// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2014 Freescale Semiconductor, Inc. * Synced from Linux v4.19 */ #ifndef __LINUX_MTD_SPI_NOR_H #define __LINUX_MTD_SPI_NOR_H #include #include #include /* * Manufacturer IDs * * The first byte returned from the flash after sending opcode SPINOR_OP_RDID. * Sometimes these are the same as CFI IDs, but sometimes they aren't. */ #define SNOR_MFR_ATMEL CFI_MFR_ATMEL #define SNOR_MFR_GIGADEVICE 0xc8 #define SNOR_MFR_INTEL CFI_MFR_INTEL #define SNOR_MFR_ST CFI_MFR_ST /* ST Micro <--> Micron */ #define SNOR_MFR_MICRON CFI_MFR_MICRON /* ST Micro <--> Micron */ #define SNOR_MFR_MACRONIX CFI_MFR_MACRONIX #define SNOR_MFR_SPANSION CFI_MFR_AMD #define SNOR_MFR_SST CFI_MFR_SST #define SNOR_MFR_WINBOND 0xef /* Also used by some Spansion */ /* * Note on opcode nomenclature: some opcodes have a format like * SPINOR_OP_FUNCTION{4,}_x_y_z. The numbers x, y, and z stand for the number * of I/O lines used for the opcode, address, and data (respectively). The * FUNCTION has an optional suffix of '4', to represent an opcode which * requires a 4-byte (32-bit) address. */ /* Flash opcodes. */ #define SPINOR_OP_WREN 0x06 /* Write enable */ #define SPINOR_OP_RDSR 0x05 /* Read status register */ #define SPINOR_OP_WRSR 0x01 /* Write status register 1 byte */ #define SPINOR_OP_RDSR2 0x3f /* Read status register 2 */ #define SPINOR_OP_WRSR2 0x3e /* Write status register 2 */ #define SPINOR_OP_READ 0x03 /* Read data bytes (low frequency) */ #define SPINOR_OP_READ_FAST 0x0b /* Read data bytes (high frequency) */ #define SPINOR_OP_READ_1_1_2 0x3b /* Read data bytes (Dual Output SPI) */ #define SPINOR_OP_READ_1_2_2 0xbb /* Read data bytes (Dual I/O SPI) */ #define SPINOR_OP_READ_1_1_4 0x6b /* Read data bytes (Quad Output SPI) */ #define SPINOR_OP_READ_1_4_4 0xeb /* Read data bytes (Quad I/O SPI) */ #define SPINOR_OP_READ_1_1_8 0x8b /* Read data bytes (Octal Output SPI) */ #define SPINOR_OP_READ_1_8_8 0xcb /* Read data bytes (Octal I/O SPI) */ #define SPINOR_OP_PP 0x02 /* Page program (up to 256 bytes) */ #define SPINOR_OP_PP_1_1_4 0x32 /* Quad page program */ #define SPINOR_OP_PP_1_4_4 0x38 /* Quad page program */ #define SPINOR_OP_PP_1_1_8 0x82 /* Octal page program */ #define SPINOR_OP_PP_1_8_8 0xc2 /* Octal page program */ #define SPINOR_OP_BE_4K 0x20 /* Erase 4KiB block */ #define SPINOR_OP_BE_4K_PMC 0xd7 /* Erase 4KiB block on PMC chips */ #define SPINOR_OP_BE_32K 0x52 /* Erase 32KiB block */ #define SPINOR_OP_CHIP_ERASE 0xc7 /* Erase whole flash chip */ #define SPINOR_OP_SE 0xd8 /* Sector erase (usually 64KiB) */ #define SPINOR_OP_RDID 0x9f /* Read JEDEC ID */ #define SPINOR_OP_RDSFDP 0x5a /* Read SFDP */ #define SPINOR_OP_RDCR 0x35 /* Read configuration register */ #define SPINOR_OP_RDFSR 0x70 /* Read flag status register */ #define SPINOR_OP_CLFSR 0x50 /* Clear flag status register */ #define SPINOR_OP_RDEAR 0xc8 /* Read Extended Address Register */ #define SPINOR_OP_WREAR 0xc5 /* Write Extended Address Register */ /* 4-byte address opcodes - used on Spansion and some Macronix flashes. */ #define SPINOR_OP_READ_4B 0x13 /* Read data bytes (low