/** @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
#include <Protocol/SmmAccess2.h>\r
#include <Protocol/SmmReadyToLock.h>\r
#include <Protocol/SmmCpuService.h>\r
+#include <Protocol/SmmMemoryAttribute.h>
\r
#include <Guid/AcpiS3Context.h>\r
#include <Guid/PiSmmMemoryAttributesTable.h>\r
#define PAGING_2M_ADDRESS_MASK_64 0x000FFFFFFFE00000ull\r
#define PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull\r
\r
+#define SMRR_MAX_ADDRESS BASE_4GB\r
+\r
typedef enum {\r
PageNone,\r
Page4K,\r
///\r
extern UINT8 mSmmSaveStateRegisterLma;\r
\r
-\r
//\r
// SMM CPU Protocol function prototypes.\r
//\r
extern SPIN_LOCK *mPFLock;\r
extern SPIN_LOCK *mConfigSmmCodeAccessCheckLock;\r
extern SPIN_LOCK *mMemoryMappedLock;\r
+extern EFI_SMRAM_DESCRIPTOR *mSmmCpuSmramRanges;\r
+extern UINTN mSmmCpuSmramRangeCount;\r
+extern UINT8 mPhysicalAddressBits;\r
+\r
+//\r
+// Copy of the PcdPteMemoryEncryptionAddressOrMask\r
+//\r
+extern UINT64 mAddressEncMask;\r
\r
/**\r
Create 4G PageTable in SMRAM.\r
OUT UINTN *GdtStepSize\r
);\r
\r
+/**\r
+ This function sets GDT/IDT buffer to be RO and XP.\r
+**/\r
+VOID\r
+PatchGdtIdtMap (\r
+ VOID\r
+ );\r
+\r
/**\r
\r
Register the SMM Foundation entry point.\r
IN OUT VOID *ProcArguments OPTIONAL\r
);\r
\r
+/**\r
+ This function sets the attributes for the memory region specified by BaseAddress and\r
+ Length from their current attributes to the attributes specified by Attributes.\r
+\r
+ @param[in] BaseAddress The physical address that is the start address of a memory region.\r
+ @param[in] Length The size in bytes of the memory region.\r
+ @param[in] Attributes The bit mask of attributes to set for the memory region.\r
+\r
+ @retval EFI_SUCCESS The attributes were set for the memory region.\r
+ @retval EFI_ACCESS_DENIED The attributes for the memory resource range specified by\r
+ BaseAddress and Length cannot be modified.\r
+ @retval EFI_INVALID_PARAMETER Length is zero.\r
+ Attributes specified an illegal combination of attributes that\r
+ cannot be set together.\r
+ @retval EFI_OUT_OF_RESOURCES There are not enough system resources to modify the attributes of\r
+ the memory resource range.\r
+ @retval EFI_UNSUPPORTED The processor does not support one or more bytes of the memory\r
+ resource range specified by BaseAddress and Length.\r
+ The bit mask of attributes is not support for the memory resource\r
+ range specified by BaseAddress and Length.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+SmmSetMemoryAttributes (\r
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,\r
+ IN UINT64 Length,\r
+ IN UINT64 Attributes\r
+ );\r
+\r
+/**\r
+ This function clears the attributes for the memory region specified by BaseAddress and\r
+ Length from their current attributes to the attributes specified by Attributes.\r
+\r
+ @param[in] BaseAddress The physical address that is the start address of a memory region.\r
+ @param[in] Length The size in bytes of the memory region.\r
+ @param[in] Attributes The bit mask of attributes to clear for the memory region.\r
+\r
+ @retval EFI_SUCCESS The attributes were cleared for the memory region.\r
+ @retval EFI_ACCESS_DENIED The attributes for the memory resource range specified by\r
+ BaseAddress and Length cannot be modified.\r
+ @retval EFI_INVALID_PARAMETER Length is zero.\r
+ Attributes specified an illegal combination of attributes that\r
+ cannot be set together.\r
+ @retval EFI_OUT_OF_RESOURCES There are not enough system resources to modify the attributes of\r
+ the memory resource range.\r
+ @retval EFI_UNSUPPORTED The processor does not support one or more bytes of the memory\r
+ resource range specified by BaseAddress and Length.\r
+ The bit mask of attributes is not support for the memory resource\r
+ range specified by BaseAddress and Length.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+SmmClearMemoryAttributes (\r
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,\r
+ IN UINT64 Length,\r
+ IN UINT64 Attributes\r
+ );\r
+\r
/**\r
Initialize MP synchronization data.\r
\r
VOID\r
EFIAPI\r
SmiPFHandler (\r
- IN EFI_EXCEPTION_TYPE InterruptType,\r
- IN EFI_SYSTEM_CONTEXT SystemContext\r
+ IN EFI_EXCEPTION_TYPE InterruptType,\r
