peicore.h

EFI BIOS是Intel提出的下一代的BIOS标准。这里上传的Edk源代码是EFI BIOS源代码中的与平台无关部分的代码

/*++

Copyright (c) 2004 - 2005, 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:

  PeiCore.h

Abstract:

  Definition of Pei Core Structures and Services

Revision History

--*/

#ifndef _PEICORE_H_
#define _PEICORE_H_

#include "EfiImage.h"
#include "Pei.h"
#include "PeiHob.h"

#ifdef EFI64
#include "SalApi.h"
#endif

#include "EfiCommonLib.h"

#include EFI_PPI_DEFINITION (FindFv)
#include EFI_PPI_DEFINITION (DxeIpl)
#include EFI_PPI_DEFINITION (StatusCode)
#include EFI_PPI_DEFINITION (Security)


#ifdef  EFI_NT_EMULATOR
#include EFI_PPI_DEFINITION (NtPeiLoadFile)
#endif

//
//Build private HOB to PEI core to transfer old NEM-range data to new NEM-range
//
#define EFI_PEI_CORE_PRIVATE_GUID  \
  {0xd641a0f5, 0xcb7c, 0x4846, 0xa3, 0x80, 0x1d, 0x01, 0xb4, 0xd9, 0xe3, 0xb9}

//
// Pei Core private data structures
//
typedef union _PEI_PPI_LIST_POINTERS {
  EFI_PEI_PPI_DESCRIPTOR    *Ppi;
  EFI_PEI_NOTIFY_DESCRIPTOR *Notify;
  VOID                  *Raw;
} PEI_PPI_LIST_POINTERS;

#define PEI_STACK_SIZE 0x20000

#define MAX_PPI_DESCRIPTORS 64

typedef struct {
  INTN                    PpiListEnd;
  INTN                    NotifyListEnd;
  INTN                    DispatchListEnd;
  INTN                    LastDispatchedInstall;
  INTN                    LastDispatchedNotify;
  PEI_PPI_LIST_POINTERS   PpiListPtrs[MAX_PPI_DESCRIPTORS];
} PEI_PPI_DATABASE;

typedef struct {
  UINT8                       CurrentPeim;
  UINT8                       CurrentFv;
  UINT32                      DispatchedPeimBitMap;
  UINT32                      PreviousPeimBitMap;
  EFI_FFS_FILE_HEADER         *CurrentPeimAddress;
  EFI_FIRMWARE_VOLUME_HEADER  *CurrentFvAddress;
  EFI_FIRMWARE_VOLUME_HEADER  *BootFvAddress;
  EFI_FIND_FV_PPI             *FindFv;
} PEI_CORE_DISPATCH_DATA;


//
// Pei Core private data structure instance
//

#define PEI_CORE_HANDLE_SIGNATURE  EFI_SIGNATURE_32('P','e','i','C')

typedef struct{
  UINTN                              Signature;
  EFI_PEI_SERVICES                   *PS;     // Point to ServiceTableShadow
  PEI_PPI_DATABASE                   PpiData;
  PEI_CORE_DISPATCH_DATA             DispatchData;
  EFI_PEI_HOB_POINTERS               HobList;
  BOOLEAN                            SwitchStackSignal;
  BOOLEAN                            PeiMemoryInstalled;
  EFI_PHYSICAL_ADDRESS               StackBase;
  UINT64                             StackSize;
  VOID                               *BottomOfCarHeap;
  VOID                               *TopOfCarHeap;
  VOID                               *CpuIo;
  PEI_SECURITY_PPI                   *PrivateSecurityPpi;
  EFI_PEI_SERVICES                   ServiceTableShadow;

  PEI_DEBUG_CODE (
    UINTN                              SizeOfCacheAsRam;
    VOID                               *MaxTopOfCarHeap;
  )
} PEI_CORE_INSTANCE;

//
// Pei Core Instance Data Macros
//

#define PEI_CORE_INSTANCE_FROM_PS_THIS(a) \
  PEI_CR(a, PEI_CORE_INSTANCE, PS, PEI_CORE_HANDLE_SIGNATURE)

typedef
EFI_STATUS
(EFIAPI *PEI_MAIN_ENTRY_POINT) (
    IN EFI_PEI_STARTUP_DESCRIPTOR  *PeiStartupDescriptor
  );

typedef
EFI_STATUS
(EFIAPI *PEI_CORE_ENTRY_POINT) (
   IN EFI_PEI_STARTUP_DESCRIPTOR  *PeiStartupDescriptor,
   IN PEI_CORE_INSTANCE           *OldCoreData
   );

