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Changes in GoWin synth commands and ALU primitive support

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This commit is contained in:
Diego H 2018-12-03 20:08:35 -06:00
parent 47c89d600c
commit 819ca73096
5 changed files with 91 additions and 12 deletions
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21
techlibs/gowin/synth_gowin.cc
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@ -49,6 +49,9 @@ struct SynthGowinPass : public ScriptPass
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(" -nobram\n");
log(" do not use BRAM cells in output netlist\n");
log("\n");
log(" -retime\n");
log(" run 'abc' with -dff option\n");
log("\n");
@ -59,13 +62,14 @@ struct SynthGowinPass : public ScriptPass
}
string top_opt, vout_file;
bool retime;
bool retime, nobram;
void clear_flags() YS_OVERRIDE
{
top_opt = "-auto-top";
vout_file = "";
retime = false;
nobram = true;
}
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
@ -96,6 +100,10 @@ struct SynthGowinPass : public ScriptPass
retime = true;
continue;
}
if (args[argidx] == "-nobram") {
nobram = true;
continue;
}
break;
}
extra_args(args, argidx, design);
@ -119,7 +127,7 @@ struct SynthGowinPass : public ScriptPass
run(stringf("hierarchy -check %s", help_mode ? "-top <top>" : top_opt.c_str()));
}
if (check_label("flatten"))
if (check_label("flatten") && check_label("flatten", "(unless -noflatten)"))
{
run("proc");
run("flatten");
@ -131,13 +139,18 @@ struct SynthGowinPass : public ScriptPass
{
run("synth -run coarse");
}
if (!nobram && check_label("bram", "(skip if -nobram)"))
{
run("memory_bram -rules +/gowin/bram.txt");
run("techmap -map +/gowin/brams_map.v");
}
if (check_label("fine"))
{
run("opt -fast -mux_undef -undriven -fine");
run("memory_map");
run("opt -undriven -fine");
run("techmap");
run("techmap -map +/techmap.v -map +/gowin/arith_map.v");
run("opt -fine");
run("clean -purge");
run("splitnets -ports");
run("setundef -undriven -zero");