| /* |
| * yosys -- Yosys Open SYnthesis Suite |
| * |
| * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at> |
| * Copyright (C) 2018 David Shah <dave@ds0.me> |
| * |
| * 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/register.h" |
| #include "kernel/celltypes.h" |
| #include "kernel/rtlil.h" |
| #include "kernel/log.h" |
| |
| USING_YOSYS_NAMESPACE |
| PRIVATE_NAMESPACE_BEGIN |
| |
| struct SynthEcp5Pass : public ScriptPass |
| { |
| SynthEcp5Pass() : ScriptPass("synth_ecp5", "synthesis for ECP5 FPGAs") { } |
| |
| void help() YS_OVERRIDE |
| { |
| // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| |
| log("\n"); |
| log(" synth_ecp5 [options]\n"); |
| log("\n"); |
| log("This command runs synthesis for ECP5 FPGAs.\n"); |
| log("\n"); |
| log(" -top <module>\n"); |
| log(" use the specified module as top module\n"); |
| log("\n"); |
| log(" -blif <file>\n"); |
| log(" write the design to the specified BLIF file. writing of an output file\n"); |
| log(" is omitted if this parameter is not specified.\n"); |
| log("\n"); |
| log(" -edif <file>\n"); |
| log(" write the design to the specified EDIF file. writing of an output file\n"); |
| log(" is omitted if this parameter is not specified.\n"); |
| log("\n"); |
| log(" -json <file>\n"); |
| log(" write the design to the specified JSON file. writing of an output file\n"); |
| log(" is omitted if this parameter is not specified.\n"); |
| log("\n"); |
| log(" -run <from_label>:<to_label>\n"); |
| log(" only run the commands between the labels (see below). an empty\n"); |
| log(" from label is synonymous to 'begin', and empty to label is\n"); |
| log(" synonymous to the end of the command list.\n"); |
| log("\n"); |
| log(" -noflatten\n"); |
| log(" do not flatten design before synthesis\n"); |
| log("\n"); |
| log(" -retime\n"); |
| log(" run 'abc' with -dff option\n"); |
| log("\n"); |
| log(" -noccu2\n"); |
| log(" do not use CCU2 cells in output netlist\n"); |
| log("\n"); |
| log(" -nodffe\n"); |
| log(" do not use flipflops with CE in output netlist\n"); |
| log("\n"); |
| log(" -nobram\n"); |
| log(" do not use block RAM cells in output netlist\n"); |
| log("\n"); |
| log(" -nolutram\n"); |
| log(" do not use LUT RAM cells in output netlist\n"); |
| log("\n"); |
| log(" -nowidelut\n"); |
| log(" do not use PFU muxes to implement LUTs larger than LUT4s\n"); |
| log("\n"); |
| log(" -abc2\n"); |
| log(" run two passes of 'abc' for slightly improved logic density\n"); |
| log("\n"); |
| log(" -abc9\n"); |
| log(" use new ABC9 flow (EXPERIMENTAL)\n"); |
| log("\n"); |
| log(" -vpr\n"); |
| log(" generate an output netlist (and BLIF file) suitable for VPR\n"); |
| log(" (this feature is experimental and incomplete)\n"); |
| log("\n"); |
| log(" -nodsp\n"); |
| log(" do not map multipliers to MULT18X18D\n"); |
| log("\n"); |
| log("\n"); |
| log("The following commands are executed by this synthesis command:\n"); |
| help_script(); |
| log("\n"); |
| } |
| |
| string top_opt, blif_file, edif_file, json_file; |
| bool noccu2, nodffe, nobram, nolutram, nowidelut, flatten, retime, abc2, abc9, nodsp, vpr; |
| |
| void clear_flags() YS_OVERRIDE |
| { |
| top_opt = "-auto-top"; |
| blif_file = ""; |
| edif_file = ""; |
| json_file = ""; |
| noccu2 = false; |
| nodffe = false; |
| nobram = false; |
| nolutram = false; |
