Add default implementation of EFI_CPU_IO_PPI and EFI_PCI_CFG2_PPI for EFI_SERVICES_TABLE.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9662 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/Pei/CpuIo/CpuIo.c

@@ -0,0 +1,541 @@
+/** @file
+  The default version of EFI_PEI_CPU_IO_PPI support published by PeiServices in
+  PeiCore initialization phase.
+ 
+  EFI_PEI_CPU_IO_PPI is installed by some platform or chipset-specific PEIM that
+  abstracts the processor-visible I/O operations. When PeiCore is started, the
+  default version of EFI_PEI_CPU_IO_PPI will be assigned to PeiServices table.
+  
+Copyright (c) 2009, 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.             
+
+**/
+
+#include "PeiMain.h"
+
+///
+/// This default instance of EFI_PEI_CPU_IO_PPI install assigned to EFI_PEI_SERVICE.CpuIo
+/// when PeiCore's initialization.
+///
+EFI_PEI_CPU_IO_PPI gPeiDefaultCpuIoPpi = {
+  {
+    PeiDefaultMemRead,
+    PeiDefaultMemWrite
+  },
+  {
+    PeiDefaultIoRead,
+    PeiDefaultIoWrite
+  },
+  PeiDefaultIoRead8,
+  PeiDefaultIoRead16,
+  PeiDefaultIoRead32,
+  PeiDefaultIoRead64,
+  PeiDefaultIoWrite8,
+  PeiDefaultIoWrite16,
+  PeiDefaultIoWrite32,
+  PeiDefaultIoWrite64,
+  PeiDefaultMemRead8,
+  PeiDefaultMemRead16,
+  PeiDefaultMemRead32,
+  PeiDefaultMemRead64,
+  PeiDefaultMemWrite8,
+  PeiDefaultMemWrite16,
+  PeiDefaultMemWrite32,
+  PeiDefaultMemWrite64
+};
+
+/**
+  Memory-based read services.
+  
+  This function is to perform the Memory Access Read service based on installed 
+  instance of the EFI_PEI_CPU_IO_PPI. 
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+   
+  @param  PeiServices           An indirect pointer to the PEI Services Table
+                                published by the PEI Foundation.
+  @param  This                  Pointer to local data for the interface.
+  @param  Width                 The width of the access. Enumerated in bytes.
+  @param  Address               The physical address of the access.
+  @param  Count                 The number of accesses to perform.
+  @param  Buffer                A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_NOT_YET_AVAILABLE The service has not been installed.     
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultMemRead (
+  IN  CONST EFI_PEI_SERVICES            **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI          *This,
+  IN  EFI_PEI_CPU_IO_PPI_WIDTH          Width,
+  IN  UINT64                            Address,
+  IN  UINTN                             Count,
+  IN  OUT VOID                          *Buffer
+  )
+{
+  return EFI_NOT_AVAILABLE_YET;
+}
+  
+/**
+  Memory-based write services.
+   
+  This function is to perform the Memory Access Write service based on installed 
+  instance of the EFI_PEI_CPU_IO_PPI. 
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+   
+  @param  PeiServices           An indirect pointer to the PEI Services Table
+                                published by the PEI Foundation.
+  @param  This                  Pointer to local data for the interface.
+  @param  Width                 The width of the access. Enumerated in bytes.
+  @param  Address               The physical address of the access.
+  @param  Count                 The number of accesses to perform.
+  @param  Buffer                A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_NOT_YET_AVAILABLE The service has not been installed.     
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultMemWrite (
+  IN  CONST EFI_PEI_SERVICES            **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI          *This,
+  IN  EFI_PEI_CPU_IO_PPI_WIDTH          Width,
+  IN  UINT64                            Address,
+  IN  UINTN                             Count,
+  IN  OUT VOID                          *Buffer
+  )
+{
+  return EFI_NOT_AVAILABLE_YET;
+}
+
+/**
+  IO-based read services.
+  
+  This function is to perform the IO-base read service for the EFI_PEI_CPU_IO_PPI.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+  
+  @param  PeiServices           An indirect pointer to the PEI Services Table
+                                published by the PEI Foundation.
+  @param  This                  Pointer to local data for the interface.
+  @param  Width                 The width of the access. Enumerated in bytes.
+  @param  Address               The physical address of the access.
+  @param  Count                 The number of accesses to perform.
+  @param  Buffer                A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_NOT_YET_AVAILABLE The service has not been installed.
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultIoRead (
+  IN      CONST EFI_PEI_SERVICES          **PeiServices,
+  IN      CONST EFI_PEI_CPU_IO_PPI        *This,
+  IN      EFI_PEI_CPU_IO_PPI_WIDTH        Width,
+  IN      UINT64                          Address,
+  IN      UINTN                           Count,
+  IN OUT  VOID                            *Buffer
+  )
+{
+  return EFI_NOT_AVAILABLE_YET;
+}
+
+/**
+  IO-based write services.
+  
+  This function is to perform the IO-base write service for the EFI_PEI_CPU_IO_PPI.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+  
+  @param  PeiServices           An indirect pointer to the PEI Services Table
+                                published by the PEI Foundation.
+  @param  This                  Pointer to local data for the interface.
+  @param  Width                 The width of the access. Enumerated in bytes.
+  @param  Address               The physical address of the access.
+  @param  Count                 The number of accesses to perform.
