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UefiCpuPkg/MpInitLib: fix AP init issue in 64-bit PEI 

This issue is introduced by a patch at

   f32bfe6d06

The above patch miss the case of 64-bit PEI, which will link
X64/MpFuncs.nasm instead of Ia32/MpFuncs.nasm. For X64/MpFuncs.nasm,
ExchangeInfo->ModeHighMemory should be always initialized no matter
if separate wakeup buffer is allocated or not. Ia32/MpFuncs.nasm will
not need ModeHighMemory during AP init. So the changes made in this
patch should not affect the functionality of it.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
This commit is contained in:
Jian J Wang 2018-01-24 20:09:02 +08:00 committed by Ruiyu Ni
parent 06c1f423e1
commit 69dfa8d87a
1 changed files with 5 additions and 4 deletions
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9
UefiCpuPkg/Library/MpInitLib/MpLib.c
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@ -843,14 +843,15 @@ FillExchangeInfoData (
);
ExchangeInfo->ModeTransitionMemory = (UINT32)CpuMpData->WakeupBufferHigh;
ExchangeInfo->ModeHighMemory = (UINT32)CpuMpData->WakeupBufferHigh +
(UINT32)ExchangeInfo->ModeOffset -
(UINT32)CpuMpData->AddressMap.ModeTransitionOffset;
ExchangeInfo->ModeHighSegment = (UINT16)ExchangeInfo->CodeSegment;
} else {
ExchangeInfo->ModeTransitionMemory = (UINT32)
(ExchangeInfo->BufferStart + CpuMpData->AddressMap.ModeTransitionOffset);
}
ExchangeInfo->ModeHighMemory = ExchangeInfo->ModeTransitionMemory +
(UINT32)ExchangeInfo->ModeOffset -
(UINT32)CpuMpData->AddressMap.ModeTransitionOffset;
ExchangeInfo->ModeHighSegment = (UINT16)ExchangeInfo->CodeSegment;
}
/**