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/** @file
PCH SPI Common Driver implements the SPI Host Controller Compatibility Interface.
Copyright (c) 2017 - 2021, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef SPI_FLASH_LIB_H_
#define SPI_FLASH_LIB_H_
/**
Flash Region Type
**/
typedef enum {
FlashRegionDescriptor,
FlashRegionBios,
FlashRegionMe,
FlashRegionGbE,
FlashRegionPlatformData,
FlashRegionDer,
FlashRegionAll,
FlashRegionMax
} FLASH_REGION_TYPE;
/**
Read SFDP data from the flash part.
@param[in] ComponentNumber The Component Number for chip select
@param[in] ByteCount Number of bytes in SFDP data portion of the SPI cycle, the max number is 64
@param[out] SfdpData The Pointer to caller-allocated buffer containing the SFDP data received
It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashReadSfdp (
IN UINT8 ComponentNumber,
IN UINT32 ByteCount,
OUT UINT8 *SfdpData
);
/**
Read Jedec Id from the flash part.
@param[in] ComponentNumber The Component Number for chip select
@param[in] ByteCount Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
@param[out] JedecId The Pointer to caller-allocated buffer containing JEDEC ID received
It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashReadJedecId (
IN UINT8 ComponentNumber,
IN UINT32 ByteCount,
OUT UINT8 *JedecId
);
/**
Write the status register in the flash part.
@param[in] ByteCount Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
@param[in] StatusValue The Pointer to caller-allocated buffer containing the value of Status register writing
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashWriteStatus (
IN UINT32 ByteCount,
IN UINT8 *StatusValue
);
/**
Read status register in the flash part.
@param[in] ByteCount Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
@param[out] StatusValue The Pointer to caller-allocated buffer containing the value of Status register received.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashReadStatus (
IN UINT32 ByteCount,
OUT UINT8 *StatusValue
);
/**
Read SC Soft Strap Values
@param[in] SoftStrapAddr SC Soft Strap address offset from FPSBA.
@param[in] ByteCount Number of bytes in SoftStrap data portion of the SPI cycle
@param[out] SoftStrapValue The Pointer to caller-allocated buffer containing SC Soft Strap Value.
It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiReadPchSoftStrap (
IN UINT32 SoftStrapAddr,
IN UINT32 ByteCount,
OUT UINT8 *SoftStrapValue
);
/**
Read data from the flash part.
@param[in] FlashRegionType The Flash Region type for flash cycle which is listed in the Descriptor.
@param[in] Address The Flash Linear Address must fall within a region for which BIOS has access permissions.
@param[in] ByteCount Number of bytes in the data portion of the SPI cycle.
@param[out] Buffer The Pointer to caller-allocated buffer containing the dada received.
It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashRead (
IN FLASH_REGION_TYPE FlashRegionType,
IN UINT32 Address,
IN UINT32 ByteCount,
OUT UINT8 *Buffer
);
/**
Erase some area on the flash part.
@param[in] FlashRegionType The Flash Region type for flash cycle which is listed in the Descriptor.
@param[in] Address The Flash Linear Address must fall within a region for which BIOS has access permissions.
@param[in] ByteCount Number of bytes in the data portion of the SPI cycle.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashErase (
IN FLASH_REGION_TYPE FlashRegionType,
IN UINT32 Address,
IN UINT32 ByteCount
);
/**
Write data to the flash part.
@param[in] FlashRegionType The Flash Region type for flash cycle which is listed in the Descriptor.
@param[in] Address The Flash Linear Address must fall within a region for which BIOS has access permissions.
@param[in] ByteCount Number of bytes in the data portion of the SPI cycle.
@param[in] Buffer Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashWrite (
IN FLASH_REGION_TYPE FlashRegionType,
IN UINT32 Address,
IN UINT32 ByteCount,
IN UINT8 *Buffer
);
/**
Initialize an SPI library.
@retval EFI_SUCCESS The protocol instance was properly initialized
@retval EFI_NOT_FOUND The expected SPI info could not be found
**/
EFI_STATUS
EFIAPI
SpiConstructor (
VOID
);
/**
Get the SPI region base and size, based on the enum type
@param[in] FlashRegionType The Flash Region type for for the base address which is listed in the Descriptor.
@param[out] BaseAddress The Flash Linear Address for the Region 'n' Base
@param[out] RegionSize The size for the Region 'n'
@retval EFI_SUCCESS Read success
@retval EFI_INVALID_PARAMETER Invalid region type given
@retval EFI_DEVICE_ERROR The region is not used
**/
EFI_STATUS
EFIAPI
SpiGetRegionAddress (
IN FLASH_REGION_TYPE FlashRegionType,
OUT UINT32 *BaseAddress OPTIONAL,
OUT UINT32 *RegionSize OPTIONAL
);
#endif
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