* abc_flop_en *) input CE,
+ (* abc_flop_d *) input D,
+ input PRE, \$pastQ );
+ parameter [0:0] INIT = 1'b0;
+ assign Q = (CE && !PRE) ? D : \$pastQ ;
+endmodule
+
+`endif
diff --git a/techlibs/xilinx/abc_xc7.box b/techlibs/xilinx/abc_xc7.box
index 3789ff350..16040662c 100644
--- a/techlibs/xilinx/abc_xc7.box
+++ b/techlibs/xilinx/abc_xc7.box
@@ -1,4 +1,5 @@
# Max delays from https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLL_L.sdf
+# https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf
# NB: Inputs/Outputs must be ordered alphabetically
# (with exceptions for carry in/out)
@@ -14,6 +15,7 @@ F7MUX 1 1 3 1
MUXF8 2 1 3 1
104 94 273
+# Box containing MUXF7.[AB] + MUXF8
# Inputs: I0 I1 I2 I3 S0 S1
# Outputs: O
$__MUXF78 3 1 6 1
@@ -56,3 +58,44 @@ RAM64X1D 6 0 15 2
RAM128X1D 7 0 17 2
- - - - - - - - 1009 998 839 774 605 494 450 - -
1047 1036 877 812 643 532 478 - - - - - - - - - -
+
+# Box to emulate async behaviour of FD[CP]*
+# Inputs: A S
+# Outputs: Y
+$__ABC_ASYNC 1000 0 2 1
+0 764
+
+# The following FD*.{CE,R,CLR,PRE) are offset by 46ps to
+# reflect the -46ps Tsu
+# https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf#L237-L251
+# https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf#L265-L277
+
+# Inputs: C CE D R \$pastQ
+# Outputs: Q
+FDRE 1001 1 5 1
+0 151 0 446 0
+
+# Inputs: C CE D R \$pastQ
+# Outputs: Q
+FDRE_1 1002 1 5 1
+0 151 0 446 0
+
+# Inputs: C CE CLR D \$pastQ
+# Outputs: Q
+FDCE 1003 1 5 1
+0 151 806 0 0
+
+# Inputs: C CE CLR D \$pastQ
+# Outputs: Q
+FDCE_1 1004 1 5 1
+0 151 806 0 0
+
+# Inputs: C CE D PRE \$pastQ
+# Outputs: Q
+FDPE 1005 1 5 1
+0 151 0 806 0
+
+# Inputs: C CE D PRE \$pastQ
+# Outputs: Q
+FDPE_1 1006 1 5 1
+0 151 0 806 0
diff --git a/techlibs/xilinx/cells_sim.v b/techlibs/xilinx/cells_sim.v
index 05e46b4e7..e5d9f480b 100644
--- a/techlibs/xilinx/cells_sim.v
+++ b/techlibs/xilinx/cells_sim.v
@@ -181,8 +181,14 @@ module XORCY(output O, input CI, LI);
assign O = CI ^ LI;
endmodule
-(* abc_box_id = 4, abc_carry="CI,CO", lib_whitebox *)
-module CARRY4(output [3:0] CO, O, input CI, CYINIT, input [3:0] DI, S);
+(* abc_box_id = 4, lib_whitebox *)
+module CARRY4(
+ (* abc_carry_out *) output [3:0] CO,
+ output [3:0] O,
+ (* abc_carry_in *) input CI,
+ input CYINIT,
+ input [3:0] DI, S
+);
assign O = S ^ {CO[2:0], CI | CYINIT};
assign CO[0] = S[0] ? CI | CYINIT : DI[0];
assign CO[1] = S[1] ? CO[0] : DI[1];
@@ -289,10 +295,12 @@ module FDPE_1 (output reg Q, input C, CE, D, PRE);
always @(negedge C, posedge PRE) if (PRE) Q <= 1'b1; else if (CE) Q <= D;
endmodule
-(* abc_box_id = 5, abc_scc_break="D,WE" *)
+(* abc_box_id = 5 *)
module RAM32X1D (
output DPO, SPO,
- input D, WCLK, WE,
+ (* abc_scc_break *) input D,
+ input WCLK,
+ (* abc_scc_break *) input WE,
input A0, A1, A2, A3, A4,
input DPRA0, DPRA1, DPRA2, DPRA3, DPRA4
);
@@ -307,10 +315,12 @@ module RAM32X1D (
always @(posedge clk) if (WE) mem[a] <= D;
endmodule
-(* abc_box_id = 6, abc_scc_break="D,WE" *)
+(* abc_box_id = 6 *)
module RAM64X1D (
output DPO, SPO,
- input D, WCLK, WE,
+ (* abc_scc_break *) input D,
+ input WCLK,
+ (* abc_scc_break *) input WE,
input A0, A1, A2, A3, A4, A5,
input DPRA0, DPRA1, DPRA2, DPRA3, DPRA4, DPRA5
);
@@ -325,10 +335,12 @@ module RAM64X1D (
always @(posedge clk) if (WE) mem[a] <= D;
endmodule
-(* abc_box_id = 7, abc_scc_break="D,WE" *)
+(* abc_box_id = 7 *)
module RAM128X1D (
output DPO, SPO,
- input D, WCLK, WE,
+ (* abc_scc_break *) input D,
+ input WCLK,
+ (* abc_scc_break *) input WE,
input [6:0] A, DPRA
