Mbed OS Reference | OSPIFBlockDevice.h Source File

 /* mbed Microcontroller Library
  * Copyright (c) 2020 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_OSPIF_BLOCK_DEVICE_H
 #define MBED_OSPIF_BLOCK_DEVICE_H
 
 #include "drivers/OSPI.h"
 #include "blockdevice/internal/SFDP.h"
 #include "blockdevice/BlockDevice.h"
 #include "platform/Callback.h"
 
 #ifndef MBED_CONF_OSPIF_OSPI_IO0
 #define MBED_CONF_OSPIF_OSPI_IO0 NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_IO1
 #define MBED_CONF_OSPIF_OSPI_IO1 NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_IO2
 #define MBED_CONF_OSPIF_OSPI_IO2 NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_IO3
 #define MBED_CONF_OSPIF_OSPI_IO3 NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_IO4
 #define MBED_CONF_OSPIF_OSPI_IO4 NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_IO5
 #define MBED_CONF_OSPIF_OSPI_IO5 NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_IO6
 #define MBED_CONF_OSPIF_OSPI_IO6 NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_IO7
 #define MBED_CONF_OSPIF_OSPI_IO7 NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_SCK
 #define MBED_CONF_OSPIF_OSPI_SCK NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_CSN
 #define MBED_CONF_OSPIF_OSPI_CSN NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_DQS
 #define MBED_CONF_OSPIF_OSPI_DQS NC
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_POLARITY_MODE
 #define MBED_CONF_OSPIF_OSPI_POLARITY_MODE 0
 #endif
 #ifndef MBED_CONF_OSPIF_OSPI_FREQ
 #define MBED_CONF_OSPIF_OSPI_FREQ 40000000
 #endif
 
 /** Enum ospif standard error codes
  *
  *  @enum ospif_bd_error
  */
 enum ospif_bd_error {
     OSPIF_BD_ERROR_OK                    = 0,     /*!< no error */
     OSPIF_BD_ERROR_DEVICE_ERROR          = BD_ERROR_DEVICE_ERROR, /*!< device specific error -4001 */
     OSPIF_BD_ERROR_PARSING_FAILED        = -4002, /* SFDP Parsing failed */
     OSPIF_BD_ERROR_READY_FAILED          = -4003, /* Wait for Mem Ready failed */
     OSPIF_BD_ERROR_WREN_FAILED           = -4004, /* Write Enable Failed */
     OSPIF_BD_ERROR_INVALID_ERASE_PARAMS  = -4005, /* Erase command not on sector aligned addresses or exceeds device size */
     OSPIF_BD_ERROR_DEVICE_NOT_UNIQUE     = -4006, /* Only one instance per csel is allowed */
     OSPIF_BD_ERROR_DEVICE_MAX_EXCEED     = -4007  /* Max active OSPIF devices exceeded */
 };
 
 enum _mode {
     SPI,
     SOPI,
     DOPI
 };
 
 /** Enum ospif polarity mode
  *
  *  @enum ospif_polarity_mode
  */
 enum ospif_polarity_mode {
     OSPIF_POLARITY_MODE_0 = 0, /* CPOL=0, CPHA=0 */
     OSPIF_POLARITY_MODE_1      /* CPOL=1, CPHA=1 */
 };
 
