1 /* 2 * SPI flash internal definitions 3 * 4 * Copyright (C) 2008 Atmel Corporation 5 */ 6 7 /* Common parameters -- kind of high, but they should only occur when there 8 * is a problem (and well your system already is broken), so err on the side 9 * of caution in case we're dealing with slower SPI buses and/or processors. 10 */ 11 #define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ) 12 #define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ) 13 #define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ) 14 15 /* Common commands */ 16 #define CMD_READ_ID 0x9f 17 18 #define CMD_READ_ARRAY_SLOW 0x03 19 #define CMD_READ_ARRAY_FAST 0x0b 20 #define CMD_READ_ARRAY_LEGACY 0xe8 21 22 /* Send a single-byte command to the device and read the response */ 23 int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len); 24 25 /* 26 * Send a multi-byte command to the device and read the response. Used 27 * for flash array reads, etc. 28 */ 29 int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd, 30 size_t cmd_len, void *data, size_t data_len); 31 32 /* 33 * Send a multi-byte command to the device followed by (optional) 34 * data. Used for programming the flash array, etc. 35 */ 36 int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len, 37 const void *data, size_t data_len); 38 39 /* 40 * Same as spi_flash_cmd_read() except it also claims/releases the SPI 41 * bus. Used as common part of the ->read() operation. 42 */ 43 int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, 44 size_t cmd_len, void *data, size_t data_len); 45 46 /* Manufacturer-specific probe functions */ 47 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode); 48 struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode); 49 struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode); 50 struct spi_flash *spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode); 51 struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode); 52 struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode); 53