diff --git a/src/vendorcode/intel/edk2/edk2-stable202005/MdePkg/Include/IndustryStandard/Pci22.h b/src/vendorcode/intel/edk2/edk2-stable202005/MdePkg/Include/IndustryStandard/Pci22.h
new file mode 100644
index 0000000..69e15f7
--- /dev/null
+++ b/src/vendorcode/intel/edk2/edk2-stable202005/MdePkg/Include/IndustryStandard/Pci22.h
@@ -0,0 +1,861 @@
+/** @file
+  Support for PCI 2.2 standard.
+
+  This file includes the definitions in the following specifications,
+    PCI Local Bus Specification, 2.2
+    PCI-to-PCI Bridge Architecture Specification, Revision 1.2
+    PC Card Standard, 8.0
+    PCI Power Management Interface Specification, Revision 1.2
+
+  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2014 - 2015, Hewlett-Packard Development Company, L.P.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _PCI22_H_
+#define _PCI22_H_
+
+#define PCI_MAX_BUS     255
+#define PCI_MAX_DEVICE  31
+#define PCI_MAX_FUNC    7
+
+#pragma pack(1)
+
+///
+/// Common header region in PCI Configuration Space
+/// Section 6.1, PCI Local Bus Specification, 2.2
+///
+typedef struct {
+  UINT16  VendorId;
+  UINT16  DeviceId;
+  UINT16  Command;
+  UINT16  Status;
+  UINT8   RevisionID;
+  UINT8   ClassCode[3];
+  UINT8   CacheLineSize;
+  UINT8   LatencyTimer;
+  UINT8   HeaderType;
+  UINT8   BIST;
+} PCI_DEVICE_INDEPENDENT_REGION;
+
+///
+/// PCI Device header region in PCI Configuration Space
+/// Section 6.1, PCI Local Bus Specification, 2.2
+///
+typedef struct {
+  UINT32  Bar[6];
+  UINT32  CISPtr;
+  UINT16  SubsystemVendorID;
+  UINT16  SubsystemID;
+  UINT32  ExpansionRomBar;
+  UINT8   CapabilityPtr;
+  UINT8   Reserved1[3];
+  UINT32  Reserved2;
+  UINT8   InterruptLine;
+  UINT8   InterruptPin;
+  UINT8   MinGnt;
+  UINT8   MaxLat;
+} PCI_DEVICE_HEADER_TYPE_REGION;
+
+///
+/// PCI Device Configuration Space
+/// Section 6.1, PCI Local Bus Specification, 2.2
+///
+typedef struct {
+  PCI_DEVICE_INDEPENDENT_REGION Hdr;
+  PCI_DEVICE_HEADER_TYPE_REGION Device;
+} PCI_TYPE00;
+
+///
+/// PCI-PCI Bridge header region in PCI Configuration Space
+/// Section 3.2, PCI-PCI Bridge Architecture, Version 1.2
+///
+typedef struct {
+  UINT32  Bar[2];
+  UINT8   PrimaryBus;
+  UINT8   SecondaryBus;
+  UINT8   SubordinateBus;
+  UINT8   SecondaryLatencyTimer;
+  UINT8   IoBase;
+  UINT8   IoLimit;
+  UINT16  SecondaryStatus;
+  UINT16  MemoryBase;
+  UINT16  MemoryLimit;
+  UINT16  PrefetchableMemoryBase;
+  UINT16  PrefetchableMemoryLimit;
+  UINT32  PrefetchableBaseUpper32;
+  UINT32  PrefetchableLimitUpper32;
+  UINT16  IoBaseUpper16;
+  UINT16  IoLimitUpper16;
+  UINT8   CapabilityPtr;
+  UINT8   Reserved[3];
+  UINT32  ExpansionRomBAR;
+  UINT8   InterruptLine;
+  UINT8   InterruptPin;
+  UINT16  BridgeControl;
+} PCI_BRIDGE_CONTROL_REGISTER;
+
+///
+/// PCI-to-PCI Bridge Configuration Space
+/// Section 3.2, PCI-PCI Bridge Architecture, Version 1.2
+///
+typedef struct {
+  PCI_DEVICE_INDEPENDENT_REGION Hdr;
+  PCI_BRIDGE_CONTROL_REGISTER   Bridge;
+} PCI_TYPE01;
+
+typedef union {
+  PCI_TYPE00  Device;
+  PCI_TYPE01  Bridge;
+} PCI_TYPE_GENERIC;
+
+///
+/// CardBus Controller Configuration Space,
+/// Section 4.5.1, PC Card Standard. 8.0
+///
+typedef struct {
+  UINT32  CardBusSocketReg;     ///< Cardbus Socket/ExCA Base
+  UINT8   Cap_Ptr;
+  UINT8   Reserved;
+  UINT16  SecondaryStatus;      ///< Secondary Status
+  UINT8   PciBusNumber;         ///< PCI Bus Number
+  UINT8   CardBusBusNumber;     ///< CardBus Bus Number
+  UINT8   SubordinateBusNumber; ///< Subordinate Bus Number
+  UINT8   CardBusLatencyTimer;  ///< CardBus Latency Timer
+  UINT32  MemoryBase0;          ///< Memory Base Register 0
+  UINT32  MemoryLimit0;         ///< Memory Limit Register 0
+  UINT32  MemoryBase1;
+  UINT32  MemoryLimit1;
+  UINT32  IoBase0;
+  UINT32  IoLimit0;             ///< I/O Base Register 0
+  UINT32  IoBase1;              ///< I/O Limit Register 0
+  UINT32  IoLimit1;
+  UINT8   InterruptLine;        ///< Interrupt Line
+  UINT8   InterruptPin;         ///< Interrupt Pin
+  UINT16  BridgeControl;        ///< Bridge Control
+} PCI_CARDBUS_CONTROL_REGISTER;
+
+//
+// Definitions of PCI class bytes and manipulation macros.
