UefiCpuPkg: Add STM GUIDs, Protocols, and PCDs
* Add GUIDed HOB that described MSEG region in SMRAM
* Add SM Monitor Init Protocol
* Add PCD to configure size of SMM exception stack
* Add PCD to configure MSEG region size if it is not
described by the gMsegSmramGuid GUIDed HOB.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
diff --git a/UefiCpuPkg/Include/Guid/MsegSmram.h b/UefiCpuPkg/Include/Guid/MsegSmram.h
new file mode 100644
index 0000000..ab337c4
--- /dev/null
+++ b/UefiCpuPkg/Include/Guid/MsegSmram.h
@@ -0,0 +1,30 @@
+/** @file
+
+ Defines the HOB GUID used to describe the MSEG memory region allocated in PEI.
+
+ Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _MSEG_SMRAM_H_
+#define _MSEG_SMRAM_H_
+
+#define MSEG_SMRAM_GUID \
+ { \
+ 0x5802bce4, 0xeeee, 0x4e33, { 0xa1, 0x30, 0xeb, 0xad, 0x27, 0xf0, 0xe4, 0x39 } \
+ }
+
+extern EFI_GUID gMsegSmramGuid;
+
+//
+// The data portion of this HOB is type EFI_SMRAM_DESCRIPTOR
+//
+
+#endif
diff --git a/UefiCpuPkg/Include/Protocol/SmMonitorInit.h b/UefiCpuPkg/Include/Protocol/SmMonitorInit.h
new file mode 100644
index 0000000..7b0aab0
--- /dev/null
+++ b/UefiCpuPkg/Include/Protocol/SmMonitorInit.h
@@ -0,0 +1,141 @@
+/** @file
+ STM service protocol definition
+
+ Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _SM_MONITOR_INIT_PROTOCOL_H_
+#define _SM_MONITOR_INIT_PROTOCOL_H_
+
+#include <PiSmm.h>
+#include <Register/StmApi.h>
+
+#define EFI_SM_MONITOR_INIT_PROTOCOL_GUID \
+ { 0x228f344d, 0xb3de, 0x43bb, 0xa4, 0xd7, 0xea, 0x20, 0xb, 0x1b, 0x14, 0x82}
+
+//
+// STM service
+//
+
+/**
+
+ Load STM image to MSEG.
+
+ @param StmImage STM image
+ @param StmImageSize STM image size
+
+ @retval EFI_SUCCESS Load STM to MSEG successfully
+ @retval EFI_ALREADY_STARTED STM image is already loaded to MSEG
+ @retval EFI_BUFFER_TOO_SMALL MSEG is smaller than minimal requirement of STM image
+ @retval EFI_UNSUPPORTED MSEG is not enabled
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SM_MONITOR_LOAD_MONITOR) (
+ IN EFI_PHYSICAL_ADDRESS StmImage,
+ IN UINTN StmImageSize
+ );
+
+/**
+
+ Add resources in list to database.
+
+ @param ResourceList A pointer to resource list to be added
+ @param NumEntries Optional number of entries.
+ If 0, list must be terminated by END_OF_RESOURCES.
+
+ @retval EFI_SUCCESS If resources are added
+ @retval EFI_INVALID_PARAMETER If nested procedure detected resource failer
+ @retval EFI_OUT_OF_RESOURCES If nested procedure returned it and we cannot allocate more areas.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SM_MONITOR_ADD_PI_RESOURCE) (
+ IN STM_RSC *ResourceList,
+ IN UINT32 NumEntries OPTIONAL
+ );
+
+/**
+
+ Delete resources in list to database.
+
+ @param ResourceList A pointer to resource list to be deleted
+ NULL means delete all resources.
+ @param NumEntries Optional number of entries.
+ If 0, list must be terminated by END_OF_RESOURCES.
+
+ @retval EFI_SUCCESS If resources are deleted
+ @retval EFI_INVALID_PARAMETER If nested procedure detected resource failer
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SM_MONITOR_DELETE_PI_RESOURCE) (
+ IN STM_RSC *ResourceList OPTIONAL,
+ IN UINT32 NumEntries OPTIONAL
+ );
+
+/**
+
+ Get BIOS resources.
+
+ @param ResourceList A pointer to resource list to be filled
+ @param ResourceSize On input it means size of resource list input.
+ On output it means size of resource list filled,
+ or the size of resource list to be filled if size of too small.
+
+ @retval EFI_SUCCESS If resources are returned.
+ @retval EFI_BUFFER_TOO_SMALL If resource list buffer is too small to hold the whole resources.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SM_MONITOR_GET_PI_RESOURCE) (
+ OUT STM_RSC *ResourceList,
+ IN OUT UINT32 *ResourceSize
+ );
+
+typedef UINT32 EFI_SM_MONITOR_STATE;
+#define EFI_SM_MONITOR_STATE_ENABLED 0x1
+#define EFI_SM_MONITOR_STATE_ACTIVATED 0x2
+
+/**
+
+ Get STM state
+
+ @return STM state
+
+**/
+typedef
+EFI_SM_MONITOR_STATE
+(EFIAPI *EFI_SM_MONITOR_GET_MONITOR_STATE) (
+ VOID
+ );
+
+typedef struct _EFI_SM_MONITOR_INIT_PROTOCOL {
+ //
+ // Valid at boot-time only
+ //
+ EFI_SM_MONITOR_LOAD_MONITOR LoadMonitor;
+ EFI_SM_MONITOR_ADD_PI_RESOURCE AddPiResource;
+ EFI_SM_MONITOR_DELETE_PI_RESOURCE DeletePiResource;
+ EFI_SM_MONITOR_GET_PI_RESOURCE GetPiResource;
+ //
+ // Valid at runtime
+ //
+ EFI_SM_MONITOR_GET_MONITOR_STATE GetMonitorState;
+} EFI_SM_MONITOR_INIT_PROTOCOL;
+
+extern EFI_GUID gEfiSmMonitorInitProtocolGuid;
+
+#endif
diff --git a/UefiCpuPkg/Include/Register/StmApi.h b/UefiCpuPkg/Include/Register/StmApi.h
new file mode 100644
index 0000000..6fb5971
--- /dev/null
+++ b/UefiCpuPkg/Include/Register/StmApi.h
@@ -0,0 +1,954 @@
+/** @file
+ STM API definition
+
+ Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ @par Specification Reference:
+ SMI Transfer Monitor (STM) User Guide Revision 1.00
+
+**/
+
+#ifndef _STM_API_H_
+#define _STM_API_H_
+
+#include <Register/StmStatusCode.h>
+#include <Register/StmResourceDescriptor.h>
+#include <Register/ArchitecturalMsr.h>
+
+#pragma pack (1)
+
+/**
+ STM Header Structures
+**/
+
+typedef struct {
+ UINT32 Intel64ModeSupported :1; ///> bitfield
+ UINT32 EptSupported :1; ///> bitfield
+ UINT32 Reserved :30; ///> must be 0
+} STM_FEAT;
+
+#define STM_SPEC_VERSION_MAJOR 1
+#define STM_SPEC_VERSION_MINOR 0
+
+typedef struct {
+ UINT8 StmSpecVerMajor;
+ UINT8 StmSpecVerMinor;
+ ///
+ /// Must be zero
+ ///
+ UINT16 Reserved;
+ UINT32 StaticImageSize;
+ UINT32 PerProcDynamicMemorySize;
+ UINT32 AdditionalDynamicMemorySize;
+ STM_FEAT StmFeatures;
+ UINT32 NumberOfRevIDs;
+ UINT32 StmSmmRevID[1];
+ ///
+ /// The total STM_HEADER should be 4K.
