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-rw-r--r--README.md13
-rw-r--r--backends/aiger/xaiger.cc63
-rw-r--r--frontends/aiger/aigerparse.cc39
-rw-r--r--passes/techmap/abc9.cc47
-rw-r--r--techlibs/ecp5/Makefile.inc3
-rw-r--r--techlibs/ecp5/abc_5g.box18
-rw-r--r--techlibs/ecp5/abc_map.v24
-rw-r--r--techlibs/ecp5/abc_model.v5
-rw-r--r--techlibs/ecp5/abc_unmap.v5
-rw-r--r--techlibs/ecp5/cells_sim.v5
-rw-r--r--techlibs/ecp5/synth_ecp5.cc7
-rw-r--r--techlibs/xilinx/Makefile.inc3
-rw-r--r--techlibs/xilinx/abc_map.v125
-rw-r--r--techlibs/xilinx/abc_model.v34
-rw-r--r--techlibs/xilinx/abc_unmap.v28
-rw-r--r--techlibs/xilinx/abc_xc7.box31
-rw-r--r--techlibs/xilinx/cells_map.v2
-rw-r--r--techlibs/xilinx/cells_sim.v96
-rw-r--r--techlibs/xilinx/synth_xilinx.cc15
-rw-r--r--techlibs/xilinx/xc7_brams_bb.v10
20 files changed, 436 insertions, 137 deletions
diff --git a/README.md b/README.md
index 38ca77862..c6c6f24b6 100644
--- a/README.md
+++ b/README.md
@@ -427,19 +427,16 @@ Verilog Attributes and non-standard features
blackbox or whitebox definition to a corresponding entry in a `abc9`
box-file.
-- The port attribute ``abc_scc_break`` indicates a module input port that will
- be treated as a primary output during `abc9` techmapping. Doing so eliminates
- the possibility of a strongly-connected component (i.e. a combinatorial loop)
- existing. Typically, this is specified for sequential inputs on otherwise
- combinatorial boxes -- for example, applying ``abc_scc_break`` onto the `D`
- port of a LUTRAM cell prevents `abc9` from interpreting any `Q` -> `D` paths
- as a combinatorial loop.
-
- The port attribute ``abc_carry`` marks the carry-in (if an input port) and
carry-out (if output port) ports of a box. This information is necessary for
`abc9` to preserve the integrity of carry-chains. Specifying this attribute
onto a bus port will affect only its most significant bit.
+- The port attribute ``abc_arrival`` specifies an integer (for output ports
+ only) to be used as the arrival time of this sequential port. It can be used,
+ for example, to specify the clk-to-Q delay of a flip-flop for consideration
+ during techmapping.
+
Non-standard or SystemVerilog features for formal verification
==============================================================
diff --git a/backends/aiger/xaiger.cc b/backends/aiger/xaiger.cc
index 77d0e94c2..b66706ffa 100644
--- a/backends/aiger/xaiger.cc
+++ b/backends/aiger/xaiger.cc
@@ -83,6 +83,7 @@ struct XAigerWriter
dict<SigBit, pair<SigBit, SigBit>> and_map;
vector<std::tuple<SigBit,RTLIL::Cell*,RTLIL::IdString,int>> ci_bits;
vector<std::tuple<SigBit,RTLIL::Cell*,RTLIL::IdString,int,int>> co_bits;
+ dict<SigBit, float> arrival_times;
vector<pair<int, int>> aig_gates;
vector<int> aig_outputs;
@@ -247,30 +248,32 @@ struct XAigerWriter
if (!holes_mode) {
toposort.node(cell->name);
for (const auto &conn : cell->connections()) {
- if (cell->input(conn.first)) {
+ auto port_wire = inst_module->wire(conn.first);
+ if (port_wire->port_input) {
// Ignore inout for the sake of topographical ordering
- if (cell->output(conn.first)) continue;
+ if (port_wire->port_output) continue;
for (auto bit : sigmap(conn.second))
bit_users[bit].insert(cell->name);
}
- if (cell->output(conn.first))
+ if (port_wire->port_output)
for (auto bit : sigmap(conn.second))
bit_drivers[bit].insert(cell->name);
}
}
}
else {
- bool cell_known = cell->known();
+ bool cell_known = inst_module;
for (const auto &c : cell->connections()) {
if (c.second.is_fully_const()) continue;
- auto is_input = !cell_known || cell->input(c.first);
- auto is_output = !cell_known || cell->output(c.first);
+ auto port_wire = inst_module ? inst_module->wire(c.first) : nullptr;
+ auto is_input = !cell_known || port_wire->port_input;
+ auto is_output = !cell_known || port_wire->port_output;
if (!is_input && !is_output)
log_error("Connection '%s' on cell '%s' (type '%s') not recognised!\n", log_id(c.first), log_id(cell), log_id(cell->type));
if (is_input) {
- for (auto b : c.second.bits()) {
+ for (auto b : c.second) {
Wire *w = b.wire;
if (!w) continue;
if (!w->port_output || !cell_known) {
@@ -286,7 +289,17 @@ struct XAigerWriter
}
}
if (is_output) {
- for (auto b : c.second.bits()) {
+ int arrival = 0;
+ if (port_wire) {
+ auto it = port_wire->attributes.find("\\abc_arrival");
+ if (it != port_wire->attributes.end()) {
+ if (it->second.flags != 0)
+ log_error("Attribute 'abc_arrival' on port '%s' of module '%s' is not an integer.\n", log_id(port_wire), log_id(cell->type));
