path: root/MdePkg/Library/PeiServicesLib/PeiServicesLib.c

/** @file
  Implementation for PEI Services Library.

  Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
  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 <PiPei.h>

#include <Ppi/FirmwareVolumeInfo.h>
#include <Guid/FirmwareFileSystem2.h>

#include <Library/PeiServicesLib.h>
#include <Library/PeiServicesTablePointerLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/BaseMemoryLib.h>


GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_PEI_PPI_DESCRIPTOR     mPpiListTemplate[] = {
  {
    (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
    &gEfiPeiFirmwareVolumeInfoPpiGuid,
    NULL
  }
};

/**
  This service enables a given PEIM to register an interface into the PEI Foundation.

  @param  PpiList               A pointer to the list of interfaces that the caller shall install.

  @retval EFI_SUCCESS           The interface was successfully installed.
  @retval EFI_INVALID_PARAMETER The PpiList pointer is NULL.
  @retval EFI_INVALID_PARAMETER Any of the PEI PPI descriptors in the list do not have the
                                EFI_PEI_PPI_DESCRIPTOR_PPI bit set in the Flags field.
  @retval EFI_OUT_OF_RESOURCES  There is no additional space in the PPI database.

**/
EFI_STATUS
EFIAPI
PeiServicesInstallPpi (
  IN CONST EFI_PEI_PPI_DESCRIPTOR     *PpiList
  )
{
  CONST EFI_PEI_SERVICES  **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->InstallPpi (PeiServices, PpiList);
}

/**
  This service enables PEIMs to replace an entry in the PPI database with an alternate entry.

  @param  OldPpi                The pointer to the old PEI PPI Descriptors.
  @param  NewPpi                The pointer to the new PEI PPI Descriptors.

  @retval EFI_SUCCESS           The interface was successfully installed.
  @retval EFI_INVALID_PARAMETER The OldPpi or NewPpi is NULL.
  @retval EFI_INVALID_PARAMETER Any of the PEI PPI descriptors in the list do not have the
                                EFI_PEI_PPI_DESCRIPTOR_PPI bit set in the Flags field.
  @retval EFI_OUT_OF_RESOURCES  There is no additional space in the PPI database.
  @retval EFI_NOT_FOUND         The PPI for which the reinstallation was requested has not been
                                installed.

**/
EFI_STATUS
EFIAPI
PeiServicesReInstallPpi (
  IN CONST EFI_PEI_PPI_DESCRIPTOR     *OldPpi,
  IN CONST EFI_PEI_PPI_DESCRIPTOR     *NewPpi
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->ReInstallPpi (PeiServices, OldPpi, NewPpi);
}

/**
  This service enables PEIMs to discover a given instance of an interface.

  @param  Guid                  A pointer to the GUID whose corresponding interface needs to be
                                found.
  @param  Instance              The N-th instance of the interface that is required.
  @param  PpiDescriptor         A pointer to instance of the EFI_PEI_PPI_DESCRIPTOR.
  @param  Ppi                   A pointer to the instance of the interface.

  @retval EFI_SUCCESS           The interface was successfully returned.
  @retval EFI_NOT_FOUND         The PPI descriptor is not found in the database.

**/
EFI_STATUS
EFIAPI
PeiServicesLocatePpi (
  IN CONST EFI_GUID                   *Guid,
  IN UINTN                      Instance,
  IN OUT EFI_PEI_PPI_DESCRIPTOR **PpiDescriptor,
  IN OUT VOID                   **Ppi
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->LocatePpi (PeiServices, Guid, Instance, PpiDescriptor, Ppi);
}

/**
  This service enables PEIMs to register a given service to be invoked when another service is
  installed or reinstalled.

  @param  NotifyList            A pointer to the list of notification interfaces 
                                that the caller shall install.

