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intel_alm: Add IO buffer insertion

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Signed-off-by: gatecat <gatecat@ds0.me>
This commit is contained in:
gatecat 2021-05-15 14:23:22 +01:00
parent 3421979f00
commit 5dba138c87
19 changed files with 166 additions and 46 deletions
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1
techlibs/intel_alm/Makefile.inc
View file

@ -13,6 +13,7 @@ $(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/df
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/dsp_sim.v))
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/dsp_map.v))
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/mem_sim.v))
$(eval $(call add_share_file,share/intel_alm/common,techlibs/intel_alm/common/misc_sim.v))
$(eval $(call add_share_file,share/intel_alm/cyclonev,techlibs/intel_alm/cyclonev/cells_sim.v))

35
techlibs/intel_alm/common/megafunction_bb.v
View file

@ -627,3 +627,38 @@ output [port_b_data_width-1:0] portbdataout;
input clk0, portawe, portbre;
endmodule
(* blackbox *)
module cyclone10gx_io_ibuf(i, ibar, dynamicterminationcontrol, o);
parameter differential_mode ="false";
parameter bus_hold = "false";
parameter simulate_z_as = "Z";
parameter lpm_type = "cyclone10gx_io_ibuf";
(* iopad_external_pin *) input i;
(* iopad_external_pin *) input ibar;
input dynamicterminationcontrol;
output o;
endmodule
(* blackbox *)
module cyclone10gx_io_obuf(i, oe, dynamicterminationcontrol, seriesterminationcontrol, parallelterminationcontrol, devoe, o, obar);
parameter open_drain_output = "false";
parameter bus_hold = "false";
parameter shift_series_termination_control = "false";
parameter sim_dynamic_termination_control_is_connected = "false";
parameter lpm_type = "cyclone10gx_io_obuf";
input i;
input oe;
input devoe;
input dynamicterminationcontrol;
input [15:0] seriesterminationcontrol;
input [15:0] parallelterminationcontrol;
(* iopad_external_pin *) output o;
(* iopad_external_pin *) output obar;
endmodule

12
techlibs/intel_alm/common/misc_sim.v Normal file
View file

@ -0,0 +1,12 @@
module MISTRAL_IB((* iopad_external_pin *) input PAD, output O);
assign O = PAD;
endmodule
module MISTRAL_OB((* iopad_external_pin *) output PAD, input I);
assign PAD = I;
endmodule
module MISTRAL_IO((* iopad_external_pin *) inout PAD, input I, input OE, output O);
assign PAD = OE ? I : 1'bz;
assign O = PAD;
endmodule

44
techlibs/intel_alm/common/quartus_rename.v
View file

@ -2,11 +2,15 @@
`define LCELL cyclonev_lcell_comb
`define MAC cyclonev_mac
`define MLAB cyclonev_mlab_cell
`define IBUF cyclonev_io_ibuf
`define OBUF cyclonev_io_obuf
`endif
`ifdef cyclone10gx
`define LCELL cyclone10gx_lcell_comb
`define MAC cyclone10gx_mac
`define MLAB cyclone10gx_mlab_cell
`define IBUF cyclone10gx_io_ibuf
`define OBUF cyclone10gx_io_obuf
`endif
module __MISTRAL_VCC(output Q);
@ -233,3 +237,43 @@ parameter B_SIGNED = 1;
);
endmodule
module MISTRAL_IB(input PAD, output O);
`IBUF #(
.bus_hold("false"),
.differential_mode("false")
) _TECHMAP_REPLACE_ (
.i(PAD),
.o(O)
);
endmodule
module MISTRAL_OB(output PAD, input I, OE);
`OBUF #(
.bus_hold("false"),
.differential_mode("false")
) _TECHMAP_REPLACE_ (
.i(I),
.o(PAD),
.oe(OE)
);
endmodule
module MISTRAL_IO(output PAD, input I, OE, output O);
`IBUF #(
.bus_hold("false"),
.differential_mode("false")
) ibuf (
.i(PAD),
.o(O)
);
`OBUF #(
.bus_hold("false"),
.differential_mode("false")
) obuf (
.i(I),
.o(PAD),
.oe(OE)
);
endmodule

