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| author | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
| commit | 97327692361306d1e6259021bc425e32832fdb50 (patch) | |
| tree | fe9088f3248ec61e24f404f21b9793cb644b7f01 /include/linux/nvram.h | |
| parent | 2d05a8f663478a44e088d122e0d62109bbc801d0 (diff) | |
| parent | a3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff) | |
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dirty fix to merging
Diffstat (limited to 'include/linux/nvram.h')
| -rw-r--r-- | include/linux/nvram.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/nvram.h b/include/linux/nvram.h new file mode 100644 index 00000000..9189829c --- /dev/null +++ b/include/linux/nvram.h @@ -0,0 +1,25 @@ +#ifndef _LINUX_NVRAM_H +#define _LINUX_NVRAM_H + +#include <linux/ioctl.h> + +/* /dev/nvram ioctls */ +#define NVRAM_INIT _IO('p', 0x40) /* initialize NVRAM and set checksum */ +#define NVRAM_SETCKS _IO('p', 0x41) /* recalculate checksum */ + +/* for all current systems, this is where NVRAM starts */ +#define NVRAM_FIRST_BYTE 14 +/* all these functions expect an NVRAM offset, not an absolute */ +#define NVRAM_OFFSET(x) ((x)-NVRAM_FIRST_BYTE) + +#ifdef __KERNEL__ +/* __foo is foo without grabbing the rtc_lock - get it yourself */ +extern unsigned char __nvram_read_byte(int i); +extern unsigned char nvram_read_byte(int i); +extern void __nvram_write_byte(unsigned char c, int i); +extern void nvram_write_byte(unsigned char c, int i); +extern int __nvram_check_checksum(void); +extern int nvram_check_checksum(void); +#endif + +#endif /* _LINUX_NVRAM_H */ |