MdePkg/Include/Library/HobLib.h - device/linaro/bootloader/edk2 - Git at Google

 /** @file
   Provides services to create and parse HOBs. Only available for PEI
   and DXE module types.

   The HOB Library supports the efficient creation and searching of HOBs
   defined in the PI Specification.
   A HOB is a Hand-Off Block, defined in the Framework architecture, that
   allows the PEI phase to pass information to the DXE phase. HOBs are position
   independent and can be relocated easily to different memory memory locations.

 Copyright (c) 2006 - 2014, 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 __HOB_LIB_H__
 #define __HOB_LIB_H__

 /**
   Returns the pointer to the HOB list.

   This function returns the pointer to first HOB in the list.
   For PEI phase, the PEI service GetHobList() can be used to retrieve the pointer
   to the HOB list.  For the DXE phase, the HOB list pointer can be retrieved through
   the EFI System Table by looking up theHOB list GUID in the System Configuration Table.
   Since the System Configuration Table does not exist that the time the DXE Core is
   launched, the DXE Core uses a global variable from the DXE Core Entry Point Library
   to manage the pointer to the HOB list.

   If the pointer to the HOB list is NULL, then ASSERT().

   @return The pointer to the HOB list.

 **/
 VOID *
 EFIAPI
 GetHobList (
   VOID
   );

 /**
   Returns the next instance of a HOB type from the starting HOB.

   This function searches the first instance of a HOB type from the starting HOB pointer.
   If there does not exist such HOB type from the starting HOB pointer, it will return NULL.
   In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer
   unconditionally: it returns HobStart back if HobStart itself meets the requirement;
   caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.

   If HobStart is NULL, then ASSERT().

   @param  Type          The HOB type to return.
   @param  HobStart      The starting HOB pointer to search from.

   @return The next instance of a HOB type from the starting HOB.

 **/
 VOID *
 EFIAPI
 GetNextHob (
   IN UINT16                 Type,
   IN CONST VOID             *HobStart
   );

 /**
   Returns the first instance of a HOB type among the whole HOB list.

   This function searches the first instance of a HOB type among the whole HOB list.
   If there does not exist such HOB type in the HOB list, it will return NULL.

   If the pointer to the HOB list is NULL, then ASSERT().

   @param  Type          The HOB type to return.

   @return The next instance of a HOB type from the starting HOB.

 **/
 VOID *
 EFIAPI
 GetFirstHob (
   IN UINT16                 Type
   );

 /**
   Returns the next instance of the matched GUID HOB from the starting HOB.

   This function searches the first instance of a HOB from the starting HOB pointer.
   Such HOB should satisfy two conditions:
   its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.
   If there does not exist such HOB from the starting HOB pointer, it will return NULL.
   Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()
   to extract the data section and its size info respectively.
   In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer
   unconditionally: it returns HobStart back if HobStart itself meets the requirement;
   caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.

   If Guid is NULL, then ASSERT().
   If HobStart is NULL, then ASSERT().

   @param  Guid          The GUID to match with in the HOB list.
   @param  HobStart      A pointer to a Guid.

   @return The next instance of the matched GUID HOB from the starting HOB.

 **/
 VOID *
 EFIAPI
 GetNextGuidHob (
   IN CONST EFI_GUID         *Guid,
   IN CONST VOID             *HobStart
   );

 /**
   Returns the first instance of the matched GUID HOB among the whole HOB list.

   This function searches the first instance of a HOB among the whole HOB list.
   Such HOB should satisfy two conditions:
   its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.
   If there does not exist such HOB from the starting HOB pointer, it will return NULL.
   Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()
   to extract the data section and its size info respectively.

   If the pointer to the HOB list is NULL, then ASSERT().
   If Guid is NULL, then ASSERT().

   @param  Guid          The GUID to match with in the HOB list.

   @return The first instance of the matched GUID HOB among the whole HOB list.

