From 8805c9123156793ee8c48083428bf1c432d0bdcf Mon Sep 17 00:00:00 2001 From: Jeff Fan Date: Wed, 15 Jul 2015 03:41:07 +0000 Subject: UefiCpuPkg/CpuMpPei: Build one GUIDed HOB to save CPU MP Data Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan Reviewed-by: Feng Tian Reviewed-by: Jiewen Yao git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18003 6f19259b-4bc3-4df7-8a09-765794883524 --- UefiCpuPkg/CpuMpPei/CpuMpPei.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'UefiCpuPkg') diff --git a/UefiCpuPkg/CpuMpPei/CpuMpPei.c b/UefiCpuPkg/CpuMpPei/CpuMpPei.c index d63b1ff231..ae98c38639 100644 --- a/UefiCpuPkg/CpuMpPei/CpuMpPei.c +++ b/UefiCpuPkg/CpuMpPei/CpuMpPei.c @@ -94,6 +94,31 @@ SortApicId ( } } } + +/** + Get CPU MP Data pointer from the Guided HOB. + + @return Pointer to Pointer to PEI CPU MP Data +**/ +PEI_CPU_MP_DATA * +GetMpHobData ( + VOID + ) +{ + EFI_HOB_GUID_TYPE *GuidHob; + VOID *DataInHob; + PEI_CPU_MP_DATA *CpuMpData; + + CpuMpData = NULL; + GuidHob = GetFirstGuidHob (&gEfiCallerIdGuid); + if (GuidHob != NULL) { + DataInHob = GET_GUID_HOB_DATA (GuidHob); + CpuMpData = (PEI_CPU_MP_DATA *)(*(UINTN *)DataInHob); + } + ASSERT (CpuMpData != NULL); + return CpuMpData; +} + /** This function will be called from AP reset code if BSP uses WakeUpAP. @@ -413,6 +438,14 @@ CpuMpPeimInit ( // Count processor number and collect processor information // ProcessorCount = CountProcessorNumber (PeiCpuMpData); + // + // Build location of PEI CPU MP DATA buffer in HOB + // + BuildGuidDataHob ( + &gEfiCallerIdGuid, + (VOID *)&PeiCpuMpData, + sizeof(UINT64) + ); return EFI_SUCCESS; } -- cgit v1.2.3