2 * SPI flash internal definitions
4 * Copyright (C) 2008 Atmel Corporation
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.
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)
16 #define CMD_READ_ID 0x9f
18 #define CMD_READ_ARRAY_SLOW 0x03
19 #define CMD_READ_ARRAY_FAST 0x0b
20 #define CMD_READ_ARRAY_LEGACY 0xe8
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);
26 * Send a multi-byte command to the device and read the response. Used
27 * for flash array reads, etc.
29 int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
30 size_t cmd_len, void *data, size_t data_len);
33 * Send a multi-byte command to the device followed by (optional)
34 * data. Used for programming the flash array, etc.
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);
40 * Same as spi_flash_cmd_read() except it also claims/releases the SPI
41 * bus. Used as common part of the ->read() operation.
43 int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
44 size_t cmd_len, void *data, size_t data_len);
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_sst(struct spi_slave *spi, u8 *idcode);
50 struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode);