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Fix function comment to follows doxygen format. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5499 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
klu2 2008-07-16 09:40:06 +00:00
parent e94358a3fe
commit b1f6a7c636
14 changed files with 1213 additions and 1964 deletions
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80
MdeModulePkg/Core/Pei/BootMode/BootMode.c
View File

@ -1,6 +1,11 @@
/** @file
Copyright (c) 2006, Intel Corporation
This module provide function for ascertaining and updating the boot mode:
GetBootMode()
SetBootMode()
See PI Speicifcation volume I, chapter 9 Boot Paths for addtional information
on the boot mode.
Copyright (c) 2006 - 2008, Intel Corporation
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
@ -9,47 +14,28 @@ 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.
Module Name:
BootMode.c
Abstract:
EFI PEI Core Boot Mode services
Revision History
**/
#include <PeiMain.h>
/**
This service enables PEIMs to ascertain the present value of the boot mode.
@param PeiServices The PEI core services table.
@param BootMode A pointer to contain the value of the boot mode.
@retval EFI_SUCCESS The boot mode was returned successfully.
@retval EFI_INVALID_PARAMETER BootMode is NULL.
**/
EFI_STATUS
EFIAPI
PeiGetBootMode (
IN CONST EFI_PEI_SERVICES **PeiServices,
OUT EFI_BOOT_MODE *BootMode
IN CONST EFI_PEI_SERVICES **PeiServices,
OUT EFI_BOOT_MODE *BootMode
)
/*++
Routine Description:
This service enables PEIMs to ascertain the present value of the boot mode.
Arguments:
PeiServices - The PEI core services table.
BootMode - A pointer to contain the value of the boot mode.
Returns:
EFI_SUCCESS - The boot mode was returned successfully.
EFI_INVALID_PARAMETER - BootMode is NULL.
--*/
{
PEI_CORE_INSTANCE *PrivateData;
PEI_CORE_INSTANCE *PrivateData;
EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;
@ -68,28 +54,22 @@ Returns:
}
/**
This service enables PEIMs to update the boot mode variable.
@param PeiServices - The PEI core services table.
@param BootMode - The value of the boot mode to set.
@return EFI_SUCCESS - The value was successfully updated
**/
EFI_STATUS
EFIAPI
PeiSetBootMode (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_BOOT_MODE BootMode
)
/*++
Routine Description:
This service enables PEIMs to update the boot mode variable.
Arguments:
PeiServices - The PEI core services table.
BootMode - The value of the boot mode to set.
Returns:
EFI_SUCCESS - The value was successfully updated
--*/
{
PEI_CORE_INSTANCE *PrivateData;
EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;

80
MdeModulePkg/Core/Pei/Dependency/dependency.c
View File

@ -1,4 +1,9 @@
/** @file
PEI Dispatcher Dependency Evaluator
This routine evaluates a dependency expression (DEPENDENCY_EXPRESSION) to determine
if a driver can be scheduled for execution. The criteria for
schedulability is that the dependency expression is satisfied.
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
@ -9,47 +14,30 @@ 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.
Module Name:
dependency.c
Abstract:
PEI Dispatcher Dependency Evaluator
This routine evaluates a dependency expression (DEPENDENCY_EXPRESSION) to determine
if a driver can be scheduled for execution. The criteria for
schedulability is that the dependency expression is satisfied.
**/
#include <PeiMain.h>
#include "dependency.h"
STATIC
BOOLEAN
IsPpiInstalled (
IN EFI_PEI_SERVICES **PeiServices,
IN EVAL_STACK_ENTRY *Stack
)
/*++
Routine Description:
/**
This routine determines if a PPI has been installed.
The truth value of a GUID is determined by if the PPI has
been published and can be queried from the PPI database.
Arguments:
PeiServices - The PEI core services table.
Stack - Reference to EVAL_STACK_ENTRY that contains PPI GUID to check
Returns:
@param PeiServices The PEI core services table.
@param Stack Reference to EVAL_STACK_ENTRY that contains PPI GUID to check
True if the PPI is already installed.
False if the PPI has yet to be installed.
@retval TRUE if the PPI is already installed.
@retval FALSE if the PPI has yet to be installed.
--*/
**/
BOOLEAN
IsPpiInstalled (
IN EFI_PEI_SERVICES **PeiServices,
IN EVAL_STACK_ENTRY *Stack
)
{
VOID *PeiInstance;
EFI_STATUS Status;
@ -86,15 +74,7 @@ Returns:
return TRUE;
}
BOOLEAN
PeimDispatchReadiness (
IN EFI_PEI_SERVICES **PeiServices,
IN VOID *DependencyExpression
)
/*++
Routine Description:
/**
This is the POSTFIX version of the dependency evaluator. When a
PUSH [PPI GUID] is encountered, a pointer to the GUID is stored on
@ -103,22 +83,22 @@ Routine Description:
some time savings as not all PPIs must be checked for certain
operation types (AND, OR).
Arguments:
PeiServices - Calling context.
@param PeiServices Calling context.
@param DependencyExpression Pointer to a dependency expression. The Grammar adheres to
the BNF described above and is stored in postfix notation.
DependencyExpression - Pointer to a dependency expression. The Grammar adheres to
the BNF described above and is stored in postfix notation.
Returns:
@retval TRUE if it is a well-formed Grammar
@retval FALSE if the dependency expression overflows the evaluation stack
if the dependency expression underflows the evaluation stack
if the dependency expression is not a well-formed Grammar.
Status = EFI_SUCCESS if it is a well-formed Grammar
EFI_INVALID_PARAMETER if the dependency expression overflows
the evaluation stack
EFI_INVALID_PARAMETER if the dependency expression underflows
the evaluation stack
EFI_INVALID_PARAMETER if the dependency expression is not a
well-formed Grammar.
--*/
**/
BOOLEAN
PeimDispatchReadiness (
IN EFI_PEI_SERVICES **PeiServices,
IN VOID *DependencyExpression
)
{
DEPENDENCY_EXPRESSION_OPERAND *Iterator;
EVAL_STACK_ENTRY *StackPtr;

15
MdeModulePkg/Core/Pei/Dependency/dependency.h
View File

@ -1,6 +1,8 @@
/** @file
Copyright (c) 2006, Intel Corporation
This module contains data specific to dependency expressions
and local function prototypes.
Copyright (c) 2006 - 2008, Intel Corporation
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
@ -9,15 +11,6 @@ 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.
Module Name:
dependency.h
Abstract:
This module contains data specific to dependency expressions
and local function prototypes.
**/
#ifndef _PEI_DEPENDENCY_H_