+//
+#define PCI_CLASS_OLD                 0x00
+#define   PCI_CLASS_OLD_OTHER           0x00
+#define   PCI_CLASS_OLD_VGA             0x01
+
+#define PCI_CLASS_MASS_STORAGE        0x01
+#define   PCI_CLASS_MASS_STORAGE_SCSI   0x00
+#define   PCI_CLASS_MASS_STORAGE_IDE    0x01
+#define   PCI_CLASS_MASS_STORAGE_FLOPPY 0x02
+#define   PCI_CLASS_MASS_STORAGE_IPI    0x03
+#define   PCI_CLASS_MASS_STORAGE_RAID   0x04
+#define   PCI_CLASS_MASS_STORAGE_OTHER  0x80
+
+#define PCI_CLASS_NETWORK             0x02
+#define   PCI_CLASS_NETWORK_ETHERNET    0x00
+#define   PCI_CLASS_NETWORK_TOKENRING   0x01
+#define   PCI_CLASS_NETWORK_FDDI        0x02
+#define   PCI_CLASS_NETWORK_ATM         0x03
+#define   PCI_CLASS_NETWORK_ISDN        0x04
+#define   PCI_CLASS_NETWORK_OTHER       0x80
+
+#define PCI_CLASS_DISPLAY             0x03
+#define   PCI_CLASS_DISPLAY_VGA         0x00
+#define     PCI_IF_VGA_VGA                0x00
+#define     PCI_IF_VGA_8514               0x01
+#define   PCI_CLASS_DISPLAY_XGA         0x01
+#define   PCI_CLASS_DISPLAY_3D          0x02
+#define   PCI_CLASS_DISPLAY_OTHER       0x80
+
+#define PCI_CLASS_MEDIA               0x04
+#define   PCI_CLASS_MEDIA_VIDEO         0x00
+#define   PCI_CLASS_MEDIA_AUDIO         0x01
+#define   PCI_CLASS_MEDIA_TELEPHONE     0x02
+#define   PCI_CLASS_MEDIA_OTHER         0x80
+
+#define PCI_CLASS_MEMORY_CONTROLLER   0x05
+#define   PCI_CLASS_MEMORY_RAM          0x00
+#define   PCI_CLASS_MEMORY_FLASH        0x01
+#define   PCI_CLASS_MEMORY_OTHER        0x80
+
+#define PCI_CLASS_BRIDGE              0x06
+#define   PCI_CLASS_BRIDGE_HOST         0x00
+#define   PCI_CLASS_BRIDGE_ISA          0x01
+#define   PCI_CLASS_BRIDGE_EISA         0x02
+#define   PCI_CLASS_BRIDGE_MCA          0x03
+#define   PCI_CLASS_BRIDGE_P2P          0x04
+#define     PCI_IF_BRIDGE_P2P             0x00
+#define     PCI_IF_BRIDGE_P2P_SUBTRACTIVE 0x01
+#define   PCI_CLASS_BRIDGE_PCMCIA       0x05
+#define   PCI_CLASS_BRIDGE_NUBUS        0x06
+#define   PCI_CLASS_BRIDGE_CARDBUS      0x07
+#define   PCI_CLASS_BRIDGE_RACEWAY      0x08
+#define   PCI_CLASS_BRIDGE_OTHER        0x80
+#define   PCI_CLASS_BRIDGE_ISA_PDECODE  0x80
+
+#define PCI_CLASS_SCC                 0x07  ///< Simple communications controllers
+#define   PCI_SUBCLASS_SERIAL           0x00
+#define     PCI_IF_GENERIC_XT             0x00
+#define     PCI_IF_16450                  0x01
+#define     PCI_IF_16550                  0x02
+#define     PCI_IF_16650                  0x03
+#define     PCI_IF_16750                  0x04
+#define     PCI_IF_16850                  0x05
+#define     PCI_IF_16950                  0x06
+#define   PCI_SUBCLASS_PARALLEL         0x01
+#define     PCI_IF_PARALLEL_PORT          0x00
+#define     PCI_IF_BI_DIR_PARALLEL_PORT   0x01
+#define     PCI_IF_ECP_PARALLEL_PORT      0x02
+#define     PCI_IF_1284_CONTROLLER        0x03
+#define     PCI_IF_1284_DEVICE            0xFE
+#define   PCI_SUBCLASS_MULTIPORT_SERIAL 0x02
+#define   PCI_SUBCLASS_MODEM            0x03
+#define     PCI_IF_GENERIC_MODEM          0x00
+#define     PCI_IF_16450_MODEM            0x01
+#define     PCI_IF_16550_MODEM            0x02
+#define     PCI_IF_16650_MODEM            0x03
+#define     PCI_IF_16750_MODEM            0x04
+#define   PCI_SUBCLASS_SCC_OTHER        0x80
+
+#define PCI_CLASS_SYSTEM_PERIPHERAL   0x08
+#define   PCI_SUBCLASS_PIC              0x00
+#define     PCI_IF_8259_PIC               0x00
+#define     PCI_IF_ISA_PIC                0x01
+#define     PCI_IF_EISA_PIC               0x02
+#define     PCI_IF_APIC_CONTROLLER        0x10  ///< I/O APIC interrupt controller , 32 byte none-prefetchable memory.
