You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
1.8 KiB
67 lines
1.8 KiB
/** @file
|
|
This library retrieve the EFI_BOOT_SERVICES pointer from EFI system table in
|
|
library's constructor.
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php.
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
|
|
#include <Uefi.h>
|
|
|
|
#include <Library/UefiBootServicesTableLib.h>
|
|
#include <Library/DebugLib.h>
|
|
|
|
EFI_HANDLE gImageHandle = NULL;
|
|
EFI_SYSTEM_TABLE *gST = NULL;
|
|
EFI_BOOT_SERVICES *gBS = NULL;
|
|
|
|
/**
|
|
The constructor function caches the pointer of Boot Services Table.
|
|
|
|
The constructor function caches the pointer of Boot Services Table through System Table.
|
|
It will ASSERT() if the pointer of System Table is NULL.
|
|
It will ASSERT() if the pointer of Boot Services Table is NULL.
|
|
It will always return EFI_SUCCESS.
|
|
|
|
@param ImageHandle The firmware allocated handle for the EFI image.
|
|
@param SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
UefiBootServicesTableLibConstructor (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
//
|
|
// Cache the Image Handle
|
|
//
|
|
gImageHandle = ImageHandle;
|
|
ASSERT (gImageHandle != NULL);
|
|
|
|
//
|
|
// Cache pointer to the EFI System Table
|
|
//
|
|
gST = SystemTable;
|
|
ASSERT (gST != NULL);
|
|
|
|
//
|
|
// Cache pointer to the EFI Boot Services Table
|
|
//
|
|
gBS = SystemTable->BootServices;
|
|
ASSERT (gBS != NULL);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|