+ IN EFI_SYSTEM_CONTEXT SystemContext\r
);\r
\r
/**\r
VOID\r
);\r
\r
+/**\r
+ This function sets UEFI memory attribute according to UEFI memory map.\r
+**/\r
+VOID\r
+SetUefiMemMapAttributes (\r
+ VOID\r
+ );\r
+\r
+/**\r
+ Return if the Address is forbidden as SMM communication buffer.\r
+\r
+ @param[in] Address the address to be checked\r
+\r
+ @return TRUE The address is forbidden as SMM communication buffer.\r
+ @return FALSE The address is allowed as SMM communication buffer.\r
+**/\r
+BOOLEAN\r
+IsSmmCommBufferForbiddenAddress (\r
+ IN UINT64 Address\r
+ );\r
+\r
+/**\r
+ This function caches the UEFI memory map information.\r
+**/\r
+VOID\r
+GetUefiMemoryMap (\r
+ VOID\r
+ );\r
+\r
/**\r
This function sets memory attribute for page table.\r
**/\r
IN UINTN NumberToFinishAddress\r
);\r
\r
+/**
+ This function set given attributes of the memory region specified by
+ BaseAddress and Length.
+
+ @param This The EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL instance.
+ @param BaseAddress The physical address that is the start address of
+ a memory region.
+ @param Length The size in bytes of the memory region.
+ @param Attributes The bit mask of attributes to set for the memory
+ region.
+
+ @retval EFI_SUCCESS The attributes were set for the memory region.
+ @retval EFI_INVALID_PARAMETER Length is zero.
+ Attributes specified an illegal combination of
+ attributes that cannot be set together.
+ @retval EFI_UNSUPPORTED The processor does not support one or more
+ bytes of the memory resource range specified
+ by BaseAddress and Length.
+ The bit mask of attributes is not support for
+ the memory resource range specified by
+ BaseAddress and Length.
+
+**/
+EFI_STATUS
+EFIAPI
+EdkiiSmmSetMemoryAttributes (
+ IN EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL *This,
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 Attributes
+ );
+
+/**
+ This function clears given attributes of the memory region specified by
+ BaseAddress and Length.
+
+ @param This The EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL instance.
+ @param BaseAddress The physical address that is the start address of
+ a memory region.
+ @param Length The size in bytes of the memory region.
+ @param Attributes The bit mask of attributes to set for the memory
+ region.
+
+ @retval EFI_SUCCESS The attributes were set for the memory region.
+ @retval EFI_INVALID_PARAMETER Length is zero.
+ Attributes specified an illegal combination of
+ attributes that cannot be set together.
+ @retval EFI_UNSUPPORTED The processor does not support one or more
+ bytes of the memory resource range specified
+ by BaseAddress and Length.
+ The bit mask of attributes is not support for
+ the memory resource range specified by
+ BaseAddress and Length.
+
+**/
+EFI_STATUS
+EFIAPI
+EdkiiSmmClearMemoryAttributes (
+ IN EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL *This,
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 Attributes
+ );
+
+/**
+ This function retrieve the attributes of the memory region specified by
+ BaseAddress and Length. If different attributes are got from different part
+ of the memory region, EFI_NO_MAPPING will be returned.
+
+ @param This The EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL instance.
+ @param BaseAddress The physical address that is the start address of
+ a memory region.
+ @param Length The size in bytes of the memory region.
+ @param Attributes Pointer to attributes returned.
+
+ @retval EFI_SUCCESS The attributes got for the memory region.
+ @retval EFI_INVALID_PARAMETER Length is zero.
+ Attributes is NULL.
+ @retval EFI_NO_MAPPING Attributes are not consistent cross the memory
+ region.
+ @retval EFI_UNSUPPORTED The processor does not support one or more
+ bytes of the memory resource range specified
+ by BaseAddress and Length.
+ The bit mask of attributes is not support for
+ the memory resource range specified by
+ BaseAddress and Length.
+
+**/
+EFI_STATUS
+EFIAPI
+EdkiiSmmGetMemoryAttributes (
+ IN EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL *This,
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 *Attributes
+ );
+
#endif\r
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