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Merge pull request #5418 from yrabbit/gw5-dff-and-memory

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Gowin. Reduce the range of flip-flop types.
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Emil J 2025-10-13 17:26:56 +02:00 • committed by GitHub
commit 71eadc9ab5
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GPG key ID: B5690EEEBB952194
3 changed files with 422 additions and 6 deletions
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1
techlibs/gowin/Makefile.inc
View file

@ -8,6 +8,7 @@ $(eval $(call add_share_file,share/gowin,techlibs/gowin/cells_xtra_gw2a.v))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/cells_xtra_gw5a.v))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/arith_map.v))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/brams_map.v))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/brams_map_gw5a.v))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/brams.txt))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/lutrams_map.v))
$(eval $(call add_share_file,share/gowin,techlibs/gowin/lutrams.txt))

399
techlibs/gowin/brams_map_gw5a.v Normal file
View file

@ -0,0 +1,399 @@
`define DEF_FUNCS \
function [255:0] init_slice_x8; \
input integer idx; \
integer i; \
for (i = 0; i < 32; i = i + 1) begin \
init_slice_x8[i*8+:8] = INIT[(idx * 32 + i) * 9+:8]; \
end \
endfunction \
function [287:0] init_slice_x9; \
input integer idx; \
init_slice_x9 = INIT[idx * 288+:288]; \
endfunction \
`define x8_width(width) (width / 9 * 8 + width % 9)
`define x8_rd_data(data) {1'bx, data[31:24], 1'bx, data[23:16], 1'bx, data[15:8], 1'bx, data[7:0]}
`define x8_wr_data(data) {data[34:27], data[25:18], data[16:9], data[7:0]}
`define addrbe_always(width, addr) (width < 18 ? addr : width == 18 ? {addr[13:4], 4'b0011} : {addr[13:5], 5'b01111})
`define INIT(func) \
.INIT_RAM_00(func('h00)), \
.INIT_RAM_01(func('h01)), \
.INIT_RAM_02(func('h02)), \
.INIT_RAM_03(func('h03)), \
.INIT_RAM_04(func('h04)), \
.INIT_RAM_05(func('h05)), \
.INIT_RAM_06(func('h06)), \
.INIT_RAM_07(func('h07)), \
.INIT_RAM_08(func('h08)), \
.INIT_RAM_09(func('h09)), \
.INIT_RAM_0A(func('h0a)), \
.INIT_RAM_0B(func('h0b)), \
.INIT_RAM_0C(func('h0c)), \
.INIT_RAM_0D(func('h0d)), \
.INIT_RAM_0E(func('h0e)), \
.INIT_RAM_0F(func('h0f)), \
.INIT_RAM_10(func('h10)), \
.INIT_RAM_11(func('h11)), \
.INIT_RAM_12(func('h12)), \
.INIT_RAM_13(func('h13)), \
.INIT_RAM_14(func('h14)), \
.INIT_RAM_15(func('h15)), \
.INIT_RAM_16(func('h16)), \
.INIT_RAM_17(func('h17)), \
.INIT_RAM_18(func('h18)), \
.INIT_RAM_19(func('h19)), \
.INIT_RAM_1A(func('h1a)), \
.INIT_RAM_1B(func('h1b)), \
.INIT_RAM_1C(func('h1c)), \
.INIT_RAM_1D(func('h1d)), \
.INIT_RAM_1E(func('h1e)), \
.INIT_RAM_1F(func('h1f)), \
.INIT_RAM_20(func('h20)), \
.INIT_RAM_21(func('h21)), \
.INIT_RAM_22(func('h22)), \
.INIT_RAM_23(func('h23)), \