+  @param  Buffer                A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_NOT_YET_AVAILABLE The service has not been installed.
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultIoWrite (
+  IN      CONST EFI_PEI_SERVICES          **PeiServices,
+  IN      CONST EFI_PEI_CPU_IO_PPI        *This,
+  IN      EFI_PEI_CPU_IO_PPI_WIDTH        Width,
+  IN      UINT64                          Address,
+  IN      UINTN                           Count,
+  IN OUT  VOID                            *Buffer
+  )
+{
+  return EFI_NOT_AVAILABLE_YET;
+}
+
+/**
+  8-bit I/O read operations.
+  
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return An 8-bit value returned from the I/O space.
+**/
+UINT8
+EFIAPI
+PeiDefaultIoRead8 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  )
+{
+  return 0;
+}
+
+/**
+  Reads an 16-bit I/O port.
+  
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return A 16-bit value returned from the I/O space.
+**/
+UINT16
+EFIAPI
+PeiDefaultIoRead16 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  )
+{
+  return 0;
+}
+
+/**
+  Reads an 32-bit I/O port.
+  
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return A 32-bit value returned from the I/O space.
+**/
+UINT32
+EFIAPI
+PeiDefaultIoRead32 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  )
+{
+  return 0;
+}
+
+/**
+  Reads an 64-bit I/O port.
+  
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return A 64-bit value returned from the I/O space.
+**/
+UINT64
+EFIAPI
+PeiDefaultIoRead64 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  )
+{
+  return 0;
+}
+
+/**
+  8-bit I/O write operations.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then do
+  nothing.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+**/
+VOID
+EFIAPI
+PeiDefaultIoWrite8 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address,
+  IN  UINT8                       Data
+  )
+{
+}  
+
+/**
+  16-bit I/O write operations.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then do
+  nothing.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+**/
+VOID
+EFIAPI
+PeiDefaultIoWrite16 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address,
+  IN  UINT16                      Data
+  )
+{
+}
+
+/**
+  32-bit I/O write operations.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then do
+  nothing.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+**/
+VOID
+EFIAPI
+PeiDefaultIoWrite32 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address,
+  IN  UINT32                      Data
+  )
+{
+}
+
+/**
+  64-bit I/O write operations.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then do
+  nothing.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+**/
+VOID
+EFIAPI
+PeiDefaultIoWrite64 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address,
+  IN  UINT64                      Data
+  )
+{
+}
+
+/**
+  8-bit memory read operations.
+
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return An 8-bit value returned from the memory space.
+
+**/
+UINT8
+EFIAPI
+PeiDefaultMemRead8 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  )
+{
+  return 0;
+}  
+
+/**
+  16-bit memory read operations.
+
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return An 16-bit value returned from the memory space.
+
+**/
+UINT16
+EFIAPI
+PeiDefaultMemRead16 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  )
+{
+  return 0;
+}  
+
+/**
+  32-bit memory read operations.
+
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return An 32-bit value returned from the memory space.
+
+**/
+UINT32
+EFIAPI
+PeiDefaultMemRead32 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  )
+{
+  return 0;
+} 
+
+/**
+  64-bit memory read operations.
+
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return An 64-bit value returned from the memory space.
+
+**/
+UINT64
+EFIAPI
+PeiDefaultMemRead64 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  )
+{
+  return 0;
+} 
+
+/**
+  8-bit memory write operations.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then do
+  nothing.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+
+**/
+VOID
+EFIAPI
+PeiDefaultMemWrite8 (
+  IN  CONST EFI_PEI_SERVICES        **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI      *This,
+  IN  UINT64                        Address,
+  IN  UINT8                         Data
+  )
+{
+}  
+
+/**
+  16-bit memory write operations.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then do
+  nothing.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+
+**/
+VOID
+EFIAPI
+PeiDefaultMemWrite16 (
+  IN  CONST EFI_PEI_SERVICES        **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI      *This,
+  IN  UINT64                        Address,
+  IN  UINT16                        Data
+  )
+{
+}  
+
+/**
+  32-bit memory write operations.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then do
+  nothing.
+
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+
+**/
+VOID
+EFIAPI
+PeiDefaultMemWrite32 (
+  IN  CONST EFI_PEI_SERVICES        **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI      *This,
+  IN  UINT64                        Address,
+  IN  UINT32                        Data
+  )
+{
+} 
+
+/**
+  64-bit memory write operations.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then do
+  nothing.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+
+**/
+VOID
+EFIAPI
+PeiDefaultMemWrite64 (
+  IN  CONST EFI_PEI_SERVICES        **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI      *This,
+  IN  UINT64                        Address,
+  IN  UINT64                        Data
+  )
+{
+} 

