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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2011-05-08 22:45:06 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2011-05-08 22:45:06 +0200 |
| commit | 878c5456c5a2f9bff741a7b7bcdccd5c1694db22 (patch) | |
| tree | bcf3d101215fa70b953aa7e9d0de805c5f8865b4 /libdde_linux26/contrib/include/linux/nvram.h | |
| parent | 9062642230b7bfb48e7b30f98cba8528172b2d36 (diff) | |
| parent | c8f311a7a32d4b0cb0c21672f63bca8efdf5d83a (diff) | |
Merge branch 'dde' into HEAD
Diffstat (limited to 'libdde_linux26/contrib/include/linux/nvram.h')
| -rw-r--r-- | libdde_linux26/contrib/include/linux/nvram.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/libdde_linux26/contrib/include/linux/nvram.h b/libdde_linux26/contrib/include/linux/nvram.h new file mode 100644 index 00000000..9189829c --- /dev/null +++ b/libdde_linux26/contrib/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 */ |