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https://github.com/YosysHQ/yosys
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WIP stubber
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1 changed files with 80 additions and 1 deletions
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@ -17,10 +17,61 @@
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*
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*/
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#include "kernel/yosys.h"
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#include "kernel/celltypes.h"
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USING_YOSYS_NAMESPACE
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PRIVATE_NAMESPACE_BEGIN
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struct LibertyStubber {
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CellTypes ct;
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CellTypes ct_ff;
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LibertyStubber() {
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ct.setup();
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ct.setup_internals_ff();
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}
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void liberty_prefix(std::ostream& f)
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{
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f << "library (yosys) {\n";
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f << "\tinput_threshold_pct_fall : 50;\n";
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f << "\tinput_threshold_pct_rise : 50;\n";
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f << "\toutput_threshold_pct_fall : 50;\n";
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f << "\toutput_threshold_pct_rise : 50;\n";
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f << "\tslew_lower_threshold_pct_fall : 1;\n";
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f << "\tslew_lower_threshold_pct_rise : 1;\n";
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f << "\tslew_upper_threshold_pct_fall : 99;\n";
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f << "\tslew_upper_threshold_pct_rise : 99;\n";
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}
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void liberty_suffix(std::ostream& f)
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{
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f << "}\n";
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}
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void liberty_cell(Module* base, Module* derived, std::ostream& f)
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{
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auto base_name = base->name.str().substr(1);
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auto derived_name = derived->name.str().substr(1);
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if (!ct.cell_types.count(base_name)) {
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log_debug("skip skeleton for %s\n", base_name.c_str());
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return;
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}
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auto& base_type = ct.cell_types[base_name];
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f << "\tcell (" << derived_name << ") {\n";
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for (auto x : derived->ports) {
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bool is_input = base_type.inputs.count(x);
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bool is_output = base_type.outputs.count(x);
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f << "\t\tpin (" << RTLIL::unescape_id(x.str()) << ") {\n";
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if (is_input && !is_output) {
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f << "\t\t\tdirection : input;\n";
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} else if (!is_input && is_output) {
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f << "\t\t\tdirection : output;\n";
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} else {
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f << "\t\t\tdirection : inout;\n";
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}
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f << "\t\t}\n";
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}
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f << "\t}\n";
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}
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};
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struct BoxDerivePass : Pass {
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BoxDerivePass() : Pass("box_derive", "derive box modules") {}
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void help() override
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@ -51,6 +102,8 @@ struct BoxDerivePass : Pass {
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log(" replaces the internal Yosys naming scheme in which the names of derived\n");
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log(" modules start with '$paramod$')\n");
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log("\n");
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log(" -liberty <file>\n"); // TODO
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log("\n");
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log(" -apply\n");
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log(" use the derived modules\n");
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log("\n");
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@ -62,12 +115,17 @@ struct BoxDerivePass : Pass {
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size_t argidx;
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IdString naming_attr;
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IdString base_name;
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std::string liberty_filename;
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std::ofstream* liberty_file = new std::ofstream;
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bool apply_mode;
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for (argidx = 1; argidx < args.size(); argidx++) {
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if (args[argidx] == "-naming_attr" && argidx + 1 < args.size())
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naming_attr = RTLIL::escape_id(args[++argidx]);
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else if (args[argidx] == "-base" && argidx + 1 < args.size())
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base_name = RTLIL::escape_id(args[++argidx]);
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else if (args[argidx] == "-liberty" && argidx + 1 < args.size())
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liberty_filename = args[++argidx];
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else if (args[argidx] == "-apply")
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apply_mode = true;
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else
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@ -75,6 +133,14 @@ struct BoxDerivePass : Pass {
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}
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extra_args(args, argidx, d);
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if (liberty_filename.size()) {
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liberty_file->open(liberty_filename.c_str());
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if (liberty_file->fail()) {
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delete liberty_file;
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log_error("Can't open file `%s' for writing: %s\n", liberty_filename.c_str(), strerror(errno));
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}
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}
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Module *base_override = nullptr;
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if (!base_name.empty()) {
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base_override = d->module(base_name);
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@ -83,6 +149,10 @@ struct BoxDerivePass : Pass {
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}
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dict<std::pair<RTLIL::IdString, dict<RTLIL::IdString, RTLIL::Const>>, Module*> done;
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LibertyStubber stubber = {};
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if (liberty_file)
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stubber.liberty_prefix(*liberty_file);
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for (auto module : d->selected_modules()) {
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for (auto cell : module->selected_cells()) {
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@ -114,13 +184,22 @@ struct BoxDerivePass : Pass {
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d->rename(derived, new_name);
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}
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if (liberty_file)
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stubber.liberty_cell(base, derived, *liberty_file);
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done[index] = derived;
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}
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if (apply_mode)
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if (apply_mode) {
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cell->type = done[index]->name;
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cell->parameters.clear();
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}
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}
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}
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if (liberty_file) {
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stubber.liberty_suffix(*liberty_file);
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delete liberty_file;
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}
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}
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} BoxDerivePass;
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