Overview

This file contains a design example using the OSPIPSV driver (xospipsv) The example writes to flash in IO mode and reads it back in DMA mode.

It runs in polled mode. The hardware which this example runs on, must have an octal serial Flash (Micron) for it to run.

This example has been tested with the Micron Octal Serial Flash (mt35xu01gbba).

Note

None.

 MODIFICATION HISTORY:

Ver Who Date Changes

1.0 nsk 02/19/17 First release sk 01/09/19 Updated flash configuration table with supported commands. sk 02/04/19 Add support for SDR+PHY and DDR+PHY modes. 1.0 akm 03/29/19 Fixed data alignment issues on IAR compiler. 1.1 sk 07/23/19 Based on RX Tuning, updated the dummy cycles. sk 08/08/19 Issue device reset to bring back to default state. 1.3 sk 05/27/20 Added Stacked mode support. 1.4 sk 02/18/21 Added support for Macronix flash and DualByte commands. 1.7 sk 06/28/22 Added Block Protection test for Micron flash. 1.9 sb 06/06/23 Added support for system device-tree flow.

Functions
int	OspiPsvPolledFlashExample (XOspiPsv *OspiPsvInstancePtr, u16 OspiPsvDeviceId)
	The purpose of this function is to illustrate how to use the XOspiPsv device driver using OSPI flash devices greater than or equal to 128Mb. More...

int	FlashReadID (XOspiPsv *OspiPsvPtr)
	Reads the flash ID and identifies the flash in FCT table. More...

int	FlashErase (XOspiPsv OspiPsvPtr, u32 Address, u32 ByteCount, u8 WriteBfrPtr)
	This function erases the sectors in the serial Flash connected to the OSPIPSV interface. More...

int	FlashIoWrite (XOspiPsv OspiPsvPtr, u32 Address, u32 ByteCount, u8 WriteBfrPtr)
	This function writes to the serial Flash connected to the OSPIPSV interface. More...

int	FlashLinearWrite (XOspiPsv OspiPsvPtr, u32 Address, u32 ByteCount, u8 WriteBfrPtr)
	This function writes to the serial Flash connected to the OSPIPSV interface. More...

int	FlashRead (XOspiPsv OspiPsvPtr, u32 Address, u32 ByteCount, u8 WriteBfrPtr, u8 *ReadBfrPtr)
	This function performs read. More...

u32	GetRealAddr (XOspiPsv *OspiPsvPtr, u32 Address)
	This functions translates the address based on the type of interconnection. More...

int	BulkErase (XOspiPsv OspiPsvPtr, u8 WriteBfrPtr)
	This functions performs a bulk erase operation when the flash device has a single die. More...

int	DieErase (XOspiPsv OspiPsvPtr, u8 WriteBfrPtr)
	This functions performs a die erase operation on all the die in the flash device. More...

int	FlashEnterExit4BAddMode (XOspiPsv *OspiPsvPtr, int Enable)
	This API enters the flash device into 4 bytes addressing mode. More...

int	FlashSetSDRDDRMode (XOspiPsv *OspiPsvPtr, int Mode)
	This API enters the flash device into Octal DDR mode or exit from octal DDR mode (switches to Extended SPI mode). More...

int	SetBlockProtect (XOspiPsv *OspiPsvPtr, u8 BlockProtectionVal, u8 IsBottom)
	This function set the Block Protect bits in the Status register of the device. More...

int	MicronBlockProtectTest (XOspiPsv *OspiPsvInstancePtr)
	This function test the Block Protect feature for Micron flash by enabling the write protect for the first sector. More...

int	main (void)
	Main function to call the OSPIPSV Flash Polled example. More...

u32	XOspiPsv_Get_Proto (XOspiPsv *OspiPsvInstancePtr, int Read)
	The purpose of this function is to determine the number of lines used for command, address and data. More...

Function Documentation

int BulkErase	(	XOspiPsv *	OspiPsvPtr,
		u8 *	WriteBfrPtr
	)

This functions performs a bulk erase operation when the flash device has a single die.

Works for both Spansion and Micron

Parameters

OspiPsvPtr	is a pointer to the OSPIPSV driver component to use.
WriteBfrPtr	is the pointer to command+address to be sent

Returns: XST_SUCCESS if successful, else XST_FAILURE.

Note: None.

int DieErase	(	XOspiPsv *	OspiPsvPtr,
		u8 *	WriteBfrPtr
	)

This functions performs a die erase operation on all the die in the flash device.

This function uses the die erase command for Micron 512Mbit and 1Gbit

Parameters

OspiPsvPtr	is a pointer to the OSPIPSV driver component to use.
WriteBfrPtr	is the pointer to command+address to be sent

Returns: XST_SUCCESS if successful, else XST_FAILURE.

Note: None.

int FlashEnterExit4BAddMode	(	XOspiPsv *	OspiPsvPtr,
		int	Enable
	)

This API enters the flash device into 4 bytes addressing mode.

