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257 lines
8.2 KiB
C
257 lines
8.2 KiB
C
/** @file
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This file defines the SPI NOR Flash Protocol.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Revision Reference:
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This Protocol was introduced in UEFI PI Specification 1.6.
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**/
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#ifndef __SPI_NOR_FLASH_PROTOCOL_H__
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#define __SPI_NOR_FLASH_PROTOCOL_H__
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#include <Protocol/SpiConfiguration.h>
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///
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/// Global ID for the SPI NOR Flash Protocol
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///
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#define EFI_SPI_NOR_FLASH_PROTOCOL_GUID \
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{ 0xb57ec3fe, 0xf833, 0x4ba6, \
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{ 0x85, 0x78, 0x2a, 0x7d, 0x6a, 0x87, 0x44, 0x4b }}
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typedef struct _EFI_SPI_NOR_FLASH_PROTOCOL EFI_SPI_NOR_FLASH_PROTOCOL;
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/**
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Read the 3 byte manufacture and device ID from the SPI flash.
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This routine must be called at or below TPL_NOTIFY.
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This routine reads the 3 byte manufacture and device ID from the flash part
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filling the buffer provided.
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@param[in] This Pointer to an EFI_SPI_NOR_FLASH_PROTOCOL data structure.
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@param[out] Buffer Pointer to a 3 byte buffer to receive the manufacture and
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device ID.
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@retval EFI_SUCCESS The manufacture and device ID was read
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successfully.
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@retval EFI_INVALID_PARAMETER Buffer is NULL
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@retval EFI_DEVICE_ERROR Invalid data received from SPI flash part.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SPI_NOR_FLASH_PROTOCOL_GET_FLASH_ID) (
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IN CONST EFI_SPI_NOR_FLASH_PROTOCOL *This,
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OUT UINT8 *Buffer
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);
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/**
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Read data from the SPI flash.
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This routine must be called at or below TPL_NOTIFY.
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This routine reads data from the SPI part in the buffer provided.
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@param[in] This Pointer to an EFI_SPI_NOR_FLASH_PROTOCOL data
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structure.
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@param[in] FlashAddress Address in the flash to start reading
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@param[in] LengthInBytes Read length in bytes
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@param[out] Buffer Address of a buffer to receive the data
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@retval EFI_SUCCESS The data was read successfully.
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@retval EFI_INVALID_PARAMETER Buffer is NULL, or
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FlashAddress >= This->FlashSize, or
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LengthInBytes > This->FlashSize - FlashAddress
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SPI_NOR_FLASH_PROTOCOL_READ_DATA) (
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IN CONST EFI_SPI_NOR_FLASH_PROTOCOL *This,
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IN UINT32 FlashAddress,
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IN UINT32 LengthInBytes,
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OUT UINT8 *Buffer
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);
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/**
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Read the flash status register.
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This routine must be called at or below TPL_NOTIFY.
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This routine reads the flash part status register.
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@param[in] This Pointer to an EFI_SPI_NOR_FLASH_PROTOCOL data
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structure.
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@param[in] LengthInBytes Number of status bytes to read.
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@param[out] FlashStatus Pointer to a buffer to receive the flash status.
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@retval EFI_SUCCESS The status register was read successfully.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SPI_NOR_FLASH_PROTOCOL_READ_STATUS) (
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IN CONST EFI_SPI_NOR_FLASH_PROTOCOL *This,
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IN UINT32 LengthInBytes,
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OUT UINT8 *FlashStatus
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);
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/**
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Write the flash status register.
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This routine must be called at or below TPL_N OTIFY.
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This routine writes the flash part status register.
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@param[in] This Pointer to an EFI_SPI_NOR_FLASH_PROTOCOL data
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structure.
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@param[in] LengthInBytes Number of status bytes to write.
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@param[in] FlashStatus Pointer to a buffer containing the new status.
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@retval EFI_SUCCESS The status write was successful.
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@retval EFI_OUT_OF_RESOURCES Failed to allocate the write buffer.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SPI_NOR_FLASH_PROTOCOL_WRITE_STATUS) (
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IN CONST EFI_SPI_NOR_FLASH_PROTOCOL *This,
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IN UINT32 LengthInBytes,
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IN UINT8 *FlashStatus
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);
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/**
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Write data to the SPI flash.
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This routine must be called at or below TPL_NOTIFY.
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This routine breaks up the write operation as necessary to write the data to
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the SPI part.
