[mirror_edk2.git] / MdePkg / Include / Pi / PiSmmCis.h

/** @file\r
  Common definitions in the Platform Initialization Specification version 1.2\r
  VOLUME 4 System Management Mode Core Interface version.\r
\r
  Copyright (c) 2009, Intel Corporation\r
  All rights reserved. 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
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef _PI_SMMCIS_H_\r
#define _PI_SMMCIS_H_\r
\r
#include <Pi/PiMultiPhase.h>\r
#include <Protocol/SmmCpuIo.h>\r
\r
///\r
/// Note:\r
///   To avoid name conflict between PI and Framework SMM spec, the following names defined\r
///   in PI 1.2 SMM spec are renamed. These renamings are not yet in a public PI spec and errta.\r
///\r
///   EFI_SMM_SYSTEM_TABLE                -> EFI_SMM_SYSTEM_TABLE2\r
///   EFI_SMM_SYSTEM_TABLE_REVISION       -> EFI_SMM_SYSTEM_TABLE2_REVISION\r
///   EFI_SMM_INSTALL_CONFIGURATION_TABLE -> EFI_SMM_INSTALL_CONFIGURATION_TABLE2\r
///\r
\r
typedef struct _EFI_SMM_SYSTEM_TABLE2  EFI_SMM_SYSTEM_TABLE2;\r
\r
///\r
/// The System Management System Table (SMST) signature\r
///\r
#define SMM_SMST_SIGNATURE            SIGNATURE_32 ('S', 'M', 'S', 'T')\r
///\r
/// The System Management System Table (SMST) revision is 1.0\r
///\r
#define EFI_SMM_SYSTEM_TABLE2_REVISION ((1 << 16) | (0x00))\r
\r
/**\r
  Adds, updates, or removes a configuration table entry from the System Management System Table.\r
\r
  The SmmInstallConfigurationTable() function is used to maintain the list\r
  of configuration tables that are stored in the System Management System\r
  Table.  The list is stored as an array of (GUID, Pointer) pairs.  The list\r
  must be allocated from pool memory with PoolType set to EfiRuntimeServicesData.\r
\r
  @param[in] SystemTable         A pointer to the SMM System Table (SMST).\r
  @param[in] Guid                A pointer to the GUID for the entry to add, update, or remove.\r
  @param[in] Table               A pointer to the buffer of the table to add.\r
  @param[in] TableSize           The size of the table to install.\r
\r
  @retval EFI_SUCCESS            The (Guid, Table) pair was added, updated, or removed.\r
  @retval EFI_INVALID_PARAMETER  Guid is not valid.\r
  @retval EFI_NOT_FOUND          An attempt was made to delete a non-existent entry.\r
  @retval EFI_OUT_OF_RESOURCES   There is not enough memory available to complete the operation.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SMM_INSTALL_CONFIGURATION_TABLE2)(\r
  IN CONST EFI_SMM_SYSTEM_TABLE2  *SystemTable,\r
  IN CONST EFI_GUID               *Guid,\r
  IN VOID                         *Table,\r
  IN UINTN                        TableSize\r
  );\r
\r
/**\r
  The SmmStartupThisAp() lets the caller to get one distinct application processor\r
  (AP) in the enabled processor pool to execute a caller-provided code stream\r
  while in SMM. It runs the given code on this processor and reports the status.\r
  It must be noted that the supplied code stream will be run only on an enabled \r
  processor which has also entered SMM. \r
\r
  @param[in]     Procedure       A pointer to the code stream to be run on the designated AP of the system.\r
  @param[in]     CpuNumber       The zero-based index of the processor number of the AP on which the code stream is supposed to run.\r
  @param[in,out] ProcArguments   Allow the caller to pass a list of parameters to the code that is run by the AP.\r
\r
  @retval EFI_SUCCESS            The call was successful and the return parameters are valid.\r
  @retval EFI_INVALID_PARAMETER  The input arguments are out of range.\r
