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UefiCpuPkg/MpInitLib: Save CPU MP Data pointer

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In PeiMpInitLib, save CPU MP Data pointer into one local Guided HOB.
In DxeMpInitLib, save CPU MP Data pointer into one global variable.

Add helper functions GetCpuMpData()/SaveCpuMpData().

v5:
  1. Move CPU_INIT_MP_LIB_HOB_GUID from MpLib.c to MpLib.h to make
     all C files visible.

Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Giri P Mudusuru <giri.p.mudusuru@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Michael Kinney <michael.d.kinney@intel.com>
This commit is contained in:
Jeff Fan
2016-07-21 16:08:12 +08:00
parent 94f63c765f
commit 93ca4c0fd7
4 changed files with 174 additions and 0 deletions
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48
UefiCpuPkg/Library/MpInitLib/MpLib.h
View File

@@ -35,6 +35,11 @@
#include <Library/MtrrLib.h>
#include <Library/HobLib.h>
#define CPU_INIT_MP_LIB_HOB_GUID \
{ \
0x58eb6a19, 0x3699, 0x4c68, { 0xa8, 0x36, 0xda, 0xcd, 0x8e, 0xdc, 0xad, 0x4a } \
}
//
// AP loop state when APs are in idle state
// It's value is the same with PcdCpuApLoopMode
@@ -198,6 +203,9 @@ struct _CPU_MP_DATA {
CPU_AP_DATA *CpuData;
volatile MP_CPU_EXCHANGE_INFO *MpCpuExchangeInfo;
};
extern EFI_GUID mCpuInitMpLibHobGuid;
/**
Assembly code to place AP into safe loop mode.
@@ -232,6 +240,46 @@ AsmGetAddressMap (
OUT MP_ASSEMBLY_ADDRESS_MAP *AddressMap
);
/**
Get the pointer to CPU MP Data structure.
@return The pointer to CPU MP Data structure.
**/
CPU_MP_DATA *
GetCpuMpData (
VOID
);
/**
Save the pointer to CPU MP Data structure.
@param[in] CpuMpData The pointer to CPU MP Data structure will be saved.
**/
VOID
SaveCpuMpData (
IN CPU_MP_DATA *CpuMpData
);
/**
Initialize global data for MP support.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData
);
/**
Get pointer to CPU MP Data structure from GUIDed HOB.
@return The pointer to CPU MP Data structure.
**/
CPU_MP_DATA *
GetCpuMpDataFromGuidedHob (
VOID
);
/**
Detect whether specified processor can find matching microcode patch and load it.