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