 **/
 VOID *
 EFIAPI
 GetFirstGuidHob (
   IN CONST EFI_GUID         *Guid
   );

 /**
   Get the system boot mode from the HOB list.

   This function returns the system boot mode information from the
   PHIT HOB in HOB list.

   If the pointer to the HOB list is NULL, then ASSERT().

   @param  VOID

   @return The Boot Mode.

 **/
 EFI_BOOT_MODE
 EFIAPI
 GetBootModeHob (
   VOID
   );

 /**
   Builds a HOB for a loaded PE32 module.

   This function builds a HOB for a loaded PE32 module.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If ModuleName is NULL, then ASSERT().
   If there is no additional space for HOB creation, then ASSERT().

   @param  ModuleName              The GUID File Name of the module.
   @param  MemoryAllocationModule  The 64 bit physical address of the module.
   @param  ModuleLength            The length of the module in bytes.
   @param  EntryPoint              The 64 bit physical address of the module entry point.

 **/
 VOID
 EFIAPI
 BuildModuleHob (
   IN CONST EFI_GUID         *ModuleName,
   IN EFI_PHYSICAL_ADDRESS   MemoryAllocationModule,
   IN UINT64                 ModuleLength,
   IN EFI_PHYSICAL_ADDRESS   EntryPoint
   );

 /**
   Builds a HOB that describes a chunk of system memory with Owner GUID.

   This function builds a HOB that describes a chunk of system memory.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If there is no additional space for HOB creation, then ASSERT().

   @param  ResourceType        The type of resource described by this HOB.
   @param  ResourceAttribute   The resource attributes of the memory described by this HOB.
   @param  PhysicalStart       The 64 bit physical address of memory described by this HOB.
   @param  NumberOfBytes       The length of the memory described by this HOB in bytes.
   @param  OwnerGUID           GUID for the owner of this resource.

 **/
 VOID
 EFIAPI
 BuildResourceDescriptorWithOwnerHob (
   IN EFI_RESOURCE_TYPE            ResourceType,
   IN EFI_RESOURCE_ATTRIBUTE_TYPE  ResourceAttribute,
   IN EFI_PHYSICAL_ADDRESS         PhysicalStart,
   IN UINT64                       NumberOfBytes,
   IN EFI_GUID                     *OwnerGUID
   );

 /**
   Builds a HOB that describes a chunk of system memory.

   This function builds a HOB that describes a chunk of system memory.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If there is no additional space for HOB creation, then ASSERT().

   @param  ResourceType        The type of resource described by this HOB.
   @param  ResourceAttribute   The resource attributes of the memory described by this HOB.
   @param  PhysicalStart       The 64 bit physical address of memory described by this HOB.
   @param  NumberOfBytes       The length of the memory described by this HOB in bytes.

 **/
 VOID
 EFIAPI
 BuildResourceDescriptorHob (
   IN EFI_RESOURCE_TYPE            ResourceType,
   IN EFI_RESOURCE_ATTRIBUTE_TYPE  ResourceAttribute,
   IN EFI_PHYSICAL_ADDRESS         PhysicalStart,
   IN UINT64                       NumberOfBytes
   );

 /**
   Builds a customized HOB tagged with a GUID for identification and returns
   the start address of GUID HOB data.

   This function builds a customized HOB tagged with a GUID for identification
   and returns the start address of GUID HOB data so that caller can fill the customized data.
   The HOB Header and Name field is already stripped.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If Guid is NULL, then ASSERT().
   If there is no additional space for HOB creation, then ASSERT().
   If DataLength > (0xFFF8 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().
   HobLength is UINT16 and multiples of 8 bytes, so the max HobLength is 0xFFF8.

   @param  Guid          The GUID to tag the customized HOB.
   @param  DataLength    The size of the data payload for the GUID HOB.

   @retval  NULL         The GUID HOB could not be allocated.
   @retval  others       The start address of GUID HOB data.

