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567 lines
18 KiB
567 lines
18 KiB
4 years ago
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/** @file
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Provides services to create and parse HOBs. Only available for PEI
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and DXE module types.
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The HOB Library supports the efficient creation and searching of HOBs
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defined in the PI Specification.
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A HOB is a Hand-Off Block, defined in the Framework architecture, that
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allows the PEI phase to pass information to the DXE phase. HOBs are position
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independent and can be relocated easily to different memory locations.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __HOB_LIB_H__
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#define __HOB_LIB_H__
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/**
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Returns the pointer to the HOB list.
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This function returns the pointer to first HOB in the list.
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For PEI phase, the PEI service GetHobList() can be used to retrieve the pointer
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to the HOB list. For the DXE phase, the HOB list pointer can be retrieved through
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the EFI System Table by looking up theHOB list GUID in the System Configuration Table.
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Since the System Configuration Table does not exist that the time the DXE Core is
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launched, the DXE Core uses a global variable from the DXE Core Entry Point Library
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to manage the pointer to the HOB list.
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If the pointer to the HOB list is NULL, then ASSERT().
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@return The pointer to the HOB list.
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**/
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VOID *
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EFIAPI
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GetHobList (
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VOID
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);
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/**
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Returns the next instance of a HOB type from the starting HOB.
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This function searches the first instance of a HOB type from the starting HOB pointer.
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If there does not exist such HOB type from the starting HOB pointer, it will return NULL.
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In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer
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unconditionally: it returns HobStart back if HobStart itself meets the requirement;
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caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.
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If HobStart is NULL, then ASSERT().
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@param Type The HOB type to return.
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@param HobStart The starting HOB pointer to search from.
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@return The next instance of a HOB type from the starting HOB.
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**/
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VOID *
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EFIAPI
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GetNextHob (
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IN UINT16 Type,
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IN CONST VOID *HobStart
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);
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/**
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Returns the first instance of a HOB type among the whole HOB list.
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This function searches the first instance of a HOB type among the whole HOB list.
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If there does not exist such HOB type in the HOB list, it will return NULL.
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If the pointer to the HOB list is NULL, then ASSERT().
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@param Type The HOB type to return.
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@return The next instance of a HOB type from the starting HOB.
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**/
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VOID *
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EFIAPI
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GetFirstHob (
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IN UINT16 Type
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);
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/**
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Returns the next instance of the matched GUID HOB from the starting HOB.
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This function searches the first instance of a HOB from the starting HOB pointer.
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Such HOB should satisfy two conditions:
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its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.
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If there does not exist such HOB from the starting HOB pointer, it will return NULL.
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Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()
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to extract the data section and its size info respectively.
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In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer
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unconditionally: it returns HobStart back if HobStart itself meets the requirement;
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caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.
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If Guid is NULL, then ASSERT().
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If HobStart is NULL, then ASSERT().
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@param Guid The GUID to match with in the HOB list.
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@param HobStart A pointer to a Guid.
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@return The next instance of the matched GUID HOB from the starting HOB.
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**/
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VOID *
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EFIAPI
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GetNextGuidHob (
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IN CONST EFI_GUID *Guid,
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IN CONST VOID *HobStart
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);
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/**
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Returns the first instance of the matched GUID HOB among the whole HOB list.
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This function searches the first instance of a HOB among the whole HOB list.
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Such HOB should satisfy two conditions:
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its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.
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If there does not exist such HOB from the starting HOB pointer, it will return NULL.
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Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()
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to extract the data section and its size info respectively.
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If the pointer to the HOB list is NULL, then ASSERT().
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If Guid is NULL, then ASSERT().
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@param Guid The GUID to match with in the HOB list.
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@return The first instance of the matched GUID HOB among the whole HOB list.
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**/
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VOID *
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EFIAPI
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GetFirstGuidHob (
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IN CONST EFI_GUID *Guid
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);
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/**
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Get the system boot mode from the HOB list.
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This function returns the system boot mode information from the
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PHIT HOB in HOB list.
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If the pointer to the HOB list is NULL, then ASSERT().
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@param VOID
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@return The Boot Mode.
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**/
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EFI_BOOT_MODE
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EFIAPI
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GetBootModeHob (
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VOID
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);
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/**
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Builds a HOB for a loaded PE32 module.
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This function builds a HOB for a loaded PE32 module.
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It can only be invoked during PEI phase;
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for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
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If ModuleName is NULL, then ASSERT().
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If there is no additional space for HOB creation, then ASSERT().
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@param ModuleName The GUID File Name of the module.
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@param MemoryAllocationModule The 64 bit physical address of the module.
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@param ModuleLength The length of the module in bytes.
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@param EntryPoint The 64 bit physical address of the module entry point.
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**/
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VOID
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EFIAPI
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BuildModuleHob (
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IN CONST EFI_GUID *ModuleName,
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IN EFI_PHYSICAL_ADDRESS MemoryAllocationModule,
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IN UINT64 ModuleLength,
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IN EFI_PHYSICAL_ADDRESS EntryPoint
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);
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/**
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Builds a HOB that describes a chunk of system memory with Owner GUID.
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This function builds a HOB that describes a chunk of system memory.
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It can only be invoked during PEI phase;
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for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
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If there is no additional space for HOB creation, then ASSERT().
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@param ResourceType The type of resource described by this HOB.
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@param ResourceAttribute The resource attributes of the memory described by this HOB.
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@param PhysicalStart The 64 bit physical address of memory described by this HOB.
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@param NumberOfBytes The length of the memory described by this HOB in bytes.
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@param OwnerGUID GUID for the owner of this resource.
