EventHandle.c File Reference

#include <Base.h>
#include <Pi/PiMmCis.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <Protocol/DebugSupport.h>
#include <Guid/ZeroGuid.h>
#include <Guid/MmramMemoryReserve.h>
#include <StandaloneMmCpu.h>

Go to the source code of this file.

Functions
EFI_STATUS EFIAPI	MmFoundationEntryRegister (IN CONST EFI_MM_CONFIGURATION_PROTOCOL *This, IN EFI_MM_ENTRY_POINT MmEntryPoint)
STATIC EFI_STATUS	CheckBufferAddr (IN UINTN BufferAddr)
EFI_STATUS	PiMmStandaloneMmCpuDriverEntry (IN UINTN EventId, IN UINTN CpuNumber, IN UINTN NsCommBufferAddr)
EFI_STATUS EFIAPI	PiMmCpuTpFwRootMmiHandler (IN EFI_HANDLE DispatchHandle, IN CONST VOID *Context OPTIONAL, IN OUT VOID *CommBuffer OPTIONAL, IN OUT UINTN *CommBufferSize OPTIONAL)

Variables
EFI_MM_COMMUNICATE_HEADER **	PerCpuGuidedEventContext = NULL
EFI_MMRAM_DESCRIPTOR	mNsCommBuffer
EFI_MMRAM_DESCRIPTOR	mSCommBuffer
MP_INFORMATION_HOB_DATA *	mMpInformationHobData
EFI_MM_CONFIGURATION_PROTOCOL	mMmConfig
STATIC EFI_MM_ENTRY_POINT	mMmEntryPoint = NULL

Detailed Description

Copyright (c) 2016 HP Development Company, L.P. Copyright (c) 2016 - 2021, Arm Limited. All rights reserved. Copyright (c) 2021, Linaro Limited Copyright (c) 2023, Ventana Micro System Inc. All rights reserved.

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

Definition in file EventHandle.c.

Function Documentation

CheckBufferAddr()

STATIC EFI_STATUS CheckBufferAddr

(

IN UINTN

BufferAddr

)

Perform bounds check on the common buffer.

Parameters

[in]

BufferAddr

Address of the common buffer.

Return values

EFI_SUCCESS	Success.
EFI_ACCESS_DENIED	Access not permitted.

Definition at line 69 of file EventHandle.c.

MmFoundationEntryRegister()

EFI_STATUS EFIAPI MmFoundationEntryRegister	(	IN CONST EFI_MM_CONFIGURATION_PROTOCOL *	This,
		IN EFI_MM_ENTRY_POINT	MmEntryPoint
	)

Registers the MM foundation entry point.

Parameters

[in]	This	Pointer to the MM Configuration protocol.
[in]	MmEntryPoint	Function pointer to the MM Entry point.

Return values

EFI_SUCCESS

Success.

Definition at line 213 of file EventHandle.c.

PiMmCpuTpFwRootMmiHandler()

EFI_STATUS EFIAPI PiMmCpuTpFwRootMmiHandler	(	IN EFI_HANDLE	DispatchHandle,
		IN CONST VOID *Context	OPTIONAL,
		IN OUT VOID *CommBuffer	OPTIONAL,
		IN OUT UINTN *CommBufferSize	OPTIONAL
	)

This function is the main entry point for an MM handler dispatch or communicate-based callback.

Parameters

DispatchHandle	The unique handle assigned to this handler by MmiHandlerRegister().
Context	Points to an optional handler context which was specified when the handler was registered.
CommBuffer	A pointer to a collection of data in memory that will be conveyed from a non-MM environment into an MM environment.
CommBufferSize	The size of the CommBuffer.

Returns

Status Code

Definition at line 241 of file EventHandle.c.

PiMmStandaloneMmCpuDriverEntry()

EFI_STATUS PiMmStandaloneMmCpuDriverEntry	(	IN UINTN	EventId,
		IN UINTN	CpuNumber,
		IN UINTN	NsCommBufferAddr
	)

The PI Standalone MM entry point for the CPU driver.

Parameters

[in]	EventId	The event Id.
[in]	CpuNumber	The CPU number.
[in]	NsCommBufferAddr	Address of the NS common buffer.

Return values

EFI_SUCCESS	Success.
EFI_INVALID_PARAMETER	A parameter was invalid.
EFI_ACCESS_DENIED	Access not permitted.
EFI_OUT_OF_RESOURCES	Out of resources.
EFI_UNSUPPORTED	Operation not supported.

Definition at line 120 of file EventHandle.c.

Variable Documentation

mMmConfig

EFI_MM_CONFIGURATION_PROTOCOL mMmConfig

Initial value:

= {
  0,
  MmFoundationEntryRegister
}

Definition at line 52 of file EventHandle.c.

mMmEntryPoint

STATIC EFI_MM_ENTRY_POINT mMmEntryPoint = NULL

Definition at line 57 of file EventHandle.c.

mMpInformationHobData

MP_INFORMATION_HOB_DATA* mMpInformationHobData

Definition at line 50 of file EventHandle.c.

mNsCommBuffer

EFI_MMRAM_DESCRIPTOR mNsCommBuffer

Definition at line 47 of file EventHandle.c.

mSCommBuffer

EFI_MMRAM_DESCRIPTOR mSCommBuffer

Definition at line 48 of file EventHandle.c.

PerCpuGuidedEventContext

EFI_MM_COMMUNICATE_HEADER** PerCpuGuidedEventContext = NULL

Definition at line 44 of file EventHandle.c.