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/** @file
Flash device library class header file.
Copyright (c) 2017 - 2021, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef FLASHDEVICE_LIB_H_
#define FLASHDEVICE_LIB_H_
/**
Read NumBytes bytes of data from the address specified by
PAddress into Buffer.
@param[in] PAddress The starting physical address of the read.
@param[in,out] NumBytes On input, the number of bytes to read. On output, the number
of bytes actually read.
@param[out] Buffer The destination data buffer for the read.
@retval EFI_SUCCESS. Opertion is successful.
@retval EFI_DEVICE_ERROR If there is any device errors.
**/
EFI_STATUS
EFIAPI
LibFvbFlashDeviceRead (
IN UINTN PAddress,
IN OUT UINTN *NumBytes,
OUT UINT8 *Buffer
);
/**
Write NumBytes bytes of data from Buffer to the address specified by
PAddresss.
@param[in] PAddress The starting physical address of the write.
@param[in,out] NumBytes On input, the number of bytes to write. On output,
the actual number of bytes written.
@param[in] Buffer The source data buffer for the write.
@retval EFI_SUCCESS. Opertion is successful.
@retval EFI_DEVICE_ERROR If there is any device errors.
**/
EFI_STATUS
EFIAPI
LibFvbFlashDeviceWrite (
IN UINTN PAddress,
IN OUT UINTN *NumBytes,
IN UINT8 *Buffer
);
/**
Erase the block starting at PAddress.
@param[in] PAddress The starting physical address of the region to be erased.
@param[in] LbaLength The length of the region to be erased. This parameter is necessary
as the physical block size on a flash device could be different than
the logical block size of Firmware Volume Block protocol. Erase on
flash chip is always performed block by block. Therefore, the ERASE
operation to a logical block is converted a number of ERASE operation
(or a partial erase) on the hardware.
@retval EFI_SUCCESS. Opertion is successful.
@retval EFI_DEVICE_ERROR If there is any device errors.
**/
EFI_STATUS
EFIAPI
LibFvbFlashDeviceBlockErase (
IN UINTN PAddress,
IN UINTN LbaLength
);
/**
Lock or unlock the block starting at PAddress.
@param[in] PAddress The starting physical address of region to be (un)locked.
@param[in] LbaLength The length of the region to be (un)locked. This parameter is necessary
as the physical block size on a flash device could be different than
the logical block size of Firmware Volume Block protocol. (Un)Lock on
flash chip is always performed block by block. Therefore, the (Un)Lock
operation to a logical block is converted a number of (Un)Lock operation
(or a partial erase) on the hardware.
@param[in] Lock TRUE to lock. FALSE to unlock.
@retval EFI_SUCCESS. Opertion is successful.
**/
EFI_STATUS
EFIAPI
LibFvbFlashDeviceBlockLock (
IN UINTN PAddress,
IN UINTN LbaLength,
IN BOOLEAN Lock
);
PHYSICAL_ADDRESS
EFIAPI
LibFvbFlashDeviceMemoryMap (
);
#endif
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