As per the Micron spec, before issuing the command to enter into 4 byte addr mode, a write enable command is issued.

Parameters

OspiPsvPtr	is a pointer to the OSPIPSV driver component to use.
Enable	is a either 1 or 0 if 1 then enters 4 byte if 0 exits.

Returns

- XST_SUCCESS if successful.

XST_FAILURE if it fails.

int FlashErase	(	XOspiPsv *	OspiPsvPtr,
		u32	Address,
		u32	ByteCount,
		u8 *	WriteBfrPtr
	)

This function erases the sectors in the serial Flash connected to the OSPIPSV interface.

Parameters

OspiPsvPtr	is a pointer to the OSPIPSV driver component to use.
Address	contains the address of the first sector which needs to be erased.
ByteCount	contains the total size to be erased.
WriteBfrPtr	is Pointer to the write buffer (which is to be transmitted)

Returns: XST_SUCCESS if successful, else XST_FAILURE.

Note: None.

int FlashIoWrite	(	XOspiPsv *	OspiPsvPtr,
		u32	Address,
		u32	ByteCount,
		u8 *	WriteBfrPtr
	)

This function writes to the serial Flash connected to the OSPIPSV interface.

All the data put into the buffer must be in the same page of the device with page boundaries being on 256 byte boundaries. This can be used in IO or DMA mode.

Parameters

OspiPsvPtr	is a pointer to the OSPIPSV driver component to use.
Address	contains the address to write data to in the Flash.
ByteCount	contains the number of bytes to write.
WriteBfrPtr	is Pointer to the write buffer (which is to be transmitted)

Returns: XST_SUCCESS if successful, else XST_FAILURE.

Note: None.

int FlashLinearWrite	(	XOspiPsv *	OspiPsvPtr,
		u32	Address,
		u32	ByteCount,
		u8 *	WriteBfrPtr
	)

This function writes to the serial Flash connected to the OSPIPSV interface.

All the data put into the buffer must be in the same page of the device with page boundaries being on 256 byte boundaries. This can be used when controller is in Linear mode.

Parameters

OspiPsvPtr	is a pointer to the OSPIPSV driver component to use.
Address	contains the address to write data to in the Flash.
ByteCount	contains the number of bytes to write.
WriteBfrPtr	is Pointer to the write buffer (which is to be transmitted)

Returns: XST_SUCCESS if successful, else XST_FAILURE.

Note: None.

References XOspiPsv_Msg::Addr, XOspiPsv_Msg::Addrsize, XOspiPsv_Msg::Addrvalid, XOspiPsv_Msg::ByteCount, XOspiPsv::DualByteOpcodeEn, XOspiPsv_Msg::Dummy, XOspiPsv_Msg::ExtendedOpcode, XOspiPsv_Msg::Flags, XOspiPsv_Msg::IsDDROpCode, XOspiPsv_Msg::Opcode, XOspiPsv_Msg::Proto, XOspiPsv_Msg::RxBfrPtr, XOspiPsv::SdrDdrMode, XOspiPsv_Msg::TxBfrPtr, XOspiPsv_Get_Proto(), and XOspiPsv_PollTransfer().

Referenced by MicronBlockProtectTest(), OspiPsvFlashNonBlockingReadExample(), and OspiPsvPolledFlashExample().

int FlashRead	(	XOspiPsv *	OspiPsvPtr,
		u32	Address,
		u32	ByteCount,
		u8 *	WriteBfrPtr,
		u8 *	ReadBfrPtr
	)

This function performs read.

DMA is the default setting.

Parameters

OspiPsvPtr	is a pointer to the OSPIPSV driver component to use.
Address	contains the address of the first sector which needs to be erased.
ByteCount	contains the total size to be erased.
WriteBfrPtr	is Pointer to the write buffer which contains data to be transmitted
ReadBfrPtr	is Pointer to the read buffer to which valid received data should be written

Returns: XST_SUCCESS if successful, else XST_FAILURE.

Note: None.

int FlashReadID ( XOspiPsv * OspiPsvPtr )

Reads the flash ID and identifies the flash in FCT table.

Parameters

OspiPsvPtr is a pointer to the OSPIPSV driver component to use.

Returns: XST_SUCCESS if successful, else XST_FAILURE.

Note: None.

int FlashSetSDRDDRMode	(	XOspiPsv *	OspiPsvPtr,
		int	Mode
	)

This API enters the flash device into Octal DDR mode or exit from octal DDR mode (switches to Extended SPI mode).

Parameters

OspiPsvPtr	is a pointer to the OSPIPSV driver component to use.
Mode	is either 1 or 0 if 1 then enter octal DDR mode if 0 exits.

Returns

- XST_SUCCESS if successful.

XST_FAILURE if it fails.

u32 GetRealAddr	(	XOspiPsv *	OspiPsvPtr,
		u32	Address
	)

This functions translates the address based on the type of interconnection.