 #define OSPIF_MAX_ACTIVE_FLASH_DEVICES 10
 
 /** BlockDevice for SFDP based flash devices over OSPI bus
  *
  *  @code
  *  // Here's an example using OSPI flash device on NUCLEO_L4R9I target
  *  #include "mbed.h"
  *  #include "OSPIFBlockDevice.h"
  *
  *  OSPIFBlockDevice block_device(OSPI_FLASH1_IO0, OSPI_FLASH1_IO1, OSPI_FLASH1_IO2, OSPI_FLASH1_IO3, OSPI_FLASH1_IO4, OSPI_FLASH1_IO5, OSPI_FLASH1_IO6, OSPI_FLASH1_IO7
  *                                OSPI_FLASH1_SCK, OSPI_FLASH1_CSN, OSPI_FLASH1_DQS, OSPIF_POLARITY_MODE_0, MBED_CONF_OSPIF_OSPI_FREQ);
  *
  *  int main()
  *  {
  *      printf("OSPI SFDP Flash Block Device example\n");
  *
  *      // Initialize the OSPI 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("OSPIF BD size: %llu\n",         block_device.size());
  *      printf("OSPIF BD read size: %llu\n",    block_device.get_read_size());
  *      printf("OSPIF BD program size: %llu\n", block_device.get_program_size());
  *      printf("OSPIF 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 OSPIFBlockDevice : public mbed::BlockDevice {
 public:
     /** Create OSPIFBlockDevice - An SFDP based Flash Block Device over OSPI 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 io4 5th IO pin used for sending/receiving data during data phase of a transaction
      *  @param io5 6th IO pin used for sending/receiving data during data phase of a transaction
      *  @param io6 7th IO pin used for sending/receiving data during data phase of a transaction
      *  @param io7 8th IO pin used for sending/receiving data during data phase of a transaction
      *  @param sclk OSPI Clock pin
      *  @param csel OSPI chip select pin
      *  @param dqs OSPI dqs pin
      *  @param clock_mode specifies the OSPI Clock Polarity mode (OSPIF_POLARITY_MODE_0/OSPIF_POLARITY_MODE_1)
      *         default value = 0
      *  @param freq Clock frequency of the OSPI bus (defaults to 40MHz)
      */
     OSPIFBlockDevice(PinName io0 = MBED_CONF_OSPIF_OSPI_IO0,
                      PinName io1 = MBED_CONF_OSPIF_OSPI_IO1,
                      PinName io2 = MBED_CONF_OSPIF_OSPI_IO2,
                      PinName io3 = MBED_CONF_OSPIF_OSPI_IO3,
                      PinName io4 = MBED_CONF_OSPIF_OSPI_IO4,
                      PinName io5 = MBED_CONF_OSPIF_OSPI_IO5,
                      PinName io6 = MBED_CONF_OSPIF_OSPI_IO6,
                      PinName io7 = MBED_CONF_OSPIF_OSPI_IO7,
                      PinName sclk = MBED_CONF_OSPIF_OSPI_SCK,
                      PinName csel = MBED_CONF_OSPIF_OSPI_CSN,
                      PinName dqs = MBED_CONF_OSPIF_OSPI_DQS,
                      int clock_mode = MBED_CONF_OSPIF_OSPI_POLARITY_MODE,
                      int freq = MBED_CONF_OSPIF_OSPI_FREQ);
 
     /** Initialize a block device
      *
      *  @return         OSPIF_BD_ERROR_OK(0) - success
      *                  OSPIF_BD_ERROR_DEVICE_ERROR - device driver transaction failed
      *                  OSPIF_BD_ERROR_READY_FAILED - Waiting for Memory ready failed or timedout
      *                  OSPIF_BD_ERROR_PARSING_FAILED - unexpected format or values in one of the SFDP tables
      */
     virtual int init();
 
     /** Deinitialize a block device
      *
      *  @return         OSPIF_BD_ERROR_OK(0) - success
      *                  OSPIF_BD_ERROR_DEVICE_ERROR - device driver transaction failed
      */
     virtual int deinit();
 
     /** Desctruct OSPIFBlockDevie
       */
     ~OSPIFBlockDevice()
     {
         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         OSPIF_BD_ERROR_OK(0) - success
      *                  OSPIF_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         OSPIF_BD_ERROR_OK(0) - success
      *                  OSPIF_BD_ERROR_DEVICE_ERROR - device driver transaction failed
      *                  OSPIF_BD_ERROR_READY_FAILED - Waiting for Memory ready failed or timed out
      *                  OSPIF_BD_ERROR_WREN_FAILED - Write Enable failed
      *                  OSPIF_BD_ERROR_PARSING_FAILED - unexpected format or values in one of the SFDP tables
      */
     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         OSPIF_BD_ERROR_OK(0) - success
      *                  OSPIF_BD_ERROR_DEVICE_ERROR - device driver transaction failed
      *                  OSPIF_BD_ERROR_READY_FAILED - Waiting for Memory ready failed or timed out
      *                  OSPIF_BD_ERROR_WREN_FAILED - Write Enable failed
      *                  OSPIF_BD_ERROR_PARSING_FAILED - unexpected format or values in one of the SFDP tables
      *                  OSPIF_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;
 