  @retval EFI_SUCCESS           The interface was successfully installed.
  @retval EFI_INVALID_PARAMETER The NotifyList pointer is NULL.
  @retval EFI_INVALID_PARAMETER Any of the PEI notify descriptors in the list do
                                 not have the EFI_PEI_PPI_DESCRIPTOR_NOTIFY_TYPES
                                 bit set in the Flags field.
  @retval EFI_OUT_OF_RESOURCES  There is no additional space in the PPI database.

**/
EFI_STATUS
EFIAPI
PeiServicesNotifyPpi (
  IN CONST EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyList
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->NotifyPpi (PeiServices, NotifyList);
}

/**
  This service enables PEIMs to ascertain the present value of the boot mode.

  @param  BootMode              A pointer to contain the value of the boot mode.

  @retval EFI_SUCCESS           The boot mode was returned successfully.
  @retval EFI_INVALID_PARAMETER BootMode is NULL.

**/
EFI_STATUS
EFIAPI
PeiServicesGetBootMode (
  OUT EFI_BOOT_MODE          *BootMode
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->GetBootMode (PeiServices, BootMode);
}

/**
  This service enables PEIMs to update the boot mode variable.

  @param  BootMode              The value of the boot mode to set.

  @retval EFI_SUCCESS           The value was successfully updated

**/
EFI_STATUS
EFIAPI
PeiServicesSetBootMode (
  IN EFI_BOOT_MODE              BootMode
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->SetBootMode (PeiServices, BootMode);
}

/**
  This service enables a PEIM to ascertain the address of the list of HOBs in memory.

  @param  HobList               A pointer to the list of HOBs that the PEI Foundation 
                                will initialize.
  
  @retval EFI_SUCCESS           The list was successfully returned.
  @retval EFI_NOT_AVAILABLE_YET The HOB list is not yet published.

**/
EFI_STATUS
EFIAPI
PeiServicesGetHobList (
  OUT VOID                      **HobList
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->GetHobList (PeiServices, HobList);
}

/**
  This service enables PEIMs to create various types of HOBs.

  @param  Type                  The type of HOB to be installed.
  @param  Length                The length of the HOB to be added.
  @param  Hob                   The address of a pointer that will contain the 
                                HOB header.

  @retval EFI_SUCCESS           The HOB was successfully created.
  @retval EFI_OUT_OF_RESOURCES  There is no additional space for HOB creation.

**/
EFI_STATUS
EFIAPI
PeiServicesCreateHob (
  IN UINT16                     Type,
  IN UINT16                     Length,
  OUT VOID                      **Hob
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->CreateHob (PeiServices, Type, Length, Hob);
}

/**
  This service enables PEIMs to discover additional firmware volumes.

  @param  Instance              This instance of the firmware volume to find.  The 
                                value 0 is the Boot Firmware Volume (BFV).
  @param  VolumeHandle          Handle of the firmware volume header of the volume
                                to return.

  @retval EFI_SUCCESS           The volume was found.
  @retval EFI_NOT_FOUND         The volume was not found.
  @retval EFI_INVALID_PARAMETER FwVolHeader is NULL.

**/
EFI_STATUS
EFIAPI
PeiServicesFfsFindNextVolume (
  IN UINTN                          Instance,
  IN OUT EFI_PEI_FV_HANDLE          *VolumeHandle
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->FfsFindNextVolume (PeiServices, Instance, VolumeHandle);
}

/**
  This service enables PEIMs to discover additional firmware files.

  @param  SearchType            A filter to find files only of this type.
  @param  VolumeHandle          The pointer to the firmware volume header of the 
                                volume to search. This parameter must point to a 
                                valid FFS volume. 
  @param  FileHandle            Handle of the current file from which to begin searching.

  @retval EFI_SUCCESS           The file was found.
  @retval EFI_NOT_FOUND         The file was not found.
  @retval EFI_NOT_FOUND         The header checksum was not zero.

**/
EFI_STATUS
EFIAPI
PeiServicesFfsFindNextFile (
  IN EFI_FV_FILETYPE            SearchType,
  IN EFI_PEI_FV_HANDLE          VolumeHandle,
  IN OUT EFI_PEI_FILE_HANDLE    *FileHandle
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->FfsFindNextFile (PeiServices, SearchType, VolumeHandle, FileHandle);
}

/**
  This service enables PEIMs to discover sections of a given type within a valid FFS file.

