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UefiCpuPkg/CpuDxe: implement Mp Services:GetProcessorInfo() 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16356 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Chen Fan 2014-11-13 18:26:53 +00:00 committed by jljusten
parent d894d8b704
commit e7938b5a86
2 changed files with 85 additions and 1 deletions
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52
UefiCpuPkg/CpuDxe/CpuMp.c
View File

@ -26,7 +26,7 @@ VOID *mApStackStart = 0;
EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {
GetNumberOfProcessors,
NULL, // GetProcessorInfo,
GetProcessorInfo,
NULL, // StartupAllAPs,
NULL, // StartupThisAP,
NULL, // SwitchBSP,
@ -114,6 +114,56 @@ GetNumberOfProcessors (
return EFI_SUCCESS;
}
/**
Gets detailed MP-related information on the requested processor at the
instant this call is made. This service may only be called from the BSP.
This service retrieves detailed MP-related information about any processor
on the platform. Note the following:
- The processor information may change during the course of a boot session.
- The information presented here is entirely MP related.
Information regarding the number of caches and their sizes, frequency of operation,
slot numbers is all considered platform-related information and is not provided
by this service.
@param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL
instance.
@param[in] ProcessorNumber The handle number of processor.
@param[out] ProcessorInfoBuffer A pointer to the buffer where information for
the requested processor is deposited.
@retval EFI_SUCCESS Processor information was returned.
@retval EFI_DEVICE_ERROR The calling processor is an AP.
@retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.
@retval EFI_NOT_FOUND The processor with the handle specified by
ProcessorNumber does not exist in the platform.
**/
EFI_STATUS
EFIAPI
GetProcessorInfo (
IN EFI_MP_SERVICES_PROTOCOL *This,
IN UINTN ProcessorNumber,
OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
)
{
if (ProcessorInfoBuffer == NULL) {
return EFI_INVALID_PARAMETER;
}
if (!IsBSP ()) {
return EFI_DEVICE_ERROR;
}
if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {
return EFI_NOT_FOUND;
}
CopyMem (ProcessorInfoBuffer, &mMpSystemData.CpuDatas[ProcessorNumber], sizeof (EFI_PROCESSOR_INFORMATION));
return EFI_SUCCESS;
}
/**
This return the handle number for the calling processor. This service may be
called from the BSP and APs.

34
UefiCpuPkg/CpuDxe/CpuMp.h
View File

@ -168,6 +168,40 @@ GetNumberOfProcessors (
OUT UINTN *NumberOfEnabledProcessors
);
/**
Gets detailed MP-related information on the requested processor at the
instant this call is made. This service may only be called from the BSP.
This service retrieves detailed MP-related information about any processor
on the platform. Note the following:
- The processor information may change during the course of a boot session.
- The information presented here is entirely MP related.
Information regarding the number of caches and their sizes, frequency of operation,
slot numbers is all considered platform-related information and is not provided
by this service.
@param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL
instance.
@param[in] ProcessorNumber The handle number of processor.
@param[out] ProcessorInfoBuffer A pointer to the buffer where information for
the requested processor is deposited.
@retval EFI_SUCCESS Processor information was returned.
@retval EFI_DEVICE_ERROR The calling processor is an AP.
@retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.
@retval EFI_NOT_FOUND The processor with the handle specified by
ProcessorNumber does not exist in the platform.
**/
EFI_STATUS
EFIAPI
GetProcessorInfo (
IN EFI_MP_SERVICES_PROTOCOL *This,
IN UINTN ProcessorNumber,
OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
);
/**
This return the handle number for the calling processor. This service may be
called from the BSP and APs.