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(). Cc: Michael Kinney <michael.d.kin...@intel.com> Cc: Feng Tian <feng.t...@intel.com> Cc: Giri P Mudusuru <giri.p.mudus...@intel.com> Cc: Laszlo Ersek <ler...@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan <jeff....@intel.com> --- UefiCpuPkg/Library/MpInitLib/DxeMpLib.c | 42 +++++++++++++++++++++++++ UefiCpuPkg/Library/MpInitLib/MpLib.c | 35 +++++++++++++++++++++ UefiCpuPkg/Library/MpInitLib/MpLib.h | 43 ++++++++++++++++++++++++++ UefiCpuPkg/Library/MpInitLib/PeiMpLib.c | 54 +++++++++++++++++++++++++++++++++ 4 files changed, 174 insertions(+) diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c index 60563c5..3c6c78b 100644 --- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c @@ -13,6 +13,48 @@ **/ #include "MpLib.h" +CPU_MP_DATA *mCpuMpData = NULL; + +/** + Get the pointer to CPU MP Data structure. + + @return The pointer to CPU MP Data structure. +**/ +CPU_MP_DATA * +GetCpuMpData ( + VOID + ) +{ + ASSERT (mCpuMpData != NULL); + return mCpuMpData; +} + +/** + 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 + ) +{ + mCpuMpData = CpuMpData; +} + +/** + Initialize global data for MP support. + + @param[in] CpuMpData The pointer to CPU MP Data structure. +**/ +VOID +InitMpGlobalData ( + IN CPU_MP_DATA *CpuMpData + ) +{ + SaveCpuMpData (CpuMpData); + +} /** This service executes a caller provided function on all enabled APs. diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c index 5f242a4..338f2e1 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c @@ -14,6 +14,13 @@ #include "MpLib.h" +#define CPU_INIT_MP_LIB_HOB_GUID \ + { \ + 0x58eb6a19, 0x3699, 0x4c68, { 0xa8, 0x36, 0xda, 0xcd, 0x8e, 0xdc, 0xad, 0x4a } \ + } + +EFI_GUID mCpuInitMpLibHobGuid = CPU_INIT_MP_LIB_HOB_GUID; + /** Get the Application Processors state. @@ -303,6 +310,12 @@ MpInitLibInitialize ( // MtrrGetAllMtrrs (&CpuMpData->MtrrTable); + + // + // Initialize global data for MP support + // + InitMpGlobalData (CpuMpData); + return EFI_SUCCESS; } @@ -386,3 +399,25 @@ MpInitLibGetNumberOfProcessors ( { return EFI_SUCCESS; } +/** + Get pointer to CPU MP Data structure from GUIDed HOB. + + @return The pointer to CPU MP Data structure. +**/ +CPU_MP_DATA * +GetCpuMpDataFromGuidedHob ( + VOID + ) +{ + EFI_HOB_GUID_TYPE *GuidHob; + VOID *DataInHob; + CPU_MP_DATA *CpuMpData; + + CpuMpData = NULL; + GuidHob = GetFirstGuidHob (&mCpuInitMpLibHobGuid); + if (GuidHob != NULL) { + DataInHob = GET_GUID_HOB_DATA (GuidHob); + CpuMpData = (CPU_MP_DATA *) (*(UINTN *) DataInHob); + } + return CpuMpData; +} diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.h b/UefiCpuPkg/Library/MpInitLib/MpLib.h index 37e8a01..cf608cb 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.h +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.h @@ -178,6 +178,9 @@ 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. @@ -213,6 +216,46 @@ AsmGetAddressMap ( ); /** + 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. @param[in] PeiCpuMpData Pointer to PEI CPU MP Data diff --git a/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c b/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c index 65214ed..4bb7ed1 100644 --- a/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c @@ -15,6 +15,60 @@ #include "MpLib.h" /** + Get pointer to CPU MP Data structure. + + @return The pointer to CPU MP Data structure. +**/ +CPU_MP_DATA * +GetCpuMpData ( + VOID + ) +{ + CPU_MP_DATA *CpuMpData; + + CpuMpData = GetCpuMpDataFromGuidedHob (); + ASSERT (CpuMpData != NULL); + return CpuMpData; +} + +/** + 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 + ) +{ + UINT64 Data64; + // + // Build location of CPU MP DATA buffer in HOB + // + Data64 = (UINT64) (UINTN) CpuMpData; + BuildGuidDataHob ( + &mCpuInitMpLibHobGuid, + (VOID *) &Data64, + sizeof (UINT64) + ); +} + + +/** + Initialize global data for MP support. + + @param[in] CpuMpData The pointer to CPU MP Data structure. +**/ +VOID +InitMpGlobalData ( + IN CPU_MP_DATA *CpuMpData + ) +{ + + SaveCpuMpData (CpuMpData); +} + +/** This service executes a caller provided function on all enabled APs. @param[in] Procedure A pointer to the function to be run on -- 2.7.4.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel