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| author | Jeff Fan <jeff.fan@intel.com> | 2017-03-28 08:48:17 +0800 |
|---|---|---|
| committer | Jeff Fan <jeff.fan@intel.com> | 2017-04-01 11:44:44 +0800 |
| commit | 7ed6f78145ee63d27c7fbcba2fbc9f562c4ed0ae (patch) | |
| tree | e62e51ccae786354e6868eb7d1f8a1a3245d7be0 /UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | |
| parent | 4ef6c3850e66617df1ed35a4a390567d2bbf6b76 (diff) | |
| download | edk2-7ed6f78145ee63d27c7fbcba2fbc9f562c4ed0ae.tar.gz edk2-7ed6f78145ee63d27c7fbcba2fbc9f562c4ed0ae.tar.bz2 edk2-7ed6f78145ee63d27c7fbcba2fbc9f562c4ed0ae.zip | |
UefiCpuPkg/PiSmmCpuDxeSmm: Save SMM ranges info into global variables
v2:
Add #define SMRR_MAX_ADDRESS to clarify SMRR requirement.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Diffstat (limited to 'UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c')
| -rwxr-xr-x | UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c | 44 |
1 files changed, 24 insertions, 20 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c index d06148263c..47cba100e7 100755 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.c @@ -108,6 +108,12 @@ UINT64 mAddressEncMask = 0; //
SPIN_LOCK *mConfigSmmCodeAccessCheckLock = NULL;
+//
+// Saved SMM ranges information
+//
+EFI_SMRAM_DESCRIPTOR *mSmmCpuSmramRanges;
+UINTN mSmmCpuSmramRangeCount;
+
/**
Initialize IDT to setup exception handlers for SMM.
@@ -971,8 +977,6 @@ FindSmramInfo ( UINTN Size;
EFI_SMM_ACCESS2_PROTOCOL *SmmAccess;
EFI_SMRAM_DESCRIPTOR *CurrentSmramRange;
- EFI_SMRAM_DESCRIPTOR *SmramRanges;
- UINTN SmramRangeCount;
UINTN Index;
UINT64 MaxSize;
BOOLEAN Found;
@@ -990,31 +994,31 @@ FindSmramInfo ( Status = SmmAccess->GetCapabilities (SmmAccess, &Size, NULL);
ASSERT (Status == EFI_BUFFER_TOO_SMALL);
- SmramRanges = (EFI_SMRAM_DESCRIPTOR *)AllocatePool (Size);
- ASSERT (SmramRanges != NULL);
+ mSmmCpuSmramRanges = (EFI_SMRAM_DESCRIPTOR *)AllocatePool (Size);
+ ASSERT (mSmmCpuSmramRanges != NULL);
- Status = SmmAccess->GetCapabilities (SmmAccess, &Size, SmramRanges);
+ Status = SmmAccess->GetCapabilities (SmmAccess, &Size, mSmmCpuSmramRanges);
ASSERT_EFI_ERROR (Status);
- SmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);
+ mSmmCpuSmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);
//
// Find the largest SMRAM range between 1MB and 4GB that is at least 256K - 4K in size
//
CurrentSmramRange = NULL;
- for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < SmramRangeCount; Index++) {
+ for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < mSmmCpuSmramRangeCount; Index++) {
//
// Skip any SMRAM region that is already allocated, needs testing, or needs ECC initialization
//
- if ((SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {
+ if ((mSmmCpuSmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {
continue;
}
- if (SmramRanges[Index].CpuStart >= BASE_1MB) {
- if ((SmramRanges[Index].CpuStart + SmramRanges[Index].PhysicalSize) <= BASE_4GB) {
- if (SmramRanges[Index].PhysicalSize >= MaxSize) {
- MaxSize = SmramRanges[Index].PhysicalSize;
- CurrentSmramRange = &SmramRanges[Index];
+ if (mSmmCpuSmramRanges[Index].CpuStart >= BASE_1MB) {
+ if ((mSmmCpuSmramRanges[Index].CpuStart + mSmmCpuSmramRanges[Index].PhysicalSize) <= SMRR_MAX_ADDRESS) {
+ if (mSmmCpuSmramRanges[Index].PhysicalSize >= MaxSize) {
+ MaxSize = mSmmCpuSmramRanges[Index].PhysicalSize;
+ CurrentSmramRange = &mSmmCpuSmramRanges[Index];
}
}
}
@@ -1027,19 +1031,19 @@ FindSmramInfo ( do {
Found = FALSE;
- for (Index = 0; Index < SmramRangeCount; Index++) {
- if (SmramRanges[Index].CpuStart < *SmrrBase && *SmrrBase == (SmramRanges[Index].CpuStart + SmramRanges[Index].PhysicalSize)) {
- *SmrrBase = (UINT32)SmramRanges[Index].CpuStart;
- *SmrrSize = (UINT32)(*SmrrSize + SmramRanges[Index].PhysicalSize);
+ for (Index = 0; Index < mSmmCpuSmramRangeCount; Index++) {
+ if (mSmmCpuSmramRanges[Index].CpuStart < *SmrrBase &&
+ *SmrrBase == (mSmmCpuSmramRanges[Index].CpuStart + mSmmCpuSmramRanges[Index].PhysicalSize)) {
+ *SmrrBase = (UINT32)mSmmCpuSmramRanges[Index].CpuStart;
+ *SmrrSize = (UINT32)(*SmrrSize + mSmmCpuSmramRanges[Index].PhysicalSize);
Found = TRUE;
- } else if ((*SmrrBase + *SmrrSize) == SmramRanges[Index].CpuStart && SmramRanges[Index].PhysicalSize > 0) {
- *SmrrSize = (UINT32)(*SmrrSize + SmramRanges[Index].PhysicalSize);
+ } else if ((*SmrrBase + *SmrrSize) == mSmmCpuSmramRanges[Index].CpuStart && mSmmCpuSmramRanges[Index].PhysicalSize > 0) {
+ *SmrrSize = (UINT32)(*SmrrSize + mSmmCpuSmramRanges[Index].PhysicalSize);
Found = TRUE;
}
}
} while (Found);
- FreePool (SmramRanges);
DEBUG ((EFI_D_INFO, "SMRR Base: 0x%x, SMRR Size: 0x%x\n", *SmrrBase, *SmrrSize));
}
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