1 files changed, 90 insertions, 0 deletions
diff --git a/gowin/main.cc b/gowin/main.cc
new file mode 100644
index 00000000..c845821d
--- /dev/null
+++ b/gowin/main.cc
@@ -0,0 +1,90 @@
+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2018  Claire Wolf <claire@symbioticeda.com>
+ *  Copyright (C) 2020  Pepijn de Vos <pepijn@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.
+ *
+ */
+
+#ifdef MAIN_EXECUTABLE
+
+#include <fstream>
+#include <regex>
+#include "command.h"
+#include "design_utils.h"
+#include "log.h"
+#include "timing.h"
+
+USING_NEXTPNR_NAMESPACE
+
+class GowinCommandHandler : public CommandHandler
+{
+  public:
+    GowinCommandHandler(int argc, char **argv);
+    virtual ~GowinCommandHandler(){};
+    std::unique_ptr<Context> createContext(std::unordered_map<std::string, Property> &values) override;
+    void setupArchContext(Context *ctx) override{};
+    void customAfterLoad(Context *ctx) override;
+
+  protected:
+    po::options_description getArchOptions() override;
+};
+
+GowinCommandHandler::GowinCommandHandler(int argc, char **argv) : CommandHandler(argc, argv) {}
+
+po::options_description GowinCommandHandler::getArchOptions()
+{
+    po::options_description specific("Architecture specific options");
+    specific.add_options()("device", po::value<std::string>(), "device name");
+    specific.add_options()("cst", po::value<std::string>(), "physical constraints file");
+    return specific;
+}
+
+std::unique_ptr<Context> GowinCommandHandler::createContext(std::unordered_map<std::string, Property> &values)
+{
+    std::regex devicere = std::regex("GW1N([A-Z]*)-(LV|UV)([0-9])([A-Z]{2}[0-9]+)(C[0-9]/I[0-9])");
+    std::smatch match;
+    std::string device = vm["device"].as<std::string>();
+    if(!std::regex_match(device, match, devicere)) {
+        log_error("Invalid device %s\n", device.c_str());
+    }
+    ArchArgs chipArgs;
+    char buf[32];
+    snprintf(buf, 32, "GW1N%s-%s", match[1].str().c_str(), match[3].str().c_str());
+    chipArgs.device = buf;
+    snprintf(buf, 32, "GW1N-%s", match[3].str().c_str());
+    chipArgs.family = buf;
+    chipArgs.package = match[4];
+    chipArgs.speed = match[5];
+    return std::unique_ptr<Context>(new Context(chipArgs));
+}
+
+void GowinCommandHandler::customAfterLoad(Context *ctx)
+{
+    if (vm.count("cst")) {
+        std::string filename = vm["cst"].as<std::string>();
+        std::ifstream in(filename);
+        if (!in)
+            log_error("Failed to open input CST file %s.\n", filename.c_str());
+        ctx->read_cst(in);
+    }
+}
+
+int main(int argc, char *argv[])
+{
+    GowinCommandHandler handler(argc, argv);
+    return handler.exec();
+}
+#endif