mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-03 18:10:13 +00:00
41e1713425
The only two drivers to write the status register do it in the same way, so unify the implementations. This also makes the block unlock logic the same. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
108 lines
3.6 KiB
C
108 lines
3.6 KiB
C
/*
|
|
* SPI flash internal definitions
|
|
*
|
|
* Copyright (C) 2008 Atmel Corporation
|
|
*/
|
|
|
|
/* Common parameters -- kind of high, but they should only occur when there
|
|
* is a problem (and well your system already is broken), so err on the side
|
|
* of caution in case we're dealing with slower SPI buses and/or processors.
|
|
*/
|
|
#define SPI_FLASH_PROG_TIMEOUT (2 * CONFIG_SYS_HZ)
|
|
#define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONFIG_SYS_HZ)
|
|
#define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONFIG_SYS_HZ)
|
|
|
|
/* Common commands */
|
|
#define CMD_READ_ID 0x9f
|
|
|
|
#define CMD_READ_ARRAY_SLOW 0x03
|
|
#define CMD_READ_ARRAY_FAST 0x0b
|
|
|
|
#define CMD_WRITE_STATUS 0x01
|
|
#define CMD_PAGE_PROGRAM 0x02
|
|
#define CMD_WRITE_DISABLE 0x04
|
|
#define CMD_READ_STATUS 0x05
|
|
#define CMD_WRITE_ENABLE 0x06
|
|
#define CMD_ERASE_4K 0x20
|
|
#define CMD_ERASE_32K 0x52
|
|
#define CMD_ERASE_64K 0xd8
|
|
#define CMD_ERASE_CHIP 0xc7
|
|
|
|
/* Common status */
|
|
#define STATUS_WIP 0x01
|
|
|
|
/* Send a single-byte command to the device and read the response */
|
|
int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);
|
|
|
|
/*
|
|
* Send a multi-byte command to the device and read the response. Used
|
|
* for flash array reads, etc.
|
|
*/
|
|
int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
|
|
size_t cmd_len, void *data, size_t data_len);
|
|
|
|
int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset,
|
|
size_t len, void *data);
|
|
|
|
/*
|
|
* Send a multi-byte command to the device followed by (optional)
|
|
* data. Used for programming the flash array, etc.
|
|
*/
|
|
int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
|
|
const void *data, size_t data_len);
|
|
|
|
/*
|
|
* Write the requested data out breaking it up into multiple write
|
|
* commands as needed per the write size.
|
|
*/
|
|
int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset,
|
|
size_t len, const void *buf);
|
|
|
|
/*
|
|
* Enable writing on the SPI flash.
|
|
*/
|
|
static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
|
|
{
|
|
return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0);
|
|
}
|
|
|
|
/*
|
|
* Disable writing on the SPI flash.
|
|
*/
|
|
static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
|
|
{
|
|
return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0);
|
|
}
|
|
|
|
/* Program the status register. */
|
|
int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr);
|
|
|
|
/*
|
|
* Same as spi_flash_cmd_read() except it also claims/releases the SPI
|
|
* bus. Used as common part of the ->read() operation.
|
|
*/
|
|
int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
|
|
size_t cmd_len, 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(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(struct spi_flash *flash, unsigned long timeout);
|
|
|
|
/* Erase sectors. */
|
|
int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len);
|
|
|
|
/* Manufacturer-specific probe functions */
|
|
struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode);
|
|
struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode);
|
|
struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode);
|
|
struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode);
|
|
struct spi_flash *spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode);
|
|
struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode);
|
|
struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode);
|
|
struct spi_flash *spi_fram_probe_ramtron(struct spi_slave *spi, u8 *idcode);
|