+#define     PCI_IF_APIC_CONTROLLER2       0x20
+#define   PCI_SUBCLASS_DMA              0x01
+#define     PCI_IF_8237_DMA               0x00
+#define     PCI_IF_ISA_DMA                0x01
+#define     PCI_IF_EISA_DMA               0x02
+#define   PCI_SUBCLASS_TIMER            0x02
+#define     PCI_IF_8254_TIMER             0x00
+#define     PCI_IF_ISA_TIMER              0x01
+#define     PCI_IF_EISA_TIMER             0x02
+#define   PCI_SUBCLASS_RTC              0x03
+#define     PCI_IF_GENERIC_RTC            0x00
+#define     PCI_IF_ISA_RTC                0x01
+#define   PCI_SUBCLASS_PNP_CONTROLLER   0x04    ///< HotPlug Controller
+#define   PCI_SUBCLASS_PERIPHERAL_OTHER 0x80
+
+#define PCI_CLASS_INPUT_DEVICE        0x09
+#define   PCI_SUBCLASS_KEYBOARD         0x00
+#define   PCI_SUBCLASS_PEN              0x01
+#define   PCI_SUBCLASS_MOUSE_CONTROLLER 0x02
+#define   PCI_SUBCLASS_SCAN_CONTROLLER  0x03
+#define   PCI_SUBCLASS_GAMEPORT         0x04
+#define     PCI_IF_GAMEPORT               0x00
+#define     PCI_IF_GAMEPORT1              0x10
+#define   PCI_SUBCLASS_INPUT_OTHER      0x80
+
+#define PCI_CLASS_DOCKING_STATION     0x0A
+#define   PCI_SUBCLASS_DOCKING_GENERIC  0x00
+#define   PCI_SUBCLASS_DOCKING_OTHER    0x80
+
+#define PCI_CLASS_PROCESSOR           0x0B
+#define   PCI_SUBCLASS_PROC_386         0x00
+#define   PCI_SUBCLASS_PROC_486         0x01
+#define   PCI_SUBCLASS_PROC_PENTIUM     0x02
+#define   PCI_SUBCLASS_PROC_ALPHA       0x10
+#define   PCI_SUBCLASS_PROC_POWERPC     0x20
+#define   PCI_SUBCLASS_PROC_MIPS        0x30
+#define   PCI_SUBCLASS_PROC_CO_PORC     0x40 ///< Co-Processor
+
+#define PCI_CLASS_SERIAL              0x0C
+#define   PCI_CLASS_SERIAL_FIREWIRE     0x00
+#define     PCI_IF_1394                   0x00
+#define     PCI_IF_1394_OPEN_HCI          0x10
+#define   PCI_CLASS_SERIAL_ACCESS_BUS   0x01
+#define   PCI_CLASS_SERIAL_SSA          0x02
+#define   PCI_CLASS_SERIAL_USB          0x03
+#define     PCI_IF_UHCI                   0x00
+#define     PCI_IF_OHCI                   0x10
+#define     PCI_IF_USB_OTHER              0x80
+#define     PCI_IF_USB_DEVICE             0xFE
+#define   PCI_CLASS_SERIAL_FIBRECHANNEL 0x04
+#define   PCI_CLASS_SERIAL_SMB          0x05
+
+#define PCI_CLASS_WIRELESS            0x0D
+#define   PCI_SUBCLASS_IRDA             0x00
+#define   PCI_SUBCLASS_IR               0x01
+#define   PCI_SUBCLASS_RF               0x10
+#define   PCI_SUBCLASS_WIRELESS_OTHER   0x80
+
+#define PCI_CLASS_INTELLIGENT_IO      0x0E
+
+#define PCI_CLASS_SATELLITE           0x0F
+#define   PCI_SUBCLASS_TV               0x01
+#define   PCI_SUBCLASS_AUDIO            0x02
+#define   PCI_SUBCLASS_VOICE            0x03
+#define   PCI_SUBCLASS_DATA             0x04
+
+#define PCI_SECURITY_CONTROLLER       0x10   ///< Encryption and decryption controller
+#define   PCI_SUBCLASS_NET_COMPUT       0x00
+#define   PCI_SUBCLASS_ENTERTAINMENT    0x10
+#define   PCI_SUBCLASS_SECURITY_OTHER   0x80
+
+#define PCI_CLASS_DPIO                0x11
+#define   PCI_SUBCLASS_DPIO             0x00
+#define   PCI_SUBCLASS_DPIO_OTHER       0x80
+
+/**
+  Macro that checks whether the Base Class code of device matched.