164
MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
View File

@ -1,5 +1,6 @@
/** @file
EFI PEI Core dispatch services
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -9,23 +10,13 @@ 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.
Module Name:
Dispatcher.c
Abstract:
EFI PEI Core dispatch services
Revision History
**/
#include <PeiMain.h>
//
//CAR is filled with this initial value during SEC phase
//
///
/// CAR is filled with this initial value during SEC phase
///
#define INIT_CAR_VALUE 0x5AA55AA5
typedef struct {
@ -33,27 +24,21 @@ typedef struct {
EFI_HANDLE Handle;
} PEIM_FILE_HANDLE_EXTENDED_DATA;
/**
Discover all Peims and optional Apriori file in one FV. There is at most one
Apriori file in one FV.
@param Private - Pointer to the private data passed in from caller
@param VolumeHandle - Fv handle.
**/
VOID
DiscoverPeimsAndOrderWithApriori (
IN PEI_CORE_INSTANCE *Private,
IN EFI_PEI_FV_HANDLE VolumeHandle
)
/*++
Routine Description:
Discover all Peims and optional Apriori file in one FV. There is at most one
Apriori file in one FV.
Arguments:
Private - Pointer to the private data passed in from caller
VolumeHandle - Fv handle.
Returns:
NONE
--*/
{
EFI_STATUS Status;
EFI_PEI_FV_HANDLE FileHandle;
@ -187,6 +172,13 @@ Returns:
}
/**
Shadow PeiCore module from flash to installed memory.
@param PeiServices Pointer to PeiService table
@param PrivateInMem PeiCore's private data structure
**/
VOID*
ShadowPeiCore(
EFI_PEI_SERVICES **PeiServices,
@ -226,32 +218,23 @@ ShadowPeiCore(
return (VOID*) ((UINTN) EntryPoint + (UINTN) PeiCore - (UINTN) _ModuleEntryPoint);
}
/**
Conduct PEIM dispatch.
@param SecCoreData Points to a data structure containing information about the PEI core's operating
environment, such as the size and location of temporary RAM, the stack location and
the BFV location.
@param Private Pointer to the private data passed in from caller
@retval EFI_SUCCESS - Successfully dispatched PEIM.
@retval EFI_NOT_FOUND - The dispatch failed.
**/
VOID
PeiDispatcher (
IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,
IN PEI_CORE_INSTANCE *Private
)
/*++
Routine Description:
Conduct PEIM dispatch.
Arguments:
SecCoreData - Points to a data structure containing information about the PEI core's operating
environment, such as the size and location of temporary RAM, the stack location and
the BFV location.
PrivateData - Pointer to the private data passed in from caller
DispatchData - Pointer to PEI_CORE_DISPATCH_DATA data.
Returns:
EFI_SUCCESS - Successfully dispatched PEIM.
EFI_NOT_FOUND - The dispatch failed.
--*/
{
EFI_STATUS Status;
UINT32 Index1;
@ -674,32 +657,25 @@ Returns:
}
/**
Initialize the Dispatcher's data members
@param PrivateData PeiCore's private data structure
@param OldCoreData Old data from SecCore
NULL if being run in non-permament memory mode.
@param SecCoreData Points to a data structure containing information about the PEI core's operating
environment, such as the size and location of temporary RAM, the stack location and
the BFV location.
@return None.
**/
VOID
InitializeDispatcherData (
IN PEI_CORE_INSTANCE *PrivateData,
IN PEI_CORE_INSTANCE *OldCoreData,
IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData
)
/*++
Routine Description:
Initialize the Dispatcher's data members
Arguments:
PeiServices - The PEI core services table.
OldCoreData - Pointer to old core data (before switching stack).
NULL if being run in non-permament memory mode.
SecCoreData - Points to a data structure containing information about the PEI core's operating
environment, such as the size and location of temporary RAM, the stack location and
the BFV location.
Returns:
None.
--*/
{
if (OldCoreData == NULL) {
PeiInitializeFv (PrivateData, SecCoreData);
@ -708,29 +684,25 @@ Returns:
return;
}
/**
This routine parses the Dependency Expression, if available, and
decides if the module can be executed.
@param Private PeiCore's private data structure
@param FileHandle PEIM's file handle
@param PeimCount Peim count in all dispatched PEIMs.
@retval TRUE Can be dispatched
@retval FALSE Cannot be dispatched
**/
BOOLEAN
DepexSatisfied (
IN PEI_CORE_INSTANCE *Private,
IN EFI_PEI_FILE_HANDLE FileHandle,
IN UINTN PeimCount
)
/*++
Routine Description:
This routine parses the Dependency Expression, if available, and
decides if the module can be executed.
Arguments:
PeiServices - The PEI Service Table
CurrentPeimAddress - Address of the PEIM Firmware File under investigation
Returns:
TRUE - Can be dispatched
FALSE - Cannot be dispatched
--*/
{
EFI_STATUS Status;
VOID *DepexData;
@ -768,11 +740,11 @@ Returns:
This routine enable a PEIM to register itself to shadow when PEI Foundation
discovery permanent memory.
@param FileHandle File handle of a PEIM.
@param FileHandle File handle of a PEIM.
@retval EFI_NOT_FOUND The file handle doesn't point to PEIM itself.
@retval EFI_ALREADY_STARTED Indicate that the PEIM has been registered itself.
@retval EFI_SUCCESS Successfully to register itself.
@retval EFI_NOT_FOUND The file handle doesn't point to PEIM itself.
@retval EFI_ALREADY_STARTED Indicate that the PEIM has been registered itself.
@retval EFI_SUCCESS Successfully to register itself.
**/
EFI_STATUS
@ -803,18 +775,16 @@ PeiRegisterForShadow (
return EFI_SUCCESS;
}
/**
Get Fv image from the FV type file, then install FV INFO ppi, Build FV hob.
@param PeiServices Pointer to the PEI Core Services Table.
@param FileHandle File handle of a Fv type file.
@param PeiServices Pointer to the PEI Core Services Table.
@param FvFileHandle File handle of a Fv type file.
@param AuthenticationState Pointer to attestation authentication state of image.
@retval EFI_NOT_FOUND FV image can't be found.
@retval EFI_SUCCESS Successfully to process it.
@retval EFI_NOT_FOUND FV image can't be found.
@retval EFI_SUCCESS Successfully to process it.
**/
EFI_STATUS

