/** @file\r
Agent Module to load other modules to deploy SMM Entry Vector for X86 CPU.\r
\r
-Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>\r
+\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
//\r
BOOLEAN mSmmCodeAccessCheckEnable = FALSE;\r
\r
+//\r
+// Global copy of the PcdPteMemoryEncryptionAddressOrMask\r
+//\r
+UINT64 mAddressEncMask = 0;\r
+\r
//\r
// Spin lock used to serialize setting of SMM Code Access Check feature\r
//\r
SPIN_LOCK *mConfigSmmCodeAccessCheckLock = NULL;\r
\r
+//\r
+// Saved SMM ranges information\r
+//\r
+EFI_SMRAM_DESCRIPTOR *mSmmCpuSmramRanges;\r
+UINTN mSmmCpuSmramRangeCount;\r
+\r
/**\r
Initialize IDT to setup exception handlers for SMM.\r
\r
)\r
{\r
UINTN Pe32Data;\r
- EFI_IMAGE_DOS_HEADER *DosHdr;\r
- EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r
VOID *PdbPointer;\r
- UINT64 DumpIpAddress;\r
\r
//\r
// Find Image Base\r
//\r
- Pe32Data = CallerIpAddress & ~(SIZE_4KB - 1);\r
- while (Pe32Data != 0) {\r
- DosHdr = (EFI_IMAGE_DOS_HEADER *) Pe32Data;\r
- if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
- //\r
- // DOS image header is present, so read the PE header after the DOS image header.\r
- //\r
- Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)(Pe32Data + (UINTN) ((DosHdr->e_lfanew) & 0x0ffff));\r
- //\r
- // Make sure PE header address does not overflow and is less than the initial address.\r
- //\r
- if (((UINTN)Hdr.Pe32 > Pe32Data) && ((UINTN)Hdr.Pe32 < CallerIpAddress)) {\r
- if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {\r
- //\r
- // It's PE image.\r
- //\r
- break;\r
- }\r
- }\r
- }\r
-\r
- //\r
- // Not found the image base, check the previous aligned address\r
- //\r
- Pe32Data -= SIZE_4KB;\r
- }\r
-\r
- DumpIpAddress = CallerIpAddress;\r
- DEBUG ((EFI_D_ERROR, "It is invoked from the instruction before IP(0x%lx)", DumpIpAddress));\r
-\r
+ Pe32Data = PeCoffSearchImageBase (CallerIpAddress);\r
if (Pe32Data != 0) {\r
+ DEBUG ((DEBUG_ERROR, "It is invoked from the instruction before IP(0x%p)", (VOID *) CallerIpAddress));\r
PdbPointer = PeCoffLoaderGetPdbPointer ((VOID *) Pe32Data);\r
if (PdbPointer != NULL) {\r
- DEBUG ((EFI_D_ERROR, " in module (%a)", PdbPointer));\r
+ DEBUG ((DEBUG_ERROR, " in module (%a)\n", PdbPointer));\r
}\r
}\r
}\r
{\r
GetAcpiCpuData ();\r
\r
+ //\r
+ // Cache a copy of UEFI memory map before we start profiling feature.\r
+ //\r
+ GetUefiMemoryMap ();\r
+\r
//\r
// Set SMM ready to lock flag and return\r
//\r
mSmmCodeAccessCheckEnable = PcdGetBool (PcdCpuSmmCodeAccessCheckEnable);\r
DEBUG ((EFI_D_INFO, "PcdCpuSmmCodeAccessCheckEnable = %d\n", mSmmCodeAccessCheckEnable));\r
\r
+ //\r
+ // Save the PcdPteMemoryEncryptionAddressOrMask value into a global variable.\r
+ // Make sure AddressEncMask is contained to smallest supported address field.\r
+ //\r
+ mAddressEncMask = PcdGet64 (PcdPteMemoryEncryptionAddressOrMask) & PAGING_1G_ADDRESS_MASK_64;\r
+ DEBUG ((EFI_D_INFO, "mAddressEncMask = 0x%lx\n", mAddressEncMask));\r
+\r
//\r
// If support CPU hot plug, we need to allocate resources for possibly hot-added processors\r
//\r
UINTN Size;\r
EFI_SMM_ACCESS2_PROTOCOL *SmmAccess;\r
EFI_SMRAM_DESCRIPTOR *CurrentSmramRange;\r
- EFI_SMRAM_DESCRIPTOR *SmramRanges;\r
- UINTN SmramRangeCount;\r
UINTN Index;\r
UINT64 MaxSize;\r
BOOLEAN Found;\r
Status = SmmAccess->GetCapabilities (SmmAccess, &Size, NULL);\r
ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r
\r
- SmramRanges = (EFI_SMRAM_DESCRIPTOR *)AllocatePool (Size);\r
- ASSERT (SmramRanges != NULL);\r
+ mSmmCpuSmramRanges = (EFI_SMRAM_DESCRIPTOR *)AllocatePool (Size);\r
+ ASSERT (mSmmCpuSmramRanges != NULL);\r
\r
- Status = SmmAccess->GetCapabilities (SmmAccess, &Size, SmramRanges);\r