+ ///
+} SOFTWARE_STM_HEADER;
+
+typedef struct {
+ MSEG_HEADER HwStmHdr;
+ SOFTWARE_STM_HEADER SwStmHdr;
+} STM_HEADER;
+
+
+/**
+ VMCALL API Numbers
+ API number convention: BIOS facing VMCALL interfaces have bit 16 clear
+**/
+
+/**
+ StmMapAddressRange enables a SMM guest to create a non-1:1 virtual to
+ physical mapping of an address range into the SMM guest's virtual
+ memory space.
+
+ @param EAX #STM_API_MAP_ADDRESS_RANGE (0x00000001)
+ @param EBX Low 32 bits of physical address of caller allocated
+ STM_MAP_ADDRESS_RANGE_DESCRIPTOR structure.
+ @param ECX High 32 bits of physical address of caller allocated
+ STM_MAP_ADDRESS_RANGE_DESCRIPTOR structure. If Intel64Mode is
+ clear (0), ECX must be 0.
+
+ @note All fields of STM_MAP_ADDRESS_RANGE_DESCRIPTOR are inputs only. They
+ are not modified by StmMapAddressRange.
+
+ @retval CF 0
+ No error, EAX set to STM_SUCCESS.
+ The memory range was mapped as requested.
+ @retval CF 1
+ An error occurred, EAX holds relevant error value.
+ @retval EAX #ERROR_STM_SECURITY_VIOLATION
+ The requested mapping contains a protected resource.
+ @retval EAX #ERROR_STM_CACHE_TYPE_NOT_SUPPORTED
+ The requested cache type could not be satisfied.
+ @retval EAX #ERROR_STM_PAGE_NOT_FOUND
+ Page count must not be zero.
+ @retval EAX #ERROR_STM_FUNCTION_NOT_SUPPORTED
+ STM supports EPT and has not implemented StmMapAddressRange().
+ @retval EAX #ERROR_STM_UNSPECIFIED
+ An unspecified error occurred.
+
+ @note All other registers unmodified.
+**/
+#define STM_API_MAP_ADDRESS_RANGE 0x00000001
+
+/**
+ STM Map Address Range Descriptor for #STM_API_MAP_ADDRESS_RANGE VMCALL
+**/
+typedef struct {
+ UINT64 PhysicalAddress;
+ UINT64 VirtualAddress;
+ UINT32 PageCount;
+ UINT32 PatCacheType;
+} STM_MAP_ADDRESS_RANGE_DESCRIPTOR;
+
+/**
+ Define values for PatCacheType field of #STM_MAP_ADDRESS_RANGE_DESCRIPTOR
+ @{
+**/
+#define STM_MAP_ADDRESS_RANGE_PAT_CACHE_TYPE_ST_UC 0x00
+#define STM_MAP_ADDRESS_RANGE_PAT_CACHE_TYPE_WC 0x01
+#define STM_MAP_ADDRESS_RANGE_PAT_CACHE_TYPE_WT 0x04
+#define STM_MAP_ADDRESS_RANGE_PAT_CACHE_TYPE_WP 0x05
+#define STM_MAP_ADDRESS_RANGE_PAT_CACHE_TYPE_WB 0x06
+#define STM_MAP_ADDRESS_RANGE_PAT_CACHE_TYPE_UC 0x07
+#define STM_MAP_ADDRESS_RANGE_PAT_CACHE_TYPE_FOLLOW_MTRR 0xFFFFFFFF
+/// @}
+
+/**
+ StmUnmapAddressRange enables a SMM guest to remove mappings from its page
+ table.
+
+ If TXT_PROCESSOR_SMM_DESCRIPTOR.EptEnabled bit is set by the STM, BIOS can
+ control its own page tables. In this case, the STM implementation may
+ optionally return ERROR_STM_FUNCTION_NOT_SUPPORTED.
+
+ @param EAX #STM_API_UNMAP_ADDRESS_RANGE (0x00000002)
+ @param EBX Low 32 bits of virtual address of caller allocated
+ STM_UNMAP_ADDRESS_RANGE_DESCRIPTOR structure.
+ @param ECX High 32 bits of virtual address of caller allocated
+ STM_UNMAP_ADDRESS_RANGE_DESCRIPTOR structure. If Intel64Mode is
+ clear (0), ECX must be zero.
+
+ @retval CF 0
+ No error, EAX set to STM_SUCCESS. The memory range was unmapped
+ as requested.
+ @retval CF 1
+ An error occurred, EAX holds relevant error value.
+ @retval EAX #ERROR_STM_FUNCTION_NOT_SUPPORTED
+ STM supports EPT and has not implemented StmUnmapAddressRange().
+ @retval EAX #ERROR_STM_UNSPECIFIED
+ An unspecified error occurred.
+
+ @note All other registers unmodified.
+**/
+#define STM_API_UNMAP_ADDRESS_RANGE 0x00000002
+
+/**
+ STM Unmap Address Range Descriptor for #STM_API_UNMAP_ADDRESS_RANGE VMCALL
+**/
+typedef struct {
+ UINT64 VirtualAddress;
+ UINT32 Length;
+} STM_UNMAP_ADDRESS_RANGE_DESCRIPTOR;
+
+
+/**
+ Since the normal OS environment runs with a different set of page tables than
+ the SMM guest, virtual mappings will certainly be different. In order to do a
+ guest virtual to host physical translation of an address from the normal OS
+ code (EIP for example), it is necessary to walk the page tables governing the
+ OS page mappings. Since the SMM guest has no direct access to the page tables,
+ it must ask the STM to do this page table walk. This is supported via the
+ StmAddressLookup VMCALL. All OS page table formats need to be supported,
+ (e.g. PAE, PSE, Intel64, EPT, etc.)
+
+ StmAddressLookup takes a CR3 value and a virtual address from the interrupted
+ code as input and returns the corresponding physical address. It also
+ optionally maps the physical address into the SMM guest's virtual address
+ space. This new mapping persists ONLY for the duration of the SMI and if
+ needed in subsequent SMIs it must be remapped. PAT cache types follow the
+ interrupted environment's page table.
+
+ If EPT is enabled, OS CR3 only provides guest physical address information,
+ but the SMM guest might also need to know the host physical address. Since
+ SMM does not have direct access rights to EPT (it is protected by the STM),
+ SMM can input InterruptedEptp to let STM help to walk through it, and output
+ the host physical address.
+
+ @param EAX #STM_API_ADDRESS_LOOKUP (0x00000003)
+ @param EBX Low 32 bits of virtual address of caller allocated
+ STM_ADDRESS_LOOKUP_DESCRIPTOR structure.
+ @param ECX High 32 bits of virtual address of caller allocated
+ STM_ADDRESS_LOOKUP_DESCRIPTOR structure. If Intel64Mode is
+ clear (0), ECX must be zero.
+
+ @retval CF 0
+ No error, EAX set to STM_SUCCESS. PhysicalAddress contains the
+ host physical address determined by walking the interrupted SMM
+ guest's page tables. SmmGuestVirtualAddress contains the SMM
+ guest's virtual mapping of the requested address.
+ @retval CF 1
+ An error occurred, EAX holds relevant error value.
+ @retval EAX #ERROR_STM_SECURITY_VIOLATION
+ The requested page was a protected page.
+ @retval EAX #ERROR_STM_PAGE_NOT_FOUND
+ The requested virtual address did not exist in the page given
+ page table.
+ @retval EAX #ERROR_STM_BAD_CR3
+ The CR3 input was invalid. CR3 values must be from one of the
+ interrupted guest, or from the interrupted guest of another
+ processor.
+ @retval EAX #ERROR_STM_PHYSICAL_OVER_4G
+ The resulting physical address is greater than 4G and no virtual
+ address was supplied. The STM could not determine what address
+ within the SMM guest's virtual address space to do the mapping.
+ STM_ADDRESS_LOOKUP_DESCRIPTOR field PhysicalAddress contains the
+ physical address determined by walking the interrupted
+ environment's page tables.
