Introduction

This module contains APIs to program and use the Flash module on the board like XSPI NOR Flash. See Flash for more details.

Data Structures
struct	Flash_Params
	Parameters passed during Flash_open() More...

struct	Flash_Fxns
	Driver implementation callbacks. More...

struct	Flash_Attrs
	Flash device attributes, these are filled by SysCfg based on the flash device that is selected. More...

struct	Flash_Config
	Flash driver configuration, these are filled by SysCfg based on the flash device that is selected. More...

Functions
void	Flash_Params_init (Flash_Params *params)
	Set default parameters in the Flash_Params structure. More...

Flash_Handle	Flash_open (uint32_t instanceId, Flash_Params *params)
	Open flash driver. More...

void	Flash_close (Flash_Handle handle)
	Close flash driver. More...

Flash_Handle	Flash_getHandle (uint32_t instanceId)
	Get handle to flash driver. More...

int32_t	Flash_read (Flash_Handle handle, uint32_t offset, uint8_t *buf, uint32_t len)
	Read data from flash. More...

int32_t	Flash_write (Flash_Handle handle, uint32_t offset, uint8_t *buf, uint32_t len)
	Write to flash. More...

int32_t	Flash_blkPageToOffset (Flash_Handle handle, uint32_t *offset, uint32_t block, uint32_t page)
	Utility API to convert (Block Num, Page Num) to offset in bytes. More...

int32_t	Flash_offsetToBlkPage (Flash_Handle handle, uint32_t offset, uint32_t block, uint32_t page)
	Utility API to convert offset in bytes to (Block Num, Page Num) More...

int32_t	Flash_eraseBlk (Flash_Handle handle, uint32_t blockNum)
	Erase a block from flash. More...

uint32_t	Flash_getPhyTuningOffset (Flash_Handle handle)
	Return flash offset to write PHY tuning data. More...

Flash_Attrs *	Flash_getAttrs (uint32_t instanceId)
	Return flash attributes. More...

Typedefs
typedef void *	Flash_Handle
	Handle to the FLash driver returned by Flash_opem() More...

typedef struct Flash_Config_s	Flash_Config
	Forward declaration of Flash_Config. More...

typedef struct Flash_Params_s	Flash_Params
	Forward declaration of Flash_Params. More...

Flash driver implementation callbacks
typedef int32_t(*	Flash_OpenFxn) (Flash_Config config, Flash_Params params)
	Driver implementation to open a specific flash driver. More...

typedef void(*	Flash_CloseFxn) (Flash_Config *config)
	Driver implementation to close a specific flash driver. More...

typedef int32_t(*	Flash_ReadFxn) (Flash_Config config, uint32_t offset, uint8_t buf, uint32_t len)
	Driver implementation to read from flash using a specific flash driver. More...

typedef int32_t(*	Flash_WriteFxn) (Flash_Config config, uint32_t offset, uint8_t buf, uint32_t len)
	Driver implementation to write to flash using specific flash driver. More...

typedef int32_t(*	Flash_EraseFxn) (Flash_Config *config, uint32_t blockNum)
	Driver implementation to erase a block using a specific flash driver. More...

Typedef Documentation

◆ Flash_Handle

typedef void* Flash_Handle

Handle to the FLash driver returned by Flash_opem()

◆ Flash_Config

typedef struct Flash_Config_s Flash_Config

Forward declaration of Flash_Config.

◆ Flash_Params

typedef struct Flash_Params_s Flash_Params

Forward declaration of Flash_Params.

◆ Flash_OpenFxn

typedef int32_t(* Flash_OpenFxn) (Flash_Config *config, Flash_Params *params)

Driver implementation to open a specific flash driver.

Typically this callback is hidden from the end application and is implemented when a new type of flash device needs to be implemented.

Parameters

config	[in] Flash configuration for the specific flash device
params	[in] User controllable parameters when opening the flash device

Returns: SystemP_SUCCESS on success, else failure

◆ Flash_CloseFxn

typedef void(* Flash_CloseFxn) (Flash_Config *config)

Driver implementation to close a specific flash driver.

Typically this callback is hidden from the end application and is implemented when a new type of flash device needs to be implemented.

Parameters

config [in] Flash configuration for the specific flash device

Returns: SystemP_SUCCESS on success, else failure

◆ Flash_ReadFxn

typedef int32_t(* Flash_ReadFxn) (Flash_Config *config, uint32_t offset, uint8_t *buf, uint32_t len)

Driver implementation to read from flash using a specific flash driver.

Typically this callback is hidden from the end application and is implemented when a new type of flash device needs to be implemented.

Parameters

config	[in] Flash configuration for the specific flash device
offset	[in] Offset in the flash from where to start the read
buf	[in] Buffer into which to read the data into
len	[in] Length of the data to read, in bytes

Returns: SystemP_SUCCESS on success, else failure

◆ Flash_WriteFxn

typedef int32_t(* Flash_WriteFxn) (Flash_Config *config, uint32_t offset, uint8_t *buf, uint32_t len)

Driver implementation to write to flash using specific flash driver.

Typically this callback is hidden from the end application and is implemented when a new type of flash device needs to be implemented.

Parameters

config	[in] Flash configuration for the specific flash device
offset	[in] Offset in the flash from where to start the write.
buf	[in] Buffer which has the data to write.
len	[in] Length of the data to write, in bytes

Returns: SystemP_SUCCESS on success, else failure

◆ Flash_EraseFxn

typedef int32_t(* Flash_EraseFxn) (Flash_Config *config, uint32_t blockNum)

Driver implementation to erase a block using a specific flash driver.

