b8ab3116b2
The dedicated router for clock wires now understands not only the IO pins but also the rPLL outputs as clock sources. This simple router sets an optimal route, so it is now the default router. It can be disabled with the --disable-globals command line flag if desired, but this is not recommended due to possible clock skew. Still for GW1N-4C there is no good router for clock wires as there external quartz resonator is connected via PLL. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
116 lines
4.2 KiB
C++
116 lines
4.2 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2018 Claire Xenia Wolf <claire@yosyshq.com>
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* Copyright (C) 2020 Pepijn de Vos <pepijn@symbioticeda.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#ifdef MAIN_EXECUTABLE
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#include <fstream>
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#include <locale>
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#include <regex>
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#include "command.h"
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#include "design_utils.h"
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#include "log.h"
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#include "timing.h"
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USING_NEXTPNR_NAMESPACE
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class GowinCommandHandler : public CommandHandler
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{
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public:
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GowinCommandHandler(int argc, char **argv);
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virtual ~GowinCommandHandler(){};
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std::unique_ptr<Context> createContext(dict<std::string, Property> &values) override;
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void setupArchContext(Context *ctx) override{};
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void customAfterLoad(Context *ctx) override;
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protected:
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po::options_description getArchOptions() override;
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};
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GowinCommandHandler::GowinCommandHandler(int argc, char **argv) : CommandHandler(argc, argv) {}
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po::options_description GowinCommandHandler::getArchOptions()
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{
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po::options_description specific("Architecture specific options");
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specific.add_options()("device", po::value<std::string>(), "device name");
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specific.add_options()("family", po::value<std::string>(), "family name");
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specific.add_options()("cst", po::value<std::string>(), "physical constraints file");
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specific.add_options()("enable-globals", "enable separate routing of the clocks");
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specific.add_options()("disable-globals", "disable separate routing of the clocks");
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specific.add_options()("enable-auto-longwires", "automatic detection and routing of long wires");
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return specific;
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}
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std::unique_ptr<Context> GowinCommandHandler::createContext(dict<std::string, Property> &values)
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{
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if (!vm.count("device")) {
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log_error("The device must be specified\n");
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}
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std::regex devicere = std::regex("GW1N([SZ]?)[A-Z]*-(LV|UV|UX)([0-9])(C?).*");
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std::smatch match;
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std::string device = vm["device"].as<std::string>();
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if (!std::regex_match(device, match, devicere)) {
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log_error("Invalid device %s\n", device.c_str());
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}
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ArchArgs chipArgs;
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chipArgs.gui = vm.count("gui") != 0;
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if (vm.count("family")) {
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chipArgs.family = vm["family"].as<std::string>();
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} else {
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char buf[36];
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// GW1N and GW1NR variants share the same database.
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// Most Gowin devices are a System in Package with some SDRAM wirebonded to a GPIO bank.
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// However, it appears that the S series with embedded ARM core are unique silicon.
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snprintf(buf, 36, "GW1N%s-%s", match[1].str().c_str(), match[3].str().c_str());
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chipArgs.family = buf;
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}
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chipArgs.partnumber = match[0];
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auto ctx = std::unique_ptr<Context>(new Context(chipArgs));
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// routing options
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ctx->settings[ctx->id("arch.enable-globals")] = 1;
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ctx->settings[ctx->id("arch.enable-auto-longwires")] = 0;
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if (vm.count("disable-globals")) {
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ctx->settings[ctx->id("arch.enable-globals")] = 0;
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}
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if (vm.count("enable-auto-longwires")) {
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ctx->settings[ctx->id("arch.enable-auto-longwires")] = 1;
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}
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return ctx;
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}
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void GowinCommandHandler::customAfterLoad(Context *ctx)
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{
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if (vm.count("cst")) {
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std::string filename = vm["cst"].as<std::string>();
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std::ifstream in(filename);
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if (!in)
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log_error("Failed to open input CST file %s.\n", filename.c_str());
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ctx->read_cst(in);
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}
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}
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int main(int argc, char *argv[])
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{
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GowinCommandHandler handler(argc, argv);
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return handler.exec();
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}
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#endif
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