mirror of
https://github.com/AsahiLinux/u-boot
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140 lines
4.5 KiB
C
140 lines
4.5 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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/* 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 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_WRITE_STATUS 0x01
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#define CMD_PAGE_PROGRAM 0x02
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#define CMD_WRITE_DISABLE 0x04
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#define CMD_READ_STATUS 0x05
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#define CMD_FLAG_STATUS 0x70
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#define CMD_WRITE_ENABLE 0x06
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#define CMD_ERASE_4K 0x20
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#define CMD_ERASE_32K 0x52
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#define CMD_ERASE_64K 0xd8
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#define CMD_ERASE_CHIP 0xc7
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#define SPI_FLASH_16MB_BOUN 0x1000000
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/* Manufacture ID's */
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#define SPI_FLASH_SPANSION_IDCODE0 0x01
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#define SPI_FLASH_STMICRO_IDCODE0 0x20
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#define SPI_FLASH_WINBOND_IDCODE0 0xef
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#ifdef CONFIG_SPI_FLASH_BAR
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/* Bank addr access commands */
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# define CMD_BANKADDR_BRWR 0x17
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# define CMD_BANKADDR_BRRD 0x16
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# define CMD_EXTNADDR_WREAR 0xC5
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# define CMD_EXTNADDR_RDEAR 0xC8
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#endif
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/* Common status */
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#define STATUS_WIP 0x01
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#define STATUS_PEC 0x80
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/* Send a single-byte command to the device and read the response */
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int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);
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/*
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* Send a multi-byte command to the device and read the response. Used
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* for flash array reads, etc.
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*/
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int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
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size_t cmd_len, void *data, size_t data_len);
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int spi_flash_cmd_read_fast(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(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
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const void *data, size_t data_len);
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/*
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* Write the requested data out breaking it up into multiple write
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* commands as needed per the write size.
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*/
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int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset,
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size_t len, const void *buf);
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/*
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* Enable writing on the SPI flash.
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*/
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static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
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{
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return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0);
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}
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/*
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* Disable writing on the SPI flash.
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*/
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static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
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{
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return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0);
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}
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/* Program the status register. */
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int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr);
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#ifdef CONFIG_SPI_FLASH_BAR
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/* Program the bank address register */
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int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel);
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/* Configure the BAR - discover the bank cmds */
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int spi_flash_bank_config(struct spi_flash *flash, u8 idcode0);
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#endif
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/*
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* Same as spi_flash_cmd_read() except it also claims/releases the SPI
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* bus. Used as common part of the ->read() operation.
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*/
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int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
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size_t cmd_len, void *data, size_t data_len);
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/*
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* Used for spi_flash write operation
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* - SPI claim
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* - spi_flash_cmd_write_enable
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* - spi_flash_cmd_write
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* - spi_flash_cmd_wait_ready
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* - SPI release
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*/
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int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
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size_t cmd_len, const void *buf, size_t buf_len);
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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(struct spi_flash *flash, unsigned long timeout);
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/* Erase sectors. */
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int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len);
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/* Manufacturer-specific probe functions */
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struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode);
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struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode);
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struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode);
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struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode);
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struct spi_flash *spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode);
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struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode);
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struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode);
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struct spi_flash *spi_fram_probe_ramtron(struct spi_slave *spi, u8 *idcode);
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struct spi_flash *spi_flash_probe_gigadevice(struct spi_slave *spi, u8 *idcode);
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