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UefiCpuPkg CpuCommonFeaturesLib: Enable Ppin feature. 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
This commit is contained in:
Eric Dong 2017-07-14 10:22:04 +08:00
parent f1a68ab2cc
commit ee1d736a0a
4 changed files with 181 additions and 0 deletions
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55
UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeatures.h
View File

@ -854,4 +854,59 @@ FeatureControlGetConfigData (
IN UINTN NumberOfProcessors
);
/**
Detects if Protected Processor Inventory Number 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 Enhanced Intel SpeedStep feature is supported.
@retval FALSE Enhanced Intel SpeedStep feature is not supported.
@note This service could be called by BSP/APs.
**/
BOOLEAN
EFIAPI
PpinSupport (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData OPTIONAL
);
/**
Initializes Protected Processor Inventory Number 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 Protected Processor Inventory
Number feature must be enabled.
If FALSE, then the Protected Processor Inventory
Number feature must be disabled.
@retval RETURN_SUCCESS Protected Processor Inventory Number feature is
initialized.
@retval RETURN_DEVICE_ERROR Device can't change state because it has been
locked.
**/
RETURN_STATUS
EFIAPI
PpinInitialize (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData, OPTIONAL
IN BOOLEAN State
);
#endif

11
UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.c
View File

@ -206,6 +206,17 @@ CpuCommonFeaturesLibConstructor (
);
ASSERT_EFI_ERROR (Status);
}
if (IsCpuFeatureSupported (CPU_FEATURE_PPIN)) {
Status = RegisterCpuFeature (
"PPIN",
NULL,
PpinSupport,
PpinInitialize,
CPU_FEATURE_PPIN,
CPU_FEATURE_END
);
ASSERT_EFI_ERROR (Status);
}
return RETURN_SUCCESS;
}

1
UefiCpuPkg/Library/CpuCommonFeaturesLib/CpuCommonFeaturesLib.inf
View File

@ -47,6 +47,7 @@
MonitorMwait.c
PendingBreak.c
X2Apic.c
Ppin.c
[Packages]
MdePkg/MdePkg.dec

114
UefiCpuPkg/Library/CpuCommonFeaturesLib/Ppin.c Normal file
View File

@ -0,0 +1,114 @@
/** @file
Protected Processor Inventory Number(PPIN) feature.
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "CpuCommonFeatures.h"
/**
Detects if Protected Processor Inventory Number 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 Enhanced Intel SpeedStep feature is supported.
@retval FALSE Enhanced Intel SpeedStep feature is not supported.
@note This service could be called by BSP/APs.
**/
BOOLEAN
EFIAPI
PpinSupport (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData OPTIONAL
)
{
MSR_IVY_BRIDGE_PLATFORM_INFO_1_REGISTER PlatformInfo;
if ((CpuInfo->DisplayFamily == 0x06) &&
((CpuInfo->DisplayModel == 0x3E) || // Xeon E5 V2
(CpuInfo->DisplayModel == 0x56) || // Xeon Processor D Product
(CpuInfo->DisplayModel == 0x4F) || // Xeon E5 v4, E7 v4
(CpuInfo->DisplayModel == 0x55) || // Xeon Processor Scalable
(CpuInfo->DisplayModel == 0x57) || // Xeon Phi processor 3200, 5200, 7200 series.
(CpuInfo->DisplayModel == 0x85) // Future Xeon phi processor
)) {
//
// Check whether platform support this feature.
//
PlatformInfo.Uint64 = AsmReadMsr64 (MSR_IVY_BRIDGE_PLATFORM_INFO_1);
return (PlatformInfo.Bits.PPIN_CAP != 0);
}
return FALSE;
}
/**
Initializes Protected Processor Inventory Number 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 Protected Processor Inventory
Number feature must be enabled.
If FALSE, then the Protected Processor Inventory
Number feature must be disabled.
@retval RETURN_SUCCESS Protected Processor Inventory Number feature is
initialized.
@retval RETURN_DEVICE_ERROR Device can't change state because it has been
locked.
**/
RETURN_STATUS
EFIAPI
PpinInitialize (
IN UINTN ProcessorNumber,
IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
IN VOID *ConfigData, OPTIONAL
IN BOOLEAN State
)
{
MSR_IVY_BRIDGE_PPIN_CTL_REGISTER MsrPpinCtrl;
//
// Check whether device already lock this register.
// If already locked, just base on the request state and
// the current state to return the status.
//
MsrPpinCtrl.Uint64 = AsmReadMsr64 (MSR_IVY_BRIDGE_PPIN_CTL);
if (MsrPpinCtrl.Bits.LockOut != 0) {
return MsrPpinCtrl.Bits.Enable_PPIN == State ? RETURN_SUCCESS : RETURN_DEVICE_ERROR;
}
CPU_REGISTER_TABLE_WRITE_FIELD (
ProcessorNumber,
Msr,
MSR_IVY_BRIDGE_PPIN_CTL,
MSR_IVY_BRIDGE_PPIN_CTL_REGISTER,
Bits.Enable_PPIN,
(State) ? 1 : 0
);
return RETURN_SUCCESS;
}