mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-26 04:49:42 +09:00
4e6a515899
This patch adds a new member to struct spi_flash (u16 sector_size) and updates the spi flash drivers to start populating it. This parameter can be used by spi flash commands that need to round up units of operation to the flash's sector_size. Having this number in one place also allows duplicated code to be further collapsed into one common location (such as erase parameter and the detected message). Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
78 lines
2.8 KiB
C
78 lines
2.8 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_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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/* 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(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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* 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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/* Send a command to the device and wait for some bit to clear itself. */
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int spi_flash_cmd_poll_bit(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(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, u8 erase_cmd,
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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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