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Merge branch 'master' of https://github.com/dh73/yosys_gowin into dh73-master

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This commit is contained in:
Clifford Wolf 2019-04-22 09:09:27 +02:00
commit 913659d644
10 changed files with 458 additions and 10 deletions
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54
techlibs/gowin/synth_gowin.cc
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@ -49,9 +49,15 @@ 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(" -nodffe\n");
log(" do not use flipflops with CE in output netlist\n");
log("\n");
log(" -nobram\n");
log(" do not use BRAM cells in output netlist\n");
log("\n");
log(" -nodram\n");
log(" do not use distributed RAM cells in output netlist\n");
log("\n");
log(" -noflatten\n");
log(" do not flatten design before synthesis\n");
log("\n");
@ -65,7 +71,7 @@ struct SynthGowinPass : public ScriptPass
}
string top_opt, vout_file;
bool retime, flatten, nobram;
bool retime, nobram, nodram, flatten, nodffe;
void clear_flags() YS_OVERRIDE
{
@ -74,6 +80,8 @@ struct SynthGowinPass : public ScriptPass
retime = false;
flatten = true;
nobram = false;
nodffe = false;
nodram = false;
}
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
@ -108,6 +116,14 @@ struct SynthGowinPass : public ScriptPass
nobram = true;
continue;
}
if (args[argidx] == "-nodram") {
nodram = true;
continue;
}
if (args[argidx] == "-nodffe") {
nodffe = true;
continue;
}
if (args[argidx] == "-noflatten") {
flatten = false;
continue;
@ -147,25 +163,43 @@ struct SynthGowinPass : public ScriptPass
{
run("synth -run coarse");
}
if (!nobram && check_label("bram", "(skip if -nobram)"))
if (!nobram && check_label("bram", "(skip if -nobram)"))
{
run("memory_bram -rules +/gowin/bram.txt");
run("techmap -map +/gowin/brams_map.v");
run("techmap -map +/gowin/brams_map.v -map +/gowin/cells_sim.v");
}
if (!nodram && check_label("dram", "(skip if -nodram)"))
{
run("memory_bram -rules +/gowin/dram.txt");
run("techmap -map +/gowin/drams_map.v");
run("determine_init");
}
if (check_label("fine"))
{
run("opt -fast -mux_undef -undriven -fine");
run("memory_map");
run("opt -undriven -fine");
run("techmap -map +/techmap.v -map +/gowin/arith_map.v");
run("opt -fine");
run("clean -purge");
run("splitnets -ports");
run("setundef -undriven -zero");
run("techmap -map +/techmap.v");
if (retime || help_mode)
run("abc -dff", "(only if -retime)");
}
if (check_label("map_ffs"))
{
run("dffsr2dff");
run("dff2dffs");
run("opt_clean");
if (!nodffe)
run("dff2dffe -direct-match $_DFF_* -direct-match $__DFFS_*");
run("techmap -map +/gowin/cells_map.v");
run("opt_expr -mux_undef");
run("simplemap");
}
if (check_label("map_luts"))
{
run("abc -lut 4");
@ -176,8 +210,10 @@ struct SynthGowinPass : public ScriptPass
{
run("techmap -map +/gowin/cells_map.v");
run("hilomap -hicell VCC V -locell GND G");
run("iopadmap -inpad IBUF O:I -outpad OBUF I:O");
run("clean -purge");
run("iopadmap -bits -inpad IBUF O:I -outpad OBUF I:O", "(unless -noiopads)");
run("dffinit -ff DFF Q INIT");
run("clean");
}
if (check_label("check"))