diff options
Diffstat (limited to 'MdePkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c')
| -rw-r--r-- | MdePkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c | 46 |
1 files changed, 20 insertions, 26 deletions
diff --git a/MdePkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c b/MdePkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c index a22ad136941b..509832305d9a 100644 --- a/MdePkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c +++ b/MdePkg/Library/PeiServicesTablePointerLib/PeiServicesTablePointer.c @@ -1,17 +1,11 @@ /** @file PEI Services Table Pointer Library. - + This library is used for PEIM which does executed from flash device directly but executed in memory. - Copyright (c) 2006 - 2014, 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. + Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent **/ @@ -22,14 +16,14 @@ CONST EFI_PEI_SERVICES **gPeiServices; /** - 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. - + 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. + If PeiServicesTablePointer is NULL, then ASSERT(). - + @param PeiServicesTablePointer The address of PeiServices pointer. **/ VOID @@ -45,10 +39,10 @@ SetPeiServicesTablePointer ( /** 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 + 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. @@ -67,7 +61,7 @@ GetPeiServicesTablePointer ( /** The constructor function caches the pointer to PEI services. - + The constructor function caches the pointer to PEI services. It will always return EFI_SUCCESS. @@ -89,16 +83,16 @@ PeiServicesTablePointerLibConstructor ( } /** - Perform CPU specific actions required to migrate the PEI Services Table + Perform CPU specific actions required to migrate the PEI Services Table pointer from temporary RAM to permanent RAM. - For IA32 CPUs, the PEI Services Table pointer is stored in the 4 bytes + For IA32 CPUs, the PEI Services Table pointer is stored in the 4 bytes immediately preceding the Interrupt Descriptor Table (IDT) in memory. - For X64 CPUs, the PEI Services Table pointer is stored in the 8 bytes + For X64 CPUs, the PEI Services Table pointer is stored in the 8 bytes immediately preceding the Interrupt Descriptor Table (IDT) in memory. For Itanium and ARM CPUs, a the PEI Services Table Pointer is stored in - a dedicated CPU register. This means that there is no memory storage - associated with storing the PEI Services Table pointer, so no additional + a dedicated CPU register. This means that there is no memory storage + associated with storing the PEI Services Table pointer, so no additional migration actions are required for Itanium or ARM CPUs. **/ @@ -109,7 +103,7 @@ MigratePeiServicesTablePointer ( ) { // - // PEI Services Table pointer is cached in the global variable. No additional + // PEI Services Table pointer is cached in the global variable. No additional // migration actions are required. // return; |