  @retval EFI_INVALID_PARAMETER  The CPU requested is not available on this SMI invocation.\r
  @retval EFI_INVALID_PARAMETER  The CPU cannot support an additional service invocation.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SMM_STARTUP_THIS_AP)(\r
  IN EFI_AP_PROCEDURE  Procedure,\r
  IN UINTN             CpuNumber,\r
  IN OUT VOID          *ProcArguments OPTIONAL\r
  );\r
\r
/**\r
  Function prototype for protocol install notification.\r
\r
  @param[in] Protocol   Points to the protocol's unique identifier.\r
  @param[in] Interface  Points to the interface instance.\r
  @param[in] Handle     The handle on which the interface was installed.\r
\r
  @return Status Code\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SMM_NOTIFY_FN)(\r
  IN CONST EFI_GUID  *Protocol,\r
  IN VOID            *Interface,\r
  IN EFI_HANDLE      Handle\r
  );\r
\r
/**\r
  Register a callback function be called when a particular protocol interface is installed.\r
\r
  The SmmRegisterProtocolNotify() function creates a registration Function that is to be \r
  called whenever a protocol interface is installed for Protocol by \r
  SmmInstallProtocolInterface().\r
\r
  @param[in]  Protocol          The unique ID of the protocol for which the event is to be registered.\r
  @param[in]  Function          Points to the notification function.\r
  @param[out] Registration      A pointer to a memory location to receive the registration value.\r
\r
  @retval EFI_SUCCESS           Successfully returned the registration record that has been added.\r
  @retval EFI_INVALID_PARAMETER One or more of Protocol, Function and Registration is NULL.\r
  @retval EFI_OUT_OF_RESOURCES  Not enough memory resource to finish the request.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SMM_REGISTER_PROTOCOL_NOTIFY)(\r
  IN  CONST EFI_GUID     *Protocol,\r
  IN  EFI_SMM_NOTIFY_FN  Function,\r
  OUT VOID               **Registration\r
  );\r
\r
/**\r
  Manage SMI of a particular type.\r
\r
  @param[in]     HandlerType     Points to the handler type or NULL for root SMI handlers.\r
  @param[in]     Context         Points to an optional context buffer.\r
  @param[in,out] CommBuffer      Points to the optional communication buffer.\r
  @param[in,out] CommBufferSize  Points to the size of the optional communication buffer.\r
\r
  @retval EFI_SUCCESS                        Interrupt source was processed successfully but not quiesced.\r
  @retval EFI_INTERRUPT_PENDING              One or more SMI sources could not be quiesced.\r
  @retval EFI_WARN_INTERRUPT_SOURCE_PENDING  Interrupt source was not handled or quiesced.\r
  @retval EFI_WARN_INTERRUPT_SOURCE_QUIESCED Interrupt source was handled and quiesced.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SMM_INTERRUPT_MANAGE)(\r
  IN CONST EFI_GUID  *HandlerType,\r
  IN CONST VOID      *Context         OPTIONAL,\r
  IN OUT VOID        *CommBuffer      OPTIONAL,\r
  IN OUT UINTN       *CommBufferSize  OPTIONAL\r
  );\r
\r
/**\r
  Main entry point for an SMM handler dispatch or communicate-based callback.\r
\r
  @param[in]     DispatchHandle  The unique handle assigned to this handler by SmiHandlerRegister().\r
  @param[in]     Context         Points to an optional handler context which was specified when the\r
                                 handler was registered.\r
  @param[in,out] CommBuffer      A pointer to a collection of data in memory that will\r
                                 be conveyed from a non-SMM environment into an SMM environment.\r
  @param[in,out] CommBufferSize  The size of the CommBuffer.\r
\r