     /** Get the size of minimal eraseable sector size of given address
      *
      *  @param addr     Any address within block queried for erase sector size (can be any address within flash size offset)
      *  @return         Size of minimal erase sector size, in given address region, in bytes
      *  @note Must be a multiple of the program size
      */
     virtual mbed::bd_size_t get_erase_size(mbed::bd_addr_t addr);
 
     /** 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;
 
     /** Change the operation mode(SPI, SOPI or DOPI) of flash.
      *
      *  @return         OSPIF_BD_ERROR_OK(0) - success
      *                  OSPIF_BD_ERROR_DEVICE_ERROR - device driver transaction failed
      *                  OSPIF_BD_ERROR_READY_FAILED - Waiting for Memory ready failed or timed out
      *                  OSPIF_BD_ERROR_WREN_FAILED - Write Enable failed
      *                  OSPIF_BD_ERROR_PARSING_FAILED - unexpected format or values in one of the SFDP tables
      *                  OSPIF_BD_ERROR_INVALID_ERASE_PARAMS - Trying to erase unaligned address or size
      */
     virtual int change_mode(int mode);
 
 private:
     /********************************/
     /*   Different Device Csel Mgmt */
     /********************************/
     // Add a new OSPI device CS to existing devices list.
     // Only one OSPIFBlockDevice 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 OSPI Driver APIs  */
     /********************************/
     // Send Program/Write command to Driver
     ospi_status_t _ospi_send_program_command(mbed::ospi_inst_t prog_instruction, const void *buffer,
                                              mbed::bd_addr_t addr, mbed::bd_size_t *size);
 
     // Send Read command to Driver
     ospi_status_t _ospi_send_read_command(mbed::ospi_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
     ospi_status_t _ospi_send_erase_command(mbed::ospi_inst_t erase_instruction, mbed::bd_addr_t addr, mbed::bd_size_t size);
 
     // Send Generic command_transfer command to Driver
     ospi_status_t _ospi_send_general_command(mbed::ospi_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 command to read from the SFDP table
     int _ospi_send_read_sfdp_command(mbed::bd_addr_t addr, void *rx_buffer, mbed::bd_size_t rx_length);
 
     // Read the contents of status registers 1 and 2 into a buffer (buffer must have a length of 2)
     ospi_status_t _ospi_read_status_registers(uint8_t *reg_buffer);
 
     // Set the contents of status registers 1 and 2 from a buffer (buffer must have a length of 2)
     ospi_status_t _ospi_write_status_registers(uint8_t *reg_buffer);
 
     // Send set_frequency command to Driver
     ospi_status_t _ospi_set_frequency(int freq);
 
     // Update the 4-byte addressing extension register with the MSB of the address if it is in use
     ospi_status_t _ospi_update_4byte_ext_addr_reg(bd_addr_t addr);
 
     /*********************************/
     /* Flash Configuration Functions */
     /*********************************/
     // 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();
 
     // Enable Fast Mode - for flash chips with low power default
     int _enable_fast_mode();
 
     // Enable OPI Mode
     int _enable_opi_mdoe();
 
     // Query vendor ID and handle special behavior that isn't covered by SFDP data
     int _handle_vendor_quirks();
 
     /****************************************/
     /* SFDP Detection and Parsing Functions */
     /****************************************/
     // Parse and Detect required Basic Parameters from Table
     int _sfdp_parse_basic_param_table(mbed::Callback<int(mbed::bd_addr_t, void *, mbed::bd_size_t)> sfdp_reader,
                                       mbed::sfdp_hdr_info &sfdp_info);
 
