coreboot/src/include/cpu/intel/speedstep.h

42 lines
1.3 KiB
C

/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007-2009 coresystems GmbH
*
* 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; version 2 of
* the License.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
/* Magic value used to locate speedstep configuration in the device tree */
#define SPEEDSTEP_APIC_MAGIC 0xACAC
/* MWAIT coordination I/O base address. This must match
* the \_PR_.CPU0 PM base address.
*/
#define PMB0_BASE 0x510
/* PMB1: I/O port that triggers SMI once cores are in the same state.
* See CSM Trigger, at PMG_CST_CONFIG_CONTROL[6:4]
*/
#define PMB1_BASE 0x800
/* Speedstep related MSRs */
#define IA32_PLATFORM_ID 0x017
#define IA32_PERF_STS 0x198
#define IA32_PERF_CTL 0x199
#define MSR_THERM2_CTL 0x19D
#define IA32_MISC_ENABLES 0x1A0