#include <PiSmm.h>
#include <Library/SmmCpuFeaturesLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/SmmServicesTableLib.h>
#include <Library/DebugLib.h>
#include "PiSmmCpuCommon.h"

Data Structures
struct	PROCESSOR_SMM_DESCRIPTOR

Macros
#define	LMA BIT10

Functions
UINTN EFIAPI	GetSmiHandlerSize (VOID)

VOID EFIAPI	InstallSmiHandler (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)

Variables
CONST PROCESSOR_SMM_DESCRIPTOR	gcPsd

X86_ASSEMBLY_PATCH_LABEL	gPatchSmbase

X86_ASSEMBLY_PATCH_LABEL	gPatchSmiStack

X86_ASSEMBLY_PATCH_LABEL	gPatchSmiCr3

volatile UINT8	gcSmiHandlerTemplate []

CONST UINT16	gcSmiHandlerSize

IA32_DESCRIPTOR	gSmiHandlerIdtr

UINT8	mSmmSaveStateRegisterLma

Detailed Description

Provides services to access SMRAM Save State Map

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

Definition in file SmramSaveState.c.

Macro Definition Documentation

◆ LMA

#define LMA BIT10

Definition at line 51 of file SmramSaveState.c.

Function Documentation

◆ GetSmiHandlerSize()

UINTN EFIAPI GetSmiHandlerSize ( VOID )

Get the size of the SMI Handler in bytes.

Return values

The	size, in bytes, of the SMI Handler.

Definition at line 80 of file SmramSaveState.c.

◆ InstallSmiHandler()

VOID EFIAPI InstallSmiHandler	(	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 the SMI handler for the CPU specified by CpuIndex. This function 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 120 of file SmramSaveState.c.

Variable Documentation

◆ gPatchSmbase

X86_ASSEMBLY_PATCH_LABEL gPatchSmbase

Variables from SMI Handler

Definition at line 56 of file SmramSaveState.c.

◆ gPatchSmiCr3

X86_ASSEMBLY_PATCH_LABEL gPatchSmiCr3

Definition at line 58 of file SmramSaveState.c.

◆ gPatchSmiStack

X86_ASSEMBLY_PATCH_LABEL gPatchSmiStack

Definition at line 57 of file SmramSaveState.c.

◆ gSmiHandlerIdtr

IA32_DESCRIPTOR gSmiHandlerIdtr

Definition at line 65 of file SmramSaveState.c.

◆ mSmmSaveStateRegisterLma

UINT8 mSmmSaveStateRegisterLma

The mode of the CPU at the time an SMI occurs

Definition at line 70 of file SmramSaveState.c.

Data Structures

Macros

Functions

Variables