path: root/MdePkg/Include/Pi/PiHob.h

/** @file
  HOB related definitions in PI.

Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

  @par Revision Reference:
  PI Version 1.6

**/

#ifndef __PI_HOB_H__
#define __PI_HOB_H__

//
// HobType of EFI_HOB_GENERIC_HEADER.
//
#define EFI_HOB_TYPE_HANDOFF              0x0001
#define EFI_HOB_TYPE_MEMORY_ALLOCATION    0x0002
#define EFI_HOB_TYPE_RESOURCE_DESCRIPTOR  0x0003
#define EFI_HOB_TYPE_GUID_EXTENSION       0x0004
#define EFI_HOB_TYPE_FV                   0x0005
#define EFI_HOB_TYPE_CPU                  0x0006
#define EFI_HOB_TYPE_MEMORY_POOL          0x0007
#define EFI_HOB_TYPE_FV2                  0x0009
#define EFI_HOB_TYPE_LOAD_PEIM_UNUSED     0x000A
#define EFI_HOB_TYPE_UEFI_CAPSULE         0x000B
#define EFI_HOB_TYPE_FV3                  0x000C
#define EFI_HOB_TYPE_UNUSED               0xFFFE
#define EFI_HOB_TYPE_END_OF_HOB_LIST      0xFFFF

///
/// Describes the format and size of the data inside the HOB.
/// All HOBs must contain this generic HOB header.
///
typedef struct {
  ///
  /// Identifies the HOB data structure type.
  ///
  UINT16    HobType;
  ///
  /// The length in bytes of the HOB.
  ///
  UINT16    HobLength;
  ///
  /// This field must always be set to zero.
  ///
  UINT32    Reserved;
} EFI_HOB_GENERIC_HEADER;


///
/// Value of version  in EFI_HOB_HANDOFF_INFO_TABLE.
///
#define EFI_HOB_HANDOFF_TABLE_VERSION 0x0009

///
/// Contains general state information used by the HOB producer phase.
/// This HOB must be the first one in the HOB list.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_HANDOFF.
  ///
  EFI_HOB_GENERIC_HEADER  Header;
  ///
  /// The version number pertaining to the PHIT HOB definition.
  /// This value is four bytes in length to provide an 8-byte aligned entry
  /// when it is combined with the 4-byte BootMode.
  ///
  UINT32                  Version;
  ///
  /// The system boot mode as determined during the HOB producer phase.
  ///
  EFI_BOOT_MODE           BootMode;
  ///
  /// The highest address location of memory that is allocated for use by the HOB producer
  /// phase. This address must be 4-KB aligned to meet page restrictions of UEFI.
  ///
  EFI_PHYSICAL_ADDRESS    EfiMemoryTop;
  ///
  /// The lowest address location of memory that is allocated for use by the HOB producer phase.
  ///
  EFI_PHYSICAL_ADDRESS    EfiMemoryBottom;
  ///
  /// The highest address location of free memory that is currently available
  /// for use by the HOB producer phase.
  ///
  EFI_PHYSICAL_ADDRESS    EfiFreeMemoryTop;
  ///
  /// The lowest address location of free memory that is available for use by the HOB producer phase.
  ///
  EFI_PHYSICAL_ADDRESS    EfiFreeMemoryBottom;
  ///
  /// The end of the HOB list.
  ///
  EFI_PHYSICAL_ADDRESS    EfiEndOfHobList;
} EFI_HOB_HANDOFF_INFO_TABLE;

///
/// EFI_HOB_MEMORY_ALLOCATION_HEADER describes the
/// various attributes of the logical memory allocation. The type field will be used for
/// subsequent inclusion in the UEFI memory map.
///
typedef struct {
  ///
  /// A GUID that defines the memory allocation region's type and purpose, as well as
  /// other fields within the memory allocation HOB. This GUID is used to define the
  /// additional data within the HOB that may be present for the memory allocation HOB.
  /// Type EFI_GUID is defined in InstallProtocolInterface() in the UEFI 2.0
  /// specification.
  ///
  EFI_GUID              Name;

  ///
  /// The base address of memory allocated by this HOB. Type
  /// EFI_PHYSICAL_ADDRESS is defined in AllocatePages() in the UEFI 2.0
  /// specification.
  ///
  EFI_PHYSICAL_ADDRESS  MemoryBaseAddress;

  ///
  /// The length in bytes of memory allocated by this HOB.
  ///
  UINT64                MemoryLength;

  ///
  /// Defines the type of memory allocated by this HOB. The memory type definition
  /// follows the EFI_MEMORY_TYPE definition. Type EFI_MEMORY_TYPE is defined
  /// in AllocatePages() in the UEFI 2.0 specification.
  ///
  EFI_MEMORY_TYPE       MemoryType;