  @param  SectionType           The value of the section type to find.
  @param  FileHandle            A pointer to the file header that contains the set 
                                of sections to be searched.
  @param  SectionData           A pointer to the discovered section, if successful.

  @retval EFI_SUCCESS           The section was found.
  @retval EFI_NOT_FOUND         The section was not found.

**/
EFI_STATUS
EFIAPI
PeiServicesFfsFindSectionData (
  IN EFI_SECTION_TYPE           SectionType,
  IN EFI_PEI_FILE_HANDLE        FileHandle,
  OUT VOID                      **SectionData
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->FfsFindSectionData (PeiServices, SectionType, FileHandle, SectionData);
}

/**
  This service enables PEIMs to register the permanent memory configuration
  that has been initialized with the PEI Foundation.

  @param  MemoryBegin           The value of a region of installed memory.
  @param  MemoryLength          The corresponding length of a region of installed memory.

  @retval EFI_SUCCESS           The region was successfully installed in a HOB.
  @retval EFI_INVALID_PARAMETER MemoryBegin and MemoryLength are illegal for this system.
  @retval EFI_OUT_OF_RESOURCES  There is no additional space for HOB creation.

**/
EFI_STATUS
EFIAPI
PeiServicesInstallPeiMemory (
  IN EFI_PHYSICAL_ADDRESS       MemoryBegin,
  IN UINT64                     MemoryLength
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->InstallPeiMemory (PeiServices, MemoryBegin, MemoryLength);
}

/**
  This service enables PEIMs to allocate memory after the permanent memory has been
   installed by a PEIM.

  @param  MemoryType            Type of memory to allocate.
  @param  Pages                 The number of pages to allocate.
  @param  Memory                Pointer of memory allocated.

  @retval EFI_SUCCESS           The memory range was successfully allocated.
  @retval EFI_INVALID_PARAMETER Type is not equal to AllocateAnyPages.
  @retval EFI_NOT_AVAILABLE_YET Called with permanent memory not available.
  @retval EFI_OUT_OF_RESOURCES  The pages could not be allocated.

**/
EFI_STATUS
EFIAPI
PeiServicesAllocatePages (
  IN EFI_MEMORY_TYPE            MemoryType,
  IN UINTN                      Pages,
  OUT EFI_PHYSICAL_ADDRESS      *Memory
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->AllocatePages (PeiServices, MemoryType, Pages, Memory);
}

/**
  This service allocates memory from the Hand-Off Block (HOB) heap.

  @param  Size                  The number of bytes to allocate from the pool.
  @param  Buffer                If the call succeeds, a pointer to a pointer to 
                                the allocate buffer; otherwise, undefined.

  @retval EFI_SUCCESS           The allocation was successful
  @retval EFI_OUT_OF_RESOURCES  There is not enough heap to allocate the requested size.

**/
EFI_STATUS
EFIAPI
PeiServicesAllocatePool (
  IN UINTN                      Size,
  OUT VOID                      **Buffer
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->AllocatePool (PeiServices, Size, Buffer);
}

/**
  Resets the entire platform.

  @retval EFI_SUCCESS           The function completed successfully.
  @retval EFI_NOT_AVAILABLE_YET The service has not been installed yet.

**/
EFI_STATUS
EFIAPI
PeiServicesResetSystem (
  VOID
  )
{
  CONST EFI_PEI_SERVICES **PeiServices;

  PeiServices = GetPeiServicesTablePointer ();
  return (*PeiServices)->ResetSystem (PeiServices);
}

/**
  This service is a wrapper for the PEI Service RegisterForShadow(), except the 
  pointer to the PEI Services Table has been removed.  See the Platform 
  Initialization Pre-EFI Initialization Core Interface Specification for details. 