+ Status = SmmAccess->GetCapabilities (SmmAccess, &Size, mSmmCpuSmramRanges);\r
ASSERT_EFI_ERROR (Status);\r
\r
- SmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);\r
+ mSmmCpuSmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);\r
\r
//\r
// Find the largest SMRAM range between 1MB and 4GB that is at least 256K - 4K in size\r
//\r
CurrentSmramRange = NULL;\r
- for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < SmramRangeCount; Index++) {\r
+ for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < mSmmCpuSmramRangeCount; Index++) {\r
//\r
// Skip any SMRAM region that is already allocated, needs testing, or needs ECC initialization\r
//\r
- if ((SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {\r
+ if ((mSmmCpuSmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {\r
continue;\r
}\r
\r
- if (SmramRanges[Index].CpuStart >= BASE_1MB) {\r
- if ((SmramRanges[Index].CpuStart + SmramRanges[Index].PhysicalSize) <= BASE_4GB) {\r
- if (SmramRanges[Index].PhysicalSize >= MaxSize) {\r
- MaxSize = SmramRanges[Index].PhysicalSize;\r
- CurrentSmramRange = &SmramRanges[Index];\r
+ if (mSmmCpuSmramRanges[Index].CpuStart >= BASE_1MB) {\r
+ if ((mSmmCpuSmramRanges[Index].CpuStart + mSmmCpuSmramRanges[Index].PhysicalSize) <= SMRR_MAX_ADDRESS) {\r
+ if (mSmmCpuSmramRanges[Index].PhysicalSize >= MaxSize) {\r
+ MaxSize = mSmmCpuSmramRanges[Index].PhysicalSize;\r
+ CurrentSmramRange = &mSmmCpuSmramRanges[Index];\r
}\r
}\r
}\r
\r
do {\r
Found = FALSE;\r
- for (Index = 0; Index < SmramRangeCount; Index++) {\r
- if (SmramRanges[Index].CpuStart < *SmrrBase && *SmrrBase == (SmramRanges[Index].CpuStart + SmramRanges[Index].PhysicalSize)) {\r
- *SmrrBase = (UINT32)SmramRanges[Index].CpuStart;\r
- *SmrrSize = (UINT32)(*SmrrSize + SmramRanges[Index].PhysicalSize);\r
+ for (Index = 0; Index < mSmmCpuSmramRangeCount; Index++) {\r
+ if (mSmmCpuSmramRanges[Index].CpuStart < *SmrrBase &&\r
+ *SmrrBase == (mSmmCpuSmramRanges[Index].CpuStart + mSmmCpuSmramRanges[Index].PhysicalSize)) {\r
+ *SmrrBase = (UINT32)mSmmCpuSmramRanges[Index].CpuStart;\r
+ *SmrrSize = (UINT32)(*SmrrSize + mSmmCpuSmramRanges[Index].PhysicalSize);\r
Found = TRUE;\r
- } else if ((*SmrrBase + *SmrrSize) == SmramRanges[Index].CpuStart && SmramRanges[Index].PhysicalSize > 0) {\r
- *SmrrSize = (UINT32)(*SmrrSize + SmramRanges[Index].PhysicalSize);\r
+ } else if ((*SmrrBase + *SmrrSize) == mSmmCpuSmramRanges[Index].CpuStart && mSmmCpuSmramRanges[Index].PhysicalSize > 0) {\r
+ *SmrrSize = (UINT32)(*SmrrSize + mSmmCpuSmramRanges[Index].PhysicalSize);\r
Found = TRUE;\r
}\r
}\r
} while (Found);\r
\r
- FreePool (SmramRanges);\r
DEBUG ((EFI_D_INFO, "SMRR Base: 0x%x, SMRR Size: 0x%x\n", *SmrrBase, *SmrrSize));\r
}\r
\r
}\r
}\r
\r
-/**\r
- Set code region to be read only and data region to be execute disable.\r
-**/\r
-VOID\r
-SetRegionAttributes (\r
- VOID\r
- )\r
-{\r
- SetMemMapAttributes ();\r
-}\r
-\r
/**\r
This API provides a way to allocate memory for page table.\r
\r
Status = gSmst->SmmFreePages (Memory, UnalignedPages);\r
ASSERT_EFI_ERROR (Status);\r
}\r
- Memory = (EFI_PHYSICAL_ADDRESS) (AlignedMemory + EFI_PAGES_TO_SIZE (Pages));\r
+ Memory = AlignedMemory + EFI_PAGES_TO_SIZE (Pages);\r
UnalignedPages = RealPages - Pages - UnalignedPages;\r
if (UnalignedPages > 0) {\r
//\r
//\r
// Mark critical region to be read-only in page table\r
//\r
- SetRegionAttributes ();\r
+ SetMemMapAttributes ();\r
+\r
+ //\r
+ // For outside SMRAM, we only map SMM communication buffer or MMIO.\r
+ //\r
+ SetUefiMemMapAttributes ();\r
\r
//\r
// Set page table itself to be read-only\r
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