+ arrival = it->second.as_int();
+ }
+ }
+
+ for (auto b : c.second) {
Wire *w = b.wire;
if (!w) continue;
input_bits.insert(b);
@@ -294,6 +307,9 @@ struct XAigerWriter
if (O != b)
alias_map[O] = b;
undriven_bits.erase(O);
+
+ if (arrival)
+ arrival_times[b] = arrival;
}
}
}
@@ -559,19 +575,30 @@ struct XAigerWriter
f << "c";
+ auto write_buffer_float = [](std::stringstream &buffer, float f32) {
+ buffer.write(reinterpret_cast<const char*>(&f32), sizeof(f32));
+ };
+ std::stringstream i_buffer;
+ auto write_i_buffer = std::bind(write_buffer_float, std::ref(i_buffer), std::placeholders::_1);
+ for (auto bit : input_bits)
+ write_i_buffer(arrival_times.at(bit, 0));
+ //std::stringstream o_buffer;
+ //auto write_o_buffer = std::bind(write_buffer_float, std::ref(o_buffer), std::placeholders::_1);
+ //for (auto bit : output_bits)
+ // write_o_buffer(0);
+
if (!box_list.empty()) {
auto write_buffer = [](std::stringstream &buffer, int i32) {
int32_t i32_be = to_big_endian(i32);
buffer.write(reinterpret_cast<const char*>(&i32_be), sizeof(i32_be));
};
-
std::stringstream h_buffer;
auto write_h_buffer = std::bind(write_buffer, std::ref(h_buffer), std::placeholders::_1);
write_h_buffer(1);
log_debug("ciNum = %d\n", GetSize(input_bits) + GetSize(ci_bits));
write_h_buffer(input_bits.size() + ci_bits.size());
log_debug("coNum = %d\n", GetSize(output_bits) + GetSize(co_bits));
- write_h_buffer(output_bits.size() + co_bits.size());
+ write_h_buffer(output_bits.size() + GetSize(co_bits));
log_debug("piNum = %d\n", GetSize(input_bits));
write_h_buffer(input_bits.size());
log_debug("poNum = %d\n", GetSize(output_bits));
@@ -651,7 +678,6 @@ struct XAigerWriter
std::stringstream r_buffer;
auto write_r_buffer = std::bind(write_buffer, std::ref(r_buffer), std::placeholders::_1);
write_r_buffer(0);
-
f << "r";
buffer_str = r_buffer.str();
buffer_size_be = to_big_endian(buffer_str.size());
@@ -707,6 +733,21 @@ struct XAigerWriter
log_pop();
}
}
+ else {
+ log_debug("piNum = %d\n", GetSize(input_bits));
+ log_debug("poNum = %d\n", GetSize(output_bits));
+ }
+
+ f << "i";
+ std::string buffer_str = i_buffer.str();
+ int32_t buffer_size_be = to_big_endian(buffer_str.size());
+ f.write(reinterpret_cast<const char*>(&buffer_size_be), sizeof(buffer_size_be));
+ f.write(buffer_str.data(), buffer_str.size());
+ //f << "o";
+ //buffer_str = o_buffer.str();
+ //buffer_size_be = to_big_endian(buffer_str.size());
+ //f.write(reinterpret_cast<const char*>(&buffer_size_be), sizeof(buffer_size_be));
+ //f.write(buffer_str.data(), buffer_str.size());
f << stringf("Generated by %s\n", yosys_version_str);
}
diff --git a/frontends/aiger/aigerparse.cc b/frontends/aiger/aigerparse.cc
index 06522939f..e8ee487e5 100644
--- a/frontends/aiger/aigerparse.cc
+++ b/frontends/aiger/aigerparse.cc
@@ -430,6 +430,7 @@ void AigerReader::parse_xaiger(const dict<int,IdString> &box_lookup)
else if (c == 'r') {
uint32_t dataSize YS_ATTRIBUTE(unused) = parse_xaiger_literal(f);
flopNum = parse_xaiger_literal(f);
+ log_debug("flopNum: %u\n", flopNum);
log_assert(dataSize == (flopNum+1) * sizeof(uint32_t));
f.ignore(flopNum * sizeof(uint32_t));
}
@@ -496,8 +497,7 @@ void AigerReader::parse_aiger_ascii()
// Parse latches
RTLIL::Wire *clk_wire = nullptr;
- if (L > 0) {
- log_assert(clk_name != "");
+ if (L > 0 && !clk_name.empty()) {
clk_wire = module->wire(clk_name);
log_assert(!clk_wire);
log_debug2("Creating %s\n", clk_name.c_str());
@@ -513,7 +513,10 @@ void AigerReader::parse_aiger_ascii()
RTLIL::Wire *q_wire = createWireIfNotExists(module, l1);
RTLIL::Wire *d_wire = createWireIfNotExists(module, l2);
- module->addDffGate(NEW_ID, clk_wire, d_wire, q_wire);
+ if (clk_wire)
+ module->addDffGate(NEW_ID, clk_wire, d_wire, q_wire);
+ else
+ module->addFfGate(NEW_ID, d_wire, q_wire);
// Reset logic is optional in AIGER 1.9
if (f.peek() == ' ') {
@@ -621,8 +624,7 @@ void AigerReader::parse_aiger_binary()
// Parse latches
RTLIL::Wire *clk_wire = nullptr;
- if (L > 0) {
- log_assert(clk_name != "");
+ if (L > 0 && !clk_name.empty()) {
clk_wire = module->wire(clk_name);
log_assert(!clk_wire);
log_debug2("Creating %s\n", clk_name.c_str());
@@ -638,7 +640,10 @@ void AigerReader::parse_aiger_binary()
RTLIL::Wire *q_wire = createWireIfNotExists(module, l1);
RTLIL::Wire *d_wire = createWireIfNotExists(module, l2);
- module->addDff(NEW_ID, clk_wire, d_wire, q_wire);
+ if (clk_wire)
+ module->addDff(NEW_ID, clk_wire, d_wire, q_wire);
+ else
+ module->addFf(NEW_ID, d_wire, q_wire);
