1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/*
* SPI flash internal definitions
*
* Copyright (C) 2008 Atmel Corporation
*/
#ifndef SPI_FLASH_INTERNAL_H
#define SPI_FLASH_INTERNAL_H
/* 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 CONF_SYS_HZ 100
#define SPI_FLASH_PROG_TIMEOUT (2 * CONF_SYS_HZ)
#define SPI_FLASH_PAGE_ERASE_TIMEOUT (5 * CONF_SYS_HZ)
#define SPI_FLASH_SECTOR_ERASE_TIMEOUT (10 * CONF_SYS_HZ)
/* 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_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);
int spi_flash_cmd_read_fast(const struct spi_flash *flash, u32 offset,
size_t len, void *data);
int spi_flash_cmd_read_slow(const 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(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);
/* 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);
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 */
|