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@param[in] This Pointer to an EFI_SPI_NOR_FLASH_PROTOCOL data
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structure.
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@param[in] FlashAddress Address in the flash to start writing
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@param[in] LengthInBytes Write length in bytes
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@param[in] Buffer Address of a buffer containing the data
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@retval EFI_SUCCESS The data was written successfully.
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@retval EFI_INVALID_PARAMETER Buffer is NULL, or
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FlashAddress >= This->FlashSize, or
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LengthInBytes > This->FlashSize - FlashAddress
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@retval EFI_OUT_OF_RESOURCES Insufficient memory to copy buffer.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SPI_NOR_FLASH_PROTOCOL_WRITE_DATA) (
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IN CONST EFI_SPI_NOR_FLASH_PROTOCOL *This,
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IN UINT32 FlashAddress,
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IN UINT32 LengthInBytes,
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IN UINT8 *Buffer
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);
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/**
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Efficiently erases one or more 4KiB regions in the SPI flash.
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This routine must be called at or below TPL_NOTIFY.
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This routine uses a combination of 4 KiB and larger blocks to erase the
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specified area.
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@param[in] This Pointer to an EFI_SPI_NOR_FLASH_PROTOCOL data
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structure.
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@param[in] FlashAddress Address within a 4 KiB block to start erasing
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@param[in] BlockCount Number of 4 KiB blocks to erase
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@retval EFI_SUCCESS The erase was completed successfully.
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@retval EFI_INVALID_PARAMETER FlashAddress >= This->FlashSize, or
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BlockCount * 4 KiB
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> This->FlashSize - FlashAddress
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SPI_NOR_FLASH_PROTOCOL_ERASE) (
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IN CONST EFI_SPI_NOR_FLASH_PROTOCOL *This,
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IN UINT32 FlashAddress,
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IN UINT32 BlockCount
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);
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///
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/// The EFI_SPI_NOR_FLASH_PROTOCOL exists in the SPI peripheral layer.
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/// This protocol manipulates the SPI NOR flash parts using a common set of
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/// commands. The board layer provides the interconnection and configuration
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/// details for the SPI NOR flash part. The SPI NOR flash driver uses this
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/// configuration data to expose a generic interface which provides the
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/// following APls:
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/// * Read manufacture and device ID
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/// * Read data
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/// * Read data using low frequency
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/// * Read status
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/// * Write data
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/// * Erase 4 KiB blocks
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/// * Erase 32 or 64 KiB blocks
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/// * Write status
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/// The EFI_SPI_NOR_FLASH_PROTOCOL also exposes some APls to set the security
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/// features on the legacy SPI flash controller.
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///
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struct _EFI_SPI_NOR_FLASH_PROTOCOL {
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///
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/// Pointer to an EFI_SPI_PERIPHERAL data structure
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///
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CONST EFI_SPI_PERIPHERAL *SpiPeripheral;
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///
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/// Flash size in bytes
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///
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UINT32 FlashSize;
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///
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/// Manufacture and Device ID
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///
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UINT8 Deviceid[3];
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///
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/// Erase block size in bytes
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///
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UINT32 EraseBlockBytes;
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///
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/// Read the 3 byte manufacture and device ID from the SPI flash.
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///
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EFI_SPI_NOR_FLASH_PROTOCOL_GET_FLASH_ID GetFlashid;
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///
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/// Read data from the SPI flash.
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///
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EFI_SPI_NOR_FLASH_PROTOCOL_READ_DATA ReadData;
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///
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/// Low frequency read data from the SPI flash.
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///
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EFI_SPI_NOR_FLASH_PROTOCOL_READ_DATA LfReadData;
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///
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/// Read the flash status register.
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///
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EFI_SPI_NOR_FLASH_PROTOCOL_READ_STATUS ReadStatus;
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///
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/// Write the flash status register.
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///
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EFI_SPI_NOR_FLASH_PROTOCOL_WRITE_STATUS WriteStatus;
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///
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/// Write data to the SPI flash.
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///
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EFI_SPI_NOR_FLASH_PROTOCOL_WRITE_DATA WriteData;
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///
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/// Efficiently erases one or more 4KiB regions in the SPI flash.
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///
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EFI_SPI_NOR_FLASH_PROTOCOL_ERASE Erase;
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};
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extern EFI_GUID gEfiSpiNorFlashProtocolGuid;
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#endif // __SPI_NOR_FLASH_PROTOCOL_H__
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