398
MdeModulePkg/Core/Pei/FwVol/FwVol.c
View File

@ -1,5 +1,6 @@
/** @file
Pei Core Firmware File System service routines.
Copyright (c) 2006 - 2007, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -15,7 +16,7 @@ Module Name:
Abstract:
Pei Core Firmware File System service routines.
**/
@ -31,28 +32,22 @@ STATIC EFI_PEI_NOTIFY_DESCRIPTOR mNotifyOnFvInfoList = {
#define GET_OCCUPIED_SIZE(ActualSize, Alignment) \
(ActualSize) + (((Alignment) - ((ActualSize) & ((Alignment) - 1))) & ((Alignment) - 1))
STATIC
/**
Returns the highest bit set of the State field
@param ErasePolarity Erase Polarity as defined by EFI_FVB2_ERASE_POLARITY
in the Attributes field.
@param FfsHeader Pointer to FFS File Header.
@return Returns the highest bit in the State field
**/
EFI_FFS_FILE_STATE
GetFileState(
IN UINT8 ErasePolarity,
IN EFI_FFS_FILE_HEADER *FfsHeader
)
/*++
Routine Description:
Returns the highest bit set of the State field
Arguments:
ErasePolarity - Erase Polarity as defined by EFI_FVB2_ERASE_POLARITY
in the Attributes field.
FfsHeader - Pointer to FFS File Header.
Returns:
Returns the highest bit in the State field
--*/
{
EFI_FFS_FILE_STATE FileState;
EFI_FFS_FILE_STATE HighestBit;
@ -71,48 +66,37 @@ Returns:
return HighestBit;
}
STATIC
/**
Calculates the checksum of the header of a file.
@param FileHeader Pointer to FFS File Header.
@return Checksum of the header.
The header is zero byte checksum.
Zero means the header is good.
Non-zero means the header is bad.
**/
UINT8
CalculateHeaderChecksum (
IN EFI_FFS_FILE_HEADER *FileHeader
)
/*++
Routine Description:
Calculates the checksum of the header of a file.
Arguments:
FileHeader - Pointer to FFS File Header.
Returns:
Checksum of the header.
The header is zero byte checksum.
- Zero means the header is good.
- Non-zero means the header is bad.
Bugbug: For PEI performance reason, we comments this code at this time.
--*/
{
UINT8 *ptr;
UINT8 *Ptr;
UINTN Index;
UINT8 Sum;
Sum = 0;
ptr = (UINT8 *)FileHeader;
Ptr = (UINT8 *)FileHeader;
for (Index = 0; Index < sizeof(EFI_FFS_FILE_HEADER) - 3; Index += 4) {
Sum = (UINT8)(Sum + ptr[Index]);
Sum = (UINT8)(Sum + ptr[Index+1]);
Sum = (UINT8)(Sum + ptr[Index+2]);
Sum = (UINT8)(Sum + ptr[Index+3]);
Sum = (UINT8)(Sum + Ptr[Index]);
Sum = (UINT8)(Sum + Ptr[Index+1]);
Sum = (UINT8)(Sum + Ptr[Index+2]);
Sum = (UINT8)(Sum + Ptr[Index+3]);
}
for (; Index < sizeof(EFI_FFS_FILE_HEADER); Index++) {
Sum = (UINT8)(Sum + ptr[Index]);
Sum = (UINT8)(Sum + Ptr[Index]);
}
//
@ -127,7 +111,15 @@ Bugbug: For PEI performance reason, we comments this code at this time.
return Sum;
}
STATIC
/**
Find FV handler according some FileHandle in that FV.
@param FileHandle Handle of file image
@param VolumeHandle Handle of FV
@return EDES_TODO: Add description for return value
**/
BOOLEAN
EFIAPI
PeiFileHandleToVolume (
@ -151,7 +143,23 @@ PeiFileHandleToVolume (
return FALSE;
}
/**
Given the input file pointer, search for the next matching file in the
FFS volume as defined by SearchType. The search starts from FileHeader inside
the Firmware Volume defined by FwVolHeader.
@param FvHandle Pointer to the FV header of the volume to search
@param FileName File name
@param SearchType Filter to find only files of this type.
Type EFI_FV_FILETYPE_ALL causes no filtering to be done.
@param FileHandle This parameter must point to a valid FFS volume.
@param AprioriFile Pointer to AprioriFile image in this FV if has
@return EFI_NOT_FOUND No files matching the search criteria were found
@retval EFI_SUCCESS Success to search given file
**/
EFI_STATUS
PeiFindFileEx (
IN CONST EFI_PEI_FV_HANDLE FvHandle,
@ -160,28 +168,6 @@ PeiFindFileEx (
IN OUT EFI_PEI_FILE_HANDLE *FileHandle,
IN OUT EFI_PEI_FV_HANDLE *AprioriFile OPTIONAL
)
/*++
Routine Description:
Given the input file pointer, search for the next matching file in the
FFS volume as defined by SearchType. The search starts from FileHeader inside
the Firmware Volume defined by FwVolHeader.
Arguments:
PeiServices - Pointer to the PEI Core Services Table.
SearchType - Filter to find only files of this type.
Type EFI_FV_FILETYPE_ALL causes no filtering to be done.
FwVolHeader - Pointer to the FV header of the volume to search.
This parameter must point to a valid FFS volume.
FileHeader - Pointer to the current file from which to begin searching.
This pointer will be updated upon return to reflect the file found.
Flag - Indicator for if this is for PEI Dispath search
Returns:
EFI_NOT_FOUND - No files matching the search criteria were found
EFI_SUCCESS
--*/
{
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
EFI_FFS_FILE_HEADER **FileHeader;
@ -297,25 +283,22 @@ Returns:
return EFI_NOT_FOUND;
}
/**
Initialize PeiCore Fv List.
@param PrivateData - Pointer to PEI_CORE_INSTANCE.
@param SecCoreData - Pointer to EFI_SEC_PEI_HAND_OFF.
@return NONE
**/
VOID
PeiInitializeFv (
IN PEI_CORE_INSTANCE *PrivateData,
IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData
)
/*++
Routine Description:
Initialize PeiCore Fv List.
Arguments:
PrivateData - Pointer to PEI_CORE_INSTANCE.
SecCoreData - Pointer to EFI_SEC_PEI_HAND_OFF.
Returns:
NONE
--*/
{
EFI_STATUS Status;
//
@ -340,6 +323,17 @@ Returns:
}
/**
Process Firmware Volum Information once FvInfoPPI install.
@param PeiServices - General purpose services available to every PEIM.
@param NotifyDescriptor EDES_TODO: Add parameter description
@param Ppi EDES_TODO: Add parameter description
@retval EFI_SUCCESS if the interface could be successfully installed
**/
EFI_STATUS
EFIAPI
FirmwareVolmeInfoPpiNotifyCallback (
@ -347,22 +341,6 @@ FirmwareVolmeInfoPpiNotifyCallback (
IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
IN VOID *Ppi
)
/*++
Routine Description:
Process Firmware Volum Information once FvInfoPPI install.
Arguments:
PeiServices - General purpose services available to every PEIM.
Returns:
Status - EFI_SUCCESS if the interface could be successfully
installed
--*/
{
UINT8 FvCount;
EFI_PEI_FIRMWARE_VOLUME_INFO_PPI *Fv;
@ -434,6 +412,22 @@ Returns:
return EFI_SUCCESS;
}
/**
Go through the file to search SectionType section,
when meeting an encapsuled section.
@param PeiServices - General purpose services available to every PEIM.
SearchType - Filter to find only section of this type.
@param SectionType EDES_TODO: Add parameter description
@param Section - From where to search.
@param SectionSize - The file size to search.
@param OutputBuffer - Pointer to the section to search.
@return EFI_STATUS
**/
EFI_STATUS
PeiFfsProcessSection (
IN CONST EFI_PEI_SERVICES **PeiServices,
@ -442,24 +436,6 @@ PeiFfsProcessSection (
IN UINTN SectionSize,
OUT VOID **OutputBuffer
)
/*++
Routine Description:
Go through the file to search SectionType section,
when meeting an encapsuled section.
Arguments:
PeiServices - General purpose services available to every PEIM.
SearchType - Filter to find only section of this type.
Section - From where to search.
SectionSize - The file size to search.
OutputBuffer - Pointer to the section to search.
Returns:
EFI_STATUS
--*/
{
EFI_STATUS Status;
UINT32 SectionLength;
@ -571,6 +547,21 @@ Returns:
}
/**
Given the input file pointer, search for the next matching section in the
FFS volume.
@param PeiServices Pointer to the PEI Core Services Table.
@param SectionType Filter to find only sections of this type.
@param FileHandle Pointer to the current file to search.
@param SectionData Pointer to the Section matching SectionType in FfsFileHeader.
NULL if section not found
@retval EFI_NOT_FOUND No files matching the search criteria were found
@retval EFI_SUCCESS Success to find section data in given file
**/
EFI_STATUS
EFIAPI
PeiFfsFindSectionData (
@ -579,24 +570,6 @@ PeiFfsFindSectionData (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN OUT VOID **SectionData
)
/*++
Routine Description:
Given the input file pointer, search for the next matching section in the
FFS volume.
Arguments:
PeiServices - Pointer to the PEI Core Services Table.
SearchType - Filter to find only sections of this type.
FfsFileHeader - Pointer to the current file to search.
SectionData - Pointer to the Section matching SectionType in FfsFileHeader.
- NULL if section not found
Returns:
EFI_NOT_FOUND - No files matching the search criteria were found
EFI_SUCCESS
--*/
{
EFI_FFS_FILE_HEADER *FfsFileHeader;
UINT32 FileSize;
@ -622,7 +595,22 @@ Returns:
);
}
/**
Given the input file pointer, search for the next matching file in the
FFS volume as defined by SearchType. The search starts from FileHeader inside
the Firmware Volume defined by FwVolHeader.
@param PeiServices Pointer to the PEI Core Services Table.
@param SearchType Filter to find only files of this type.
Type EFI_FV_FILETYPE_ALL causes no filtering to be done.
@param VolumeHandle Pointer to the FV header of the volume to search.
@param FileHandle Pointer to the current file from which to begin searching.
This pointer will be updated upon return to reflect the file found.
@retval EFI_NOT_FOUND No files matching the search criteria were found
@retval EFI_SUCCESS Success to find next file in given volume
**/
EFI_STATUS
EFIAPI
PeiFfsFindNextFile (
@ -631,35 +619,22 @@ PeiFfsFindNextFile (
IN EFI_PEI_FV_HANDLE VolumeHandle,
IN OUT EFI_PEI_FILE_HANDLE *FileHandle
)
/*++
Routine Description:
Given the input file pointer, search for the next matching file in the
FFS volume as defined by SearchType. The search starts from FileHeader inside
the Firmware Volume defined by FwVolHeader.
Arguments:
PeiServices - Pointer to the PEI Core Services Table.
SearchType - Filter to find only files of this type.
Type EFI_FV_FILETYPE_ALL causes no filtering to be done.
FwVolHeader - Pointer to the FV header of the volume to search.
This parameter must point to a valid FFS volume.
FileHeader - Pointer to the current file from which to begin searching.
This pointer will be updated upon return to reflect the file found.
Returns:
EFI_NOT_FOUND - No files matching the search criteria were found
EFI_SUCCESS
--*/
{
return PeiFindFileEx (VolumeHandle, NULL, SearchType, FileHandle, NULL);
}
/**
search the firmware volumes by index
@param PeiServices The PEI core services table.
@param Instance Instance of FV to find
@param VolumeHandle Pointer to found Volume.
@retval EFI_INVALID_PARAMETER FwVolHeader is NULL
@retval EFI_SUCCESS Firmware volume instance successfully found.
**/
EFI_STATUS
EFIAPI
PeiFvFindNextVolume (
@ -667,30 +642,6 @@ PeiFvFindNextVolume (
IN UINTN Instance,
IN OUT EFI_PEI_FV_HANDLE *VolumeHandle
)
/*++
Routine Description:
Return the firmware volumes.
BugBug -- Move this to the location of this code to where the
other FV and FFS support code lives.
Also, update to use FindFV for instances #'s >= 1.
Arguments:
PeiServices - The PEI core services table.
Instance - Instance of FV to find
FwVolHeader - Pointer to contain the data to return
Returns:
Pointer to the Firmware Volume instance requested
EFI_INVALID_PARAMETER - FwVolHeader is NULL
EFI_SUCCESS - Firmware volume instance successfully found.
--*/
{
PEI_CORE_INSTANCE *Private;
@ -709,6 +660,19 @@ Returns:
}
/**
Given the input VolumeHandle, search for the next matching name file.
@param FileName - File name to search.
@param VolumeHandle - The current FV to search.
@param FileHandle - Pointer to the file matching name in VolumeHandle.
- NULL if file not found
@return EFI_STATUS
**/
EFI_STATUS
EFIAPI
PeiFfsFindFileByName (
@ -716,22 +680,6 @@ PeiFfsFindFileByName (
IN EFI_PEI_FV_HANDLE VolumeHandle,
OUT EFI_PEI_FILE_HANDLE *FileHandle
)
/*++
Routine Description:
Given the input VolumeHandle, search for the next matching name file.
Arguments:
FileName - File name to search.
VolumeHandle - The current FV to search.
FileHandle - Pointer to the file matching name in VolumeHandle.
- NULL if file not found
Returns:
EFI_STATUS
--*/
{
EFI_STATUS Status;
if ((VolumeHandle == NULL) || (FileName == NULL) || (FileHandle == NULL)) {
@ -744,26 +692,24 @@ Returns:
return Status;
}
/**
Returns information about a specific file.
@param FileHandle - The handle to file.
@param FileInfo - Pointer to the file information.
@retval EFI_INVALID_PARAMETER Invalid FileHandle or FileInfo.
@retval EFI_SUCCESS Success to collect file info.
**/
EFI_STATUS
EFIAPI
PeiFfsGetFileInfo (
IN EFI_PEI_FILE_HANDLE FileHandle,
OUT EFI_FV_FILE_INFO *FileInfo
)
/*++
Routine Description:
Collect information of given file.
Arguments:
FileHandle - The handle to file.
FileInfo - Pointer to the file information.
Returns:
EFI_STATUS
--*/
{
UINT8 FileState;
UINT8 ErasePolarity;
@ -811,26 +757,22 @@ Returns:
}
/**
Collect information of given Fv Volume.
@param VolumeHandle - The handle to Fv Volume.
@param VolumeInfo - The pointer to volume information.
@retval EFI_INVALID_PARAMETER VolumeInfo is NULL
@retval EFI_SUCCESS Success to collect fv info.
**/
EFI_STATUS
EFIAPI
PeiFfsGetVolumeInfo (
IN EFI_PEI_FV_HANDLE VolumeHandle,
OUT EFI_FV_INFO *VolumeInfo
)
/*++
Routine Description:
Collect information of given Fv Volume.
Arguments:
VolumeHandle - The handle to Fv Volume.
VolumeInfo - The pointer to volume information.
Returns:
EFI_STATUS
--*/
{
EFI_FIRMWARE_VOLUME_HEADER FwVolHeader;
EFI_FIRMWARE_VOLUME_EXT_HEADER *FwVolExHeaderInfo;

