sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

UefiCpuPkg/CpuMpPei: Implementation of PeiGetProcessorInfo ()

Browse Source 
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18007 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jeff Fan
2015-07-15 03:42:45 +00:00
committed by vanjeff
parent a2cc8caead
commit bf55f5b274
2 changed files with 225 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
UefiCpuPkg/CpuMpPei/PeiMpServices.h
View File

@@ -60,6 +60,41 @@ PeiGetNumberOfProcessors (
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] PeiServices An indirect pointer to the PEI Services Table
published by the PEI Foundation.
@param[in] This Pointer to this instance of the PPI.
@param[in] ProcessorNumber Pointer to the total number of logical processors in
the system, including the BSP and disabled APs.
@param[out] ProcessorInfoBuffer Number of processors in the system that are enabled.
@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
PeiGetProcessorInfo (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_MP_SERVICES_PPI *This,
IN UINTN ProcessorNumber,
OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
);
/**
This return the handle number for the calling processor. This service may be