103 lines
3.2 KiB
C++
103 lines
3.2 KiB
C++
/*
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* yosys -- Yosys Open SYnthesis Suite
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*
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* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
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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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#include "kernel/register.h"
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#include "kernel/log.h"
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#include <stdlib.h>
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#include <stdio.h>
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USING_YOSYS_NAMESPACE
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PRIVATE_NAMESPACE_BEGIN
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struct MemoryPass : public Pass {
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MemoryPass() : Pass("memory", "translate memories to basic cells") { }
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virtual void help()
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{
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// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
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log("\n");
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log(" memory [-nomap] [-nordff] [-memx] [-bram <bram_rules>] [selection]\n");
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log("\n");
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log("This pass calls all the other memory_* passes in a useful order:\n");
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log("\n");
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log(" memory_dff [-nordff] (-memx implies -nordff)\n");
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log(" opt_clean\n");
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log(" memory_share\n");
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log(" opt_clean\n");
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log(" memory_memx (when called with -memx)\n");
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log(" memory_collect\n");
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log(" memory_bram -rules <bram_rules> (when called with -bram)\n");
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log(" memory_map (skipped if called with -nomap)\n");
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log("\n");
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log("This converts memories to word-wide DFFs and address decoders\n");
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log("or multiport memory blocks if called with the -nomap option.\n");
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log("\n");
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}
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virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
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{
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bool flag_nomap = false;
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bool flag_nordff = false;
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bool flag_memx = false;
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string memory_bram_opts;
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log_header(design, "Executing MEMORY pass.\n");
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log_push();
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size_t argidx;
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for (argidx = 1; argidx < args.size(); argidx++) {
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if (args[argidx] == "-nomap") {
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flag_nomap = true;
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continue;
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}
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if (args[argidx] == "-nordff") {
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flag_nordff = true;
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continue;
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}
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if (args[argidx] == "-memx") {
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flag_nordff = true;
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flag_memx = true;
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continue;
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}
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if (argidx+1 < args.size() && args[argidx] == "-bram") {
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memory_bram_opts += " -rules " + args[++argidx];
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continue;
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}
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break;
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}
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extra_args(args, argidx, design);
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Pass::call(design, flag_nordff ? "memory_dff -nordff" : "memory_dff");
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Pass::call(design, "opt_clean");
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Pass::call(design, "memory_share");
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if (flag_memx)
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Pass::call(design, "memory_memx");
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Pass::call(design, "opt_clean");
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Pass::call(design, "memory_collect");
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if (!memory_bram_opts.empty())
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Pass::call(design, "memory_bram" + memory_bram_opts);
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if (!flag_nomap)
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Pass::call(design, "memory_map");
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log_pop();
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}
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} MemoryPass;
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PRIVATE_NAMESPACE_END
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