105
MdeModulePkg/Core/Pei/Hob/Hob.c
View File

@ -1,5 +1,6 @@
/** @file
This module provide Hand-Off Block manupulation.
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -9,42 +10,29 @@ 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.
Module Name:
Hob.c
Abstract:
EFI PEI Core HOB services
**/
#include <PeiMain.h>
/**
Gets the pointer to the HOB List.
@param PeiServices The PEI core services table.
@param HobList Pointer to the HOB List.
@retval EFI_SUCCESS Get the pointer of HOB List
@retval EFI_NOT_AVAILABLE_YET the HOB List is not yet published
@retval EFI_INVALID_PARAMETER HobList is NULL (in debug mode)
**/
EFI_STATUS
EFIAPI
PeiGetHobList (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN OUT VOID **HobList
)
/*++
Routine Description:
Gets the pointer to the HOB List.
Arguments:
PeiServices - The PEI core services table.
HobList - Pointer to the HOB List.
Returns:
EFI_SUCCESS - Get the pointer of HOB List
EFI_NOT_AVAILABLE_YET - the HOB List is not yet published
EFI_INVALID_PARAMETER - HobList is NULL (in debug mode)
--*/
{
PEI_CORE_INSTANCE *PrivateData;
@ -68,6 +56,20 @@ Returns:
}
/**
Add a new HOB to the HOB List.
@param PeiServices - The PEI core services table.
@param Type - Type of the new HOB.
@param Length - Length of the new HOB to allocate.
@param Hob - Pointer to the new HOB.
@return EFI_SUCCESS Success to create hob.
@retval EFI_INVALID_PARAMETER if Hob is NULL
@retval EFI_NOT_AVAILABLE_YET if HobList is still not available.
@retval EFI_OUT_OF_RESOURCES if there is no more memory to grow the Hoblist.
**/
EFI_STATUS
EFIAPI
PeiCreateHob (
@ -76,27 +78,6 @@ PeiCreateHob (
IN UINT16 Length,
IN OUT VOID **Hob
)
/*++
Routine Description:
Add a new HOB to the HOB List.
Arguments:
PeiServices - The PEI core services table.
Type - Type of the new HOB.
Length - Length of the new HOB to allocate.
Hob - Pointer to the new HOB.
Returns:
Status - EFI_SUCCESS
- EFI_INVALID_PARAMETER if Hob is NULL
- EFI_NOT_AVAILABLE_YET if HobList is still not available.
- EFI_OUT_OF_RESOURCES if there is no more memory to grow the Hoblist.
--*/
{
EFI_STATUS Status;
EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;
@ -142,29 +123,23 @@ Returns:
}
/**
Builds a Handoff Information Table HOB
@param BootMode - Current Bootmode
@param MemoryBegin - Start Memory Address.
@param MemoryLength - Length of Memory.
@return EFI_SUCCESS Always success to initialize HOB.
**/
EFI_STATUS
PeiCoreBuildHobHandoffInfoTable (
IN EFI_BOOT_MODE BootMode,
IN EFI_PHYSICAL_ADDRESS MemoryBegin,
IN UINT64 MemoryLength
)
/*++
Routine Description:
Builds a Handoff Information Table HOB
Arguments:
BootMode - Current Bootmode
MemoryBegin - Start Memory Address.
MemoryLength - Length of Memory.
Returns:
EFI_SUCCESS
--*/
{
EFI_HOB_HANDOFF_INFO_TABLE *Hob;
EFI_HOB_GENERIC_HEADER *HobEnd;

