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Harmonize BRAM/LUTRAM descriptions across all of Yosys.

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This commit:
  * renames all remaining instances of "DRAM" (which is ambiguous)
    to "LUTRAM" (which is not), finishing the work started in
    the commit 698ab9be;
  * renames memory rule files to brams.txt/lutrams.txt;
  * adds/renames script labels map_bram/map_lutram;
  * extracts where necessary script labels map_ffram and map_gates;
  * adds where necessary options -nobram/-nolutram.

The end result is that BRAM/LUTRAM/FFRAM aspects of every target
are now consistent with each other.

Per architecture:
  * anlogic: rename drams.txt→lutrams.txt, add -nolutram, add
    :map_lutram, :map_ffram, :map_gates
  * ecp5: rename bram.txt→brams.txt, lutram.txt→lutrams.txt
  * efinix: rename bram.txt→brams.txt, add -nobram, add :map_ffram,
    :map_gates
  * gowin: rename bram.txt→brams.txt, dram.txt→lutrams.txt,
    rename -nodram→-nolutram (-nodram still recognized), rename
    :bram→:map_bram, :dram→:map_lutram, add :map_ffram, :map_gates
This commit is contained in:
whitequark 2020-01-01 12:30:00 +00:00
parent 22fe931c86
commit 550310e264
18 changed files with 67 additions and 40 deletions
Download patch file Download diff file Expand all files Collapse all files

27
techlibs/gowin/synth_gowin.cc
View file

@ -55,7 +55,7 @@ struct SynthGowinPass : public ScriptPass
log(" -nobram\n");
log(" do not use BRAM cells in output netlist\n");
log("\n");
log(" -nodram\n");
log(" -nolutram\n");
log(" do not use distributed RAM cells in output netlist\n");
log("\n");
log(" -noflatten\n");
@ -80,7 +80,7 @@ struct SynthGowinPass : public ScriptPass
}
string top_opt, vout_file;
bool retime, nobram, nodram, flatten, nodffe, nowidelut, abc9, noiopads;
bool retime, nobram, nolutram, flatten, nodffe, nowidelut, abc9, noiopads;
void clear_flags() YS_OVERRIDE
{
@ -90,7 +90,7 @@ struct SynthGowinPass : public ScriptPass
flatten = true;
nobram = false;
nodffe = false;
nodram = false;
nolutram = false;
nowidelut = false;
abc9 = false;
noiopads = false;
@ -128,8 +128,8 @@ struct SynthGowinPass : public ScriptPass
nobram = true;
continue;
}
if (args[argidx] == "-nodram") {
nodram = true;
if (args[argidx] == "-nolutram" || /*deprecated*/args[argidx] == "-nodram") {
nolutram = true;
continue;
}
if (args[argidx] == "-nodffe") {
@ -188,24 +188,28 @@ struct SynthGowinPass : public ScriptPass
run("synth -run coarse");
}
if (!nobram && check_label("bram", "(skip if -nobram)"))
if (!nobram && check_label("map_bram", "(skip if -nobram)"))
{
run("memory_bram -rules +/gowin/bram.txt");
run("memory_bram -rules +/gowin/brams.txt");
run("techmap -map +/gowin/brams_map.v -map +/gowin/cells_sim.v");
}
if (!nodram && check_label("dram", "(skip if -nodram)"))
if (!nolutram && check_label("map_lutram", "(skip if -nolutram)"))
{
run("memory_bram -rules +/gowin/dram.txt");
run("techmap -map +/gowin/drams_map.v");
run("memory_bram -rules +/gowin/lutrams.txt");
run("techmap -map +/gowin/lutrams_map.v");
run("determine_init");
}
if (check_label("fine"))
if (check_label("map_ffram"))
{
run("opt -fast -mux_undef -undriven -fine");
run("memory_map");
run("opt -undriven -fine");
}
if (check_label("map_gates"))
{
run("techmap -map +/techmap.v -map +/gowin/arith_map.v");
run("techmap -map +/techmap.v");
if (retime || help_mode)
@ -248,7 +252,6 @@ struct SynthGowinPass : public ScriptPass
run("iopadmap -bits -inpad IBUF O:I -outpad OBUF I:O "
"-toutpad TBUF OEN:I:O -tinoutpad IOBUF OEN:O:I:IO", "(unless -noiopads)");
run("clean");
}
if (check_label("check"))