 **/
 VOID *
 EFIAPI
 BuildGuidHob (
   IN CONST EFI_GUID              *Guid,
   IN UINTN                       DataLength
   );

 /**
   Builds a customized HOB tagged with a GUID for identification, copies the input data to the HOB
   data field, and returns the start address of the GUID HOB data.

   This function builds a customized HOB tagged with a GUID for identification and copies the input
   data to the HOB data field and returns the start address of the GUID HOB data.  It can only be
   invoked during PEI phase; for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
   The HOB Header and Name field is already stripped.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If Guid is NULL, then ASSERT().
   If Data is NULL and DataLength > 0, then ASSERT().
   If there is no additional space for HOB creation, then ASSERT().
   If DataLength > (0xFFF8 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().
   HobLength is UINT16 and multiples of 8 bytes, so the max HobLength is 0xFFF8.

   @param  Guid          The GUID to tag the customized HOB.
   @param  Data          The data to be copied into the data field of the GUID HOB.
   @param  DataLength    The size of the data payload for the GUID HOB.

   @retval  NULL         The GUID HOB could not be allocated.
   @retval  others       The start address of GUID HOB data.

 **/
 VOID *
 EFIAPI
 BuildGuidDataHob (
   IN CONST EFI_GUID              *Guid,
   IN VOID                        *Data,
   IN UINTN                       DataLength
   );

 /**
   Builds a Firmware Volume HOB.

   This function builds a Firmware Volume HOB.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If there is no additional space for HOB creation, then ASSERT().

   @param  BaseAddress   The base address of the Firmware Volume.
   @param  Length        The size of the Firmware Volume in bytes.

 **/
 VOID
 EFIAPI
 BuildFvHob (
   IN EFI_PHYSICAL_ADDRESS        BaseAddress,
   IN UINT64                      Length
   );

 /**
   Builds a EFI_HOB_TYPE_FV2 HOB.

   This function builds a EFI_HOB_TYPE_FV2 HOB.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If there is no additional space for HOB creation, then ASSERT().

   @param  BaseAddress   The base address of the Firmware Volume.
   @param  Length        The size of the Firmware Volume in bytes.
   @param  FvName        The name of the Firmware Volume.
   @param  FileName      The name of the file.

 **/
 VOID
 EFIAPI
 BuildFv2Hob (
   IN          EFI_PHYSICAL_ADDRESS        BaseAddress,
   IN          UINT64                      Length,
   IN CONST    EFI_GUID                    *FvName,
   IN CONST    EFI_GUID                    *FileName
   );

 /**
   Builds a Capsule Volume HOB.

   This function builds a Capsule Volume HOB.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If the platform does not support Capsule Volume HOBs, then ASSERT().
   If there is no additional space for HOB creation, then ASSERT().

   @param  BaseAddress   The base address of the Capsule Volume.
   @param  Length        The size of the Capsule Volume in bytes.

 **/
 VOID
 EFIAPI
 BuildCvHob (
   IN EFI_PHYSICAL_ADDRESS        BaseAddress,
   IN UINT64                      Length
   );

 /**
   Builds a HOB for the CPU.

   This function builds a HOB for the CPU.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If there is no additional space for HOB creation, then ASSERT().

   @param  SizeOfMemorySpace   The maximum physical memory addressability of the processor.
   @param  SizeOfIoSpace       The maximum physical I/O addressability of the processor.

 **/
 VOID
 EFIAPI
 BuildCpuHob (
   IN UINT8                       SizeOfMemorySpace,
   IN UINT8                       SizeOfIoSpace
   );

 /**
   Builds a HOB for the Stack.

   This function builds a HOB for the stack.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If there is no additional space for HOB creation, then ASSERT().

   @param  BaseAddress   The 64 bit physical address of the Stack.
   @param  Length        The length of the stack in bytes.

 **/
 VOID
 EFIAPI
 BuildStackHob (
   IN EFI_PHYSICAL_ADDRESS        BaseAddress,
   IN UINT64                      Length
   );

 /**
   Builds a HOB for the BSP store.