  @retval EFI_SUCCESS                         The interrupt was handled and quiesced. No other handlers \r
                                              should still be called.\r
  @retval EFI_WARN_INTERRUPT_SOURCE_QUIESCED  The interrupt has been quiesced but other handlers should \r
                                              still be called.\r
  @retval EFI_WARN_INTERRUPT_SOURCE_PENDING   The interrupt is still pending and other handlers should still \r
                                              be called.\r
  @retval EFI_INTERRUPT_PENDING               The interrupt could not be quiesced.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SMM_HANDLER_ENTRY_POINT2)(\r
  IN EFI_HANDLE  DispatchHandle,\r
  IN CONST VOID  *Context         OPTIONAL,\r
  IN OUT VOID    *CommBuffer      OPTIONAL,\r
  IN OUT UINTN   *CommBufferSize  OPTIONAL\r
  );\r
\r
/**\r
  Registers a handler to execute within SMM.\r
\r
  @param[in]  Handler            Handler service funtion pointer.\r
  @param[in]  HandlerType        Points to the handler type or NULL for root SMI handlers.\r
  @param[out] DispatchHandle     On return, contains a unique handle which can be used to later\r
                                 unregister the handler function.\r
\r
  @retval EFI_SUCCESS            SMI handler added successfully.\r
  @retval EFI_INVALID_PARAMETER  Handler is NULL or DispatchHandle is NULL.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SMM_INTERRUPT_REGISTER)(\r
  IN  EFI_SMM_HANDLER_ENTRY_POINT2  Handler,\r
  IN  CONST EFI_GUID                *HandlerType OPTIONAL,\r
  OUT EFI_HANDLE                    *DispatchHandle\r
  );\r
\r
/**\r
  Unregister a handler in SMM.\r
\r
  @param[in] DispatchHandle      The handle that was specified when the handler was registered.\r
\r
  @retval EFI_SUCCESS            Handler function was successfully unregistered.\r
  @retval EFI_INVALID_PARAMETER  DispatchHandle does not refer to a valid handle.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SMM_INTERRUPT_UNREGISTER)(\r
  IN EFI_HANDLE  DispatchHandle\r
  );\r
\r
///\r
/// Processor information and functionality needed by SMM Foundation.\r
///\r
typedef struct _EFI_SMM_ENTRY_CONTEXT {\r
  EFI_SMM_STARTUP_THIS_AP  SmmStartupThisAp;\r
  ///\r
  /// A number between zero and the NumberOfCpus field. This field designates which \r
  /// processor is executing the SMM Foundation.\r
  ///\r
  UINTN                    CurrentlyExecutingCpu;\r
  ///\r
  /// The number of current operational processors in the platform.  This is a 1 based \r
  /// counter.  This does not indicate the number of processors that entered SMM.\r
  ///\r
  UINTN                    NumberOfCpus;\r
  ///\r
  /// Points to an array, where each element describes the number of bytes in the \r
  /// corresponding save state specified by CpuSaveState. There are always \r
  /// NumberOfCpus entries in the array. \r
  ///\r
  UINTN                    *CpuSaveStateSize;\r
  ///\r
  /// Points to an array, where each element is a pointer to a CPU save state. The \r
  /// corresponding element in CpuSaveStateSize specifies the number of bytes in the \r
  /// save state area. There are always NumberOfCpus entries in the array.\r
  ///\r
  VOID                     **CpuSaveState;\r
} EFI_SMM_ENTRY_CONTEXT;\r
\r
/**\r
  This function is the main entry point to the SMM Foundation.\r
\r
  @param[in] SmmEntryContext  Processor information and functionality needed by SMM Foundation.\r
**/\r
typedef\r
VOID\r
(EFIAPI *EFI_SMM_ENTRY_POINT)(\r
  IN CONST EFI_SMM_ENTRY_CONTEXT  *SmmEntryContext\r
  );\r
\r
///\r
