mirror of https://github.com/acidanthera/audk.git
88 lines
3.4 KiB
C
88 lines
3.4 KiB
C
/** @file
|
|
EFI SMM Base2 Protocol as defined in the PI 1.2 specification.
|
|
|
|
This protocol is utilized by all SMM drivers to locate the SMM infrastructure services and determine
|
|
whether the driver is being invoked inside SMRAM or outside of SMRAM.
|
|
|
|
Copyright (c) 2009, Intel Corporation
|
|
All rights reserved. This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
#ifndef _SMM_BASE2_H_
|
|
#define _SMM_BASE2_H_
|
|
|
|
#include <Pi/PiSmmCis.h>
|
|
|
|
#define EFI_SMM_BASE2_PROTOCOL_GUID \
|
|
{ \
|
|
0xf4ccbfb7, 0xf6e0, 0x47fd, {0x9d, 0xd4, 0x10, 0xa8, 0xf1, 0x50, 0xc1, 0x91 } \
|
|
}
|
|
|
|
typedef struct _EFI_SMM_BASE2_PROTOCOL EFI_SMM_BASE2_PROTOCOL;
|
|
|
|
/**
|
|
Service to indicate whether the driver is currently executing in the SMM Initialization phase.
|
|
|
|
This service is used to indicate whether the driver is currently executing in the SMM Initialization
|
|
phase. For SMM drivers, this will return TRUE in InSmram while inside the driver's entry point and
|
|
otherwise FALSE. For combination SMM/DXE drivers, this will return FALSE in the DXE launch. For the
|
|
SMM launch, it behaves as an SMM driver.
|
|
|
|
@param[in] This The EFI_SMM_BASE2_PROTOCOL instance.
|
|
@param[out] InSmram Pointer to a Boolean which, on return, indicates that the driver is
|
|
currently executing inside of SMRAM (TRUE) or outside of SMRAM (FALSE).
|
|
|
|
@retval EFI_SUCCESS The call returned successfully.
|
|
@retval EFI_INVALID_PARAMETER InSmram was NULL.
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_SMM_INSIDE_OUT)(
|
|
IN CONST EFI_SMM_BASE2_PROTOCOL *This,
|
|
OUT BOOLEAN *InSmram
|
|
)
|
|
;
|
|
|
|
/**
|
|
Returns the location of the System Management Service Table (SMST).
|
|
|
|
This function returns the location of the System Management Service Table (SMST). The use of the
|
|
API is such that a driver can discover the location of the SMST in its entry point and then cache it in
|
|
some driver global variable so that the SMST can be invoked in subsequent handlers.
|
|
|
|
@param[in] This The EFI_SMM_BASE2_PROTOCOL instance.
|
|
@param[in,out] Smst On return, points to a pointer to the System Management Service Table (SMST).
|
|
|
|
@retval EFI_SUCCESS The operation was successful.
|
|
@retval EFI_INVALID_PARAMETER Smst was invalid.
|
|
@retval EFI_UNSUPPORTED Not in SMM.
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_SMM_GET_SMST_LOCATION)(
|
|
IN CONST EFI_SMM_BASE2_PROTOCOL *This,
|
|
IN OUT EFI_SMM_SYSTEM_TABLE **Smst
|
|
)
|
|
;
|
|
|
|
///
|
|
/// EFI SMM Base2 Protocol is utilized by all SMM drivers to locate the SMM infrastructure
|
|
/// services and determine whether the driver is being invoked inside SMRAM or outside of SMRAM.
|
|
///
|
|
struct _EFI_SMM_BASE2_PROTOCOL {
|
|
EFI_SMM_INSIDE_OUT InSmm;
|
|
EFI_SMM_GET_SMST_LOCATION GetSmstLocation;
|
|
};
|
|
|
|
extern EFI_GUID gEfiSmmBase2ProtocolGuid;
|
|
|
|
#endif
|
|
|