   This function builds a HOB for BSP store.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If there is no additional space for HOB creation, then ASSERT().

   @param  BaseAddress   The 64 bit physical address of the BSP.
   @param  Length        The length of the BSP store in bytes.
   @param  MemoryType    Type of memory allocated by this HOB.

 **/
 VOID
 EFIAPI
 BuildBspStoreHob (
   IN EFI_PHYSICAL_ADDRESS        BaseAddress,
   IN UINT64                      Length,
   IN EFI_MEMORY_TYPE             MemoryType
   );

 /**
   Builds a HOB for the memory allocation.

   This function builds a HOB for the memory allocation.
   It can only be invoked during PEI phase;
   for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

   If there is no additional space for HOB creation, then ASSERT().

   @param  BaseAddress   The 64 bit physical address of the memory.
   @param  Length        The length of the memory allocation in bytes.
   @param  MemoryType    Type of memory allocated by this HOB.

 **/
 VOID
 EFIAPI
 BuildMemoryAllocationHob (
   IN EFI_PHYSICAL_ADDRESS        BaseAddress,
   IN UINT64                      Length,
   IN EFI_MEMORY_TYPE             MemoryType
   );

 /**
   Returns the type of a HOB.

   This macro returns the HobType field from the HOB header for the
   HOB specified by HobStart.

   @param  HobStart   A pointer to a HOB.

   @return HobType.

 **/
 #define GET_HOB_TYPE(HobStart) \
   ((*(EFI_HOB_GENERIC_HEADER **)&(HobStart))->HobType)

 /**
   Returns the length, in bytes, of a HOB.

   This macro returns the HobLength field from the HOB header for the
   HOB specified by HobStart.

   @param  HobStart   A pointer to a HOB.

   @return HobLength.

 **/
 #define GET_HOB_LENGTH(HobStart) \
   ((*(EFI_HOB_GENERIC_HEADER **)&(HobStart))->HobLength)

 /**
   Returns a pointer to the next HOB in the HOB list.

   This macro returns a pointer to HOB that follows the
   HOB specified by HobStart in the HOB List.

   @param  HobStart   A pointer to a HOB.

   @return A pointer to the next HOB in the HOB list.

 **/
 #define GET_NEXT_HOB(HobStart) \
   (VOID *)(*(UINT8 **)&(HobStart) + GET_HOB_LENGTH (HobStart))

 /**
   Determines if a HOB is the last HOB in the HOB list.

   This macro determine if the HOB specified by HobStart is the
   last HOB in the HOB list.  If HobStart is last HOB in the HOB list,
   then TRUE is returned.  Otherwise, FALSE is returned.

   @param  HobStart   A pointer to a HOB.

   @retval TRUE       The HOB specified by HobStart is the last HOB in the HOB list.
   @retval FALSE      The HOB specified by HobStart is not the last HOB in the HOB list.

 **/
 #define END_OF_HOB_LIST(HobStart)  (GET_HOB_TYPE (HobStart) == (UINT16)EFI_HOB_TYPE_END_OF_HOB_LIST)

 /**
   Returns a pointer to data buffer from a HOB of type EFI_HOB_TYPE_GUID_EXTENSION.

   This macro returns a pointer to the data buffer in a HOB specified by HobStart.
   HobStart is assumed to be a HOB of type EFI_HOB_TYPE_GUID_EXTENSION.

   @param   GuidHob   A pointer to a HOB.

   @return  A pointer to the data buffer in a HOB.

 **/
 #define GET_GUID_HOB_DATA(HobStart) \
   (VOID *)(*(UINT8 **)&(HobStart) + sizeof (EFI_HOB_GUID_TYPE))

 /**
   Returns the size of the data buffer from a HOB of type EFI_HOB_TYPE_GUID_EXTENSION.

   This macro returns the size, in bytes, of the data buffer in a HOB specified by HobStart.
   HobStart is assumed to be a HOB of type EFI_HOB_TYPE_GUID_EXTENSION.

