SmramInternal.h File Reference

#include <Pi/PiMultiPhase.h>
#include <Guid/SmramMemoryReserve.h>
#include <Library/HobLib.h>

Go to the source code of this file.

Functions
VOID	InitQ35TsegMbytes (VOID)
VOID	InitQ35SmramAtDefaultSmbase (VOID)
VOID	GetStates (OUT BOOLEAN *LockState, OUT BOOLEAN *OpenState)
EFI_STATUS	SmramAccessOpen (OUT BOOLEAN *LockState, OUT BOOLEAN *OpenState)
EFI_STATUS	SmramAccessClose (OUT BOOLEAN *LockState, OUT BOOLEAN *OpenState)
EFI_STATUS	SmramAccessLock (OUT BOOLEAN *LockState, IN OUT BOOLEAN *OpenState)
EFI_STATUS	SmramAccessGetCapabilities (IN OUT UINTN *SmramMapSize, IN OUT EFI_SMRAM_DESCRIPTOR *SmramMap)

Variables
UINT16	mQ35TsegMbytes

Detailed Description

Functions and types shared by the SMM accessor PEI and DXE modules.

Copyright (C) 2015, Red Hat, Inc. Copyright (c) 2024 Intel Corporation.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file SmramInternal.h.

Function Documentation

GetStates()

VOID GetStates	(	OUT BOOLEAN *	LockState,
		OUT BOOLEAN *	OpenState
	)

Read the MCH_SMRAM and ESMRAMC registers, and update the LockState and OpenState fields in the PEI_SMM_ACCESS_PPI / EFI_SMM_ACCESS2_PROTOCOL object, from the D_LCK and T_EN bits.

PEI_SMM_ACCESS_PPI and EFI_SMM_ACCESS2_PROTOCOL member functions can rely on the LockState and OpenState fields being up-to-date on entry, and they need to restore the same invariant on exit, if they touch the bits in question.

Parameters

[out]	LockState	Reflects the D_LCK bit on output; TRUE iff SMRAM is locked.
[out]	OpenState	Reflects the inverse of the T_EN bit on output; TRUE iff SMRAM is open.

Definition at line 66 of file SmramInternal.c.

InitQ35SmramAtDefaultSmbase()

VOID InitQ35SmramAtDefaultSmbase

(

VOID

)

Save PcdQ35SmramAtDefaultSmbase into mQ35SmramAtDefaultSmbase.

Definition at line 44 of file SmramInternal.c.

InitQ35TsegMbytes()

VOID InitQ35TsegMbytes

(

VOID

)

Save PcdQ35TsegMbytes into mQ35TsegMbytes.

Definition at line 33 of file SmramInternal.c.

SmramAccessClose()

EFI_STATUS SmramAccessClose	(	OUT BOOLEAN *	LockState,
		OUT BOOLEAN *	OpenState
	)

Definition at line 114 of file SmramInternal.c.

SmramAccessGetCapabilities()

EFI_STATUS SmramAccessGetCapabilities	(	IN OUT UINTN *	SmramMapSize,
		IN OUT EFI_SMRAM_DESCRIPTOR *	SmramMap
	)

Definition at line 167 of file SmramInternal.c.

SmramAccessLock()

EFI_STATUS SmramAccessLock	(	OUT BOOLEAN *	LockState,
		IN OUT BOOLEAN *	OpenState
	)

Definition at line 133 of file SmramInternal.c.

SmramAccessOpen()

EFI_STATUS SmramAccessOpen	(	OUT BOOLEAN *	LockState,
		OUT BOOLEAN *	OpenState
	)

Definition at line 92 of file SmramInternal.c.

Variable Documentation

mQ35TsegMbytes

UINT16 mQ35TsegMbytes

extern

Definition at line 44 of file MemDetect.c.