MdePkg/Include/Pi/PiHob.h

   1 /** @file
   2   HOB related definitions in PI.
   3
   4   Copyright (c) 2006 - 2008, Intel Corporation
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13   @par Revision Reference:
  14   Version 1.0.
  15
  16 **/
  17
  18 #ifndef __PI_HOB_H__
  19 #define __PI_HOB_H__
  20
  21 #include <ProcessorBind.h>
  22 #include <Pi/PiBootMode.h>
  23 #include <Uefi/UefiBaseType.h>
  24 #include <Uefi/UefiMultiPhase.h>
  25
  26 //
  27 // HobType of EFI_HOB_GENERIC_HEADER.
  28 //
  29 #define EFI_HOB_TYPE_HANDOFF              0x0001
  30 #define EFI_HOB_TYPE_MEMORY_ALLOCATION    0x0002
  31 #define EFI_HOB_TYPE_RESOURCE_DESCRIPTOR  0x0003
  32 #define EFI_HOB_TYPE_GUID_EXTENSION       0x0004
  33 #define EFI_HOB_TYPE_FV                   0x0005
  34 #define EFI_HOB_TYPE_CPU                  0x0006
  35 #define EFI_HOB_TYPE_MEMORY_POOL          0x0007
  36 #define EFI_HOB_TYPE_FV2                  0x0009
  37 #define EFI_HOB_TYPE_LOAD_PEIM            0x000A
  38 #define EFI_HOB_TYPE_UNUSED               0xFFFE
  39 #define EFI_HOB_TYPE_END_OF_HOB_LIST      0xFFFF
  40
  41 ///
  42 /// Describes the format and size of the data inside the HOB.
  43 /// All HOBs must contain this generic HOB header.
  44 ///
  45 typedef struct {
  46   UINT16    HobType;
  47   UINT16    HobLength;
  48   UINT32    Reserved;
  49 } EFI_HOB_GENERIC_HEADER;
  50
  51
  52 ///
  53 /// Value of version ofinEFI_HOB_HANDOFF_INFO_TABLE.
  54 ///
  55 #define EFI_HOB_HANDOFF_TABLE_VERSION 0x0009
  56
  57 ///
  58 /// Contains general state information used by the HOB producer phase.
  59 /// This HOB must be the first one in the HOB list.
  60 ///
  61 typedef struct {
  62   EFI_HOB_GENERIC_HEADER  Header;
  63   UINT32                  Version;
  64   EFI_BOOT_MODE           BootMode;
  65   EFI_PHYSICAL_ADDRESS    EfiMemoryTop;
  66   EFI_PHYSICAL_ADDRESS    EfiMemoryBottom;
  67   EFI_PHYSICAL_ADDRESS    EfiFreeMemoryTop;
  68   EFI_PHYSICAL_ADDRESS    EfiFreeMemoryBottom;
  69   EFI_PHYSICAL_ADDRESS    EfiEndOfHobList;
  70 } EFI_HOB_HANDOFF_INFO_TABLE;
  71
  72 ///
  73 /// EFI_HOB_MEMORY_ALLOCATION_HEADER describes the
  74 /// various attributes of the logical memory allocation. The type field will be used for
  75 /// subsequent inclusion in the UEFI memory map.
  76 ///
  77 typedef struct {
  78   ///
  79   /// A GUID that defines the memory allocation region¡¯s type and purpose, as well as
  80   /// other fields within the memory allocation HOB. This GUID is used to define the
  81   /// additional data within the HOB that may be present for the memory allocation HOB.
  82   /// Type EFI_GUID is defined in InstallProtocolInterface() in the UEFI 2.0
  83   /// specification.
  84   ///
  85   EFI_GUID              Name;
  86
  87   /// The base address of memory allocated by this HOB. Type
  88   /// EFI_PHYSICAL_ADDRESS is defined in AllocatePages() in the UEFI 2.0
  89   /// specification.
  90   EFI_PHYSICAL_ADDRESS  MemoryBaseAddress;
  91
  92   ///
  93   /// The length in bytes of memory allocated by this HOB.
  94   ///
  95   UINT64                MemoryLength;
  96
  97   ///
  98   /// Defines the type of memory allocated by this HOB. The memory type definition
  99   /// follows the EFI_MEMORY_TYPE definition. Type EFI_MEMORY_TYPE is defined
 100   /// in AllocatePages() in the UEFI 2.0 specification.