  @param FileHandle             PEIM's file handle. Must be the currently
                                executing PEIM.
  
  @retval EFI_SUCCESS           The PEIM was successfully registered for
                                shadowing.

  @retval EFI_ALREADY_STARTED   The PEIM was previously
                                registered for shadowing.

  @retval EFI_NOT_FOUND         The FileHandle does not refer to a
                                valid file handle.
**/
EFI_STATUS
EFIAPI
PeiServicesRegisterForShadow (
  IN  EFI_PEI_FILE_HANDLE FileHandle
  )
{
  return (*GetPeiServicesTablePointer())->RegisterForShadow (FileHandle);
}

/**
  This service is a wrapper for the PEI Service FfsGetFileInfo(), except the pointer to the PEI Services 
  Table has been removed.  See the Platform Initialization Pre-EFI Initialization Core Interface 
  Specification for details. 

  @param FileHandle              The handle of the file.

  @param FileInfo                 Upon exit, points to the file's
                                  information.

  @retval EFI_SUCCESS             File information returned.
  
  @retval EFI_INVALID_PARAMETER   If FileHandle does not
                                  represent a valid file.
  
  @retval EFI_INVALID_PARAMETER   FileInfo is NULL.
  
**/
EFI_STATUS
EFIAPI 
PeiServicesFfsGetFileInfo (
  IN CONST  EFI_PEI_FILE_HANDLE   FileHandle,
  OUT EFI_FV_FILE_INFO            *FileInfo
  )
{
  return (*GetPeiServicesTablePointer())->FfsGetFileInfo (FileHandle, FileInfo);
}


/**
  This service is a wrapper for the PEI Service FfsFindByName(), except the pointer to the PEI Services 
  Table has been removed.  See the Platform Initialization Pre-EFI Initialization Core Interface 
  Specification for details. 

  @param FileName                 A pointer to the name of the file to
                                  find within the firmware volume.

  @param VolumeHandle             The firmware volume to search FileHandle
                                  Upon exit, points to the found file's
                                  handle or NULL if it could not be found.
  @param FileHandle               The pointer to found file handle 

  @retval EFI_SUCCESS             File was found.

  @retval EFI_NOT_FOUND           File was not found.

  @retval EFI_INVALID_PARAMETER   VolumeHandle or FileHandle or
                                  FileName was NULL.

**/
EFI_STATUS
EFIAPI
PeiServicesFfsFindFileByName (
  IN CONST  EFI_GUID            *FileName,
  IN CONST  EFI_PEI_FV_HANDLE   VolumeHandle,
  OUT       EFI_PEI_FILE_HANDLE *FileHandle
  )
{
  return (*GetPeiServicesTablePointer())->FfsFindFileByName (FileName, VolumeHandle, FileHandle);
}


/**
  This service is a wrapper for the PEI Service FfsGetVolumeInfo(), except the pointer to the PEI Services 
  Table has been removed.  See the Platform Initialization Pre-EFI Initialization Core Interface 
  Specification for details. 

  @param VolumeHandle             Handle of the volume.

  @param VolumeInfo               Upon exit, points to the volume's
                                  information.

  @retval EFI_SUCCESS             File information returned.
  
  @retval EFI_INVALID_PARAMETER   If FileHandle does not
                                  represent a valid file.
  
  @retval EFI_INVALID_PARAMETER   If FileInfo is NULL.

**/
EFI_STATUS
EFIAPI
PeiServicesFfsGetVolumeInfo (
  IN  EFI_PEI_FV_HANDLE       VolumeHandle,
  OUT EFI_FV_INFO             *VolumeInfo
  )
{
  return (*GetPeiServicesTablePointer())->FfsGetVolumeInfo (VolumeHandle, VolumeInfo);
}

/**
  Install a EFI_PEI_FIRMWARE_VOLUME_INFO_PPI instance so the PEI Core will be notified about a new firmware volume.
  