+
+  @param  _p      Specified device.
+  @param  c       Base Class code needs matching.
+
+  @retval TRUE    Base Class code matches the specified device.
+  @retval FALSE   Base Class code doesn't match the specified device.
+
+**/
+#define IS_CLASS1(_p, c)              ((_p)->Hdr.ClassCode[2] == (c))
+/**
+  Macro that checks whether the Base Class code and Sub-Class code of device matched.
+
+  @param  _p      Specified device.
+  @param  c       Base Class code needs matching.
+  @param  s       Sub-Class code needs matching.
+
+  @retval TRUE    Base Class code and Sub-Class code match the specified device.
+  @retval FALSE   Base Class code and Sub-Class code don't match the specified device.
+
+**/
+#define IS_CLASS2(_p, c, s)           (IS_CLASS1 (_p, c) && ((_p)->Hdr.ClassCode[1] == (s)))
+/**
+  Macro that checks whether the Base Class code, Sub-Class code and Interface code of device matched.
+
+  @param  _p      Specified device.
+  @param  c       Base Class code needs matching.
+  @param  s       Sub-Class code needs matching.
+  @param  p       Interface code needs matching.
+
+  @retval TRUE    Base Class code, Sub-Class code and Interface code match the specified device.
+  @retval FALSE   Base Class code, Sub-Class code and Interface code don't match the specified device.
+
+**/
+#define IS_CLASS3(_p, c, s, p)        (IS_CLASS2 (_p, c, s) && ((_p)->Hdr.ClassCode[0] == (p)))
+
+/**
+  Macro that checks whether device is a display controller.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a display controller.
+  @retval FALSE   Device is not a display controller.
+
+**/
+#define IS_PCI_DISPLAY(_p)            IS_CLASS1 (_p, PCI_CLASS_DISPLAY)
+/**
+  Macro that checks whether device is a VGA-compatible controller.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a VGA-compatible controller.
+  @retval FALSE   Device is not a VGA-compatible controller.
+
+**/
+#define IS_PCI_VGA(_p)                IS_CLASS3 (_p, PCI_CLASS_DISPLAY, PCI_CLASS_DISPLAY_VGA, PCI_IF_VGA_VGA)
+/**
+  Macro that checks whether device is an 8514-compatible controller.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is an 8514-compatible controller.
+  @retval FALSE   Device is not an 8514-compatible controller.
+
+**/
+#define IS_PCI_8514(_p)               IS_CLASS3 (_p, PCI_CLASS_DISPLAY, PCI_CLASS_DISPLAY_VGA, PCI_IF_VGA_8514)
+/**
+  Macro that checks whether device is built before the Class Code field was defined.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is an old device.
+  @retval FALSE   Device is not an old device.
+
+**/
+#define IS_PCI_OLD(_p)                IS_CLASS1 (_p, PCI_CLASS_OLD)
+/**
+  Macro that checks whether device is a VGA-compatible device built before the Class Code field was defined.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is an old VGA-compatible device.
+  @retval FALSE   Device is not an old VGA-compatible device.
+
+**/
+#define IS_PCI_OLD_VGA(_p)            IS_CLASS2 (_p, PCI_CLASS_OLD, PCI_CLASS_OLD_VGA)
+/**
+  Macro that checks whether device is an IDE controller.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is an IDE controller.
+  @retval FALSE   Device is not an IDE controller.
+
+**/
+#define IS_PCI_IDE(_p)                IS_CLASS2 (_p, PCI_CLASS_MASS_STORAGE, PCI_CLASS_MASS_STORAGE_IDE)
+/**
+  Macro that checks whether device is a SCSI bus controller.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a SCSI bus controller.
+  @retval FALSE   Device is not a SCSI bus controller.
+
+**/
+#define IS_PCI_SCSI(_p)               IS_CLASS2 (_p, PCI_CLASS_MASS_STORAGE, PCI_CLASS_MASS_STORAGE_SCSI)
+/**
+  Macro that checks whether device is a RAID controller.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a RAID controller.
+  @retval FALSE   Device is not a RAID controller.
+
+**/
+#define IS_PCI_RAID(_p)               IS_CLASS2 (_p, PCI_CLASS_MASS_STORAGE, PCI_CLASS_MASS_STORAGE_RAID)
+/**
+  Macro that checks whether device is an ISA bridge.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is an ISA bridge.
+  @retval FALSE   Device is not an ISA bridge.
