mirror of https://github.com/acidanthera/audk.git
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/** @file
|
|
PEI Services Table Pointer Library implementation for IPF that uses Kernel
|
|
Register 7 to store the pointer.
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation.<BR>
|
|
All rights reserved. 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 <PiPei.h>
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/DebugLib.h>
|
|
|
|
/**
|
|
Retrieves the cached value of the PEI Services Table pointer.
|
|
|
|
Returns the cached value of the PEI Services Table pointer in a CPU specific manner
|
|
as specified in the CPU binding section of the Platform Initialization Pre-EFI
|
|
Initialization Core Interface Specification.
|
|
|
|
If the cached PEI Services Table pointer is NULL, then ASSERT().
|
|
|
|
@return The pointer to PeiServices.
|
|
|
|
**/
|
|
CONST EFI_PEI_SERVICES **
|
|
EFIAPI
|
|
GetPeiServicesTablePointer (
|
|
VOID
|
|
)
|
|
{
|
|
CONST EFI_PEI_SERVICES **PeiServices;
|
|
|
|
PeiServices = (CONST EFI_PEI_SERVICES **)(UINTN)AsmReadKr7 ();
|
|
ASSERT (PeiServices != NULL);
|
|
return PeiServices;
|
|
}
|
|
|
|
|
|
/**
|
|
Caches a pointer PEI Services Table.
|
|
|
|
Caches the pointer to the PEI Services Table specified by PeiServicesTablePointer
|
|
in a CPU specific manner as specified in the CPU binding section of the Platform Initialization
|
|
Pre-EFI Initialization Core Interface Specification.
|
|
The function set the pointer of PEI services in KR7 register
|
|
according to PI specification.
|
|
|
|
If PeiServicesTablePointer is NULL, then ASSERT().
|
|
|
|
@param PeiServicesTablePointer The address of PeiServices pointer.
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
SetPeiServicesTablePointer (
|
|
IN CONST EFI_PEI_SERVICES ** PeiServicesTablePointer
|
|
)
|
|
{
|
|
ASSERT (PeiServicesTablePointer != NULL);
|
|
AsmWriteKr7 ((UINT64)(UINTN)PeiServicesTablePointer);
|
|
}
|
|
|
|
|
|
|
|
|