+ @retval EAX #ERROR_STM_VIRTUAL_SPACE_TOO_SMALL
+ A specific virtual mapping was requested, but
+ SmmGuestVirtualAddress + Length exceeds 4G and the SMI handler
+ is running in 32 bit mode.
+ @retval EAX #ERROR_STM_UNSPECIFIED
+ An unspecified error occurred.
+
+ @note All other registers unmodified.
+**/
+#define STM_API_ADDRESS_LOOKUP 0x00000003
+
+/**
+ STM Lookup Address Range Descriptor for #STM_API_ADDRESS_LOOKUP VMCALL
+**/
+typedef struct {
+ UINT64 InterruptedGuestVirtualAddress;
+ UINT32 Length;
+ UINT64 InterruptedCr3;
+ UINT64 InterruptedEptp;
+ UINT32 MapToSmmGuest:2;
+ UINT32 InterruptedCr4Pae:1;
+ UINT32 InterruptedCr4Pse:1;
+ UINT32 InterruptedIa32eMode:1;
+ UINT32 Reserved1:27;
+ UINT32 Reserved2;
+ UINT64 PhysicalAddress;
+ UINT64 SmmGuestVirtualAddress;
+} STM_ADDRESS_LOOKUP_DESCRIPTOR;
+
+/**
+ Define values for the MapToSmmGuest field of #STM_ADDRESS_LOOKUP_DESCRIPTOR
+ @{
+**/
+#define STM_ADDRESS_LOOKUP_DESCRIPTOR_DO_NOT_MAP 0
+#define STM_ADDRESS_LOOKUP_DESCRIPTOR_ONE_TO_ONE 1
+#define STM_ADDRESS_LOOKUP_DESCRIPTOR_VIRTUAL_ADDRESS_SPECIFIED 3
+/// @}
+
+
+/**
+ When returning from a protection exception (see section 6.2), the SMM guest
+ can instruct the STM to take one of two paths. It can either request a value
+ be logged to the TXT.ERRORCODE register and subsequently reset the machine
+ (indicating it couldn't resolve the problem), or it can request that the STM
+ resume the SMM guest again with the specified register state.
+
+ Unlike other VMCALL interfaces, StmReturnFromProtectionException behaves more
+ like a jump or an IRET instruction than a "call". It does not return directly
+ to the caller, but indirectly to a different location specified on the
+ caller's stack (see section 6.2) or not at all.
+
+ If the SMM guest STM protection exception handler itself causes a protection
+ exception (e.g. a single nested exception), or more than 100 un-nested
+ exceptions occur within the scope of a single SMI event, the STM must write
+ STM_CRASH_PROTECTION_EXCEPTION_FAILURE to the TXT.ERRORCODE register and
+ assert TXT.CMD.SYS_RESET. The reason for these restrictions is to simplify
+ the code requirements while still enabling a reasonable debugging capability.
+
+ @param EAX #STM_API_RETURN_FROM_PROTECTION_EXCEPTION (0x00000004)
+ @param EBX If 0, resume SMM guest using register state found on exception
+ stack. If in range 0x01..0x0F, EBX contains a BIOS error code
+ which the STM must record in the TXT.ERRORCODE register and
+ subsequently reset the system via TXT.CMD.SYS_RESET. The value
+ of the TXT.ERRORCODE register is calculated as follows:
+
+ TXT.ERRORCODE = (EBX & 0x0F) | STM_CRASH_BIOS_PANIC
+
+ Values 0x10..0xFFFFFFFF are reserved, do not use.
+
+**/
+#define STM_API_RETURN_FROM_PROTECTION_EXCEPTION 0x00000004
+
+
+/**
+ VMCALL API Numbers
+ API number convention: MLE facing VMCALL interfaces have bit 16 set.
+
+ The STM configuration lifecycle is as follows:
+ 1. SENTER->SINIT->MLE: MLE begins execution with SMI disabled (masked).
+ 2. MLE invokes #STM_API_INITIALIZE_PROTECTION VMCALL to prepare STM for
+ setup of initial protection profile. This is done on a single CPU and
+ has global effect.
+ 3. MLE invokes #STM_API_PROTECT_RESOURCE VMCALL to define the initial
+ protection profile. The protection profile is global across all CPUs.
+ 4. MLE invokes #STM_API_START VMCALL to enable the STM to begin receiving
+ SMI events. This must be done on every logical CPU.
+ 5. MLE may invoke #STM_API_PROTECT_RESOURCE VMCALL or
+ #STM_API_UNPROTECT_RESOURCE VMCALL during runtime as many times as
+ necessary.
+ 6. MLE invokes #STM_API_STOP VMCALL to disable the STM. SMI is again masked
+ following #STM_API_STOP VMCALL.
+**/
+
+/**
+ StartStmVmcall() is used to configure an STM that is present in MSEG. SMIs
+ should remain disabled from the invocation of GETSEC[SENTER] until they are
+ re-enabled by StartStmVMCALL(). When StartStmVMCALL() returns, SMI is
+ enabled and the STM has been started and is active. Prior to invoking
+ StartStmVMCALL(), the MLE root should first invoke
+ InitializeProtectionVMCALL() followed by as many iterations of
+ ProtectResourceVMCALL() as necessary to establish the initial protection
+ profile. StartStmVmcall() must be invoked on all processor threads.
+
+ @param EAX #STM_API_START (0x00010001)
+ @param EDX STM configuration options. These provide the MLE with the
+ ability to pass configuration parameters to the STM.
+
+ @retval CF 0
+ No error, EAX set to STM_SUCCESS. The STM has been configured
+ and is now active and the guarding all requested resources.
+ @retval CF 1
+ An error occurred, EAX holds relevant error value.
+ @retval EAX #ERROR_STM_ALREADY_STARTED
+ The STM is already configured and active. STM remains active and
+ guarding previously enabled resource list.
+ @retval EAX #ERROR_STM_WITHOUT_SMX_UNSUPPORTED
+ The StartStmVMCALL() was invoked from VMX root mode, but outside
+ of SMX. This error code indicates the STM or platform does not
+ support the STM outside of SMX. The SMI handler remains active
+ and operates in legacy mode. See Appendix C
+ @retval EAX #ERROR_STM_UNSUPPORTED_MSR_BIT
+ The CPU doesn't support the MSR bit. The STM is not active.
+ @retval EAX #ERROR_STM_UNSPECIFIED
+ An unspecified error occurred.
+
+ @note All other registers unmodified.
+**/
+#define STM_API_START (BIT16 | 1)
+
+/**
+ Bit values for EDX input parameter to #STM_API_START VMCALL
+ @{
+**/
+#define STM_CONFIG_SMI_UNBLOCKING_BY_VMX_OFF BIT0
+/// @}
+
+
+/**
+ The StopStmVMCALL() is invoked by the MLE to teardown an active STM. This is
+ normally done as part of a full teardown of the SMX environment when the
+ system is being shut down. At the time the call is invoked, SMI is enabled
+ and the STM is active. When the call returns, the STM has been stopped and
+ all STM context is discarded and SMI is disabled.
+
+ @param EAX #STM_API_STOP (0x00010002)
+
+ @retval CF 0
+ No error, EAX set to STM_SUCCESS. The STM has been stopped and
+ is no longer processing SMI events. SMI is blocked.
+ @retval CF 1
+ An error occurred, EAX holds relevant error value.
+ @retval EAX #ERROR_STM_STOPPED
+ The STM was not active.
+ @retval EAX #ERROR_STM_UNSPECIFIED
+ An unspecified error occurred.
+
+ @note All other registers unmodified.
+**/
+#define STM_API_STOP (BIT16 | 2)
+
+
+/**
+ The ProtectResourceVMCALL() is invoked by the MLE root to request protection
+ of specific resources. The request is defined by a STM_RESOURCE_LIST, which
+ may contain more than one resource descriptor. Each resource descriptor is
+ processed separately by the STM. Whether or not protection for any specific
+ resource is granted is returned by the STM via the ReturnStatus bit in the
+ associated STM_RSC_DESC_HEADER.