// Reset logic is optional in AIGER 1.9
if (f.peek() == ' ') {
@@ -776,19 +781,19 @@ void AigerReader::post_process()
// NB: Assume box_module->ports are sorted alphabetically
// (as RTLIL::Module::fixup_ports() would do)
for (auto port_name : box_module->ports) {
- RTLIL::Wire* w = box_module->wire(port_name);
- log_assert(w);
+ RTLIL::Wire* port = box_module->wire(port_name);
+ log_assert(port);
RTLIL::SigSpec rhs;
- RTLIL::Wire* wire = nullptr;
- for (int i = 0; i < GetSize(w); i++) {
- if (w->port_input) {
+ for (int i = 0; i < GetSize(port); i++) {
+ RTLIL::Wire* wire = nullptr;
+ if (port->port_input) {
log_assert(co_count < outputs.size());
wire = outputs[co_count++];
log_assert(wire);
log_assert(wire->port_output);
wire->port_output = false;
}
- if (w->port_output) {
+ if (port->port_output) {
log_assert((piNum + ci_count) < inputs.size());
wire = inputs[piNum + ci_count++];
log_assert(wire);
@@ -797,6 +802,7 @@ void AigerReader::post_process()
}
rhs.append(wire);
}
+
cell->setPort(port_name, rhs);
}
}
@@ -814,6 +820,7 @@ void AigerReader::post_process()
RTLIL::Wire* wire = inputs[variable];
log_assert(wire);
log_assert(wire->port_input);
+ log_debug("Renaming input %s", log_id(wire));
if (index == 0) {
// Cope with the fact that a CI might be identical
@@ -840,6 +847,7 @@ void AigerReader::post_process()
wire->port_input = false;
}
}
+ log_debug(" -> %s\n", log_id(wire));
}
else if (type == "output") {
log_assert(static_cast<unsigned>(variable + co_count) < outputs.size());
@@ -850,6 +858,7 @@ void AigerReader::post_process()
wire->port_output = false;
continue;
}
+ log_debug("Renaming output %s", log_id(wire));
if (index == 0) {
// Cope with the fact that a CO might be identical
@@ -871,6 +880,7 @@ void AigerReader::post_process()
else {
wire->port_output = false;
module->connect(wire, existing);
+ wire = existing;
}
}
else if (index > 0) {
@@ -896,6 +906,7 @@ void AigerReader::post_process()
wire->port_output = false;
}
}
+ log_debug(" -> %s\n", log_id(wire));
}
else if (type == "box") {
RTLIL::Cell* cell = module->cell(stringf("$__box%d__", variable));
@@ -1004,8 +1015,8 @@ struct AigerFrontend : public Frontend {
log(" Name of module to be created (default: <filename>)\n");
log("\n");
log(" -clk_name <wire_name>\n");
- log(" AIGER latches to be transformed into posedge DFFs clocked by wire of");
- log(" this name (default: clk)\n");
+ log(" If specified, AIGER latches to be transformed into $_DFF_P_ cells\n");
+ log(" clocked by wire of this name. Otherwise, $_FF_ cells will be used.\n");
log("\n");
log(" -map <filename>\n");
log(" read file with port and latch symbols\n");
diff --git a/passes/techmap/abc9.cc b/passes/techmap/abc9.cc
index 84cb2c04f..968c68b70 100644
--- a/passes/techmap/abc9.cc
+++ b/passes/techmap/abc9.cc
@@ -76,8 +76,7 @@ inline std::string remap_name(RTLIL::IdString abc_name)
return stringf("$abc$%d$%s", map_autoidx, abc_name.c_str()+1);
}
-void handle_loops(RTLIL::Design *design,
- const dict<IdString,pool<IdString>> &scc_break_inputs)
+void handle_loops(RTLIL::Design *design)
{
Pass::call(design, "scc -set_attr abc_scc_id {}");
@@ -114,30 +113,6 @@ void handle_loops(RTLIL::Design *design,
}
cell->attributes.erase(it);
}
-
- auto jt = scc_break_inputs.find(cell->type);
- if (jt != scc_break_inputs.end())
- for (auto port_name : jt->second) {
- RTLIL::SigSpec sig;
- auto &rhs = cell->connections_.at(port_name);
- for (auto b : rhs) {
- Wire *w = b.wire;
- if (!w) continue;
- w->port_output = true;
- w->set_bool_attribute(ID(abc_scc_break));
- w = module->wire(stringf("%s.abci", w->name.c_str()));
- if (!w) {
- w = module->addWire(stringf("%s.abci", b.wire->name.c_str()), GetSize(b.wire));
- w->port_input = true;
- }
- else {
- log_assert(b.offset < GetSize(w));
- log_assert(w->port_input);
- }
- sig.append(RTLIL::SigBit(w, b.offset));
- }
- rhs = sig;
- }
}
module->fixup_ports();
@@ -272,8 +247,7 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
bool cleanup, vector<int> lut_costs, bool dff_mode, std::string clk_str,
bool /*keepff*/, std::string delay_target, std::string /*lutin_shared*/, bool fast_mode,
bool show_tempdir, std::string box_file, std::string lut_file,
- std::string wire_delay, const dict<int,IdString> &box_lookup,
- const dict<IdString,pool<IdString>> &scc_break_inputs
+ std::string wire_delay, const dict<int,IdString> &box_lookup
)
{
module = current_module;
@@ -413,7 +387,7 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
