/* cpu-config.c -- CPU configuration
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/* cpu-config.c -- CPU configuration
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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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/* Broken out from sim-config.c */
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/* Broken out from sim-config.c */
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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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/* System includes */
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/* System includes */
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#include <stdio.h>
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#include <stdio.h>
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/* Package includes */
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/* Package includes */
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#include "cpu-config.h"
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#include "cpu-config.h"
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#include "sim-config.h"
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#include "sim-config.h"
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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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#define WARNING(s) fprintf (stderr, "Warning: config.%s: %s\n", cur_section->name, (s))
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#define WARNING(s) fprintf (stderr, "Warning: config.cpu: %s\n", (s))
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!Set the CPU version
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/*!Set the CPU version
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Value must be an 8-bit integer. Larger values are truncated with a warning.
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Value must be an 8-bit integer. Larger values are truncated with a warning.
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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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cpu_ver (union param_val val,
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cpu_ver (union param_val val,
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void *dat)
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void *dat)
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{
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{
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if (val.int_val > 0xff)
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if (val.int_val > 0xff)
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{
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{
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WARNING ("CPU version > 8 bits truncated\n");
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WARNING ("CPU version > 8 bits truncated\n");
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}
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}
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cpu_state.sprs[SPR_VR] &= ~SPR_VR_VER;
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cpu_state.sprs[SPR_VR] &= ~SPR_VR_VER;
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cpu_state.sprs[SPR_VR] |= (val.int_val & 0xff) << SPR_VR_VER_OFF;
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cpu_state.sprs[SPR_VR] |= (val.int_val & 0xff) << SPR_VR_VER_OFF;
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} /* cpu_ver() */
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} /* cpu_ver() */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!Set the CPU configuration
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/*!Set the CPU configuration
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Value must be an 8-bit integer. Larger values are truncated with a warning.
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Value must be an 8-bit integer. Larger values are truncated with a warning.
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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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cpu_cfg (union param_val val,
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cpu_cfg (union param_val val,
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void *dat)
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void *dat)
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{
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{
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if (val.int_val > 0xff)
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if (val.int_val > 0xff)
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{
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{
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WARNING ("CPU configuration > 8 bits truncated\n");
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WARNING ("CPU configuration > 8 bits truncated\n");
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}
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}
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cpu_state.sprs[SPR_VR] &= ~SPR_VR_CFG;
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cpu_state.sprs[SPR_VR] &= ~SPR_VR_CFG;
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cpu_state.sprs[SPR_VR] |= (val.int_val & 0xff) << SPR_VR_CFG_OFF;
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cpu_state.sprs[SPR_VR] |= (val.int_val & 0xff) << SPR_VR_CFG_OFF;
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} /* cpu_cfg() */
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} /* cpu_cfg() */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!Set the CPU revision
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/*!Set the CPU revision
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Value must be an 6-bit integer. Larger values are truncated with a warning.
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Value must be an 6-bit integer. Larger values are truncated with a warning.
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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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cpu_rev (union param_val val,
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cpu_rev (union param_val val,
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void *dat)
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void *dat)
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{
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{
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if (val.int_val > 0x3f)
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if (val.int_val > 0x3f)
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{
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{
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WARNING ("CPU revision > 6 bits truncated\n");
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WARNING ("CPU revision > 6 bits truncated\n");
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}
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}
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cpu_state.sprs[SPR_VR] &= ~SPR_VR_REV_OFF ;
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cpu_state.sprs[SPR_VR] &= ~SPR_VR_REV_OFF ;
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cpu_state.sprs[SPR_VR] |= (val.int_val & 0x3f) << SPR_VR_REV_OFF ;
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cpu_state.sprs[SPR_VR] |= (val.int_val & 0x3f) << SPR_VR_REV_OFF ;
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} /* cpu_rev() */
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} /* cpu_rev() */
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static void
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static void
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cpu_upr (union param_val val, void *dat)
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cpu_upr (union param_val val, void *dat)
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{
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{
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cpu_state.sprs[SPR_UPR] = val.int_val;
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cpu_state.sprs[SPR_UPR] = val.int_val;
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}
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}
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!Set the CPU configuration
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/*!Set the CPU configuration
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Value must be just the OB32S instruction set bit. Nothing else is currently
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Value must be just the OB32S instruction set bit. Nothing else is currently
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supported. If other values are specified, they will be set, but with a
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supported. If other values are specified, they will be set, but with a
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warning.
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warning.
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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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cpu_cfgr (union param_val val,
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cpu_cfgr (union param_val val,
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void *dat)
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void *dat)
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{
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{
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if (SPR_CPUCFGR_OB32S != val.int_val)
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if (SPR_CPUCFGR_OB32S != val.int_val)
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{
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{
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WARNING ("CPU configuration: only OB32S currently supported\n");
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WARNING ("CPU configuration: only OB32S currently supported\n");
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}
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}
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cpu_state.sprs[SPR_CPUCFGR] = val.int_val;
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cpu_state.sprs[SPR_CPUCFGR] = val.int_val;
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} /* cpu_cfgr() */
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} /* cpu_cfgr() */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!Set the CPU supervision register
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/*!Set the CPU supervision register
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Only the lowest 17 bits may be set. The top 4 bits are for context ID's
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Only the lowest 17 bits may be set. The top 4 bits are for context ID's
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(not currently supported), the rest are reserved and should not be set.
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(not currently supported), the rest are reserved and should not be set.
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If such values are specified, the value will be set (it has no effect), but
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If such values are specified, the value will be set (it has no effect), but
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with a warning.
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with a warning.