+
+ @param EAX #STM_API_PROTECT_RESOURCE (0x00010003)
+ @param EBX Low 32 bits of physical address of caller allocated
+ STM_RESOURCE_LIST. Bits 11:0 are ignored and assumed to be zero,
+ making the buffer 4K aligned.
+ @param ECX High 32 bits of physical address of caller allocated
+ STM_RESOURCE_LIST.
+
+ @note All fields of STM_RESOURCE_LIST are inputs only, except for the
+ ReturnStatus bit. On input, the ReturnStatus bit must be clear. On
+ return, the ReturnStatus bit is set for each resource request granted,
+ and clear for each resource request denied. There are no other fields
+ modified by ProtectResourceVMCALL(). The STM_RESOURCE_LIST must be
+ contained entirely within a single 4K page.
+
+ @retval CF 0
+ No error, EAX set to STM_SUCCESS. The STM has successfully
+ merged the entire protection request into the active protection
+ profile. There is therefore no need to check the ReturnStatus
+ bits in the STM_RESOURCE_LIST.
+ @retval CF 1
+ An error occurred, EAX holds relevant error value.
+ @retval EAX #ERROR_STM_UNPROTECTABLE_RESOURCE
+ At least one of the requested resource protections intersects a
+ BIOS required resource. Therefore, the caller must walk through
+ the STM_RESOURCE_LIST to determine which of the requested
+ resources was not granted protection. The entire list must be
+ traversed since there may be multiple failures.
+ @retval EAX #ERROR_STM_MALFORMED_RESOURCE_LIST
+ The resource list could not be parsed correctly, or did not
+ terminate before crossing a 4K page boundary. The caller must
+ walk through the STM_RESOURCE_LIST to determine which of the
+ requested resources was not granted protection. The entire list
+ must be traversed since there may be multiple failures.
+ @retval EAX #ERROR_STM_OUT_OF_RESOURCES
+ The STM has encountered an internal error and cannot complete
+ the request.
+ @retval EAX #ERROR_STM_UNSPECIFIED
+ An unspecified error occurred.
+
+ @note All other registers unmodified.
+**/
+#define STM_API_PROTECT_RESOURCE (BIT16 | 3)
+
+
+/**
+ The UnProtectResourceVMCALL() is invoked by the MLE root to request that the
+ STM allow the SMI handler access to the specified resources.
+
+ @param EAX #STM_API_UNPROTECT_RESOURCE (0x00010004)
+ @param EBX Low 32 bits of physical address of caller allocated
+ STM_RESOURCE_LIST. Bits 11:0 are ignored and assumed to be zero,
+ making the buffer 4K aligned.
+ @param ECX High 32 bits of physical address of caller allocated
+ STM_RESOURCE_LIST.
+
+ @note All fields of STM_RESOURCE_LIST are inputs only, except for the
+ ReturnStatus bit. On input, the ReturnStatus bit must be clear. On
+ return, the ReturnStatus bit is set for each resource processed. For
+ a properly formed STM_RESOURCE_LIST, this should be all resources
+ listed. There are no other fields modified by
+ UnProtectResourceVMCALL(). The STM_RESOURCE_LIST must be contained
+ entirely within a single 4K page.
+
+ @retval CF 0
+ No error, EAX set to STM_SUCCESS. The requested resources are
+ not being guarded by the STM.
+ @retval CF 1
+ An error occurred, EAX holds relevant error value.
+ @retval EAX #ERROR_STM_MALFORMED_RESOURCE_LIST
+ The resource list could not be parsed correctly, or did not
+ terminate before crossing a 4K page boundary. The caller must
+ walk through the STM_RESOURCE_LIST to determine which of the
+ requested resources were not able to be unprotected. The entire
+ list must be traversed since there may be multiple failures.
+ @retval EAX #ERROR_STM_UNSPECIFIED
+ An unspecified error occurred.
+
+ @note All other registers unmodified.
+**/
+#define STM_API_UNPROTECT_RESOURCE (BIT16 | 4)
+
+
+/**
+ The GetBiosResourcesVMCALL() is invoked by the MLE root to request the list
+ of BIOS required resources from the STM.
+
+ @param EAX #STM_API_GET_BIOS_RESOURCES (0x00010005)
+ @param EBX Low 32 bits of physical address of caller allocated destination
+ buffer. Bits 11:0 are ignored and assumed to be zero, making the
+ buffer 4K aligned.
+ @param ECX High 32 bits of physical address of caller allocated destination
+ buffer.
+ @param EDX Indicates which page of the BIOS resource list to copy into the
+ destination buffer. The first page is indicated by 0, the second
+ page by 1, etc.
+
+ @retval CF 0
+ No error, EAX set to STM_SUCCESS. The destination buffer
+ contains the BIOS required resources. If the page retrieved is
+ the last page, EDX will be cleared to 0. If there are more pages
+ to retrieve, EDX is incremented to the next page index. Calling
+ software should iterate on GetBiosResourcesVMCALL() until EDX is
+ returned cleared to 0.
+ @retval CF 1
+ An error occurred, EAX holds relevant error value.
+ @retval EAX #ERROR_STM_PAGE_NOT_FOUND
+ The page index supplied in EDX input was out of range.
+ @retval EAX #ERROR_STM_UNSPECIFIED
+ An unspecified error occurred.
+ @retval EDX Page index of next page to read. A return of EDX=0 signifies
+ that the entire list has been read.
+ @note EDX is both an input and an output register.
+
+ @note All other registers unmodified.
+**/
+#define STM_API_GET_BIOS_RESOURCES (BIT16 | 5)
+
+
+/**
+ The ManageVmcsDatabaseVMCALL() is invoked by the MLE root to add or remove an
+ MLE guest (including the MLE root) from the list of protected domains.
+
+ @param EAX #STM_API_MANAGE_VMCS_DATABASE (0x00010006)
+ @param EBX Low 32 bits of physical address of caller allocated
+ STM_VMCS_DATABASE_REQUEST. Bits 11:0 are ignored and assumed to
+ be zero, making the buffer 4K aligned.
+ @param ECX High 32 bits of physical address of caller allocated
+ STM_VMCS_DATABASE_REQUEST.
+
+ @note All fields of STM_VMCS_DATABASE_REQUEST are inputs only. They are not
+ modified by ManageVmcsDatabaseVMCALL().
+
+ @retval CF 0
+ No error, EAX set to STM_SUCCESS.
+ @retval CF 1
+ An error occurred, EAX holds relevant error value.
+ @retval EAX #ERROR_STM_INVALID_VMCS
+ Indicates a request to remove a VMCS from the database was made,
+ but the referenced VMCS was not found in the database.
+ @retval EAX #ERROR_STM_VMCS_PRESENT
+ Indicates a request to add a VMCS to the database was made, but
+ the referenced VMCS was already present in the database.
+ @retval EAX #ERROR_INVALID_PARAMETER
+ Indicates non-zero reserved field.
+ @retval EAX #ERROR_STM_UNSPECIFIED
+ An unspecified error occurred
+
+ @note All other registers unmodified.