+
+**/
+#define IS_PCI_LPC(_p)                IS_CLASS2 (_p, PCI_CLASS_BRIDGE, PCI_CLASS_BRIDGE_ISA)
+/**
+  Macro that checks whether device is a PCI-to-PCI bridge.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a PCI-to-PCI bridge.
+  @retval FALSE   Device is not a PCI-to-PCI bridge.
+
+**/
+#define IS_PCI_P2P(_p)                IS_CLASS3 (_p, PCI_CLASS_BRIDGE, PCI_CLASS_BRIDGE_P2P, PCI_IF_BRIDGE_P2P)
+/**
+  Macro that checks whether device is a Subtractive Decode PCI-to-PCI bridge.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a Subtractive Decode PCI-to-PCI bridge.
+  @retval FALSE   Device is not a Subtractive Decode PCI-to-PCI bridge.
+
+**/
+#define IS_PCI_P2P_SUB(_p)            IS_CLASS3 (_p, PCI_CLASS_BRIDGE, PCI_CLASS_BRIDGE_P2P, PCI_IF_BRIDGE_P2P_SUBTRACTIVE)
+/**
+  Macro that checks whether device is a 16550-compatible serial controller.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a 16550-compatible serial controller.
+  @retval FALSE   Device is not a 16550-compatible serial controller.
+
+**/
+#define IS_PCI_16550_SERIAL(_p)       IS_CLASS3 (_p, PCI_CLASS_SCC, PCI_SUBCLASS_SERIAL, PCI_IF_16550)
+/**
+  Macro that checks whether device is a Universal Serial Bus controller.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a Universal Serial Bus controller.
+  @retval FALSE   Device is not a Universal Serial Bus controller.
+
+**/
+#define IS_PCI_USB(_p)                IS_CLASS2 (_p, PCI_CLASS_SERIAL, PCI_CLASS_SERIAL_USB)
+
+//
+// the definition of Header Type
+//
+#define HEADER_TYPE_DEVICE            0x00
+#define HEADER_TYPE_PCI_TO_PCI_BRIDGE 0x01
+#define HEADER_TYPE_CARDBUS_BRIDGE    0x02
+#define HEADER_TYPE_MULTI_FUNCTION    0x80
+//
+// Mask of Header type
+//
+#define HEADER_LAYOUT_CODE            0x7f
+/**
+  Macro that checks whether device is a PCI-PCI bridge.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a PCI-PCI bridge.
+  @retval FALSE   Device is not a PCI-PCI bridge.
+
+**/
+#define IS_PCI_BRIDGE(_p)             (((_p)->Hdr.HeaderType & HEADER_LAYOUT_CODE) == (HEADER_TYPE_PCI_TO_PCI_BRIDGE))
+/**
+  Macro that checks whether device is a CardBus bridge.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a CardBus bridge.
+  @retval FALSE   Device is not a CardBus bridge.
+
+**/
+#define IS_CARDBUS_BRIDGE(_p)         (((_p)->Hdr.HeaderType & HEADER_LAYOUT_CODE) == (HEADER_TYPE_CARDBUS_BRIDGE))
+/**
+  Macro that checks whether device is a multiple functions device.
+
+  @param  _p      Specified device.
+
+  @retval TRUE    Device is a multiple functions device.
+  @retval FALSE   Device is not a multiple functions device.
+
+**/
+#define IS_PCI_MULTI_FUNC(_p)         ((_p)->Hdr.HeaderType & HEADER_TYPE_MULTI_FUNCTION)
+
+///
+/// Rom Base Address in Bridge, defined in PCI-to-PCI Bridge Architecture Specification,
+///
+#define PCI_BRIDGE_ROMBAR             0x38
+
+#define PCI_MAX_BAR                   0x0006
+#define PCI_MAX_CONFIG_OFFSET         0x0100
+
+#define PCI_VENDOR_ID_OFFSET                        0x00
+#define PCI_DEVICE_ID_OFFSET                        0x02
+#define PCI_COMMAND_OFFSET                          0x04
+#define PCI_PRIMARY_STATUS_OFFSET                   0x06
+#define PCI_REVISION_ID_OFFSET                      0x08
+#define PCI_CLASSCODE_OFFSET                        0x09
+#define PCI_CACHELINE_SIZE_OFFSET                   0x0C
+#define PCI_LATENCY_TIMER_OFFSET                    0x0D
+#define PCI_HEADER_TYPE_OFFSET                      0x0E
+#define PCI_BIST_OFFSET                             0x0F
+#define PCI_BASE_ADDRESSREG_OFFSET                  0x10
