6277077d88
This provides support to update energy performance preference value. BUG=b:219785001 BRANCH=firmware-brya-14505.B Signed-off-by: Cliff Huang <cliff.huang@intel.corp-partner.google.com> Change-Id: I381bca6c7746a4ae7ca32aa1b4992a6d53c8eaaa Reviewed-on: https://review.coreboot.org/c/coreboot/+/62653 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
|
|
#ifndef _CPU_INTEL_COMMON_H
|
|
#define _CPU_INTEL_COMMON_H
|
|
|
|
#include <types.h>
|
|
#include <acpi/acpigen.h>
|
|
|
|
void set_vmx_and_lock(void);
|
|
void set_feature_ctrl_vmx(void);
|
|
void set_feature_ctrl_vmx_arg(bool enable);
|
|
void set_feature_ctrl_lock(void);
|
|
|
|
/*
|
|
* Init CPPC block with MSRs for Intel Enhanced Speed Step Technology.
|
|
* Version 2 is suggested--this function's implementation of version 3
|
|
* may have room for improvement.
|
|
*/
|
|
struct cppc_config;
|
|
void cpu_init_cppc_config(struct cppc_config *config, u32 version);
|
|
|
|
/*
|
|
* Returns true if CPU supports Hyper-Threading.
|
|
*/
|
|
bool intel_ht_supported(void);
|
|
|
|
/*
|
|
* Returns true if it's not thread 0 on a hyperthreading enabled core.
|
|
*/
|
|
bool intel_ht_sibling(void);
|
|
|
|
/*
|
|
* Lock AES-NI feature (MSR_FEATURE_CONFIG) to prevent unintended changes
|
|
* to the enablement state as suggested in Intel document 325384-070US.
|
|
*/
|
|
void set_aesni_lock(void);
|
|
|
|
/* Enable local CPU APIC TPR (Task Priority Register) updates */
|
|
void enable_lapic_tpr(void);
|
|
|
|
/* Enable DCA (Direct Cache Access) */
|
|
void configure_dca_cap(void);
|
|
|
|
/*
|
|
* Set EPB (Energy Performance Bias)
|
|
* Possible values are 0 (performance) to 15 (powersave).
|
|
*/
|
|
void set_energy_perf_bias(u8 policy);
|
|
|
|
/*
|
|
* Check energy performance preference and HWP capabilities from Thermal and
|
|
* Power Management Leaf CPUID.
|
|
*/
|
|
bool check_energy_perf_cap(void);
|
|
|
|
/*
|
|
* Set the IA32_HWP_REQUEST Energy-Performance Preference bits on the logical
|
|
* thread. 0 is a hint to the HWP to prefer performance, and 255 is a hint to
|
|
* prefer energy efficiency.
|
|
*/
|
|
void set_energy_perf_pref(u8 pref);
|
|
|
|
/*
|
|
* Instructs the CPU to use EPP hints. This means that any energy policies set
|
|
* up in `set_energy_perf_bias` will be ignored afterwards.
|
|
*/
|
|
void enable_energy_perf_pref(void);
|
|
|
|
#endif
|