+**/
+#define STM_API_MANAGE_VMCS_DATABASE (BIT16 | 6)
+
+/**
+ STM VMCS Database Request for #STM_API_MANAGE_VMCS_DATABASE VMCALL
+**/
+typedef struct {
+ ///
+ /// bits 11:0 are reserved and must be 0
+ ///
+ UINT64 VmcsPhysPointer;
+ UINT32 DomainType :4;
+ UINT32 XStatePolicy :2;
+ UINT32 DegradationPolicy :4;
+ ///
+ /// Must be 0
+ ///
+ UINT32 Reserved1 :22;
+ UINT32 AddOrRemove;
+} STM_VMCS_DATABASE_REQUEST;
+
+/**
+ Values for the DomainType field of #STM_VMCS_DATABASE_REQUEST
+ @{
+**/
+#define DOMAIN_UNPROTECTED 0
+#define DOMAIN_DISALLOWED_IO_OUT BIT0
+#define DOMAIN_DISALLOWED_IO_IN BIT1
+#define DOMAIN_INTEGRITY BIT2
+#define DOMAIN_CONFIDENTIALITY BIT3
+#define DOMAIN_INTEGRITY_PROT_OUT_IN (DOMAIN_INTEGRITY)
+#define DOMAIN_FULLY_PROT_OUT_IN (DOMAIN_CONFIDENTIALITY | DOMAIN_INTEGRITY)
+#define DOMAIN_FULLY_PROT (DOMAIN_FULLY_PROT_OUT_IN | DOMAIN_DISALLOWED_IO_IN | DOMAIN_DISALLOWED_IO_OUT)
+/// @}
+
+/**
+ Values for the XStatePolicy field of #STM_VMCS_DATABASE_REQUEST
+ @{
+**/
+#define XSTATE_READWRITE 0x00
+#define XSTATE_READONLY 0x01
+#define XSTATE_SCRUB 0x03
+/// @}
+
+/**
+ Values for the AddOrRemove field of #STM_VMCS_DATABASE_REQUEST
+ @{
+**/
+#define STM_VMCS_DATABASE_REQUEST_ADD 1
+#define STM_VMCS_DATABASE_REQUEST_REMOVE 0
+/// @}
+
+
+/**
+ InitializeProtectionVMCALL() prepares the STM for setup of the initial
+ protection profile which is subsequently communicated via one or more
+ invocations of ProtectResourceVMCALL(), prior to invoking StartStmVMCALL().
+ It is only necessary to invoke InitializeProtectionVMCALL() on one processor
+ thread. InitializeProtectionVMCALL() does not alter whether SMIs are masked
+ or unmasked. The STM should return back to the MLE with "Blocking by SMI" set
+ to 1 in the GUEST_INTERRUPTIBILITY field for the VMCS the STM created for the
+ MLE guest.
+
+ @param EAX #STM_API_INITIALIZE_PROTECTION (0x00010007)
+
+ @retval CF 0
+ No error, EAX set to STM_SUCCESS, EBX bits set to indicate STM
+ capabilities as defined below. The STM has set up an empty
+ protection profile, except for the resources that it sets up to
+ protect itself. The STM must not allow the SMI handler to map
+ any pages from the MSEG Base to the top of TSEG. The STM must
+ also not allow SMI handler access to those MSRs which the STM
+ requires for its own protection.
+ @retval CF 1
+ An error occurred, EAX holds relevant error value.
+ @retval EAX #ERROR_STM_ALREADY_STARTED
+ The STM is already configured and active. The STM remains active
+ and guarding the previously enabled resource list.
+ @retval EAX #ERROR_STM_UNPROTECTABLE
+ The STM determines that based on the platform configuration, the
+ STM is unable to protect itself. For example, the BIOS required
+ resource list contains memory pages in MSEG.
+ @retval EAX #ERROR_STM_UNSPECIFIED
+ An unspecified error occurred.
+
+ @note All other registers unmodified.
+**/
+#define STM_API_INITIALIZE_PROTECTION (BIT16 | 7)
+
+/**
+ Byte granular support bits returned in EBX from #STM_API_INITIALIZE_PROTECTION
+ @{
+**/
+#define STM_RSC_BGI BIT1
+#define STM_RSC_BGM BIT2
+#define STM_RSC_MSR BIT3
+/// @}
+
+
+/**
+ The ManageEventLogVMCALL() is invoked by the MLE root to control the logging
+ feature. It consists of several sub-functions to facilitate establishment of
+ the log itself, configuring what events will be logged, and functions to
+ start, stop, and clear the log.
+
+ @param EAX #STM_API_MANAGE_EVENT_LOG (0x00010008)
+ @param EBX Low 32 bits of physical address of caller allocated
+ STM_EVENT_LOG_MANAGEMENT_REQUEST. Bits 11:0 are ignored and
+ assumed to be zero, making the buffer 4K aligned.
+ @param ECX High 32 bits of physical address of caller allocated
+ STM_EVENT_LOG_MANAGEMENT_REQUEST.
+
+ @retval CF=0
+ No error, EAX set to STM_SUCCESS.
+ @retval CF=1
+ An error occurred, EAX holds relevant error value. See subfunction
+ descriptions below for details.
+
+ @note All other registers unmodified.
+**/
+#define STM_API_MANAGE_EVENT_LOG (BIT16 | 8)
+
+///
+/// STM Event Log Management Request for #STM_API_MANAGE_EVENT_LOG VMCALL
+///
+typedef struct {
+ UINT32 SubFunctionIndex;
+ union {
+ struct {
+ UINT32 PageCount;
+ //
+ // number of elements is PageCount
+ //
+ UINT64 Pages[];
+ } LogBuffer;
+ //
+ // bitmap of EVENT_TYPE
+ //
+ UINT32 EventEnableBitmap;
+ } Data;
+} STM_EVENT_LOG_MANAGEMENT_REQUEST;
+
+/**
+ Defines values for the SubFunctionIndex field of
+ #STM_EVENT_LOG_MANAGEMENT_REQUEST
+ @{
+**/
+#define STM_EVENT_LOG_MANAGEMENT_REQUEST_NEW_LOG 1
+#define STM_EVENT_LOG_MANAGEMENT_REQUEST_CONFIGURE_LOG 2
+#define STM_EVENT_LOG_MANAGEMENT_REQUEST_START_LOG 3
+#define STM_EVENT_LOG_MANAGEMENT_REQUEST_STOP_LOG 4
+#define STM_EVENT_LOG_MANAGEMENT_REQUEST_CLEAR_LOG 5
+#define STM_EVENT_LOG_MANAGEMENT_REQUEST_DELETE_LOG 6
+/// @}
+
+/**
+ Log Entry Header
+**/
+typedef struct {
+ UINT32 EventSerialNumber;
+ UINT16 Type;
+ UINT16 Lock :1;
+ UINT16 Valid :1;
+ UINT16 ReadByMle :1;
+ UINT16 Wrapped :1;
+ UINT16 Reserved :12;
+} LOG_ENTRY_HEADER;
+
+/**
+ Enum values for the Type field of #LOG_ENTRY_HEADER
+**/
+typedef enum {
+ EvtLogStarted,
+ EvtLogStopped,
+ EvtLogInvalidParameterDetected,
+ EvtHandledProtectionException,
+ ///
+ /// unhandled protection exceptions result in reset & cannot be logged
