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82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/** @file
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EFI MM Base Protocol as defined in the PI 1.5 specification.
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This protocol is utilized by all MM drivers to locate the MM infrastructure services and determine
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whether the driver is being invoked inside MMRAM or outside of MMRAM.
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Copyright (c) 2017, 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 _MM_BASE_H_
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#define _MM_BASE_H_
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#include <Pi/PiMmCis.h>
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#define EFI_MM_BASE_PROTOCOL_GUID \
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{ \
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0xf4ccbfb7, 0xf6e0, 0x47fd, {0x9d, 0xd4, 0x10, 0xa8, 0xf1, 0x50, 0xc1, 0x91 } \
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}
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typedef struct _EFI_MM_BASE_PROTOCOL EFI_MM_BASE_PROTOCOL;
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/**
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Service to indicate whether the driver is currently executing in the MM Initialization phase.
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This service is used to indicate whether the driver is currently executing in the MM Initialization
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phase. For MM drivers, this will return TRUE in InMmram while inside the driver's entry point and
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otherwise FALSE. For combination MM/DXE drivers, this will return FALSE in the DXE launch. For the
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MM launch, it behaves as an MM driver.
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@param[in] This The EFI_MM_BASE_PROTOCOL instance.
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@param[out] InMmram Pointer to a Boolean which, on return, indicates that the driver is
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currently executing inside of MMRAM (TRUE) or outside of MMRAM (FALSE).
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@retval EFI_SUCCESS The call returned successfully.
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@retval EFI_INVALID_PARAMETER InMmram was NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_MM_INSIDE_OUT)(
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IN CONST EFI_MM_BASE_PROTOCOL *This,
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OUT BOOLEAN *InMmram
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)
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;
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/**
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Returns the location of the Management Mode Service Table (MMST).
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This function returns the location of the Management Mode Service Table (MMST). The use of the
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API is such that a driver can discover the location of the MMST in its entry point and then cache it in
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some driver global variable so that the MMST can be invoked in subsequent handlers.
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@param[in] This The EFI_MM_BASE_PROTOCOL instance.
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@param[in,out] Mmst On return, points to a pointer to the Management Mode Service Table (MMST).
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@retval EFI_SUCCESS The operation was successful.
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@retval EFI_INVALID_PARAMETER Mmst was invalid.
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@retval EFI_UNSUPPORTED Not in MM.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_MM_GET_MMST_LOCATION)(
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IN CONST EFI_MM_BASE_PROTOCOL *This,
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IN OUT EFI_MM_SYSTEM_TABLE **Mmst
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)
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;
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///
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/// EFI MM Base Protocol is utilized by all MM drivers to locate the MM infrastructure
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/// services and determine whether the driver is being invoked inside MMRAM or outside of MMRAM.
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///
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struct _EFI_MM_BASE_PROTOCOL {
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EFI_MM_INSIDE_OUT InMm;
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EFI_MM_GET_MMST_LOCATION GetMmstLocation;
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};
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extern EFI_GUID gEfiMmBaseProtocolGuid;
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#endif
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