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mbed-os/storage/blockdevice/COMPONENT_SPINAND/include/SPINAND/SPINANDBlockDevice.h

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/* mbed Microcontroller Library
* Copyright (c) 2021 ARM Limited
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_SPINAND_BLOCK_DEVICE_H
#define MBED_SPINAND_BLOCK_DEVICE_H
#include "drivers/QSPI.h"
#include "blockdevice/BlockDevice.h"
#include "platform/Callback.h"
#ifndef MBED_CONF_SPINAND_QSPI_IO0
#define MBED_CONF_SPINAND_QSPI_IO0 NC
#endif
#ifndef MBED_CONF_SPINAND_QSPI_IO1
#define MBED_CONF_SPINAND_QSPI_IO1 NC
#endif
#ifndef MBED_CONF_SPINAND_QSPI_IO2
#define MBED_CONF_SPINAND_QSPI_IO2 NC
#endif
#ifndef MBED_CONF_SPINAND_QSPI_IO3
#define MBED_CONF_SPINAND_QSPI_IO3 NC
#endif
#ifndef MBED_CONF_SPINAND_QSPI_SCK
#define MBED_CONF_SPINAND_QSPI_SCK NC
#endif
#ifndef MBED_CONF_SPINAND_QSPI_CSN
#define MBED_CONF_SPINAND_QSPI_CSN NC
#endif
#ifndef MBED_CONF_SPINAND_QSPI_POLARITY_MODE
#define MBED_CONF_SPINAND_QSPI_POLARITY_MODE 0
#endif
#ifndef MBED_CONF_SPINAND_QSPI_FREQ
#define MBED_CONF_SPINAND_QSPI_FREQ 40000000
#endif
/** Enum spinand standard error codes
*
* @enum spinand_bd_error
*/
enum spinand_bd_error {
SPINAND_BD_ERROR_OK = 0, /*!< no error */
SPINAND_BD_ERROR_DEVICE_ERROR = BD_ERROR_DEVICE_ERROR, /*!< device specific error -4001 */
SPINAND_BD_ERROR_PARSING_FAILED = -4002, /* SFDP Parsing failed */
SPINAND_BD_ERROR_READY_FAILED = -4003, /* Wait for Mem Ready failed */
SPINAND_BD_ERROR_WREN_FAILED = -4004, /* Write Enable Failed */
SPINAND_BD_ERROR_INVALID_ERASE_PARAMS = -4005, /* Erase command not on sector aligned addresses or exceeds device size */
SPINAND_BD_ERROR_DEVICE_NOT_UNIQUE = -4006, /* Only one instance per csel is allowed */
SPINAND_BD_ERROR_DEVICE_MAX_EXCEED = -4007 /* Max active SPINAND devices exceeded */
};
/** Enum spinand polarity mode
*
* @enum spinand_polarity_mode
*/
enum spinand_polarity_mode {
SPINAND_POLARITY_MODE_0 = 0, /* CPOL=0, CPHA=0 */
SPINAND_POLARITY_MODE_1 /* CPOL=1, CPHA=1 */
};
#define SPINAND_MAX_ACTIVE_FLASH_DEVICES 10
/** BlockDevice for SPI NAND flash devices over QSPI bus
*
* @code
* // Here's an example using SPI NAND flash device on DISCO_L4R9I target
* #include "mbed.h"
* #include "SPINANDBlockDevice.h"
*
* SPINANDBlockDevice block_device(SPINAND_FLASH1_IO0, SPINAND_FLASH1_IO1, SPINAND_FLASH1_IO2, SPINAND_FLASH1_IO3,
* SPINAND_FLASH1_SCK, SPINAND_FLASH1_CSN, SPINAND_POLARITY_MODE_0, MBED_CONF_SPINAND_QSPI_FREQ);
*
* int main()
* {
* printf("SPI NAND Flash Block Device example\n");
*
* // Initialize the SPI NAND flash device and print the memory layout
* block_device.init();
* bd_size_t sector_size_at_address_0 = block_device.get_erase_size(0);
*
* printf("SPINAND BD size: %llu\n", block_device.size());
* printf("SPINAND BD read size: %llu\n", block_device.get_read_size());
* printf("SPINAND BD program size: %llu\n", block_device.get_program_size());
* printf("SPINAND BD erase size (at address 0): %llu\n", sector_size_at_address_0);
*
* // Write "Hello World!" to the first block
* char *buffer = (char *) malloc(sector_size_at_address_0);
* sprintf(buffer, "Hello World!\n");
* block_device.erase(0, sector_size_at_address_0);
* block_device.program(buffer, 0, sector_size_at_address_0);
*
* // Read back what was stored
* block_device.read(buffer, 0, sector_size_at_address_0);
* printf("%s", buffer);
*
* // Deinitialize the device
* block_device.deinit();
* }
* @endcode
*/
class SPINANDBlockDevice : public mbed::BlockDevice {
public:
/** Create SPINANDBlockDevice - An SPI NAND Flash Block Device over QSPI bus
*
* @param io0 1st IO pin used for sending/receiving data during data phase of a transaction
* @param io1 2nd IO pin used for sending/receiving data during data phase of a transaction