//
// Union of temporarily used function pointers (to save stack space)
//
typedef union {
  PEI_CORE_ENTRY_POINT         PeiCore;
  EFI_PEIM_ENTRY_POINT         PeimEntry;
  EFI_PEIM_NOTIFY_ENTRY_POINT  PeimNotifyEntry;
  EFI_DXE_IPL_PPI              *DxeIpl;
  EFI_PEI_PPI_DESCRIPTOR       *PpiDescriptor;
  EFI_PEI_NOTIFY_DESCRIPTOR    *NotifyDescriptor;
  VOID                         *Raw;
} PEI_CORE_TEMP_POINTERS;


//
// Main PEI entry
//
EFI_STATUS
EFIAPI
PeiMain (
  IN EFI_PEI_STARTUP_DESCRIPTOR  *PeiStartupDescriptor
  )
/*++

Routine Description:

  Main entry point to Pei Core.

Arguments:

  PeiStartupDescriptor - Information and services provided by SEC phase.

Returns:

  This function never returns

--*/
;


EFI_STATUS
EFIAPI
PeiCore (
  IN EFI_PEI_STARTUP_DESCRIPTOR  *PeiStartupDescriptor,
  IN PEI_CORE_INSTANCE           *OldCoreData
  )
/*++

Routine Description:

  The entry routine to Pei Core, invoked by PeiMain during transition
  from SEC to PEI. After switching stack in the PEI core, it will restart
  with the old core data.

Arguments:

  PeiStartupDescriptor - Information and services provided by SEC phase.
  OldCoreData          - Pointer to old core data that is used to initialize the
                         core's data areas.

Returns:

  This function never returns

--*/
;


//
// Dispatcher support functions
//

EFI_STATUS
PeimDispatchReadiness (
  IN EFI_PEI_SERVICES   **PeiServices,
  IN VOID               *DependencyExpression,
  IN OUT BOOLEAN        *Runnable
  )
/*++

Routine Description:

  This is the POSTFIX version of the dependency evaluator.  When a
  PUSH [PPI GUID] is encountered, a pointer to the GUID is stored on
  the evaluation stack.  When that entry is poped from the evaluation
  stack, the PPI is checked if it is installed.  This method allows
  some time savings as not all PPIs must be checked for certain
  operation types (AND, OR).

Arguments:

  PeiServices               - Calling context.

  DependencyExpression      - Pointer to a dependency expression.  The Grammar adheres to 
                              the BNF described above and is stored in postfix notation.
  Runnable                  - is True if the driver can be scheduled and False if the driver 
                              cannot be scheduled.  This is the value that the schedulers 
                              should use for deciding the state of the driver.

Returns:

  Status = EFI_SUCCESS            if it is a well-formed Grammar
           EFI_INVALID_PARAMETER  if the dependency expression overflows
                                  the evaluation stack
           EFI_INVALID_PARAMETER  if the dependency expression underflows
                                  the evaluation stack
           EFI_INVALID_PARAMETER  if the dependency expression is not a
                                  well-formed Grammar.
--*/
;


EFI_STATUS
PeiDispatcher (
  IN EFI_PEI_STARTUP_DESCRIPTOR  *PeiStartupDescriptor,
  IN PEI_CORE_INSTANCE           *PrivateData,
  IN PEI_CORE_DISPATCH_DATA      *DispatchData
  )

/*++

Routine Description:

  Conduct PEIM dispatch.

Arguments:

  PeiStartupDescriptor - Pointer to IN EFI_PEI_STARTUP_DESCRIPTOR
  PrivateData          - Pointer to the private data passed in from caller
  DispatchData         - Pointer to PEI_CORE_DISPATCH_DATA data.

Returns:

  EFI_SUCCESS   - Successfully dispatched PEIM.
  EFI_NOT_FOUND - The dispatch failed.
            
