aboutsummaryrefslogtreecommitdiffstats
path: root/techlibs/intel_alm/synth_intel_alm.cc
diff options
context:
space:
mode:
Diffstat (limited to 'techlibs/intel_alm/synth_intel_alm.cc')
-rw-r--r--techlibs/intel_alm/synth_intel_alm.cc106
1 files changed, 80 insertions, 26 deletions
diff --git a/techlibs/intel_alm/synth_intel_alm.cc b/techlibs/intel_alm/synth_intel_alm.cc
index 0f844961e..6719eb65c 100644
--- a/techlibs/intel_alm/synth_intel_alm.cc
+++ b/techlibs/intel_alm/synth_intel_alm.cc
@@ -29,7 +29,7 @@ PRIVATE_NAMESPACE_BEGIN
struct SynthIntelALMPass : public ScriptPass {
SynthIntelALMPass() : ScriptPass("synth_intel_alm", "synthesis for ALM-based Intel (Altera) FPGAs.") {}
- void help() YS_OVERRIDE
+ void help() override
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
@@ -38,20 +38,26 @@ struct SynthIntelALMPass : public ScriptPass {
log("This command runs synthesis for ALM-based Intel FPGAs.\n");
log("\n");
log(" -top <module>\n");
- log(" use the specified module as top module (default='top')\n");
+ log(" use the specified module as top module\n");
log("\n");
log(" -family <family>\n");
log(" target one of:\n");
log(" \"cyclonev\" - Cyclone V (default)\n");
log(" \"cyclone10gx\" - Cyclone 10GX\n");
log("\n");
- log(" -quartus\n");
- log(" output a netlist using Quartus cells instead of MISTRAL_* cells\n");
- log("\n");
log(" -vqm <file>\n");
log(" write the design to the specified Verilog Quartus Mapping File. Writing of an\n");
log(" output file is omitted if this parameter is not specified. Implies -quartus.\n");
log("\n");
+ log(" -noflatten\n");
+ log(" do not flatten design before synthesis; useful for per-module area statistics\n");
+ log("\n");
+ log(" -quartus\n");
+ log(" output a netlist using Quartus cells instead of MISTRAL_* cells\n");
+ log("\n");
+ log(" -dff\n");
+ log(" pass DFFs to ABC to perform sequential logic optimisations (EXPERIMENTAL)\n");
+ log("\n");
log(" -run <from_label>:<to_label>\n");
log(" only run the commands between the labels (see below). an empty\n");
log(" from label is synonymous to 'begin', and empty to label is\n");
@@ -63,8 +69,8 @@ struct SynthIntelALMPass : public ScriptPass {
log(" -nobram\n");
log(" do not use block RAM cells in output netlist\n");
log("\n");
- log(" -noflatten\n");
- log(" do not flatten design before synthesis\n");
+ log(" -nodsp\n");
+ log(" do not map multipliers to MISTRAL_MUL cells\n");
log("\n");
log("The following commands are executed by this synthesis command:\n");
help_script();
@@ -72,9 +78,9 @@ struct SynthIntelALMPass : public ScriptPass {
}
string top_opt, family_opt, bram_type, vout_file;
- bool flatten, quartus, nolutram, nobram;
+ bool flatten, quartus, nolutram, nobram, dff, nodsp;
- void clear_flags() YS_OVERRIDE
+ void clear_flags() override
{
top_opt = "-auto-top";
family_opt = "cyclonev";
@@ -84,9 +90,11 @@ struct SynthIntelALMPass : public ScriptPass {
quartus = false;
nolutram = false;
nobram = false;
+ dff = false;
+ nodsp = false;
}
- void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
+ void execute(std::vector<std::string> args, RTLIL::Design *design) override
{
string run_from, run_to;
clear_flags();
@@ -126,10 +134,18 @@ struct SynthIntelALMPass : public ScriptPass {
nobram = true;
continue;
}
+ if (args[argidx] == "-nodsp") {
+ nodsp = true;
+ continue;
+ }
if (args[argidx] == "-noflatten") {
flatten = false;
continue;
}
+ if (args[argidx] == "-dff") {
+ dff = true;
+ continue;
+ }
break;
}
extra_args(args, argidx, design);
@@ -153,7 +169,7 @@ struct SynthIntelALMPass : public ScriptPass {
log_pop();
}
- void script() YS_OVERRIDE
+ void script() override
{
if (help_mode) {
family_opt = "<family>";
@@ -161,10 +177,13 @@ struct SynthIntelALMPass : public ScriptPass {
}
if (check_label("begin")) {
- run(stringf("read_verilog -sv -lib +/intel/%s/cells_sim.v", family_opt.c_str()));
+ if (family_opt == "cyclonev")
+ run(stringf("read_verilog -sv -lib +/intel_alm/%s/cells_sim.v", family_opt.c_str()));
run(stringf("read_verilog -specify -lib -D %s +/intel_alm/common/alm_sim.v", family_opt.c_str()));