.INIT_RAM_24(func('h24)), \
.INIT_RAM_25(func('h25)), \
.INIT_RAM_26(func('h26)), \
.INIT_RAM_27(func('h27)), \
.INIT_RAM_28(func('h28)), \
.INIT_RAM_29(func('h29)), \
.INIT_RAM_2A(func('h2a)), \
.INIT_RAM_2B(func('h2b)), \
.INIT_RAM_2C(func('h2c)), \
.INIT_RAM_2D(func('h2d)), \
.INIT_RAM_2E(func('h2e)), \
.INIT_RAM_2F(func('h2f)), \
.INIT_RAM_30(func('h30)), \
.INIT_RAM_31(func('h31)), \
.INIT_RAM_32(func('h32)), \
.INIT_RAM_33(func('h33)), \
.INIT_RAM_34(func('h34)), \
.INIT_RAM_35(func('h35)), \
.INIT_RAM_36(func('h36)), \
.INIT_RAM_37(func('h37)), \
.INIT_RAM_38(func('h38)), \
.INIT_RAM_39(func('h39)), \
.INIT_RAM_3A(func('h3a)), \
.INIT_RAM_3B(func('h3b)), \
.INIT_RAM_3C(func('h3c)), \
.INIT_RAM_3D(func('h3d)), \
.INIT_RAM_3E(func('h3e)), \
.INIT_RAM_3F(func('h3f)),
module $__GOWIN_SP_ (...);
parameter INIT = 0;
parameter OPTION_RESET_MODE = "SYNC";
parameter PORT_A_WIDTH = 36;
parameter PORT_A_OPTION_WRITE_MODE = 0;
input PORT_A_CLK;
input PORT_A_CLK_EN;
input PORT_A_WR_EN;
input PORT_A_RD_SRST;
input PORT_A_RD_ARST;
input [13:0] PORT_A_ADDR;
input [PORT_A_WIDTH-1:0] PORT_A_WR_DATA;
output [PORT_A_WIDTH-1:0] PORT_A_RD_DATA;
`DEF_FUNCS
wire RST = OPTION_RESET_MODE == "SYNC" ? PORT_A_RD_SRST : PORT_A_RD_ARST;
wire [13:0] AD = `addrbe_always(PORT_A_WIDTH, PORT_A_ADDR);
generate
if (PORT_A_WIDTH < 9) begin
wire [31:0] DI = `x8_wr_data(PORT_A_WR_DATA);
wire [31:0] DO;
assign PORT_A_RD_DATA = `x8_rd_data(DO);
SP #(
`INIT(init_slice_x8)
.READ_MODE(1'b0),
.WRITE_MODE(PORT_A_OPTION_WRITE_MODE),
.BIT_WIDTH(`x8_width(PORT_A_WIDTH)),
.BLK_SEL(3'b000),
.RESET_MODE(OPTION_RESET_MODE),
) _TECHMAP_REPLACE_ (
.BLKSEL(3'b000),
.CLK(PORT_A_CLK),
.CE(PORT_A_CLK_EN),
.WRE(PORT_A_WR_EN),
.RESET(RST),
.OCE(1'b1),
.AD(AD),
.DI(DI),
.DO(DO),
);
end else begin
wire [35:0] DI = PORT_A_WR_DATA;
wire [35:0] DO;
assign PORT_A_RD_DATA = DO;
SPX9 #(
`INIT(init_slice_x9)
.READ_MODE(1'b0),
.WRITE_MODE(PORT_A_OPTION_WRITE_MODE),
.BIT_WIDTH(PORT_A_WIDTH),
.BLK_SEL(3'b000),
.RESET_MODE(OPTION_RESET_MODE),
) _TECHMAP_REPLACE_ (
.BLKSEL(3'b000),
.CLK(PORT_A_CLK),
.CE(PORT_A_CLK_EN),
.WRE(PORT_A_WR_EN),
.RESET(RST),
.OCE(1'b1),
.AD(AD),
.DI(DI),
.DO(DO),
);
end
endgenerate
endmodule
module $__GOWIN_DP_ (...);
parameter INIT = 0;
parameter OPTION_RESET_MODE = "SYNC";
parameter PORT_A_WIDTH = 18;
parameter PORT_A_OPTION_WRITE_MODE = 0;
parameter PORT_B_WIDTH = 18;
parameter PORT_B_OPTION_WRITE_MODE = 0;
input PORT_A_CLK;
input PORT_A_CLK_EN;
input PORT_A_WR_EN;
input PORT_A_RD_SRST;
input PORT_A_RD_ARST;
input [13:0] PORT_A_ADDR;
input [PORT_A_WIDTH-1:0] PORT_A_WR_DATA;
output [PORT_A_WIDTH-1:0] PORT_A_RD_DATA;
input PORT_B_CLK;
input PORT_B_CLK_EN;
input PORT_B_WR_EN;
input PORT_B_RD_SRST;
input PORT_B_RD_ARST;
input [13:0] PORT_B_ADDR;
input [PORT_A_WIDTH-1:0] PORT_B_WR_DATA;
output [PORT_A_WIDTH-1:0] PORT_B_RD_DATA;
`DEF_FUNCS
wire RSTA = OPTION_RESET_MODE == "SYNC" ? PORT_A_RD_SRST : PORT_A_RD_ARST;
