\r
#define SMM_PSD_OFFSET 0xfb00\r
\r
-typedef struct {\r
- UINT64 Signature; // Offset 0x00\r
- UINT16 Reserved1; // Offset 0x08\r
- UINT16 Reserved2; // Offset 0x0A\r
- UINT16 Reserved3; // Offset 0x0C\r
- UINT16 SmmCs; // Offset 0x0E\r
- UINT16 SmmDs; // Offset 0x10\r
- UINT16 SmmSs; // Offset 0x12\r
- UINT16 SmmOtherSegment; // Offset 0x14\r
- UINT16 Reserved4; // Offset 0x16\r
- UINT64 Reserved5; // Offset 0x18\r
- UINT64 Reserved6; // Offset 0x20\r
- UINT64 Reserved7; // Offset 0x28\r
- UINT64 SmmGdtPtr; // Offset 0x30\r
- UINT32 SmmGdtSize; // Offset 0x38\r
- UINT32 Reserved8; // Offset 0x3C\r
- UINT64 Reserved9; // Offset 0x40\r
- UINT64 Reserved10; // Offset 0x48\r
- UINT16 Reserved11; // Offset 0x50\r
- UINT16 Reserved12; // Offset 0x52\r
- UINT32 Reserved13; // Offset 0x54\r
- UINT64 MtrrBaseMaskPtr; // Offset 0x58\r
-} PROCESSOR_SMM_DESCRIPTOR;\r
-\r
-\r
///\r
/// All global semaphores' pointer\r
///\r
extern UINTN mGdtBufferSize;\r
extern IA32_DESCRIPTOR gcSmiIdtr;\r
extern VOID *gcSmiIdtrPtr;\r
-extern CONST PROCESSOR_SMM_DESCRIPTOR gcPsd;\r
extern UINT64 gPhyMask;\r
extern SMM_DISPATCHER_MP_SYNC_DATA *mSmmMpSyncData;\r
extern UINTN mSmmStackArrayBase;\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
);\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
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