  ///
  /// Padding for Itanium processor family
  ///
  UINT8                 Reserved[4];
} EFI_HOB_MEMORY_ALLOCATION_HEADER;

///
/// Describes all memory ranges used during the HOB producer
/// phase that exist outside the HOB list. This HOB type
/// describes how memory is used, not the physical attributes of memory.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_MEMORY_ALLOCATION.
  ///
  EFI_HOB_GENERIC_HEADER            Header;
  ///
  /// An instance of the EFI_HOB_MEMORY_ALLOCATION_HEADER that describes the
  /// various attributes of the logical memory allocation.
  ///
  EFI_HOB_MEMORY_ALLOCATION_HEADER  AllocDescriptor;
  //
  // Additional data pertaining to the "Name" Guid memory
  // may go here.
  //
} EFI_HOB_MEMORY_ALLOCATION;


///
/// Describes the memory stack that is produced by the HOB producer
/// phase and upon which all post-memory-installed executable
/// content in the HOB producer phase is executing.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_MEMORY_ALLOCATION.
  ///
  EFI_HOB_GENERIC_HEADER            Header;
  ///
  /// An instance of the EFI_HOB_MEMORY_ALLOCATION_HEADER that describes the
  /// various attributes of the logical memory allocation.
  ///
  EFI_HOB_MEMORY_ALLOCATION_HEADER  AllocDescriptor;
} EFI_HOB_MEMORY_ALLOCATION_STACK;

///
/// Defines the location of the boot-strap
/// processor (BSP) BSPStore ("Backing Store Pointer Store").
/// This HOB is valid for the Itanium processor family only
/// register overflow store.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_MEMORY_ALLOCATION.
  ///
  EFI_HOB_GENERIC_HEADER            Header;
  ///
  /// An instance of the EFI_HOB_MEMORY_ALLOCATION_HEADER that describes the
  /// various attributes of the logical memory allocation.
  ///
  EFI_HOB_MEMORY_ALLOCATION_HEADER  AllocDescriptor;
} EFI_HOB_MEMORY_ALLOCATION_BSP_STORE;

///
/// Defines the location and entry point of the HOB consumer phase.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_MEMORY_ALLOCATION.
  ///
  EFI_HOB_GENERIC_HEADER            Header;
  ///
  /// An instance of the EFI_HOB_MEMORY_ALLOCATION_HEADER that describes the
  /// various attributes of the logical memory allocation.
  ///
  EFI_HOB_MEMORY_ALLOCATION_HEADER  MemoryAllocationHeader;
  ///
  /// The GUID specifying the values of the firmware file system name
  /// that contains the HOB consumer phase component.
  ///
  EFI_GUID                          ModuleName;
  ///
  /// The address of the memory-mapped firmware volume
  /// that contains the HOB consumer phase firmware file.
  ///
  EFI_PHYSICAL_ADDRESS              EntryPoint;
} EFI_HOB_MEMORY_ALLOCATION_MODULE;

///
/// The resource type.
///
typedef UINT32 EFI_RESOURCE_TYPE;

//
// Value of ResourceType in EFI_HOB_RESOURCE_DESCRIPTOR.
//
#define EFI_RESOURCE_SYSTEM_MEMORY          0x00000000
#define EFI_RESOURCE_MEMORY_MAPPED_IO       0x00000001
#define EFI_RESOURCE_IO                     0x00000002
#define EFI_RESOURCE_FIRMWARE_DEVICE        0x00000003
#define EFI_RESOURCE_MEMORY_MAPPED_IO_PORT  0x00000004
#define EFI_RESOURCE_MEMORY_RESERVED        0x00000005
#define EFI_RESOURCE_IO_RESERVED            0x00000006
#define EFI_RESOURCE_MAX_MEMORY_TYPE        0x00000007

///
/// A type of recount attribute type.
///
typedef UINT32 EFI_RESOURCE_ATTRIBUTE_TYPE;

