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Rename DxePiLib to DxeServicesLib

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6509 6f19259b-4bc3-4df7-8a09-765794883524
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qhuang8
2008-11-13 08:54:56 +00:00
parent 9f8741247e
commit eb9dd4d058
2 changed files with 29 additions and 29 deletions
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408
MdePkg/Library/DxeServicesLib/DxeServicesLib.c Normal file
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/** @file
Mde PI library functions.
Copyright (c) 2007 - 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 <PiDxe.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DxeServicesLib.h>
#include <Protocol/FirmwareVolume2.h>
#include <Protocol/LoadedImage.h>
/**
Identify the device handle from which the Image is loaded from. As this device handle is passed to
GetSectionFromFv as the identifier for a Firmware Volume, an EFI_FIRMWARE_VOLUME2_PROTOCOL
protocol instance should be located succesfully by calling gBS->HandleProtocol ().
This function locates the EFI_LOADED_IMAGE_PROTOCOL instance installed
on ImageHandle. It then returns EFI_LOADED_IMAGE_PROTOCOL.DeviceHandle.
If ImageHandle is NULL, then ASSERT ();
If failed to locate a EFI_LOADED_IMAGE_PROTOCOL on ImageHandle, then ASSERT ();
@param ImageHandle The firmware allocated handle for UEFI image.
@retval EFI_HANDLE The device handle from which the Image is loaded from.
**/
EFI_HANDLE
InternalImageHandleToFvHandle (
EFI_HANDLE ImageHandle
)
{
EFI_STATUS Status;
EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
ASSERT (ImageHandle != NULL);
Status = gBS->HandleProtocol (
(EFI_HANDLE *) ImageHandle,
&gEfiLoadedImageProtocolGuid,
(VOID **) &LoadedImage
);
ASSERT_EFI_ERROR (Status);
return LoadedImage->DeviceHandle;
}
/**
Allocate and fill a buffer from a Firmware Section identified by a Firmware File GUID name, a Firmware
Section type and instance number from the specified Firmware Volume.
This functions first locate the EFI_FIRMWARE_VOLUME2_PROTOCOL protocol instance on FvHandle in order to
carry out the Firmware Volume read operation. The function then reads the Firmware Section found sepcifed
by NameGuid, SectionType and SectionInstance.
The details of this search order is defined in description of EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection ()
found in PI Specification.
If SectionType is EFI_SECTION_TE, EFI_SECTION_TE is used as section type to start the search. If EFI_SECTION_TE section
is not found, EFI_SECTION_PE32 will be used to try the search again. If no EFI_SECTION_PE32 section is found, EFI_NOT_FOUND
is returned.
The data and size is returned by Buffer and Size. The caller is responsible to free the Buffer allocated
by this function. This function can be only called at TPL_NOTIFY and below.
If FvHandle is NULL, then ASSERT ();
If NameGuid is NULL, then ASSERT();
If Buffer is NULL, then ASSERT();
If Size is NULL, then ASSERT().
@param FvHandle The device handle that contains a instance of EFI_FIRMWARE_VOLUME2_PROTOCOL instance.
@param NameGuid The GUID name of a Firmware File.
@param SectionType The Firmware Section type.
@param SectionInstance The instance number of Firmware Section to read from starting from 0.
@param Buffer On output, Buffer contains the the data read from the section in the Firmware File found.
@param Size On output, the size of Buffer.
@retval EFI_SUCCESS The image is found and data and size is returned.
@retval EFI_UNSUPPORTED FvHandle does not support EFI_FIRMWARE_VOLUME2_PROTOCOL.
@retval EFI_NOT_FOUND The image specified by NameGuid and SectionType can't be found.
@retval EFI_OUT_OF_RESOURCES There were not enough resources to allocate the output data buffer or complete the operations.
@retval EFI_DEVICE_ERROR A hardware error occurs during reading from the Firmware Volume.
@retval EFI_ACCESS_DENIED The firmware volume containing the searched Firmware File is configured to disallow reads.
**/
EFI_STATUS
InternalGetSectionFromFv (
IN EFI_HANDLE FvHandle,
IN CONST EFI_GUID *NameGuid,
IN EFI_SECTION_TYPE SectionType,
IN UINTN SectionInstance,
OUT VOID **Buffer,
OUT UINTN *Size
)
{
EFI_STATUS Status;
EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;
UINT32 AuthenticationStatus;
ASSERT (NameGuid != NULL);
ASSERT (Buffer != NULL);
ASSERT (Size != NULL);
ASSERT (FvHandle != NULL);
Status = gBS->HandleProtocol (
FvHandle,
&gEfiFirmwareVolume2ProtocolGuid,
(VOID **) &Fv
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Read desired section content in NameGuid file
//
*Buffer = NULL;
*Size = 0;
Status = Fv->ReadSection (
Fv,
NameGuid,
SectionType,
SectionInstance,
Buffer,
Size,
&AuthenticationStatus
);
if (EFI_ERROR (Status) && (SectionType == EFI_SECTION_TE)) {
//
// Try reading PE32 section, if the required section is TE type
//
*Buffer = NULL;
*Size = 0;
Status = Fv->ReadSection (
Fv,
NameGuid,
EFI_SECTION_PE32,
SectionInstance,
Buffer,
Size,
&AuthenticationStatus
);
}
return Status;
}
/**
Locates a requested firmware section within a file and returns it to a buffer allocated by this function.
