1
2
3
4
5
6
7
8
9#ifndef _SPI_FLASH_H_
10#define _SPI_FLASH_H_
11
12#include <dm.h>
13#include <linux/types.h>
14#include <linux/mtd/spi-nor.h>
15
16
17#ifndef CONFIG_ENV_SPI_BUS
18# define CONFIG_ENV_SPI_BUS CONFIG_SF_DEFAULT_BUS
19#endif
20#ifndef CONFIG_ENV_SPI_CS
21# define CONFIG_ENV_SPI_CS CONFIG_SF_DEFAULT_CS
22#endif
23#ifndef CONFIG_ENV_SPI_MAX_HZ
24# define CONFIG_ENV_SPI_MAX_HZ CONFIG_SF_DEFAULT_SPEED
25#endif
26#ifndef CONFIG_ENV_SPI_MODE
27# define CONFIG_ENV_SPI_MODE CONFIG_SF_DEFAULT_MODE
28#endif
29
30struct spi_slave;
31
32struct dm_spi_flash_ops {
33 int (*read)(struct udevice *dev, u32 offset, size_t len, void *buf);
34 int (*write)(struct udevice *dev, u32 offset, size_t len,
35 const void *buf);
36 int (*erase)(struct udevice *dev, u32 offset, size_t len);
37
38
39
40
41
42
43
44
45
46
47
48
49 int (*get_sw_write_prot)(struct udevice *dev);
50};
51
52
53#define sf_get_ops(dev) ((struct dm_spi_flash_ops *)(dev)->driver->ops)
54
55#ifdef CONFIG_DM_SPI_FLASH
56
57
58
59
60
61
62
63
64
65int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf);
66
67
68
69
70
71
72
73
74
75
76int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
77 const void *buf);
78
79
80
81
82
83
84
85
86
87
88
89int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len);
90
91
92
93
94
95
96
97
98
99
100
101
102
103int spl_flash_get_sw_write_prot(struct udevice *dev);
104
105
106
107
108
109
110
111
112
113
114
115int spi_flash_std_probe(struct udevice *dev);
116
117int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
118 unsigned int max_hz, unsigned int spi_mode,
119 struct udevice **devp);
120
121
122struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
123 unsigned int max_hz, unsigned int spi_mode);
124
125
126void spi_flash_free(struct spi_flash *flash);
127
128static inline int spi_flash_read(struct spi_flash *flash, u32 offset,
129 size_t len, void *buf)
130{
131 return spi_flash_read_dm(flash->dev, offset, len, buf);
132}
133
134static inline int spi_flash_write(struct spi_flash *flash, u32 offset,
135 size_t len, const void *buf)
136{
137 return spi_flash_write_dm(flash->dev, offset, len, buf);
138}
139
140static inline int spi_flash_erase(struct spi_flash *flash, u32 offset,
141 size_t len)
142{
143 return spi_flash_erase_dm(flash->dev, offset, len);
144}
145
146struct sandbox_state;
147
148int sandbox_sf_bind_emul(struct sandbox_state *state, int busnum, int cs,
149 struct udevice *bus, ofnode node, const char *spec);
150
151void sandbox_sf_unbind_emul(struct sandbox_state *state, int busnum, int cs);
152
153#else
154struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
155 unsigned int max_hz, unsigned int spi_mode);
156
157void spi_flash_free(struct spi_flash *flash);
158
159static inline int spi_flash_read(struct spi_flash *flash, u32 offset,
160 size_t len, void *buf)
161{
162 struct mtd_info *mtd = &flash->mtd;
163 size_t retlen;
164
165 return mtd->_read(mtd, offset, len, &retlen, buf);
166}
167
168static inline int spi_flash_write(struct spi_flash *flash, u32 offset,
169 size_t len, const void *buf)
170{
171 struct mtd_info *mtd = &flash->mtd;
172 size_t retlen;
173
174 return mtd->_write(mtd, offset, len, &retlen, buf);
175}
176
177static inline int spi_flash_erase(struct spi_flash *flash, u32 offset,
178 size_t len)
179{
180 struct mtd_info *mtd = &flash->mtd;
181 struct erase_info instr;
182
183 if (offset % mtd->erasesize || len % mtd->erasesize) {
184 printf("SF: Erase offset/length not multiple of erase size\n");
185 return -EINVAL;
186 }
187
188 memset(&instr, 0, sizeof(instr));
189 instr.addr = offset;
190 instr.len = len;
191
192 return mtd->_erase(mtd, &instr);
193}
194#endif
195
196static inline int spi_flash_protect(struct spi_flash *flash, u32 ofs, u32 len,
197 bool prot)
198{
199 if (!flash->flash_lock || !flash->flash_unlock)
200 return -EOPNOTSUPP;
201
202 if (prot)
203 return flash->flash_lock(flash, ofs, len);
204 else
205 return flash->flash_unlock(flash, ofs, len);
206}
207
208#endif
209