//
// These types can be ORed together as needed.
//
// The following attributes are used to describe settings
//
#define EFI_RESOURCE_ATTRIBUTE_PRESENT                  0x00000001
#define EFI_RESOURCE_ATTRIBUTE_INITIALIZED              0x00000002
#define EFI_RESOURCE_ATTRIBUTE_TESTED                   0x00000004
#define EFI_RESOURCE_ATTRIBUTE_READ_PROTECTED           0x00000080
//
// This is typically used as memory cacheability attribute today.
// NOTE: Since PI spec 1.4, please use EFI_RESOURCE_ATTRIBUTE_READ_ONLY_PROTECTED
// as Physical write protected attribute, and EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED
// means Memory cacheability attribute: The memory supports being programmed with
// a writeprotected cacheable attribute.
//
#define EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED          0x00000100
#define EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED      0x00000200
#define EFI_RESOURCE_ATTRIBUTE_PERSISTENT               0x00800000
//
// The rest of the attributes are used to describe capabilities
//
#define EFI_RESOURCE_ATTRIBUTE_SINGLE_BIT_ECC           0x00000008
#define EFI_RESOURCE_ATTRIBUTE_MULTIPLE_BIT_ECC         0x00000010
#define EFI_RESOURCE_ATTRIBUTE_ECC_RESERVED_1           0x00000020
#define EFI_RESOURCE_ATTRIBUTE_ECC_RESERVED_2           0x00000040
#define EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE              0x00000400
#define EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE        0x00000800
#define EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE  0x00001000
#define EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE     0x00002000
#define EFI_RESOURCE_ATTRIBUTE_16_BIT_IO                0x00004000
#define EFI_RESOURCE_ATTRIBUTE_32_BIT_IO                0x00008000
#define EFI_RESOURCE_ATTRIBUTE_64_BIT_IO                0x00010000
#define EFI_RESOURCE_ATTRIBUTE_UNCACHED_EXPORTED        0x00020000
#define EFI_RESOURCE_ATTRIBUTE_READ_PROTECTABLE         0x00100000
//
// This is typically used as memory cacheability attribute today.
// NOTE: Since PI spec 1.4, please use EFI_RESOURCE_ATTRIBUTE_READ_ONLY_PROTECTABLE
// as Memory capability attribute: The memory supports being protected from processor
// writes, and EFI_RESOURCE_ATTRIBUTE_WRITE_PROTEC TABLE means Memory cacheability attribute:
// The memory supports being programmed with a writeprotected cacheable attribute.
//
#define EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTABLE        0x00200000
#define EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTABLE    0x00400000
#define EFI_RESOURCE_ATTRIBUTE_PERSISTABLE              0x01000000

#define EFI_RESOURCE_ATTRIBUTE_READ_ONLY_PROTECTED      0x00040000
#define EFI_RESOURCE_ATTRIBUTE_READ_ONLY_PROTECTABLE    0x00080000

//
// Physical memory relative reliability attribute. This
// memory provides higher reliability relative to other
// memory in the system. If all memory has the same
// reliability, then this bit is not used.
//
#define EFI_RESOURCE_ATTRIBUTE_MORE_RELIABLE            0x02000000

///
/// Describes the resource properties of all fixed,
/// nonrelocatable resource ranges found on the processor
/// host bus during the HOB producer phase.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_RESOURCE_DESCRIPTOR.
  ///
  EFI_HOB_GENERIC_HEADER      Header;
  ///
  /// A GUID representing the owner of the resource. This GUID is used by HOB
  /// consumer phase components to correlate device ownership of a resource.
  ///
  EFI_GUID                    Owner;
  ///
  /// The resource type enumeration as defined by EFI_RESOURCE_TYPE.
  ///
  EFI_RESOURCE_TYPE           ResourceType;
  ///
  /// Resource attributes as defined by EFI_RESOURCE_ATTRIBUTE_TYPE.
  ///
  EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute;
  ///
  /// The physical start address of the resource region.
  ///
  EFI_PHYSICAL_ADDRESS        PhysicalStart;
  ///
  /// The number of bytes of the resource region.
  ///
  UINT64                      ResourceLength;
} EFI_HOB_RESOURCE_DESCRIPTOR;

///
/// Allows writers of executable content in the HOB producer phase to
/// maintain and manage HOBs with specific GUID.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_GUID_EXTENSION.
  ///
  EFI_HOB_GENERIC_HEADER      Header;
  ///
  /// A GUID that defines the contents of this HOB.
  ///
  EFI_GUID                    Name;
  //
  // Guid specific data goes here
  //
} EFI_HOB_GUID_TYPE;

///
/// Details the location of firmware volumes that contain firmware files.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_FV.
  ///
  EFI_HOB_GENERIC_HEADER Header;
  ///
  /// The physical memory-mapped base address of the firmware volume.
  ///
  EFI_PHYSICAL_ADDRESS   BaseAddress;
  ///
  /// The length in bytes of the firmware volume.
  ///
  UINT64                 Length;
} EFI_HOB_FIRMWARE_VOLUME;