/// System Management System Table (SMST)\r
///\r
/// The System Management System Table (SMST) is a table that contains a collection of common \r
/// services for managing SMRAM allocation and providing basic I/O services. These services are \r
/// intended for both preboot and runtime usage.\r
///\r
struct _EFI_SMM_SYSTEM_TABLE2 {\r
  ///\r
  /// The table header for the SMST.\r
  ///\r
  EFI_TABLE_HEADER                     Hdr;\r
  ///\r
  /// A pointer to a NULL-terminated Unicode string containing the vendor name.\r
  /// It is permissible for this pointer to be NULL.\r
  ///\r
  CHAR16                               *SmmFirmwareVendor;\r
  ///\r
  /// The particular revision of the firmware.\r
  ///\r
  UINT32                               SmmFirmwareRevision;\r
\r
  EFI_SMM_INSTALL_CONFIGURATION_TABLE2 SmmInstallConfigurationTable;\r
\r
  ///\r
  /// I/O Service\r
  ///\r
  EFI_SMM_CPU_IO_PROTOCOL              SmmIo;\r
\r
  ///\r
  /// Runtime memory services\r
  ///\r
  EFI_ALLOCATE_POOL                    SmmAllocatePool;\r
  EFI_FREE_POOL                        SmmFreePool;\r
  EFI_ALLOCATE_PAGES                   SmmAllocatePages;\r
  EFI_FREE_PAGES                       SmmFreePages;\r
\r
  ///\r
  /// MP service\r
  ///\r
  EFI_SMM_STARTUP_THIS_AP              SmmStartupThisAp;\r
\r
  ///\r
  /// CPU information records\r
  ///\r
\r
  ///\r
  /// A number between zero and and the NumberOfCpus field. This field designates \r
  /// which processor is executing the SMM infrastructure.\r
  ///\r
  UINTN                                CurrentlyExecutingCpu;\r
  ///\r
  /// The number of current operational processors in the platform.  This is a 1 based counter.\r
  ///\r
  UINTN                                NumberOfCpus;\r
  ///\r
  /// Points to an array, where each element describes the number of bytes in the \r
  /// corresponding save state specified by CpuSaveState. There are always \r
  /// NumberOfCpus entries in the array. \r
  ///\r
  UINTN                                *CpuSaveStateSize;\r
  ///\r
  /// Points to an array, where each element is a pointer to a CPU save state. The \r
  /// corresponding element in CpuSaveStateSize specifies the number of bytes in the \r
  /// save state area. There are always NumberOfCpus entries in the array.\r
  ///\r
  VOID                                 **CpuSaveState;\r
\r
  ///\r
  /// Extensibility table\r
  ///\r
\r
  ///\r
  /// The number of UEFI Configuration Tables in the buffer SmmConfigurationTable.\r
  ///\r
  UINTN                                NumberOfTableEntries;\r
  ///\r
  /// A pointer to the UEFI Configuration Tables. The number of entries in the table is \r
  /// NumberOfTableEntries. \r
  ///\r
  EFI_CONFIGURATION_TABLE              *SmmConfigurationTable;\r
\r
  ///\r
  /// Protocol services\r
  ///\r
  EFI_INSTALL_PROTOCOL_INTERFACE       SmmInstallProtocolInterface;\r
  EFI_UNINSTALL_PROTOCOL_INTERFACE     SmmUninstallProtocolInterface;\r
  EFI_HANDLE_PROTOCOL                  SmmHandleProtocol;\r
  EFI_SMM_REGISTER_PROTOCOL_NOTIFY     SmmRegisterProtocolNotify;\r
  EFI_LOCATE_HANDLE                    SmmLocateHandle;\r
  EFI_LOCATE_PROTOCOL                  SmmLocateProtocol;\r
\r
  ///\r
  /// SMI Management functions\r
  ///\r
  EFI_SMM_INTERRUPT_MANAGE             SmiManage;\r
  EFI_SMM_INTERRUPT_REGISTER           SmiHandlerRegister;\r
  EFI_SMM_INTERRUPT_UNREGISTER         SmiHandlerUnRegister;\r
};\r
\r
#endif\r
Commit	Line	Data
04c5d169	1	/** @file\r
	2	Common definitions in the Platform Initialization Specification version 1.2\r