   @param   GuidHob   A pointer to a HOB.

   @return  The size of the data buffer.
 **/
 #define GET_GUID_HOB_DATA_SIZE(HobStart) \
   (UINT16)(GET_HOB_LENGTH (HobStart) - sizeof (EFI_HOB_GUID_TYPE))

 #endif
	/** @file
	Provides services to create and parse HOBs. Only available for PEI
	and DXE module types.

	The HOB Library supports the efficient creation and searching of HOBs
	defined in the PI Specification.
	A HOB is a Hand-Off Block, defined in the Framework architecture, that
	allows the PEI phase to pass information to the DXE phase. HOBs are position
	independent and can be relocated easily to different memory memory locations.

	Copyright (c) 2006 - 2014, 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 __HOB_LIB_H__
	#define __HOB_LIB_H__

	/**
	Returns the pointer to the HOB list.

	This function returns the pointer to first HOB in the list.
	For PEI phase, the PEI service GetHobList() can be used to retrieve the pointer
	to the HOB list. For the DXE phase, the HOB list pointer can be retrieved through
	the EFI System Table by looking up theHOB list GUID in the System Configuration Table.
	Since the System Configuration Table does not exist that the time the DXE Core is
	launched, the DXE Core uses a global variable from the DXE Core Entry Point Library
	to manage the pointer to the HOB list.

	If the pointer to the HOB list is NULL, then ASSERT().

	@return The pointer to the HOB list.

	**/
	VOID *
	EFIAPI
	GetHobList (
	VOID
	);

	/**
	Returns the next instance of a HOB type from the starting HOB.

	This function searches the first instance of a HOB type from the starting HOB pointer.
	If there does not exist such HOB type from the starting HOB pointer, it will return NULL.
	In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer
	unconditionally: it returns HobStart back if HobStart itself meets the requirement;
	caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.

	If HobStart is NULL, then ASSERT().

	@param Type The HOB type to return.
	@param HobStart The starting HOB pointer to search from.

	@return The next instance of a HOB type from the starting HOB.

	**/
	VOID *
	EFIAPI
	GetNextHob (
	IN UINT16 Type,
	IN CONST VOID *HobStart
	);

	/**
	Returns the first instance of a HOB type among the whole HOB list.

	This function searches the first instance of a HOB type among the whole HOB list.
	If there does not exist such HOB type in the HOB list, it will return NULL.

	If the pointer to the HOB list is NULL, then ASSERT().

	@param Type The HOB type to return.

	@return The next instance of a HOB type from the starting HOB.

	**/
	VOID *
	EFIAPI
	GetFirstHob (
	IN UINT16 Type
	);

	/**
	Returns the next instance of the matched GUID HOB from the starting HOB.

	This function searches the first instance of a HOB from the starting HOB pointer.
	Such HOB should satisfy two conditions:
	its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.
	If there does not exist such HOB from the starting HOB pointer, it will return NULL.
	Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()
	to extract the data section and its size info respectively.
	In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer
	unconditionally: it returns HobStart back if HobStart itself meets the requirement;
	caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.

	If Guid is NULL, then ASSERT().
	If HobStart is NULL, then ASSERT().

	@param Guid The GUID to match with in the HOB list.
	@param HobStart A pointer to a Guid.

	@return The next instance of the matched GUID HOB from the starting HOB.

	**/
	VOID *
	EFIAPI
	GetNextGuidHob (
	IN CONST EFI_GUID *Guid,
	IN CONST VOID *HobStart
	);

	/**
	Returns the first instance of the matched GUID HOB among the whole HOB list.

	This function searches the first instance of a HOB among the whole HOB list.
	Such HOB should satisfy two conditions:
	its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.
	If there does not exist such HOB from the starting HOB pointer, it will return NULL.
	Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()
	to extract the data section and its size info respectively.

	If the pointer to the HOB list is NULL, then ASSERT().
	If Guid is NULL, then ASSERT().