MdeModulePkg/Core/Pei/PciCfg2/PciCfg2.c

@@ -0,0 +1,128 @@
+/** @file
+  The default version of EFI_PEI_PCI_CFG2_PPI support published by PeiServices in
+  PeiCore initialization phase.
+ 
+  EFI_PEI_PCI_CFG2_PPI is installed by the PEIM which supports a PCI root bridge. 
+  When PeiCore is started, the default version of EFI_PEI_PCI_CFG2_PPI will be assigned 
+  to PeiServices table.
+  
+Copyright (c) 2009, 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.             
+
+**/
+
+#include "PeiMain.h"
+
+///
+/// This default instance of EFI_PEI_PCI_CFG2_PPI install assigned to EFI_PEI_SERVICE.PciCfg 
+/// when PeiCore's initialization.
+///
+EFI_PEI_PCI_CFG2_PPI gPeiDefaultPciCfg2Ppi = {
+  PeiDefaultPciCfg2Read,
+  PeiDefaultPciCfg2Write,
+  PeiDefaultPciCfg2Modify
+};
+
+/**
+  Reads from a given location in the PCI configuration space.
+
+  If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+  
+  @param  PeiServices     An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This            Pointer to local data for the interface.
+  @param  Width           The width of the access. Enumerated in bytes.
+                          See EFI_PEI_PCI_CFG_PPI_WIDTH above.
+  @param  Address         The physical address of the access. The format of
+                          the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
+  @param  Buffer          A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_INVALID_PARAMETER The invalid access width.
+  @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
+  
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultPciCfg2Read (
+  IN CONST  EFI_PEI_SERVICES          **PeiServices,
+  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
+  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+  IN        UINT64                    Address,
+  IN OUT    VOID                      *Buffer
+  )
+{
+  return EFI_NOT_AVAILABLE_YET;
+}
+
+/**
+  Write to a given location in the PCI configuration space.
+
+  If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+  
+  @param  PeiServices     An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This            Pointer to local data for the interface.
+  @param  Width           The width of the access. Enumerated in bytes.
+                          See EFI_PEI_PCI_CFG_PPI_WIDTH above.
+  @param  Address         The physical address of the access. The format of
+                          the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
+  @param  Buffer          A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_INVALID_PARAMETER The invalid access width.
+  @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultPciCfg2Write (
+  IN CONST  EFI_PEI_SERVICES          **PeiServices,
+  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
+  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+  IN        UINT64                    Address,
+  IN OUT    VOID                      *Buffer
+  )
+{
+  return EFI_NOT_AVAILABLE_YET;
+}  
+
+/**
+  This function performs a read-modify-write operation on the contents from a given
+  location in the PCI configuration space.
+  If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+
+  @param  PeiServices     An indirect pointer to the PEI Services Table
+                          published by the PEI Foundation.
+  @param  This            Pointer to local data for the interface.
+  @param  Width           The width of the access. Enumerated in bytes. Type
+                          EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().
+  @param  Address         The physical address of the access.
+  @param  SetBits         Points to value to bitwise-OR with the read configuration value.
+                          The size of the value is determined by Width.
+  @param  ClearBits       Points to the value to negate and bitwise-AND with the read configuration value.
+                          The size of the value is determined by Width.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_INVALID_PARAMETER The invalid access width.
+  @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultPciCfg2Modify (
+  IN CONST  EFI_PEI_SERVICES          **PeiServices,
+  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
+  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+  IN        UINT64                    Address,
+  IN        VOID                      *SetBits,
+  IN        VOID                      *ClearBits
+  )
+{
+  return EFI_NOT_AVAILABLE_YET;
+}   