	3	VOLUME 4 System Management Mode Core Interface version.\r
	4	\r
	5	Copyright (c) 2009, Intel Corporation\r
	6	All rights reserved. This program and the accompanying materials\r
	7	are licensed and made available under the terms and conditions of the BSD License\r
	8	which accompanies this distribution. The full text of the license may be found at\r
	9	http://opensource.org/licenses/bsd-license.php\r
	10	\r
	11	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	12	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	13	\r
	14	**/\r
	15	\r
	16	#ifndef _PI_SMMCIS_H_\r
	17	#define _PI_SMMCIS_H_\r
	18	\r
	19	#include <Pi/PiMultiPhase.h>\r
	20	#include <Protocol/SmmCpuIo.h>\r
	21	\r
a2bb197e	22	///\r
	23	/// Note:\r
	24	/// To avoid name conflict between PI and Framework SMM spec, the following names defined\r
	25	/// in PI 1.2 SMM spec are renamed. These renamings are not yet in a public PI spec and errta.\r
	26	///\r
	27	/// EFI_SMM_SYSTEM_TABLE -> EFI_SMM_SYSTEM_TABLE2\r
	28	/// EFI_SMM_SYSTEM_TABLE_REVISION -> EFI_SMM_SYSTEM_TABLE2_REVISION\r
	29	/// EFI_SMM_INSTALL_CONFIGURATION_TABLE -> EFI_SMM_INSTALL_CONFIGURATION_TABLE2\r
	30	///\r
	31	\r
	32	typedef struct _EFI_SMM_SYSTEM_TABLE2 EFI_SMM_SYSTEM_TABLE2;\r
04c5d169	33	\r
	34	///\r
	35	/// The System Management System Table (SMST) signature\r
	36	///\r
	37	#define SMM_SMST_SIGNATURE SIGNATURE_32 ('S', 'M', 'S', 'T')\r
	38	///\r
	39	/// The System Management System Table (SMST) revision is 1.0\r
	40	///\r
a2bb197e	41	#define EFI_SMM_SYSTEM_TABLE2_REVISION ((1 << 16) \| (0x00))\r
04c5d169	42	\r
	43	/**\r
	44	Adds, updates, or removes a configuration table entry from the System Management System Table.\r
	45	\r
	46	The SmmInstallConfigurationTable() function is used to maintain the list\r
	47	of configuration tables that are stored in the System Management System\r
	48	Table. The list is stored as an array of (GUID, Pointer) pairs. The list\r
	49	must be allocated from pool memory with PoolType set to EfiRuntimeServicesData.\r
	50	\r
	51	@param[in] SystemTable A pointer to the SMM System Table (SMST).\r
	52	@param[in] Guid A pointer to the GUID for the entry to add, update, or remove.\r
	53	@param[in] Table A pointer to the buffer of the table to add.\r
	54	@param[in] TableSize The size of the table to install.\r
	55	\r
	56	@retval EFI_SUCCESS The (Guid, Table) pair was added, updated, or removed.\r
	57	@retval EFI_INVALID_PARAMETER Guid is not valid.\r
	58	@retval EFI_NOT_FOUND An attempt was made to delete a non-existent entry.\r
	59	@retval EFI_OUT_OF_RESOURCES There is not enough memory available to complete the operation.\r
	60	**/\r
	61	typedef\r
	62	EFI_STATUS\r
a2bb197e	63	(EFIAPI *EFI_SMM_INSTALL_CONFIGURATION_TABLE2)(\r
	64	IN CONST EFI_SMM_SYSTEM_TABLE2 *SystemTable,\r
	65	IN CONST EFI_GUID *Guid,\r
	66	IN VOID *Table,\r
	67	IN UINTN TableSize\r
04c5d169	68	);\r
04c5d169	69	\r
04c5d169	70	/**\r
	71	The SmmStartupThisAp() lets the caller to get one distinct application processor\r
	72	(AP) in the enabled processor pool to execute a caller-provided code stream\r
	73	while in SMM. It runs the given code on this processor and reports the status.\r
	74	It must be noted that the supplied code stream will be run only on an enabled \r
	75	processor which has also entered SMM. \r
	76	\r
	77	@param[in] Procedure A pointer to the code stream to be run on the designated AP of the system.\r
	78	@param[in] CpuNumber The zero-based index of the processor number of the AP on which the code stream is supposed to run.\r
	79	@param[in,out] ProcArguments Allow the caller to pass a list of parameters to the code that is run by the AP.\r