+ ///
+ EvtBiosAccessToUnclaimedResource,
+ EvtMleResourceProtectionGranted,
+ EvtMleResourceProtectionDenied,
+ EvtMleResourceUnprotect,
+ EvtMleResourceUnprotectError,
+ EvtMleDomainTypeDegraded,
+ ///
+ /// add more here
+ ///
+ EvtMleMax,
+ ///
+ /// Not used
+ ///
+ EvtInvalid = 0xFFFFFFFF,
+} EVENT_TYPE;
+
+typedef struct {
+ UINT32 Reserved;
+} ENTRY_EVT_LOG_STARTED;
+
+typedef struct {
+ UINT32 Reserved;
+} ENTRY_EVT_LOG_STOPPED;
+
+typedef struct {
+ UINT32 VmcallApiNumber;
+} ENTRY_EVT_LOG_INVALID_PARAM;
+
+typedef struct {
+ STM_RSC Resource;
+} ENTRY_EVT_LOG_HANDLED_PROTECTION_EXCEPTION;
+
+typedef struct {
+ STM_RSC Resource;
+} ENTRY_EVT_BIOS_ACCESS_UNCLAIMED_RSC;
+
+typedef struct {
+ STM_RSC Resource;
+} ENTRY_EVT_MLE_RSC_PROT_GRANTED;
+
+typedef struct {
+ STM_RSC Resource;
+} ENTRY_EVT_MLE_RSC_PROT_DENIED;
+
+typedef struct {
+ STM_RSC Resource;
+} ENTRY_EVT_MLE_RSC_UNPROT;
+
+typedef struct {
+ STM_RSC Resource;
+} ENTRY_EVT_MLE_RSC_UNPROT_ERROR;
+
+typedef struct {
+ UINT64 VmcsPhysPointer;
+ UINT8 ExpectedDomainType;
+ UINT8 DegradedDomainType;
+} ENTRY_EVT_MLE_DOMAIN_TYPE_DEGRADED;
+
+typedef union {
+ ENTRY_EVT_LOG_STARTED Started;
+ ENTRY_EVT_LOG_STOPPED Stopped;
+ ENTRY_EVT_LOG_INVALID_PARAM InvalidParam;
+ ENTRY_EVT_LOG_HANDLED_PROTECTION_EXCEPTION HandledProtectionException;
+ ENTRY_EVT_BIOS_ACCESS_UNCLAIMED_RSC BiosUnclaimedRsc;
+ ENTRY_EVT_MLE_RSC_PROT_GRANTED MleRscProtGranted;
+ ENTRY_EVT_MLE_RSC_PROT_DENIED MleRscProtDenied;
+ ENTRY_EVT_MLE_RSC_UNPROT MleRscUnprot;
+ ENTRY_EVT_MLE_RSC_UNPROT_ERROR MleRscUnprotError;
+ ENTRY_EVT_MLE_DOMAIN_TYPE_DEGRADED MleDomainTypeDegraded;
+} LOG_ENTRY_DATA;
+
+typedef struct {
+ LOG_ENTRY_HEADER Hdr;
+ LOG_ENTRY_DATA Data;
+} STM_LOG_ENTRY;
+
+/**
+ Maximum STM Log Entry Size
+**/
+#define STM_LOG_ENTRY_SIZE 256
+
+
+/**
+ STM Protection Exception Stack Frame Structures
+**/
+
+typedef struct {
+ UINT32 Rdi;
+ UINT32 Rsi;
+ UINT32 Rbp;
+ UINT32 Rdx;
+ UINT32 Rcx;
+ UINT32 Rbx;
+ UINT32 Rax;
+ UINT32 Cr3;
+ UINT32 Cr2;
+ UINT32 Cr0;
+ UINT32 VmcsExitInstructionInfo;
+ UINT32 VmcsExitInstructionLength;
+ UINT64 VmcsExitQualification;
+ ///
+ /// An TXT_SMM_PROTECTION_EXCEPTION_TYPE num value
+ ///
+ UINT32 ErrorCode;
+ UINT32 Rip;
+ UINT32 Cs;
+ UINT32 Rflags;
+ UINT32 Rsp;
+ UINT32 Ss;
+} STM_PROTECTION_EXCEPTION_STACK_FRAME_IA32;
+
+typedef struct {
+ UINT64 R15;
+ UINT64 R14;
+ UINT64 R13;
+ UINT64 R12;
+ UINT64 R11;
+ UINT64 R10;
+ UINT64 R9;
+ UINT64 R8;
+ UINT64 Rdi;
+ UINT64 Rsi;
+ UINT64 Rbp;
+ UINT64 Rdx;
+ UINT64 Rcx;
+ UINT64 Rbx;
+ UINT64 Rax;
+ UINT64 Cr8;
+ UINT64 Cr3;
+ UINT64 Cr2;
+ UINT64 Cr0;
+ UINT64 VmcsExitInstructionInfo;
+ UINT64 VmcsExitInstructionLength;
+ UINT64 VmcsExitQualification;
+ ///
+ /// An TXT_SMM_PROTECTION_EXCEPTION_TYPE num value
+ ///
+ UINT64 ErrorCode;
+ UINT64 Rip;
+ UINT64 Cs;
+ UINT64 Rflags;
+ UINT64 Rsp;
+ UINT64 Ss;
+} STM_PROTECTION_EXCEPTION_STACK_FRAME_X64;
+
+typedef union {
+ STM_PROTECTION_EXCEPTION_STACK_FRAME_IA32 *Ia32StackFrame;
+ STM_PROTECTION_EXCEPTION_STACK_FRAME_X64 *X64StackFrame;
+} STM_PROTECTION_EXCEPTION_STACK_FRAME;
+
+/**
+ Enum values for the ErrorCode field in
+ #STM_PROTECTION_EXCEPTION_STACK_FRAME_IA32 and
+ #STM_PROTECTION_EXCEPTION_STACK_FRAME_X64
+**/
+typedef enum {
+ TxtSmmPageViolation = 1,
+ TxtSmmMsrViolation,
+ TxtSmmRegisterViolation,
+ TxtSmmIoViolation,
+ TxtSmmPciViolation
+} TXT_SMM_PROTECTION_EXCEPTION_TYPE;
+
+/**
+ TXT Pocessor SMM Descriptor (PSD) structures
+**/
+
+typedef struct {
+ UINT64 SpeRip;
+ UINT64 SpeRsp;
+ UINT16 SpeSs;
+ UINT16 PageViolationException:1;
+ UINT16 MsrViolationException:1;
+ UINT16 RegisterViolationException:1;
+ UINT16 IoViolationException:1;
+ UINT16 PciViolationException:1;
+ UINT16 Reserved1:11;
+ UINT32 Reserved2;
+} STM_PROTECTION_EXCEPTION_HANDLER;
+
+typedef struct {
+ UINT8 ExecutionDisableOutsideSmrr:1;
+ UINT8 Intel64Mode:1;
+ UINT8 Cr4Pae : 1;
+ UINT8 Cr4Pse : 1;
+ UINT8 Reserved1 : 4;
+} STM_SMM_ENTRY_STATE;
+
+typedef struct {
+ UINT8 SmramToVmcsRestoreRequired : 1; ///> BIOS restore hint
+ UINT8 ReinitializeVmcsRequired : 1; ///> BIOS request
+ UINT8 Reserved2 : 6;
+} STM_SMM_RESUME_STATE;
+
+typedef struct {
+ UINT8 DomainType : 4; ///> STM input to BIOS on each SMI
+ UINT8 XStatePolicy : 2; ///> STM input to BIOS on each SMI
+ UINT8 EptEnabled : 1;
+ UINT8 Reserved3 : 1;
+} STM_SMM_STATE;
+
+#define TXT_SMM_PSD_OFFSET 0xfb00
+#define TXT_PROCESSOR_SMM_DESCRIPTOR_SIGNATURE SIGNATURE_64('T', 'X', 'T', 'P', 'S', 'S', 'I', 'G')
+#define TXT_PROCESSOR_SMM_DESCRIPTOR_VERSION_MAJOR 1
+#define TXT_PROCESSOR_SMM_DESCRIPTOR_VERSION_MINOR 0
+
+typedef struct {
+ UINT64 Signature;
+ UINT16 Size;
+ UINT8 SmmDescriptorVerMajor;
+ UINT8 SmmDescriptorVerMinor;
+ UINT32 LocalApicId;
+ STM_SMM_ENTRY_STATE SmmEntryState;
+ STM_SMM_RESUME_STATE SmmResumeState;
+ STM_SMM_STATE StmSmmState;
+ UINT8 Reserved4;
+ UINT16 SmmCs;
+ UINT16 SmmDs;
+ UINT16 SmmSs;
+ UINT16 SmmOtherSegment;
+ UINT16 SmmTr;
+ UINT16 Reserved5;
+ UINT64 SmmCr3;
+ UINT64 SmmStmSetupRip;
+ UINT64 SmmStmTeardownRip;
+ UINT64 SmmSmiHandlerRip;
+ UINT64 SmmSmiHandlerRsp;
+ UINT64 SmmGdtPtr;
+ UINT32 SmmGdtSize;
+ UINT32 RequiredStmSmmRevId;
+ STM_PROTECTION_EXCEPTION_HANDLER StmProtectionExceptionHandler;
