Modify the gSmmBaseHobGuid consumption code to
remove the asuumption that there is only one
gSmmBaseHobGuid. If the CPU number is big enough,
there will be more than one SmmBaseHob in the
HOB list.
Signed-off-by: Dun Tan <dun....@intel.com>
Cc: Eric Dong <eric.d...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Rahul Kumar <rahul1.ku...@intel.com>
Cc: Gerd Hoffmann <kra...@redhat.com>
---
UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | 179
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------------------------------
1 file changed, 147 insertions(+), 32 deletions(-)
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
index b729f8ee63..fab2fed286 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
@@ -586,6 +586,132 @@ SmmReadyToLockEventNotify (
return EFI_SUCCESS;
}
+/**
+ Function to compare 2 SMM_BASE_HOB_DATA pointer based on ProcessorIndex.
+
+ @param[in] Buffer1 pointer to SMM_BASE_HOB_DATA poiner to compare
+ @param[in] Buffer2 pointer to second SMM_BASE_HOB_DATA pointer to
compare
+
+ @retval 0 Buffer1 equal to Buffer2
+ @retval <0 Buffer1 is less than Buffer2
+ @retval >0 Buffer1 is greater than Buffer2
+**/
+INTN
+EFIAPI
+SmBaseHobCompare (
+ IN CONST VOID *Buffer1,
+ IN CONST VOID *Buffer2
+ )
+{
+ if ((*(SMM_BASE_HOB_DATA **)Buffer1)->ProcessorIndex > (*(SMM_BASE_HOB_DATA
**)Buffer2)->ProcessorIndex) {
+ return 1;
+ } else if ((*(SMM_BASE_HOB_DATA **)Buffer1)->ProcessorIndex <
(*(SMM_BASE_HOB_DATA **)Buffer2)->ProcessorIndex) {
+ return -1;
+ }
+
+ return 0;
+}
+
+/**
+ Extract SmBase for all CPU from SmmBase HOB.
+
+ @param[in] MaxNumberOfCpus Max NumberOfCpus.
+
+ @retval SmBaseBuffer Pointer to SmBase Buffer.
+ @retval NULL gSmmBaseHobGuid was not been created.
+**/
+UINTN *
+GetSmBase (
+ IN UINTN MaxNumberOfCpus
+ )
+{
+ UINTN HobCount;
+ EFI_HOB_GUID_TYPE *GuidHob;
+ SMM_BASE_HOB_DATA *SmmBaseHobData;
+ UINTN NumberOfProcessors;
+ SMM_BASE_HOB_DATA **SmBaseHobs;
+ UINTN *SmBaseBuffer;
+ UINTN HobIndex;
+ UINTN SortBuffer;
+ UINTN ProcessorIndex;
+ UINT64 PrevProcessorIndex;
+ EFI_HOB_GUID_TYPE *FirstSmmBaseGuidHob;
+
+ SmmBaseHobData = NULL;
+ HobIndex = 0;
+ ProcessorIndex = 0;
+ HobCount = 0;
+ NumberOfProcessors = 0;
+
+ FirstSmmBaseGuidHob = GetFirstGuidHob (&gSmmBaseHobGuid);
+ if (FirstSmmBaseGuidHob == NULL) {
+ return NULL;
+ }
+
+ GuidHob = FirstSmmBaseGuidHob;
+ while (GuidHob != NULL) {
+ HobCount++;
+ SmmBaseHobData = GET_GUID_HOB_DATA (GuidHob);
+
+ if (NumberOfProcessors >= MaxNumberOfCpus) {
+ break;
+ }
+
+ NumberOfProcessors += SmmBaseHobData->NumberOfProcessors;
+ GuidHob = GetNextGuidHob (&gSmmBaseHobGuid, GET_NEXT_HOB
(GuidHob));
+ }
+
+ ASSERT (NumberOfProcessors == MaxNumberOfCpus);
+ if (NumberOfProcessors != MaxNumberOfCpus) {
+ CpuDeadLoop ();
+ }
+
+ SmBaseHobs = AllocatePool (sizeof (SMM_BASE_HOB_DATA *) * HobCount);
+ ASSERT (SmBaseHobs != NULL);
+ if (SmBaseHobs == NULL) {
+ return NULL;
+ }
+
+ //
+ // Record each SmmBaseHob pointer in the SmBaseHobs.
+ // The FirstSmmBaseGuidHob is to speed up this while-loop
+ // without needing to look for SmBaseHob from beginning.
+ //
+ GuidHob = FirstSmmBaseGuidHob;
+ while (HobIndex < HobCount) {
+ SmBaseHobs[HobIndex++] = GET_GUID_HOB_DATA (GuidHob);
+ GuidHob = GetNextGuidHob (&gSmmBaseHobGuid, GET_NEXT_HOB
(GuidHob));
+ }
+
+ SmBaseBuffer = (UINTN *)AllocatePool (sizeof (UINTN) * (MaxNumberOfCpus));
+ ASSERT (SmBaseBuffer != NULL);
+ if (SmBaseBuffer == NULL) {
+ FreePool (SmBaseHobs);
+ return NULL;
+ }
+
+ QuickSort (SmBaseHobs, HobCount, sizeof (SMM_BASE_HOB_DATA *),
(BASE_SORT_COMPARE)SmBaseHobCompare, &SortBuffer);
+ PrevProcessorIndex = 0;
+ for (HobIndex = 0; HobIndex < HobCount; HobIndex++) {
+ //
+ // Make sure no overlap and no gap in the CPU range covered by each HOB
+ //
+ ASSERT (SmBaseHobs[HobIndex]->ProcessorIndex == PrevProcessorIndex);
+
+ //
+ // Cache each SmBase in order.
