diff options
| -rw-r--r-- | examples/igloo2/example.v | 3 | ||||
| -rw-r--r-- | examples/igloo2/libero.tcl | 2 | ||||
| -rw-r--r-- | techlibs/sf2/Makefile.inc | 1 | ||||
| -rw-r--r-- | techlibs/sf2/cells_sim.v | 21 | ||||
| -rw-r--r-- | techlibs/sf2/sf2_iobs.cc | 130 | ||||
| -rw-r--r-- | techlibs/sf2/synth_sf2.cc | 17 |
6 files changed, 171 insertions, 3 deletions
diff --git a/examples/igloo2/example.v b/examples/igloo2/example.v index 0e336e557..1a1967d5a 100644 --- a/examples/igloo2/example.v +++ b/examples/igloo2/example.v @@ -1,5 +1,6 @@ module example ( input clk, + input EN, output LED1, output LED2, output LED3, @@ -14,7 +15,7 @@ module example ( reg [BITS-1:0] outcnt; always @(posedge clk) begin - counter <= counter + 1; + counter <= counter + EN; outcnt <= counter >> LOG2DELAY; end diff --git a/examples/igloo2/libero.tcl b/examples/igloo2/libero.tcl index b2090f402..952342a4c 100644 --- a/examples/igloo2/libero.tcl +++ b/examples/igloo2/libero.tcl @@ -5,7 +5,7 @@ file delete -force proj new_project \ -name example \ -location proj \ - -block_mode 1 \ + -block_mode 0 \ -hdl "VERILOG" \ -family IGLOO2 \ -die PA4MGL500 \ diff --git a/techlibs/sf2/Makefile.inc b/techlibs/sf2/Makefile.inc index cade49f37..cc3054ace 100644 --- a/techlibs/sf2/Makefile.inc +++ b/techlibs/sf2/Makefile.inc @@ -1,5 +1,6 @@ OBJS += techlibs/sf2/synth_sf2.o +OBJS += techlibs/sf2/sf2_iobs.o $(eval $(call add_share_file,share/sf2,techlibs/sf2/arith_map.v)) $(eval $(call add_share_file,share/sf2,techlibs/sf2/cells_map.v)) diff --git a/techlibs/sf2/cells_sim.v b/techlibs/sf2/cells_sim.v index b03b2c750..f967068af 100644 --- a/techlibs/sf2/cells_sim.v +++ b/techlibs/sf2/cells_sim.v @@ -73,3 +73,24 @@ module CFG4 ( parameter [15:0] INIT = 16'h0; assign Y = INIT >> {D, C, B, A}; endmodule + +module CLKBUF ( + input PAD, + output Y +); + assign Y = PAD; +endmodule + +module INBUF ( + input PAD, + output Y +); + assign Y = PAD; +endmodule + +module OUTBUF ( + input D, + output PAD +); + assign PAD = D; +endmodule diff --git a/techlibs/sf2/sf2_iobs.cc b/techlibs/sf2/sf2_iobs.cc new file mode 100644 index 000000000..27141430c --- /dev/null +++ b/techlibs/sf2/sf2_iobs.cc @@ -0,0 +1,130 @@ +/* + * yosys -- Yosys Open SYnthesis Suite + * + * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at> + * + * 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. + * + */ + +#include "kernel/yosys.h" +#include "kernel/sigtools.h" + +USING_YOSYS_NAMESPACE +PRIVATE_NAMESPACE_BEGIN + +struct Sf2IobsPass : public Pass { + Sf2IobsPass() : Pass("sf2_iobs", "SF2: insert IO buffers") { } + void help() YS_OVERRIDE + { + // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| + log("\n"); + log(" sf2_iobs [options] [selection]\n"); + log("\n"); + log("Add SF2 I/O buffers to top module IOs as needed.\n"); + log("\n"); + } + void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE + { + log_header(design, "Executing sf2_iobs pass (insert IO buffers).\n"); + + size_t argidx; + for (argidx = 1; argidx < args.size(); argidx++) + { + // if (args[argidx] == "-singleton") { + // singleton_mode = true; + // continue; + // } + break; + } + extra_args(args, argidx, design); + + Module *module = design->top_module(); + + if (module == nullptr) + log_cmd_error("No top module found.