+ UINT64 Reserved6;
+ UINT64 BiosHwResourceRequirementsPtr;
+ // extend area
+ UINT64 AcpiRsdp;
+ UINT8 PhysicalAddressBits;
+} TXT_PROCESSOR_SMM_DESCRIPTOR;
+
+#pragma pack ()
+
+#endif
diff --git a/UefiCpuPkg/Include/Register/StmResourceDescriptor.h b/UefiCpuPkg/Include/Register/StmResourceDescriptor.h
new file mode 100644
index 0000000..1518462
--- /dev/null
+++ b/UefiCpuPkg/Include/Register/StmResourceDescriptor.h
@@ -0,0 +1,228 @@
+/** @file
+ STM Resource Descriptor
+
+ Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ @par Specification Reference:
+ SMI Transfer Monitor (STM) User Guide Revision 1.00
+
+**/
+
+#ifndef _STM_RESOURCE_DESCRIPTOR_H_
+#define _STM_RESOURCE_DESCRIPTOR_H_
+
+#pragma pack (1)
+
+/**
+ STM Resource Descriptor Header
+**/
+typedef struct {
+ UINT32 RscType;
+ UINT16 Length;
+ UINT16 ReturnStatus:1;
+ UINT16 Reserved:14;
+ UINT16 IgnoreResource:1;
+} STM_RSC_DESC_HEADER;
+
+/**
+ Define values for the RscType field of #STM_RSC_DESC_HEADER
+ @{
+**/
+#define END_OF_RESOURCES 0
+#define MEM_RANGE 1
+#define IO_RANGE 2
+#define MMIO_RANGE 3
+#define MACHINE_SPECIFIC_REG 4
+#define PCI_CFG_RANGE 5
+#define TRAPPED_IO_RANGE 6
+#define ALL_RESOURCES 7
+#define REGISTER_VIOLATION 8
+#define MAX_DESC_TYPE 8
+/// @}
+
+/**
+ STM Resource End Descriptor
+**/
+typedef struct {
+ STM_RSC_DESC_HEADER Hdr;
+ UINT64 ResourceListContinuation;
+} STM_RSC_END;
+
+/**
+ STM Resource Memory Descriptor
+**/
+typedef struct {
+ STM_RSC_DESC_HEADER Hdr;
+ UINT64 Base;
+ UINT64 Length;
+ UINT32 RWXAttributes:3;
+ UINT32 Reserved:29;
+ UINT32 Reserved_2;
+} STM_RSC_MEM_DESC;
+
+/**
+ Define values for the RWXAttributes field of #STM_RSC_MEM_DESC
+ @{
+**/
+#define STM_RSC_MEM_R 0x1
+#define STM_RSC_MEM_W 0x2
+#define STM_RSC_MEM_X 0x4
+/// @}
+
+/**
+ STM Resource I/O Descriptor
+**/
+typedef struct {
+ STM_RSC_DESC_HEADER Hdr;
+ UINT16 Base;
+ UINT16 Length;
+ UINT32 Reserved;
+} STM_RSC_IO_DESC;
+
+/**
+ STM Resource MMIO Descriptor
+**/
+typedef struct {
+ STM_RSC_DESC_HEADER Hdr;
+ UINT64 Base;
+ UINT64 Length;
+ UINT32 RWXAttributes:3;
+ UINT32 Reserved:29;
+ UINT32 Reserved_2;
+} STM_RSC_MMIO_DESC;
+
+/**
+ Define values for the RWXAttributes field of #STM_RSC_MMIO_DESC
+ @{
+**/
+#define STM_RSC_MMIO_R 0x1
+#define STM_RSC_MMIO_W 0x2
+#define STM_RSC_MMIO_X 0x4
+/// @}
+
+/**
+ STM Resource MSR Descriptor
+**/
+typedef struct {
+ STM_RSC_DESC_HEADER Hdr;
+ UINT32 MsrIndex;
+ UINT32 KernelModeProcessing:1;
+ UINT32 Reserved:31;
+ UINT64 ReadMask;
+ UINT64 WriteMask;
+} STM_RSC_MSR_DESC;
+
+/**
+ STM PCI Device Path node used for the PciDevicePath field of
+ #STM_RSC_PCI_CFG_DESC
+**/
+typedef struct {
+ ///
+ /// Must be 1, indicating Hardware Device Path
+ ///
+ UINT8 Type;
+ ///
+ /// Must be 1, indicating PCI
+ ///
+ UINT8 Subtype;
+ ///
+ /// sizeof(STM_PCI_DEVICE_PATH_NODE) which is 6
+ ///
+ UINT16 Length;
+ UINT8 PciFunction;
+ UINT8 PciDevice;
+} STM_PCI_DEVICE_PATH_NODE;
+
+/**
+ STM Resource PCI Configuration Descriptor
+**/
+typedef struct {
+ STM_RSC_DESC_HEADER Hdr;
+ UINT16 RWAttributes:2;
+ UINT16 Reserved:14;
+ UINT16 Base;
+ UINT16 Length;
+ UINT8 OriginatingBusNumber;
+ UINT8 LastNodeIndex;
+ STM_PCI_DEVICE_PATH_NODE PciDevicePath[1];
+//STM_PCI_DEVICE_PATH_NODE PciDevicePath[LastNodeIndex + 1];
+} STM_RSC_PCI_CFG_DESC;
+
+/**
+ Define values for the RWAttributes field of #STM_RSC_PCI_CFG_DESC
+ @{
+**/
+#define STM_RSC_PCI_CFG_R 0x1
+#define STM_RSC_PCI_CFG_W 0x2
+/// @}
+
+/**
+ STM Resource Trapped I/O Descriptor
+**/
+typedef struct {
+ STM_RSC_DESC_HEADER Hdr;
+ UINT16 Base;
+ UINT16 Length;
+ UINT16 In:1;
+ UINT16 Out:1;
+ UINT16 Api:1;
+ UINT16 Reserved1:13;
+ UINT16 Reserved2;
+} STM_RSC_TRAPPED_IO_DESC;
+
+/**
+ STM Resource All Descriptor
+**/
+typedef struct {
+ STM_RSC_DESC_HEADER Hdr;
+} STM_RSC_ALL_RESOURCES_DESC;
+
+/**
+ STM Register Volation Descriptor
+**/
+typedef struct {
+ STM_RSC_DESC_HEADER Hdr;
+ UINT32 RegisterType;
+ UINT32 Reserved;
+ UINT64 ReadMask;
+ UINT64 WriteMask;
+} STM_REGISTER_VIOLATION_DESC;
+
+/**
+ Enum values for the RWAttributes field of #STM_REGISTER_VIOLATION_DESC
+**/
+typedef enum {
+ StmRegisterCr0,
+ StmRegisterCr2,
+ StmRegisterCr3,
+ StmRegisterCr4,
+ StmRegisterCr8,
+ StmRegisterMax,
+} STM_REGISTER_VIOLATION_TYPE;
+
+/**
+ Union of all STM resource types
+**/
+typedef union {
+ STM_RSC_DESC_HEADER Header;
+ STM_RSC_END End;
+ STM_RSC_MEM_DESC Mem;
+ STM_RSC_IO_DESC Io;
+ STM_RSC_MMIO_DESC Mmio;
+ STM_RSC_MSR_DESC Msr;
+ STM_RSC_PCI_CFG_DESC PciCfg;
+ STM_RSC_TRAPPED_IO_DESC TrappedIo;
+ STM_RSC_ALL_RESOURCES_DESC All;
+ STM_REGISTER_VIOLATION_DESC RegisterViolation;
+} STM_RSC;
+
+#pragma pack ()
+
+#endif
diff --git a/UefiCpuPkg/Include/Register/StmStatusCode.h b/UefiCpuPkg/Include/Register/StmStatusCode.h
new file mode 100644
index 0000000..f1fcb8b6
--- /dev/null
+++ b/UefiCpuPkg/Include/Register/StmStatusCode.h
@@ -0,0 +1,78 @@
+/** @file
+ STM Status Codes
+
+ Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ @par Specification Reference:
+ SMI Transfer Monitor (STM) User Guide Revision 1.00
+
+**/
+
+#ifndef _STM_STATUS_CODE_H_
+#define _STM_STATUS_CODE_H_
+
+/**
+ STM Status Codes
+**/
+typedef UINT32 STM_STATUS;
+
+/**
+ Success code have BIT31 clear.
