mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-27 12:15:19 +01:00
136 lines
6.2 KiB
C
136 lines
6.2 KiB
C
/** @file
|
|
If a GUID-defined section is encountered when doing section
|
|
extraction, the section extraction driver calls the appropriate
|
|
instance of the GUIDed Section Extraction Protocol to extract
|
|
the section stream contained therein.
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
@par Revision Reference: PI
|
|
Version 1.00.
|
|
|
|
**/
|
|
|
|
#ifndef __GUID_SECTION_EXTRACTION_PROTOCOL_H__
|
|
#define __GUID_SECTION_EXTRACTION_PROTOCOL_H__
|
|
|
|
//
|
|
// The protocol interface structures are identified by associating
|
|
// them with a GUID. Each instance of a protocol with a given
|
|
// GUID must have the same interface structure. While all instances
|
|
// of the GUIDed Section Extraction Protocol must have the same
|
|
// interface structure, they do not all have the same GUID. The
|
|
// GUID that is associated with an instance of the GUIDed Section
|
|
// Extraction Protocol is used to correlate it with the GUIDed
|
|
// section type that it is intended to process.
|
|
//
|
|
|
|
typedef struct _EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL;
|
|
|
|
|
|
/**
|
|
The ExtractSection() function processes the input section and
|
|
allocates a buffer from the pool in which it returns the section
|
|
contents. If the section being extracted contains
|
|
authentication information (the section's
|
|
GuidedSectionHeader.Attributes field has the
|
|
EFI_GUIDED_SECTION_AUTH_STATUS_VALID bit set), the values
|
|
returned in AuthenticationStatus must reflect the results of
|
|
the authentication operation. Depending on the algorithm and
|
|
size of the encapsulated data, the time that is required to do
|
|
a full authentication may be prohibitively long for some
|
|
classes of systems. To indicate this, use
|
|
EFI_SECURITY_POLICY_PROTOCOL_GUID, which may be published by
|
|
the security policy driver (see the Platform Initialization
|
|
Driver Execution Environment Core Interface Specification for
|
|
more details and the GUID definition). If the
|
|
EFI_SECURITY_POLICY_PROTOCOL_GUID exists in the handle
|
|
database, then, if possible, full authentication should be
|
|
skipped and the section contents simply returned in the
|
|
OutputBuffer. In this case, the
|
|
EFI_AUTH_STATUS_PLATFORM_OVERRIDE bit AuthenticationStatus
|
|
must be set on return. ExtractSection() is callable only from
|
|
TPL_NOTIFY and below. Behavior of ExtractSection() at any
|
|
EFI_TPL above TPL_NOTIFY is undefined. Type EFI_TPL is
|
|
defined in RaiseTPL() in the UEFI 2.0 specification.
|
|
|
|
|
|
@param This Indicates the EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL instance.
|
|
|
|
@param InputSection Buffer containing the input GUIDed section
|
|
to be processed. OutputBuffer OutputBuffer
|
|
is allocated from boot services pool
|
|
memory and contains the new section
|
|
stream. The caller is responsible for
|
|
freeing this buffer.
|
|
|
|
@param OutputSize A pointer to a caller-allocated UINTN in
|
|
which the size of OutputBuffer allocation
|
|
is stored. If the function returns
|
|
anything other than EFI_SUCCESS, the value
|
|
of OutputSize is undefined.
|
|
|
|
@param AuthenticationStatus A pointer to a caller-allocated
|
|
UINT32 that indicates the
|
|
authentication status of the
|
|
output buffer. If the input
|
|
section's
|
|
GuidedSectionHeader.Attributes
|
|
field has the
|
|
EFI_GUIDED_SECTION_AUTH_STATUS_VAL
|
|
bit as clear, AuthenticationStatus
|
|
must return zero. Both local bits
|
|
(19:16) and aggregate bits (3:0)
|
|
in AuthenticationStatus are
|
|
returned by ExtractSection().
|
|
These bits reflect the status of
|
|
the extraction operation. The bit
|
|
pattern in both regions must be
|
|
the same, as the local and
|
|
aggregate authentication statuses
|
|
have equivalent meaning at this
|
|
level. If the function returns
|
|
anything other than EFI_SUCCESS,
|
|
the value of AuthenticationStatus
|
|
is undefined.
|
|
|
|
@retval EFI_SUCCESS The InputSection was successfully
|
|
processed and the section contents were
|
|
returned.
|
|
|
|
@retval EFI_OUT_OF_RESOURCES The system has insufficient
|
|
resources to process the
|
|
request.
|
|
|
|
@retval EFI_INVALID_PARAMETER The GUID in InputSection does
|
|
not match this instance of the
|
|
GUIDed Section Extraction
|
|
Protocol.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_EXTRACT_GUIDED_SECTION)(
|
|
IN CONST EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL *This,
|
|
IN CONST VOID *InputSection,
|
|
OUT VOID **OutputBuffer,
|
|
OUT UINTN *OutputSize,
|
|
OUT UINT32 *AuthenticationStatus
|
|
);
|
|
|
|
|
|
///
|
|
/// Typically, protocol interface structures are identified by associating them with a GUID. Each
|
|
/// instance of a protocol with a given GUID must have the same interface structure. While all instances
|
|
/// of the GUIDed Section Extraction Protocol must have the same interface structure, they do not all
|
|
/// have the same GUID. The GUID that is associated with an instance of the GUIDed Section
|
|
/// Extraction Protocol is used to correlate it with the GUIDed section type that it is intended to process.
|
|
///
|
|
struct _EFI_GUIDED_SECTION_EXTRACTION_PROTOCOL {
|
|
EFI_EXTRACT_GUIDED_SECTION ExtractSection;
|
|
};
|
|
|
|
|
|
#endif
|