     // Parse and Detect 4-Byte Address Instruction Parameters from Table
     int _sfdp_parse_4_byte_inst_table(mbed::Callback<int(mbed::bd_addr_t, void *, mbed::bd_size_t)> sfdp_reader,
                                       mbed::sfdp_hdr_info &sfdp_info);
 
     // Detect the soft reset protocol and reset - returns error if soft reset is not supported
     int _sfdp_detect_reset_protocol_and_reset(uint8_t *basic_param_table_ptr);
 
     // Detect fastest read Bus mode supported by device
     int _sfdp_detect_best_bus_read_mode(uint8_t *basic_param_table_ptr, int basic_param_table_size,
                                         bool &set_quad_enable, bool &is_qpi_mode, bool &is_opi_mode);
 
     // Enable Quad mode if supported (1-1-4, 1-4-4, 4-4-4 bus modes)
     int _sfdp_set_quad_enabled(uint8_t *basic_param_table_ptr);
 
     // Enable QPI mode (4-4-4)
     int _sfdp_set_qpi_enabled(uint8_t *basic_param_table_ptr);
 
     // Detect 4-byte addressing mode and enable it if supported
     int _sfdp_detect_and_enable_4byte_addressing(uint8_t *basic_param_table_ptr, int basic_param_table_size);
 
 private:
     enum ospif_clear_protection_method_t {
         OSPIF_BP_ULBPR,    // Issue global protection unlock instruction
         OSPIF_BP_CLEAR_SR, // Clear protection bits in status register 1
     };
 
     // OSPI Driver Object
     mbed::OSPI _ospi;
 
     // Static List of different OSPI based Flash devices csel that already exist
     // Each OSPI Flash device csel can have only 1 OSPIFBlockDevice instance
     // _devices_mutex is used to lock csel list - only one OSPIFBlockDevice instance per csel is allowed
     static SingletonPtr<PlatformMutex> _devices_mutex;
     static int _number_of_active_ospif_flash_csel;
     static PinName *_active_ospif_flash_csel_arr;
 
     int _unique_device_status;
     PinName _csel;
 
     // Mutex is used to protect Flash device for some OSPI 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::ospi_inst_t _read_instruction;
     mbed::ospi_inst_t _prog_instruction;
     mbed::ospi_inst_t _legacy_erase_instruction;
 
     // Status register write/read instructions
     unsigned int _num_status_registers;
     mbed::ospi_inst_t _write_status_reg_2_inst;
     mbed::ospi_inst_t _read_status_reg_2_inst; // If three registers, this instruction reads the latter two
 
     // Attempt to enable 4-byte addressing. True by default, but may be disabled for some vendors
     bool _attempt_4_byte_addressing;
     // 4-byte addressing extension register write instruction
     mbed::ospi_inst_t _4byte_msb_reg_write_inst;
 
     // Flash support 4-Byte instructions,like READ4B(0x13).
     bool _support_4_byte_inst;
 
     // Quad mode enable status register and bit
     int _quad_enable_register_idx;
     int _quad_enable_bit;
 
     bool _needs_fast_mode;
 
     // Clear block protection
     ospif_clear_protection_method_t _clear_protection_method;
 
     // Data extracted from the devices SFDP structure
     mbed::sfdp_hdr_info _sfdp_info;
 
     unsigned int _page_size_bytes; // Page size - 256 Bytes default
     int _freq;
 
     // Bus speed configuration
     ospi_bus_width_t _inst_width; //Bus width for Instruction phase
     ospi_inst_size_t _inst_size; //Instruction Size
     ospi_bus_width_t _address_width; //Bus width for Address phase
     ospi_address_size_t _address_size; //Number of bits for address
     ospi_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
     ospi_bus_width_t _data_width; //Bus width for Data phase
 
     uint32_t _init_ref_count;
     bool _is_initialized;
 };
 
 #endif
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