/* pm.c -- Simulation of OpenRISC 1000 power management
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/* pm.c -- Simulation of OpenRISC 1000 power management
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Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
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Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
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Copyright (C) 2008 Embecosm Limited
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Copyright (C) 2008 Embecosm Limited
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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This file is part of OpenRISC 1000 Architectural Simulator.
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This file is part of OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify it
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your option)
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Software Foundation; either version 3 of the License, or (at your option)
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any later version.
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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more details.
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You should have received a copy of the GNU General Public License along
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You should have received a copy of the GNU General Public License along
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with this program. If not, see <http://www.gnu.org/licenses/>. */
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with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This program is commented throughout in a fashion suitable for processing
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/* This program is commented throughout in a fashion suitable for processing
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with Doxygen. */
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with Doxygen. */
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/* Autoconf and/or portability configuration */
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/* Autoconf and/or portability configuration */
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#include "config.h"
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#include "config.h"
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/* Package includes */
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/* Package includes */
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#include "spr-defs.h"
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#include "spr-defs.h"
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#include "execute.h"
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#include "execute.h"
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#include "sim-config.h"
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#include "sim-config.h"
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!Reset power management
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/*!Reset power management
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Initializes PMR register by clearing it. */
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Initializes PMR register by clearing it. */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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void
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void
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pm_reset ()
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pm_reset ()
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{
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{
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if (config.sim.verbose)
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if (config.sim.verbose)
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{
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{
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PRINTF ("Resetting Power Management.\n");
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PRINTF ("Resetting Power Management.\n");
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}
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}
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cpu_state.sprs[SPR_PMR] = 0;
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cpu_state.sprs[SPR_PMR] = 0;
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} /* pm_reset() */
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} /* pm_reset() */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!Enable or disable power management
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/*!Enable or disable power management
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Set the corresponding field in the UPR
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Set the corresponding field in the UPR
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@param[in] val The value to use
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@param[in] val The value to use
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@param[in] dat The config data structure (not used here) */
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@param[in] dat The config data structure (not used here) */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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static void
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static void
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pm_enabled (union param_val val, void *dat)
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pm_enabled (union param_val val, void *dat)
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{
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{
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if (val.int_val)
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if (val.int_val)
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{
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{
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cpu_state.sprs[SPR_UPR] |= SPR_UPR_PMP;
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cpu_state.sprs[SPR_UPR] |= SPR_UPR_PMP;
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}
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}
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else
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else
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{
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{
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cpu_state.sprs[SPR_UPR] &= ~SPR_UPR_PMP;
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cpu_state.sprs[SPR_UPR] &= ~SPR_UPR_PMP;
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}
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}
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config.pm.enabled = val.int_val;
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config.pm.enabled = val.int_val;
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} /* pm_enabled() */
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} /* pm_enabled() */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!Set up a new power management configuration section */
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/*!Set up a new power management configuration section */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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void
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void
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reg_pm_sec ()
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reg_pm_sec ()
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{
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{
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struct config_section *sec = reg_config_sec ("pm", NULL, NULL);
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struct config_section *sec = reg_config_sec ("pm", NULL, NULL);
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reg_config_param (sec, "enabled", PARAMT_INT, pm_enabled);
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reg_config_param (sec, "enabled", PARAMT_INT, pm_enabled);
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} /* reg_pm_sec() */
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} /* reg_pm_sec() */
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