321
MdeModulePkg/Core/Pei/Image/Image.c
View File

@ -1,5 +1,6 @@
/** @file
Pei Core Load Image Support
Copyright (c) 2006 - 2007, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -9,37 +10,25 @@ 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.
Module Name:
Image.c
Abstract:
Pei Core Load Image Support
**/
#include <PeiMain.h>
/*++
/**
Routine for loading file image.
Routine Description:
@param PeiServices The PEI core services table.
@param FileHandle Pointer to the FFS file header of the image.
@param ImageAddressArg Pointer to PE/TE image.
@param ImageSizeArg Size of PE/TE image.
@param EntryPoint Pointer to entry point of specified image file for output.
@param AuthenticationState - Pointer to attestation authentication state of image.
Support routine for the PE/COFF Loader that reads a buffer from a PE/COFF file
Arguments:
FileHandle - The handle to the PE/COFF file
FileOffset - The offset, in bytes, into the file to read
ReadSize - The number of bytes to read from the file starting at FileOffset
Buffer - A pointer to the buffer to read the data into.
Returns:
EFI_SUCCESS - ReadSize bytes of data were read into Buffer from the PE/COFF file starting at FileOffset
--*/
@retval EFI_SUCCESS - Image is successfully loaded.
@retval EFI_NOT_FOUND - Fail to locate necessary PPI
@retval Others - Fail to load file.
**/
EFI_STATUS
PeiLoadImageLoadImage (
IN EFI_PEI_SERVICES **PeiServices,
@ -49,30 +38,21 @@ PeiLoadImageLoadImage (
OUT EFI_PHYSICAL_ADDRESS *EntryPoint,
OUT UINT32 *AuthenticationState
)
/*++
Routine Description:
Routine for loading file image.
Arguments:
PeiServices - The PEI core services table.
FileHandle - Pointer to the FFS file header of the image.
ImageAddressArg - Pointer to PE/TE image.
ImageSizeArg - Size of PE/TE image.
EntryPoint - Pointer to entry point of specified image file for output.
AuthenticationState - Pointer to attestation authentication state of image.
Returns:
Status - EFI_SUCCESS - Image is successfully loaded.
EFI_NOT_FOUND - Fail to locate necessary PPI
Others - Fail to load file.
--*/
;
/**
The wrapper function of PeiLoadImageLoadImage().
@param This - Pointer to EFI_PEI_LOAD_FILE_PPI.
@param FileHandle - Pointer to the FFS file header of the image.
@param ImageAddressArg - Pointer to PE/TE image.
@param ImageSizeArg - Size of PE/TE image.
@param EntryPoint - Pointer to entry point of specified image file for output.
@param AuthenticationState - Pointer to attestation authentication state of image.
@return Status of PeiLoadImageLoadImage().
**/
EFI_STATUS
EFIAPI
PeiLoadImageLoadImageWrapper (
@ -83,27 +63,6 @@ PeiLoadImageLoadImageWrapper (
OUT EFI_PHYSICAL_ADDRESS *EntryPoint,
OUT UINT32 *AuthenticationState
)
/*++
Routine Description:
The wrapper function of PeiLoadImageLoadImage().
Arguments:
This - Pointer to EFI_PEI_LOAD_FILE_PPI.
PeiServices - The PEI core services table.
FileHandle - Pointer to the FFS file header of the image.
ImageAddressArg - Pointer to PE/TE image.
ImageSizeArg - Size of PE/TE image.
EntryPoint - Pointer to entry point of specified image file for output.
AuthenticationState - Pointer to attestation authentication state of image.
Returns:
EFI_STATUS.
--*/
;
STATIC EFI_PEI_LOAD_FILE_PPI mPeiLoadImagePpi = {
@ -117,6 +76,19 @@ STATIC EFI_PEI_PPI_DESCRIPTOR gPpiLoadFilePpiList = {
&mPeiLoadImagePpi
};
/**
Support routine for the PE/COFF Loader that reads a buffer from a PE/COFF file
@param FileHandle - The handle to the PE/COFF file
@param FileOffset - The offset, in bytes, into the file to read
@param ReadSize - The number of bytes to read from the file starting at FileOffset
@param Buffer - A pointer to the buffer to read the data into.
@return EFI_SUCCESS - ReadSize bytes of data were read into Buffer from the PE/COFF file starting at FileOffset
**/
EFI_STATUS
EFIAPI
PeiImageRead (
@ -125,24 +97,6 @@ PeiImageRead (
IN OUT UINTN *ReadSize,
OUT VOID *Buffer
)
/*++
Routine Description:
Support routine for the PE/COFF Loader that reads a buffer from a PE/COFF file
Arguments:
FileHandle - The handle to the PE/COFF file
FileOffset - The offset, in bytes, into the file to read
ReadSize - The number of bytes to read from the file starting at FileOffset
Buffer - A pointer to the buffer to read the data into.
Returns:
EFI_SUCCESS - ReadSize bytes of data were read into Buffer from the PE/COFF file starting at FileOffset
--*/
{
CHAR8 *Destination8;
CHAR8 *Source8;
@ -158,27 +112,19 @@ Returns:
return EFI_SUCCESS;
}
/**
Support routine to return the Image Read.
@param ImageContext - The context of the image being loaded
@retval EFI_SUCCESS - If Image function location is found
**/
EFI_STATUS
GetImageReadFunction (
IN PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
)
/*++
Routine Description:
Support routine to return the Image Read
Arguments:
PeiServices - PEI Services Table
ImageContext - The context of the image being loaded
Returns:
EFI_SUCCESS - If Image function location is found
--*/
{
VOID* MemoryBuffer;
@ -192,7 +138,20 @@ Returns:
return EFI_SUCCESS;
}
STATIC
/**
Loads and relocates a PE/COFF image into memory.
@param Pe32Data - The base address of the PE/COFF file that is to be loaded and relocated
@param ImageAddress - The base address of the relocated PE/COFF image
@param ImageSize - The size of the relocated PE/COFF image
@param EntryPoint - The entry point of the relocated PE/COFF image
@retval EFI_SUCCESS The file was loaded and relocated
@retval EFI_OUT_OF_RESOURCES There was not enough memory to load and relocate the PE/COFF file
**/
EFI_STATUS
LoadAndRelocatePeCoffImage (
IN VOID *Pe32Data,
@ -200,29 +159,6 @@ LoadAndRelocatePeCoffImage (
OUT UINT64 *ImageSize,
OUT EFI_PHYSICAL_ADDRESS *EntryPoint
)
/*++
Routine Description:
Loads and relocates a PE/COFF image into memory.
Arguments:
Pe32Data - The base address of the PE/COFF file that is to be loaded and relocated
ImageAddress - The base address of the relocated PE/COFF image
ImageSize - The size of the relocated PE/COFF image
EntryPoint - The entry point of the relocated PE/COFF image
Returns:
EFI_SUCCESS - The file was loaded and relocated
EFI_OUT_OF_RESOURCES - There was not enough memory to load and relocate the PE/COFF file
--*/
{
EFI_STATUS Status;
PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;
@ -286,6 +222,21 @@ Returns:
return EFI_SUCCESS;
}
/**
Routine for loading file image.
@param PeiServices The PEI core services table.
@param FileHandle Pointer to the FFS file header of the image.
@param ImageAddressArg Pointer to PE/TE image.
@param ImageSizeArg Size of PE/TE image.
@param EntryPoint Pointer to entry point of specified image file for output.
@param AuthenticationState - Pointer to attestation authentication state of image.
@retval EFI_SUCCESS - Image is successfully loaded.
@retval EFI_NOT_FOUND - Fail to locate necessary PPI
@retval Others - Fail to load file.
**/
EFI_STATUS
PeiLoadImageLoadImage (
IN EFI_PEI_SERVICES **PeiServices,
@ -295,28 +246,6 @@ PeiLoadImageLoadImage (
OUT EFI_PHYSICAL_ADDRESS *EntryPoint,
OUT UINT32 *AuthenticationState
)
/*++
Routine Description:
Routine for loading file image.
Arguments:
PeiServices - The PEI core services table.
FileHandle - Pointer to the FFS file header of the image.
ImageAddressArg - Pointer to PE/TE image.
ImageSizeArg - Size of PE/TE image.
EntryPoint - Pointer to entry point of specified image file for output.
AuthenticationState - Pointer to attestation authentication state of image.
Returns:
Status - EFI_SUCCESS - Image is successfully loaded.
EFI_NOT_FOUND - Fail to locate necessary PPI
Others - Fail to load file.
--*/
{
EFI_STATUS Status;
VOID *Pe32Data;
@ -464,6 +393,19 @@ Returns:
}
/**
The wrapper function of PeiLoadImageLoadImage().
@param This - Pointer to EFI_PEI_LOAD_FILE_PPI.
@param FileHandle - Pointer to the FFS file header of the image.
@param ImageAddressArg - Pointer to PE/TE image.
@param ImageSizeArg - Size of PE/TE image.
@param EntryPoint - Pointer to entry point of specified image file for output.
@param AuthenticationState - Pointer to attestation authentication state of image.
@return Status of PeiLoadImageLoadImage().
**/
EFI_STATUS
EFIAPI
PeiLoadImageLoadImageWrapper (
@ -474,27 +416,6 @@ PeiLoadImageLoadImageWrapper (
OUT EFI_PHYSICAL_ADDRESS *EntryPoint,
OUT UINT32 *AuthenticationState
)
/*++
Routine Description:
The wrapper function of PeiLoadImageLoadImage().
Arguments:
This - Pointer to EFI_PEI_LOAD_FILE_PPI.
PeiServices - The PEI core services table.
FileHandle - Pointer to the FFS file header of the image.
ImageAddressArg - Pointer to PE/TE image.
ImageSizeArg - Size of PE/TE image.
EntryPoint - Pointer to entry point of specified image file for output.
AuthenticationState - Pointer to attestation authentication state of image.
Returns:
EFI_STATUS.
--*/
{
return PeiLoadImageLoadImage (
GetPeiServicesTablePointer (),
@ -506,6 +427,21 @@ Returns:
);
}
/**
Routine for load image file.
@param PeiServices - The PEI core services table.
@param FileHandle - Pointer to the FFS file header of the image.
@param EntryPoint - Pointer to entry point of specified image file for output.
@param AuthenticationState - Pointer to attestation authentication state of image.
@retval EFI_SUCCESS - Image is successfully loaded.
@retval EFI_NOT_FOUND - Fail to locate necessary PPI
@retval Others - Fail to load file.
**/
EFI_STATUS
PeiLoadImage (
IN EFI_PEI_SERVICES **PeiServices,
@ -513,26 +449,6 @@ PeiLoadImage (
OUT EFI_PHYSICAL_ADDRESS *EntryPoint,
OUT UINT32 *AuthenticationState
)
/*++
Routine Description:
Routine for load image file.
Arguments:
PeiServices - The PEI core services table.
FileHandle - Pointer to the FFS file header of the image.
EntryPoint - Pointer to entry point of specified image file for output.
AuthenticationState - Pointer to attestation authentication state of image.
Returns:
Status - EFI_SUCCESS - Image is successfully loaded.
EFI_NOT_FOUND - Fail to locate necessary PPI
Others - Fail to load file.
--*/
{
EFI_STATUS PpiStatus;
EFI_STATUS Status;
@ -585,27 +501,20 @@ Returns:
}
/**
Install Pei Load File PPI.
@param PrivateData - Pointer to PEI_CORE_INSTANCE.
@param OldCoreData - Pointer to PEI_CORE_INSTANCE.
**/
VOID
InitializeImageServices (
IN PEI_CORE_INSTANCE *PrivateData,
IN PEI_CORE_INSTANCE *OldCoreData
)
/*++
Routine Description:
Install Pei Load File PPI.
Arguments:
PrivateData - Pointer to PEI_CORE_INSTANCE.
OldCoreData - Pointer to PEI_CORE_INSTANCE.
Returns:
NONE.
--*/
{
if (OldCoreData == NULL) {
//

