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-rw-r--r--techlibs/anlogic/Makefile.inc2
-rw-r--r--techlibs/anlogic/anlogic_determine_init.cc72
-rw-r--r--techlibs/anlogic/anlogic_fixcarry.cc130
-rw-r--r--techlibs/anlogic/arith_map.v44
-rw-r--r--techlibs/anlogic/synth_anlogic.cc7
5 files changed, 163 insertions, 92 deletions
diff --git a/techlibs/anlogic/Makefile.inc b/techlibs/anlogic/Makefile.inc
index 67cf9cf10..9426b5ca5 100644
--- a/techlibs/anlogic/Makefile.inc
+++ b/techlibs/anlogic/Makefile.inc
@@ -1,7 +1,7 @@
OBJS += techlibs/anlogic/synth_anlogic.o
OBJS += techlibs/anlogic/anlogic_eqn.o
-OBJS += techlibs/anlogic/anlogic_determine_init.o
+OBJS += techlibs/anlogic/anlogic_fixcarry.o
$(eval $(call add_share_file,share/anlogic,techlibs/anlogic/cells_map.v))
$(eval $(call add_share_file,share/anlogic,techlibs/anlogic/arith_map.v))
diff --git a/techlibs/anlogic/anlogic_determine_init.cc b/techlibs/anlogic/anlogic_determine_init.cc
deleted file mode 100644
index c4089dac2..000000000
--- a/techlibs/anlogic/anlogic_determine_init.cc
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * yosys -- Yosys Open SYnthesis Suite
- *
- * Copyright (C) 2018 Icenowy Zheng <icenowy@aosc.io>
- *
- * 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.
- *
- */
-
-#include "kernel/yosys.h"
-#include "kernel/sigtools.h"
-
-USING_YOSYS_NAMESPACE
-PRIVATE_NAMESPACE_BEGIN
-
-struct AnlogicDetermineInitPass : public Pass {
- AnlogicDetermineInitPass() : Pass("anlogic_determine_init", "Anlogic: Determine the init value of cells") { }
- void help() YS_OVERRIDE
- {
- log("\n");
- log(" anlogic_determine_init [selection]\n");
- log("\n");
- log("Determine the init value of cells that doesn't allow unknown init value.\n");
- log("\n");
- }
-
- Const determine_init(Const init)
- {
- for (int i = 0; i < GetSize(init); i++) {
- if (init[i] != State::S0 && init[i] != State::S1)
- init[i] = State::S0;
- }
-
- return init;
- }
-
- void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
- {
- log_header(design, "Executing ANLOGIC_DETERMINE_INIT pass (determine init value for cells).\n");
-
- extra_args(args, args.size(), design);
-
- int cnt = 0;
- for (auto module : design->selected_modules())
- {
- for (auto cell : module->selected_cells())
- {
- if (cell->type == "\\EG_LOGIC_DRAM16X4")
- {
- cell->setParam("\\INIT_D0", determine_init(cell->getParam("\\INIT_D0")));
- cell->setParam("\\INIT_D1", determine_init(cell->getParam("\\INIT_D1")));
- cell->setParam("\\INIT_D2", determine_init(cell->getParam("\\INIT_D2")));
- cell->setParam("\\INIT_D3", determine_init(cell->getParam("\\INIT_D3")));
- cnt++;
- }
- }
- }
- log_header(design, "Updated %d cells with determined init value.\n", cnt);
- }
-} AnlogicDetermineInitPass;
-
-PRIVATE_NAMESPACE_END
diff --git a/techlibs/anlogic/anlogic_fixcarry.cc b/techlibs/anlogic/anlogic_fixcarry.cc
new file mode 100644
index 000000000..87164d375
--- /dev/null
+++ b/techlibs/anlogic/anlogic_fixcarry.cc
@@ -0,0 +1,130 @@
+/*
+ * yosys -- Yosys Open SYnthesis Suite
+ *
+ * Copyright (C) 2019 Miodrag Milanovic <miodrag@symbioticeda.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.