GetSectionFromAnyFv () is used to read a specific section from a file within a firmware volume. The function
will search the first file with the specified name in all firmware volumes in the system. The search order for firmware
volumes in the system is determistic but abitrary if no new firmware volume is added into the system between
each calls of this function.
After the specific file is located, the function searches the specifc firmware section with type SectionType in this file.
The details of this search order is defined in description of EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection ()
found in PI Specification.
If SectionType is EFI_SECTION_TE, EFI_SECTION_TE is used as section type to start the search. If EFI_SECTION_TE section
is not found, EFI_SECTION_PE32 will be used to try the search again. If no EFI_SECTION_PE32 section is found, EFI_NOT_FOUND
is returned.
The data and size is returned by Buffer and Size. The caller is responsible to free the Buffer allocated
by this function. This function can only be called at TPL_NOTIFY and below.
If NameGuid is NULL, then ASSERT();
If Buffer is NULL, then ASSERT();
If Size is NULL, then ASSERT().
@param NameGuid Pointer to an EFI_GUID, which indicates the file name from which the requested
section will be read. Type EFI_GUID is defined in
InstallProtocolInterface() in the UEFI 2.0 specification.
@param SectionType Indicates the section type to return. SectionType in conjunction with
SectionInstance indicates which section to return. Type
EFI_SECTION_TYPE is defined in EFI_COMMON_SECTION_HEADER.
@param SectionInstance Indicates which instance of sections with a type of SectionType to return.
SectionType in conjunction with SectionInstance indicates which section to
return. SectionInstance is zero based.
@param Buffer Pointer to a pointer to a buffer in which the section contents are returned, not
including the section header. Caller is responsible to free this memory.
@param Size Pointer to a caller-allocated UINTN. It indicates the size of the memory represented by
*Buffer.
@retval EFI_SUCCESS The image is found and data and size is returned.
@retval EFI_NOT_FOUND The image specified by NameGuid and SectionType can't be found.
@retval EFI_OUT_OF_RESOURCES There were not enough resources to allocate the output data buffer or complete the operations.
@retval EFI_DEVICE_ERROR A hardware error occurs during reading from the Firmware Volume.
@retval EFI_ACCESS_DENIED The firmware volume containing the searched Firmware File is configured to disallow reads.
**/
EFI_STATUS
EFIAPI
GetSectionFromAnyFv (
IN CONST EFI_GUID *NameGuid,
IN EFI_SECTION_TYPE SectionType,
IN UINTN SectionInstance,
OUT VOID **Buffer,
OUT UINTN *Size
)
{
EFI_STATUS Status;
EFI_HANDLE *HandleBuffer;
UINTN HandleCount;
UINTN Index;
EFI_HANDLE FvHandle;
//
// Search the FV that contain the caller's FFS first.
// FV builder can choose to build FFS into the this FV
// so that this implementation of GetSectionFromAnyFv
// will locate the FFS faster.
//
FvHandle = InternalImageHandleToFvHandle (gImageHandle);
Status = InternalGetSectionFromFv (
FvHandle,
NameGuid,
SectionType,
SectionInstance,
Buffer,
Size
);
if (!EFI_ERROR (Status)) {
return EFI_SUCCESS;
}
HandleBuffer = NULL;
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiFirmwareVolume2ProtocolGuid,
NULL,
&HandleCount,
&HandleBuffer
);
if (EFI_ERROR (Status)) {
goto Done;
}
for (Index = 0; Index < HandleCount; Index++) {
//
// Skip the FV that contain the caller's FFS
//
if (HandleBuffer[Index] != FvHandle) {
Status = InternalGetSectionFromFv (
HandleBuffer[Index],
NameGuid,
SectionType,
SectionInstance,
Buffer,
Size
);
if (!EFI_ERROR (Status)) {
goto Done;
}
}
}
if (Index == HandleCount) {
Status = EFI_NOT_FOUND;
}
Done:
if (HandleBuffer != NULL) {
FreePool(HandleBuffer);
}
return Status;
}
/**
Locates a requested firmware section within a file and returns it to a buffer allocated by this function.
GetSectionFromFv () is used to read a specific section from a file within the same firmware volume from which
the running image is loaded. If the specific file is found, the function searches the specifc firmware section with type SectionType.
The details of this search order is defined in description of EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection ()
found in PI Specification.
