diff options
Diffstat (limited to 'techlibs/ecp5/synth_ecp5.cc')
| -rw-r--r-- | techlibs/ecp5/synth_ecp5.cc | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/techlibs/ecp5/synth_ecp5.cc b/techlibs/ecp5/synth_ecp5.cc index 3cee9722e..eb8ba8b9d 100644 --- a/techlibs/ecp5/synth_ecp5.cc +++ b/techlibs/ecp5/synth_ecp5.cc @@ -1,8 +1,8 @@ /* * yosys -- Yosys Open SYnthesis Suite * - * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at> - * Copyright (C) 2018 David Shah <dave@ds0.me> + * Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com> + * Copyright (C) 2018 gatecat <gatecat@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 @@ -88,7 +88,7 @@ struct SynthEcp5Pass : public ScriptPass log(" do not use PFU muxes to implement LUTs larger than LUT4s\n"); log("\n"); log(" -asyncprld\n"); - log(" use async PRLD mode to implement DLATCH and DFFSR (EXPERIMENTAL)\n"); + log(" use async PRLD mode to implement ALDFF (EXPERIMENTAL)\n"); log("\n"); log(" -abc2\n"); log(" run two passes of 'abc' for slightly improved logic density\n"); @@ -318,16 +318,17 @@ struct SynthEcp5Pass : public ScriptPass } else if (!nodffe) { dfflegalize_args += " -cell $_DFFE_??_ 01 -cell $_DFFE_?P??_ r -cell $_SDFFE_?P??_ r"; } - dfflegalize_args += " -cell $_DLATCH_?_ x"; if (help_mode) { - dfflegalize_args += " [-cell $_DFFSR_?PP_ x]"; + dfflegalize_args += " [-cell $_ALDFF_?P_ x -cell $_ALDFFE_?P?_ x] [-cell $_DLATCH_?_ x]"; } else if (asyncprld) { - dfflegalize_args += " -cell $_DFFSR_?PP_ x"; + dfflegalize_args += " -cell $_ALDFF_?P_ x -cell $_ALDFFE_?P?_ x"; + } else { + dfflegalize_args += " -cell $_DLATCH_?_ x"; } - run("dfflegalize" + dfflegalize_args, "($_DFFSR_*_ only if -asyncprld, $_*DFFE_* only if not -nodffe)"); + run("dfflegalize" + dfflegalize_args, "($_ALDFF_*_ only if -asyncprld, $_DLATCH_* only if not -asyncprld, $_*DFFE_* only if not -nodffe)"); if ((abc9 && dff) || help_mode) - run("zinit -all w:* t:$_DFF_?_ t:$_DFFE_??_ t:$_SDFF*", "(only if -abc9 and -dff"); - run(stringf("techmap -D NO_LUT %s -map +/ecp5/cells_map.v", help_mode ? "[-D ASYNC_PRLD]" : (asyncprld ? "-D ASYNC_PRLD" : ""))); + run("zinit -all w:* t:$_DFF_?_ t:$_DFFE_??_ t:$_SDFF*", "(only if -abc9 and -dff)"); + run("techmap -D NO_LUT -map +/ecp5/cells_map.v"); run("opt_expr -undriven -mux_undef"); run("simplemap"); run("ecp5_gsr"); @@ -385,6 +386,7 @@ struct SynthEcp5Pass : public ScriptPass run("hierarchy -check"); run("stat"); run("check -noinit"); + run("blackbox =A:whitebox"); } if (check_label("blif")) |