+ All error codes have BIT31 set.
+ STM errors have BIT16 set.
+ SMM errors have BIT17 set
+ Errors that apply to both STM and SMM have bits BIT15, BT16, and BIT17 set.
+ STM TXT.ERRORCODE codes have BIT30 set.
+ @{
+**/
+#define STM_SUCCESS 0x00000000
+#define SMM_SUCCESS 0x00000000
+#define ERROR_STM_SECURITY_VIOLATION (BIT31 | BIT16 | 0x0001)
+#define ERROR_STM_CACHE_TYPE_NOT_SUPPORTED (BIT31 | BIT16 | 0x0002)
+#define ERROR_STM_PAGE_NOT_FOUND (BIT31 | BIT16 | 0x0003)
+#define ERROR_STM_BAD_CR3 (BIT31 | BIT16 | 0x0004)
+#define ERROR_STM_PHYSICAL_OVER_4G (BIT31 | BIT16 | 0x0005)
+#define ERROR_STM_VIRTUAL_SPACE_TOO_SMALL (BIT31 | BIT16 | 0x0006)
+#define ERROR_STM_UNPROTECTABLE_RESOURCE (BIT31 | BIT16 | 0x0007)
+#define ERROR_STM_ALREADY_STARTED (BIT31 | BIT16 | 0x0008)
+#define ERROR_STM_WITHOUT_SMX_UNSUPPORTED (BIT31 | BIT16 | 0x0009)
+#define ERROR_STM_STOPPED (BIT31 | BIT16 | 0x000A)
+#define ERROR_STM_BUFFER_TOO_SMALL (BIT31 | BIT16 | 0x000B)
+#define ERROR_STM_INVALID_VMCS_DATABASE (BIT31 | BIT16 | 0x000C)
+#define ERROR_STM_MALFORMED_RESOURCE_LIST (BIT31 | BIT16 | 0x000D)
+#define ERROR_STM_INVALID_PAGECOUNT (BIT31 | BIT16 | 0x000E)
+#define ERROR_STM_LOG_ALLOCATED (BIT31 | BIT16 | 0x000F)
+#define ERROR_STM_LOG_NOT_ALLOCATED (BIT31 | BIT16 | 0x0010)
+#define ERROR_STM_LOG_NOT_STOPPED (BIT31 | BIT16 | 0x0011)
+#define ERROR_STM_LOG_NOT_STARTED (BIT31 | BIT16 | 0x0012)
+#define ERROR_STM_RESERVED_BIT_SET (BIT31 | BIT16 | 0x0013)
+#define ERROR_STM_NO_EVENTS_ENABLED (BIT31 | BIT16 | 0x0014)
+#define ERROR_STM_OUT_OF_RESOURCES (BIT31 | BIT16 | 0x0015)
+#define ERROR_STM_FUNCTION_NOT_SUPPORTED (BIT31 | BIT16 | 0x0016)
+#define ERROR_STM_UNPROTECTABLE (BIT31 | BIT16 | 0x0017)
+#define ERROR_STM_UNSUPPORTED_MSR_BIT (BIT31 | BIT16 | 0x0018)
+#define ERROR_STM_UNSPECIFIED (BIT31 | BIT16 | 0xFFFF)
+#define ERROR_SMM_BAD_BUFFER (BIT31 | BIT17 | 0x0001)
+#define ERROR_SMM_INVALID_RSC (BIT31 | BIT17 | 0x0004)
+#define ERROR_SMM_INVALID_BUFFER_SIZE (BIT31 | BIT17 | 0x0005)
+#define ERROR_SMM_BUFFER_TOO_SHORT (BIT31 | BIT17 | 0x0006)
+#define ERROR_SMM_INVALID_LIST (BIT31 | BIT17 | 0x0007)
+#define ERROR_SMM_OUT_OF_MEMORY (BIT31 | BIT17 | 0x0008)
+#define ERROR_SMM_AFTER_INIT (BIT31 | BIT17 | 0x0009)
+#define ERROR_SMM_UNSPECIFIED (BIT31 | BIT17 | 0xFFFF)
+#define ERROR_INVALID_API (BIT31 | BIT17 | BIT16 | BIT15 | 0x0001)
+#define ERROR_INVALID_PARAMETER (BIT31 | BIT17 | BIT16 | BIT15 | 0x0002)
+#define STM_CRASH_PROTECTION_EXCEPTION (BIT31 | BIT30 | 0xF001)
+#define STM_CRASH_PROTECTION_EXCEPTION_FAILURE (BIT31 | BIT30 | 0xF002)
+#define STM_CRASH_DOMAIN_DEGRADATION_FAILURE (BIT31 | BIT30 | 0xF003)
+#define STM_CRASH_BIOS_PANIC (BIT31 | BIT30 | 0xE000)
+/// @}
+
+#endif
diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec
index ca56039..c37b4d5 100644
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -60,6 +60,7 @@
[Guids]
gUefiCpuPkgTokenSpaceGuid = { 0xac05bf33, 0x995a, 0x4ed4, { 0xaa, 0xb8, 0xef, 0x7a, 0xe8, 0xf, 0x5c, 0xb0 }}
+ gMsegSmramGuid = { 0x5802bce4, 0xeeee, 0x4e33, { 0xa1, 0x30, 0xeb, 0xad, 0x27, 0xf0, 0xe4, 0x39 }}
## Include/Guid/MicrocodeFmp.h
gMicrocodeFmpImageTypeIdGuid = { 0x96d4fdcd, 0x1502, 0x424d, { 0x9d, 0x4c, 0x9b, 0x12, 0xd2, 0xdc, 0xae, 0x5c } }
@@ -68,6 +69,9 @@
## Include/Protocol/SmmCpuService.h
gEfiSmmCpuServiceProtocolGuid = { 0x1d202cab, 0xc8ab, 0x4d5c, { 0x94, 0xf7, 0x3c, 0xfc, 0xc0, 0xd3, 0xd3, 0x35 }}
+ ## Include/Protocol/SmMonitorInit.h
+ gEfiSmMonitorInitProtocolGuid = { 0x228f344d, 0xb3de, 0x43bb, { 0xa4, 0xd7, 0xea, 0x20, 0xb, 0x1b, 0x14, 0x82 }}
+
#
# [Error.gUefiCpuPkgTokenSpaceGuid]
# 0x80000001 | Invalid value provided.
@@ -169,6 +173,14 @@
# @Prompt Number of reserved variable MTRRs.
gUefiCpuPkgTokenSpaceGuid.PcdCpuNumberOfReservedVariableMtrrs|0x2|UINT32|0x00000015
+ ## Specifies buffer size in bytes for STM exception stack. The value should be a multiple of 4KB.
+ # @Prompt STM exception stack size.
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmStmExceptionStackSize|0x1000|UINT32|0x32132111
+
+ ## Specifies buffer size in bytes of MSEG. The value should be a multiple of 4KB.
+ # @Prompt MSEG size.
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuMsegSize|0x200000|UINT32|0x32132112
+
[PcdsFixedAtBuild, PcdsPatchableInModule, PcdsDynamic, PcdsDynamicEx]
## Specifies max supported number of Logical Processors.
# @Prompt Configure max supported number of Logical Processors