frequency) */ #define SPINOR_OP_READ_FAST_4B 0x0c /* Read data bytes (high frequency) */ #define SPINOR_OP_READ_1_1_2_4B 0x3c /* Read data bytes (Dual Output SPI) */ #define SPINOR_OP_READ_1_2_2_4B 0xbc /* Read data bytes (Dual I/O SPI) */ #define SPINOR_OP_READ_1_1_4_4B 0x6c /* Read data bytes (Quad Output SPI) */ #define SPINOR_OP_READ_1_4_4_4B 0xec /* Read data bytes (Quad I/O SPI) */ #define SPINOR_OP_READ_1_1_8_4B 0x7c /* Read data bytes (Octal Output SPI) */ #define SPINOR_OP_READ_1_8_8_4B 0xcc /* Read data bytes (Octal I/O SPI) */ #define SPINOR_OP_PP_4B 0x12 /* Page program (up to 256 bytes) */ #define SPINOR_OP_PP_1_1_4_4B 0x34 /* Quad page program */ #define SPINOR_OP_PP_1_4_4_4B 0x3e /* Quad page program */ #define SPINOR_OP_PP_1_1_8_4B 0x84 /* Octal page program */ #define SPINOR_OP_PP_1_8_8_4B 0x8e /* Octal page program */ #define SPINOR_OP_BE_4K_4B 0x21 /* Erase 4KiB block */ #define SPINOR_OP_BE_32K_4B 0x5c /* Erase 32KiB block */ #define SPINOR_OP_SE_4B 0xdc /* Sector erase (usually 64KiB) */ /* Double Transfer Rate opcodes - defined in JEDEC JESD216B. */ #define SPINOR_OP_READ_1_1_1_DTR 0x0d #define SPINOR_OP_READ_1_2_2_DTR 0xbd #define SPINOR_OP_READ_1_4_4_DTR 0xed #define SPINOR_OP_READ_1_1_1_DTR_4B 0x0e #define SPINOR_OP_READ_1_2_2_DTR_4B 0xbe #define SPINOR_OP_READ_1_4_4_DTR_4B 0xee /* Used for SST flashes only. */ #define SPINOR_OP_BP 0x02 /* Byte program */ #define SPINOR_OP_WRDI 0x04 /* Write disable */ #define SPINOR_OP_AAI_WP 0xad /* Auto address increment word program */ /* Used for SST26* flashes only. */ #define SPINOR_OP_READ_BPR 0x72 /* Read block protection register */ #define SPINOR_OP_WRITE_BPR 0x42 /* Write block protection register */ /* Used for S3AN flashes only */ #define SPINOR_OP_XSE 0x50 /* Sector erase */ #define SPINOR_OP_XPP 0x82 /* Page program */ #define SPINOR_OP_XRDSR 0xd7 /* Read status register */ #define XSR_PAGESIZE BIT(0) /* Page size in Po2 or Linear */ #define XSR_RDY BIT(7) /* Ready */ /* Used for Macronix and Winbond flashes. */ #define SPINOR_OP_EN4B 0xb7 /* Enter 4-byte mode */ #define SPINOR_OP_EX4B 0xe9 /* Exit 4-byte mode */ /* Used for Spansion flashes only. */ #define SPINOR_OP_BRWR 0x17 /* Bank register write */ #define SPINOR_OP_BRRD 0x16 /* Bank register read */ #define SPINOR_OP_CLSR 0x30 /* Clear status register 1 */ /* Used for Micron flashes only. */ #define SPINOR_OP_RD_EVCR 0x65 /* Read EVCR register */ #define SPINOR_OP_WD_EVCR 0x61 /* Write EVCR register */ /* Status Register bits. */ #define SR_WIP BIT(0) /* Write in progress */ #define SR_WEL BIT(1) /* Write enable latch */ /* meaning of other SR_* bits may differ between vendors */ #define SR_BP0 BIT(2) /* Block protect 0 */ #define SR_BP1 BIT(3) /* Block protect 1 */ #define SR_BP2 BIT(4) /* Block protect 2 */ #define SR_TB BIT(5) /* Top/Bottom protect */ #define SR_SRWD BIT(7) /* SR write protect */ /* Spansion/Cypress specific status bits */ #define SR_E_ERR BIT(5) #define SR_P_ERR BIT(6) #define SR_QUAD_EN_MX BIT(6) /* Macronix Quad I/O */ /* Enhanced Volatile Configuration Register bits */ #define EVCR_QUAD_EN_MICRON BIT(7) /* Micron Quad