RTLIL::Selection& sel = design->selection_stack.back();
sel.select(module);
- handle_loops(design, scc_break_inputs);
+ handle_loops(design);
Pass::call(design, "aigmap");
@@ -1067,7 +1041,6 @@ struct Abc9Pass : public Pass {
extra_args(args, argidx, design);
dict<int,IdString> box_lookup;
- dict<IdString,pool<IdString>> scc_break_inputs;
for (auto m : design->modules()) {
auto it = m->attributes.find(ID(abc_box_id));
if (it == m->attributes.end())
@@ -1085,17 +1058,13 @@ struct Abc9Pass : public Pass {
for (auto p : m->ports) {
auto w = m->wire(p);
log_assert(w);
- if (w->port_input) {
- if (w->attributes.count(ID(abc_scc_break)))
- scc_break_inputs[m->name].insert(p);
- if (w->attributes.count(ID(abc_carry))) {
+ if (w->attributes.count(ID(abc_carry))) {
+ if (w->port_input) {
if (carry_in)
log_error("Module '%s' contains more than one 'abc_carry' input port.\n", log_id(m));
carry_in = w;
}
- }
- if (w->port_output) {
- if (w->attributes.count(ID(abc_carry))) {
+ else if (w->port_output) {
if (carry_out)
log_error("Module '%s' contains more than one 'abc_carry' input port.\n", log_id(m));
carry_out = w;
@@ -1147,7 +1116,7 @@ struct Abc9Pass : public Pass {
if (!dff_mode || !clk_str.empty()) {
abc9_module(design, mod, script_file, exe_file, cleanup, lut_costs, dff_mode, clk_str, keepff,
delay_target, lutin_shared, fast_mode, show_tempdir,
- box_file, lut_file, wire_delay, box_lookup, scc_break_inputs);
+ box_file, lut_file, wire_delay, box_lookup);
continue;
}
@@ -1293,7 +1262,7 @@ struct Abc9Pass : public Pass {
en_sig = assign_map(std::get<3>(it.first));
abc9_module(design, mod, script_file, exe_file, cleanup, lut_costs, !clk_sig.empty(), "$",
keepff, delay_target, lutin_shared, fast_mode, show_tempdir,
- box_file, lut_file, wire_delay, box_lookup, scc_break_inputs);
+ box_file, lut_file, wire_delay, box_lookup);
assign_map.set(mod);
}
}
diff --git a/techlibs/ecp5/Makefile.inc b/techlibs/ecp5/Makefile.inc
index c41d16076..c02ee677f 100644
--- a/techlibs/ecp5/Makefile.inc
+++ b/techlibs/ecp5/Makefile.inc
@@ -12,6 +12,9 @@ $(eval $(call add_share_file,share/ecp5,techlibs/ecp5/bram.txt))
$(eval $(call add_share_file,share/ecp5,techlibs/ecp5/arith_map.v))
$(eval $(call add_share_file,share/ecp5,techlibs/ecp5/latches_map.v))
+$(eval $(call add_share_file,share/ecp5,techlibs/ecp5/abc_map.v))
+$(eval $(call add_share_file,share/ecp5,techlibs/ecp5/abc_unmap.v))
+$(eval $(call add_share_file,share/ecp5,techlibs/ecp5/abc_model.v))
$(eval $(call add_share_file,share/ecp5,techlibs/ecp5/abc_5g.box))
$(eval $(call add_share_file,share/ecp5,techlibs/ecp5/abc_5g.lut))
$(eval $(call add_share_file,share/ecp5,techlibs/ecp5/abc_5g_nowide.lut))
diff --git a/techlibs/ecp5/abc_5g.box b/techlibs/ecp5/abc_5g.box
index c757d137d..66ebe196a 100644
--- a/techlibs/ecp5/abc_5g.box
+++ b/techlibs/ecp5/abc_5g.box
@@ -15,16 +15,16 @@ CCU2C 1 1 9 3
630 379 630 379 526 275 392 141 273
516 516 516 516 412 412 278 278 43
-# Box 2 : TRELLIS_DPR16X4 (16x4 dist ram)
+# Box 2 : TRELLIS_DPR16X4_COMB (16x4 dist ram)
# Outputs: DO0, DO1, DO2, DO3
-# name ID w/b ins outs
-TRELLIS_DPR16X4 2 0 14 4
-
-#DI0 DI1 DI2 DI3 RAD0 RAD1 RAD2 RAD3 WAD0 WAD1 WAD2 WAD3 WCK WRE
-- - - - 141 379 275 379 - - - - - -
-- - - - 141 379 275 379 - - - - - -
-- - - - 141 379 275 379 - - - - - -
-- - - - 141 379 275 379 - - - - - -
+# name ID w/b ins outs
+$__ABC_RAM16X2_COMB 2 0 8 4
+
+#A0 A1 A2 A3 RAD0 RAD1 RAD2 RAD3
+0 0 0 0 141 379 275 379
+0 0 0 0 141 379 275 379
+0 0 0 0 141 379 275 379
+0 0 0 0 141 379 275 379
# Box 3 : PFUMX (MUX2)
# Outputs: Z
diff --git a/techlibs/ecp5/abc_map.v b/techlibs/ecp5/abc_map.v
new file mode 100644
index 000000000..ffd25f06d
--- /dev/null
+++ b/techlibs/ecp5/abc_map.v
@@ -0,0 +1,24 @@
+// ---------------------------------------
+
+module TRELLIS_DPR16X4 (
+ input [3:0] DI,
+ input [3:0] WAD,
+ input WRE,
+ input WCK,
+ input [3:0] RAD,
+ output [3:0] DO
+);
+ parameter WCKMUX = "WCK";
+ parameter WREMUX = "WRE";
+ parameter [63:0] INITVAL = 64'h0000000000000000;
+ wire [3:0] \$DO ;
+
+ TRELLIS_DPR16X4 #(
+ .WCKMUX(WCKMUX), .WREMUX(WREMUX), .INITVAL(INITVAL)
+ ) _TECHMAP_REPLACE_ (
+ .DI(DI), .WAD(WAD), .WRE(WRE), .WCK(WCK),
+ .RAD(RAD), .DO(\$DO )
+ );
+
+ \$__ABC_DPR16X4_COMB do (.A(\$DO ), .S(RAD), .Y(DO));
+endmodule
diff --git a/techlibs/ecp5/abc_model.v b/techlibs/ecp5/abc_model.v
new file mode 100644
index 000000000..56a733b75
--- /dev/null
+++ b/techlibs/ecp5/abc_model.v
@@ -0,0 +1,5 @@
+// ---------------------------------------
+
+(* abc_box_id=2 *)