wire RSTB = OPTION_RESET_MODE == "SYNC" ? PORT_B_RD_SRST : PORT_B_RD_ARST;
wire [13:0] ADA = `addrbe_always(PORT_A_WIDTH, PORT_A_ADDR);
wire [13:0] ADB = `addrbe_always(PORT_B_WIDTH, PORT_B_ADDR);
generate
if (PORT_A_WIDTH < 9 || PORT_B_WIDTH < 9) begin
wire [15:0] DIA = `x8_wr_data(PORT_A_WR_DATA);
wire [15:0] DIB = `x8_wr_data(PORT_B_WR_DATA);
wire [15:0] DOA;
wire [15:0] DOB;
assign PORT_A_RD_DATA = `x8_rd_data(DOA);
assign PORT_B_RD_DATA = `x8_rd_data(DOB);
DPB #(
`INIT(init_slice_x8)
.READ_MODE0(1'b0),
.READ_MODE1(1'b0),
.WRITE_MODE0(PORT_A_OPTION_WRITE_MODE),
.WRITE_MODE1(PORT_B_OPTION_WRITE_MODE),
.BIT_WIDTH_0(`x8_width(PORT_A_WIDTH)),
.BIT_WIDTH_1(`x8_width(PORT_B_WIDTH)),
.BLK_SEL_0(3'b000),
.BLK_SEL_1(3'b000),
.RESET_MODE(OPTION_RESET_MODE),
) _TECHMAP_REPLACE_ (
.BLKSELA(3'b000),
.BLKSELB(3'b000),
.CLKA(PORT_A_CLK),
.CEA(PORT_A_CLK_EN),
.WREA(PORT_A_WR_EN),
.RESETA(RSTA),
.OCEA(1'b1),
.ADA(ADA),
.DIA(DIA),
.DOA(DOA),
.CLKB(PORT_B_CLK),
.CEB(PORT_B_CLK_EN),
.WREB(PORT_B_WR_EN),
.RESETB(RSTB),
.OCEB(1'b1),
.ADB(ADB),
.DIB(DIB),
.DOB(DOB),
);
end else begin
wire [17:0] DIA = PORT_A_WR_DATA;
wire [17:0] DIB = PORT_B_WR_DATA;
wire [17:0] DOA;
wire [17:0] DOB;
assign PORT_A_RD_DATA = DOA;
assign PORT_B_RD_DATA = DOB;
DPX9B #(
`INIT(init_slice_x9)
.READ_MODE0(1'b0),
.READ_MODE1(1'b0),
.WRITE_MODE0(PORT_A_OPTION_WRITE_MODE),
.WRITE_MODE1(PORT_B_OPTION_WRITE_MODE),
.BIT_WIDTH_0(PORT_A_WIDTH),
.BIT_WIDTH_1(PORT_B_WIDTH),
.BLK_SEL_0(3'b000),
.BLK_SEL_1(3'b000),
.RESET_MODE(OPTION_RESET_MODE),
) _TECHMAP_REPLACE_ (
.BLKSELA(3'b000),
.BLKSELB(3'b000),
.CLKA(PORT_A_CLK),
.CEA(PORT_A_CLK_EN),
.WREA(PORT_A_WR_EN),
.RESETA(RSTA),
.OCEA(1'b1),
.ADA(ADA),
.DIA(DIA),
.DOA(DOA),
.CLKB(PORT_B_CLK),
.CEB(PORT_B_CLK_EN),
.WREB(PORT_B_WR_EN),
.RESETB(RSTB),
.OCEB(1'b1),
.ADB(ADB),
.DIB(DIB),
.DOB(DOB),
);
end
endgenerate
endmodule
module $__GOWIN_SDP_ (...);
parameter INIT = 0;
parameter OPTION_RESET_MODE = "SYNC";
parameter PORT_R_WIDTH = 18;
parameter PORT_W_WIDTH = 18;
input PORT_R_CLK;
input PORT_R_CLK_EN;
input PORT_R_RD_SRST;
input PORT_R_RD_ARST;
input [13:0] PORT_R_ADDR;
output [PORT_R_WIDTH-1:0] PORT_R_RD_DATA;
input PORT_W_CLK;
input PORT_W_CLK_EN;
input PORT_W_WR_EN;
input [13:0] PORT_W_ADDR;
input [PORT_W_WIDTH-1:0] PORT_W_WR_DATA;
`DEF_FUNCS
wire RST = OPTION_RESET_MODE == "SYNC" ? PORT_R_RD_SRST : PORT_R_RD_ARST;
wire [13:0] ADW = `addrbe_always(PORT_W_WIDTH, PORT_W_ADDR);
wire WRE = PORT_W_CLK_EN & PORT_W_WR_EN;
generate
if (PORT_W_WIDTH < 9 || PORT_R_WIDTH < 9) begin
wire [31:0] DI = `x8_wr_data(PORT_W_WR_DATA);
wire [31:0] DO;
assign PORT_R_RD_DATA = `x8_rd_data(DO);
SDPB #(
`INIT(init_slice_x8)
.READ_MODE(1'b0),
.BIT_WIDTH_0(`x8_width(PORT_W_WIDTH)),
.BIT_WIDTH_1(`x8_width(PORT_R_WIDTH)),
.BLK_SEL_0(3'b000),
.BLK_SEL_1(3'b000),
.RESET_MODE(OPTION_RESET_MODE),
) _TECHMAP_REPLACE_ (
.BLKSELA(3'b000),
.BLKSELB(3'b000),
