blob: a1e01dc8975906af2c9301704f5d62d9e2563d4f (
plain)
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
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_NVRAM_H
#define _LINUX_NVRAM_H
#include <linux/errno.h>
#include <uapi/linux/nvram.h>
struct nvram_ops {
ssize_t (*get_size)(void);
ssize_t (*read)(char *, size_t, loff_t *);
ssize_t (*write)(char *, size_t, loff_t *);
};
extern const struct nvram_ops arch_nvram_ops;
static inline ssize_t nvram_get_size(void)
{
if (arch_nvram_ops.get_size)
return arch_nvram_ops.get_size();
return -ENODEV;
}
static inline unsigned char nvram_read_byte(int addr)
{
return 0xFF;
}
static inline void nvram_write_byte(unsigned char val, int addr)
{
}
static inline ssize_t nvram_read(char *buf, size_t count, loff_t *ppos)
{
if (arch_nvram_ops.read)
return arch_nvram_ops.read(buf, count, ppos);
return -ENODEV;
}
static inline ssize_t nvram_write(char *buf, size_t count, loff_t *ppos)
{
if (arch_nvram_ops.write)
return arch_nvram_ops.write(buf, count, ppos);
return -ENODEV;
}
#endif /* _LINUX_NVRAM_H */
|