I/O */ /* Flag Status Register bits */ #define FSR_READY BIT(7) /* Device status, 0 = Busy, 1 = Ready */ #define FSR_E_ERR BIT(5) /* Erase operation status */ #define FSR_P_ERR BIT(4) /* Program operation status */ #define FSR_PT_ERR BIT(1) /* Protection error bit */ /* Configuration Register bits. */ #define CR_QUAD_EN_SPAN BIT(1) /* Spansion Quad I/O */ /* Status Register 2 bits. */ #define SR2_QUAD_EN_BIT7 BIT(7) /* Supported SPI protocols */ #define SNOR_PROTO_INST_MASK GENMASK(23, 16) #define SNOR_PROTO_INST_SHIFT 16 #define SNOR_PROTO_INST(_nbits) \ ((((unsigned long)(_nbits)) << SNOR_PROTO_INST_SHIFT) & \ SNOR_PROTO_INST_MASK) #define SNOR_PROTO_ADDR_MASK GENMASK(15, 8) #define SNOR_PROTO_ADDR_SHIFT 8 #define SNOR_PROTO_ADDR(_nbits) \ ((((unsigned long)(_nbits)) << SNOR_PROTO_ADDR_SHIFT) & \ SNOR_PROTO_ADDR_MASK) #define SNOR_PROTO_DATA_MASK GENMASK(7, 0) #define SNOR_PROTO_DATA_SHIFT 0 #define SNOR_PROTO_DATA(_nbits) \ ((((unsigned long)(_nbits)) << SNOR_PROTO_DATA_SHIFT) & \ SNOR_PROTO_DATA_MASK) #define SNOR_PROTO_IS_DTR BIT(24) /* Double Transfer Rate */ #define SNOR_PROTO_STR(_inst_nbits, _addr_nbits, _data_nbits) \ (SNOR_PROTO_INST(_inst_nbits) | \ SNOR_PROTO_ADDR(_addr_nbits) | \ SNOR_PROTO_DATA(_data_nbits)) #define SNOR_PROTO_DTR(_inst_nbits, _addr_nbits, _data_nbits) \ (SNOR_PROTO_IS_DTR | \ SNOR_PROTO_STR(_inst_nbits, _addr_nbits, _data_nbits)) enum spi_nor_protocol { SNOR_PROTO_1_1_1 = SNOR_PROTO_STR(1, 1, 1), SNOR_PROTO_1_1_2 = SNOR_PROTO_STR(1, 1, 2), SNOR_PROTO_1_1_4 = SNOR_PROTO_STR(1, 1, 4), SNOR_PROTO_1_1_8 = SNOR_PROTO_STR(1, 1, 8), SNOR_PROTO_1_2_2 = SNOR_PROTO_STR(1, 2, 2), SNOR_PROTO_1_4_4 = SNOR_PROTO_STR(1, 4, 4), SNOR_PROTO_1_8_8 = SNOR_PROTO_STR(1, 8, 8), SNOR_PROTO_2_2_2 = SNOR_PROTO_STR(2, 2, 2), SNOR_PROTO_4_4_4 = SNOR_PROTO_STR(4, 4, 4), SNOR_PROTO_8_8_8 = SNOR_PROTO_STR(8, 8, 8), SNOR_PROTO_1_1_1_DTR = SNOR_PROTO_DTR(1, 1, 1), SNOR_PROTO_1_2_2_DTR = SNOR_PROTO_DTR(1, 2, 2), SNOR_PROTO_1_4_4_DTR = SNOR_PROTO_DTR(1, 4, 4), SNOR_PROTO_1_8_8_DTR = SNOR_PROTO_DTR(1, 8, 8), }; static inline bool spi_nor_protocol_is_dtr(enum spi_nor_protocol proto) { return !!(proto & SNOR_PROTO_IS_DTR); } static inline u8 spi_nor_get_protocol_inst_nbits(enum spi_nor_protocol proto) { return ((unsigned long)(proto & SNOR_PROTO_INST_MASK)) >> SNOR_PROTO_INST_SHIFT; } static inline u8 spi_nor_get_protocol_addr_nbits(enum spi_nor_protocol proto) { return ((unsigned long)(proto & SNOR_PROTO_ADDR_MASK)) >> SNOR_PROTO_ADDR_SHIFT; } static inline u8 spi_nor_get_protocol_data_nbits(enum spi_nor_protocol proto) { return ((unsigned long)(proto & SNOR_PROTO_DATA_MASK)) >> SNOR_PROTO_DATA_SHIFT; } static inline u8 spi_nor_get_protocol_width(enum spi_nor_protocol proto) { return spi_nor_get_protocol_data_nbits(proto); } #define SPI_NOR_MAX_CMD_SIZE 8 enum spi_nor_ops { SPI_NOR_OPS_READ = 0, SPI_NOR_OPS_WRITE, SPI_NOR_OPS_ERASE, SPI_NOR_OPS_LOCK, SPI_NOR_OPS_UNLOCK, }; enum spi_nor_option_flags { SNOR_F_USE_FSR = BIT(0), SNOR_F_HAS_SR_TB = BIT(1), SNOR_F_NO_OP_CHIP_ERASE = BIT(2), SNOR_F_S3AN_ADDR_DEFAULT = BIT(3), SNOR_F_READY_XSR_RDY = BIT(4), SNOR_F_USE_CLSR = BIT(5), SNOR_F_BROKEN_RESET = BIT(6), }; /** * struct flash_info - Forward declaration of a structure used internally by * spi_nor_scan() */ struct flash_info; /* * TODO: Remove, once all users of spi_flash interface are moved to MTD * * struct spi_flash { * Defined below (keep this text to enable searching for spi_flash decl) * } */ #define spi_flash spi_nor /** * struct spi_nor - Structure for defining a the SPI NOR layer * @mtd: point to a mtd_info structure * @lock: the lock for the read/write/erase/lock/unlock operations * @dev: point to a spi device, or a spi nor controller device. * @info: spi-nor part JDEC MFR id and other info * @manufacturer_sfdp: manufacturer specific SFDP table * @page_size: the page size of the SPI NOR * @addr_width: number of address bytes * @erase_opcode: the opcode for erasing a sector * @read_opcode: the read opcode * @read_dummy: the dummy needed by the read operation * @program_opcode: the program opcode * @bank_read_cmd: Bank read cmd * @bank_write_cmd: Bank write cmd * @bank_curr: Current flash bank * @sst_write_second: used by the SST write operation * @flags: flag options for the current SPI-NOR (SNOR_F_*) * @read_proto: the SPI protocol for read operations * @write_proto: the SPI protocol for write operations * @reg_proto the SPI protocol for read_reg/write_reg/erase operations * @cmd_buf: used by the write_reg * @prepare: [OPTIONAL] do some preparations for the * read/write/erase/lock/unlock operations * @unprepare: [OPTIONAL] do some post work after the * read/write/erase/lock/unlock operations * @read_reg: [DRIVER-SPECIFIC] read out the register * @write_reg: [DRIVER-SPECIFIC] write data to the register * @read: [DRIVER-SPECIFIC] read data from the SPI NOR * @write: [DRIVER-SPECIFIC] write data to the SPI NOR * @erase: [DRIVER-SPECIFIC] erase a sector of the SPI NOR * at the offset @offs; if not provided by the driver, * spi-nor will send the erase opcode via write_reg() * @flash_lock: [FLASH-SPECIFIC] lock a region of the SPI NOR * @flash_unlock: [FLASH-SPECIFIC] unlock a region of the SPI NOR * @flash_is_locked: [FLASH-SPECIFIC] check if a region of the SPI NOR is * @quad_enable: [FLASH-SPECIFIC] enables SPI NOR quad mode * completely locked * @priv: the private data */ struct spi_nor { struct mtd_info mtd; struct udevice *dev; struct spi_slave *spi; const struct flash_info *info; u8 *manufacturer_sfdp; u32 page_size; u8 addr_width; u8 erase_opcode; u8 read_opcode; u8 read_dummy; u8 program_opcode; #ifdef CONFIG_SPI_FLASH_BAR u8 bank_read_cmd; u8 bank_write_cmd; u8 bank_curr; #endif enum spi_nor_protocol read_proto; enum spi_nor_protocol write_proto; enum spi_nor_protocol reg_proto; bool sst_write_second; u32 flags; u8 cmd_buf[SPI_NOR_MAX_CMD_SIZE]; int (*prepare)(struct spi_nor *nor, enum spi_nor_ops ops); void (*unprepare)(struct spi_nor *nor, enum spi_nor_ops ops); int (*read_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len); int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len); ssize_t (*read)(struct spi_nor *nor, loff_t from, size_t len, u_char *read_buf); ssize_t (*write)(struct spi_nor *nor, loff_t to, size_t