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synth_ice40/ecp5/xilinx: allow abc9.W to be overridden via scratchpad

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This commit is contained in:
Eddie Hung 2020-05-04 11:44:00 -07:00
parent 584780d776
commit e6b55e8b38
3 changed files with 34 additions and 11 deletions
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24
techlibs/ice40/synth_ice40.cc
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@ -29,6 +29,13 @@ struct SynthIce40Pass : public ScriptPass
{
SynthIce40Pass() : ScriptPass("synth_ice40", "synthesis for iCE40 FPGAs") { }
void on_register() YS_OVERRIDE
{
RTLIL::constpad["synth_ice40.abc9.hx.W"] = "250";
RTLIL::constpad["synth_ice40.abc9.lp.W"] = "400";
RTLIL::constpad["synth_ice40.abc9.u.W"] = "750";
}
void help() YS_OVERRIDE
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
@ -373,14 +380,15 @@ struct SynthIce40Pass : public ScriptPass
if (!noabc) {
if (abc9) {
run("read_verilog " + define + " -icells -lib -specify +/abc9_model.v +/ice40/abc9_model.v");
int wire_delay;
if (device_opt == "lp")
wire_delay = 400;
else if (device_opt == "u")
wire_delay = 750;
else
wire_delay = 250;
run(stringf("abc9 -W %d", wire_delay));
std::string abc9_opts;
std::string k = "synth_ice40.abc9.W";
if (active_design && active_design->scratchpad.count(k))
abc9_opts += stringf(" -W %s", active_design->scratchpad_get_string(k).c_str());
else {
k = stringf("synth_ice40.abc9.%s.W", device_opt.c_str());
abc9_opts += stringf(" -W %s", RTLIL::constpad.at(k).c_str());
}
run("abc9 " + abc9_opts);
}
else
run("abc -dress -lut 4", "(skip if -noabc)");