/** @file
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Ram flash device for EFI variable
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Copyright (c) 2019, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef RAM_FLASH_H_
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#define RAM_FLASH_H_
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#include <Protocol/FirmwareVolumeBlock.h>
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extern VOID *mFlashBase;
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/**
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Read from Ram Flash
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@param[in] Lba The starting logical block index to read from.
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@param[in] Offset Offset into the block at which to begin reading.
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@param[in] NumBytes On input, indicates the requested read size. On
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output, indicates the actual number of bytes read
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@param[in] Buffer Pointer to the buffer to read into.
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**/
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EFI_STATUS
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RamFlashRead (
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IN EFI_LBA Lba,
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IN UINTN Offset,
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IN UINTN *NumBytes,
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IN UINT8 *Buffer
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);
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/**
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Write to Ram Flash
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@param[in] Lba The starting logical block index to write to.
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@param[in] Offset Offset into the block at which to begin writing.
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@param[in] NumBytes On input, indicates the requested write size. On
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output, indicates the actual number of bytes written
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@param[in] Buffer Pointer to the data to write.
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**/
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EFI_STATUS
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RamFlashWrite (
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IN EFI_LBA Lba,
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IN UINTN Offset,
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IN UINTN *NumBytes,
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IN UINT8 *Buffer
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);
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/**
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Erase a Ram Flash block
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@param Lba The logical block index to erase.
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**/
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EFI_STATUS
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RamFlashEraseBlock (
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IN EFI_LBA Lba
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);
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/**
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Initializes Ram flash memory support
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@retval EFI_WRITE_PROTECTED The Ram flash device is not present.
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@retval EFI_SUCCESS The Ram flash device is supported.
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**/
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EFI_STATUS
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RamFlashInitialize (
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VOID
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);
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VOID
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RamFlashConvertPointers (
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VOID
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);
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#endif
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