| nowidelut = false; |
| flatten = true; |
| retime = false; |
| abc2 = false; |
| vpr = false; |
| abc9 = false; |
| nodsp = false; |
| } |
| |
| void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE |
| { |
| string run_from, run_to; |
| clear_flags(); |
| |
| size_t argidx; |
| for (argidx = 1; argidx < args.size(); argidx++) |
| { |
| if (args[argidx] == "-top" && argidx+1 < args.size()) { |
| top_opt = "-top " + args[++argidx]; |
| continue; |
| } |
| if (args[argidx] == "-blif" && argidx+1 < args.size()) { |
| blif_file = args[++argidx]; |
| continue; |
| } |
| if (args[argidx] == "-edif" && argidx+1 < args.size()) { |
| edif_file = args[++argidx]; |
| continue; |
| } |
| if (args[argidx] == "-json" && argidx+1 < args.size()) { |
| json_file = args[++argidx]; |
| continue; |
| } |
| if (args[argidx] == "-run" && argidx+1 < args.size()) { |
| size_t pos = args[argidx+1].find(':'); |
| if (pos == std::string::npos) |
| break; |
| run_from = args[++argidx].substr(0, pos); |
| run_to = args[argidx].substr(pos+1); |
| continue; |
| } |
| if (args[argidx] == "-flatten") { |
| flatten = true; |
| continue; |
| } |
| if (args[argidx] == "-noflatten") { |
| flatten = false; |
| continue; |
| } |
| if (args[argidx] == "-retime") { |
| retime = true; |
| continue; |
| } |
| if (args[argidx] == "-noccu2") { |
| noccu2 = true; |
| continue; |
| } |
| if (args[argidx] == "-nodffe") { |
| nodffe = true; |
| continue; |
| } |
| if (args[argidx] == "-nobram") { |
| nobram = true; |
| continue; |
| } |
| if (args[argidx] == "-nolutram" || /*deprecated alias*/ args[argidx] == "-nodram") { |
| nolutram = true; |
| continue; |
| } |
| if (args[argidx] == "-nowidelut" || /*deprecated alias*/ args[argidx] == "-nomux") { |
| nowidelut = true; |
| continue; |
| } |
| if (args[argidx] == "-abc2") { |
| abc2 = true; |
| continue; |
| } |
| if (args[argidx] == "-vpr") { |
| vpr = true; |
| continue; |
| } |
| if (args[argidx] == "-abc9") { |
| abc9 = true; |
| continue; |
| } |
| if (args[argidx] == "-nodsp") { |
| nodsp = true; |
| continue; |
| } |
| break; |
| } |
| extra_args(args, argidx, design); |
| |
| if (!design->full_selection()) |
| log_cmd_error("This command only operates on fully selected designs!\n"); |
| |
| if (abc9 && retime) |
| log_cmd_error("-retime option not currently compatible with -abc9!\n"); |
| |
| log_header(design, "Executing SYNTH_ECP5 pass.\n"); |
| log_push(); |
| |
| run_script(design, run_from, run_to); |
| |
| log_pop(); |
| } |
| |
| void script() YS_OVERRIDE |
| { |
| if (check_label("begin")) |
| { |
| run("read_verilog -D_ABC -lib +/ecp5/cells_sim.v +/ecp5/cells_bb.v"); |
| run(stringf("hierarchy -check %s", help_mode ? "-top <top>" : top_opt.c_str())); |
| } |
| |
| if (check_label("coarse")) |
| { |
| run("proc"); |
| if (flatten || help_mode) |
| run("flatten"); |
| run("tribuf -logic"); |
| run("deminout"); |
| run("opt_expr"); |
| run("opt_clean"); |
| run("check"); |
| run("opt"); |
| run("wreduce"); |
| run("peepopt"); |
| run("opt_clean"); |
| run("share"); |
| run("techmap -map +/cmp2lut.v -D LUT_WIDTH=4"); |
| run("opt_expr"); |
| run("opt_clean"); |
| if (!nodsp) { |
| run("techmap -map +/mul2dsp.v -map +/ecp5/dsp_map.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 -D DSP_A_MINWIDTH=2 -D DSP_B_MINWIDTH=2 -D DSP_NAME=$__MUL18X18", "(unless -nodsp)"); |
