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