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greenpak4: Can now techmap inferred D latches (without set/reset or output inverter)

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This commit is contained in:
Andrew Zonenberg 2016-12-10 18:46:36 +08:00
parent 797c03997e
commit c53a33143e
3 changed files with 17 additions and 0 deletions
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1
techlibs/greenpak4/Makefile.inc
View file

@ -3,6 +3,7 @@ OBJS += techlibs/greenpak4/synth_greenpak4.o
OBJS += techlibs/greenpak4/greenpak4_counters.o
OBJS += techlibs/greenpak4/greenpak4_dffinv.o
$(eval $(call add_share_file,share/greenpak4,techlibs/greenpak4/cells_latch.v))
$(eval $(call add_share_file,share/greenpak4,techlibs/greenpak4/cells_map.v))
$(eval $(call add_share_file,share/greenpak4,techlibs/greenpak4/cells_sim.v))
$(eval $(call add_share_file,share/greenpak4,techlibs/greenpak4/gp_dff.lib))

15
techlibs/greenpak4/cells_latch.v Normal file
View file

@ -0,0 +1,15 @@
module $_DLATCH_P_(input E, input D, output Q);
GP_DLATCH _TECHMAP_REPLACE_ (
.D(D),
.nCLK(!E),
.Q(Q)
);
endmodule
module $_DLATCH_N_(input E, input D, output Q);
GP_DLATCH _TECHMAP_REPLACE_ (
.D(D),
.nCLK(E),
.Q(Q)
);
endmodule

1
techlibs/greenpak4/synth_greenpak4.cc
View file

@ -161,6 +161,7 @@ struct SynthGreenPAK4Pass : public ScriptPass
run("memory_map");
run("opt -undriven -fine");
run("techmap");
run("techmap -map +/greenpak4/cells_latch.v");
run("dfflibmap -prepare -liberty +/greenpak4/gp_dff.lib");
run("opt -fast");
if (retime || help_mode)