150
MdeModulePkg/Core/Pei/Memory/MemoryServices.c
View File

@ -1,5 +1,6 @@
/** @file
EFI PEI Core memory services
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -9,45 +10,29 @@ 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.
Module Name:
MemoryServices.c
Abstract:
EFI PEI Core memory services
**/
#include <PeiMain.h>
/**
Initialize the memory services.
@param PrivateData Add parameter description
@param SecCoreData Points to a data structure containing information about the PEI core's operating
environment, such as the size and location of temporary RAM, the stack location and
the BFV location.
@param OldCoreData Pointer to the PEI Core data.
NULL if being run in non-permament memory mode.
**/
VOID
InitializeMemoryServices (
IN PEI_CORE_INSTANCE *PrivateData,
IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,
IN PEI_CORE_INSTANCE *OldCoreData
)
/*++
Routine Description:
Initialize the memory services.
Arguments:
PeiServices - The PEI core services table.
SecCoreData - Points to a data structure containing information about the PEI core's operating
environment, such as the size and location of temporary RAM, the stack location and
the BFV location.
OldCoreData - Pointer to the PEI Core data.
NULL if being run in non-permament memory mode.
Returns:
None
--*/
{
PrivateData->SwitchStackSignal = FALSE;
@ -85,6 +70,18 @@ Returns:
return;
}
/**
Install the permanent memory is now available.
Creates HOB (PHIT and Stack).
@param PeiServices - The PEI core services table.
@param MemoryBegin - Start of memory address.
@param MemoryLength - Length of memory.
@return EFI_SUCCESS Always success.
**/
EFI_STATUS
EFIAPI
PeiInstallPeiMemory (
@ -92,24 +89,6 @@ PeiInstallPeiMemory (
IN EFI_PHYSICAL_ADDRESS MemoryBegin,
IN UINT64 MemoryLength
)
/*++
Routine Description:
Install the permanent memory is now available.
Creates HOB (PHIT and Stack).
Arguments:
PeiServices - The PEI core services table.
MemoryBegin - Start of memory address.
MemoryLength - Length of memory.
Returns:
Status - EFI_SUCCESS
--*/
{
PEI_CORE_INSTANCE *PrivateData;
@ -125,6 +104,24 @@ Returns:
return EFI_SUCCESS;
}
/**
Memory allocation service on permanent memory,
not usable prior to the memory installation.
@param PeiServices - The PEI core services table.
@param MemoryType - Type of memory to allocate.
@param Pages - Number of pages to allocate.
@param Memory - Pointer of memory allocated.
@retval EFI_SUCCESS The allocation was successful
@retval EFI_INVALID_PARAMETER Only AllocateAnyAddress is supported.
@retval EFI_NOT_AVAILABLE_YET Called with permanent memory not available
@retval EFI_OUT_OF_RESOURCES There is not enough HOB heap to satisfy the requirement
to allocate the number of pages.
**/
EFI_STATUS
EFIAPI
PeiAllocatePages (
@ -133,29 +130,6 @@ PeiAllocatePages (
IN UINTN Pages,
OUT EFI_PHYSICAL_ADDRESS *Memory
)
/*++
Routine Description:
Memory allocation service on permanent memory,
not usable prior to the memory installation.
Arguments:
PeiServices - The PEI core services table.
MemoryType - Type of memory to allocate.
Pages - Number of pages to allocate.
Memory - Pointer of memory allocated.
Returns:
Status - EFI_SUCCESS The allocation was successful
EFI_INVALID_PARAMETER Only AllocateAnyAddress is supported.
EFI_NOT_AVAILABLE_YET Called with permanent memory not available
EFI_OUT_OF_RESOURCES There is not enough HOB heap to satisfy the requirement
to allocate the number of pages.
--*/
{
PEI_CORE_INSTANCE *PrivateData;
EFI_PEI_HOB_POINTERS Hob;
@ -232,7 +206,20 @@ Returns:
}
}
/**
Memory allocation service on the CAR.
@param PeiServices - The PEI core services table.
@param Size - Amount of memory required
@param Buffer - Address of pointer to the buffer
@retval EFI_SUCCESS The allocation was successful
@retval EFI_OUT_OF_RESOURCES There is not enough heap to satisfy the requirement
to allocate the requested size.
**/
EFI_STATUS
EFIAPI
PeiAllocatePool (
@ -240,27 +227,6 @@ PeiAllocatePool (
IN UINTN Size,
OUT VOID **Buffer
)
/*++
Routine Description:
Memory allocation service on the CAR.
Arguments:
PeiServices - The PEI core services table.
Size - Amount of memory required
Buffer - Address of pointer to the buffer
Returns:
Status - EFI_SUCCESS The allocation was successful
EFI_OUT_OF_RESOURCES There is not enough heap to satisfy the requirement
to allocate the requested size.
--*/
{
EFI_STATUS Status;
EFI_HOB_MEMORY_POOL *Hob;

1312
MdeModulePkg/Core/Pei/PeiMain.h
View File

File diff suppressed because it is too large Load Diff

71
MdeModulePkg/Core/Pei/PeiMain/PeiMain.c
View File

@ -1,5 +1,6 @@
/** @file
Pei Core Main Entry Point
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -9,21 +10,11 @@ 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.
Module Name:
PeiMain.c
Abstract:
Pei Core Main Entry Point
Revision History
**/
#include <PeiMain.h>
static EFI_PEI_PPI_DESCRIPTOR mMemoryDiscoveredPpi = {
STATIC EFI_PEI_PPI_DESCRIPTOR mMemoryDiscoveredPpi = {
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gEfiPeiMemoryDiscoveredPpiGuid,
NULL
@ -33,7 +24,7 @@ static EFI_PEI_PPI_DESCRIPTOR mMemoryDiscoveredPpi = {
// Pei Core Module Variables
//
//
static EFI_PEI_SERVICES mPS = {
STATIC EFI_PEI_SERVICES gPs = {
{
PEI_SERVICES_SIGNATURE,
PEI_SERVICES_REVISION,
@ -74,6 +65,28 @@ static EFI_PEI_SERVICES mPS = {
PeiRegisterForShadow
};
/**
The entry routine to Pei Core, invoked by PeiMain during transition
from SEC to PEI. After switching stack in the PEI core, it will restart
with the old core data.
@param SecCoreData Points to a data structure containing information about the PEI core's operating
environment, such as the size and location of temporary RAM, the stack location and
the BFV location.
@param PpiList Points to a list of one or more PPI descriptors to be installed initially by the PEI core.
An empty PPI list consists of a single descriptor with the end-tag
EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST. As part of its initialization
phase, the PEI Foundation will add these SEC-hosted PPIs to its PPI database such
that both the PEI Foundation and any modules can leverage the associated service
calls and/or code in these early PPIs
@param Data Pointer to old core data that is used to initialize the
core's data areas.
@retval EFI_NOT_FOUND Never reach
**/
EFI_STATUS
EFIAPI
PeiCore (
@ -81,34 +94,6 @@ PeiCore (
IN CONST EFI_PEI_PPI_DESCRIPTOR *PpiList,
IN VOID *Data
)
/*++
Routine Description:
The entry routine to Pei Core, invoked by PeiMain during transition
from SEC to PEI. After switching stack in the PEI core, it will restart
with the old core data.
Arguments:
SecCoreData - Points to a data structure containing information about the PEI core's operating
environment, such as the size and location of temporary RAM, the stack location and
the BFV location.
PpiList - Points to a list of one or more PPI descriptors to be installed initially by the PEI core.
An empty PPI list consists of a single descriptor with the end-tag
EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST. As part of its initialization
phase, the PEI Foundation will add these SEC-hosted PPIs to its PPI database such
that both the PEI Foundation and any modules can leverage the associated service
calls and/or code in these early PPIs
Data - Pointer to old core data that is used to initialize the
core's data areas.
Returns:
This function never returns
EFI_NOT_FOUND - Never reach
--*/
{
PEI_CORE_INSTANCE PrivateData;
EFI_STATUS Status;
@ -144,14 +129,14 @@ Returns:
CpuIo = (VOID*)PrivateData.ServiceTableShadow.CpuIo;
PciCfg = (VOID*)PrivateData.ServiceTableShadow.PciCfg;
CopyMem (&PrivateData.ServiceTableShadow, &mPS, sizeof (mPS));
CopyMem (&PrivateData.ServiceTableShadow, &gPs, sizeof (gPs));
PrivateData.ServiceTableShadow.CpuIo = CpuIo;
PrivateData.ServiceTableShadow.PciCfg = PciCfg;
} else {
ZeroMem (&PrivateData, sizeof (PEI_CORE_INSTANCE));
PrivateData.Signature = PEI_CORE_HANDLE_SIGNATURE;
CopyMem (&PrivateData.ServiceTableShadow, &mPS, sizeof (mPS));
CopyMem (&PrivateData.ServiceTableShadow, &gPs, sizeof (gPs));
}
PrivateData.PS = &PrivateData.ServiceTableShadow;

