Ia32-specific functionality for DxeLoad.\r
\r
Copyright (c) 2006 - 2015, 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
PAGE_TABLE_ENTRY *PageDirectoryEntry;\r
UINTN TotalPagesNum;\r
UINTN PageAddress;\r
+ UINT64 AddressEncMask;\r
+\r
+ //\r
+ // Make sure AddressEncMask is contained to smallest supported address field\r
+ //\r
+ AddressEncMask = PcdGet64 (PcdPteMemoryEncryptionAddressOrMask) & PAGING_1G_ADDRESS_MASK_64;\r
\r
PhysicalAddressBits = 32;\r
\r
//\r
// Fill in a Page Directory Pointer Entries\r
//\r
- PageDirectoryPointerEntry->Uint64 = (UINT64) (UINTN) PageDirectoryEntry;\r
+ PageDirectoryPointerEntry->Uint64 = (UINT64) (UINTN) PageDirectoryEntry | AddressEncMask;\r
PageDirectoryPointerEntry->Bits.Present = 1;\r
\r
for (IndexOfPageDirectoryEntries = 0; IndexOfPageDirectoryEntries < 512; IndexOfPageDirectoryEntries++, PageDirectoryEntry++, PhysicalAddress += SIZE_2MB) {\r
- if ((PhysicalAddress < StackBase + StackSize) && ((PhysicalAddress + SIZE_2MB) > StackBase)) {\r
+ if ((IsNullDetectionEnabled () && PhysicalAddress == 0)\r
+ || ((PhysicalAddress < StackBase + StackSize)\r
+ && ((PhysicalAddress + SIZE_2MB) > StackBase))) {\r
//\r
// Need to split this 2M page that covers stack range.\r
//\r
//\r
// Fill in the Page Directory entries\r
//\r
- PageDirectoryEntry->Uint64 = (UINT64) PhysicalAddress;\r
+ PageDirectoryEntry->Uint64 = (UINT64) PhysicalAddress | AddressEncMask;\r
PageDirectoryEntry->Bits.ReadWrite = 1;\r
PageDirectoryEntry->Bits.Present = 1;\r
PageDirectoryEntry->Bits.MustBe1 = 1;\r
return Available;\r
}\r
\r
+/**\r
+ The function will check if page table should be setup or not.\r
+\r
+ @retval TRUE Page table should be created.\r
+ @retval FALSE Page table should not be created.\r
+\r
+**/\r
+BOOLEAN\r
+ToBuildPageTable (\r
+ VOID\r
+ )\r
+{\r
+ if (!IsIa32PaeSupport ()) {\r
+ return FALSE;\r
+ }\r
+\r
+ if (IsNullDetectionEnabled ()) {\r
+ return TRUE;\r
+ }\r
+\r
+ if (PcdGet8 (PcdHeapGuardPropertyMask) != 0) {\r
+ return TRUE;\r
+ }\r
+\r
+ if (PcdGetBool (PcdCpuStackGuard)) {\r
+ return TRUE;\r
+ }\r
+\r
+ if (PcdGetBool (PcdSetNxForStack) && IsExecuteDisableBitAvailable ()) {\r
+ return TRUE;\r
+ }\r
+\r
+ return FALSE;\r
+}\r
+\r
/**\r
Transfers control to DxeCore.\r
\r
EFI_PEI_VECTOR_HANDOFF_INFO_PPI *VectorHandoffInfoPpi;\r
BOOLEAN BuildPageTablesIa32Pae;\r
\r
+ if (IsNullDetectionEnabled ()) {\r
+ ClearFirst4KPage (HobList.Raw);\r
+ }\r
+\r
Status = PeiServicesAllocatePages (EfiBootServicesData, EFI_SIZE_TO_PAGES (STACK_SIZE), &BaseOfStack);\r
ASSERT_EFI_ERROR (Status);\r
\r
Status = PeiServicesAllocatePages (\r
EfiBootServicesData,\r
EFI_SIZE_TO_PAGES(sizeof (X64_IDT_TABLE) + SizeOfTemplate * IDT_ENTRY_COUNT),\r
- (EFI_PHYSICAL_ADDRESS *) &IdtTableForX64\r
+ &VectorAddress\r
);\r
ASSERT_EFI_ERROR (Status);\r
\r
// Store EFI_PEI_SERVICES** in the 4 bytes immediately preceding IDT to avoid that\r
// it may not be gotten correctly after IDT register is re-written.\r
//\r
+ IdtTableForX64 = (X64_IDT_TABLE *) (UINTN) VectorAddress;\r
IdtTableForX64->PeiService = GetPeiServicesTablePointer ();\r
\r
VectorAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) (IdtTableForX64 + 1);\r
TopOfStack = (EFI_PHYSICAL_ADDRESS) (UINTN) ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);\r
\r
PageTables = 0;\r
- BuildPageTablesIa32Pae = (BOOLEAN) (PcdGetBool (PcdSetNxForStack) && IsIa32PaeSupport () && IsExecuteDisableBitAvailable ());\r
+ BuildPageTablesIa32Pae = ToBuildPageTable ();\r
if (BuildPageTablesIa32Pae) {\r
PageTables = Create4GPageTablesIa32Pae (BaseOfStack, STACK_SIZE);\r
- EnableExecuteDisableBit ();\r
+ if (IsExecuteDisableBitAvailable ()) {\r
+ EnableExecuteDisableBit();\r
+ }\r
}\r
\r
//\r