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/** @file
This file declares Temporary RAM Support PPI.
This Ppi provides the service that migrates temporary RAM into permanent memory.
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Revision Reference:
This PPI is introduced in PI Version 1.0.
**/
#ifndef __TEMPORARY_RAM_SUPPORT_H__
#define __TEMPORARY_RAM_SUPPORT_H__
///
/// Note: The GUID name EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI_GUID is different from the current
/// PI 1.2 spec.
///
#define EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI_GUID \
{ 0xdbe23aa9, 0xa345, 0x4b97, {0x85, 0xb6, 0xb2, 0x26, 0xf1, 0x61, 0x73, 0x89} }
/**
This service of the EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI that migrates temporary RAM into
permanent memory.
@param PeiServices Pointer to the PEI Services Table.
@param TemporaryMemoryBase Source Address in temporary memory from which the SEC or PEIM will copy the
Temporary RAM contents.
@param PermanentMemoryBase Destination Address in permanent memory into which the SEC or PEIM will copy the
Temporary RAM contents.
@param CopySize Amount of memory to migrate from temporary to permanent memory.
@retval EFI_SUCCESS The data was successfully returned.
@retval EFI_INVALID_PARAMETER PermanentMemoryBase + CopySize > TemporaryMemoryBase when
TemporaryMemoryBase > PermanentMemoryBase.
**/
typedef
EFI_STATUS
(EFIAPI * TEMPORARY_RAM_MIGRATION)(
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
IN UINTN CopySize
);
///
/// This service abstracts the ability to migrate contents of the platform early memory store.
/// Note: The name EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI is different from the current PI 1.2 spec.
/// This PPI was optional.
///
typedef struct {
TEMPORARY_RAM_MIGRATION TemporaryRamMigration;
} EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI;
extern EFI_GUID gEfiTemporaryRamSupportPpiGuid;
#endif
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