--*/
;


VOID
InitializeDispatcherData (
  IN EFI_PEI_SERVICES             **PeiServices,
  IN PEI_CORE_INSTANCE            *OldCoreData,
  IN EFI_PEI_STARTUP_DESCRIPTOR   *PeiStartupDescriptor
  )
/*++

Routine Description:

  Initialize the Dispatcher's data members

Arguments:

  PeiServices          - The PEI core services table.
  OldCoreData          - Pointer to old core data (before switching stack).
                         NULL if being run in non-permament memory mode.
  PeiStartupDescriptor - Information and services provided by SEC phase.


Returns:

  None

--*/
;


EFI_STATUS
FindNextPeim (
  IN EFI_PEI_SERVICES            **PeiServices,
  IN EFI_FIRMWARE_VOLUME_HEADER  *FwVolHeader,
  IN OUT EFI_FFS_FILE_HEADER     **PeimFileHeader
  )
/*++

Routine Description:
    Given the input file pointer, search for the next matching file in the
    FFS volume. The search starts from FileHeader inside
    the Firmware Volume defined by FwVolHeader.

Arguments:
    PeiServices - Pointer to the PEI Core Services Table.

    FwVolHeader - Pointer to the FV header of the volume to search.
                     This parameter must point to a valid FFS volume.
                     
    PeimFileHeader  - Pointer to the current file from which to begin searching.
                  This pointer will be updated upon return to reflect the file found.

Returns:
    EFI_NOT_FOUND - No files matching the search criteria were found
    EFI_SUCCESS

--*/
;

BOOLEAN
Dispatched (
  IN UINT8  CurrentPeim,
  IN UINT32 DispatchedPeimBitMap
  )
/*++

Routine Description:

  This routine checks to see if a particular PEIM has been dispatched during
  the PEI core dispatch.

Arguments:
  CurrentPeim - The PEIM/FV in the bit array to check.
  DispatchedPeimBitMap - Bit array, each bit corresponds to a PEIM/FV.

Returns:
  TRUE if PEIM already dispatched
  FALSE if not

--*/
;

VOID
SetDispatched (
  IN EFI_PEI_SERVICES   **PeiServices,
  IN UINT8              CurrentPeim,
  OUT UINT32            *DispatchedPeimBitMap
  )
/*++

Routine Description:

  This routine sets a PEIM as having been dispatched once its entry
  point has been invoked.

Arguments:

  PeiServices          - The PEI core services table.
  CurrentPeim          - The PEIM/FV in the bit array to check.
  DispatchedPeimBitMap - Bit array, each bit corresponds to a PEIM/FV.

Returns:
  None

--*/
;

BOOLEAN
DepexSatisfied (
  IN EFI_PEI_SERVICES  **PeiServices,
  IN  VOID             *CurrentPeimAddress
  )
/*++

Routine Description:

  This routine parses the Dependency Expression, if available, and
  decides if the module can be executed.

Arguments:
  PeiServices - The PEI Service Table
  CurrentPeimAddress - Address of the PEIM Firmware File under investigation

Returns:
  TRUE  - Can be dispatched
  FALSE - Cannot be dispatched

--*/
;

VOID
SwitchCoreStacks (
  IN VOID  *EntryPoint,
  IN UINTN Parameter1,
  IN UINTN Parameter2,
  IN VOID  *NewStack
  )
/*++

Routine Description:

  Routine for PEI switching stacks.

Arguments:

  EntryPoint - Entry point with new stack.
  Parameter1 - First parameter for entry point.
  Parameter2 - Second parameter for entry point.
  NewStack   - Pointer to new stack.
  
Returns:

  None
  
--*/
;


#ifdef EFI64
  //
  // In Ipf we should make special changes for the PHIT pointers to support
  // recovery boot in cache mode.
  //
#define  SWITCH_TO_CACHE_MODE(CoreData)  SwitchToCacheMode(CoreData)
#define  CACHE_MODE_ADDRESS_MASK         0x7FFFFFFFFFFFFFFF
VOID
SwitchToCacheMode (
  IN PEI_CORE_INSTANCE           *CoreData
)
/*++

Routine Description:

 Switch the PHIT pointers to cache mode after InstallPeiMemory in CAR.

