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