MdeModulePkg/Core/Pei/PeiMain.h

@@ -1075,6 +1075,527 @@ FindNextCoreFvHandle (
   IN UINTN              Instance
   );
     
+//
+// Default EFI_PEI_CPU_IO_PPI support for EFI_PEI_SERVICES table when PeiCore initialization.
+//    
+
+/**
+  Memory-based read services.
+  
+  This function is to perform the Memory Access Read service based on installed 
+  instance of the EFI_PEI_CPU_IO_PPI. 
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+   
+  @param  PeiServices           An indirect pointer to the PEI Services Table
+                                published by the PEI Foundation.
+  @param  This                  Pointer to local data for the interface.
+  @param  Width                 The width of the access. Enumerated in bytes.
+  @param  Address               The physical address of the access.
+  @param  Count                 The number of accesses to perform.
+  @param  Buffer                A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_NOT_YET_AVAILABLE The service has not been installed.     
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultMemRead (
+  IN  CONST EFI_PEI_SERVICES            **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI          *This,
+  IN  EFI_PEI_CPU_IO_PPI_WIDTH          Width,
+  IN  UINT64                            Address,
+  IN  UINTN                             Count,
+  IN  OUT VOID                          *Buffer
+  );
+  
+/**
+  Memory-based write services.
+   
+  This function is to perform the Memory Access Write service based on installed 
+  instance of the EFI_PEI_CPU_IO_PPI. 
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+   
+  @param  PeiServices           An indirect pointer to the PEI Services Table
+                                published by the PEI Foundation.
+  @param  This                  Pointer to local data for the interface.
+  @param  Width                 The width of the access. Enumerated in bytes.
+  @param  Address               The physical address of the access.
+  @param  Count                 The number of accesses to perform.
+  @param  Buffer                A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_NOT_YET_AVAILABLE The service has not been installed.     
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultMemWrite (
+  IN  CONST EFI_PEI_SERVICES            **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI          *This,
+  IN  EFI_PEI_CPU_IO_PPI_WIDTH          Width,
+  IN  UINT64                            Address,
+  IN  UINTN                             Count,
+  IN  OUT VOID                          *Buffer
+  );
+  
+/**
+  IO-based read services.
+  
+  This function is to perform the IO-base read service for the EFI_PEI_CPU_IO_PPI.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+  
+  @param  PeiServices           An indirect pointer to the PEI Services Table
+                                published by the PEI Foundation.
+  @param  This                  Pointer to local data for the interface.
+  @param  Width                 The width of the access. Enumerated in bytes.
+  @param  Address               The physical address of the access.
+  @param  Count                 The number of accesses to perform.
+  @param  Buffer                A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_NOT_YET_AVAILABLE The service has not been installed.
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultIoRead (
+  IN      CONST EFI_PEI_SERVICES          **PeiServices,
+  IN      CONST EFI_PEI_CPU_IO_PPI        *This,
+  IN      EFI_PEI_CPU_IO_PPI_WIDTH        Width,
+  IN      UINT64                          Address,
+  IN      UINTN                           Count,
+  IN OUT  VOID                            *Buffer
+  );
+  
+/**
+  IO-based write services.
+  
+  This function is to perform the IO-base write service for the EFI_PEI_CPU_IO_PPI.
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+  
+  @param  PeiServices           An indirect pointer to the PEI Services Table
+                                published by the PEI Foundation.
+  @param  This                  Pointer to local data for the interface.
+  @param  Width                 The width of the access. Enumerated in bytes.
+  @param  Address               The physical address of the access.
+  @param  Count                 The number of accesses to perform.
+  @param  Buffer                A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_NOT_YET_AVAILABLE The service has not been installed.
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultIoWrite (
+  IN      CONST EFI_PEI_SERVICES          **PeiServices,
+  IN      CONST EFI_PEI_CPU_IO_PPI        *This,
+  IN      EFI_PEI_CPU_IO_PPI_WIDTH        Width,
+  IN      UINT64                          Address,
+  IN      UINTN                           Count,
+  IN OUT  VOID                            *Buffer
+  );
+  
+/**
+  8-bit I/O read operations.
+  
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return An 8-bit value returned from the I/O space.
+**/
+UINT8
+EFIAPI
+PeiDefaultIoRead8 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  );
+  
+/**
+  Reads an 16-bit I/O port.
+  
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return A 16-bit value returned from the I/O space.
+**/
+UINT16
+EFIAPI
+PeiDefaultIoRead16 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  );
+  
+/**
+  Reads an 32-bit I/O port.
+  
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return A 32-bit value returned from the I/O space.
+**/
+UINT32
+EFIAPI
+PeiDefaultIoRead32 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  );
+  
+/**
+  Reads an 64-bit I/O port.
+  
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return A 64-bit value returned from the I/O space.
+**/
+UINT64
+EFIAPI
+PeiDefaultIoRead64 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  );
+  
+/**
+  8-bit I/O write operations.
+
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+**/
+VOID
+EFIAPI
+PeiDefaultIoWrite8 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address,
+  IN  UINT8                       Data
+  );
+  
+/**
+  16-bit I/O write operations.
+
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+**/
+VOID
+EFIAPI
+PeiDefaultIoWrite16 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address,
+  IN  UINT16                      Data
+  );
+  
+/**
+  32-bit I/O write operations.
+
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+**/
+VOID
+EFIAPI
+PeiDefaultIoWrite32 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address,
+  IN  UINT32                      Data
+  );
+  
+/**
+  64-bit I/O write operations.
+
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+**/
+VOID
+EFIAPI
+PeiDefaultIoWrite64 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address,
+  IN  UINT64                      Data
+  );
+  
+/**
+  8-bit memory read operations.
+
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return An 8-bit value returned from the memory space.
+
+**/
+UINT8
+EFIAPI
+PeiDefaultMemRead8 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  );
+  
+/**
+  16-bit memory read operations.
+
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return An 16-bit value returned from the memory space.
+
+**/
+UINT16
+EFIAPI
+PeiDefaultMemRead16 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  );
+  
+/**
+  32-bit memory read operations.
+
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return An 32-bit value returned from the memory space.
+
+**/
+UINT32
+EFIAPI
+PeiDefaultMemRead32 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  );
+  
+/**
+  64-bit memory read operations.
+
+  If the EFI_PEI_CPU_IO_PPI is not installed by platform/chipset PEIM, then 
+  return 0.
+  
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+
+  @return An 64-bit value returned from the memory space.
+
+**/
+UINT64
+EFIAPI
+PeiDefaultMemRead64 (
+  IN  CONST EFI_PEI_SERVICES      **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI    *This,
+  IN  UINT64                      Address
+  );
+  
+/**
+  8-bit memory write operations.
+
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+
+**/
+VOID
+EFIAPI
+PeiDefaultMemWrite8 (
+  IN  CONST EFI_PEI_SERVICES        **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI      *This,
+  IN  UINT64                        Address,
+  IN  UINT8                         Data
+  );
+  
+/**
+  16-bit memory write operations.
+
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+
+**/
+VOID
+EFIAPI
+PeiDefaultMemWrite16 (
+  IN  CONST EFI_PEI_SERVICES        **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI      *This,
+  IN  UINT64                        Address,
+  IN  UINT16                        Data
+  );
+
+/**
+  32-bit memory write operations.
+
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+
+**/
+VOID
+EFIAPI
+PeiDefaultMemWrite32 (
+  IN  CONST EFI_PEI_SERVICES        **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI      *This,
+  IN  UINT64                        Address,
+  IN  UINT32                        Data
+  );
+  
+/**
+  64-bit memory write operations.
+
+  @param  PeiServices    An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This           Pointer to local data for the interface.
