74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
/** @file
|
|
IA-32 processor specific functions to enable SMM profile.
|
|
|
|
Copyright (c) 2012 - 2016, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include "PiSmmCpuDxeSmm.h"
|
|
#include "SmmProfileInternal.h"
|
|
|
|
/**
|
|
Create SMM page table for S3 path.
|
|
|
|
**/
|
|
VOID
|
|
InitSmmS3Cr3 (
|
|
VOID
|
|
)
|
|
{
|
|
mSmmS3ResumeState->SmmS3Cr3 = Gen4GPageTable (TRUE);
|
|
|
|
return ;
|
|
}
|
|
|
|
/**
|
|
Allocate pages for creating 4KB-page based on 2MB-page when page fault happens.
|
|
32-bit firmware does not need it.
|
|
|
|
**/
|
|
VOID
|
|
InitPagesForPFHandler (
|
|
VOID
|
|
)
|
|
{
|
|
}
|
|
|
|
/**
|
|
Update page table to map the memory correctly in order to make the instruction
|
|
which caused page fault execute successfully. And it also save the original page
|
|
table to be restored in single-step exception. 32-bit firmware does not need it.
|
|
|
|
@param PageTable PageTable Address.
|
|
@param PFAddress The memory address which caused page fault exception.
|
|
@param CpuIndex The index of the processor.
|
|
@param ErrorCode The Error code of exception.
|
|
@param IsValidPFAddress The flag indicates if SMM profile data need be added.
|
|
|
|
**/
|
|
VOID
|
|
RestorePageTableAbove4G (
|
|
UINT64 *PageTable,
|
|
UINT64 PFAddress,
|
|
UINTN CpuIndex,
|
|
UINTN ErrorCode,
|
|
BOOLEAN *IsValidPFAddress
|
|
)
|
|
{
|
|
}
|
|
|
|
/**
|
|
Clear TF in FLAGS.
|
|
|
|
@param SystemContext A pointer to the processor context when
|
|
the interrupt occurred on the processor.
|
|
|
|
**/
|
|
VOID
|
|
ClearTrapFlag (
|
|
IN OUT EFI_SYSTEM_CONTEXT SystemContext
|
|
)
|
|
{
|
|
SystemContext.SystemContextIa32->Eflags &= (UINTN) ~BIT8;
|
|
}
|