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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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cpu_sr (union param_val val,
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cpu_sr (union param_val val,
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void *dat)
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void *dat)
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{
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{
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if (0 != (val.int_val & 0xf0000000))
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if (0 != (val.int_val & 0xf0000000))
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{
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{
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WARNING ("Supervision Register ContextID not supported: ignored\n");
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WARNING ("Supervision Register ContextID not supported: ignored\n");
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}
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}
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else if (val.int_val > 0x1ffff)
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else if (val.int_val > 0x1ffff)
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{
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{
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WARNING ("Supervision Register reserved bits set: ignored\n");
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WARNING ("Supervision Register reserved bits set: ignored\n");
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}
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}
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cpu_state.sprs[SPR_SR] = val.int_val;
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cpu_state.sprs[SPR_SR] = val.int_val;
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} /* cpu_sr() */
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} /* cpu_sr() */
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static void
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static void
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cpu_hazards (union param_val val, void *dat)
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cpu_hazards (union param_val val, void *dat)
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{
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{
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config.cpu.hazards = val.int_val;
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config.cpu.hazards = val.int_val;
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}
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}
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static void
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static void
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cpu_superscalar (union param_val val, void *dat)
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cpu_superscalar (union param_val val, void *dat)
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{
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{
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config.cpu.superscalar = val.int_val;
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config.cpu.superscalar = val.int_val;
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}
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}
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static void
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static void
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cpu_dependstats (union param_val val, void *dat)
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cpu_dependstats (union param_val val, void *dat)
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{
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{
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config.cpu.dependstats = val.int_val;
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config.cpu.dependstats = val.int_val;
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}
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}
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static void
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static void
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cpu_sbuf_len (union param_val val, void *dat)
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cpu_sbuf_len (union param_val val, void *dat)
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{
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{
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if (val.int_val >= MAX_SBUF_LEN)
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if (val.int_val >= MAX_SBUF_LEN)
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{
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{
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config.cpu.sbuf_len = MAX_SBUF_LEN - 1;
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config.cpu.sbuf_len = MAX_SBUF_LEN - 1;
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WARNING ("sbuf_len too large; truncated.");
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WARNING ("sbuf_len too large; truncated.");
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}
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}
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else if (val.int_val < 0)
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else if (val.int_val < 0)
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{
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{
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config.cpu.sbuf_len = 0;
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config.cpu.sbuf_len = 0;
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WARNING ("sbuf_len negative; disabled.");
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WARNING ("sbuf_len negative; disabled.");
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}
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}
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else
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else
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config.cpu.sbuf_len = val.int_val;
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config.cpu.sbuf_len = val.int_val;
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}
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}
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static void
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static void
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cpu_hardfloat (union param_val val, void *dat)
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cpu_hardfloat (union param_val val, void *dat)
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{
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{
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config.cpu.hardfloat = val.int_val;
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config.cpu.hardfloat = val.int_val;
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}
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}
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!Register the functions to handle a section cpu
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/*!Register the functions to handle a section cpu
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This section does not allocate dynamically a data structure holding its
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This section does not allocate dynamically a data structure holding its
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config information. It's all in the global config.sim data
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config information. It's all in the global config.sim data
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structure. Therefore it does not need a start and end function to
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structure. Therefore it does not need a start and end function to
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initialize default values (although it might be clearer to do so). The
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initialize default values (although it might be clearer to do so). The
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default values are set in init_defconfig(). */
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default values are set in init_defconfig(). */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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void
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void
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reg_cpu_sec ()
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reg_cpu_sec ()
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{
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{
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struct config_section *sec = reg_config_sec ("cpu", NULL, NULL);
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struct config_section *sec = reg_config_sec ("cpu", NULL, NULL);
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reg_config_param (sec, "ver", paramt_int, cpu_ver);
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reg_config_param (sec, "ver", PARAMT_INT, cpu_ver);
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reg_config_param (sec, "cfg", paramt_int, cpu_cfg);
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reg_config_param (sec, "cfg", PARAMT_INT, cpu_cfg);
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reg_config_param (sec, "rev", paramt_int, cpu_rev);
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reg_config_param (sec, "rev", PARAMT_INT, cpu_rev);
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reg_config_param (sec, "upr", paramt_int, cpu_upr);
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reg_config_param (sec, "upr", PARAMT_INT, cpu_upr);
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reg_config_param (sec, "cfgr", paramt_int, cpu_cfgr);
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reg_config_param (sec, "cfgr", PARAMT_INT, cpu_cfgr);
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reg_config_param (sec, "sr", paramt_int, cpu_sr);
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reg_config_param (sec, "sr", PARAMT_INT, cpu_sr);
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reg_config_param (sec, "superscalar", paramt_int, cpu_superscalar);
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reg_config_param (sec, "superscalar", PARAMT_INT, cpu_superscalar);
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reg_config_param (sec, "hazards", paramt_int, cpu_hazards);
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reg_config_param (sec, "hazards", PARAMT_INT, cpu_hazards);
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reg_config_param (sec, "dependstats", paramt_int, cpu_dependstats);
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reg_config_param (sec, "dependstats", PARAMT_INT, cpu_dependstats);
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reg_config_param (sec, "sbuf_len", paramt_int, cpu_sbuf_len);
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reg_config_param (sec, "sbuf_len", PARAMT_INT, cpu_sbuf_len);
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reg_config_param (sec, "hardfloat", paramt_int, cpu_hardfloat);
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reg_config_param (sec, "hardfloat", PARAMT_INT, cpu_hardfloat);
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} /* reg_cpu_sec() */
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} /* reg_cpu_sec() */
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