Arguments:

  CoreData   - The PEI core Private Data
  
Returns:
        
--*/
;

#else

#define  SWITCH_TO_CACHE_MODE(CoreData)

#endif

//
// PPI support functions
//
VOID
InitializePpiServices (
  IN EFI_PEI_SERVICES    **PeiServices,
  IN PEI_CORE_INSTANCE   *OldCoreData
  )
/*++

Routine Description:

  Initialize PPI services.

Arguments:

  PeiServices - The PEI core services table.
  OldCoreData - Pointer to the PEI Core data.
                NULL if being run in non-permament memory mode.

Returns:
  Nothing

--*/
;

VOID
ConvertPpiPointers (
  IN EFI_PEI_SERVICES              **PeiServices,
  IN EFI_HOB_HANDOFF_INFO_TABLE    *OldHandOffHob,
  IN EFI_HOB_HANDOFF_INFO_TABLE    *NewHandOffHob
  )
/*++

Routine Description:

  Migrate the Hob list from the CAR stack to PEI installed memory.

Arguments:

  PeiServices   - The PEI core services table.
  OldHandOffHob - The old handoff HOB list.
  NewHandOffHob - The new handoff HOB list.

Returns:
            
--*/
;

EFI_STATUS
EFIAPI
PeiInstallPpi (
  IN EFI_PEI_SERVICES        **PeiServices,
  IN EFI_PEI_PPI_DESCRIPTOR  *PpiList
  )
/*++

Routine Description:

  Install PPI services.

Arguments:

  PeiServices - Pointer to the PEI Service Table
  PpiList     - Pointer to a list of PEI PPI Descriptors.

Returns:

    EFI_SUCCESS             - if all PPIs in PpiList are successfully installed.
    EFI_INVALID_PARAMETER   - if PpiList is NULL pointer
    EFI_INVALID_PARAMETER   - if any PPI in PpiList is not valid
    EFI_OUT_OF_RESOURCES    - if there is no more memory resource to install PPI

--*/
;

EFI_STATUS
EFIAPI
PeiReInstallPpi (
  IN EFI_PEI_SERVICES        **PeiServices,
  IN EFI_PEI_PPI_DESCRIPTOR  *OldPpi,
  IN EFI_PEI_PPI_DESCRIPTOR  *NewPpi
  )
/*++

Routine Description:

  Re-Install PPI services.

Arguments:

  PeiServices - Pointer to the PEI Service Table
  OldPpi      - Pointer to the old PEI PPI Descriptors.
  NewPpi      - Pointer to the new PEI PPI Descriptors.

Returns:

  EFI_SUCCESS           - if the operation was successful
  EFI_INVALID_PARAMETER - if OldPpi or NewPpi is NULL
  EFI_INVALID_PARAMETER - if NewPpi is not valid
  EFI_NOT_FOUND         - if the PPI was not in the database

--*/
;

EFI_STATUS
EFIAPI
PeiLocatePpi (
  IN EFI_PEI_SERVICES            **PeiServices,
  IN EFI_GUID                    *Guid,
  IN UINTN                       Instance,
  IN OUT EFI_PEI_PPI_DESCRIPTOR  **PpiDescriptor,
  IN OUT VOID                    **Ppi
  )
/*++

Routine Description:

  Locate a given named PPI.

Arguments:

  PeiServices   - Pointer to the PEI Service Table
  Guid          - Pointer to GUID of the PPI.
  Instance      - Instance Number to discover.
  PpiDescriptor - Pointer to reference the found descriptor. If not NULL,
                returns a pointer to the descriptor (includes flags, etc)
  Ppi           - Pointer to reference the found PPI

Returns:

  Status -  EFI_SUCCESS   if the PPI is in the database           
            EFI_NOT_FOUND if the PPI is not in the database
--*/
;

EFI_STATUS
EFIAPI
PeiNotifyPpi (
  IN EFI_PEI_SERVICES           **PeiServices,
  IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyList
  )
/*++

Routine Description:

  Install a notification for a given PPI.

Arguments:

  PeiServices - Pointer to the PEI Service Table
  NotifyList  - Pointer to list of Descriptors to notify upon.

Returns:

  Status - EFI_SUCCESS          if successful
           EFI_OUT_OF_RESOURCES if no space in the database
           EFI_INVALID_PARAMETER if not a good decriptor

--*/
;