| /* |
| * This file is part of the coreboot project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| /* |
| * SPI flash internal definitions |
| */ |
| |
| #ifndef SPI_FLASH_INTERNAL_H |
| #define SPI_FLASH_INTERNAL_H |
| |
| /* 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_FAST_DUAL_OUTPUT 0x3b |
| |
| #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); |
| |
| /* |
| * 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); |
| |
| /* Write to flash utilizing page program semantics. */ |
| int spi_flash_cmd_write_page_program(const struct spi_flash *flash, u32 offset, |
| size_t len, const void *buf); |
| |
| /* Manufacturer-specific probe functions */ |
| int spi_flash_probe_spansion(const struct spi_slave *spi, u8 *idcode, |
| struct spi_flash *flash); |
| int spi_flash_probe_amic(const struct spi_slave *spi, u8 *idcode, |
| struct spi_flash *flash); |
| int spi_flash_probe_atmel(const struct spi_slave *spi, u8 *idcode, |
| struct spi_flash *flash); |
| int spi_flash_probe_eon(const struct spi_slave *spi, u8 *idcode, |
| struct spi_flash *flash); |
| int spi_flash_probe_macronix(const struct spi_slave *spi, u8 *idcode, |
| struct spi_flash *flash); |
| int spi_flash_probe_sst(const struct spi_slave *spi, u8 *idcode, |
| struct spi_flash *flash); |
| int spi_flash_probe_stmicro(const struct spi_slave *spi, u8 *idcode, |
| struct spi_flash *flash); |
| /* Release from deep sleep an provide alternative rdid information. */ |
| int stmicro_release_deep_sleep_identify(const struct spi_slave *spi, u8 *idcode); |
| int spi_flash_probe_winbond(const struct spi_slave *spi, u8 *idcode, |
| struct spi_flash *flash); |
| int spi_flash_probe_gigadevice(const struct spi_slave *spi, u8 *idcode, |
| struct spi_flash *flash); |
| int spi_flash_probe_adesto(const struct spi_slave *spi, u8 *idcode, |
| struct spi_flash *flash); |
| |
| #endif /* SPI_FLASH_INTERNAL_H */ |