Subversion Repositories openrisc_2011-10-31

// ----------------------------------------------------------------------------

// SystemC reset signal generator header

// Copyright (C) 2008  Embecosm Limited <info@embecosm.com>

// Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>

// This file is part of the cycle accurate model of the OpenRISC 1000 based

// system-on-chip, ORPSoC, built using Verilator.

// This program is free software: you can redistribute it and/or modify it

// under the terms of the GNU Lesser General Public License as published by

// the Free Software Foundation, either version 3 of the License, or (at your

// option) any later version.

// This program is distributed in the hope that it will be useful, but WITHOUT

// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public

// License for more details.

// You should have received a copy of the GNU Lesser General Public License

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

// ----------------------------------------------------------------------------

// $Id: ResetSC.h 286 2009-02-03 11:19:30Z jeremy $

#ifndef RESET_SC__H

#define RESET_SC__H

#include "systemc"

//! Provide a SystemC reset signal at startup

//! The reset signal is driven for a specified number of cycles after

//! creation. For convenience synchronous versions of the reset signal are

//! provided in both active high and active low formats.

class ResetSC

  : public sc_core::sc_module

{

public:

  // Constructor

  ResetSC (sc_core::sc_module_name  name,

           int                      _resetCounter = 5);

  // Method to drive the reset

  void  driveReset();

  // The ports

  sc_core::sc_in<bool>   clk;

  sc_core::sc_out<bool>  rst;           // Active high reset

  sc_core::sc_out<bool>  rstn;          // Active low reset

private:

  int  resetCounter;

};      // ResetSC ()

#endif  // RESET_SC__H