run(stringf("read_verilog -specify -lib -D %s +/intel_alm/common/dff_sim.v", family_opt.c_str()));
+ run(stringf("read_verilog -specify -lib -D %s +/intel_alm/common/dsp_sim.v", family_opt.c_str()));
run(stringf("read_verilog -specify -lib -D %s +/intel_alm/common/mem_sim.v", family_opt.c_str()));
+ run(stringf("read_verilog -specify -lib -D %s -icells +/intel_alm/common/abc9_model.v", family_opt.c_str()));
// Misc and common cells
run("read_verilog -lib +/intel/common/altpll_bb.v");
@@ -172,21 +191,56 @@ struct SynthIntelALMPass : public ScriptPass {
run(stringf("hierarchy -check %s", help_mode ? "-top <top>" : top_opt.c_str()));
}
- if (flatten && check_label("flatten", "(unless -noflatten)")) {
+ if (check_label("coarse")) {
run("proc");
- run("flatten");
+ if (flatten || help_mode)
+ run("flatten", "(skip if -noflatten)");
run("tribuf -logic");
run("deminout");
- }
-
- if (check_label("coarse")) {
- run("synth -run coarse -lut 6");
- run("techmap -map +/intel_alm/common/arith_alm_map.v");
+ run("opt_expr");
+ run("opt_clean");
+ run("check");
+ run("opt -nodffe -nosdff");
+ run("fsm");
+ run("opt");
+ run("wreduce");
+ run("peepopt");
+ run("opt_clean");
+ run("share");
+ run("techmap -map +/cmp2lut.v -D LUT_WIDTH=6");
+ run("opt_expr");
+ run("opt_clean");
+ if (help_mode) {
+ run("techmap -map +/mul2dsp.v [...]", "(unless -nodsp)");
+ } else if (!nodsp) {
+ // Cyclone V supports 9x9 multiplication, Cyclone 10 GX does not.
+ run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=27 -D DSP_B_MAXWIDTH=27 -D DSP_A_MINWIDTH=19 -D DSP_B_MINWIDTH=4 -D DSP_NAME=__MUL27X27");
+ run("chtype -set $mul t:$__soft_mul");
+ run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=27 -D DSP_B_MAXWIDTH=27 -D DSP_A_MINWIDTH=4 -D DSP_B_MINWIDTH=19 -D DSP_NAME=__MUL27X27");
+ run("chtype -set $mul t:$__soft_mul");
+ if (family_opt == "cyclonev") {
+ run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 -D DSP_A_MINWIDTH=10 -D DSP_B_MINWIDTH=4 -D DSP_NAME=__MUL18X18");
+ run("chtype -set $mul t:$__soft_mul");
+ run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 -D DSP_A_MINWIDTH=4 -D DSP_B_MINWIDTH=10 -D DSP_NAME=__MUL18X18");
+ run("chtype -set $mul t:$__soft_mul");
+ run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=9 -D DSP_B_MAXWIDTH=9 -D DSP_A_MINWIDTH=4 -D DSP_B_MINWIDTH=4 -D DSP_NAME=__MUL9X9");
+ run("chtype -set $mul t:$__soft_mul");
+ } else if (family_opt == "cyclone10gx") {
+ run("techmap -map +/mul2dsp.v -D DSP_A_MAXWIDTH=18 -D DSP_B_MAXWIDTH=18 -D DSP_A_MINWIDTH=4 -D DSP_B_MINWIDTH=4 -D DSP_NAME=__MUL18X18");
+ run("chtype -set $mul t:$__soft_mul");
+ }
+ }
+ run("alumacc");
+ run("techmap -map +/intel_alm/common/arith_alm_map.v -map +/intel_alm/common/dsp_map.v");
+ run("opt");
+ run("memory -nomap");
+ run("opt_clean");
}
if (!nobram && check_label("map_bram", "(skip if -nobram)")) {
run(stringf("memory_bram -rules +/intel_alm/common/bram_%s.txt", bram_type.c_str()));
- run(stringf("techmap -map +/intel_alm/common/bram_%s_map.v", bram_type.c_str()));
+ if (help_mode || bram_type != "m10k")
+ run(stringf("techmap -map +/intel_alm/common/bram_%s_map.v", bram_type.c_str()));
}
if (!nolutram && check_label("map_lutram", "(skip if -nolutram)")) {
@@ -199,17 +253,17 @@ struct SynthIntelALMPass : public ScriptPass {
}
if (check_label("map_ffs")) {
- run("dff2dffe -direct-match $_DFF_*");
- // As mentioned in common/dff_sim.v, Intel flops power up to zero,
- // so use `zinit` to add inverters where needed.
- run("zinit");
- run("techmap -map +/techmap.v -map +/intel_alm/common/dff_map.v");
+ run("techmap");
+ run("dfflegalize -cell $_DFFE_PN0P_ 0 -cell $_SDFFCE_PP0P_ 0");
+ run("techmap -map +/intel_alm/common/dff_map.v");
run("opt -full -undriven -mux_undef");
run("clean -purge");
}
if (check_label("map_luts")) {
- run("abc9 -maxlut 6 -W 200");
+ run("techmap -map +/intel_alm/common/abc9_map.v");
+ run(stringf("abc9 %s -maxlut 6 -W 600", help_mode ? "[-dff]" : dff ? "-dff" : ""));
+ run("techmap -map +/intel_alm/common/abc9_unmap.v");
run("techmap -map +/intel_alm/common/alm_map.v");
run("opt -fast");
run("autoname");
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-07 09:27:04 +0000