\n"); + + SigMap sigmap(module); + + pool<SigBit> clk_bits; + pool<SigBit> handled_io_bits; + dict<SigBit, SigBit> rewrite_bits; + vector<pair<Cell*, SigBit>> pad_bits; + + for (auto cell : module->cells()) + { + if (cell->type == "\\SLE") { + for (auto bit : sigmap(cell->getPort("\\CLK"))) + clk_bits.insert(bit); + } + if (cell->type.in("\\INBUF", "\\OUTBUF", "\\CLKBUF")) { + for (auto bit : sigmap(cell->getPort("\\PAD"))) + handled_io_bits.insert(bit); + } + } + + for (auto wire : vector<Wire*>(module->wires())) + { + if (!wire->port_input && !wire->port_output) + continue; + + for (int index = 0; index < GetSize(wire); index++) + { + SigBit bit(wire, index); + SigBit canonical_bit = sigmap(bit); + + if (handled_io_bits.count(canonical_bit)) + continue; + + if (wire->port_input && wire->port_output) + log_error("Failed to add buffer for inout port bit %s.\n", log_signal(bit)); + + IdString buf_type, buf_port; + + if (wire->port_output) { + buf_type = "\\OUTBUF"; + buf_port = "\\D"; + } else if (clk_bits.count(canonical_bit)) { + buf_type = "\\CLKBUF"; + buf_port = "\\Y"; + } else { + buf_type = "\\INBUF"; + buf_port = "\\Y"; + } + + Cell *c = module->addCell(NEW_ID, buf_type); + SigBit new_bit = module->addWire(NEW_ID); + c->setPort(buf_port, new_bit); + pad_bits.push_back(make_pair(c, bit)); + rewrite_bits[canonical_bit] = new_bit; + + log("Added %s cell %s for port bit %s.\n", log_id(c->type), log_id(c), log_signal(bit)); + } + } + + auto rewrite_function = [&](SigSpec &s) { + for (auto &bit : s) { + SigBit canonical_bit = sigmap(bit); + if (rewrite_bits.count(canonical_bit)) + bit = rewrite_bits.at(canonical_bit); + } + }; + + module->rewrite_sigspecs(rewrite_function); + + for (auto &it : pad_bits) + it.first->setPort("\\PAD", it.second); + } +} Sf2IobsPass; + +PRIVATE_NAMESPACE_END diff --git a/techlibs/sf2/synth_sf2.cc b/techlibs/sf2/synth_sf2.cc index 6828a4298..bdc20456d 100644 --- a/techlibs/sf2/synth_sf2.cc +++ b/techlibs/sf2/synth_sf2.cc @@ -60,6 +60,9 @@ struct SynthSf2Pass : public ScriptPass log(" -noflatten\n"); log(" do not flatten design before synthesis\n"); log("\n"); + log(" -noiobs\n"); + log(" run synthesis in \"block mode\", i.e. do not insert IO buffers\n"); + log("\n"); log(" -retime\n"); log(" run 'abc' with -dff option\n"); log("\n"); @@ -70,7 +73,7 @@ struct SynthSf2Pass : public ScriptPass } string top_opt, edif_file, vlog_file, json_file; - bool flatten, retime; + bool flatten, retime, iobs; void clear_flags() YS_OVERRIDE { @@ -80,6 +83,7 @@ struct SynthSf2Pass : public ScriptPass json_file = ""; flatten = true; retime = false; + iobs = true; } void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE @@ -122,6 +126,10 @@ struct SynthSf2Pass : public ScriptPass retime = true; continue; } + if (args[argidx] == "-noiobs") { + iobs = false; + continue; + } break; } extra_args(args, argidx, design); @@ -191,6 +199,13 @@ struct SynthSf2Pass : public ScriptPass run("clean"); } + if (check_label("map_iobs")) + { + if (iobs || help_mode) + run("sf2_iobs", "(unless -noiobs)"); + run("clean"); + } + if (check_label("check")) { run("hierarchy -check"); |