* @param io2 3rd IO pin used for sending/receiving data during data phase of a transaction
* @param io3 4th IO pin used for sending/receiving data during data phase of a transaction
* @param sclk QSPI Clock pin
* @param csel QSPI chip select pin
* @param clock_mode specifies the QSPI Clock Polarity mode (SPINAND_POLARITY_MODE_0/SPINAND_POLARITY_MODE_1)
* default value = 0
* @param freq Clock frequency of the QSPI bus (defaults to 40MHz)
*/
SPINANDBlockDevice(PinName io0 = MBED_CONF_SPINAND_QSPI_IO0,
PinName io1 = MBED_CONF_SPINAND_QSPI_IO1,
PinName io2 = MBED_CONF_SPINAND_QSPI_IO2,
PinName io3 = MBED_CONF_SPINAND_QSPI_IO3,
PinName sclk = MBED_CONF_SPINAND_QSPI_SCK,
PinName csel = MBED_CONF_SPINAND_QSPI_CSN,
int clock_mode = MBED_CONF_SPINAND_QSPI_POLARITY_MODE,
int freq = MBED_CONF_SPINAND_QSPI_FREQ);
/** Initialize a block device
*
* @return SPINAND_BD_ERROR_OK(0) - success
* SPINAND_BD_ERROR_DEVICE_ERROR - device driver transaction failed
* SPINAND_BD_ERROR_READY_FAILED - Waiting for Memory ready failed or timedout
*/
virtual int init();
/** Deinitialize a block device
*
* @return SPINAND_BD_ERROR_OK(0) - success
* SPINAND_BD_ERROR_DEVICE_ERROR - device driver transaction failed
*/
virtual int deinit();
/** Destruct SPINANDBlockDevie
*/
~SPINANDBlockDevice()
{
deinit();
}
/** Read blocks from a block device
*
* @param buffer Buffer to write blocks to
* @param addr Address of block to begin reading from
* @param size Size to read in bytes, must be a multiple of read block size
* @return SPINAND_BD_ERROR_OK(0) - success
* SPINAND_BD_ERROR_DEVICE_ERROR - device driver transaction failed
*/
virtual int read(void *buffer, mbed::bd_addr_t addr, mbed::bd_size_t size);
/** Program blocks to a block device
*
* The blocks must have been erased prior to being programmed
*
* @param buffer Buffer of data to write to blocks
* @param addr Address of block to begin writing to
* @param size Size to write in bytes, must be a multiple of program block size
* @return SPINAND_BD_ERROR_OK(0) - success
* SPINAND_BD_ERROR_DEVICE_ERROR - device driver transaction failed
* SPINAND_BD_ERROR_READY_FAILED - Waiting for Memory ready failed or timed out
* SPINAND_BD_ERROR_WREN_FAILED - Write Enable failed
*/
virtual int program(const void *buffer, mbed::bd_addr_t addr, mbed::bd_size_t size);
/** Erase blocks on a block device
*
* The state of an erased block is undefined until it has been programmed
*
* @param addr Address of block to begin erasing
* @param size Size to erase in bytes, must be a multiple of erase block size
* @return SPINAND_BD_ERROR_OK(0) - success
* SPINAND_BD_ERROR_DEVICE_ERROR - device driver transaction failed
* SPINAND_BD_ERROR_READY_FAILED - Waiting for Memory ready failed or timed out
* SPINAND_BD_ERROR_WREN_FAILED - Write Enable failed
* SPINAND_BD_ERROR_INVALID_ERASE_PARAMS - Trying to erase unaligned address or size
*/
virtual int erase(mbed::bd_addr_t addr, mbed::bd_size_t size);
/** Get the size of a readable block
*
* @return Size of a readable block in bytes
*/
virtual mbed::bd_size_t get_read_size() const;
/** Get the size of a programable block
*
* @return Size of a program block size in bytes
* @note Must be a multiple of the read size
*/
virtual mbed::bd_size_t get_program_size() const;
/** Get the size of a eraseable block
*
* @return Size of a minimal erase block, common to all regions, in bytes
* @note Must be a multiple of the program size
*/
virtual mbed::bd_size_t get_erase_size() const;
virtual mbed::bd_size_t get_erase_size(bd_addr_t addr) const;
/** Get the value of storage byte after it was erased
*
* If get_erase_value returns a non-negative byte value, the underlying
* storage is set to that value when erased, and storage containing
* that value can be programmed without another erase.