28
techlibs/intel_alm/cyclonev/cells_sim.v
View file

@ -26,16 +26,34 @@ endmodule // GND
/* Altera Cyclone V devices Input Buffer Primitive */
module cyclonev_io_ibuf
(output o, input i, input ibar);
assign ibar = ibar;
(output o,
(* iopad_external_pin *) input i,
(* iopad_external_pin *) input ibar,
input dynamicterminationcontrol);
parameter differential_mode = "false";
parameter bus_hold = "false";
parameter simulate_z_as = "Z";
parameter lpm_type = "cyclonev_io_ibuf";
assign o = i;
endmodule // cyclonev_io_ibuf
/* Altera Cyclone V devices Output Buffer Primitive */
module cyclonev_io_obuf
(output o, input i, input oe);
assign o = i;
assign oe = oe;
((* iopad_external_pin *) output o,
input i, oe, dynamicterminationcontrol,
input [15:0] seriesterminationcontrol, parallelterminationcontrol,
input devoe,
(* iopad_external_pin *) output obar);
parameter open_drain_output = "false";
parameter bus_hold = "false";
parameter shift_series_termination_control = "false";
parameter sim_dynamic_termination_control_is_connected = "false";
parameter lpm_type = "cyclonev_io_obuf";
assign o = oe ? i : 1'bz;
endmodule // cyclonev_io_obuf
/* Altera Cyclone V LUT Primitive */

14
techlibs/intel_alm/synth_intel_alm.cc
View file

@ -72,13 +72,16 @@ struct SynthIntelALMPass : public ScriptPass {
log(" -nodsp\n");
log(" do not map multipliers to MISTRAL_MUL cells\n");
log("\n");
log(" -noiopad\n");
log(" do not instantiate IO buffers\n");
log("\n");
log("The following commands are executed by this synthesis command:\n");
help_script();
log("\n");
}
string top_opt, family_opt, bram_type, vout_file;
bool flatten, quartus, nolutram, nobram, dff, nodsp;
bool flatten, quartus, nolutram, nobram, dff, nodsp, noiopad;
void clear_flags() override
{
@ -92,6 +95,7 @@ struct SynthIntelALMPass : public ScriptPass {
nobram = false;
dff = false;
nodsp = false;
noiopad = false;
}
void execute(std::vector<std::string> args, RTLIL::Design *design) override
@ -146,6 +150,10 @@ struct SynthIntelALMPass : public ScriptPass {
dff = true;
continue;
}
if (args[argidx] == "-noiopad") {
noiopad = true;
continue;
}
break;
}
extra_args(args, argidx, design);
@ -183,8 +191,8 @@ struct SynthIntelALMPass : public ScriptPass {
run(stringf("read_verilog -specify -lib -D %s +/intel_alm/common/dff_sim.v", family_opt.c_str()));
run(stringf("read_verilog -specify -lib -D %s +/intel_alm/common/dsp_sim.v", family_opt.c_str()));
run(stringf("read_verilog -specify -lib -D %s +/intel_alm/common/mem_sim.v", family_opt.c_str()));
run(stringf("read_verilog -specify -lib -D %s +/intel_alm/common/misc_sim.v", family_opt.c_str()));
run(stringf("read_verilog -specify -lib -D %s -icells +/intel_alm/common/abc9_model.v", family_opt.c_str()));
// Misc and common cells
run("read_verilog -lib +/intel/common/altpll_bb.v");
run("read_verilog -lib +/intel_alm/common/megafunction_bb.v");
@ -231,6 +239,8 @@ struct SynthIntelALMPass : public ScriptPass {
}
}
run("alumacc");
if (!noiopad)
run("iopadmap -bits -outpad MISTRAL_OB I:PAD -inpad MISTRAL_IB O:PAD -toutpad MISTRAL_IO OE:O:PAD -tinoutpad MISTRAL_IO OE:O:I:PAD A:top", "(unless -noiopad)");
run("techmap -map +/intel_alm/common/arith_alm_map.v -map +/intel_alm/common/dsp_map.v");
run("opt");
run("memory -nomap");