From df92e9bdc23432847866e5b1101495e3424121e0 Mon Sep 17 00:00:00 2001 From: Miodrag Milanovic Date: Tue, 2 Apr 2019 19:21:01 +0200 Subject: Make nobram false by default for gowin --- techlibs/gowin/synth_gowin.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'techlibs/gowin/synth_gowin.cc') diff --git a/techlibs/gowin/synth_gowin.cc b/techlibs/gowin/synth_gowin.cc index 9a3fcdbb6..c7983bade 100644 --- a/techlibs/gowin/synth_gowin.cc +++ b/techlibs/gowin/synth_gowin.cc @@ -73,7 +73,7 @@ struct SynthGowinPass : public ScriptPass vout_file = ""; retime = false; flatten = true; - nobram = true; + nobram = false; } void execute(std::vector args, RTLIL::Design *design) YS_OVERRIDE -- cgit v1.2.3 From f9272fc56d7179f04a9f776bf056eedfc33dd358 Mon Sep 17 00:00:00 2001 From: Diego Date: Fri, 12 Apr 2019 23:40:02 -0500 Subject: GoWin enablement: DRAM, initial BRAM, DRAM init, DRAM sim and synth_gowin flow --- techlibs/gowin/synth_gowin.cc | 56 +++++++++++++++++++++++++++++++++++-------- 1 file changed, 46 insertions(+), 10 deletions(-) (limited to 'techlibs/gowin/synth_gowin.cc') diff --git a/techlibs/gowin/synth_gowin.cc b/techlibs/gowin/synth_gowin.cc index 9a3fcdbb6..8d5fed231 100644 --- a/techlibs/gowin/synth_gowin.cc +++ b/techlibs/gowin/synth_gowin.cc @@ -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 { @@ -73,7 +79,9 @@ struct SynthGowinPass : public ScriptPass vout_file = ""; retime = false; flatten = true; - nobram = true; + nobram = false; + nodffe = false; + nodram = false; } void execute(std::vector 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")) -- cgit v1.2.3