	80	\r
	81	@retval EFI_SUCCESS The call was successful and the return parameters are valid.\r
	82	@retval EFI_INVALID_PARAMETER The input arguments are out of range.\r
	83	@retval EFI_INVALID_PARAMETER The CPU requested is not available on this SMI invocation.\r
	84	@retval EFI_INVALID_PARAMETER The CPU cannot support an additional service invocation.\r
	85	**/\r
	86	typedef\r
	87	EFI_STATUS\r
	88	(EFIAPI *EFI_SMM_STARTUP_THIS_AP)(\r
	89	IN EFI_AP_PROCEDURE Procedure,\r
	90	IN UINTN CpuNumber,\r
	91	IN OUT VOID *ProcArguments OPTIONAL\r
	92	);\r
	93	\r
	94	/**\r
	95	Function prototype for protocol install notification.\r
	96	\r
	97	@param[in] Protocol Points to the protocol's unique identifier.\r
	98	@param[in] Interface Points to the interface instance.\r
	99	@param[in] Handle The handle on which the interface was installed.\r
	100	\r
	101	@return Status Code\r
	102	**/\r
	103	typedef\r
	104	EFI_STATUS\r
	105	(EFIAPI *EFI_SMM_NOTIFY_FN)(\r
	106	IN CONST EFI_GUID *Protocol,\r
	107	IN VOID *Interface,\r
	108	IN EFI_HANDLE Handle\r
	109	);\r
	110	\r
	111	/**\r
	112	Register a callback function be called when a particular protocol interface is installed.\r
	113	\r
	114	The SmmRegisterProtocolNotify() function creates a registration Function that is to be \r
	115	called whenever a protocol interface is installed for Protocol by \r
	116	SmmInstallProtocolInterface().\r
	117	\r
	118	@param[in] Protocol The unique ID of the protocol for which the event is to be registered.\r
	119	@param[in] Function Points to the notification function.\r
	120	@param[out] Registration A pointer to a memory location to receive the registration value.\r
	121	\r
	122	@retval EFI_SUCCESS Successfully returned the registration record that has been added.\r
	123	@retval EFI_INVALID_PARAMETER One or more of Protocol, Function and Registration is NULL.\r
	124	@retval EFI_OUT_OF_RESOURCES Not enough memory resource to finish the request.\r
	125	**/\r
	126	typedef\r
	127	EFI_STATUS\r
	128	(EFIAPI *EFI_SMM_REGISTER_PROTOCOL_NOTIFY)(\r
	129	IN CONST EFI_GUID *Protocol,\r
	130	IN EFI_SMM_NOTIFY_FN Function,\r
	131	OUT VOID **Registration\r
	132	);\r
	133	\r
134	/**\r
135	Manage SMI of a particular type.\r
136	\r
137	@param[in] HandlerType Points to the handler type or NULL for root SMI handlers.\r
138	@param[in] Context Points to an optional context buffer.\r
139	@param[in,out] CommBuffer Points to the optional communication buffer.\r
140	@param[in,out] CommBufferSize Points to the size of the optional communication buffer.\r
141	\r
142	@retval EFI_SUCCESS Interrupt source was processed successfully but not quiesced.\r
143	@retval EFI_INTERRUPT_PENDING One or more SMI sources could not be quiesced.\r
144	@retval EFI_WARN_INTERRUPT_SOURCE_PENDING Interrupt source was not handled or quiesced.\r
145	@retval EFI_WARN_INTERRUPT_SOURCE_QUIESCED Interrupt source was handled and quiesced.\r
146	**/\r
147	typedef\r
148	EFI_STATUS\r
149	(EFIAPI *EFI_SMM_INTERRUPT_MANAGE)(\r
150	IN CONST EFI_GUID *HandlerType,\r
151	IN CONST VOID *Context OPTIONAL,\r
152	IN OUT VOID *CommBuffer OPTIONAL,\r
153	IN OUT UINTN *CommBufferSize OPTIONAL\r
154	);\r
155	\r
156	/**\r
157	Main entry point for an SMM handler dispatch or communicate-based callback.\r
158	\r
159	@param[in] DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().\r
160	@param[in] Context Points to an optional handler context which was specified when the\r
161	handler was registered.\r
162	@param[in,out] CommBuffer A pointer to a collection of data in memory that will\r