len, const u_char *write_buf); int (*erase)(struct spi_nor *nor, loff_t offs); int (*flash_lock)(struct spi_nor *nor, loff_t ofs, uint64_t len); int (*flash_unlock)(struct spi_nor *nor, loff_t ofs, uint64_t len); int (*flash_is_locked)(struct spi_nor *nor, loff_t ofs, uint64_t len); int (*quad_enable)(struct spi_nor *nor); void *priv; /* Compatibility for spi_flash, remove once sf layer is merged with mtd */ const char *name; u32 size; u32 sector_size; u32 erase_size; }; static inline void spi_nor_set_flash_node(struct spi_nor *nor, const struct device_node *np) { mtd_set_of_node(&nor->mtd, np); } static inline const struct device_node *spi_nor_get_flash_node(struct spi_nor *nor) { return mtd_get_of_node(&nor->mtd); } /** * struct spi_nor_hwcaps - Structure for describing the hardware capabilies * supported by the SPI controller (bus master). * @mask: the bitmask listing all the supported hw capabilies */ struct spi_nor_hwcaps { u32 mask; }; /* *(Fast) Read capabilities. * MUST be ordered by priority: the higher bit position, the higher priority. * As a matter of performances, it is relevant to use Octo SPI protocols first, * then Quad SPI protocols before Dual SPI protocols, Fast Read and lastly * (Slow) Read. */ #define SNOR_HWCAPS_READ_MASK GENMASK(14, 0) #define SNOR_HWCAPS_READ BIT(0) #define SNOR_HWCAPS_READ_FAST BIT(1) #define SNOR_HWCAPS_READ_1_1_1_DTR BIT(2) #define SNOR_HWCAPS_READ_DUAL GENMASK(6, 3) #define SNOR_HWCAPS_READ_1_1_2 BIT(3) #define SNOR_HWCAPS_READ_1_2_2 BIT(4) #define SNOR_HWCAPS_READ_2_2_2 BIT(5) #define SNOR_HWCAPS_READ_1_2_2_DTR BIT(6) #define SNOR_HWCAPS_READ_QUAD GENMASK(10, 7) #define SNOR_HWCAPS_READ_1_1_4 BIT(7) #define SNOR_HWCAPS_READ_1_4_4 BIT(8) #define SNOR_HWCAPS_READ_4_4_4 BIT(9) #define SNOR_HWCAPS_READ_1_4_4_DTR BIT(10) #define SNOR_HWCPAS_READ_OCTO GENMASK(14, 11) #define SNOR_HWCAPS_READ_1_1_8 BIT(11) #define SNOR_HWCAPS_READ_1_8_8 BIT(12) #define SNOR_HWCAPS_READ_8_8_8 BIT(13) #define SNOR_HWCAPS_READ_1_8_8_DTR BIT(14) /* * Page Program capabilities. * MUST be ordered by priority: the higher bit position, the higher priority. * Like (Fast) Read capabilities, Octo/Quad SPI protocols are preferred to the * legacy SPI 1-1-1 protocol. * Note that Dual Page Programs are not supported because there is no existing * JEDEC/SFDP standard to define them. Also at this moment no SPI flash memory * implements such commands. */ #define SNOR_HWCAPS_PP_MASK GENMASK(22, 16) #define SNOR_HWCAPS_PP BIT(16) #define SNOR_HWCAPS_PP_QUAD GENMASK(19, 17) #define SNOR_HWCAPS_PP_1_1_4 BIT(17) #define SNOR_HWCAPS_PP_1_4_4 BIT(18) #define SNOR_HWCAPS_PP_4_4_4 BIT(19) #define SNOR_HWCAPS_PP_OCTO GENMASK(22, 20) #define SNOR_HWCAPS_PP_1_1_8 BIT(20) #define SNOR_HWCAPS_PP_1_8_8 BIT(21) #define SNOR_HWCAPS_PP_8_8_8 BIT(22) /** * spi_nor_scan() - scan the SPI NOR * @nor: the spi_nor structure * * The drivers can use this function to scan the SPI NOR. * In the scanning, it will try to get all the necessary information to * fill the mtd_info{} and the spi_nor{}. * * Return: 0 for success, others for failure. */ int spi_nor_scan(struct spi_nor *nor); #endif