73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
/*
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* yosys -- Yosys Open SYnthesis Suite
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*
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* Copyright (C) 2018 Icenowy Zheng <icenowy@aosc.io>
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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/yosys.h"
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#include "kernel/sigtools.h"
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USING_YOSYS_NAMESPACE
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PRIVATE_NAMESPACE_BEGIN
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struct DetermineInitPass : public Pass {
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DetermineInitPass() : Pass("determine_init", "Determine the init value of cells") { }
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void help() YS_OVERRIDE
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{
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log("\n");
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log(" determine_init [selection]\n");
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log("\n");
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log("Determine the init value of cells that doesn't allow unknown init value.\n");
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log("\n");
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}
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Const determine_init(Const init)
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{
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for (int i = 0; i < GetSize(init); i++) {
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if (init[i] != State::S0 && init[i] != State::S1)
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init[i] = State::S0;
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}
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return init;
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}
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void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
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{
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log_header(design, "Executing DETERMINE_INIT pass (determine init value for cells).\n");
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extra_args(args, args.size(), design);
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int cnt = 0;
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for (auto module : design->selected_modules())
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{
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for (auto cell : module->selected_cells())
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{
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if (cell->type == "\\RAM16S4")
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{
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cell->setParam("\\INIT_0", determine_init(cell->getParam("\\INIT_0")));
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cell->setParam("\\INIT_1", determine_init(cell->getParam("\\INIT_1")));
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cell->setParam("\\INIT_2", determine_init(cell->getParam("\\INIT_2")));
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cell->setParam("\\INIT_3", determine_init(cell->getParam("\\INIT_3")));
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cnt++;
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}
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}
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}
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log_header(design, "Updated %d cells with determined init value.\n", cnt);
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}
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} DetermineInitPass;
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PRIVATE_NAMESPACE_END
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