+ *
+ */
+
+#include "kernel/yosys.h"
+#include "kernel/sigtools.h"
+
+USING_YOSYS_NAMESPACE
+PRIVATE_NAMESPACE_BEGIN
+
+static SigBit get_bit_or_zero(const SigSpec &sig)
+{
+ if (GetSize(sig) == 0)
+ return State::S0;
+ return sig[0];
+}
+
+static void fix_carry_chain(Module *module)
+{
+ SigMap sigmap(module);
+
+ pool<SigBit> ci_bits;
+ dict<SigBit, SigBit> mapping_bits;
+
+ for (auto cell : module->cells())
+ {
+ if (cell->type == "\\AL_MAP_ADDER") {
+ if (cell->getParam("\\ALUTYPE") != Const("ADD")) continue;
+ SigBit bit_i0 = get_bit_or_zero(cell->getPort("\\a"));
+ SigBit bit_i1 = get_bit_or_zero(cell->getPort("\\b"));
+ if (bit_i0 == State::S0 && bit_i1== State::S0) {
+ SigBit bit_ci = get_bit_or_zero(cell->getPort("\\c"));
+ SigSpec o = cell->getPort("\\o");
+ if (GetSize(o) == 2) {
+ SigBit bit_o = o[0];
+ ci_bits.insert(bit_ci);
+ mapping_bits[bit_ci] = bit_o;
+ }
+ }
+ }
+ }
+ vector<Cell*> adders_to_fix_cells;
+ for (auto cell : module->cells())
+ {
+ if (cell->type == "\\AL_MAP_ADDER") {
+ if (cell->getParam("\\ALUTYPE") != Const("ADD")) continue;
+ SigBit bit_ci = get_bit_or_zero(cell->getPort("\\c"));
+ SigBit bit_i0 = get_bit_or_zero(cell->getPort("\\a"));
+ SigBit bit_i1 = get_bit_or_zero(cell->getPort("\\b"));
+ SigBit canonical_bit = sigmap(bit_ci);
+ if (!ci_bits.count(canonical_bit))
+ continue;
+ if (bit_i0 == State::S0 && bit_i1== State::S0)
+ continue;
+
+ adders_to_fix_cells.push_back(cell);
+ log("Found %s cell named %s with invalid 'c' signal.\n", log_id(cell->type), log_id(cell));
+ }
+ }
+
+ for (auto cell : adders_to_fix_cells)
+ {
+ SigBit bit_ci = get_bit_or_zero(cell->getPort("\\c"));
+ SigBit canonical_bit = sigmap(bit_ci);
+ auto bit = mapping_bits.at(canonical_bit);
+ log("Fixing %s cell named %s breaking carry chain.\n", log_id(cell->type), log_id(cell));
+ Cell *c = module->addCell(NEW_ID, "\\AL_MAP_ADDER");
+ SigBit new_bit = module->addWire(NEW_ID);
+ SigBit dummy_bit = module->addWire(NEW_ID);
+ SigSpec bits;
+ bits.append(dummy_bit);
+ bits.append(new_bit);
+ c->setParam("\\ALUTYPE", Const("ADD_CARRY"));
+ c->setPort("\\a", bit);
+ c->setPort("\\b", State::S0);
+ c->setPort("\\c", State::S0);
+ c->setPort("\\o", bits);
+
+ cell->setPort("\\c", new_bit);
+ }
+
+}
+
+struct AnlogicCarryFixPass : public Pass {
+ AnlogicCarryFixPass() : Pass("anlogic_fixcarry", "Anlogic: fix carry chain") { }
+ void help() YS_OVERRIDE
+ {
+ // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
+ log("\n");
+ log(" anlogic_fixcarry [options] [selection]\n");
+ log("\n");
+ log("Add Anlogic adders to fix carry chain if needed.\n");
+ log("\n");
+ }
