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58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/** @file
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EFI SMM Communication PPI definition.
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This Ppi provides a means of communicating between PEIM and SMI
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handlers inside of SMM.
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This Ppi is produced and consumed only in S3 resume boot path.
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It is NOT available in normal boot path.
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Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _SMM_COMMUNICATION_PPI_H_
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#define _SMM_COMMUNICATION_PPI_H_
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#define EFI_PEI_SMM_COMMUNICATION_PPI_GUID \
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{ \
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0xae933e1c, 0xcc47, 0x4e38, { 0x8f, 0xe, 0xe2, 0xf6, 0x1d, 0x26, 0x5, 0xdf } \
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}
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typedef struct _EFI_PEI_SMM_COMMUNICATION_PPI EFI_PEI_SMM_COMMUNICATION_PPI;
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/**
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Communicates with a registered handler.
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This function provides a service to send and receive messages from a registered UEFI service.
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@param[in] This The EFI_PEI_SMM_COMMUNICATION_PPI instance.
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@param[in] CommBuffer A pointer to the buffer to convey into SMRAM.
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@param[in] CommSize The size of the data buffer being passed in.On exit, the size of data
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being returned. Zero if the handler does not wish to reply with any data.
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@retval EFI_SUCCESS The message was successfully posted.
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@retval EFI_INVALID_PARAMETER The CommBuffer was NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_SMM_COMMUNICATE)(
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IN CONST EFI_PEI_SMM_COMMUNICATION_PPI *This,
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IN OUT VOID *CommBuffer,
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IN OUT UINTN *CommSize
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);
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///
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/// EFI SMM Communication Protocol provides runtime services for communicating
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/// between DXE drivers and a registered SMI handler.
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///
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struct _EFI_PEI_SMM_COMMUNICATION_PPI {
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EFI_PEI_SMM_COMMUNICATE Communicate;
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};
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extern EFI_GUID gEfiPeiSmmCommunicationPpiGuid;
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#endif
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