+module \$__ABC_DPR16X4_COMB (input [3:0] A, S, output [3:0] Y);
+endmodule
diff --git a/techlibs/ecp5/abc_unmap.v b/techlibs/ecp5/abc_unmap.v
new file mode 100644
index 000000000..d43cdd93f
--- /dev/null
+++ b/techlibs/ecp5/abc_unmap.v
@@ -0,0 +1,5 @@
+// ---------------------------------------
+
+module \$__ABC_DPR16X4_COMB (input [3:0] A, S, output [3:0] Y);
+ assign Y = A;
+endmodule
diff --git a/techlibs/ecp5/cells_sim.v b/techlibs/ecp5/cells_sim.v
index dc8334acb..01b10f392 100644
--- a/techlibs/ecp5/cells_sim.v
+++ b/techlibs/ecp5/cells_sim.v
@@ -109,16 +109,13 @@ module PFUMX (input ALUT, BLUT, C0, output Z);
endmodule
// ---------------------------------------
-//(* abc_box_id=2 *)
module TRELLIS_DPR16X4 (
- (* abc_scc_break *)
input [3:0] DI,
- (* abc_scc_break *)
input [3:0] WAD,
- (* abc_scc_break *)
input WRE,
input WCK,
input [3:0] RAD,
+ /* (* abc_arrival=<TODO> *) */
output [3:0] DO
);
parameter WCKMUX = "WCK";
diff --git a/techlibs/ecp5/synth_ecp5.cc b/techlibs/ecp5/synth_ecp5.cc
index a8075e86e..2593546e0 100644
--- a/techlibs/ecp5/synth_ecp5.cc
+++ b/techlibs/ecp5/synth_ecp5.cc
@@ -280,12 +280,17 @@ struct SynthEcp5Pass : public ScriptPass
if (abc2 || help_mode) {
run("abc", " (only if -abc2)");
}
- run("techmap -map +/ecp5/latches_map.v");
+ std::string techmap_args = "-map +/ecp5/latches_map.v";
+ if (abc9)
+ techmap_args += " -map +/ecp5/abc_map.v -max_iter 1";
+ run("techmap " + techmap_args);
+
if (abc9) {
if (nowidelut)
run("abc9 -lut +/ecp5/abc_5g_nowide.lut -box +/ecp5/abc_5g.box -W 200");
else
run("abc9 -lut +/ecp5/abc_5g.lut -box +/ecp5/abc_5g.box -W 200");
+ run("techmap -map +/ecp5/abc_unmap.v");
} else {
if (nowidelut)
run("abc -lut 4 -dress");
diff --git a/techlibs/xilinx/Makefile.inc b/techlibs/xilinx/Makefile.inc
index 2b1af289c..2efcf7d90 100644
--- a/techlibs/xilinx/Makefile.inc
+++ b/techlibs/xilinx/Makefile.inc
@@ -39,6 +39,9 @@ $(eval $(call add_share_file,share/xilinx,techlibs/xilinx/ff_map.v))
$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/lut_map.v))
$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/mux_map.v))
+$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc_map.v))
+$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc_unmap.v))
+$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc_model.v))
$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc_xc7.box))
$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc_xc7.lut))
$(eval $(call add_share_file,share/xilinx,techlibs/xilinx/abc_xc7_nowide.lut))
diff --git a/techlibs/xilinx/abc_map.v b/techlibs/xilinx/abc_map.v
new file mode 100644
index 000000000..c3701b1a8
--- /dev/null
+++ b/techlibs/xilinx/abc_map.v
@@ -0,0 +1,125 @@
+/*
+ * yosys -- Yosys Open SYnthesis Suite
+ *
+ * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
+ * 2019 Eddie Hung <eddie@fpgeh.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+// ============================================================================
+
+module RAM32X1D (
+ output DPO, SPO,
+ input D,
+ input WCLK,
+ input WE,
+ input A0, A1, A2, A3, A4,
+ input DPRA0, DPRA1, DPRA2, DPRA3, DPRA4
+);
+ parameter INIT = 32'h0;
+ parameter IS_WCLK_INVERTED = 1'b0;
+ wire \$DPO , \$SPO ;
+ RAM32X1D #(
+ .INIT(INIT), .IS_WCLK_INVERTED(IS_WCLK_INVERTED)
+ ) _TECHMAP_REPLACE_ (
+ .DPO(\$DPO ), .SPO(\$SPO ),
+ .D(D), .WCLK(WCLK), .WE(WE),
+ .A0(A0), .A1(A1), .A2(A2), .A3(A3), .A4(A4),
+ .DPRA0(DPRA0), .DPRA1(DPRA1), .DPRA2(DPRA2), .DPRA3(DPRA3), .DPRA4(DPRA4)
+ );
+ \$__ABC_LUT6 dpo (.A(\$DPO ), .S({1'b0, A0, A1, A2, A3, A4}), .Y(DPO));
+ \$__ABC_LUT6 spo (.A(\$SPO ), .S({1'b0, A0, A1, A2, A3, A4}), .Y(SPO));
+endmodule
+
+module RAM64X1D (
+ output DPO, SPO,
+ input D,
+ input WCLK,
+ input WE,
+ input A0, A1, A2, A3, A4, A5,
+ input DPRA0, DPRA1, DPRA2, DPRA3, DPRA4, DPRA5
+);
+ parameter INIT = 64'h0;
+ parameter IS_WCLK_INVERTED = 1'b0;
+ wire \$DPO , \$SPO ;
+ RAM64X1D #(
+ .INIT(INIT), .IS_WCLK_INVERTED(IS_WCLK_INVERTED)
+ ) _TECHMAP_REPLACE_ (
+ .DPO(\$DPO ), .SPO(\$SPO ),
+ .D(D), .WCLK(WCLK), .WE(WE),
+ .A0(A0), .A1(A1), .A2(A2), .A3(A3), .A4(A4), .A5(A5),
+ .DPRA0(DPRA0), .DPRA1(DPRA1), .DPRA2(DPRA2), .DPRA3(DPRA3), .DPRA4(DPRA4), .DPRA5(DPRA5)
+ );
+ \$__ABC_LUT6 dpo (.A(\$DPO ), .S({A0, A1, A2, A3, A4, A5}), .Y(DPO));
+ \$__ABC_LUT6 spo (.A(\$SPO ), .S({A0, A1, A2, A3, A4, A5}), .Y(SPO));
+endmodule
+
+module RAM128X1D (
+ output DPO, SPO,
+ input D,
+ input WCLK,
+ input WE,
+ input [6:0] A, DPRA
+);
+ parameter INIT = 128'h0;
