mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-29 12:35:53 +01:00
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
|
/** @file
|
||
|
|
Public include file for the SMM CPU Platform Hook Library.
|
||
|
|
|
||
|
|
Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>
|
||
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
||
|
|
|
||
|
|
**/
|
||
|
|
|
||
|
|
#ifndef __SMM_CPU_PLATFORM_HOOK_LIB_H__
|
||
|
|
#define __SMM_CPU_PLATFORM_HOOK_LIB_H__
|
||
|
|
|
||
|
|
///
|
||
|
|
/// SMM Page Size Type
|
||
|
|
///
|
||
|
|
typedef enum {
|
||
|
|
SmmPageSize4K,
|
||
|
|
SmmPageSize2M,
|
||
|
|
SmmPageSize1G,
|
||
|
|
MaxSmmPageSizeType
|
||
|
|
} SMM_PAGE_SIZE_TYPE;
|
||
|
|
|
||
|
|
/**
|
||
|
|
Checks if platform produces a valid SMI.
|
||
|
|
|
||
|
|
This function checks if platform produces a valid SMI. This function is
|
||
|
|
called at SMM entry to detect if this is a spurious SMI. This function
|
||
|
|
must be implemented in an MP safe way because it is called by multiple CPU
|
||
|
|
threads.
|
||
|
|
|
||
|
|
@retval TRUE There is a valid SMI
|
||
|
|
@retval FALSE There is no valid SMI
|
||
|
|
|
||
|
|
**/
|
||
|
|
BOOLEAN
|
||
|
|
EFIAPI
|
||
|
|
PlatformValidSmi (
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Clears platform top level SMI status bit.
|
||
|
|
|
||
|
|
This function clears platform top level SMI status bit.
|
||
|
|
|
||
|
|
@retval TRUE The platform top level SMI status is cleared.
|
||
|
|
@retval FALSE The platform top level SMI status cannot be cleared.
|
||
|
|
|
||
|
|
**/
|
||
|
|
BOOLEAN
|
||
|
|
EFIAPI
|
||
|
|
ClearTopLevelSmiStatus (
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Performs platform specific way of SMM BSP election.
|
||
|
|
|
||
|
|
This function performs platform specific way of SMM BSP election.
|
||
|
|
|
||
|
|
@param IsBsp Output parameter. TRUE: the CPU this function executes
|
||
|
|
on is elected to be the SMM BSP. FALSE: the CPU this
|
||
|
|
function executes on is to be SMM AP.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The function executes successfully.
|
||
|
|
@retval EFI_NOT_READY The function does not determine whether this CPU should be
|
||
|
|
BSP or AP. This may occur if hardware init sequence to
|
||
|
|
enable the determination is yet to be done, or the function
|
||
|
|
chooses not to do BSP election and will let SMM CPU driver to
|
||
|
|
use its default BSP election process.
|
||
|
|
@retval EFI_DEVICE_ERROR The function cannot determine whether this CPU should be
|
||
|
|
BSP or AP due to hardware error.
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
PlatformSmmBspElection (
|
||
|
|
OUT BOOLEAN *IsBsp
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Get platform page table attribute .
|
||
|
|
|
||
|
|
This function gets page table attribute of platform.
|
||
|
|
|
||
|
|
@param Address Input parameter. Obtain the page table entries attribute on this address.
|
||
|
|
@param PageSize Output parameter. The size of the page.
|
||
|
|
@param NumOfPages Output parameter. Number of page.
|
||
|
|
@param PageAttribute Output parameter. Paging Attributes (WB, UC, etc).
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The platform page table attribute from the address is determined.
|
||
|
|
@retval EFI_UNSUPPORTED The platform does not support getting page table attribute for the address.
|
||
|
|
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
GetPlatformPageTableAttribute (
|
||
|
|
IN UINT64 Address,
|
||
|
|
OUT SMM_PAGE_SIZE_TYPE *PageSize,
|
||
|
|
OUT UINTN *NumOfPages,
|
||
|
|
OUT UINTN *PageAttribute
|
||
|
|
);
|
||
|
|
|
||
|
|
#endif
|