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/** @file
Hand Off Block (HOB) definition.
The HOB is a memory data structure used to hand-off system information from
PEI to DXE (the next phase).
Copyright (c) 2006, Intel Corporation
All rights reserved. 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.
Module Name: Hob.h
@par Revision Reference:
These definitions are from Hand Off Block (HOB) Spec Version 0.9.
**/
#ifndef __HOB_H__
#define __HOB_H__
//
// Every Hob must start with this data structure.
//
typedef struct {
UINT16 HobType;
UINT16 HobLength;
UINT32 Reserved;
} EFI_HOB_GENERIC_HEADER;
//
// End of HOB List HOB
//
#define EFI_HOB_TYPE_END_OF_HOB_LIST 0xffff
//
// Handoff Information Table HOB
//
#define EFI_HOB_TYPE_HANDOFF 0x0001
#define EFI_HOB_HANDOFF_TABLE_VERSION 0x0009
typedef UINT32 EFI_BOOT_MODE;
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
UINT32 Version;
EFI_BOOT_MODE BootMode;
EFI_PHYSICAL_ADDRESS EfiMemoryTop;
EFI_PHYSICAL_ADDRESS EfiMemoryBottom;
EFI_PHYSICAL_ADDRESS EfiFreeMemoryTop;
EFI_PHYSICAL_ADDRESS EfiFreeMemoryBottom;
EFI_PHYSICAL_ADDRESS EfiEndOfHobList;
} EFI_HOB_HANDOFF_INFO_TABLE;
//
// Memory Descriptor HOB
//
#define EFI_HOB_TYPE_MEMORY_ALLOCATION 0x0002
typedef struct {
EFI_GUID Name;
EFI_PHYSICAL_ADDRESS MemoryBaseAddress;
UINT64 MemoryLength;
EFI_MEMORY_TYPE MemoryType;
UINT8 Reserved[4];
} EFI_HOB_MEMORY_ALLOCATION_HEADER;
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
EFI_HOB_MEMORY_ALLOCATION_HEADER AllocDescriptor;
//
// Additional data pertaining to the "Name" Guid memory
// may go here.
//
} EFI_HOB_MEMORY_ALLOCATION;
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
EFI_HOB_MEMORY_ALLOCATION_HEADER AllocDescriptor;
} EFI_HOB_MEMORY_ALLOCATION_BSP_STORE;
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
EFI_HOB_MEMORY_ALLOCATION_HEADER AllocDescriptor;
} EFI_HOB_MEMORY_ALLOCATION_STACK;
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
EFI_HOB_MEMORY_ALLOCATION_HEADER MemoryAllocationHeader;
EFI_GUID ModuleName;
EFI_PHYSICAL_ADDRESS EntryPoint;
} EFI_HOB_MEMORY_ALLOCATION_MODULE;
#define EFI_HOB_TYPE_RESOURCE_DESCRIPTOR 0x0003
typedef UINT32 EFI_RESOURCE_TYPE;
#define EFI_RESOURCE_SYSTEM_MEMORY 0
#define EFI_RESOURCE_MEMORY_MAPPED_IO 1
#define EFI_RESOURCE_IO 2
#define EFI_RESOURCE_FIRMWARE_DEVICE 3
#define EFI_RESOURCE_MEMORY_MAPPED_IO_PORT 4
#define EFI_RESOURCE_MEMORY_RESERVED 5
#define EFI_RESOURCE_IO_RESERVED 6
#define EFI_RESOURCE_MAX_MEMORY_TYPE 7
typedef UINT32 EFI_RESOURCE_ATTRIBUTE_TYPE;
#define EFI_RESOURCE_ATTRIBUTE_PRESENT 0x00000001
#define EFI_RESOURCE_ATTRIBUTE_INITIALIZED 0x00000002
#define EFI_RESOURCE_ATTRIBUTE_TESTED 0x00000004
#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_READ_PROTECTED 0x00000080
#define EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED 0x00000100
#define EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED 0x00000200
#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
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
EFI_GUID Owner;
EFI_RESOURCE_TYPE ResourceType;
EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute;
EFI_PHYSICAL_ADDRESS PhysicalStart;
UINT64 ResourceLength;
} EFI_HOB_RESOURCE_DESCRIPTOR;
//
// GUID Extension HOB
// The HobLength is variable as it includes the GUID specific data.
//
#define EFI_HOB_TYPE_GUID_EXTENSION 0x0004
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
EFI_GUID Name;
//
// Guid specific data goes here
//
} EFI_HOB_GUID_TYPE;
//
// Firmware Volume HOB
//
#define EFI_HOB_TYPE_FV 0x0005
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
EFI_PHYSICAL_ADDRESS BaseAddress;
UINT64 Length;
} EFI_HOB_FIRMWARE_VOLUME;
//
// CPU HOB
//
#define EFI_HOB_TYPE_CPU 0x0006
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
UINT8 SizeOfMemorySpace;
UINT8 SizeOfIoSpace;
UINT8 Reserved[6];
} EFI_HOB_CPU;
//
// PEI Core Memory Pool HOB
// The HobLength is variable as the HOB contains pool allocations by
// the PeiServices AllocatePool function
//
#define EFI_HOB_TYPE_PEI_MEMORY_POOL 0x0007
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
} EFI_HOB_MEMORY_POOL;
//
// Capsule volume HOB -- identical to a firmware volume
//
#define EFI_HOB_TYPE_CV 0x0008
typedef struct {
EFI_HOB_GENERIC_HEADER Header;
EFI_PHYSICAL_ADDRESS BaseAddress;
UINT64 Length;
} EFI_HOB_CAPSULE_VOLUME;
#define EFI_HOB_TYPE_UNUSED 0xFFFE
//
// 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_CPU *Cpu;
EFI_HOB_MEMORY_POOL *Pool;
EFI_HOB_CAPSULE_VOLUME *CapsuleVolume;
UINT8 *Raw;
} EFI_PEI_HOB_POINTERS;
#define GET_HOB_TYPE(Hob) ((Hob).Header->HobType)
#define GET_HOB_LENGTH(Hob) ((Hob).Header->HobLength)
#define GET_NEXT_HOB(Hob) ((Hob).Raw + GET_HOB_LENGTH (Hob))
#define END_OF_HOB_LIST(Hob) (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_END_OF_HOB_LIST)
//
// Get the data and data size field of GUID
//
#define GET_GUID_HOB_DATA(GuidHob) ((VOID *) (((UINT8 *) &((GuidHob)->Name)) + sizeof (EFI_GUID)))
#define GET_GUID_HOB_DATA_SIZE(GuidHob) (((GuidHob)->Header).HobLength - sizeof (EFI_HOB_GUID_TYPE))
#endif
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