*
* @return The value of storage when erased, or -1 if you can't
* rely on the value of erased storage
*/
virtual int get_erase_value() const;
/** Get the total size of the underlying device
*
* @return Size of the underlying device in bytes
*/
virtual mbed::bd_size_t size() const;
/** Get the BlockDevice class type.
*
* @return A string represent the BlockDevice class type.
*/
virtual const char *get_type() const;
private:
/********************************/
/* Different Device Csel Mgmt */
/********************************/
// Add a new SPI NAND device CS to existing devices list.
// Only one SPINANDBlockDevice instance per CS is allowed
int add_new_csel_instance(PinName csel);
// Remove device CS from existing device list upon destroying object (last deinit is called)
int remove_csel_instance(PinName csel);
/********************************/
/* Calls to QSPI Driver APIs */
/********************************/
// Send Program/Write command to Driver
qspi_status_t _qspi_send_program_command(mbed::qspi_inst_t prog_instruction, const void *buffer,
mbed::bd_addr_t addr, mbed::bd_size_t *size);
// Send Read command to Driver
qspi_status_t _qspi_send_read_command(mbed::qspi_inst_t read_instruction, void *buffer, mbed::bd_addr_t addr, mbed::bd_size_t size);
// Send Erase Instruction using command_transfer command to Driver
qspi_status_t _qspi_send_erase_command(mbed::qspi_inst_t erase_instruction, mbed::bd_addr_t addr, mbed::bd_size_t size);
// Send Generic command_transfer command to Driver
qspi_status_t _qspi_send_general_command(mbed::qspi_inst_t instruction_int, mbed::bd_addr_t addr, const char *tx_buffer,
mbed::bd_size_t tx_length, const char *rx_buffer, mbed::bd_size_t rx_length);
// Send set_frequency command to Driver
qspi_status_t _qspi_set_frequency(int freq);
/*********************************/
/* Flash Configuration Functions */
/*********************************/
// Quad Enable in Security Register
int _set_quad_enable();
// Clear the device's block protection
int _clear_block_protection();
// Configure Write Enable in Status Register
int _set_write_enable();
// Wait on status register until write not-in-progress
bool _is_mem_ready();
private:
// QSPI Driver Object
mbed::QSPI _qspi;
// Static List of different QSPI based Flash devices csel that already exist
// Each QSPI Flash device csel can have only 1 SPINANDBlockDevice instance
// _devices_mutex is used to lock csel list - only one SPINANDBlockDevice instance per csel is allowed
static SingletonPtr<PlatformMutex> _devices_mutex;
static int _number_of_active_spinand_flash_csel;
static PinName *_active_spinand_flash_csel_arr;
int _unique_device_status;
PinName _csel;
// Mutex is used to protect Flash device for some QSPI Driver commands that must be done sequentially with no other commands in between
// e.g. (1)Set Write Enable, (2)Program, (3)Wait Memory Ready
PlatformMutex _mutex;
// Command Instructions
mbed::qspi_inst_t _read_instruction;
mbed::qspi_inst_t _program_instruction;
int _freq;
// Bus speed configuration
qspi_bus_width_t _inst_width; //Bus width for Instruction phase
qspi_bus_width_t _address_width; //Bus width for Address phase
qspi_address_size_t _address_size; //Number of bits for address
qspi_alt_size_t _alt_size; //Number of bits for alt
bool _alt_enabled; //Whether alt is enabled
uint8_t _dummy_cycles; //Number of Dummy cycles required by Current Bus Mode
qspi_bus_width_t _data_width; //Bus width for Data phase
uint32_t _init_ref_count;
bool _is_initialized;
};
#endif
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