Sort mSmmCpuSmramRanges after get the SMRAM info in
FindSmramInfo() function.
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 | 35
+++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
index c0e368ea94..d69e976269 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c
@@ -1197,6 +1197,32 @@ PiCpuSmmEntry (
return EFI_SUCCESS;
}
+/**
+ Function to compare 2 EFI_SMRAM_DESCRIPTOR based on CpuStart.
+
+ @param[in] Buffer1 pointer to Device Path poiner to compare
+ @param[in] Buffer2 pointer to second DevicePath 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
+CpuSmramRangeCompare (
+ IN CONST VOID *Buffer1,
+ IN CONST VOID *Buffer2
+ )
+{
+ if (((EFI_SMRAM_DESCRIPTOR *)Buffer1)->CpuStart > ((EFI_SMRAM_DESCRIPTOR
*)Buffer2)->CpuStart) {
+ return 1;
+ } else if (((EFI_SMRAM_DESCRIPTOR *)Buffer1)->CpuStart <
((EFI_SMRAM_DESCRIPTOR *)Buffer2)->CpuStart) {
+ return -1;
+ }
+
+ return 0;
+}
+
/**
Find out SMRAM information including SMRR base and SMRR size.
@@ -1218,6 +1244,7 @@ FindSmramInfo (
UINTN Index;
UINT64 MaxSize;
BOOLEAN Found;
+ VOID *Buffer;
//
// Get SMM Access Protocol
@@ -1240,6 +1267,14 @@ FindSmramInfo (
mSmmCpuSmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);
+ //
+ // Sort the mSmmCpuSmramRanges
+ //
+ Buffer = AllocateZeroPool (sizeof (EFI_SMRAM_DESCRIPTOR));
+ ASSERT (Buffer != NULL);
+ QuickSort (mSmmCpuSmramRanges, mSmmCpuSmramRangeCount, sizeof
(EFI_SMRAM_DESCRIPTOR), (BASE_SORT_COMPARE)CpuSmramRangeCompare, Buffer);
+ FreePool (Buffer);
+
//
// Find the largest SMRAM range between 1MB and 4GB that is at least 256K -
4K in size
//
--
2.31.1.windows.1
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