/* 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 "drivers/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