system76-edk2/MdeModulePkg/Universal/EsrtDxe/EsrtImpl.h

/** @file
  Esrt management implementation head file.

Copyright (c) 2015 - 2018, 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.

**/

#ifndef _DXE_ESRT_IMPL_H_
#define _DXE_ESRT_IMPL_H_

#include <Guid/EventGroup.h>
#include <Guid/SystemResourceTable.h>

#include <Library/UefiLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/PcdLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/CapsuleLib.h>

#include <Protocol/FirmwareManagement.h>
#include <Protocol/EsrtManagement.h>
#include <Protocol/VariableLock.h>

//
// Name of  Variable for Non-FMP ESRT Repository
//
#define EFI_ESRT_NONFMP_VARIABLE_NAME    L"EsrtNonFmp"

//
// Name of Variable for FMP
//
#define EFI_ESRT_FMP_VARIABLE_NAME       L"EsrtFmp"

//
// Attribute of Cached ESRT entry
//
#define ESRT_FROM_FMP                    0x00000001
#define ESRT_FROM_NONFMP                 0x00000002

typedef struct {
  EFI_HANDLE            Handle;
  //
  // Ready to boot event
  //
  EFI_EVENT             Event;

  //
  // Updates to Fmp storage must be locked.
  //
  EFI_LOCK              FmpLock;

  //
  // Update to Non-Fmp storage must be locked
  //
  EFI_LOCK              NonFmpLock;
} ESRT_PRIVATE_DATA;


/**
  Find Esrt Entry stored in ESRT repository.

  @param[in]     FwClass           Firmware class guid in Esrt entry
  @param[in]     Attribute         Esrt from Non FMP or FMP instance
  @param[out]    Entry             Esrt entry returned

  @retval EFI_SUCCESS            Successfully find an Esrt entry
  @retval EF_NOT_FOUND           No Esrt entry found

**/
EFI_STATUS
GetEsrtEntry (
  IN  EFI_GUID              *FwClass,
  IN  UINTN                 Attribute,
  OUT EFI_SYSTEM_RESOURCE_ENTRY *Entry
  );

/**
  Insert a new ESRT entry into ESRT Cache repository.

  @param[in]  Entry                Esrt entry to be set
  @param[in]  Attribute            Esrt from Esrt private protocol or FMP instance

  @retval EFI_SUCCESS          Successfully set a variable.

**/
EFI_STATUS
InsertEsrtEntry(
  IN EFI_SYSTEM_RESOURCE_ENTRY *Entry,
  UINTN                        Attribute
  );

/**
  Delete ESRT Entry from ESRT repository.

  @param[in]    FwClass              FwClass of Esrt entry to delete
  @param[in]    Attribute            Esrt from Esrt private protocol or FMP instance

  @retval EFI_SUCCESS         Insert all entries Successfully
  @retval EFI_NOT_FOUND       ESRT entry with FwClass doesn't exsit

**/
EFI_STATUS
DeleteEsrtEntry(
  IN  EFI_GUID        *FwClass,
  IN  UINTN           Attribute
  );

/**
  Update one ESRT entry in ESRT repository

  @param[in]    Entry                Esrt entry to be set
  @param[in]    Attribute            Esrt from Non Esrt or FMP instance

  @retval EFI_SUCCESS          Successfully Update a variable.
  @retval EFI_NOT_FOUND        The Esrt enry doesn't exist

**/
EFI_STATUS
UpdateEsrtEntry(
  IN EFI_SYSTEM_RESOURCE_ENTRY *Entry,
  UINTN                        Attribute
  );

/**
  Init one ESRT entry according to input FmpImageInfo (V1, V2, V3) .

  @param[in, out]    EsrtEntry             Esrt entry to be Init
  @param[in]         FmpImageInfo          FMP image info descriptor
  @param[in]         DescriptorVersion     FMP Image info descriptor version

**/
VOID
SetEsrtEntryFromFmpInfo (
  IN OUT EFI_SYSTEM_RESOURCE_ENTRY   *EsrtEntry,
  IN EFI_FIRMWARE_IMAGE_DESCRIPTOR   *FmpImageInfo,
  IN UINT32                          DescriptorVersion
  );

/**
  Get ESRT entry from ESRT Cache by FwClass Guid

  @param[in]       FwClass                FwClass of Esrt entry to get
  @param[in, out]  Entry                  Esrt entry returned

  @retval EFI_SUCCESS                   The variable saving this Esrt Entry exists.
  @retval EF_NOT_FOUND                  No correct variable found.
  @retval EFI_WRITE_PROTECTED           ESRT Cache repository is locked

**/
EFI_STATUS
EFIAPI
EsrtDxeGetEsrtEntry(
  IN     EFI_GUID                  *FwClass,
  IN OUT EFI_SYSTEM_RESOURCE_ENTRY *Entry
  );

/**
  Update one ESRT entry in ESRT Cache.

  @param[in]  Entry                         Esrt entry to be updated

  @retval EFI_SUCCESS                   Successfully update an ESRT entry in cache.
  @retval EFI_INVALID_PARAMETER  Entry does't exist in ESRT Cache
  @retval EFI_WRITE_PROTECTED     ESRT Cache is locked

**/
EFI_STATUS
EFIAPI
EsrtDxeUpdateEsrtEntry(
  IN EFI_SYSTEM_RESOURCE_ENTRY *Entry
  );

/**
  Non-FMP instance to unregister Esrt Entry from ESRT Cache.

  @param[in]    FwClass                FwClass of Esrt entry to Unregister

  @retval EFI_SUCCESS             Insert all entries Successfully
  @retval EFI_NOT_FOUND           Entry of FwClass does not exsit

**/
EFI_STATUS
EFIAPI
EsrtDxeUnRegisterEsrtEntry(
  IN  EFI_GUID        *FwClass
  );

/**
  Non-FMP instance to register one ESRT entry into ESRT Cache.

  @param[in]  Entry                Esrt entry to be set

  @retval EFI_SUCCESS          Successfully set a variable.
  @retval EFI_INVALID_PARAMETER  ESRT Entry is already exist
**/
EFI_STATUS
EFIAPI
EsrtDxeRegisterEsrtEntry(
  IN EFI_SYSTEM_RESOURCE_ENTRY *Entry
  );

/**
  This function syn up Cached ESRT with data from FMP instances
  Function should be called after Connect All in order to locate all FMP protocols
  installed.

  @retval EFI_SUCCESS                      Successfully sync cache repository from FMP instances
  @retval EFI_NOT_FOUND                   No FMP Instance are found
  @retval EFI_OUT_OF_RESOURCES     Resource allocaton fail

**/
EFI_STATUS
EFIAPI
EsrtDxeSyncFmp(
  VOID
  );

/**
  This function locks up Esrt repository to be readonly. It should be called
  before gEfiEndOfDxeEventGroupGuid event signaled

  @retval EFI_SUCCESS              Locks up FMP Non-FMP repository successfully

**/
EFI_STATUS
EFIAPI
EsrtDxeLockEsrtRepository(
  VOID
  );

#endif // #ifndef _EFI_ESRT_IMPL_H_