add SPI NAND Block device driver

storage/blockdevice/COMPONENT_SPINAND/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Copyright (c) 2021 ARM Limited. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+target_include_directories(mbed-storage-spinand
+    INTERFACE
+        include
+        include/SPINAND
+)
+
+target_sources(mbed-storage-spinand
+    INTERFACE
+        source/SPINANDBlockDevice.cpp
+)

storage/blockdevice/COMPONENT_SPINAND/include/SPINAND/SPINANDBlockDevice.h

@@ -0,0 +1,325 @@
+/* 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

storage/blockdevice/COMPONENT_SPINAND/mbed_lib.json

@@ -0,0 +1,31 @@
+{
+    "name": "spinand",
+    "config": {
+        "enable-and-reset": {
+            "help": "(Legacy SFDP 1.0 ONLY) Reset sequence is enable reset (0x66) then reset (0x99)",
+            "value": false
+        },
+        "direct-reset": {
+            "help": "(Legacy SFDP 1.0 ONLY) Reset involves a single command (0xF0)",
+            "value": false
+        },
+        "SPINAND_IO0": "MBED_CONF_DRIVERS_QSPI_IO0",
+        "SPINAND_IO1": "MBED_CONF_DRIVERS_QSPI_IO1",
+        "SPINAND_IO2": "MBED_CONF_DRIVERS_QSPI_IO2",
+        "SPINAND_IO3": "MBED_CONF_DRIVERS_QSPI_IO3",
+        "SPINAND_SCK": "MBED_CONF_DRIVERS_QSPI_SCK",
+        "SPINAND_CSN": "MBED_CONF_DRIVERS_QSPI_CSN",
+        "SPINAND_POLARITY_MODE": 0,
+        "SPINAND_FREQ": "40000000",
+        "SPINAND_MIN_READ_SIZE": "1",
+        "SPINAND_MIN_PROG_SIZE": "1",
+        "SPINAND_FLASH_SIZE": "2048*64*512",
+        "SPINAND_BLOCK_SIZE": "2048*64",
+        "SPINAND_PAGE_SIZE": "2048"
+    },
+    "target_overrides": {
+        "MX31LF4GE4BC": {
+            "SPINAND_FREQ": "2000000"
+        }
+    }
+}