In case of stacked, this function asserts the corresponding slave select.

Parameters

OspiPsvPtr	is a pointer to the OSPIPSV driver component to use.
Address	which is to be accessed (for erase, write or read)

Returns: RealAddr is the translated address - for single it is unchanged; for stacked, the lower flash size is subtracted;

Note: In addition to get the actual address to work on flash this function also selects the CS based on the configuration detected.

int main ( void )

Main function to call the OSPIPSV Flash Polled example.

Returns: XST_SUCCESS if successful, otherwise XST_FAILURE.

Note: None

References OspiPsvPolledFlashExample().

int MicronBlockProtectTest ( XOspiPsv * OspiPsvInstancePtr )

This function test the Block Protect feature for Micron flash by enabling the write protect for the first sector.

Parameters

OspiPsvPtr is a pointer to the OSPIPSV driver component to use

Returns: XST_SUCCESS or XST_FAILURE.

Note: This function is tested with the Micron device(MT35XU02G).

References FlashErase(), FlashIoWrite(), FlashLinearWrite(), FlashRead(), SetBlockProtect(), XOSPIPSV_DAC_EN_OPTION, and XOspiPsv_GetOptions().

Referenced by OspiPsvPolledFlashExample().

int OspiPsvPolledFlashExample	(	XOspiPsv *	OspiPsvInstancePtr,
		u16	OspiPsvDeviceId
	)

The purpose of this function is to illustrate how to use the XOspiPsv device driver using OSPI flash devices greater than or equal to 128Mb.

This function reads data in either DMA or DAC mode.

Parameters

OspiPsvInstancePtr	is a pointer to the OSPIPSV driver component to use.
OspiPsvDeviceId	is the Device ID of the OSpi Device and is the XPAR_<OSPI_instance>_DEVICE_ID value from xparameters.h.

Returns: XST_SUCCESS if successful, else XST_FAILURE.

Note: None.

References XOspiPsv::Config, XOspiPsv_Config::ConnectionMode, FlashEnterExit4BAddMode(), FlashErase(), FlashIoWrite(), FlashLinearWrite(), FlashRead(), FlashReadID(), FlashSetSDRDDRMode(), MicronBlockProtectTest(), XOspiPsv_CfgInitialize(), XOSPIPSV_DAC_EN_OPTION, XOspiPsv_DeviceReset(), XOspiPsv_GetOptions(), XOSPIPSV_HWPIN_RESET, XOspiPsv_LookupConfig(), XOSPIPSV_SELECT_FLASH_CS0, XOspiPsv_SelectFlash(), XOspiPsv_SetClkPrescaler(), XOspiPsv_SetOptions(), and XOspiPsv_SetSdrDdrMode().

Referenced by main().

int SetBlockProtect	(	XOspiPsv *	OspiPsvPtr,
		u8	BlockProtectionVal,
		u8	IsBottom
	)

This function set the Block Protect bits in the Status register of the device.

User has to pass the BP bits[3:0] value as an argument to this function. This function reads the status register and set the corresponding BP bits as requested by the user and write back the status register.

Parameters

OspiPsvPtr	is a pointer to the OSPIPSV driver component to use.
BlockProtectionVal	Block protection bits value (4-bit value).
IsBottom	Indicates whether the protected memory area defined by the block protect bits starts from the top or bottom of the memory.

Returns: XST_SUCCESS or XST_FAILURE.

Note: This function is tested with the Micron device(MT35XU02G).

References XOspiPsv_Msg::Addr, XOspiPsv_Msg::Addrsize, XOspiPsv_Msg::Addrvalid, XOspiPsv_Msg::ByteCount, XOspiPsv::DualByteOpcodeEn, XOspiPsv_Msg::Dummy, XOspiPsv_Msg::ExtendedOpcode, XOspiPsv::Extra_DummyCycle, XOspiPsv_Msg::Flags, XOspiPsv_Msg::IsDDROpCode, XOspiPsv_Msg::Opcode, XOspiPsv_Msg::Proto, XOspiPsv_Msg::RxBfrPtr, XOspiPsv::SdrDdrMode, XOspiPsv_Msg::TxBfrPtr, XOSPIPSV_MSG_FLAG_RX, and XOspiPsv_PollTransfer().

Referenced by MicronBlockProtectTest().

u32 XOspiPsv_Get_Proto	(	XOspiPsv *	OspiPsvInstancePtr,
		int	Read
	)

The purpose of this function is to determine the number of lines used for command, address and data.

Parameters

OspiPsvInstancePtr	is a pointer to the OSPIPSV driver component to use.
Read	is to tell whether a read or write

Returns: returns value to program the lines for command, address and data.

Note: None.

References XOspiPsv::OpMode, XOSPIPSV_IDAC_MODE, and XOSPIPSV_READ_1_1_1.

Overview

Functions

Function Documentation