+ parameter IS_WCLK_INVERTED = 1'b0;
+ wire \$DPO , \$SPO ;
+ RAM128X1D #(
+ .INIT(INIT), .IS_WCLK_INVERTED(IS_WCLK_INVERTED)
+ ) _TECHMAP_REPLACE_ (
+ .DPO(\$DPO ), .SPO(\$SPO ),
+ .D(D), .WCLK(WCLK), .WE(WE),
+ .A(A),
+ .DPRA(DPRA)
+ );
+ \$__ABC_LUT7 dpo (.A(\$DPO ), .S(A), .Y(DPO));
+ \$__ABC_LUT7 spo (.A(\$SPO ), .S(A), .Y(SPO));
+endmodule
+
+module SRL16E (
+ output Q,
+ input A0, A1, A2, A3, CE, CLK, D
+);
+ parameter [15:0] INIT = 16'h0000;
+ parameter [0:0] IS_CLK_INVERTED = 1'b0;
+ wire \$Q ;
+ SRL16E #(
+ .INIT(INIT), .IS_CLK_INVERTED(IS_CLK_INVERTED)
+ ) _TECHMAP_REPLACE_ (
+ .Q(\$Q ),
+ .A0(A0), .A1(A1), .A2(A2), .A3(A3), .CE(CE), .CLK(CLK), .D(D)
+ );
+ // TODO: Check if SRL uses fast inputs or slow inputs
+ \$__ABC_LUT6 q (.A(\$Q ), .S({A0, A1, A2, A3, 1'b0, 1'b0}), .Y(Q));
+endmodule
+
+module SRLC32E (
+ output Q,
+ output Q31,
+ input [4:0] A,
+ input CE, CLK, D
+);
+ parameter [31:0] INIT = 32'h00000000;
+ parameter [0:0] IS_CLK_INVERTED = 1'b0;
+ wire \$Q ;
+ SRLC32E #(
+ .INIT(INIT), .IS_CLK_INVERTED(IS_CLK_INVERTED)
+ ) _TECHMAP_REPLACE_ (
+ .Q(\$Q ), .Q31(Q31),
+ .A(A), .CE(CE), .CLK(CLK), .D(D)
+ );
+ // TODO: Check if SRL uses fast inputs or slow inputs
+ \$__ABC_LUT6 q (.A(\$Q ), .S({A, 1'b0}), .Y(Q));
+endmodule
diff --git a/techlibs/xilinx/abc_model.v b/techlibs/xilinx/abc_model.v
new file mode 100644
index 000000000..655b993f6
--- /dev/null
+++ b/techlibs/xilinx/abc_model.v
@@ -0,0 +1,34 @@
+/*
+ * yosys -- Yosys Open SYnthesis Suite
+ *
+ * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
+ * 2019 Eddie Hung <eddie@fpgeh.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+// ============================================================================
+
+(* abc_box_id = 3, lib_whitebox *)
+module \$__XILINX_MUXF78 (output O, input I0, I1, I2, I3, S0, S1);
+ assign O = S1 ? (S0 ? I3 : I2)
+ : (S0 ? I1 : I0);
+endmodule
+
+(* abc_box_id=2000 *)
+module \$__ABC_LUT6 (input A, input [5:0] S, output Y);
+endmodule
+(* abc_box_id=2001 *)
+module \$__ABC_LUT7 (input A, input [6:0] S, output Y);
+endmodule
diff --git a/techlibs/xilinx/abc_unmap.v b/techlibs/xilinx/abc_unmap.v
new file mode 100644
index 000000000..f101a22d0
--- /dev/null
+++ b/techlibs/xilinx/abc_unmap.v
@@ -0,0 +1,28 @@
+/*
+ * yosys -- Yosys Open SYnthesis Suite
+ *
+ * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
+ * 2019 Eddie Hung <eddie@fpgeh.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+// ============================================================================
+
+module \$__ABC_LUT6 (input A, input [5:0] S, output Y);
+ assign Y = A;
+endmodule
+module \$__ABC_LUT7 (input A, input [6:0] S, output Y);
+ assign Y = A;
+endmodule
diff --git a/techlibs/xilinx/abc_xc7.box b/techlibs/xilinx/abc_xc7.box
index 3789ff350..554cc0cf0 100644
--- a/techlibs/xilinx/abc_xc7.box
+++ b/techlibs/xilinx/abc_xc7.box
@@ -1,4 +1,5 @@
# Max delays from https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLL_L.sdf
+# https://github.com/SymbiFlow/prjxray-db/blob/23c8b0851f979f0799318eaca90174413a46b257/artix7/timings/slicel.sdf
# NB: Inputs/Outputs must be ordered alphabetically
# (with exceptions for carry in/out)
@@ -14,6 +15,7 @@ F7MUX 1 1 3 1
MUXF8 2 1 3 1
104 94 273
+# Box containing MUXF7.[AB] + MUXF8
# Inputs: I0 I1 I2 I3 S0 S1
# Outputs: O
$__MUXF78 3 1 6 1
@@ -37,22 +39,15 @@ CARRY4 4 1 10 8
580 526 507 398 385 508 528 378 380 114
# SLICEM/A6LUT
-# Inputs: A0 A1 A2 A3 A4 D DPRA0 DPRA1 DPRA2 DPRA3 DPRA4 WCLK WE
+# Box to emulate comb/seq behaviour of RAMD{32,64} and SRL{16,32}
+# Inputs: A S0 S1 S2 S3 S4 S5
+# Outputs: Y
+$__ABC_LUT6 2000 0 7 1
+0 642 631 472 407 238 127
+
+# SLICEM/A6LUT + F7BMUX
+# Box to emulate comb/seq behaviour of RAMD128
+# Inputs: A S0 S1 S2 S3 S4 S5 S6
# Outputs: DPO SPO
-RAM32X1D 5 0 13 2
-- - - - - - 631 472 407 238 127 - -
-631 472 407 238 127 - - - - - - - -
-
-# SLICEM/A6LUT
-# Inputs: A0 A1 A2 A3 A4 A5 D DPRA0 DPRA1 DPRA2 DPRA3 DPRA4 DPRA5 WCLK WE
-# Outputs: DPO SPO
-RAM64X1D 6 0 15 2
-- - - - - - - 642 631 472 407 238 127 - -
-642 631 472 407 238 127 - - - - - - - - -
-
-# SLICEM/A6LUT + F7[AB]MUX
-# Inputs: A0 A1 A2 A3 A4 A5 A6 D DPRA0 DPRA1 DPRA2 DPRA3 DPRA4 DPRA5 DPRA6 WCLK WE
-# Outputs: DPO SPO
-RAM128X1D 7 0 17 2
-- - - - - - - - 1009 998 839 774 605 494 450 - -
-1047 1036 877 812 643 532 478 - - - - - - - - - -
+$__ABC_LUT7 2001 0 8 1
+0 1047 1036 877 812 643 532 478
diff --git a/techlibs/xilinx/cells_map.v b/techlibs/xilinx/cells_map.v
index b8e5bafc7..a15884ec4 100644
