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/* pm.c -- Simulation of OpenRISC 1000 power management

   Copyright (C) 1999 Damjan Lampret, lampret@opencores.org

   Copyright (C) 2008 Embecosm Limited

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

   This file is part of OpenRISC 1000 Architectural Simulator.

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

   under the terms of the GNU 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 General Public License for

   more details.

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

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

/* This program is commented throughout in a fashion suitable for processing

   with Doxygen. */

/* Autoconf and/or portability configuration */

#include "config.h"

/* Package includes */

#include "spr-defs.h"

#include "execute.h"

#include "sim-config.h"

/*---------------------------------------------------------------------------*/

/*!Reset power management

   Initializes PMR register by clearing it.                                  */

/*---------------------------------------------------------------------------*/

void

pm_reset ()

{

  if (config.sim.verbose)

    {

      PRINTF ("Resetting Power Management.\n");

    }

  cpu_state.sprs[SPR_PMR] = 0;

}                               /* pm_reset() */

/*---------------------------------------------------------------------------*/

/*!Enable or disable power management

   Set the corresponding field in the UPR

   @param[in] val  The value to use

   @param[in] dat  The config data structure (not used here)                 */

/*---------------------------------------------------------------------------*/

static void

pm_enabled (union param_val val, void *dat)

{

  if (val.int_val)

    {

      cpu_state.sprs[SPR_UPR] |= SPR_UPR_PMP;

    }

  else

    {

      cpu_state.sprs[SPR_UPR] &= ~SPR_UPR_PMP;

    }

  config.pm.enabled = val.int_val;

}                               /* pm_enabled() */

/*---------------------------------------------------------------------------*/

/*!Set up a new power management configuration section                       */

/*---------------------------------------------------------------------------*/

void

reg_pm_sec ()

{

  struct config_section *sec = reg_config_sec ("pm", NULL, NULL);

  reg_config_param (sec, "enabled", paramt_int, pm_enabled);

}                               /* reg_pm_sec() */