	@param Guid The GUID to match with in the HOB list.

	@return The first instance of the matched GUID HOB among the whole HOB list.

	**/
	VOID *
	EFIAPI
	GetFirstGuidHob (
	IN CONST EFI_GUID *Guid
	);

	/**
	Get the system boot mode from the HOB list.

	This function returns the system boot mode information from the
	PHIT HOB in HOB list.

	If the pointer to the HOB list is NULL, then ASSERT().

	@param VOID

	@return The Boot Mode.

	**/
	EFI_BOOT_MODE
	EFIAPI
	GetBootModeHob (
	VOID
	);

	/**
	Builds a HOB for a loaded PE32 module.

	This function builds a HOB for a loaded PE32 module.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If ModuleName is NULL, then ASSERT().
	If there is no additional space for HOB creation, then ASSERT().

	@param ModuleName The GUID File Name of the module.
	@param MemoryAllocationModule The 64 bit physical address of the module.
	@param ModuleLength The length of the module in bytes.
	@param EntryPoint The 64 bit physical address of the module entry point.

	**/
	VOID
	EFIAPI
	BuildModuleHob (
	IN CONST EFI_GUID *ModuleName,
	IN EFI_PHYSICAL_ADDRESS MemoryAllocationModule,
	IN UINT64 ModuleLength,
	IN EFI_PHYSICAL_ADDRESS EntryPoint
	);

	/**
	Builds a HOB that describes a chunk of system memory with Owner GUID.

	This function builds a HOB that describes a chunk of system memory.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If there is no additional space for HOB creation, then ASSERT().

	@param ResourceType The type of resource described by this HOB.
	@param ResourceAttribute The resource attributes of the memory described by this HOB.
	@param PhysicalStart The 64 bit physical address of memory described by this HOB.
	@param NumberOfBytes The length of the memory described by this HOB in bytes.
	@param OwnerGUID GUID for the owner of this resource.

	**/
	VOID
	EFIAPI
	BuildResourceDescriptorWithOwnerHob (
	IN EFI_RESOURCE_TYPE ResourceType,
	IN EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute,
	IN EFI_PHYSICAL_ADDRESS PhysicalStart,
	IN UINT64 NumberOfBytes,
	IN EFI_GUID *OwnerGUID
	);

	/**
	Builds a HOB that describes a chunk of system memory.

	This function builds a HOB that describes a chunk of system memory.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If there is no additional space for HOB creation, then ASSERT().

	@param ResourceType The type of resource described by this HOB.
	@param ResourceAttribute The resource attributes of the memory described by this HOB.
	@param PhysicalStart The 64 bit physical address of memory described by this HOB.
	@param NumberOfBytes The length of the memory described by this HOB in bytes.

	**/
	VOID
	EFIAPI
	BuildResourceDescriptorHob (
	IN EFI_RESOURCE_TYPE ResourceType,
	IN EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute,
	IN EFI_PHYSICAL_ADDRESS PhysicalStart,
	IN UINT64 NumberOfBytes
	);

	/**
	Builds a customized HOB tagged with a GUID for identification and returns
	the start address of GUID HOB data.

	This function builds a customized HOB tagged with a GUID for identification
	and returns the start address of GUID HOB data so that caller can fill the customized data.
	The HOB Header and Name field is already stripped.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If Guid is NULL, then ASSERT().
	If there is no additional space for HOB creation, then ASSERT().
	If DataLength > (0xFFF8 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().
	HobLength is UINT16 and multiples of 8 bytes, so the max HobLength is 0xFFF8.

	@param Guid The GUID to tag the customized HOB.
	@param DataLength The size of the data payload for the GUID HOB.

	@retval NULL The GUID HOB could not be allocated.
	@retval others The start address of GUID HOB data.

	**/
	VOID *
	EFIAPI
	BuildGuidHob (
	IN CONST EFI_GUID *Guid,
	IN UINTN DataLength
	);

	/**
	Builds a customized HOB tagged with a GUID for identification, copies the input data to the HOB
	data field, and returns the start address of the GUID HOB data.