--- a/techlibs/xilinx/cells_map.v
+++ b/techlibs/xilinx/cells_map.v
@@ -331,7 +331,6 @@ module \$_MUX16_ (A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, S, T, U, V, Y)
endmodule
`endif
-`ifndef _ABC
module \$__XILINX_MUXF78 (O, I0, I1, I2, I3, S0, S1);
output O;
input I0, I1, I2, I3, S0, S1;
@@ -364,4 +363,3 @@ module \$__XILINX_MUXF78 (O, I0, I1, I2, I3, S0, S1);
else
MUXF8 mux8 (.I0(T0), .I1(T1), .S(S1), .O(O));
endmodule
-`endif
diff --git a/techlibs/xilinx/cells_sim.v b/techlibs/xilinx/cells_sim.v
index e12b77c02..b4657daca 100644
--- a/techlibs/xilinx/cells_sim.v
+++ b/techlibs/xilinx/cells_sim.v
@@ -184,14 +184,6 @@ module MUXF8(output O, input I0, I1, S);
assign O = S ? I1 : I0;
endmodule
-`ifdef _ABC
-(* abc_box_id = 3, lib_whitebox *)
-module \$__XILINX_MUXF78 (output O, input I0, I1, I2, I3, S0, S1);
- assign O = S1 ? (S0 ? I3 : I2)
- : (S0 ? I1 : I0);
-endmodule
-`endif
-
module XORCY(output O, input CI, LI);
assign O = CI ^ LI;
endmodule
@@ -236,7 +228,15 @@ endmodule
`endif
-module FDRE (output reg Q, (* clkbuf_sink *) input C, input CE, D, R);
+// Max delay from: https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLL_L.sdf#L238-L250
+
+module FDRE (
+ (* abc_arrival=303 *)
+ output reg Q,
+ (* clkbuf_sink *)
+ input C,
+ input CE, D, R
+);
parameter [0:0] INIT = 1'b0;
parameter [0:0] IS_C_INVERTED = 1'b0;
parameter [0:0] IS_D_INVERTED = 1'b0;
@@ -248,7 +248,13 @@ module FDRE (output reg Q, (* clkbuf_sink *) input C, input CE, D, R);
endcase endgenerate
endmodule
-module FDSE (output reg Q, (* clkbuf_sink *) input C, input CE, D, S);
+module FDSE (
+ (* abc_arrival=303 *)
+ output reg Q,
+ (* clkbuf_sink *)
+ input C,
+ input CE, D, S
+);
parameter [0:0] INIT = 1'b1;
parameter [0:0] IS_C_INVERTED = 1'b0;
parameter [0:0] IS_D_INVERTED = 1'b0;
@@ -260,7 +266,13 @@ module FDSE (output reg Q, (* clkbuf_sink *) input C, input CE, D, S);
endcase endgenerate
endmodule
-module FDCE (output reg Q, (* clkbuf_sink *) input C, input CE, D, CLR);
+module FDCE (
+ (* abc_arrival=303 *)
+ output reg Q,
+ (* clkbuf_sink *)
+ input C,
+ input CE, D, CLR
+);
parameter [0:0] INIT = 1'b0;
parameter [0:0] IS_C_INVERTED = 1'b0;
parameter [0:0] IS_D_INVERTED = 1'b0;
@@ -274,7 +286,13 @@ module FDCE (output reg Q, (* clkbuf_sink *) input C, input CE, D, CLR);
endcase endgenerate
endmodule
-module FDPE (output reg Q, (* clkbuf_sink *) input C, input CE, D, PRE);
+module FDPE (
+ (* abc_arrival=303 *)
+ output reg Q,
+ (* clkbuf_sink *)
+ input C,
+ input CE, D, PRE
+);
parameter [0:0] INIT = 1'b1;
parameter [0:0] IS_C_INVERTED = 1'b0;
parameter [0:0] IS_D_INVERTED = 1'b0;
@@ -288,38 +306,61 @@ module FDPE (output reg Q, (* clkbuf_sink *) input C, input CE, D, PRE);
endcase endgenerate
endmodule
-module FDRE_1 (output reg Q, (* clkbuf_sink *) input C, input CE, D, R);
+module FDRE_1 (
+ (* abc_arrival=303 *)
+ output reg Q,
+ (* clkbuf_sink *)
+ input C,
+ input CE, D, R
+);
parameter [0:0] INIT = 1'b0;
initial Q <= INIT;
always @(negedge C) if (R) Q <= 1'b0; else if(CE) Q <= D;
endmodule
-module FDSE_1 (output reg Q, (* clkbuf_sink *) input C, input CE, D, S);
+module FDSE_1 (
+ (* abc_arrival=303 *)
+ output reg Q,
+ (* clkbuf_sink *)
+ input C,
+ input CE, D, S
+);
parameter [0:0] INIT = 1'b1;
initial Q <= INIT;
always @(negedge C) if (S) Q <= 1'b1; else if(CE) Q <= D;
endmodule
-module FDCE_1 (output reg Q, (* clkbuf_sink *) input C, input CE, D, CLR);
+module FDCE_1 (
+ (* abc_arrival=303 *)
+ output reg Q,
+ (* clkbuf_sink *)
+ input C,
+ input CE, D, CLR
+);
parameter [0:0] INIT = 1'b0;
initial Q <= INIT;
always @(negedge C, posedge CLR) if (CLR) Q <= 1'b0; else if (CE) Q <= D;
endmodule
-module FDPE_1 (output reg Q, (* clkbuf_sink *) input C, input CE, D, PRE);
+module FDPE_1 (
+ (* abc_arrival=303 *)
+ output reg Q,
+ (* clkbuf_sink *)
+ input C,
+ input CE, D, PRE
+);
parameter [0:0] INIT = 1'b1;
initial Q <= INIT;
always @(negedge C, posedge PRE) if (PRE) Q <= 1'b1; else if (CE) Q <= D;
endmodule
-(* abc_box_id = 5 *)
module RAM32X1D (
+ // Max delay from: https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLM_R.sdf#L957
+ (* abc_arrival=1153 *)
output DPO, SPO,
- (* abc_scc_break *)
input D,
(* clkbuf_sink *)
input WCLK,
- (* abc_scc_break *)
input WE,
input A0, A1, A2, A3, A4,
input DPRA0, DPRA1, DPRA2, DPRA3, DPRA4
@@ -335,14 +376,13 @@ module RAM32X1D (
always @(posedge clk) if (WE) mem[a] <= D;
endmodule
-(* abc_box_id = 6 *)
module RAM64X1D (
+ // Max delay from: https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLM_R.sdf#L957