);
parameter INIT = 128'h0;
@@ -341,7 +353,8 @@ module RAM128X1D (
endmodule
module SRL16E (
- output Q,
+ // Max delay from: https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLM_R.sdf#L904-L905
+ (* abc_arrival=1472 *) output Q,
input A0, A1, A2, A3, CE, CLK, D
);
parameter [15:0] INIT = 16'h0000;
@@ -359,8 +372,9 @@ module SRL16E (
endmodule
module SRLC32E (
- output Q,
- output Q31,
+ // Max delay from: https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLM_R.sdf#L904-L905
+ (* abc_arrival=1472 *) output Q,
+ (* abc_arrival=1114 *) output Q31,
input [4:0] A,
input CE, CLK, D
);
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc
index d143c6823..6456dbdf4 100644
--- a/techlibs/xilinx/synth_xilinx.cc
+++ b/techlibs/xilinx/synth_xilinx.cc
@@ -376,6 +376,8 @@ struct SynthXilinxPass : public ScriptPass
std::string techmap_args = "-map +/techmap.v -D _ABC -map +/xilinx/cells_map.v";
if (widemux > 0)
techmap_args += stringf(" -D MIN_MUX_INPUTS=%d", widemux);
+ if (abc9)
+ techmap_args += " -map +/xilinx/ff_map.v -D _ABC -map +/xilinx/abc_ff.v";
run("techmap " + techmap_args);
run("clean");
}
@@ -387,6 +389,7 @@ struct SynthXilinxPass : public ScriptPass
else if (abc9) {
if (family != "xc7")
log_warning("'synth_xilinx -abc9' currently supports '-family xc7' only.\n");
+ run("read_verilog -icells -lib +/xilinx/abc_ff.v");
if (nowidelut)
run("abc9 -lut +/xilinx/abc_xc7_nowide.lut -box +/xilinx/abc_xc7.box -W " + std::to_string(XC7_WIRE_DELAY));
else
@@ -404,7 +407,10 @@ struct SynthXilinxPass : public ScriptPass
// has performed any necessary retiming
if (!nosrl || help_mode)
run("shregmap -minlen 3 -init -params -enpol any_or_none", "(skip if '-nosrl')");
- run("techmap -map +/xilinx/lut_map.v -map +/xilinx/ff_map.v -map +/xilinx/cells_map.v");
+ if (abc9)
+ run("techmap -map +/xilinx/lut_map.v -map +/xilinx/cells_map.v");
+ else
+ run("techmap -map +/xilinx/lut_map.v -map +/xilinx/cells_map.v -map +/xilinx/ff_map.v");
run("dffinit -ff FDRE Q INIT -ff FDCE Q INIT -ff FDPE Q INIT -ff FDSE Q INIT "
"-ff FDRE_1 Q INIT -ff FDCE_1 Q INIT -ff FDPE_1 Q INIT -ff FDSE_1 Q INIT");
run("clean");
diff --git a/techlibs/xilinx/xc7_brams_bb.v b/techlibs/xilinx/xc7_brams_bb.v
index a682ba4a7..0e8cb406c 100644
--- a/techlibs/xilinx/xc7_brams_bb.v
+++ b/techlibs/xilinx/xc7_brams_bb.v
@@ -1,3 +1,5 @@
+// Max delays from https://github.com/SymbiFlow/prjxray-db/blob/f8e0364116b2983ac72a3dc8c509ea1cc79e2e3d/artix7/timings/BRAM_L.sdf#L138-L147
+
module RAMB18E1 (
input CLKARDCLK,
input CLKBWRCLK,
@@ -19,10 +21,10 @@ module RAMB18E1 (
input [1:0] WEA,
input [3:0] WEBWE,
- output [15:0] DOADO,
- output [15:0] DOBDO,
- output [1:0] DOPADOP,
- output [1:0] DOPBDOP
+ (* abc_arrival=2454 *) output [15:0] DOADO,
+ (* abc_arrival=2454 *) output [15:0] DOBDO,
+ (* abc_arrival=2454 *) output [1:0] DOPADOP,
+ (* abc_arrival=2454 *) output [1:0] DOPBDOP
);
parameter INITP_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INITP_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
@@ -143,10 +145,10 @@ module RAMB36E1 (
input [3:0] WEA,
input [7:0] WEBWE,
- output [31:0] DOADO,
- output [31:0] DOBDO,
- output [3:0] DOPADOP,
- output [3:0] DOPBDOP
+ (* abc_arrival=2454 *) output [31:0] DOADO,
+ (* abc_arrival=2454 *) output [31:0] DOBDO,
+ (* abc_arrival=2454 *) output [3:0] DOPADOP,
+ (* abc_arrival=2454 *) output [3:0] DOPBDOP
);
parameter INITP_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INITP_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 01:53:26 +0000