///
/// Details the location of a firmware volume that was extracted
/// from a file within another firmware volume.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_FV2.
  ///
  EFI_HOB_GENERIC_HEADER  Header;
  ///
  /// The physical memory-mapped base address of the firmware volume.
  ///
  EFI_PHYSICAL_ADDRESS    BaseAddress;
  ///
  /// The length in bytes of the firmware volume.
  ///
  UINT64                  Length;
  ///
  /// The name of the firmware volume.
  ///
  EFI_GUID                FvName;
  ///
  /// The name of the firmware file that contained this firmware volume.
  ///
  EFI_GUID                FileName;
} EFI_HOB_FIRMWARE_VOLUME2;

///
/// Details the location of a firmware volume that was extracted
/// from a file within another firmware volume.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_FV3.
  ///
  EFI_HOB_GENERIC_HEADER  Header;
  ///
  /// The physical memory-mapped base address of the firmware volume.
  ///
  EFI_PHYSICAL_ADDRESS    BaseAddress;
  ///
  /// The length in bytes of the firmware volume.
  ///
  UINT64                  Length;
  ///
  /// The authentication status.
  ///
  UINT32                  AuthenticationStatus;
  ///
  /// TRUE if the FV was extracted as a file within another firmware volume.
  /// FALSE otherwise.
  ///
  BOOLEAN                 ExtractedFv;
  ///
  /// The name of the firmware volume.
  /// Valid only if IsExtractedFv is TRUE.
  ///
  EFI_GUID                FvName;
  ///
  /// The name of the firmware file that contained this firmware volume.
  /// Valid only if IsExtractedFv is TRUE.
  ///
  EFI_GUID                FileName;
} EFI_HOB_FIRMWARE_VOLUME3;

///
/// Describes processor information, such as address space and I/O space capabilities.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_CPU.
  ///
  EFI_HOB_GENERIC_HEADER  Header;
  ///
  /// Identifies the maximum physical memory addressability of the processor.
  ///
  UINT8                   SizeOfMemorySpace;
  ///
  /// Identifies the maximum physical I/O addressability of the processor.
  ///
  UINT8                   SizeOfIoSpace;
  ///
  /// This field will always be set to zero.
  ///
  UINT8                   Reserved[6];
} EFI_HOB_CPU;


///
/// Describes pool memory allocations.
///
typedef struct {
  ///
  /// The HOB generic header. Header.HobType = EFI_HOB_TYPE_MEMORY_POOL.
  ///
  EFI_HOB_GENERIC_HEADER  Header;
} EFI_HOB_MEMORY_POOL;

///
/// Each UEFI capsule HOB details the location of a UEFI capsule. It includes a base address and length
/// which is based upon memory blocks with a EFI_CAPSULE_HEADER and the associated
/// CapsuleImageSize-based payloads. These HOB's shall be created by the PEI PI firmware
/// sometime after the UEFI UpdateCapsule service invocation with the
/// CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE flag set in the EFI_CAPSULE_HEADER.
///
typedef struct {
  ///
  /// The HOB generic header where Header.HobType = EFI_HOB_TYPE_UEFI_CAPSULE.
  ///
  EFI_HOB_GENERIC_HEADER Header;

  ///
  /// The physical memory-mapped base address of an UEFI capsule. This value is set to
  /// point to the base of the contiguous memory of the UEFI capsule.
  /// The length of the contiguous memory in bytes.
  ///
  EFI_PHYSICAL_ADDRESS   BaseAddress;
  UINT64                 Length;
} EFI_HOB_UEFI_CAPSULE;

///
/// Union of all the possible HOB Types.
///
typedef union {
  EFI_HOB_GENERIC_HEADER              *Header;
  EFI_HOB_HANDOFF_INFO_TABLE          *HandoffInformationTable;
  EFI_HOB_MEMORY_ALLOCATION           *MemoryAllocation;
  EFI_HOB_MEMORY_ALLOCATION_BSP_STORE *MemoryAllocationBspStore;
  EFI_HOB_MEMORY_ALLOCATION_STACK     *MemoryAllocationStack;
  EFI_HOB_MEMORY_ALLOCATION_MODULE    *MemoryAllocationModule;
  EFI_HOB_RESOURCE_DESCRIPTOR         *ResourceDescriptor;
  EFI_HOB_GUID_TYPE                   *Guid;
  EFI_HOB_FIRMWARE_VOLUME             *FirmwareVolume;
  EFI_HOB_FIRMWARE_VOLUME2            *FirmwareVolume2;
  EFI_HOB_FIRMWARE_VOLUME3            *FirmwareVolume3;
  EFI_HOB_CPU                         *Cpu;
  EFI_HOB_MEMORY_POOL                 *Pool;
  EFI_HOB_UEFI_CAPSULE                *Capsule;
  UINT8                               *Raw;
} EFI_PEI_HOB_POINTERS;


#endif