+ (* abc_arrival=1153 *)
output DPO, SPO,
- (* abc_scc_break *)
input D,
(* clkbuf_sink *)
input WCLK,
- (* abc_scc_break *)
input WE,
input A0, A1, A2, A3, A4, A5,
input DPRA0, DPRA1, DPRA2, DPRA3, DPRA4, DPRA5
@@ -358,14 +398,13 @@ module RAM64X1D (
always @(posedge clk) if (WE) mem[a] <= D;
endmodule
-(* abc_box_id = 7 *)
module RAM128X1D (
- output DPO, SPO,
- (* abc_scc_break *)
+ // Max delay from: https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLM_R.sdf#L957
+ (* abc_arrival=1153 *)
+ output DPO, SPO,
input D,
(* clkbuf_sink *)
input WCLK,
- (* abc_scc_break *)
input WE,
input [6:0] A, DPRA
);
@@ -379,6 +418,8 @@ module RAM128X1D (
endmodule
module SRL16E (
+ // Max delay from: https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLM_R.sdf#L904-L905
+ (* abc_arrival=1472 *)
output Q,
input A0, A1, A2, A3, CE,
(* clkbuf_sink *)
@@ -423,7 +464,10 @@ module SRLC16E (
endmodule
module SRLC32E (
+ // Max delay from: https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLM_R.sdf#L904-L905
+ (* abc_arrival=1472 *)
output Q,
+ (* abc_arrival=1114 *)
output Q31,
input [4:0] A,
input CE,
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc
index f058da83d..db8c9fa31 100644
--- a/techlibs/xilinx/synth_xilinx.cc
+++ b/techlibs/xilinx/synth_xilinx.cc
@@ -268,9 +268,9 @@ struct SynthXilinxPass : public ScriptPass
{
if (check_label("begin")) {
if (vpr)
- run("read_verilog -lib -icells -D _ABC -D_EXPLICIT_CARRY +/xilinx/cells_sim.v");
+ run("read_verilog -lib -D_EXPLICIT_CARRY +/xilinx/cells_sim.v");
else
- run("read_verilog -lib -icells -D _ABC +/xilinx/cells_sim.v");
+ run("read_verilog -lib +/xilinx/cells_sim.v");
run("read_verilog -lib +/xilinx/cells_xtra.v");
@@ -414,7 +414,7 @@ struct SynthXilinxPass : public ScriptPass
}
if (check_label("map_cells")) {
- std::string techmap_args = "-map +/techmap.v -D _ABC -map +/xilinx/cells_map.v";
+ std::string techmap_args = "-map +/techmap.v -map +/xilinx/cells_map.v";
if (widemux > 0)
techmap_args += stringf(" -D MIN_MUX_INPUTS=%d", widemux);
run("techmap " + techmap_args);
@@ -426,10 +426,12 @@ struct SynthXilinxPass : public ScriptPass
if (flatten_before_abc)
run("flatten");
if (help_mode)
- run("abc -luts 2:2,3,6:5[,10,20] [-dff]", "(option for 'nowidelut', option for '-retime')");
+ run("abc -luts 2:2,3,6:5[,10,20] [-dff]", "(option for 'nowidelut'; option for '-retime')");
else if (abc9) {
if (family != "xc7")
log_warning("'synth_xilinx -abc9' currently supports '-family xc7' only.\n");
+ run("techmap -map +/xilinx/abc_map.v -max_iter 1");
+ run("read_verilog -icells -lib +/xilinx/abc_model.v");
if (nowidelut)
run("abc9 -lut +/xilinx/abc_xc7_nowide.lut -box +/xilinx/abc_xc7.box -W " + std::to_string(XC7_WIRE_DELAY));
else
@@ -447,7 +449,10 @@ struct SynthXilinxPass : public ScriptPass
// has performed any necessary retiming
if (!nosrl || help_mode)
run("shregmap -minlen 3 -init -params -enpol any_or_none", "(skip if '-nosrl')");
- run("techmap -map +/xilinx/lut_map.v -map +/xilinx/ff_map.v -map +/xilinx/cells_map.v");
+ std::string techmap_args = "-map +/xilinx/lut_map.v -map +/xilinx/ff_map.v";
+ if (abc9)
+ techmap_args += " -map +/xilinx/abc_unmap.v";
+ run("techmap " + techmap_args);
run("dffinit -ff FDRE Q INIT -ff FDCE Q INIT -ff FDPE Q INIT -ff FDSE Q INIT "
"-ff FDRE_1 Q INIT -ff FDCE_1 Q INIT -ff FDPE_1 Q INIT -ff FDSE_1 Q INIT");
run("clean");
diff --git a/techlibs/xilinx/xc7_brams_bb.v b/techlibs/xilinx/xc7_brams_bb.v
index a43b4b5a1..5b40a457d 100644
--- a/techlibs/xilinx/xc7_brams_bb.v
+++ b/techlibs/xilinx/xc7_brams_bb.v
@@ -1,3 +1,5 @@
+// Max delays from https://github.com/SymbiFlow/prjxray-db/blob/f8e0364116b2983ac72a3dc8c509ea1cc79e2e3d/artix7/timings/BRAM_L.sdf#L138-L147
+
module RAMB18E1 (
(* clkbuf_sink *)
input CLKARDCLK,
@@ -21,9 +23,13 @@ module RAMB18E1 (
input [1:0] WEA,
input [3:0] WEBWE,
+ (* abc_arrival=2454 *)
output [15:0] DOADO,
+ (* abc_arrival=2454 *)
output [15:0] DOBDO,
+ (* abc_arrival=2454 *)
output [1:0] DOPADOP,
+ (* abc_arrival=2454 *)
output [1:0] DOPBDOP
);
parameter INITP_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
@@ -147,9 +153,13 @@ module RAMB36E1 (
input [3:0] WEA,
input [7:0] WEBWE,
+ (* abc_arrival=2454 *)
output [31:0] DOADO,
+ (* abc_arrival=2454 *)
output [31:0] DOBDO,
+ (* abc_arrival=2454 *)
output [3:0] DOPADOP,
+ (* abc_arrival=2454 *)
output [3:0] DOPBDOP
);
parameter INITP_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-04 23:38:12 +0000