247
MdeModulePkg/Core/Pei/Ppi/Ppi.c
View File

@ -1,5 +1,6 @@
/** @file
EFI PEI Core PPI services
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -9,51 +10,43 @@ 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.
Module Name:
Ppi.c
Abstract:
EFI PEI Core PPI services
Revision History
**/
#include <PeiMain.h>
/**
Initialize PPI services.
@param PrivateData Pointer to the PEI Core data.
@param OldCoreData Pointer to old PEI Core data.
NULL if being run in non-permament memory mode.
**/
VOID
InitializePpiServices (
IN PEI_CORE_INSTANCE *PrivateData,
IN PEI_CORE_INSTANCE *OldCoreData
)
/*++
Routine Description:
Initialize PPI services.
Arguments:
PeiServices - The PEI core services table.
OldCoreData - Pointer to the PEI Core data.
NULL if being run in non-permament memory mode.
Returns:
Nothing
--*/
{
if (OldCoreData == NULL) {
PrivateData->PpiData.NotifyListEnd = FixedPcdGet32 (PcdPeiCoreMaxPpiSupported)-1;
PrivateData->PpiData.DispatchListEnd = FixedPcdGet32 (PcdPeiCoreMaxPpiSupported)-1;
PrivateData->PpiData.LastDispatchedNotify = FixedPcdGet32 (PcdPeiCoreMaxPpiSupported)-1;
}
return;
}
/**
Migrate the Hob list from the CAR stack to PEI installed memory.
@param PeiServices The PEI core services table.
@param OldCheckingBottom The old checking bottom.
@param OldCheckingTop The old checking top.
@param NewHandOffHob The new handoff HOB list.
**/
VOID
ConvertPpiPointers (
IN CONST EFI_PEI_SERVICES **PeiServices,
@ -61,22 +54,6 @@ ConvertPpiPointers (
IN UINTN OldCheckingTop,
IN EFI_HOB_HANDOFF_INFO_TABLE *NewHandOffHob
)
/*++
Routine Description:
Migrate the Hob list from the CAR stack to PEI installed memory.
Arguments:
PeiServices - The PEI core services table.
OldCheckingBottom - The old checking bottom.
OldCheckingTop - The old checking top.
NewHandOffHob - The new handoff HOB list.
Returns:
--*/
{
PEI_CORE_INSTANCE *PrivateData;
UINT8 Index;
@ -132,33 +109,25 @@ Returns:
}
}
/**
Install PPI services.
@param PeiServices - Pointer to the PEI Service Table
@param PpiList - Pointer to a list of PEI PPI Descriptors.
@retval EFI_SUCCESS - if all PPIs in PpiList are successfully installed.
@retval EFI_INVALID_PARAMETER - if PpiList is NULL pointer
@retval EFI_INVALID_PARAMETER - if any PPI in PpiList is not valid
@retval EFI_OUT_OF_RESOURCES - if there is no more memory resource to install PPI
**/
EFI_STATUS
EFIAPI
PeiInstallPpi (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN CONST EFI_PEI_PPI_DESCRIPTOR *PpiList
)
/*++
Routine Description:
Install PPI services.
Arguments:
PeiServices - Pointer to the PEI Service Table
PpiList - Pointer to a list of PEI PPI Descriptors.
Returns:
EFI_SUCCESS - if all PPIs in PpiList are successfully installed.
EFI_INVALID_PARAMETER - if PpiList is NULL pointer
EFI_INVALID_PARAMETER - if any PPI in PpiList is not valid
EFI_OUT_OF_RESOURCES - if there is no more memory resource to install PPI
--*/
{
PEI_CORE_INSTANCE *PrivateData;
INTN Index;
@ -230,7 +199,20 @@ Returns:
return EFI_SUCCESS;
}
/**
Re-Install PPI services.
@param PeiServices - Pointer to the PEI Service Table
@param OldPpi - Pointer to the old PEI PPI Descriptors.
@param NewPpi - Pointer to the new PEI PPI Descriptors.
@retval EFI_SUCCESS - if the operation was successful
@retval EFI_INVALID_PARAMETER - if OldPpi or NewPpi is NULL
@retval EFI_INVALID_PARAMETER - if NewPpi is not valid
@retval EFI_NOT_FOUND - if the PPI was not in the database
**/
EFI_STATUS
EFIAPI
PeiReInstallPpi (
@ -238,26 +220,6 @@ PeiReInstallPpi (
IN CONST EFI_PEI_PPI_DESCRIPTOR *OldPpi,
IN CONST EFI_PEI_PPI_DESCRIPTOR *NewPpi
)
/*++
Routine Description:
Re-Install PPI services.
Arguments:
PeiServices - Pointer to the PEI Service Table
OldPpi - Pointer to the old PEI PPI Descriptors.
NewPpi - Pointer to the new PEI PPI Descriptors.
Returns:
EFI_SUCCESS - if the operation was successful
EFI_INVALID_PARAMETER - if OldPpi or NewPpi is NULL
EFI_INVALID_PARAMETER - if NewPpi is not valid
EFI_NOT_FOUND - if the PPI was not in the database
--*/
{
PEI_CORE_INSTANCE *PrivateData;
INTN Index;
@ -308,7 +270,22 @@ Returns:
return EFI_SUCCESS;
}
/**
Locate a given named PPI.
@param PeiServices - Pointer to the PEI Service Table
@param Guid - Pointer to GUID of the PPI.
@param Instance - Instance Number to discover.
@param PpiDescriptor - Pointer to reference the found descriptor. If not NULL,
returns a pointer to the descriptor (includes flags, etc)
@param Ppi - Pointer to reference the found PPI
@retval EFI_SUCCESS if the PPI is in the database
@retval EFI_NOT_FOUND if the PPI is not in the database
**/
EFI_STATUS
EFIAPI
PeiLocatePpi (
@ -318,26 +295,6 @@ PeiLocatePpi (
IN OUT EFI_PEI_PPI_DESCRIPTOR **PpiDescriptor,
IN OUT VOID **Ppi
)
/*++
Routine Description:
Locate a given named PPI.
Arguments:
PeiServices - Pointer to the PEI Service Table
Guid - Pointer to GUID of the PPI.
Instance - Instance Number to discover.
PpiDescriptor - Pointer to reference the found descriptor. If not NULL,
returns a pointer to the descriptor (includes flags, etc)
Ppi - Pointer to reference the found PPI
Returns:
Status - EFI_SUCCESS if the PPI is in the database
EFI_NOT_FOUND if the PPI is not in the database
--*/
{
PEI_CORE_INSTANCE *PrivateData;
INTN Index;
@ -383,31 +340,25 @@ Returns:
return EFI_NOT_FOUND;
}
/**
Install a notification for a given PPI.
@param PeiServices - Pointer to the PEI Service Table
@param NotifyList - Pointer to list of Descriptors to notify upon.
@retval EFI_SUCCESS if successful
@retval EFI_OUT_OF_RESOURCES if no space in the database
@retval EFI_INVALID_PARAMETER if not a good decriptor
**/
EFI_STATUS
EFIAPI
PeiNotifyPpi (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN CONST EFI_PEI_NOTIFY_DESCRIPTOR *NotifyList
)
/*++
Routine Description:
Install a notification for a given PPI.
Arguments:
PeiServices - Pointer to the PEI Service Table
NotifyList - Pointer to list of Descriptors to notify upon.
Returns:
Status - EFI_SUCCESS if successful
EFI_OUT_OF_RESOURCES if no space in the database
EFI_INVALID_PARAMETER if not a good decriptor
--*/
{
PEI_CORE_INSTANCE *PrivateData;
INTN Index;
@ -507,24 +458,17 @@ Returns:
}
/**
Process the Notify List at dispatch level.
@param PrivateData PeiCore's private data structure.
**/
VOID
ProcessNotifyList (
IN PEI_CORE_INSTANCE *PrivateData
)
/*++
Routine Description:
Process the Notify List at dispatch level.
Arguments:
PeiServices - Pointer to the PEI Service Table
Returns:
--*/
{
INTN TempValue;
@ -577,6 +521,18 @@ Returns:
return;
}
/**
Dispatch notifications.
@param PrivateData PeiCore's private data structure
@param NotifyType Type of notify to fire.
@param InstallStartIndex Install Beginning index.
@param InstallStopIndex Install Ending index.
@param NotifyStartIndex Notify Beginning index.
@param NotifyStopIndex Notify Ending index.
**/
VOID
DispatchNotify (
IN PEI_CORE_INSTANCE *PrivateData,
@ -586,25 +542,6 @@ DispatchNotify (
IN INTN NotifyStartIndex,
IN INTN NotifyStopIndex
)
/*++
Routine Description:
Dispatch notifications.
Arguments:
PeiServices - Pointer to the PEI Service Table
NotifyType - Type of notify to fire.
InstallStartIndex - Install Beginning index.
InstallStopIndex - Install Ending index.
NotifyStartIndex - Notify Beginning index.
NotifyStopIndex - Notify Ending index.
Returns: None
--*/
{
INTN Index1;
INTN Index2;