+  @param  Address        The physical address of the access.
+  @param  Data           The data to write.
+
+**/
+VOID
+EFIAPI
+PeiDefaultMemWrite64 (
+  IN  CONST EFI_PEI_SERVICES        **PeiServices,
+  IN  CONST EFI_PEI_CPU_IO_PPI      *This,
+  IN  UINT64                        Address,
+  IN  UINT64                        Data
+  );
+  
+extern EFI_PEI_CPU_IO_PPI gPeiDefaultCpuIoPpi;                                        
+
+//
+// Default EFI_PEI_PCI_CFG2_PPI support for EFI_PEI_SERVICES table when PeiCore initialization.
+// 
+
+/**
+  Reads from a given location in the PCI configuration space.
+
+  If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+  
+  @param  PeiServices     An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This            Pointer to local data for the interface.
+  @param  Width           The width of the access. Enumerated in bytes.
+                          See EFI_PEI_PCI_CFG_PPI_WIDTH above.
+  @param  Address         The physical address of the access. The format of
+                          the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
+  @param  Buffer          A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_INVALID_PARAMETER The invalid access width.
+  @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
+  
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultPciCfg2Read (
+  IN CONST  EFI_PEI_SERVICES          **PeiServices,
+  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
+  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+  IN        UINT64                    Address,
+  IN OUT    VOID                      *Buffer
+  );
+  
+/**
+  Write to a given location in the PCI configuration space.
+
+  If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM, then 
+  return EFI_NOT_YET_AVAILABLE. 
+  
+  @param  PeiServices     An indirect pointer to the PEI Services Table published by the PEI Foundation.
+  @param  This            Pointer to local data for the interface.
+  @param  Width           The width of the access. Enumerated in bytes.
+                          See EFI_PEI_PCI_CFG_PPI_WIDTH above.
+  @param  Address         The physical address of the access. The format of
+                          the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.
+  @param  Buffer          A pointer to the buffer of data.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_INVALID_PARAMETER The invalid access width.
+  @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultPciCfg2Write (
+  IN CONST  EFI_PEI_SERVICES          **PeiServices,
+  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
+  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+  IN        UINT64                    Address,
+  IN OUT    VOID                      *Buffer
+  );
+  
+/**
+  This function performs a read-modify-write operation on the contents from a given
+  location in the PCI configuration space.
+
+  @param  PeiServices     An indirect pointer to the PEI Services Table
+                          published by the PEI Foundation.
+  @param  This            Pointer to local data for the interface.
+  @param  Width           The width of the access. Enumerated in bytes. Type
+                          EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().
+  @param  Address         The physical address of the access.
+  @param  SetBits         Points to value to bitwise-OR with the read configuration value.
+                          The size of the value is determined by Width.
+  @param  ClearBits       Points to the value to negate and bitwise-AND with the read configuration value.
+                          The size of the value is determined by Width.
+
+  @retval EFI_SUCCESS           The function completed successfully.
+  @retval EFI_INVALID_PARAMETER The invalid access width.
+  @retval EFI_NOT_YET_AVAILABLE If the EFI_PEI_PCI_CFG2_PPI is not installed by platform/chipset PEIM.
+**/
+EFI_STATUS
+EFIAPI
+PeiDefaultPciCfg2Modify (
+  IN CONST  EFI_PEI_SERVICES          **PeiServices,
+  IN CONST  EFI_PEI_PCI_CFG2_PPI      *This,
+  IN        EFI_PEI_PCI_CFG_PPI_WIDTH Width,
+  IN        UINT64                    Address,
+  IN        VOID                      *SetBits,
+  IN        VOID                      *ClearBits
+  );    
+  
+extern EFI_PEI_PCI_CFG2_PPI gPeiDefaultPciCfg2Ppi;
+
 /**
   After PeiCore image is shadowed into permanent memory, all build-in FvPpi should
   be re-installed with the instance in permanent memory and all cached FvPpi pointers in 

