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UefiCpuPkg/MpInitLib: Fix S3 resume hang issue.

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When resume from S3 and CPU loop mode is MWait mode,
if driver calls APs to do task at EndOfPei point, the
APs can't been wake up and bios hang at that point.

The root cause is PiSmmCpuDxeSmm driver wakes up APs
with HLT mode during S3 resume phase to do SMM relocation.
After this task, PiSmmCpuDxeSmm driver not restore APs
context which make CpuMpPei driver saved wake up buffer
not works.

The solution for this issue is let CpuMpPei driver hook
S3SmmInitDone ppi notification. In this notify function,
it check whether Cpu Loop mode is not HLT mode. If yes,
CpuMpPei driver will set a flag to force BSP use INIT-SIPI
-SIPI command to wake up the APs.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
This commit is contained in:
Eric Dong
2018-06-27 16:42:51 +08:00
parent f63a3e2867
commit 58942277bc
4 changed files with 116 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

89
UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
View File

@@ -13,6 +13,87 @@
**/
#include "MpLib.h"
#include <Library/PeiServicesLib.h>
#include <Guid/S3SmmInitDone.h>
/**
S3 SMM Init Done notification function.
@param PeiServices Indirect reference to the PEI Services Table.
@param NotifyDesc Address of the notification descriptor data structure.
@param InvokePpi Address of the PPI that was invoked.
@retval EFI_SUCCESS The function completes successfully.
**/
EFI_STATUS
EFIAPI
NotifyOnS3SmmInitDonePpi (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDesc,
IN VOID *InvokePpi
);
//
// Global function
//
EFI_PEI_NOTIFY_DESCRIPTOR mS3SmmInitDoneNotifyDesc = {
EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
&gEdkiiS3SmmInitDoneGuid,
NotifyOnS3SmmInitDonePpi
};
/**
The function prototype for invoking a function on an Application Processor.
This definition is used by the UEFI MP Serices Protocol, and the
PI SMM System Table.
@param[in,out] Buffer The pointer to private data buffer.
**/
VOID
EmptyApProcedure (
IN OUT VOID * Buffer
)
{
}
/**
S3 SMM Init Done notification function.
@param PeiServices Indirect reference to the PEI Services Table.
@param NotifyDesc Address of the notification descriptor data structure.
@param InvokePpi Address of the PPI that was invoked.
@retval EFI_SUCCESS The function completes successfully.
**/
EFI_STATUS
EFIAPI
NotifyOnS3SmmInitDonePpi (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDesc,
IN VOID *InvokePpi
)
{
CPU_MP_DATA *CpuMpData;
CpuMpData = GetCpuMpData ();
//
// PiSmmCpuDxeSmm driver hardcode change the loop mode to HLT mode.
// So in this notify function, code need to check the current loop
// mode, if it is not HLT mode, code need to change loop mode back
// to the original mode.
//
if (CpuMpData->ApLoopMode != ApInHltLoop) {
CpuMpData->WakeUpByInitSipiSipi = TRUE;
}
return EFI_SUCCESS;
}
/**
Enable Debug Agent to support source debugging on AP function.
@@ -240,7 +321,15 @@ InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData
)
{
EFI_STATUS Status;
SaveCpuMpData (CpuMpData);
///
/// Install Notify
///
Status = PeiServicesNotifyPpi (&mS3SmmInitDoneNotifyDesc);
ASSERT_EFI_ERROR (Status);
}
/**