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ecp5: replace ecp5_ffinit with techmap rules + dff2dffs -match-init

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This commit is contained in:
Eddie Hung 2020-04-14 07:31:07 -07:00
parent 039c3a5982
commit 5d5029fa75
3 changed files with 213 additions and 57 deletions
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3
techlibs/ecp5/synth_ecp5.cc
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@ -303,14 +303,13 @@ struct SynthEcp5Pass : public ScriptPass
if (check_label("map_ffs"))
{
run("dff2dffs");
run("dff2dffs -match-init");
run("opt_clean");
if (!nodffe)
run("dff2dffe -direct-match $_DFF_* -direct-match $__DFFS_*");
run(stringf("techmap -D NO_LUT %s -map +/ecp5/cells_map.v", help_mode ? "[-D ASYNC_PRLD]" : (asyncprld ? "-D ASYNC_PRLD" : "")));
run("opt_expr -undriven -mux_undef");
run("simplemap");
run("ecp5_ffinit");
run("ecp5_gsr");
run("attrmvcp -copy -attr syn_useioff");
run("opt_clean");