163	be conveyed from a non-SMM environment into an SMM environment.\r
164	@param[in,out] CommBufferSize The size of the CommBuffer.\r
165	\r
166	@retval EFI_SUCCESS The interrupt was handled and quiesced. No other handlers \r
167	should still be called.\r
168	@retval EFI_WARN_INTERRUPT_SOURCE_QUIESCED The interrupt has been quiesced but other handlers should \r
169	still be called.\r
170	@retval EFI_WARN_INTERRUPT_SOURCE_PENDING The interrupt is still pending and other handlers should still \r
171	be called.\r
172	@retval EFI_INTERRUPT_PENDING The interrupt could not be quiesced.\r
173	**/\r
174	typedef\r
175	EFI_STATUS\r
176	(EFIAPI *EFI_SMM_HANDLER_ENTRY_POINT2)(\r
177	IN EFI_HANDLE DispatchHandle,\r
178	IN CONST VOID *Context OPTIONAL,\r
179	IN OUT VOID *CommBuffer OPTIONAL,\r
180	IN OUT UINTN *CommBufferSize OPTIONAL\r
181	);\r
182	\r
183	/**\r
184	Registers a handler to execute within SMM.\r
185	\r
186	@param[in] Handler Handler service funtion pointer.\r
187	@param[in] HandlerType Points to the handler type or NULL for root SMI handlers.\r
188	@param[out] DispatchHandle On return, contains a unique handle which can be used to later\r
189	unregister the handler function.\r
190	\r
191	@retval EFI_SUCCESS SMI handler added successfully.\r
192	@retval EFI_INVALID_PARAMETER Handler is NULL or DispatchHandle is NULL.\r
193	**/\r
194	typedef\r
195	EFI_STATUS\r
196	(EFIAPI *EFI_SMM_INTERRUPT_REGISTER)(\r
197	IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler,\r
198	IN CONST EFI_GUID *HandlerType OPTIONAL,\r
199	OUT EFI_HANDLE *DispatchHandle\r
200	);\r
201	\r
202	/**\r
203	Unregister a handler in SMM.\r
204	\r
205	@param[in] DispatchHandle The handle that was specified when the handler was registered.\r
206	\r
207	@retval EFI_SUCCESS Handler function was successfully unregistered.\r
208	@retval EFI_INVALID_PARAMETER DispatchHandle does not refer to a valid handle.\r
209	**/\r
210	typedef\r
211	EFI_STATUS\r
212	(EFIAPI *EFI_SMM_INTERRUPT_UNREGISTER)(\r
213	IN EFI_HANDLE DispatchHandle\r
214	);\r
215	\r
216	///\r
217	/// Processor information and functionality needed by SMM Foundation.\r
218	///\r
219	typedef struct _EFI_SMM_ENTRY_CONTEXT {\r
220	EFI_SMM_STARTUP_THIS_AP SmmStartupThisAp;\r
221	///\r
222	/// A number between zero and the NumberOfCpus field. This field designates which \r
223	/// processor is executing the SMM Foundation.\r
224	///\r
225	UINTN CurrentlyExecutingCpu;\r
226	///\r
227	/// The number of current operational processors in the platform. This is a 1 based \r
228	/// counter. This does not indicate the number of processors that entered SMM.\r
229	///\r
230	UINTN NumberOfCpus;\r
231	///\r
232	/// Points to an array, where each element describes the number of bytes in the \r
233	/// corresponding save state specified by CpuSaveState. There are always \r
234	/// NumberOfCpus entries in the array. \r
235	///\r
236	UINTN *CpuSaveStateSize;\r
237	///\r
238	/// Points to an array, where each element is a pointer to a CPU save state. The \r
239	/// corresponding element in CpuSaveStateSize specifies the number of bytes in the \r
240	/// save state area. There are always NumberOfCpus entries in the array.\r
241	///\r
242	VOID **CpuSaveState;\r
243	} EFI_SMM_ENTRY_CONTEXT;\r
244	\r
245	/**\r
246	This function is the main entry point to the SMM Foundation.\r
247	\r
248	@param[in] SmmEntryContext Processor information and functionality needed by SMM Foundation.\r
249	**/\r
250	typedef\r
251	VOID\r
252	(EFIAPI *EFI_SMM_ENTRY_POINT)(\r
253	IN CONST EFI_SMM_ENTRY_CONTEXT *SmmEntryContext\r
254	);\r
255	\r
256	///\r