	This function builds a customized HOB tagged with a GUID for identification and copies the input
	data to the HOB data field and returns the start address of the GUID HOB data. It can only be
	invoked during PEI phase; for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
	The HOB Header and Name field is already stripped.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If Guid is NULL, then ASSERT().
	If Data is NULL and DataLength > 0, then ASSERT().
	If there is no additional space for HOB creation, then ASSERT().
	If DataLength > (0xFFF8 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().
	HobLength is UINT16 and multiples of 8 bytes, so the max HobLength is 0xFFF8.

	@param Guid The GUID to tag the customized HOB.
	@param Data The data to be copied into the data field of the GUID HOB.
	@param DataLength The size of the data payload for the GUID HOB.

	@retval NULL The GUID HOB could not be allocated.
	@retval others The start address of GUID HOB data.

	**/
	VOID *
	EFIAPI
	BuildGuidDataHob (
	IN CONST EFI_GUID *Guid,
	IN VOID *Data,
	IN UINTN DataLength
	);

	/**
	Builds a Firmware Volume HOB.

	This function builds a Firmware Volume HOB.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If there is no additional space for HOB creation, then ASSERT().

	@param BaseAddress The base address of the Firmware Volume.
	@param Length The size of the Firmware Volume in bytes.

	**/
	VOID
	EFIAPI
	BuildFvHob (
	IN EFI_PHYSICAL_ADDRESS BaseAddress,
	IN UINT64 Length
	);

	/**
	Builds a EFI_HOB_TYPE_FV2 HOB.

	This function builds a EFI_HOB_TYPE_FV2 HOB.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If there is no additional space for HOB creation, then ASSERT().

	@param BaseAddress The base address of the Firmware Volume.
	@param Length The size of the Firmware Volume in bytes.
	@param FvName The name of the Firmware Volume.
	@param FileName The name of the file.

	**/
	VOID
	EFIAPI
	BuildFv2Hob (
	IN EFI_PHYSICAL_ADDRESS BaseAddress,
	IN UINT64 Length,
	IN CONST EFI_GUID *FvName,
	IN CONST EFI_GUID *FileName
	);

	/**
	Builds a Capsule Volume HOB.

	This function builds a Capsule Volume HOB.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If the platform does not support Capsule Volume HOBs, then ASSERT().
	If there is no additional space for HOB creation, then ASSERT().

	@param BaseAddress The base address of the Capsule Volume.
	@param Length The size of the Capsule Volume in bytes.

	**/
	VOID
	EFIAPI
	BuildCvHob (
	IN EFI_PHYSICAL_ADDRESS BaseAddress,
	IN UINT64 Length
	);

	/**
	Builds a HOB for the CPU.

	This function builds a HOB for the CPU.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If there is no additional space for HOB creation, then ASSERT().

	@param SizeOfMemorySpace The maximum physical memory addressability of the processor.
	@param SizeOfIoSpace The maximum physical I/O addressability of the processor.

	**/
	VOID
	EFIAPI
	BuildCpuHob (
	IN UINT8 SizeOfMemorySpace,
	IN UINT8 SizeOfIoSpace
	);

	/**
	Builds a HOB for the Stack.

	This function builds a HOB for the stack.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If there is no additional space for HOB creation, then ASSERT().

	@param BaseAddress The 64 bit physical address of the Stack.
	@param Length The length of the stack in bytes.

	**/
	VOID
	EFIAPI
	BuildStackHob (
	IN EFI_PHYSICAL_ADDRESS BaseAddress,
	IN UINT64 Length
	);

	/**
	Builds a HOB for the BSP store.

	This function builds a HOB for BSP store.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If there is no additional space for HOB creation, then ASSERT().

	@param BaseAddress The 64 bit physical address of the BSP.
	@param Length The length of the BSP store in bytes.
	@param MemoryType Type of memory allocated by this HOB.

