X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=UefiCpuPkg%2FLibrary%2FMpInitLib%2FPeiMpLib.c;h=ad43bd33f5f820c0c00192c33b22966ce678f5d7;hb=f32bfe6d061420a15bac6083063d227c567e6388;hp=5ce5788125c4ce5a603ba19ee5e3abb54ea1a299;hpb=9293d6e42e677e4a38e055258c0993ad8a9df14e;p=mirror_edk2.git

diff --git a/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c b/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
index 5ce5788125..ad43bd33f5 100644
--- a/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
@@ -13,18 +13,6 @@
 **/
 
 #include "MpLib.h"
-#include <Ppi/EndOfPeiPhase.h>
-#include <Library/PeiServicesLib.h>
-
-//
-// Global PEI notify function descriptor on EndofPei event
-//
-GLOBAL_REMOVE_IF_UNREFERENCED EFI_PEI_NOTIFY_DESCRIPTOR mMpInitLibNotifyList = {
-  (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
-  &gEfiEndOfPeiSignalPpiGuid,
-  CpuMpEndOfPeiCallback
-};
-
 
 /**
   Enable Debug Agent to support source debugging on AP function.
@@ -76,64 +64,6 @@ SaveCpuMpData (
     );
 }
 
-/**
-  Notify function on End Of PEI PPI.
-
-  On S3 boot, this function will restore wakeup buffer data.
-  On normal boot, this function will flag wakeup buffer to be un-used type.
-
-  @param[in]  PeiServices        The pointer to the PEI Services Table.
-  @param[in]  NotifyDescriptor   Address of the notification descriptor data structure.
-  @param[in]  Ppi                Address of the PPI that was installed.
-
-  @retval EFI_SUCCESS        When everything is OK.
-**/
-EFI_STATUS
-EFIAPI
-CpuMpEndOfPeiCallback (
-  IN EFI_PEI_SERVICES             **PeiServices,
-  IN EFI_PEI_NOTIFY_DESCRIPTOR    *NotifyDescriptor,
-  IN VOID                         *Ppi
-  )
-{
-  EFI_STATUS                Status;
-  EFI_BOOT_MODE             BootMode;
-  CPU_MP_DATA               *CpuMpData;
-  EFI_PEI_HOB_POINTERS      Hob;
-  EFI_HOB_MEMORY_ALLOCATION *MemoryHob;
-
-  DEBUG ((DEBUG_INFO, "PeiMpInitLib: CpuMpEndOfPeiCallback () invoked\n"));
-
-  Status = PeiServicesGetBootMode (&BootMode);
-  ASSERT_EFI_ERROR (Status);
-
-  CpuMpData = GetCpuMpData ();
-  if (BootMode != BOOT_ON_S3_RESUME) {
-    //
-    // Get the HOB list for processing
-    //
-    Hob.Raw = GetHobList ();
-    //
-    // Collect memory ranges
-    //
-    while (!END_OF_HOB_LIST (Hob)) {
-      if (Hob.Header->HobType == EFI_HOB_TYPE_MEMORY_ALLOCATION) {
-        MemoryHob = Hob.MemoryAllocation;
-        if (MemoryHob->AllocDescriptor.MemoryBaseAddress == CpuMpData->WakeupBuffer) {
-          //
-          // Flag this HOB type to un-used
-          //
-          GET_HOB_TYPE (Hob) = EFI_HOB_TYPE_UNUSED;
-          break;
-        }
-      }
-      Hob.Raw = GET_NEXT_HOB (Hob);
-    }
-  }
-
-  return EFI_SUCCESS;
-}
-
 /**
   Check if AP wakeup buffer is overlapped with existing allocated buffer.
 
@@ -244,14 +174,6 @@ GetWakeupBuffer (
           }
           DEBUG ((DEBUG_INFO, "WakeupBufferStart = %x, WakeupBufferSize = %x\n",
                                WakeupBufferStart, WakeupBufferSize));
-          //
-          // Create a memory allocation HOB.
-          //
-          BuildMemoryAllocationHob (
-            WakeupBufferStart,
-            WakeupBufferSize,
-            EfiBootServicesData
-            );
           return WakeupBufferStart;
         }
       }
@@ -266,39 +188,26 @@ GetWakeupBuffer (
 }
 
 /**
-  Allocate reset vector buffer.
+  Get available EfiBootServicesCode memory below 4GB by specified size.
 
-  @param[in, out]  CpuMpData  The pointer to CPU MP Data structure.
-**/
-VOID
-AllocateResetVector (
-  IN OUT CPU_MP_DATA          *CpuMpData
-  )
-{
-  UINTN           ApResetVectorSize;
-
-  if (CpuMpData->WakeupBuffer == (UINTN) -1) {
-    ApResetVectorSize = CpuMpData->AddressMap.RendezvousFunnelSize +
-                          sizeof (MP_CPU_EXCHANGE_INFO);
-
-    CpuMpData->WakeupBuffer      = GetWakeupBuffer (ApResetVectorSize);
-    CpuMpData->MpCpuExchangeInfo = (MP_CPU_EXCHANGE_INFO *) (UINTN)
-                    (CpuMpData->WakeupBuffer + CpuMpData->AddressMap.RendezvousFunnelSize);
-  }
-  BackupAndPrepareWakeupBuffer (CpuMpData);
-}
+  This buffer is required to safely transfer AP from real address mode to
+  protected mode or long mode, due to the fact that the buffer returned by
+  GetWakeupBuffer() may be marked as non-executable.
 
-/**
-  Free AP reset vector buffer.
+  @param[in] BufferSize   Wakeup transition buffer size.
 
-  @param[in]  CpuMpData  The pointer to CPU MP Data structure.
+  @retval other   Return wakeup transition buffer address below 4GB.
+  @retval 0       Cannot find free memory below 4GB.
 **/
-VOID
-FreeResetVector (
-  IN CPU_MP_DATA              *CpuMpData
+UINTN
+GetModeTransitionBuffer (
+  IN UINTN                BufferSize
   )
 {
-  RestoreWakeupBuffer (CpuMpData);
+  //
+  // PEI phase doesn't need to do such transition. So simply return 0.
+  //
+  return 0;
 }
 
 /**
@@ -322,22 +231,7 @@ InitMpGlobalData (
   IN CPU_MP_DATA               *CpuMpData
   )
 {
-  EFI_STATUS      Status;
-
   SaveCpuMpData (CpuMpData);
-
-  if (CpuMpData->CpuCount == 1) {
-    //
-    // If only BSP exists, return
-    //
-    return;
-  }
-
-  //
-  // Register an event for EndOfPei
-  //
-  Status  = PeiServicesNotifyPpi (&mMpInitLibNotifyList);
-  ASSERT_EFI_ERROR (Status);
 }
 
 /**