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add qlf_k6n10f architecture + bram inference

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(Copied from QuickLogic Yosys plugin repo)
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N. Engelhardt 2023-11-27 09:42:40 +01:00 • committed by Martin Povišer
parent 98769010af
commit 48c1fdc33d
13 changed files with 90338 additions and 21 deletions
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techlibs/quicklogic/quicklogic_eqn.cc Normal file
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/*
* Copyright 2020-2022 F4PGA Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
*
*/
#include "kernel/sigtools.h"
#include "kernel/yosys.h"
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
struct QuicklogicEqnPass : public Pass {
QuicklogicEqnPass() : Pass("quicklogic_eqn", "Quicklogic: Calculate equations for luts") {}
void help() override
{
log("\n");
log(" quicklogic_eqn [selection]\n");
log("\n");
log("Calculate equations for luts since bitstream generator depends on it.\n");
log("\n");
}
Const init2eqn(Const init, int inputs)
{
std::string init_bits = init.as_string();
const char *names[] = {"I0", "I1", "I2", "I3", "I4"};
std::string eqn;
int width = (int)pow(2, inputs);
for (int i = 0; i < width; i++) {
if (init_bits[width - 1 - i] == '1') {
eqn += "(";
for (int j = 0; j < inputs; j++) {
if (i & (1 << j))
eqn += names[j];
else
eqn += std::string("~") + names[j];
if (j != (inputs - 1))
eqn += "*";
}
eqn += ")+";
}
}
if (eqn.empty())
return Const("0");
eqn = eqn.substr(0, eqn.length() - 1);
return Const(eqn);
}
void execute(std::vector<std::string> args, RTLIL::Design *design) override
{
log_header(design, "Executing Quicklogic_EQN pass (calculate equations for luts).\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 == ID(LUT1)) {
cell->setParam(ID(EQN), init2eqn(cell->getParam(ID::INIT), 1));
cnt++;
}
if (cell->type == ID(LUT2)) {
cell->setParam(ID(EQN), init2eqn(cell->getParam(ID::INIT), 2));
cnt++;
}
if (cell->type == ID(LUT3)) {
cell->setParam(ID(EQN), init2eqn(cell->getParam(ID::INIT), 3));
cnt++;
}
if (cell->type == ID(LUT4)) {
cell->setParam(ID(EQN), init2eqn(cell->getParam(ID::INIT), 4));
cnt++;
}
if (cell->type == ID(LUT5)) {
cell->setParam(ID(EQN), init2eqn(cell->getParam(ID::INIT), 5));
cnt++;
}
}
}
log_header(design, "Updated %d of LUT* elements with equation.\n", cnt);
}
} QuicklogicEqnPass;
PRIVATE_NAMESPACE_END