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/*
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.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.
*
*/
#include "kernel/register.h"
#include "kernel/log.h"
#include <stdlib.h>
#include <stdio.h>
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
struct MemoryPass : public Pass {
MemoryPass() : Pass("memory", "translate memories to basic cells") { }
void help() override
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" memory [-norom] [-nomap] [-nordff] [-nowiden] [-nosat] [-memx] [-no-rw-check] [-bram <bram_rules>] [selection]\n");
log("\n");
log("This pass calls all the other memory_* passes in a useful order:\n");
log("\n");
log(" opt_mem\n");
log(" opt_mem_priority\n");
log(" opt_mem_feedback\n");
log(" memory_bmux2rom (skipped if called with -norom)\n");
log(" memory_dff [-no-rw-check] (skipped if called with -nordff or -memx)\n");
log(" opt_clean\n");
log(" memory_share [-nowiden] [-nosat]\n");
log(" opt_mem_widen\n");
log(" memory_memx (when called with -memx)\n");
log(" opt_clean\n");
log(" memory_collect\n");
log(" memory_bram -rules <bram_rules> (when called with -bram)\n");
log(" memory_map (skipped if called with -nomap)\n");
log("\n");
log("This converts memories to word-wide DFFs and address decoders\n");
log("or multiport memory blocks if called with the -nomap option.\n");
log("\n");
}
void execute(std::vector<std::string> args, RTLIL::Design *design) override
{
bool flag_norom = false;
bool flag_nomap = false;
bool flag_nordff = false;
bool flag_memx = false;
string memory_dff_opts;
string memory_bram_opts;
string memory_share_opts;
log_header(design, "Executing MEMORY pass.\n");
log_push();
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++) {
if (args[argidx] == "-norom") {
flag_norom = true;
continue;
}
if (args[argidx] == "-nomap") {
flag_nomap = true;
continue;
}
if (args[argidx] == "-nordff") {
flag_nordff = true;
continue;
}
if (args[argidx] == "-memx") {
flag_nordff = true;
flag_memx = true;
continue;
}
if (args[argidx] == "-nowiden") {
memory_share_opts += " -nowiden";
continue;
}
if (args[argidx] == "-nosat") {
memory_share_opts += " -nosat";
continue;
}
if (args[argidx] == "-no-rw-check") {
memory_dff_opts += " -no-rw-check";
continue;
}
if (argidx+1 < args.size() && args[argidx] == "-bram") {
memory_bram_opts += " -rules " + args[++argidx];
continue;
}
break;
}
extra_args(args, argidx, design);
Pass::call(design, "opt_mem");
Pass::call(design, "opt_mem_priority");
Pass::call(design, "opt_mem_feedback");
if (!flag_norom)
Pass::call(design, "memory_bmux2rom");
if (!flag_nordff)
Pass::call(design, "memory_dff" + memory_dff_opts);
Pass::call(design, "opt_clean");
Pass::call(design, "memory_share" + memory_share_opts);
Pass::call(design, "opt_mem_widen");
if (flag_memx)
Pass::call(design, "memory_memx");
Pass::call(design, "opt_clean");
Pass::call(design, "memory_collect");
if (!memory_bram_opts.empty())
Pass::call(design, "memory_bram" + memory_bram_opts);
if (!flag_nomap)
Pass::call(design, "memory_map");
log_pop();
}
} MemoryPass;
PRIVATE_NAMESPACE_END
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