1d66480aa4
This is a common SPI Flash library used for the Intel platform that supports SPI hardware sequence. This library provides actual SPI flash operation via Intel PCH SPI controller. Signed-off-by: Guo Dong <guo.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Maurice Ma <maurice.ma@intel.com> Cc: Benjamin You <benjamin.you@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Reviewed-by: Benjamin You <benjamin.you@intel.com>
216 lines
7.8 KiB
C
216 lines
7.8 KiB
C
/** @file
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PCH SPI Common Driver implements the SPI Host Controller Compatibility Interface.
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Copyright (c) 2017 - 2021, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef SPI_FLASH_LIB_H_
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#define SPI_FLASH_LIB_H_
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/**
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Flash Region Type
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**/
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typedef enum {
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FlashRegionDescriptor,
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FlashRegionBios,
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FlashRegionMe,
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FlashRegionGbE,
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FlashRegionPlatformData,
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FlashRegionDer,
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FlashRegionAll,
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FlashRegionMax
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} FLASH_REGION_TYPE;
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/**
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Read SFDP data from the flash part.
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@param[in] ComponentNumber The Component Number for chip select
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@param[in] ByteCount Number of bytes in SFDP data portion of the SPI cycle, the max number is 64
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@param[out] SfdpData The Pointer to caller-allocated buffer containing the SFDP data received
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It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
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@retval EFI_SUCCESS Command succeed.
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@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
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@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
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**/
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EFI_STATUS
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EFIAPI
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SpiFlashReadSfdp (
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IN UINT8 ComponentNumber,
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IN UINT32 ByteCount,
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OUT UINT8 *SfdpData
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);
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/**
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Read Jedec Id from the flash part.
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@param[in] ComponentNumber The Component Number for chip select
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@param[in] ByteCount Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
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@param[out] JedecId The Pointer to caller-allocated buffer containing JEDEC ID received
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It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
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@retval EFI_SUCCESS Command succeed.
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@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
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@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
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**/
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EFI_STATUS
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EFIAPI
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SpiFlashReadJedecId (
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IN UINT8 ComponentNumber,
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IN UINT32 ByteCount,
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OUT UINT8 *JedecId
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);
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/**
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Write the status register in the flash part.
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@param[in] ByteCount Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
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@param[in] StatusValue The Pointer to caller-allocated buffer containing the value of Status register writing
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@retval EFI_SUCCESS Command succeed.
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@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
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@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
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**/
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EFI_STATUS
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EFIAPI
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SpiFlashWriteStatus (
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IN UINT32 ByteCount,
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IN UINT8 *StatusValue
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);
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/**
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Read status register in the flash part.
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@param[in] ByteCount Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
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@param[out] StatusValue The Pointer to caller-allocated buffer containing the value of Status register received.
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@retval EFI_SUCCESS Command succeed.
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@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
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@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
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**/
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EFI_STATUS
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EFIAPI
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SpiFlashReadStatus (
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IN UINT32 ByteCount,
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OUT UINT8 *StatusValue
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);
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/**
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Read SC Soft Strap Values
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@param[in] SoftStrapAddr SC Soft Strap address offset from FPSBA.
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@param[in] ByteCount Number of bytes in SoftStrap data portion of the SPI cycle
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@param[out] SoftStrapValue The Pointer to caller-allocated buffer containing SC Soft Strap Value.
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It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
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@retval EFI_SUCCESS Command succeed.
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@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
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@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
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**/
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EFI_STATUS
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EFIAPI
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SpiReadPchSoftStrap (
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IN UINT32 SoftStrapAddr,
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IN UINT32 ByteCount,
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OUT UINT8 *SoftStrapValue
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);
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/**
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Read data from the flash part.
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@param[in] FlashRegionType The Flash Region type for flash cycle which is listed in the Descriptor.
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@param[in] Address The Flash Linear Address must fall within a region for which BIOS has access permissions.
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@param[in] ByteCount Number of bytes in the data portion of the SPI cycle.
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@param[out] Buffer The Pointer to caller-allocated buffer containing the dada received.
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It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
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@retval EFI_SUCCESS Command succeed.
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@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
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@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
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**/
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EFI_STATUS
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EFIAPI
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SpiFlashRead (
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IN FLASH_REGION_TYPE FlashRegionType,
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IN UINT32 Address,
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IN UINT32 ByteCount,
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OUT UINT8 *Buffer
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);
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/**
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Erase some area on the flash part.
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@param[in] FlashRegionType The Flash Region type for flash cycle which is listed in the Descriptor.
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@param[in] Address The Flash Linear Address must fall within a region for which BIOS has access permissions.
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@param[in] ByteCount Number of bytes in the data portion of the SPI cycle.
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@retval EFI_SUCCESS Command succeed.
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@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
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@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
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**/
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EFI_STATUS
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EFIAPI
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SpiFlashErase (
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IN FLASH_REGION_TYPE FlashRegionType,
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IN UINT32 Address,
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IN UINT32 ByteCount
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);
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/**
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Write data to the flash part.
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@param[in] FlashRegionType The Flash Region type for flash cycle which is listed in the Descriptor.
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@param[in] Address The Flash Linear Address must fall within a region for which BIOS has access permissions.
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@param[in] ByteCount Number of bytes in the data portion of the SPI cycle.
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@param[in] Buffer Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
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@retval EFI_SUCCESS Command succeed.
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@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
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@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
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**/
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EFI_STATUS
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EFIAPI
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SpiFlashWrite (
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IN FLASH_REGION_TYPE FlashRegionType,
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IN UINT32 Address,
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IN UINT32 ByteCount,
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IN UINT8 *Buffer
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);
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/**
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Initialize an SPI library.
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@retval EFI_SUCCESS The protocol instance was properly initialized
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@retval EFI_NOT_FOUND The expected SPI info could not be found
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**/
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EFI_STATUS
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EFIAPI
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SpiConstructor (
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VOID
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);
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/**
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Get the SPI region base and size, based on the enum type
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@param[in] FlashRegionType The Flash Region type for for the base address which is listed in the Descriptor.
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@param[out] BaseAddress The Flash Linear Address for the Region 'n' Base
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@param[out] RegionSize The size for the Region 'n'
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@retval EFI_SUCCESS Read success
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@retval EFI_INVALID_PARAMETER Invalid region type given
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@retval EFI_DEVICE_ERROR The region is not used
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**/
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EFI_STATUS
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EFIAPI
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SpiGetRegionAddress (
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IN FLASH_REGION_TYPE FlashRegionType,
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OUT UINT32 *BaseAddress, OPTIONAL
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OUT UINT32 *RegionSize OPTIONAL
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);
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#endif
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