bd9e32efdd
Pointer to spi_slave structure can be passed in as const to spi flash probe functions since the probe functions do not need to modify the slave properties. BUG=b:38330715 Change-Id: I956ee777c62dbb811fd6ce2aeb6ae090e1892acd Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/19707 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/*
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* SPI flash internal definitions
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*
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* Copyright (C) 2008 Atmel Corporation
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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 parameters -- kind of high, but they should only occur when there
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* is a problem (and well your system already is broken), so err on the side
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* of caution in case we're dealing with slower SPI buses and/or processors.
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*/
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#define CONFIG_SYS_HZ 100
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#define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ)
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#define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ)
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#define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ)
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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_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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int spi_flash_cmd_read_fast(const struct spi_flash *flash, u32 offset,
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size_t len, void *data);
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int spi_flash_cmd_read_slow(const struct spi_flash *flash, u32 offset,
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size_t len, void *data);
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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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/* Manufacturer-specific probe functions */
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int spi_flash_probe_spansion(const struct spi_slave *spi, u8 *idcode,
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struct spi_flash *flash);
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int spi_flash_probe_amic(const struct spi_slave *spi, u8 *idcode,
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struct spi_flash *flash);
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int spi_flash_probe_atmel(const struct spi_slave *spi, u8 *idcode,
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struct spi_flash *flash);
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int spi_flash_probe_eon(const struct spi_slave *spi, u8 *idcode,
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struct spi_flash *flash);
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int spi_flash_probe_macronix(const struct spi_slave *spi, u8 *idcode,
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struct spi_flash *flash);
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int spi_flash_probe_sst(const struct spi_slave *spi, u8 *idcode,
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struct spi_flash *flash);
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int spi_flash_probe_stmicro(const struct spi_slave *spi, u8 *idcode,
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struct spi_flash *flash);
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int spi_flash_probe_winbond(const struct spi_slave *spi, u8 *idcode,
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struct spi_flash *flash);
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int spi_flash_probe_gigadevice(const struct spi_slave *spi, u8 *idcode,
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struct spi_flash *flash);
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int spi_flash_probe_adesto(const struct spi_slave *spi, u8 *idcode,
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struct spi_flash *flash);
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#endif /* SPI_FLASH_INTERNAL_H */
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