+ //
+ for (ProcessorIndex = 0; ProcessorIndex <
SmBaseHobs[HobIndex]->NumberOfProcessors; ProcessorIndex++) {
+ SmBaseBuffer[PrevProcessorIndex + ProcessorIndex] =
(UINTN)SmBaseHobs[HobIndex]->SmBase[ProcessorIndex];
+ }
+
+ PrevProcessorIndex += SmBaseHobs[HobIndex]->NumberOfProcessors;
+ }
+
+ FreePool (SmBaseHobs);
+ return SmBaseBuffer;
+}
+
/**
Function to compare 2 MP_INFORMATION2_HOB_DATA pointer based on
ProcessorIndex.
@@ -744,27 +870,22 @@ PiCpuSmmEntry (
IN EFI_SYSTEM_TABLE *SystemTable
)
{
- EFI_STATUS Status;
- UINTN Index;
- VOID *Buffer;
- UINTN BufferPages;
- UINTN TileCodeSize;
- UINTN TileDataSize;
- UINTN TileSize;
- UINT8 *Stacks;
- VOID *Registration;
- UINT32 RegEax;
- UINT32 RegEbx;
- UINT32 RegEcx;
- UINT32 RegEdx;
- UINTN FamilyId;
- UINTN ModelId;
- UINT32 Cr3;
- EFI_HOB_GUID_TYPE *GuidHob;
- SMM_BASE_HOB_DATA *SmmBaseHobData;
-
- GuidHob = NULL;
- SmmBaseHobData = NULL;
+ EFI_STATUS Status;
+ UINTN Index;
+ VOID *Buffer;
+ UINTN BufferPages;
+ UINTN TileCodeSize;
+ UINTN TileDataSize;
+ UINTN TileSize;
+ UINT8 *Stacks;
+ VOID *Registration;
+ UINT32 RegEax;
+ UINT32 RegEbx;
+ UINT32 RegEcx;
+ UINT32 RegEdx;
+ UINTN FamilyId;
+ UINTN ModelId;
+ UINT32 Cr3;
PERF_FUNCTION_BEGIN ();
@@ -986,8 +1107,8 @@ PiCpuSmmEntry (
// Retrive the allocated SmmBase from gSmmBaseHobGuid. If found,
// means the SmBase relocation has been done.
//
- GuidHob = GetFirstGuidHob (&gSmmBaseHobGuid);
- if (GuidHob != NULL) {
+ mCpuHotPlugData.SmBase = GetSmBase (mMaxNumberOfCpus);
+ if (mCpuHotPlugData.SmBase != NULL) {
//
// Check whether the Required TileSize is enough.
//
@@ -997,12 +1118,6 @@ PiCpuSmmEntry (
return RETURN_BUFFER_TOO_SMALL;
}
- SmmBaseHobData = GET_GUID_HOB_DATA (GuidHob);
-
- //
- // Assume single instance of HOB produced, expect the
HOB.NumberOfProcessors equals to the mMaxNumberOfCpus.
- //
- ASSERT (SmmBaseHobData->NumberOfProcessors == (UINT32)mMaxNumberOfCpus &&
SmmBaseHobData->ProcessorIndex == 0);
mSmmRelocated = TRUE;
} else {
//
@@ -1048,8 +1163,6 @@ PiCpuSmmEntry (
//
mCpuHotPlugData.ApicId = (UINT64 *)AllocatePool (sizeof (UINT64) *
mMaxNumberOfCpus);
ASSERT (mCpuHotPlugData.ApicId != NULL);
- mCpuHotPlugData.SmBase = (UINTN *)AllocatePool (sizeof (UINTN) *
mMaxNumberOfCpus);
- ASSERT (mCpuHotPlugData.SmBase != NULL);
mCpuHotPlugData.ArrayLength = (UINT32)mMaxNumberOfCpus;
//
@@ -1058,7 +1171,9 @@ PiCpuSmmEntry (
// size for each CPU in the platform
//
for (Index = 0; Index < mMaxNumberOfCpus; Index++) {
- mCpuHotPlugData.SmBase[Index] = mSmmRelocated ?
(UINTN)SmmBaseHobData->SmBase[Index] : (UINTN)Buffer + Index * TileSize -
SMM_HANDLER_OFFSET;
+ if (!mSmmRelocated) {
+ mCpuHotPlugData.SmBase[Index] = (UINTN)Buffer + Index * TileSize -
SMM_HANDLER_OFFSET;
+ }
gSmmCpuPrivate->CpuSaveStateSize[Index] = sizeof (SMRAM_SAVE_STATE_MAP);
gSmmCpuPrivate->CpuSaveState[Index] = (VOID
*)(mCpuHotPlugData.SmBase[Index] + SMRAM_SAVE_STATE_MAP_OFFSET);
--
2.31.1.windows.1
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