+#define PCI_CARDBUS_CIS_OFFSET                      0x28
+#define PCI_SVID_OFFSET                             0x2C ///< SubSystem Vendor id
+#define PCI_SUBSYSTEM_VENDOR_ID_OFFSET              0x2C
+#define PCI_SID_OFFSET                              0x2E ///< SubSystem ID
+#define PCI_SUBSYSTEM_ID_OFFSET                     0x2E
+#define PCI_EXPANSION_ROM_BASE                      0x30
+#define PCI_CAPBILITY_POINTER_OFFSET                0x34
+#define PCI_INT_LINE_OFFSET                         0x3C ///< Interrupt Line Register
+#define PCI_INT_PIN_OFFSET                          0x3D ///< Interrupt Pin Register
+#define PCI_MAXGNT_OFFSET                           0x3E ///< Max Grant Register
+#define PCI_MAXLAT_OFFSET                           0x3F ///< Max Latency Register
+
+//
+// defined in PCI-to-PCI Bridge Architecture Specification
+//
+#define PCI_BRIDGE_PRIMARY_BUS_REGISTER_OFFSET      0x18
+#define PCI_BRIDGE_SECONDARY_BUS_REGISTER_OFFSET    0x19
+#define PCI_BRIDGE_SUBORDINATE_BUS_REGISTER_OFFSET  0x1a
+#define PCI_BRIDGE_SECONDARY_LATENCY_TIMER_OFFSET   0x1b
+#define PCI_BRIDGE_STATUS_REGISTER_OFFSET           0x1E
+#define PCI_BRIDGE_CONTROL_REGISTER_OFFSET          0x3E
+
+///
+/// Interrupt Line "Unknown" or "No connection" value defined for x86 based system
+///
+#define PCI_INT_LINE_UNKNOWN                        0xFF
+
+///
+/// PCI Access Data Format
+///
+typedef union {
+  struct {
+    UINT32  Reg : 8;
+    UINT32  Func : 3;
+    UINT32  Dev : 5;
+    UINT32  Bus : 8;
+    UINT32  Reserved : 7;
+    UINT32  Enable : 1;
+  } Bits;
+  UINT32  Uint32;
+} PCI_CONFIG_ACCESS_CF8;
+
+#pragma pack()
+
+#define EFI_PCI_COMMAND_IO_SPACE                        BIT0   ///< 0x0001
+#define EFI_PCI_COMMAND_MEMORY_SPACE                    BIT1   ///< 0x0002
+#define EFI_PCI_COMMAND_BUS_MASTER                      BIT2   ///< 0x0004
+#define EFI_PCI_COMMAND_SPECIAL_CYCLE                   BIT3   ///< 0x0008
+#define EFI_PCI_COMMAND_MEMORY_WRITE_AND_INVALIDATE     BIT4   ///< 0x0010
+#define EFI_PCI_COMMAND_VGA_PALETTE_SNOOP               BIT5   ///< 0x0020
+#define EFI_PCI_COMMAND_PARITY_ERROR_RESPOND            BIT6   ///< 0x0040
+#define EFI_PCI_COMMAND_STEPPING_CONTROL                BIT7   ///< 0x0080
+#define EFI_PCI_COMMAND_SERR                            BIT8   ///< 0x0100
+#define EFI_PCI_COMMAND_FAST_BACK_TO_BACK               BIT9   ///< 0x0200
+
+//
+// defined in PCI-to-PCI Bridge Architecture Specification
+//
+#define EFI_PCI_BRIDGE_CONTROL_PARITY_ERROR_RESPONSE    BIT0   ///< 0x0001
+#define EFI_PCI_BRIDGE_CONTROL_SERR                     BIT1   ///< 0x0002
+#define EFI_PCI_BRIDGE_CONTROL_ISA                      BIT2   ///< 0x0004
+#define EFI_PCI_BRIDGE_CONTROL_VGA                      BIT3   ///< 0x0008
+#define EFI_PCI_BRIDGE_CONTROL_VGA_16                   BIT4   ///< 0x0010
+#define EFI_PCI_BRIDGE_CONTROL_MASTER_ABORT             BIT5   ///< 0x0020
+#define EFI_PCI_BRIDGE_CONTROL_RESET_SECONDARY_BUS      BIT6   ///< 0x0040
+#define EFI_PCI_BRIDGE_CONTROL_FAST_BACK_TO_BACK        BIT7   ///< 0x0080
+#define EFI_PCI_BRIDGE_CONTROL_PRIMARY_DISCARD_TIMER    BIT8   ///< 0x0100
+#define EFI_PCI_BRIDGE_CONTROL_SECONDARY_DISCARD_TIMER  BIT9   ///< 0x0200
+#define EFI_PCI_BRIDGE_CONTROL_TIMER_STATUS             BIT10  ///< 0x0400
+#define EFI_PCI_BRIDGE_CONTROL_DISCARD_TIMER_SERR       BIT11  ///< 0x0800
+
+//
+// Following are the PCI-CARDBUS bridge control bit, defined in PC Card Standard
+//
+#define EFI_PCI_BRIDGE_CONTROL_IREQINT_ENABLE           BIT7   ///< 0x0080