| run("chtype -set $mul t:$__soft_mul", "(unless -nodsp)"); |
| } |
| run("alumacc"); |
| run("opt"); |
| run("fsm"); |
| run("opt -fast"); |
| run("memory -nomap"); |
| run("opt_clean"); |
| } |
| |
| if (!nobram && check_label("map_bram", "(skip if -nobram)")) |
| { |
| run("memory_bram -rules +/ecp5/bram.txt"); |
| run("techmap -map +/ecp5/brams_map.v"); |
| } |
| |
| if (!nolutram && check_label("map_lutram", "(skip if -nolutram)")) |
| { |
| run("memory_bram -rules +/ecp5/lutram.txt"); |
| run("techmap -map +/ecp5/lutrams_map.v"); |
| } |
| |
| if (check_label("map_ffram")) |
| { |
| run("opt -fast -mux_undef -undriven -fine"); |
| run("memory_map"); |
| run("opt -undriven -fine"); |
| } |
| |
| if (check_label("map_gates")) |
| { |
| if (noccu2) |
| run("techmap"); |
| else |
| run("techmap -map +/techmap.v -map +/ecp5/arith_map.v"); |
| if (retime || help_mode) |
| run("abc -dff", "(only if -retime)"); |
| } |
| |
| if (check_label("map_ffs")) |
| { |
| run("dffsr2dff"); |
| run("dff2dffs"); |
| run("opt_clean"); |
| if (!nodffe) |
| run("dff2dffe -direct-match $_DFF_* -direct-match $__DFFS_*"); |
| run("techmap -D NO_LUT -map +/ecp5/cells_map.v"); |
| run("opt_expr -undriven -mux_undef"); |
| run("simplemap"); |
| run("ecp5_ffinit"); |
| run("ecp5_gsr"); |
| run("attrmvcp -copy -attr syn_useioff"); |
| run("opt_clean"); |
| } |
| |
| if (check_label("map_luts")) |
| { |
| if (abc2 || help_mode) { |
| run("abc", " (only if -abc2)"); |
| } |
| std::string techmap_args = "-map +/ecp5/latches_map.v"; |
| if (abc9) |
| techmap_args += " -map +/ecp5/abc9_map.v -max_iter 1"; |
| run("techmap " + techmap_args); |
| |
| if (abc9) { |
| run("read_verilog -icells -lib +/ecp5/abc9_model.v"); |
| if (nowidelut) |
| run("abc9 -lut +/ecp5/abc9_5g_nowide.lut -box +/ecp5/abc9_5g.box -W 200 -nomfs"); |
| else |
| run("abc9 -lut +/ecp5/abc9_5g.lut -box +/ecp5/abc9_5g.box -W 200 -nomfs"); |
| run("techmap -map +/ecp5/abc9_unmap.v"); |
| } else { |
| if (nowidelut) |
| run("abc -lut 4 -dress"); |
| else |
| run("abc -lut 4:7 -dress"); |
| } |
| run("clean"); |
| } |
| |
| if (check_label("map_cells")) |
| { |
| if (vpr) |
| run("techmap -D NO_LUT -map +/ecp5/cells_map.v"); |
| else |
| run("techmap -map +/ecp5/cells_map.v", "(with -D NO_LUT in vpr mode)"); |
| |
| run("clean"); |
| } |
| |
| if (check_label("check")) |
| { |
| run("autoname"); |
| run("hierarchy -check"); |
| run("stat"); |
| run("check -noinit"); |
| } |
| |
| if (check_label("blif")) |
| { |
| if (!blif_file.empty() || help_mode) { |
| if (vpr || help_mode) { |
| run(stringf("opt_clean -purge"), |
| " (vpr mode)"); |
| run(stringf("write_blif -attr -cname -conn -param %s", |
| help_mode ? "<file-name>" : blif_file.c_str()), |
| " (vpr mode)"); |
| } |
| if (!vpr) |
| run(stringf("write_blif -gates -attr -param %s", |
| help_mode ? "<file-name>" : blif_file.c_str()), |
| " (non-vpr mode)"); |
| } |
| } |
| |
| if (check_label("edif")) |
| { |
| if (!edif_file.empty() || help_mode) |
| run(stringf("write_edif %s", help_mode ? "<file-name>" : edif_file.c_str())); |
| } |
| |
| if (check_label("json")) |
| { |
| if (!json_file.empty() || help_mode) |
| run(stringf("write_json %s", help_mode ? "<file-name>" : json_file.c_str())); |
| } |
| } |
| } SynthEcp5Pass; |
| |
| PRIVATE_NAMESPACE_END |