MdeModulePkg/Core/Pei/PeiMain.inf

@@ -47,6 +47,8 @@
   Dependency/Dependency.c
   Dependency/Dependency.h
   BootMode/BootMode.c
+  CpuIo/CpuIo.c
+  PciCfg2/PciCfg2.c
   PeiMain.h
 
 [Packages]
@@ -84,16 +86,18 @@
   gEfiPeiLoadFilePpiGuid                        ## PRODUCES ## SOMETIMES_CONSUMES (The default load PeImage logic will be used when this PPI doesn't exist)
   gEfiPeiSecurity2PpiGuid                       ## NOTIFY
   gEfiTemporaryRamSupportPpiGuid                ## CONSUMES
-
+  gEfiPeiCpuIoPpiInstalledGuid                  ## PRODUCES                                             ## PRODUCES
+  gEfiPciCfg2PpiGuid                            ## PRODUCES                                                                       ## PRODUCES
+  
 [FixedPcd.common]
   gEfiMdeModulePkgTokenSpaceGuid.PcdPeiCoreMaxFvSupported       ## CONSUMES
   gEfiMdeModulePkgTokenSpaceGuid.PcdPeiCoreMaxPeimPerFv         ## CONSUMES
   gEfiMdeModulePkgTokenSpaceGuid.PcdPeiCoreMaxPpiSupported      ## CONSUMES
-  gEfiMdePkgTokenSpaceGuid.PcdStatusCodeValuePeimDispatch	      ## CONSUMES
+  gEfiMdePkgTokenSpaceGuid.PcdStatusCodeValuePeimDispatch       ## CONSUMES
   gEfiMdePkgTokenSpaceGuid.PcdStatusCodeValuePeiCoreEntry       ## CONSUMES
   gEfiMdeModulePkgTokenSpaceGuid.PcdPeiCoreMaxPeiStackSize      ## CONSUMES
 
 [FeaturePcd.common]
   gEfiMdeModulePkgTokenSpaceGuid.PcdPeiCoreImageLoaderSearchTeSectionFirst   ## CONSUMES
-  gEfiMdeModulePkgTokenSpaceGuid.PcdFrameworkCompatibilitySupport	         ## CONSUMES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFrameworkCompatibilitySupport            ## CONSUMES
   

MdeModulePkg/Core/Pei/PeiMain/PeiMain.c

@@ -55,8 +55,8 @@ EFI_PEI_SERVICES  gPs = {
   PeiReportStatusCode,
   PeiResetSystem,
 
-  NULL,
+  &gPeiDefaultCpuIoPpi,
-  NULL,
+  &gPeiDefaultPciCfg2Ppi,
 
   PeiFfsFindFileByName,
   PeiFfsGetFileInfo,