UefiCpuPkg/MpInitLib: Make sure AP uses correct StartupApSignal

[mirror_edk2.git] / UefiCpuPkg / Library / MpInitLib / MpLib.c

diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index 1a6cdb678e494a3bd6d466a1a0c634f3491193b3..742f0c1f5e7b5b7b89e000e3c2695ae5ccbcf096 100644 (file)
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -330,6 +330,7 @@ SortApicId (
   CPU_INFO_IN_HOB   CpuInfo;\r
   UINT32            ApCount;\r
   CPU_INFO_IN_HOB   *CpuInfoInHob;\r
+  volatile UINT32   *StartupApSignal;\r
 \r
   ApCount = CpuMpData->CpuCount - 1;\r
   CpuInfoInHob = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;\r
@@ -354,6 +355,14 @@ SortApicId (
           sizeof (CPU_INFO_IN_HOB)\r
           );\r
         CopyMem (&CpuInfoInHob[Index1], &CpuInfo, sizeof (CPU_INFO_IN_HOB));\r
+\r
+        //\r
+        // Also exchange the StartupApSignal.\r
+        //\r
+        StartupApSignal = CpuMpData->CpuData[Index3].StartupApSignal;\r
+        CpuMpData->CpuData[Index3].StartupApSignal =\r
+          CpuMpData->CpuData[Index1].StartupApSignal;\r
+        CpuMpData->CpuData[Index1].StartupApSignal = StartupApSignal;\r
       }\r
     }\r
 \r
@@ -772,6 +781,8 @@ FillExchangeInfoData (
   )\r
 {\r
   volatile MP_CPU_EXCHANGE_INFO    *ExchangeInfo;\r
+  UINTN                            Size;\r
+  IA32_SEGMENT_DESCRIPTOR          *Selector;\r
 \r
   ExchangeInfo                  = CpuMpData->MpCpuExchangeInfo;\r
   ExchangeInfo->Lock            = 0;\r
@@ -801,6 +812,45 @@ FillExchangeInfoData (
   //\r
   AsmReadGdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->GdtrProfile);\r
   AsmReadIdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->IdtrProfile);\r
+\r
+  //\r
+  // Find a 32-bit code segment\r
+  //\r
+  Selector = (IA32_SEGMENT_DESCRIPTOR *)ExchangeInfo->GdtrProfile.Base;\r
+  Size = ExchangeInfo->GdtrProfile.Limit + 1;\r
+  while (Size > 0) {\r
+    if (Selector->Bits.L == 0 && Selector->Bits.Type >= 8) {\r
+      ExchangeInfo->ModeTransitionSegment =\r
+        (UINT16)((UINTN)Selector - ExchangeInfo->GdtrProfile.Base);\r
+      break;\r
+    }\r
+    Selector += 1;\r
+    Size -= sizeof (IA32_SEGMENT_DESCRIPTOR);\r
+  }\r
+\r
+  //\r
+  // Copy all 32-bit code and 64-bit code into memory with type of\r
+  // EfiBootServicesCode to avoid page fault if NX memory protection is enabled.\r
+  //\r
+  if (CpuMpData->WakeupBufferHigh != 0) {\r
+    Size = CpuMpData->AddressMap.RendezvousFunnelSize -\r
+           CpuMpData->AddressMap.ModeTransitionOffset;\r
+    CopyMem (\r
+      (VOID *)CpuMpData->WakeupBufferHigh,\r
+      CpuMpData->AddressMap.RendezvousFunnelAddress +\r
+      CpuMpData->AddressMap.ModeTransitionOffset,\r
+      Size\r
+      );\r
+\r
+    ExchangeInfo->ModeTransitionMemory = (UINT32)CpuMpData->WakeupBufferHigh;\r
+    ExchangeInfo->ModeHighMemory = (UINT32)CpuMpData->WakeupBufferHigh +\r
+                                   (UINT32)ExchangeInfo->ModeOffset -\r
+                                   (UINT32)CpuMpData->AddressMap.ModeTransitionOffset;\r
+    ExchangeInfo->ModeHighSegment = (UINT16)ExchangeInfo->CodeSegment;\r
+  } else {\r
+    ExchangeInfo->ModeTransitionMemory = (UINT32)\r
+      (ExchangeInfo->BufferStart + CpuMpData->AddressMap.ModeTransitionOffset);\r
+  }\r
 }\r
 \r
 /**\r
@@ -876,6 +926,10 @@ AllocateResetVector (
     CpuMpData->WakeupBuffer      = GetWakeupBuffer (ApResetVectorSize);\r
     CpuMpData->MpCpuExchangeInfo = (MP_CPU_EXCHANGE_INFO *) (UINTN)\r
                     (CpuMpData->WakeupBuffer + CpuMpData->AddressMap.RendezvousFunnelSize);\r
+    CpuMpData->WakeupBufferHigh  = GetModeTransitionBuffer (\r
+                                    CpuMpData->AddressMap.RendezvousFunnelSize -\r
+                                    CpuMpData->AddressMap.ModeTransitionOffset\r
+                                    );\r
   }\r
   BackupAndPrepareWakeupBuffer (CpuMpData);\r
 }\r
@@ -1502,7 +1556,7 @@ MpInitLibInitialize (
   //\r
   // Set BSP basic information\r
   //\r
-  InitializeApData (CpuMpData, 0, 0, CpuMpData->Buffer);\r
+  InitializeApData (CpuMpData, 0, 0, CpuMpData->Buffer + ApStackSize);\r
   //\r
   // Save assembly code information\r
   //\r
@@ -1771,6 +1825,7 @@ SwitchBSPWorker (
   ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);\r
   ApicBaseMsr.Bits.BSP = 1;\r
   AsmWriteMsr64 (MSR_IA32_APIC_BASE, ApicBaseMsr.Uint64);\r
+  ProgramVirtualWireMode ();\r
 \r
   //\r
   // Wait for old BSP finished AP task\r