mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-10 14:23:31 +01:00
82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/** @file
|
|
C1E feature.
|
|
|
|
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include "CpuCommonFeatures.h"
|
|
|
|
/**
|
|
Detects if C1E feature supported on current processor.
|
|
|
|
@param[in] ProcessorNumber The index of the CPU executing this function.
|
|
@param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
|
|
structure for the CPU executing this function.
|
|
@param[in] ConfigData A pointer to the configuration buffer returned
|
|
by CPU_FEATURE_GET_CONFIG_DATA. NULL if
|
|
CPU_FEATURE_GET_CONFIG_DATA was not provided in
|
|
RegisterCpuFeature().
|
|
|
|
@retval TRUE C1E feature is supported.
|
|
@retval FALSE C1E feature is not supported.
|
|
|
|
@note This service could be called by BSP/APs.
|
|
**/
|
|
BOOLEAN
|
|
EFIAPI
|
|
C1eSupport (
|
|
IN UINTN ProcessorNumber,
|
|
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
|
|
IN VOID *ConfigData OPTIONAL
|
|
)
|
|
{
|
|
return IS_NEHALEM_PROCESSOR (CpuInfo->DisplayFamily, CpuInfo->DisplayModel);
|
|
}
|
|
|
|
/**
|
|
Initializes C1E feature to specific state.
|
|
|
|
@param[in] ProcessorNumber The index of the CPU executing this function.
|
|
@param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
|
|
structure for the CPU executing this function.
|
|
@param[in] ConfigData A pointer to the configuration buffer returned
|
|
by CPU_FEATURE_GET_CONFIG_DATA. NULL if
|
|
CPU_FEATURE_GET_CONFIG_DATA was not provided in
|
|
RegisterCpuFeature().
|
|
@param[in] State If TRUE, then the C1E feature must be enabled.
|
|
If FALSE, then the C1E feature must be disabled.
|
|
|
|
@retval RETURN_SUCCESS C1E feature is initialized.
|
|
|
|
@note This service could be called by BSP only.
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
C1eInitialize (
|
|
IN UINTN ProcessorNumber,
|
|
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
|
|
IN VOID *ConfigData, OPTIONAL
|
|
IN BOOLEAN State
|
|
)
|
|
{
|
|
//
|
|
// The scope of C1EEnable bit in the MSR_NEHALEM_POWER_CTL is Package, only program
|
|
// MSR_FEATURE_CONFIG for thread 0 core 0 in each package.
|
|
//
|
|
if ((CpuInfo->ProcessorInfo.Location.Thread != 0) || (CpuInfo->ProcessorInfo.Location.Core != 0)) {
|
|
return RETURN_SUCCESS;
|
|
}
|
|
|
|
CPU_REGISTER_TABLE_WRITE_FIELD (
|
|
ProcessorNumber,
|
|
Msr,
|
|
MSR_NEHALEM_POWER_CTL,
|
|
MSR_NEHALEM_POWER_CTL_REGISTER,
|
|
Bits.C1EEnable,
|
|
(State) ? 1 : 0
|
|
);
|
|
return RETURN_SUCCESS;
|
|
}
|