SmmCpuFeaturesLibNoStm.c File Reference

#include <PiMm.h>
#include <Library/SmmCpuFeaturesLib.h>
#include "CpuFeaturesLib.h"

Go to the source code of this file.

Functions
VOID	FinishSmmCpuFeaturesInitializeProcessor (VOID)
UINTN EFIAPI	SmmCpuFeaturesGetSmiHandlerSize (VOID)
VOID EFIAPI	SmmCpuFeaturesInstallSmiHandler (IN UINTN CpuIndex, IN UINT32 SmBase, IN VOID *SmiStack, IN UINTN StackSize, IN UINTN GdtBase, IN UINTN GdtSize, IN UINTN IdtBase, IN UINTN IdtSize, IN UINT32 Cr3)

Detailed Description

The CPU specific programming for PiSmmCpuDxeSmm module when STM support is not included.

Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file SmmCpuFeaturesLibNoStm.c.

Function Documentation

FinishSmmCpuFeaturesInitializeProcessor()

VOID FinishSmmCpuFeaturesInitializeProcessor

(

VOID

)

Internal worker function that is called to complete CPU initialization at the end of SmmCpuFeaturesInitializeProcessor().

Definition at line 20 of file SmmCpuFeaturesLibNoStm.c.

SmmCpuFeaturesGetSmiHandlerSize()

UINTN EFIAPI SmmCpuFeaturesGetSmiHandlerSize

(

VOID

)

Return the size, in bytes, of a custom SMI Handler in bytes. If 0 is returned, then a custom SMI handler is not provided by this library, and the default SMI handler must be used.

Return values

0	Use the default SMI handler.
>	0 Use the SMI handler installed by SmmCpuFeaturesInstallSmiHandler() The caller is required to allocate enough SMRAM for each CPU to support the size of the custom SMI handler.

Definition at line 38 of file SmmCpuFeaturesLibNoStm.c.

SmmCpuFeaturesInstallSmiHandler()

VOID EFIAPI SmmCpuFeaturesInstallSmiHandler	(	IN UINTN	CpuIndex,
		IN UINT32	SmBase,
		IN VOID *	SmiStack,
		IN UINTN	StackSize,
		IN UINTN	GdtBase,
		IN UINTN	GdtSize,
		IN UINTN	IdtBase,
		IN UINTN	IdtSize,
		IN UINT32	Cr3
	)

Install a custom SMI handler for the CPU specified by CpuIndex. This function is only called if SmmCpuFeaturesGetSmiHandlerSize() returns a size is greater than zero and is called by the CPU that was elected as monarch during System Management Mode initialization.

Parameters

[in]	CpuIndex	The index of the CPU to install the custom SMI handler. The value must be between 0 and the NumberOfCpus field in the System Management System Table (SMST).
[in]	SmBase	The SMBASE address for the CPU specified by CpuIndex.
[in]	SmiStack	The stack to use when an SMI is processed by the the CPU specified by CpuIndex.
[in]	StackSize	The size, in bytes, if the stack used when an SMI is processed by the CPU specified by CpuIndex.
[in]	GdtBase	The base address of the GDT to use when an SMI is processed by the CPU specified by CpuIndex.
[in]	GdtSize	The size, in bytes, of the GDT used when an SMI is processed by the CPU specified by CpuIndex.
[in]	IdtBase	The base address of the IDT to use when an SMI is processed by the CPU specified by CpuIndex.
[in]	IdtSize	The size, in bytes, of the IDT used when an SMI is processed by the CPU specified by CpuIndex.
[in]	Cr3	The base address of the page tables to use when an SMI is processed by the CPU specified by CpuIndex.

Definition at line 72 of file SmmCpuFeaturesLibNoStm.c.