Typically this callback is hidden from the end application and is implemented when a new type of flash device needs to be implemented.

Parameters

config	[in] Flash configuration for the specific flash device
blockNum	[in] Block number to erase.

Returns: SystemP_SUCCESS on success, else failure

Function Documentation

◆ Flash_Params_init()

void Flash_Params_init ( Flash_Params * params )

Set default parameters in the Flash_Params structure.

Call this API to set defaults and then override the fields as needed before calling Flash_open.

Parameters

params [out] Initialized parameters

◆ Flash_open()

Flash_Handle Flash_open	(	uint32_t	instanceId,
		Flash_Params *	params
	)

Open flash driver.

Make sure the SOC peripheral driver is opened before calling this API. Drivers_open function generated by SysCfg opens the underlying SOC peripheral driver, e.g OSPI.

Internally this API also reads the device and manufacture ID and checks if it matches the expected value for the flash device, if there is mismatch then NULL is returned.

Global variables Flash_Config gFlashConfig[] and uint32_t gFlashConfigNum is instantiated by SysCfg to describe the flash configuration based on user selection in SysCfg.

Parameters

instanceId	[in] Index within `Flash_Config gFlashConfig[]` denoting the flash driver to open
params	[in] Open parameters

Returns: Handle to flash driver which should be used in subsequent API call; NULL in case of failure

◆ Flash_close()

void Flash_close ( Flash_Handle handle )

Close flash driver.

Parameters

handle [in] Flash driver handle from Flash_open

◆ Flash_getHandle()

Flash_Handle Flash_getHandle ( uint32_t instanceId )

Get handle to flash driver.

Parameters

instanceId [in] Index within Flash_Config gFlashConfig[]

Returns: Handle to flash driver; NULL in case of failure

◆ Flash_read()

int32_t Flash_read	(	Flash_Handle	handle,
		uint32_t	offset,
		uint8_t *	buf,
		uint32_t	len
	)

Read data from flash.

Internally it will use DMA and do the needed cache sync operations as needed.

Parameters

handle	[in] Flash driver handle from Flash_open
offset	[in] Offset in the flash from where to start the read
buf	[in] Buffer into which to read the data into
len	[in] Length of the data to read, in bytes

Returns: SystemP_SUCCESS on success, else failure

◆ Flash_write()

int32_t Flash_write	(	Flash_Handle	handle,
		uint32_t	offset,
		uint8_t *	buf,
		uint32_t	len
	)

Write to flash.

Make sure the block is erased before writing

Parameters

handle	[in] Flash driver handle from Flash_open
offset	[in] Offset in the flash from where to start the write.
buf	[in] Buffer which has the data to write.
len	[in] Length of the data to write, in bytes

Returns: SystemP_SUCCESS on success, else failure

◆ Flash_blkPageToOffset()

int32_t Flash_blkPageToOffset	(	Flash_Handle	handle,
		uint32_t *	offset,
		uint32_t	block,
		uint32_t	page
	)

Utility API to convert (Block Num, Page Num) to offset in bytes.

Parameters

handle	[in] Flash driver handle from Flash_open
offset	[out] Offset in the flash, in bytes.
block	[in] Block number to convert
page	[in] Page number within the block

Returns: SystemP_SUCCESS on success, else failure

◆ Flash_offsetToBlkPage()

int32_t Flash_offsetToBlkPage	(	Flash_Handle	handle,
		uint32_t	offset,
		uint32_t *	block,
		uint32_t *	page
	)

Utility API to convert offset in bytes to (Block Num, Page Num)

Parameters

handle	[in] Flash driver handle from Flash_open
offset	[in] Offset in the flash, in bytes. MUST be page size aligned.
block	[out] Converted Block number
page	[out] Converted Page number within the block

Returns: SystemP_SUCCESS on success, else failure

◆ Flash_eraseBlk()

int32_t Flash_eraseBlk	(	Flash_Handle	handle,
		uint32_t	blockNum
	)

Erase a block from flash.

Use the utility API Flash_offsetToBlkPage to convert a offset to block number

Parameters

handle	[in] Flash driver handle from Flash_open
blockNum	[in] Block number to erase.

Returns: SystemP_SUCCESS on success, else failure

◆ Flash_getPhyTuningOffset()

uint32_t Flash_getPhyTuningOffset ( Flash_Handle handle )

Return flash offset to write PHY tuning data.

Parameters

handle [in] Flash driver handle from Flash_open

Returns: Tuning offset on SUCCESS, else 0xFFFFFFFF if handle is invalid

◆ Flash_getAttrs()

Flash_Attrs* Flash_getAttrs ( uint32_t instanceId )

Return flash attributes.

Parameters

instanceId [in] Flash instance ID

Returns: Flash_Attrs, else NULL if instanceId is invalid

Introduction

Data Structures

Functions

Typedefs

Flash driver implementation callbacks

Typedef Documentation

◆ Flash_Handle

◆ Flash_Config

◆ Flash_Params

◆ Flash_OpenFxn

◆ Flash_CloseFxn

◆ Flash_ReadFxn

◆ Flash_WriteFxn

◆ Flash_EraseFxn

Function Documentation

◆ Flash_Params_init()

◆ Flash_open()

◆ Flash_close()

◆ Flash_getHandle()

◆ Flash_read()

◆ Flash_write()

◆ Flash_blkPageToOffset()

◆ Flash_offsetToBlkPage()

◆ Flash_eraseBlk()

◆ Flash_getPhyTuningOffset()

◆ Flash_getAttrs()