| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| /* |
| * SPI flash internal definitions |
| */ |
| |
| #ifndef SPI_FLASH_INTERNAL_H |
| #define SPI_FLASH_INTERNAL_H |
| |
| /* Common commands */ |
| #define CMD_READ_ID 0x9f |
| |
| #define CMD_READ_ARRAY_SLOW 0x03 |
| #define CMD_READ_ARRAY_FAST 0x0b |
| #define CMD_READ_ARRAY_LEGACY 0xe8 |
| |
| #define CMD_READ_FAST_DUAL_OUTPUT 0x3b |
| #define CMD_READ_FAST_DUAL_IO 0xbb |
| |
| #define CMD_READ_STATUS 0x05 |
| #define CMD_WRITE_ENABLE 0x06 |
| |
| #define CMD_BLOCK_ERASE 0xD8 |
| |
| /* Common status */ |
| #define STATUS_WIP 0x01 |
| |
| /* Send a single-byte command to the device and read the response */ |
| int spi_flash_cmd(const struct spi_slave *spi, u8 cmd, void *response, size_t len); |
| |
| /* |
| * Send a multi-byte command to the device followed by (optional) |
| * data. Used for programming the flash array, etc. |
| */ |
| int spi_flash_cmd_write(const struct spi_slave *spi, const u8 *cmd, |
| size_t cmd_len, const void *data, size_t data_len); |
| |
| /* Send a command to the device and wait for some bit to clear itself. */ |
| int spi_flash_cmd_poll_bit(const struct spi_flash *flash, unsigned long timeout, |
| u8 cmd, u8 poll_bit); |
| |
| /* |
| * Send the read status command to the device and wait for the wip |
| * (write-in-progress) bit to clear itself. |
| */ |
| int spi_flash_cmd_wait_ready(const struct spi_flash *flash, unsigned long timeout); |
| |
| /* Erase sectors. */ |
| int spi_flash_cmd_erase(const struct spi_flash *flash, u32 offset, size_t len); |
| |
| /* Read status register. */ |
| int spi_flash_cmd_status(const struct spi_flash *flash, u8 *reg); |
| |
| /* Write to flash utilizing page program semantics. */ |
| int spi_flash_cmd_write_page_program(const struct spi_flash *flash, u32 offset, |
| size_t len, const void *buf); |
| |
| /* Read len bytes into buf at offset. */ |
| int spi_flash_cmd_read(const struct spi_flash *flash, u32 offset, size_t len, void *buf); |
| |
| /* Release from deep sleep an provide alternative rdid information. */ |
| int stmicro_release_deep_sleep_identify(const struct spi_slave *spi, u8 *idcode); |
| |
| struct spi_flash_part_id { |
| /* rdid command constructs 2x 16-bit id using the following method |
| * for matching after reading 5 bytes (1st byte is manuf id): |
| * id[0] = (id[1] << 8) | id[2] |
| * id[1] = (id[3] << 8) | id[4] |
| */ |
| uint16_t id[2]; |
| /* Log based 2 total number of sectors. */ |
| uint16_t nr_sectors_shift: 4; |
| uint16_t fast_read_dual_output_support : 1; /* 1-1-2 read */ |
| uint16_t fast_read_dual_io_support : 1; /* 1-2-2 read */ |
| uint16_t _reserved_for_flags: 2; |
| /* Block protection. Currently used by Winbond. */ |
| uint16_t protection_granularity_shift : 5; |
| uint16_t bp_bits : 3; |
| }; |
| |
| struct spi_flash_ops_descriptor { |
| uint8_t erase_cmd; /* Sector Erase */ |
| uint8_t status_cmd; /* Read Status Register */ |
| uint8_t pp_cmd; /* Page program command, if supported. */ |
| uint8_t wren_cmd; /* Write Enable command. */ |
| struct spi_flash_ops ops; |
| }; |
| |
| /* Vendor info represents a common set of organization and commands by a given |
| * vendor. One can implement multiple sets from a single vendor by having |
| * separate objects. */ |
| struct spi_flash_vendor_info { |
| uint8_t id; |
| uint8_t page_size_shift : 4; /* if page programming oriented. */ |
| /* Log based 2 sector size */ |
| uint8_t sector_size_kib_shift : 4; |
| uint16_t nr_part_ids; |
| const struct spi_flash_part_id *ids; |
| uint16_t match_id_mask[2]; /* matching bytes of the id for this set*/ |
| const struct spi_flash_ops_descriptor *desc; |
| const struct spi_flash_protection_ops *prot_ops; |
| /* Returns 0 on success. !0 otherwise. */ |
| int (*after_probe)(const struct spi_flash *flash); |
| }; |
| |
| /* Manufacturer-specific probe information */ |
| extern const struct spi_flash_vendor_info spi_flash_adesto_vi; |
| extern const struct spi_flash_vendor_info spi_flash_amic_vi; |
| extern const struct spi_flash_vendor_info spi_flash_atmel_vi; |
| extern const struct spi_flash_vendor_info spi_flash_eon_vi; |
| extern const struct spi_flash_vendor_info spi_flash_gigadevice_vi; |
| extern const struct spi_flash_vendor_info spi_flash_macronix_vi; |
| /* Probing order matters between the spansion sequence. */ |
| extern const struct spi_flash_vendor_info spi_flash_spansion_ext1_vi; |
| extern const struct spi_flash_vendor_info spi_flash_spansion_ext2_vi; |
| extern const struct spi_flash_vendor_info spi_flash_spansion_vi; |
| extern const struct spi_flash_vendor_info spi_flash_sst_ai_vi; |
| extern const struct spi_flash_vendor_info spi_flash_sst_vi; |
| extern const struct spi_flash_vendor_info spi_flash_stmicro1_vi; |
| extern const struct spi_flash_vendor_info spi_flash_stmicro2_vi; |
| extern const struct spi_flash_vendor_info spi_flash_stmicro3_vi; |
| extern const struct spi_flash_vendor_info spi_flash_stmicro4_vi; |
| extern const struct spi_flash_vendor_info spi_flash_winbond_vi; |
| |
| /* Page Programming Command Set with 0x20 Sector Erase command. */ |
| extern const struct spi_flash_ops_descriptor spi_flash_pp_0x20_sector_desc; |
| /* Page Programming Command Set with 0xd8 Sector Erase command. */ |
| extern const struct spi_flash_ops_descriptor spi_flash_pp_0xd8_sector_desc; |
| |
| #endif /* SPI_FLASH_INTERNAL_H */ |