+#define EFI_PCI_BRIDGE_CONTROL_RANGE0_MEMORY_TYPE       BIT8   ///< 0x0100
+#define EFI_PCI_BRIDGE_CONTROL_RANGE1_MEMORY_TYPE       BIT9   ///< 0x0200
+#define EFI_PCI_BRIDGE_CONTROL_WRITE_POSTING_ENABLE     BIT10  ///< 0x0400
+
+//
+// Following are the PCI status control bit
+//
+#define EFI_PCI_STATUS_CAPABILITY                       BIT4   ///< 0x0010
+#define EFI_PCI_STATUS_66MZ_CAPABLE                     BIT5   ///< 0x0020
+#define EFI_PCI_FAST_BACK_TO_BACK_CAPABLE               BIT7   ///< 0x0080
+#define EFI_PCI_MASTER_DATA_PARITY_ERROR                BIT8   ///< 0x0100
+
+///
+/// defined in PC Card Standard
+///
+#define EFI_PCI_CARDBUS_BRIDGE_CAPABILITY_PTR 0x14
+
+#pragma pack(1)
+//
+// PCI Capability List IDs and records
+//
+#define EFI_PCI_CAPABILITY_ID_PMI     0x01
+#define EFI_PCI_CAPABILITY_ID_AGP     0x02
+#define EFI_PCI_CAPABILITY_ID_VPD     0x03
+#define EFI_PCI_CAPABILITY_ID_SLOTID  0x04
+#define EFI_PCI_CAPABILITY_ID_MSI     0x05
+#define EFI_PCI_CAPABILITY_ID_HOTPLUG 0x06
+#define EFI_PCI_CAPABILITY_ID_SHPC    0x0C
+
+///
+/// Capabilities List Header
+/// Section 6.7, PCI Local Bus Specification, 2.2
+///
+typedef struct {
+  UINT8 CapabilityID;
+  UINT8 NextItemPtr;
+} EFI_PCI_CAPABILITY_HDR;
+
+///
+/// PMC - Power Management Capabilities
+/// Section 3.2.3, PCI Power Management Interface Specification, Revision 1.2
+///
+typedef union {
+  struct {
+    UINT16 Version : 3;
+    UINT16 PmeClock : 1;
+    UINT16 Reserved : 1;
+    UINT16 DeviceSpecificInitialization : 1;
+    UINT16 AuxCurrent : 3;
+    UINT16 D1Support : 1;
+    UINT16 D2Support : 1;
+    UINT16 PmeSupport : 5;
+  } Bits;
+  UINT16 Data;
+} EFI_PCI_PMC;
+
+#define EFI_PCI_PMC_D3_COLD_MASK    (BIT15)
+
+///
+/// PMCSR - Power Management Control/Status
+/// Section 3.2.4, PCI Power Management Interface Specification, Revision 1.2
+///
+typedef union {
+  struct {
+    UINT16 PowerState : 2;
+    UINT16 ReservedForPciExpress : 1;
+    UINT16 NoSoftReset : 1;
+    UINT16 Reserved : 4;
+    UINT16 PmeEnable : 1;
+    UINT16 DataSelect : 4;
+    UINT16 DataScale : 2;
+    UINT16 PmeStatus : 1;
+  } Bits;
+  UINT16 Data;
+} EFI_PCI_PMCSR;
+
+#define PCI_POWER_STATE_D0     0
+#define PCI_POWER_STATE_D1     1
+#define PCI_POWER_STATE_D2     2
+#define PCI_POWER_STATE_D3_HOT 3
+
+///
+/// PMCSR_BSE - PMCSR PCI-to-PCI Bridge Support Extensions
+/// Section 3.2.5, PCI Power Management Interface Specification, Revision 1.2
+///
+typedef union {
+  struct {
+    UINT8 Reserved : 6;
+    UINT8 B2B3 : 1;
+    UINT8 BusPowerClockControl : 1;
+  } Bits;
+  UINT8   Uint8;
+} EFI_PCI_PMCSR_BSE;
+
+///
+/// Power Management Register Block Definition
+/// Section 3.2, PCI Power Management Interface Specification, Revision 1.2
+///
+typedef struct {
+  EFI_PCI_CAPABILITY_HDR  Hdr;
+  EFI_PCI_PMC             PMC;
+  EFI_PCI_PMCSR           PMCSR;
+  EFI_PCI_PMCSR_BSE       BridgeExtention;
+  UINT8                   Data;
+} EFI_PCI_CAPABILITY_PMI;
+
+///
+/// A.G.P Capability
+/// Section 6.1.4, Accelerated Graphics Port Interface Specification, Revision 1.0
+///
+typedef struct {
+  EFI_PCI_CAPABILITY_HDR  Hdr;
+  UINT8                   Rev;
+  UINT8                   Reserved;
+  UINT32                  Status;
+  UINT32                  Command;
+} EFI_PCI_CAPABILITY_AGP;
+
+///
+/// VPD Capability Structure
+/// Appendix I, PCI Local Bus Specification, 2.2
+///
+typedef struct {
+  EFI_PCI_CAPABILITY_HDR  Hdr;
+  UINT16                  AddrReg;
+  UINT32                  DataReg;
+} EFI_PCI_CAPABILITY_VPD;
+
+///
+/// Slot Numbering Capabilities Register