If SectionType is EFI_SECTION_TE, EFI_SECTION_TE is used as section type to start the search. If EFI_SECTION_TE section
is not found, EFI_SECTION_PE32 will be used to try the search again. If no EFI_SECTION_PE32 section is found, EFI_NOT_FOUND
is returned.
The data and size is returned by Buffer and Size. The caller is responsible to free the Buffer allocated
by this function. This function can be only called at TPL_NOTIFY and below.
If NameGuid is NULL, then ASSERT();
If Buffer is NULL, then ASSERT();
If Size is NULL, then ASSERT().
@param NameGuid Pointer to an EFI_GUID, which indicates the file name from which the requested
section will be read. Type EFI_GUID is defined in
InstallProtocolInterface() in the UEFI 2.0 specification.
@param SectionType Indicates the section type to return. SectionType in conjunction with
SectionInstance indicates which section to return. Type
EFI_SECTION_TYPE is defined in EFI_COMMON_SECTION_HEADER.
@param SectionInstance Indicates which instance of sections with a type of SectionType to return.
SectionType in conjunction with SectionInstance indicates which section to
return. SectionInstance is zero based.
@param Buffer Pointer to a pointer to a buffer in which the section contents are returned, not
including the section header. Caller is responsible to free this memory.
@param Size Pointer to a caller-allocated UINTN. It indicates the size of the memory represented by
*Buffer.
@retval EFI_SUCCESS The image is found and data and size is returned.
@retval EFI_UNSUPPORTED FvHandle does not support EFI_FIRMWARE_VOLUME2_PROTOCOL.
@retval EFI_NOT_FOUND The image specified by NameGuid and SectionType can't be found.
@retval EFI_OUT_OF_RESOURCES There were not enough resources to allocate the output data buffer or complete the operations.
@retval EFI_DEVICE_ERROR A hardware error occurs during reading from the Firmware Volume.
@retval EFI_ACCESS_DENIED The firmware volume containing the searched Firmware File is configured to disallow reads.
**/
EFI_STATUS
EFIAPI
GetSectionFromFv (
IN CONST EFI_GUID *NameGuid,
IN EFI_SECTION_TYPE SectionType,
IN UINTN SectionInstance,
OUT VOID **Buffer,
OUT UINTN *Size
)
{
return InternalGetSectionFromFv (
InternalImageHandleToFvHandle(gImageHandle),
NameGuid,
SectionType,
SectionInstance,
Buffer,
Size
);
}
/**
Locates a requested firmware section within a file and returns it to a buffer allocated by this function.
GetSectionFromFfs () searches the specifc firmware section with type SectionType in the same firmware file from
which the running image is loaded. The details of this search order is defined in description of
EFI_FIRMWARE_VOLUME2_PROTOCOL.ReadSection () found in PI Specification.
If SectionType is EFI_SECTION_TE, EFI_SECTION_TE is used as section type to start the search. If EFI_SECTION_TE section
is not found, EFI_SECTION_PE32 will be used to try the search again. If no EFI_SECTION_PE32 section is found, EFI_NOT_FOUND
is returned.
The data and size is returned by Buffer and Size. The caller is responsible to free the Buffer allocated
by this function. This function can only be called at TPL_NOTIFY and below.
If Buffer is NULL, then ASSERT();
If Size is NULL, then ASSERT().
@param SectionType Indicates the section type to return. SectionType in conjunction with
SectionInstance indicates which section to return. Type
EFI_SECTION_TYPE is defined in EFI_COMMON_SECTION_HEADER.
@param SectionInstance Indicates which instance of sections with a type of SectionType to return.
SectionType in conjunction with SectionInstance indicates which section to
return. SectionInstance is zero based.
@param Buffer Pointer to a pointer to a buffer in which the section contents are returned, not
including the section header. Caller is responsible to free this memory.
@param Size Pointer to a caller-allocated UINTN. It indicates the size of the memory represented by
*Buffer.
@retval EFI_SUCCESS The image is found and data and size is returned.
@retval EFI_NOT_FOUND The image specified by NameGuid and SectionType can't be found.
@retval EFI_OUT_OF_RESOURCES There were not enough resources to allocate the output data buffer or complete the operations.
@retval EFI_DEVICE_ERROR A hardware error occurs during reading from the Firmware Volume.
@retval EFI_ACCESS_DENIED The firmware volume containing the searched Firmware File is configured to disallow reads.
**/
EFI_STATUS
EFIAPI
GetSectionFromFfs (
IN EFI_SECTION_TYPE SectionType,
IN UINTN SectionInstance,
OUT VOID **Buffer,
OUT UINTN *Size
)
{
return InternalGetSectionFromFv(
InternalImageHandleToFvHandle(gImageHandle),
&gEfiCallerIdGuid,
SectionType,
SectionInstance,
Buffer,
Size
);
}