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