+/// Section 3.2.6, PCI-to-PCI Bridge Architecture Specification, Revision 1.2
+///
+typedef struct {
+  EFI_PCI_CAPABILITY_HDR  Hdr;
+  UINT8                   ExpnsSlotReg;
+  UINT8                   ChassisNo;
+} EFI_PCI_CAPABILITY_SLOTID;
+
+///
+/// Message Capability Structure for 32-bit Message Address
+/// Section 6.8.1, PCI Local Bus Specification, 2.2
+///
+typedef struct {
+  EFI_PCI_CAPABILITY_HDR  Hdr;
+  UINT16                  MsgCtrlReg;
+  UINT32                  MsgAddrReg;
+  UINT16                  MsgDataReg;
+} EFI_PCI_CAPABILITY_MSI32;
+
+///
+/// Message Capability Structure for 64-bit Message Address
+/// Section 6.8.1, PCI Local Bus Specification, 2.2
+///
+typedef struct {
+  EFI_PCI_CAPABILITY_HDR  Hdr;
+  UINT16                  MsgCtrlReg;
+  UINT32                  MsgAddrRegLsdw;
+  UINT32                  MsgAddrRegMsdw;
+  UINT16                  MsgDataReg;
+} EFI_PCI_CAPABILITY_MSI64;
+
+///
+/// Capability EFI_PCI_CAPABILITY_ID_HOTPLUG,
+/// CompactPCI Hot Swap Specification PICMG 2.1, R1.0
+///
+typedef struct {
+  EFI_PCI_CAPABILITY_HDR  Hdr;
+  ///
+  /// not finished - fields need to go here
+  ///
+} EFI_PCI_CAPABILITY_HOTPLUG;
+
+#define PCI_BAR_IDX0        0x00
+#define PCI_BAR_IDX1        0x01
+#define PCI_BAR_IDX2        0x02
+#define PCI_BAR_IDX3        0x03
+#define PCI_BAR_IDX4        0x04
+#define PCI_BAR_IDX5        0x05
+
+///
+/// EFI PCI Option ROM definitions
+///
+#define EFI_ROOT_BRIDGE_LIST                            'eprb'
+#define EFI_PCI_EXPANSION_ROM_HEADER_EFISIGNATURE       0x0EF1  ///< defined in UEFI Spec.
+
+#define PCI_EXPANSION_ROM_HEADER_SIGNATURE              0xaa55
+#define PCI_DATA_STRUCTURE_SIGNATURE                    SIGNATURE_32 ('P', 'C', 'I', 'R')
+#define PCI_CODE_TYPE_PCAT_IMAGE                        0x00
+#define EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED         0x0001  ///< defined in UEFI spec.
+
+///
+/// Standard PCI Expansion ROM Header
+/// Section 13.4.2, Unified Extensible Firmware Interface Specification, Version 2.1
+///
+typedef struct {
+  UINT16  Signature;    ///< 0xaa55
+  UINT8   Reserved[0x16];
+  UINT16  PcirOffset;
+} PCI_EXPANSION_ROM_HEADER;
+
+///
+/// Legacy ROM Header Extensions
+/// Section 6.3.3.1, PCI Local Bus Specification, 2.2
+///
+typedef struct {
+  UINT16  Signature;    ///< 0xaa55
+  UINT8   Size512;
+  UINT8   InitEntryPoint[3];
+  UINT8   Reserved[0x12];
+  UINT16  PcirOffset;
+} EFI_LEGACY_EXPANSION_ROM_HEADER;
+
+///
+/// PCI Data Structure Format
+/// Section 6.3.1.2, PCI Local Bus Specification, 2.2
+///
+typedef struct {
+  UINT32  Signature;    ///< "PCIR"
+  UINT16  VendorId;
+  UINT16  DeviceId;
+  UINT16  Reserved0;
+  UINT16  Length;
+  UINT8   Revision;
+  UINT8   ClassCode[3];
+  UINT16  ImageLength;
+  UINT16  CodeRevision;
+  UINT8   CodeType;
+  UINT8   Indicator;
+  UINT16  Reserved1;
+} PCI_DATA_STRUCTURE;
+
+///
+/// EFI PCI Expansion ROM Header
+/// Section 13.4.2, Unified Extensible Firmware Interface Specification, Version 2.1
+///
+typedef struct {
+  UINT16  Signature;    ///< 0xaa55
+  UINT16  InitializationSize;
+  UINT32  EfiSignature; ///< 0x0EF1
+  UINT16  EfiSubsystem;
+  UINT16  EfiMachineType;
+  UINT16  CompressionType;
+  UINT8   Reserved[8];
+  UINT16  EfiImageHeaderOffset;
+  UINT16  PcirOffset;
+} EFI_PCI_EXPANSION_ROM_HEADER;
+
+typedef union {
+  UINT8                           *Raw;
+  PCI_EXPANSION_ROM_HEADER        *Generic;
+  EFI_PCI_EXPANSION_ROM_HEADER    *Efi;
+  EFI_LEGACY_EXPANSION_ROM_HEADER *PcAt;
+} EFI_PCI_ROM_HEADER;
+
+#pragma pack()
+
+#endif