| /* |
| * SPI flash internal definitions |
| * |
| * Copyright (C) 2008 Atmel Corporation |
| */ |
| |
| #ifndef SPI_FLASH_INTERNAL_H |
| #define SPI_FLASH_INTERNAL_H |
| |
| /* Common parameters -- kind of high, but they should only occur when there |
| * is a problem (and well your system already is broken), so err on the side |
| * of caution in case we're dealing with slower SPI buses and/or processors. |
| */ |
| #define CONFIG_SYS_HZ 100 |
| #define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ) |
| #define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ) |
| #define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ) |
| |
| /* 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_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); |
| |
| int spi_flash_cmd_read_fast(const struct spi_flash *flash, u32 offset, |
| size_t len, void *data); |
| |
| int spi_flash_cmd_read_slow(const struct spi_flash *flash, u32 offset, |
| size_t len, void *data); |
| |
| /* |
| * 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); |
| |
| /* Manufacturer-specific probe functions */ |
| struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode); |
| struct spi_flash *spi_flash_probe_amic(struct spi_slave *spi, u8 *idcode); |
| struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode); |
| struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode); |
| struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode); |
| struct spi_flash *spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode); |
| struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode); |
| struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode); |
| struct spi_flash *spi_flash_probe_gigadevice(struct spi_slave *spi, |
| u8 *idcode); |
| struct spi_flash *spi_flash_probe_adesto(struct spi_slave *spi, u8 *idcode); |
| struct spi_flash *spi_fram_probe_ramtron(struct spi_slave *spi, u8 *idcode); |
| |
| #endif /* SPI_FLASH_INTERNAL_H */ |