mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-24 11:45:27 +01:00
117 lines
5.2 KiB
C
117 lines
5.2 KiB
C
/** @file
|
|
The Decompress Protocol Interface as defined in UEFI spec
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#ifndef __DECOMPRESS_H__
|
|
#define __DECOMPRESS_H__
|
|
|
|
#define EFI_DECOMPRESS_PROTOCOL_GUID \
|
|
{ \
|
|
0xd8117cfe, 0x94a6, 0x11d4, {0x9a, 0x3a, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \
|
|
}
|
|
|
|
typedef struct _EFI_DECOMPRESS_PROTOCOL EFI_DECOMPRESS_PROTOCOL;
|
|
|
|
/**
|
|
The GetInfo() function retrieves the size of the uncompressed buffer
|
|
and the temporary scratch buffer required to decompress the buffer
|
|
specified by Source and SourceSize. If the size of the uncompressed
|
|
buffer or the size of the scratch buffer cannot be determined from
|
|
the compressed data specified by Source and SourceData, then
|
|
EFI_INVALID_PARAMETER is returned. Otherwise, the size of the uncompressed
|
|
buffer is returned in DestinationSize, the size of the scratch buffer is
|
|
returned in ScratchSize, and EFI_SUCCESS is returned.
|
|
|
|
The GetInfo() function does not have a scratch buffer available to perform
|
|
a thorough checking of the validity of the source data. It just retrieves
|
|
the 'Original Size' field from the beginning bytes of the source data and
|
|
output it as DestinationSize. And ScratchSize is specific to the decompression
|
|
implementation.
|
|
|
|
@param This A pointer to the EFI_DECOMPRESS_PROTOCOL instance.
|
|
@param Source The source buffer containing the compressed data.
|
|
@param SourceSize The size, in bytes, of source buffer.
|
|
@param DestinationSize A pointer to the size, in bytes, of the uncompressed buffer
|
|
that will be generated when the compressed buffer specified
|
|
by Source and SourceSize is decompressed.
|
|
@param ScratchSize A pointer to the size, in bytes, of the scratch buffer that
|
|
is required to decompress the compressed buffer specified by
|
|
Source and SourceSize.
|
|
|
|
@retval EFI_SUCCESS The size of the uncompressed data was returned in DestinationSize
|
|
and the size of the scratch buffer was returned in ScratchSize.
|
|
@retval EFI_INVALID_PARAMETER The size of the uncompressed data or the size of the scratch
|
|
buffer cannot be determined from the compressed data specified by
|
|
Source and SourceData.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_DECOMPRESS_GET_INFO)(
|
|
IN EFI_DECOMPRESS_PROTOCOL *This,
|
|
IN VOID *Source,
|
|
IN UINT32 SourceSize,
|
|
OUT UINT32 *DestinationSize,
|
|
OUT UINT32 *ScratchSize
|
|
);
|
|
|
|
/**
|
|
The Decompress() function extracts decompressed data to its original form.
|
|
|
|
This protocol is designed so that the decompression algorithm can be
|
|
implemented without using any memory services. As a result, the
|
|
Decompress() function is not allowed to call AllocatePool() or
|
|
AllocatePages() in its implementation. It is the caller's responsibility
|
|
to allocate and free the Destination and Scratch buffers.
|
|
|
|
If the compressed source data specified by Source and SourceSize is
|
|
successfully decompressed into Destination, then EFI_SUCCESS is returned.
|
|
If the compressed source data specified by Source and SourceSize is not in
|
|
a valid compressed data format, then EFI_INVALID_PARAMETER is returned.
|
|
|
|
@param This A pointer to the EFI_DECOMPRESS_PROTOCOL instance.
|
|
@param Source The source buffer containing the compressed data.
|
|
@param SourceSize The size of source data.
|
|
@param Destination On output, the destination buffer that contains
|
|
the uncompressed data.
|
|
@param DestinationSize The size of destination buffer. The size of destination
|
|
buffer needed is obtained from GetInfo().
|
|
@param Scratch A temporary scratch buffer that is used to perform the
|
|
decompression.
|
|
@param ScratchSize The size of scratch buffer. The size of scratch buffer needed
|
|
is obtained from GetInfo().
|
|
|
|
@retval EFI_SUCCESS Decompression completed successfully, and the uncompressed
|
|
buffer is returned in Destination.
|
|
@retval EFI_INVALID_PARAMETER The source buffer specified by Source and SourceSize is
|
|
corrupted (not in a valid compressed format).
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_DECOMPRESS_DECOMPRESS)(
|
|
IN EFI_DECOMPRESS_PROTOCOL *This,
|
|
IN VOID *Source,
|
|
IN UINT32 SourceSize,
|
|
IN OUT VOID *Destination,
|
|
IN UINT32 DestinationSize,
|
|
IN OUT VOID *Scratch,
|
|
IN UINT32 ScratchSize
|
|
);
|
|
|
|
///
|
|
/// Provides a decompression service.
|
|
///
|
|
struct _EFI_DECOMPRESS_PROTOCOL {
|
|
EFI_DECOMPRESS_GET_INFO GetInfo;
|
|
EFI_DECOMPRESS_DECOMPRESS Decompress;
|
|
};
|
|
|
|
extern EFI_GUID gEfiDecompressProtocolGuid;
|
|
|
|
#endif
|