+ void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
+ {
+ log_header(design, "Executing anlogic_fixcarry pass (fix invalid carry chain).\n");
+
+ size_t argidx;
+ for (argidx = 1; argidx < args.size(); argidx++)
+ {
+ break;
+ }
+ extra_args(args, argidx, design);
+
+ Module *module = design->top_module();
+
+ if (module == nullptr)
+ log_cmd_error("No top module found.\n");
+
+ fix_carry_chain(module);
+ }
+} AnlogicCarryFixPass;
+
+PRIVATE_NAMESPACE_END
diff --git a/techlibs/anlogic/arith_map.v b/techlibs/anlogic/arith_map.v
index 6d6a7ca37..1186543da 100644
--- a/techlibs/anlogic/arith_map.v
+++ b/techlibs/anlogic/arith_map.v
@@ -31,7 +31,10 @@ module _80_anlogic_alu (A, B, CI, BI, X, Y, CO);
output [Y_WIDTH-1:0] X, Y;
input CI, BI;
- output CO;
+ output [Y_WIDTH-1:0] CO;
+
+ wire CIx;
+ wire [Y_WIDTH-1:0] COx;
wire _TECHMAP_FAIL_ = Y_WIDTH <= 2;
@@ -41,15 +44,16 @@ module _80_anlogic_alu (A, B, CI, BI, X, Y, CO);
wire [Y_WIDTH-1:0] AA = A_buf;
wire [Y_WIDTH-1:0] BB = BI ? ~B_buf : B_buf;
- wire [Y_WIDTH+1:0] COx;
- wire [Y_WIDTH+2:0] C = {COx, CI};
+ wire [Y_WIDTH-1:0] C = { COx, CIx };
wire dummy;
AL_MAP_ADDER #(
.ALUTYPE("ADD_CARRY"))
adder_cin (
- .a(C[0]),
- .o({COx[0], dummy})
+ .a(CI),
+ .b(1'b0),
+ .c(1'b0),
+ .o({CIx, dummy})
);
genvar i;
@@ -59,18 +63,22 @@ module _80_anlogic_alu (A, B, CI, BI, X, Y, CO);
) adder_i (
.a(AA[i]),
.b(BB[i]),
- .c(C[i+1]),
- .o({COx[i+1],Y[i]})
+ .c(C[i]),
+ .o({COx[i],Y[i]})
);
- end: slice
+
+ wire cout;
+ AL_MAP_ADDER #(
+ .ALUTYPE("ADD"))
+ adder_cout (
+ .a(1'b0),
+ .b(1'b0),
+ .c(COx[i]),
+ .o({cout, CO[i]})
+ );
+ end: slice
endgenerate
- /* End implementation */
- AL_MAP_ADDER #(
- .ALUTYPE("ADD"))
- adder_cout (
- .c(C[Y_WIDTH+1]),
- .o(COx[Y_WIDTH+1])
- );
- assign CO = COx[Y_WIDTH+1];
- assign X = AA ^ BB;
-endmodule \ No newline at end of file
+
+ /* End implementation */
+ assign X = AA ^ BB;
+endmodule
diff --git a/techlibs/anlogic/synth_anlogic.cc b/techlibs/anlogic/synth_anlogic.cc
index 620bf3965..b87fc8566 100644
--- a/techlibs/anlogic/synth_anlogic.cc
+++ b/techlibs/anlogic/synth_anlogic.cc
@@ -154,7 +154,7 @@ struct SynthAnlogicPass : public ScriptPass
{
run("memory_bram -rules +/anlogic/drams.txt");
run("techmap -map +/anlogic/drams_map.v");
- run("anlogic_determine_init");
+ run("setundef -zero -params t:EG_LOGIC_DRAM16X4");
}
if (check_label("fine"))
@@ -186,6 +186,11 @@ struct SynthAnlogicPass : public ScriptPass
{
run("techmap -map +/anlogic/cells_map.v");
run("clean");
+ }
+
+ if (check_label("map_anlogic"))
+ {
+ run("anlogic_fixcarry");
run("anlogic_eqn");
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 01:36:32 +0000