.CLKA(PORT_W_CLK),
.CEA(WRE),
.ADA(ADW),
.DI(DI),
.CLKB(PORT_R_CLK),
.CEB(PORT_R_CLK_EN),
.RESET(RST),
.OCE(1'b1),
.ADB(PORT_R_ADDR),
.DO(DO),
);
end else begin
wire [35:0] DI = PORT_W_WR_DATA;
wire [35:0] DO;
assign PORT_R_RD_DATA = DO;
SDPX9B #(
`INIT(init_slice_x9)
.READ_MODE(1'b0),
.BIT_WIDTH_0(PORT_W_WIDTH),
.BIT_WIDTH_1(PORT_R_WIDTH),
.BLK_SEL_0(3'b000),
.BLK_SEL_1(3'b000),
.RESET_MODE(OPTION_RESET_MODE),
) _TECHMAP_REPLACE_ (
.BLKSELA(3'b000),
.BLKSELB(3'b000),
.CLKA(PORT_W_CLK),
.CEA(WRE),
.ADA(ADW),
.DI(DI),
.CLKB(PORT_R_CLK),
.CEB(PORT_R_CLK_EN),
.RESET(RST),
.OCE(1'b1),
.ADB(PORT_R_ADDR),
.DO(DO),
);
end
endgenerate
endmodule

20
techlibs/gowin/synth_gowin.cc
View file

@ -57,6 +57,9 @@ struct SynthGowinPass : public ScriptPass
log(" -nodffe\n");
log(" do not use flipflops with CE in output netlist\n");
log("\n");
log(" -strict-gw5a-dffs\n");
log(" use only DFFSE/DFFRE/DFFPE/DFFCE flipflops for the GW5A family\n");
log("\n");
log(" -nobram\n");
log(" do not use BRAM cells in output netlist\n");
log("\n");
@ -97,7 +100,7 @@ struct SynthGowinPass : public ScriptPass
}
string top_opt, vout_file, json_file, family;
bool retime, nobram, nolutram, flatten, nodffe, nowidelut, abc9, noiopads, noalu, no_rw_check;
bool retime, nobram, nolutram, flatten, nodffe, strict_gw5a_dffs, nowidelut, abc9, noiopads, noalu, no_rw_check;
void clear_flags() override
{
@ -109,6 +112,7 @@ struct SynthGowinPass : public ScriptPass
flatten = true;
nobram = false;
nodffe = false;
strict_gw5a_dffs = false;
nolutram = false;
nowidelut = false;
abc9 = true;
@ -165,6 +169,10 @@ struct SynthGowinPass : public ScriptPass
nodffe = true;
continue;
}
if (args[argidx] == "-strict-gw5a-dffs") {
strict_gw5a_dffs = true;
continue;
}
if (args[argidx] == "-noflatten") {
flatten = false;
continue;
@ -248,7 +256,7 @@ struct SynthGowinPass : public ScriptPass
args += " -no-auto-distributed";
}
run("memory_libmap -lib +/gowin/lutrams.txt -lib +/gowin/brams.txt" + args, "(-no-auto-block if -nobram, -no-auto-distributed if -nolutram)");
run("techmap -map +/gowin/lutrams_map.v -map +/gowin/brams_map.v");
run(stringf("techmap -map +/gowin/lutrams_map.v -map +/gowin/brams_map%s.v", family == "gw5a" ? "_gw5a" : ""));
}
if (check_label("map_ffram"))
@ -276,10 +284,18 @@ struct SynthGowinPass : public ScriptPass
if (check_label("map_ffs"))
{
run("opt_clean");
if (family == "gw5a") {
if (strict_gw5a_dffs) {
run("dfflegalize -cell $_SDFFE_PP?P_ r -cell $_DFFE_PP?P_ r");
} else {
run("dfflegalize -cell $_DFF_?_ 0 -cell $_SDFFE_PP?P_ r -cell $_DFFE_PP?P_ r");
}
} else {
if (nodffe)
run("dfflegalize -cell $_DFF_?_ 0 -cell $_SDFF_?P?_ r -cell $_DFF_?P?_ r");
else
run("dfflegalize -cell $_DFF_?_ 0 -cell $_DFFE_?P_ 0 -cell $_SDFF_?P?_ r -cell $_SDFFE_?P?P_ r -cell $_DFF_?P?_ r -cell $_DFFE_?P?P_ r");
}
run("techmap -map +/gowin/cells_map.v");
run("opt_expr -mux_undef");
run("simplemap");