8d1eb0a195
Currently the lookahead is disabled by default because of the time to compute and RAM usage. However it does appear to work reasonably well in testing. Further effort is required to lower RAM usage after initial computation, and explore trade-off for cheaper time to compute. Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
125 lines
4.2 KiB
C++
125 lines
4.2 KiB
C++
/*
|
|
* nextpnr -- Next Generation Place and Route
|
|
*
|
|
* Copyright (C) 2018 Claire Wolf <claire@symbioticeda.com>
|
|
* Copyright (C) 2021 Symbiflow Authors
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#ifdef MAIN_EXECUTABLE
|
|
|
|
#include <chrono>
|
|
#include <fstream>
|
|
|
|
#include "command.h"
|
|
#include "design_utils.h"
|
|
#include "jsonwrite.h"
|
|
#include "log.h"
|
|
#include "timing.h"
|
|
|
|
USING_NEXTPNR_NAMESPACE
|
|
|
|
class FpgaInterchangeCommandHandler : public CommandHandler
|
|
{
|
|
public:
|
|
FpgaInterchangeCommandHandler(int argc, char **argv);
|
|
virtual ~FpgaInterchangeCommandHandler(){};
|
|
std::unique_ptr<Context> createContext(std::unordered_map<std::string, Property> &values) override;
|
|
void setupArchContext(Context *ctx) override{};
|
|
void customBitstream(Context *ctx) override;
|
|
void customAfterLoad(Context *ctx) override;
|
|
|
|
protected:
|
|
po::options_description getArchOptions() override;
|
|
};
|
|
|
|
FpgaInterchangeCommandHandler::FpgaInterchangeCommandHandler(int argc, char **argv) : CommandHandler(argc, argv) {}
|
|
|
|
po::options_description FpgaInterchangeCommandHandler::getArchOptions()
|
|
{
|
|
po::options_description specific("Architecture specific options");
|
|
specific.add_options()("chipdb", po::value<std::string>(), "name of chip database binary");
|
|
specific.add_options()("xdc", po::value<std::vector<std::string>>(), "XDC-style constraints file to read");
|
|
specific.add_options()("netlist", po::value<std::string>(), "FPGA interchange logical netlist to read");
|
|
specific.add_options()("phys", po::value<std::string>(), "FPGA interchange Physical netlist to write");
|
|
specific.add_options()("package", po::value<std::string>(), "Package to use");
|
|
specific.add_options()("rebuild-lookahead", "Ignore lookahead cache and rebuild");
|
|
specific.add_options()("dont-write-lookahead", "Don't write the lookahead file");
|
|
|
|
return specific;
|
|
}
|
|
|
|
void FpgaInterchangeCommandHandler::customBitstream(Context *ctx)
|
|
{
|
|
if (vm.count("phys")) {
|
|
std::string filename = vm["phys"].as<std::string>();
|
|
ctx->write_physical_netlist(filename);
|
|
}
|
|
}
|
|
|
|
std::unique_ptr<Context> FpgaInterchangeCommandHandler::createContext(std::unordered_map<std::string, Property> &values)
|
|
{
|
|
auto start = std::chrono::high_resolution_clock::now();
|
|
|
|
ArchArgs chipArgs;
|
|
chipArgs.rebuild_lookahead = vm.count("rebuild_lookahead") != 0;
|
|
chipArgs.dont_write_lookahead = vm.count("dont_write_lookahead") != 0;
|
|
|
|
if (!vm.count("chipdb")) {
|
|
log_error("chip database binary must be provided\n");
|
|
}
|
|
chipArgs.chipdb = vm["chipdb"].as<std::string>();
|
|
if (vm.count("package")) {
|
|
chipArgs.package = vm["package"].as<std::string>();
|
|
}
|
|
|
|
auto ctx = std::unique_ptr<Context>(new Context(chipArgs));
|
|
|
|
if (vm.count("verbose")) {
|
|
ctx->verbose = true;
|
|
}
|
|
if (vm.count("debug")) {
|
|
ctx->verbose = true;
|
|
ctx->debug = true;
|
|
}
|
|
|
|
ctx->init();
|
|
|
|
if (vm.count("netlist")) {
|
|
ctx->read_logical_netlist(vm["netlist"].as<std::string>());
|
|
}
|
|
|
|
if (vm.count("xdc")) {
|
|
for (auto &x : vm["xdc"].as<std::vector<std::string>>()) {
|
|
ctx->parse_xdc(x);
|
|
}
|
|
}
|
|
|
|
auto end = std::chrono::high_resolution_clock::now();
|
|
log_info("createContext time %.02fs\n", std::chrono::duration<float>(end - start).count());
|
|
|
|
return ctx;
|
|
}
|
|
|
|
void FpgaInterchangeCommandHandler::customAfterLoad(Context *ctx) {}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
FpgaInterchangeCommandHandler handler(argc, argv);
|
|
return handler.exec();
|
|
}
|
|
|
|
#endif
|