43
MdeModulePkg/Core/Pei/Reset/Reset.c
View File

@ -1,5 +1,6 @@
/** @file
Pei Core Reset System Support
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -9,43 +10,27 @@ 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.
Module Name:
Reset.c
Abstract:
Pei Core Reset System Support
Revision History
**/
#include <PeiMain.h>
/**
Core version of the Reset System
@param PeiServices - The PEI core services table.
@retval EFI_NOT_AVAILABLE_YET PPI not available yet.
@retval EFI_DEVICE_ERROR Did not reset system.
Otherwise, resets the system.
**/
EFI_STATUS
EFIAPI
PeiResetSystem (
IN CONST EFI_PEI_SERVICES **PeiServices
)
/*++
Routine Description:
Core version of the Reset System
Arguments:
PeiServices - The PEI core services table.
Returns:
Status - EFI_NOT_AVAILABLE_YET. PPI not available yet.
- EFI_DEVICE_ERROR. Did not reset system.
Otherwise, resets the system.
--*/
{
EFI_STATUS Status;
EFI_PEI_RESET_PPI *ResetPpi;

135
MdeModulePkg/Core/Pei/Security/Security.c
View File

@ -1,5 +1,6 @@
/** @file
EFI PEI Core Security services
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -9,19 +10,21 @@ 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.
Module Name:
Security.c
Abstract:
EFI PEI Core Security services
**/
#include <PeiMain.h>
STATIC
/**
Provide a callback for when the security PPI is installed.
@param PeiServices - The PEI core services table.
@param NotifyDescriptor - The descriptor for the notification event.
@param Ppi - Pointer to the PPI in question.
@return Always success
**/
EFI_STATUS
EFIAPI
SecurityPpiNotifyCallback (
@ -30,33 +33,27 @@ SecurityPpiNotifyCallback (
IN VOID *Ppi
);
static EFI_PEI_NOTIFY_DESCRIPTOR mNotifyList = {
STATIC EFI_PEI_NOTIFY_DESCRIPTOR mNotifyList = {
EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
&gEfiPeiSecurity2PpiGuid,
SecurityPpiNotifyCallback
};
/**
Initialize the security services.
@param PeiServices - The PEI core services table.
@param OldCoreData - Pointer to the old core data.
NULL if being run in non-permament memory mode.
**/
VOID
InitializeSecurityServices (
IN EFI_PEI_SERVICES **PeiServices,
IN PEI_CORE_INSTANCE *OldCoreData
)
/*++
Routine Description:
Initialize the security services.
Arguments:
PeiServices - The PEI core services table.
OldCoreData - Pointer to the old core data.
NULL if being run in non-permament memory mode.
Returns:
None
--*/
{
if (OldCoreData == NULL) {
PeiServicesNotifyPpi (&mNotifyList);
@ -64,7 +61,17 @@ Returns:
return;
}
STATIC
/**
Provide a callback for when the security PPI is installed.
@param PeiServices - The PEI core services table.
@param NotifyDescriptor - The descriptor for the notification event.
@param Ppi - Pointer to the PPI in question.
@return Always success
**/
EFI_STATUS
EFIAPI
SecurityPpiNotifyCallback (
@ -72,23 +79,6 @@ SecurityPpiNotifyCallback (
IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
IN VOID *Ppi
)
/*++
Routine Description:
Provide a callback for when the security PPI is installed.
Arguments:
PeiServices - The PEI core services table.
NotifyDescriptor - The descriptor for the notification event.
Ppi - Pointer to the PPI in question.
Returns:
EFI_SUCCESS - The function is successfully processed.
--*/
{
PEI_CORE_INSTANCE *PrivateData;
@ -106,29 +96,25 @@ Returns:
return EFI_SUCCESS;
}
/**
Provide a callout to the security verification service.
@param PrivateData PeiCore's private data structure
@param VolumeHandle Handle of FV
@param FileHandle Handle of PEIM's ffs
@retval EFI_SUCCESS Image is OK
@retval EFI_SECURITY_VIOLATION Image is illegal
**/
EFI_STATUS
VerifyPeim (
IN PEI_CORE_INSTANCE *PrivateData,
IN EFI_PEI_FV_HANDLE VolumeHandle,
IN EFI_PEI_FILE_HANDLE FileHandle
)
/*++
Routine Description:
Provide a callout to the security verification service.
Arguments:
PeiServices - The PEI core services table.
CurrentPeimAddress - Pointer to the Firmware File under investigation.
Returns:
EFI_SUCCESS - Image is OK
EFI_SECURITY_VIOLATION - Image is illegal
--*/
{
EFI_STATUS Status;
UINT32 AuthenticationStatus;
@ -161,26 +147,19 @@ Returns:
}
/**
Verify a Firmware volume.
@param CurrentFvAddress - Pointer to the current Firmware Volume under consideration
@retval EFI_SUCCESS - Firmware Volume is legal
@retval EFI_SECURITY_VIOLATION - Firmware Volume fails integrity test
**/
EFI_STATUS
VerifyFv (
IN EFI_FIRMWARE_VOLUME_HEADER *CurrentFvAddress
)
/*++
Routine Description:
Verify a Firmware volume
Arguments:
CurrentFvAddress - Pointer to the current Firmware Volume under consideration
Returns:
EFI_SUCCESS - Firmware Volume is legal
EFI_SECURITY_VIOLATION - Firmware Volume fails integrity test
--*/
{
//
// Right now just pass the test. Future can authenticate and/or check the

56
MdeModulePkg/Core/Pei/StatusCode/StatusCode.c
View File

@ -1,5 +1,6 @@
/** @file
Pei Core Status Code Support
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -9,20 +10,26 @@ 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.
Module Name:
StatusCode.c
Abstract:
Pei Core Status Code Support
Revision History
**/
#include <PeiMain.h>
/**
Core version of the Status Code reporter
@param PeiServices The PEI core services table.
@param CodeType Type of Status Code.
@param Value Value to output for Status Code.
@param Instance Instance Number of this status code.
@param CallerId ID of the caller of this status code.
@param Data Optional data associated with this status code.
@retval EFI_SUCCESS if status code is successfully reported
@retval EFI_NOT_AVAILABLE_YET if StatusCodePpi has not been installed
**/
EFI_STATUS
EFIAPI
PeiReportStatusCode (
@ -33,32 +40,6 @@ PeiReportStatusCode (
IN CONST EFI_GUID *CallerId,
IN CONST EFI_STATUS_CODE_DATA *Data OPTIONAL
)
/*++
Routine Description:
Core version of the Status Code reporter
Arguments:
PeiServices - The PEI core services table.
CodeType - Type of Status Code.
Value - Value to output for Status Code.
Instance - Instance Number of this status code.
CallerId - ID of the caller of this status code.
Data - Optional data associated with this status code.
Returns:
Status - EFI_SUCCESS if status code is successfully reported
- EFI_NOT_AVAILABLE_YET if StatusCodePpi has not been installed
--*/
{
EFI_STATUS Status;
EFI_PEI_PROGRESS_CODE_PPI *StatusCodePpi;
@ -87,7 +68,6 @@ Returns:
return Status;
}
return EFI_NOT_AVAILABLE_YET;
}