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**/
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VOID
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EFIAPI
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BuildResourceDescriptorWithOwnerHob (
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IN EFI_RESOURCE_TYPE ResourceType,
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IN EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute,
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IN EFI_PHYSICAL_ADDRESS PhysicalStart,
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IN UINT64 NumberOfBytes,
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IN EFI_GUID *OwnerGUID
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);
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/**
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Builds a HOB that describes a chunk of system memory.
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This function builds a HOB that describes a chunk of system memory.
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It can only be invoked during PEI phase;
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for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
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If there is no additional space for HOB creation, then ASSERT().
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@param ResourceType The type of resource described by this HOB.
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@param ResourceAttribute The resource attributes of the memory described by this HOB.
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@param PhysicalStart The 64 bit physical address of memory described by this HOB.
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@param NumberOfBytes The length of the memory described by this HOB in bytes.
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**/
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VOID
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EFIAPI
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BuildResourceDescriptorHob (
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IN EFI_RESOURCE_TYPE ResourceType,
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IN EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute,
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IN EFI_PHYSICAL_ADDRESS PhysicalStart,
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IN UINT64 NumberOfBytes
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);
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/**
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Builds a customized HOB tagged with a GUID for identification and returns
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the start address of GUID HOB data.
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This function builds a customized HOB tagged with a GUID for identification
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and returns the start address of GUID HOB data so that caller can fill the customized data.
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The HOB Header and Name field is already stripped.
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It can only be invoked during PEI phase;
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for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
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If Guid is NULL, then ASSERT().
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If there is no additional space for HOB creation, then ASSERT().
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If DataLength > (0xFFF8 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().
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HobLength is UINT16 and multiples of 8 bytes, so the max HobLength is 0xFFF8.
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@param Guid The GUID to tag the customized HOB.
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@param DataLength The size of the data payload for the GUID HOB.
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@retval NULL The GUID HOB could not be allocated.
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@retval others The start address of GUID HOB data.
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**/
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VOID *
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EFIAPI
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BuildGuidHob (
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IN CONST EFI_GUID *Guid,
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IN UINTN DataLength
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);
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/**
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Builds a customized HOB tagged with a GUID for identification, copies the input data to the HOB
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data field, and returns the start address of the GUID HOB data.
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This function builds a customized HOB tagged with a GUID for identification and copies the input
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data to the HOB data field and returns the start address of the GUID HOB data. It can only be
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invoked during PEI phase; for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
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The HOB Header and Name field is already stripped.
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It can only be invoked during PEI phase;
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for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
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If Guid is NULL, then ASSERT().
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If Data is NULL and DataLength > 0, then ASSERT().
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If there is no additional space for HOB creation, then ASSERT().
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If DataLength > (0xFFF8 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().
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HobLength is UINT16 and multiples of 8 bytes, so the max HobLength is 0xFFF8.
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@param Guid The GUID to tag the customized HOB.
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@param Data The data to be copied into the data field of the GUID HOB.
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@param DataLength The size of the data payload for the GUID HOB.
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@retval NULL The GUID HOB could not be allocated.
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@retval others The start address of GUID HOB data.
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**/
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VOID *
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EFIAPI
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BuildGuidDataHob (
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IN CONST EFI_GUID *Guid,
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IN VOID *Data,
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IN UINTN DataLength
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);
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/**
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Builds a Firmware Volume HOB.
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This function builds a Firmware Volume HOB.
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It can only be invoked during PEI phase;
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for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
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If there is no additional space for HOB creation, then ASSERT().
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If the FvImage buffer is not at its required alignment, then ASSERT().
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@param BaseAddress The base address of the Firmware Volume.
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@param Length The size of the Firmware Volume in bytes.
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**/
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VOID
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EFIAPI
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BuildFvHob (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length
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);
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/**
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Builds a EFI_HOB_TYPE_FV2 HOB.
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This function builds a EFI_HOB_TYPE_FV2 HOB.
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It can only be invoked during PEI phase;
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for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
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If there is no additional space for HOB creation, then ASSERT().
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If the FvImage buffer is not at its required alignment, then ASSERT().
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@param BaseAddress The base address of the Firmware Volume.
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@param Length The size of the Firmware Volume in bytes.
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@param FvName The name of the Firmware Volume.
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@param FileName The name of the file.
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**/
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VOID
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EFIAPI
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BuildFv2Hob (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length,
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IN CONST EFI_GUID *FvName,
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IN CONST EFI_GUID *FileName
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);
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/**
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Builds a EFI_HOB_TYPE_FV3 HOB.
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This function builds a EFI_HOB_TYPE_FV3 HOB.
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It can only be invoked during PEI phase;
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for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
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If there is no additional space for HOB creation, then ASSERT().
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If the FvImage buffer is not at its required alignment, then ASSERT().
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@param BaseAddress The base address of the Firmware Volume.
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@param Length The size of the Firmware Volume in bytes.
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@param AuthenticationStatus The authentication status.
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@param ExtractedFv TRUE if the FV was extracted as a file within
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another firmware volume. FALSE otherwise.
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@param FvName The name of the Firmware Volume.
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Valid only if IsExtractedFv is TRUE.
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@param FileName The name of the file.
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Valid only if IsExtractedFv is TRUE.
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**/
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VOID
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EFIAPI
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||
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BuildFv3Hob (
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||
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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||
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IN UINT64 Length,
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||
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IN UINT32 AuthenticationStatus,
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||
|
|
IN BOOLEAN ExtractedFv,
|
||
|
|
IN CONST EFI_GUID *FvName, OPTIONAL
|
||
|
|
IN CONST EFI_GUID *FileName OPTIONAL
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
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
|