 101   ///
 102   EFI_MEMORY_TYPE       MemoryType;
 103
 104   ///
 105   /// Padding for Itanium processor family
 106   ///
 107   UINT8                 Reserved[4];
 108 } EFI_HOB_MEMORY_ALLOCATION_HEADER;
 109
 110 ///
 111 /// Describes all memory ranges used during the HOB producer
 112 /// phase that exist outside the HOB list. This HOB type
 113 /// describes how memory is used,
 114 /// not the physical attributes of memory.
 115 ///
 116 typedef struct {
 117   EFI_HOB_GENERIC_HEADER            Header;
 118   EFI_HOB_MEMORY_ALLOCATION_HEADER  AllocDescriptor;
 119   //
 120   // Additional data pertaining to the "Name" Guid memory
 121   // may go here.
 122   //
 123 } EFI_HOB_MEMORY_ALLOCATION;
 124
 125
 126 ///
 127 /// Describes the memory stack that is produced by the HOB producer
 128 /// phase and upon which all postmemory-installed executable
 129 /// content in the HOB producer phase is executing.
 130 ///
 131 typedef struct {
 132   EFI_HOB_GENERIC_HEADER            Header;
 133   EFI_HOB_MEMORY_ALLOCATION_HEADER  AllocDescriptor;
 134 } EFI_HOB_MEMORY_ALLOCATION_STACK;
 135
 136 ///
 137 /// Defines the location of the boot-strap
 138 /// processor (BSP) BSPStore ("Backing Store Pointer Store").
 139 /// This HOB is valid for the Itanium processor family only
 140 /// register overflow store.
 141 ///
 142 typedef struct {
 143   EFI_HOB_GENERIC_HEADER            Header;
 144   EFI_HOB_MEMORY_ALLOCATION_HEADER  AllocDescriptor;
 145 } EFI_HOB_MEMORY_ALLOCATION_BSP_STORE;
 146
 147 ///
 148 /// Defines the location and entry point of the HOB consumer phase.
 149 ///
 150 typedef struct {
 151   EFI_HOB_GENERIC_HEADER            Header;
 152   EFI_HOB_MEMORY_ALLOCATION_HEADER  MemoryAllocationHeader;
 153   EFI_GUID                          ModuleName;
 154   EFI_PHYSICAL_ADDRESS              EntryPoint;
 155 } EFI_HOB_MEMORY_ALLOCATION_MODULE;
 156
 157 ///
 158 /// type of Recount type
 159 ///
 160 typedef UINT32 EFI_RESOURCE_TYPE;
 161
 162 //
 163 // Value of ResourceType in EFI_HOB_RESOURCE_DESCRIPTOR.
 164 //
 165 #define EFI_RESOURCE_SYSTEM_MEMORY          0x00000000
 166 #define EFI_RESOURCE_MEMORY_MAPPED_IO       0x00000001
 167 #define EFI_RESOURCE_IO                     0x00000002
 168 #define EFI_RESOURCE_FIRMWARE_DEVICE        0x00000003
 169 #define EFI_RESOURCE_MEMORY_MAPPED_IO_PORT  0x00000004
 170 #define EFI_RESOURCE_MEMORY_RESERVED        0x00000005
 171 #define EFI_RESOURCE_IO_RESERVED            0x00000006
 172 #define EFI_RESOURCE_MAX_MEMORY_TYPE        0x00000007
 173
 174 ///
 175 /// type of recount attribute type
 176 ///
 177 typedef UINT32 EFI_RESOURCE_ATTRIBUTE_TYPE;
 178
 179 //
 180 // These types can be ORed together as needed.
 181 //
 182 // The first three enumerations describe settings
 183 //
 184 #define EFI_RESOURCE_ATTRIBUTE_PRESENT              0x00000001
 185 #define EFI_RESOURCE_ATTRIBUTE_INITIALIZED          0x00000002
 186 #define EFI_RESOURCE_ATTRIBUTE_TESTED               0x00000004
 187 //
 188 // The rest of the settings describe capabilities
 189 //
 190 #define EFI_RESOURCE_ATTRIBUTE_SINGLE_BIT_ECC           0x00000008
 191 #define EFI_RESOURCE_ATTRIBUTE_MULTIPLE_BIT_ECC         0x00000010
 192 #define EFI_RESOURCE_ATTRIBUTE_ECC_RESERVED_1           0x00000020
 193 #define EFI_RESOURCE_ATTRIBUTE_ECC_RESERVED_2           0x00000040
 194 #define EFI_RESOURCE_ATTRIBUTE_READ_PROTECTED           0x00000080
 195 #define EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED          0x00000100
 196 #define EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED      0x00000200
 197 #define EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE              0x00000400
 198 #define EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE        0x00000800
 199 #define EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE  0x00001000
 200 #define EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE     0x00002000
 201 #define EFI_RESOURCE_ATTRIBUTE_16_BIT_IO                0x00004000
 202 #define EFI_RESOURCE_ATTRIBUTE_32_BIT_IO                0x00008000
 203 #define EFI_RESOURCE_ATTRIBUTE_64_BIT_IO                0x00010000
 204 #define EFI_RESOURCE_ATTRIBUTE_UNCACHED_EXPORTED        0x00020000
 205
 206 ///
 207 /// Describes the resource properties of all fixed,
 208 /// nonrelocatable resource ranges found on the processor
 209 /// host bus during the HOB producer phase.
