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1 | #ifndef _LINUX_NVRAM_H |
2 | #define _LINUX_NVRAM_H |
3 | |
4 | #include <linux/ioctl.h> |
5 | |
6 | /* /dev/nvram ioctls */ |
7 | #define NVRAM_INIT _IO('p', 0x40) /* initialize NVRAM and set checksum */ |
8 | #define NVRAM_SETCKS _IO('p', 0x41) /* recalculate checksum */ |
9 | |
10 | /* for all current systems, this is where NVRAM starts */ |
11 | #define NVRAM_FIRST_BYTE 14 |
12 | /* all these functions expect an NVRAM offset, not an absolute */ |
13 | #define NVRAM_OFFSET(x) ((x)-NVRAM_FIRST_BYTE) |
14 | |
15 | #ifdef __KERNEL__ |
16 | /* __foo is foo without grabbing the rtc_lock - get it yourself */ |
17 | extern unsigned char __nvram_read_byte(int i); |
18 | extern unsigned char nvram_read_byte(int i); |
19 | extern void __nvram_write_byte(unsigned char c, int i); |
20 | extern void nvram_write_byte(unsigned char c, int i); |
21 | extern int __nvram_check_checksum(void); |
22 | extern int nvram_check_checksum(void); |
23 | #endif |
24 | |
25 | #endif /* _LINUX_NVRAM_H */ |
26 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9