257	/// System Management System Table (SMST)\r
258	///\r
259	/// The System Management System Table (SMST) is a table that contains a collection of common \r
260	/// services for managing SMRAM allocation and providing basic I/O services. These services are \r
261	/// intended for both preboot and runtime usage.\r
262	///\r
a2bb197e	263	struct _EFI_SMM_SYSTEM_TABLE2 {\r
04c5d169	264	///\r
	265	/// The table header for the SMST.\r
	266	///\r
a2bb197e	267	EFI_TABLE_HEADER Hdr;\r
04c5d169	268	///\r
	269	/// A pointer to a NULL-terminated Unicode string containing the vendor name.\r
	270	/// It is permissible for this pointer to be NULL.\r
	271	///\r
a2bb197e	272	CHAR16 *SmmFirmwareVendor;\r
04c5d169	273	///\r
	274	/// The particular revision of the firmware.\r
	275	///\r
a2bb197e	276	UINT32 SmmFirmwareRevision;\r
04c5d169	277	\r
a2bb197e	278	EFI_SMM_INSTALL_CONFIGURATION_TABLE2 SmmInstallConfigurationTable;\r
04c5d169	279	\r
	280	///\r
	281	/// I/O Service\r
	282	///\r
a2bb197e	283	EFI_SMM_CPU_IO_PROTOCOL SmmIo;\r
04c5d169	284	\r
	285	///\r
	286	/// Runtime memory services\r
	287	///\r
a2bb197e	288	EFI_ALLOCATE_POOL SmmAllocatePool;\r
	289	EFI_FREE_POOL SmmFreePool;\r
	290	EFI_ALLOCATE_PAGES SmmAllocatePages;\r
	291	EFI_FREE_PAGES SmmFreePages;\r
04c5d169	292	\r
	293	///\r
	294	/// MP service\r
	295	///\r
a2bb197e	296	EFI_SMM_STARTUP_THIS_AP SmmStartupThisAp;\r
04c5d169	297	\r
	298	///\r
	299	/// CPU information records\r
	300	///\r
	301	\r
	302	///\r
	303	/// A number between zero and and the NumberOfCpus field. This field designates \r
	304	/// which processor is executing the SMM infrastructure.\r
	305	///\r
a2bb197e	306	UINTN CurrentlyExecutingCpu;\r
04c5d169	307	///\r
	308	/// The number of current operational processors in the platform. This is a 1 based counter.\r
	309	///\r
a2bb197e	310	UINTN NumberOfCpus;\r
04c5d169	311	///\r
	312	/// Points to an array, where each element describes the number of bytes in the \r
	313	/// corresponding save state specified by CpuSaveState. There are always \r
	314	/// NumberOfCpus entries in the array. \r
	315	///\r
a2bb197e	316	UINTN *CpuSaveStateSize;\r
04c5d169	317	///\r
	318	/// Points to an array, where each element is a pointer to a CPU save state. The \r
	319	/// corresponding element in CpuSaveStateSize specifies the number of bytes in the \r
	320	/// save state area. There are always NumberOfCpus entries in the array.\r
	321	///\r
a2bb197e	322	VOID **CpuSaveState;\r
04c5d169	323	\r
	324	///\r
	325	/// Extensibility table\r
	326	///\r
	327	\r
	328	///\r
	329	/// The number of UEFI Configuration Tables in the buffer SmmConfigurationTable.\r
	330	///\r
a2bb197e	331	UINTN NumberOfTableEntries;\r
04c5d169	332	///\r
	333	/// A pointer to the UEFI Configuration Tables. The number of entries in the table is \r
	334	/// NumberOfTableEntries. \r
	335	///\r
a2bb197e	336	EFI_CONFIGURATION_TABLE *SmmConfigurationTable;\r
04c5d169	337	\r
	338	///\r
	339	/// Protocol services\r
	340	///\r
a2bb197e	341	EFI_INSTALL_PROTOCOL_INTERFACE SmmInstallProtocolInterface;\r
	342	EFI_UNINSTALL_PROTOCOL_INTERFACE SmmUninstallProtocolInterface;\r
	343	EFI_HANDLE_PROTOCOL SmmHandleProtocol;\r
	344	EFI_SMM_REGISTER_PROTOCOL_NOTIFY SmmRegisterProtocolNotify;\r
	345	EFI_LOCATE_HANDLE SmmLocateHandle;\r
	346	EFI_LOCATE_PROTOCOL SmmLocateProtocol;\r
04c5d169	347	\r
	348	///\r
	349	/// SMI Management functions\r
	350	///\r
a2bb197e	351	EFI_SMM_INTERRUPT_MANAGE SmiManage;\r
	352	EFI_SMM_INTERRUPT_REGISTER SmiHandlerRegister;\r
	353	EFI_SMM_INTERRUPT_UNREGISTER SmiHandlerUnRegister;\r
04c5d169	354	};\r
	355	\r
	356	#endif\r