2 This file declares Temporary RAM Done PPI.
3 The PPI that provides a service to disable the use of Temporary RAM.
5 Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>
6 SPDX-License-Identifier: BSD-2-Clause-Patent
8 @par Revision Reference:
9 This PPI is introduced in PI Version 1.2.1.
13 #ifndef __TEMPORARY_RAM_DONE_H__
14 #define __TEMPORARY_RAM_DONE_H__
16 #define EFI_PEI_TEMPORARY_RAM_DONE_PPI_GUID \
17 { 0xceab683c, 0xec56, 0x4a2d, { 0xa9, 0x6, 0x40, 0x53, 0xfa, 0x4e, 0x9c, 0x16 } }
20 TemporaryRamDone() disables the use of Temporary RAM. If present, this service is invoked
21 by the PEI Foundation after the EFI_PEI_PERMANANT_MEMORY_INSTALLED_PPI is installed.
23 @retval EFI_SUCCESS Use of Temporary RAM was disabled.
24 @retval EFI_INVALID_PARAMETER Temporary RAM could not be disabled.
29 (EFIAPI
* EFI_PEI_TEMPORARY_RAM_DONE
) (
34 /// This is an optional PPI that may be produced by SEC or a PEIM. If present, it provide a service to
35 /// disable the use of Temporary RAM. This service may only be called by the PEI Foundation after the
36 /// transition from Temporary RAM to Permanent RAM is complete. This PPI provides an alternative
37 /// to the Temporary RAM Migration PPI for system architectures that allow Temporary RAM and
38 /// Permanent RAM to be enabled and accessed at the same time with no side effects.
40 typedef struct _EFI_PEI_TEMPORARY_RAM_DONE_PPI
{
41 EFI_PEI_TEMPORARY_RAM_DONE TemporaryRamDone
;
42 } EFI_PEI_TEMPORARY_RAM_DONE_PPI
;
44 extern EFI_GUID gEfiTemporaryRamDonePpiGuid
;