  This function allocates, initializes, and installs a new EFI_PEI_FIRMWARE_VOLUME_INFO_PPI using 
  the parameters passed in to initialize the fields of the EFI_PEI_FIRMWARE_VOLUME_INFO_PPI instance.
  If the resources can not be allocated for EFI_PEI_FIRMWARE_VOLUME_INFO_PPI, then ASSERT().
  If the EFI_PEI_FIRMWARE_VOLUME_INFO_PPI can not be installed, then ASSERT().

  
  @param  FvFormat             Unique identifier of the format of the memory-mapped 
                               firmware volume.  This parameter is optional and 
                               may be NULL.  If NULL is specified, the 
                               EFI_FIRMWARE_FILE_SYSTEM2_GUID format is assumed.
  @param  FvInfo               Points to a buffer which allows the 
                               EFI_PEI_FIRMWARE_VOLUME_PPI to process the volume. 
                               The format of this buffer is specific to the FvFormat. 
                               For memory-mapped firmware volumes, this typically 
                               points to the first byte of the firmware volume.
  @param  FvInfoSize           The size, in bytes, of FvInfo. For memory-mapped 
                               firmware volumes, this is typically the size of 
                               the firmware volume.
  @param  ParentFvName         If the new firmware volume originated from a file 
                               in a different firmware volume, then this parameter 
                               specifies the GUID name of the originating firmware
                               volume. Otherwise, this parameter must be NULL.
  @param  ParentFileName       If the new firmware volume originated from a file 
                               in a different firmware volume, then this parameter 
                               specifies the GUID file name of the originating 
                               firmware file. Otherwise, this parameter must be NULL.
**/
VOID
EFIAPI
PeiServicesInstallFvInfoPpi (
  IN CONST EFI_GUID                *FvFormat, OPTIONAL
  IN CONST VOID                    *FvInfo,
  IN       UINT32                  FvInfoSize,
  IN CONST EFI_GUID                *ParentFvName, OPTIONAL
  IN CONST EFI_GUID                *ParentFileName OPTIONAL
  )
{
  EFI_STATUS                       Status;   
  EFI_PEI_FIRMWARE_VOLUME_INFO_PPI *FvInfoPpi;
  EFI_PEI_PPI_DESCRIPTOR           *FvInfoPpiDescriptor;
  EFI_GUID                         *ParentFvNameValue;
  EFI_GUID                         *ParentFileNameValue;

  ParentFvNameValue   = NULL;
  ParentFileNameValue = NULL;
  FvInfoPpi = AllocateZeroPool (sizeof (EFI_PEI_FIRMWARE_VOLUME_INFO_PPI));
  ASSERT(FvInfoPpi != NULL);

  if (FvFormat != NULL) {
    CopyGuid (&FvInfoPpi->FvFormat, FvFormat);
  } else {
    CopyGuid (&FvInfoPpi->FvFormat, &gEfiFirmwareFileSystem2Guid);
  }
  FvInfoPpi->FvInfo = (VOID *) FvInfo;
  FvInfoPpi->FvInfoSize = FvInfoSize;
  if (ParentFvName != NULL) {
    ParentFvNameValue = AllocateCopyPool (sizeof (EFI_GUID), ParentFvName);
    ASSERT (ParentFvNameValue != NULL);
    FvInfoPpi->ParentFvName = ParentFvNameValue;
  }
  if (ParentFileName != NULL) {
    ParentFileNameValue = AllocateCopyPool (sizeof (EFI_GUID), ParentFileName);
    ASSERT (ParentFileNameValue != NULL);
    FvInfoPpi->ParentFileName = ParentFileNameValue;
  }

  FvInfoPpiDescriptor = AllocateCopyPool (sizeof(EFI_PEI_PPI_DESCRIPTOR), mPpiListTemplate);
  ASSERT (FvInfoPpiDescriptor != NULL);

  FvInfoPpiDescriptor->Ppi   = (VOID *) FvInfoPpi;
  Status = PeiServicesInstallPpi (FvInfoPpiDescriptor);
  ASSERT_EFI_ERROR (Status);

}