 210 ///
 211 typedef struct {
 212   EFI_HOB_GENERIC_HEADER      Header;
 213   EFI_GUID                    Owner;
 214   EFI_RESOURCE_TYPE           ResourceType;
 215   EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute;
 216   EFI_PHYSICAL_ADDRESS        PhysicalStart;
 217   UINT64                      ResourceLength;
 218 } EFI_HOB_RESOURCE_DESCRIPTOR;
 219
 220 ///
 221 /// Allows writers of executable content in the HOB producer phase to
 222 /// maintain and manage HOBs with specific GUID.
 223 ///
 224 typedef struct {
 225   EFI_HOB_GENERIC_HEADER      Header;
 226   EFI_GUID                    Name;
 227
 228   ///
 229   /// Guid specific data goes here
 230   ///
 231 } EFI_HOB_GUID_TYPE;
 232
 233 ///
 234 /// Details the location of firmware volumes that contain firmware files.
 235 ///
 236 typedef struct {
 237   EFI_HOB_GENERIC_HEADER Header;
 238   EFI_PHYSICAL_ADDRESS   BaseAddress;
 239   UINT64                 Length;
 240 } EFI_HOB_FIRMWARE_VOLUME;
 241
 242 ///
 243 /// Details the location of a firmware volume which was extracted
 244 /// from a file within another firmware volume.
 245 ///
 246 typedef struct {
 247   EFI_HOB_GENERIC_HEADER  Header;
 248   EFI_PHYSICAL_ADDRESS    BaseAddress;
 249   UINT64                  Length;
 250   EFI_GUID                FvName;
 251   EFI_GUID                FileName;
 252 } EFI_HOB_FIRMWARE_VOLUME2;
 253
 254
 255 ///
 256 /// Describes processor information, such as address space and I/O space capabilities.
 257 ///
 258 typedef struct {
 259   EFI_HOB_GENERIC_HEADER  Header;
 260   UINT8                   SizeOfMemorySpace;
 261   UINT8                   SizeOfIoSpace;
 262   UINT8                   Reserved[6];
 263 } EFI_HOB_CPU;
 264
 265
 266 ///
 267 /// Describes pool memory allocations.
 268 ///
 269 typedef struct {
 270   EFI_HOB_GENERIC_HEADER  Header;
 271 } EFI_HOB_MEMORY_POOL;
 272
 273 ///
 274 /// Union of all the possible HOB Types
 275 ///
 276 typedef union {
 277   EFI_HOB_GENERIC_HEADER              *Header;
 278   EFI_HOB_HANDOFF_INFO_TABLE          *HandoffInformationTable;
 279   EFI_HOB_MEMORY_ALLOCATION           *MemoryAllocation;
 280   EFI_HOB_MEMORY_ALLOCATION_BSP_STORE *MemoryAllocationBspStore;
 281   EFI_HOB_MEMORY_ALLOCATION_STACK     *MemoryAllocationStack;
 282   EFI_HOB_MEMORY_ALLOCATION_MODULE    *MemoryAllocationModule;
 283   EFI_HOB_RESOURCE_DESCRIPTOR         *ResourceDescriptor;
 284   EFI_HOB_GUID_TYPE                   *Guid;
 285   EFI_HOB_FIRMWARE_VOLUME             *FirmwareVolume;
 286   EFI_HOB_FIRMWARE_VOLUME2            *FirmwareVolume2;
 287   EFI_HOB_CPU                         *Cpu;
 288   EFI_HOB_MEMORY_POOL                 *Pool;
 289   UINT8                               *Raw;
 290 } EFI_PEI_HOB_POINTERS;
 291
 292
 293 #endif