mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-14 10:05:43 +01:00
89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/** @file
|
|
SMM CPU I/O protocol as defined in the Intel Framework specification.
|
|
|
|
This protocol provides CPU I/O and memory access within SMM.
|
|
|
|
Copyright (c) 2009 - 2010, 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 that 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.
|
|
|
|
**/
|
|
|
|
#ifndef _SMM_CPU_IO_H_
|
|
#define _SMM_CPU_IO_H_
|
|
|
|
#include <Protocol/SmmCpuIo2.h>
|
|
|
|
#define EFI_SMM_CPU_IO_GUID \
|
|
{ \
|
|
0x5f439a0b, 0x45d8, 0x4682, {0xa4, 0xf4, 0xf0, 0x57, 0x6b, 0x51, 0x34, 0x41} \
|
|
}
|
|
|
|
typedef struct _EFI_SMM_CPU_IO_INTERFACE EFI_SMM_CPU_IO_INTERFACE;
|
|
|
|
/**
|
|
Provides the basic memory and I/O interfaces used to abstract accesses to devices.
|
|
|
|
The I/O operations are carried out exactly as requested. The caller is
|
|
responsible for any alignment and I/O width issues that the bus, device,
|
|
platform, or type of I/O might require.
|
|
|
|
@param[in] This The EFI_SMM_CPU_IO_INTERFACE instance.
|
|
@param[in] Width Signifies the width of the I/O operations.
|
|
@param[in] Address The base address of the I/O operations. The caller is
|
|
responsible for aligning the Address, if required.
|
|
@param[in] Count The number of I/O operations to perform.
|
|
@param[in,out] Buffer For read operations, the destination buffer to store
|
|
the results. For write operations, the source buffer
|
|
from which to write data.
|
|
|
|
@retval EFI_SUCCESS The data was read from or written to the device.
|
|
@retval EFI_UNSUPPORTED The Address is not valid for this system.
|
|
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
|
|
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
|
|
of resources.
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_SMM_CPU_IO)(
|
|
IN EFI_SMM_CPU_IO_INTERFACE *This,
|
|
IN EFI_SMM_IO_WIDTH Width,
|
|
IN UINT64 Address,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
);
|
|
|
|
typedef struct {
|
|
///
|
|
/// This service provides the various modalities of memory and I/O read.
|
|
///
|
|
EFI_SMM_CPU_IO Read;
|
|
///
|
|
/// This service provides the various modalities of memory and I/O write.
|
|
///
|
|
EFI_SMM_CPU_IO Write;
|
|
} EFI_SMM_IO_ACCESS;
|
|
|
|
///
|
|
/// SMM CPU I/O Protocol provides CPU I/O and memory access within SMM.
|
|
///
|
|
struct _EFI_SMM_CPU_IO_INTERFACE {
|
|
///
|
|
/// Allows reads and writes to memory-mapped I/O space.
|
|
///
|
|
EFI_SMM_IO_ACCESS Mem;
|
|
///
|
|
/// Allows reads and writes to I/O space.
|
|
///
|
|
EFI_SMM_IO_ACCESS Io;
|
|
};
|
|
|
|
extern EFI_GUID gEfiSmmCpuIoGuid;
|
|
|
|
#endif
|