	**/
	VOID
	EFIAPI
	BuildBspStoreHob (
	IN EFI_PHYSICAL_ADDRESS BaseAddress,
	IN UINT64 Length,
	IN EFI_MEMORY_TYPE MemoryType
	);

	/**
	Builds a HOB for the memory allocation.

	This function builds a HOB for the memory allocation.
	It can only be invoked during PEI phase;
	for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.

	If there is no additional space for HOB creation, then ASSERT().

	@param BaseAddress The 64 bit physical address of the memory.
	@param Length The length of the memory allocation in bytes.
	@param MemoryType Type of memory allocated by this HOB.

	**/
	VOID
	EFIAPI
	BuildMemoryAllocationHob (
	IN EFI_PHYSICAL_ADDRESS BaseAddress,
	IN UINT64 Length,
	IN EFI_MEMORY_TYPE MemoryType
	);

	/**
	Returns the type of a HOB.

	This macro returns the HobType field from the HOB header for the
	HOB specified by HobStart.

	@param HobStart A pointer to a HOB.

	@return HobType.

	**/
	#define GET_HOB_TYPE(HobStart) \
	(((EFI_HOB_GENERIC_HEADER *)&(HobStart))->HobType)

	/**
	Returns the length, in bytes, of a HOB.

	This macro returns the HobLength field from the HOB header for the
	HOB specified by HobStart.

	@param HobStart A pointer to a HOB.

	@return HobLength.

	**/
	#define GET_HOB_LENGTH(HobStart) \
	(((EFI_HOB_GENERIC_HEADER *)&(HobStart))->HobLength)

	/**
	Returns a pointer to the next HOB in the HOB list.

	This macro returns a pointer to HOB that follows the
	HOB specified by HobStart in the HOB List.

	@param HobStart A pointer to a HOB.

	@return A pointer to the next HOB in the HOB list.

	**/
	#define GET_NEXT_HOB(HobStart) \
	(VOID )((UINT8 **)&(HobStart) + GET_HOB_LENGTH (HobStart))

	/**
	Determines if a HOB is the last HOB in the HOB list.

	This macro determine if the HOB specified by HobStart is the
	last HOB in the HOB list. If HobStart is last HOB in the HOB list,
	then TRUE is returned. Otherwise, FALSE is returned.

	@param HobStart A pointer to a HOB.

	@retval TRUE The HOB specified by HobStart is the last HOB in the HOB list.
	@retval FALSE The HOB specified by HobStart is not the last HOB in the HOB list.

	**/
	#define END_OF_HOB_LIST(HobStart) (GET_HOB_TYPE (HobStart) == (UINT16)EFI_HOB_TYPE_END_OF_HOB_LIST)

	/**
	Returns a pointer to data buffer from a HOB of type EFI_HOB_TYPE_GUID_EXTENSION.

	This macro returns a pointer to the data buffer in a HOB specified by HobStart.
	HobStart is assumed to be a HOB of type EFI_HOB_TYPE_GUID_EXTENSION.

	@param GuidHob A pointer to a HOB.

	@return A pointer to the data buffer in a HOB.

	**/
	#define GET_GUID_HOB_DATA(HobStart) \
	(VOID )((UINT8 **)&(HobStart) + sizeof (EFI_HOB_GUID_TYPE))

	/**
	Returns the size of the data buffer from a HOB of type EFI_HOB_TYPE_GUID_EXTENSION.

	This macro returns the size, in bytes, of the data buffer in a HOB specified by HobStart.
	HobStart is assumed to be a HOB of type EFI_HOB_TYPE_GUID_EXTENSION.

	@param GuidHob A pointer to a HOB.

	@return The size of the data buffer.
	**/
	#define GET_GUID_HOB_DATA_SIZE(HobStart) \
	(UINT16)(GET_HOB_LENGTH (HobStart) - sizeof (EFI_HOB_GUID_TYPE))

	#endif