6b5bc77c9b
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129 lines
4.7 KiB
C
129 lines
4.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* SPI flash internal definitions
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*/
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#ifndef SPI_FLASH_INTERNAL_H
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#define SPI_FLASH_INTERNAL_H
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/* Common commands */
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#define CMD_READ_ID 0x9f
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#define CMD_READ_ARRAY_SLOW 0x03
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#define CMD_READ_ARRAY_FAST 0x0b
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#define CMD_READ_ARRAY_LEGACY 0xe8
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#define CMD_READ_FAST_DUAL_OUTPUT 0x3b
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#define CMD_READ_STATUS 0x05
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#define CMD_WRITE_ENABLE 0x06
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#define CMD_BLOCK_ERASE 0xD8
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/* Common status */
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#define STATUS_WIP 0x01
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/* Send a single-byte command to the device and read the response */
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int spi_flash_cmd(const struct spi_slave *spi, u8 cmd, void *response, size_t len);
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/*
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* Send a multi-byte command to the device followed by (optional)
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* data. Used for programming the flash array, etc.
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*/
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int spi_flash_cmd_write(const struct spi_slave *spi, const u8 *cmd,
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size_t cmd_len, const void *data, size_t data_len);
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/* Send a command to the device and wait for some bit to clear itself. */
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int spi_flash_cmd_poll_bit(const struct spi_flash *flash, unsigned long timeout,
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u8 cmd, u8 poll_bit);
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/*
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* Send the read status command to the device and wait for the wip
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* (write-in-progress) bit to clear itself.
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*/
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int spi_flash_cmd_wait_ready(const struct spi_flash *flash, unsigned long timeout);
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/* Erase sectors. */
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int spi_flash_cmd_erase(const struct spi_flash *flash, u32 offset, size_t len);
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/* Read status register. */
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int spi_flash_cmd_status(const struct spi_flash *flash, u8 *reg);
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/* Write to flash utilizing page program semantics. */
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int spi_flash_cmd_write_page_program(const struct spi_flash *flash, u32 offset,
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size_t len, const void *buf);
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/* Read len bytes into buf at offset. */
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int spi_flash_cmd_read(const struct spi_flash *flash, u32 offset, size_t len, void *buf);
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/* Release from deep sleep an provide alternative rdid information. */
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int stmicro_release_deep_sleep_identify(const struct spi_slave *spi, u8 *idcode);
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struct spi_flash_part_id {
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/* rdid command constructs 2x 16-bit id using the following method
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* for matching after reading 5 bytes (1st byte is manuf id):
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* id[0] = (id[1] << 8) | id[2]
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* id[1] = (id[3] << 8) | id[4]
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*/
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uint16_t id[2];
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/* Log based 2 total number of sectors. */
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uint16_t nr_sectors_shift: 4;
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uint16_t fast_read_dual_output_support : 1;
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uint16_t _reserved_for_flags: 3;
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/* Block protection. Currently used by Winbond. */
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uint16_t protection_granularity_shift : 5;
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uint16_t bp_bits : 3;
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};
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struct spi_flash_ops_descriptor {
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uint8_t erase_cmd; /* Sector Erase */
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uint8_t status_cmd; /* Read Status Register */
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uint8_t pp_cmd; /* Page program command, if supported. */
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uint8_t wren_cmd; /* Write Enable command. */
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struct spi_flash_ops ops;
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};
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/* Vendor info represents a common set of organization and commands by a given
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* vendor. One can implement multiple sets from a single vendor by having
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* separate objects. */
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struct spi_flash_vendor_info {
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uint8_t id;
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uint8_t page_size_shift : 4; /* if page programming oriented. */
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/* Log based 2 sector size */
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uint8_t sector_size_kib_shift : 4;
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uint16_t nr_part_ids;
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const struct spi_flash_part_id *ids;
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uint16_t match_id_mask[2]; /* matching bytes of the id for this set*/
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const struct spi_flash_ops_descriptor *desc;
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const struct spi_flash_protection_ops *prot_ops;
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/* Returns 0 on success. !0 otherwise. */
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int (*after_probe)(const struct spi_flash *flash);
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};
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/* Manufacturer-specific probe information */
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extern const struct spi_flash_vendor_info spi_flash_adesto_vi;
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extern const struct spi_flash_vendor_info spi_flash_amic_vi;
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extern const struct spi_flash_vendor_info spi_flash_atmel_vi;
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extern const struct spi_flash_vendor_info spi_flash_eon_vi;
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extern const struct spi_flash_vendor_info spi_flash_gigadevice_vi;
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extern const struct spi_flash_vendor_info spi_flash_macronix_vi;
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/* Probing order matters between the spansion sequence. */
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extern const struct spi_flash_vendor_info spi_flash_spansion_ext1_vi;
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extern const struct spi_flash_vendor_info spi_flash_spansion_ext2_vi;
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extern const struct spi_flash_vendor_info spi_flash_spansion_vi;
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extern const struct spi_flash_vendor_info spi_flash_sst_ai_vi;
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extern const struct spi_flash_vendor_info spi_flash_sst_vi;
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extern const struct spi_flash_vendor_info spi_flash_stmicro1_vi;
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extern const struct spi_flash_vendor_info spi_flash_stmicro2_vi;
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extern const struct spi_flash_vendor_info spi_flash_stmicro3_vi;
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extern const struct spi_flash_vendor_info spi_flash_stmicro4_vi;
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extern const struct spi_flash_vendor_info spi_flash_winbond_vi;
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/* Page Programming Command Set with 0x20 Sector Erase command. */
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extern const struct spi_flash_ops_descriptor spi_flash_pp_0x20_sector_desc;
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/* Page Programming Command Set with 0xd8 Sector Erase command. */
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extern const struct spi_flash_ops_descriptor spi_flash_pp_0xd8_sector_desc;
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#endif /* SPI_FLASH_INTERNAL_H */
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