nvram.h

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#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 */


// Getters 
#define NVRAM_COMMIT                _IO('p', 0x42)
#define NVRAM_GET_SERIAL            _IO('p', 0x43)
#define NVRAM_GET_SERIAL_SIG        _IO('p', 0x44)
#define NVRAM_GET_RSA_PUBLIC1       _IO('p', 0x45)
#define NVRAM_GET_RSA_PUBLIC2       _IO('p', 0x46)
#define NVRAM_GET_DIVX_DATA         _IO('p', 0x47)
#define NVRAM_GET_RSA_DEV_PRIVATE   _IO('p', 0x48)
#define NVRAM_GET_RSA_DEV_PUBLIC    _IO('p', 0x49)
#define NVRAM_GET_MANUFACTURER      _IO('p', 0x50)
#define NVRAM_GET_MODEL_ID          _IO('p', 0x51)
#define NVRAM_GET_MASS_STORAGE_NUM  _IO('p', 0x52)
#define NVRAM_GET_AES_KEY_1         _IO('p', 0x53)
#define NVRAM_GET_AES_KEY_2         _IO('p', 0x54)
#define NVRAM_GET_DIVX_MODEL_ID     _IO('p', 0x55)


// Setters
#define NVRAM_SET_SERIAL            _IO('p', 0x56)
#define NVRAM_SET_SERIAL_SIG        _IO('p', 0x57)
#define NVRAM_SET_RSA_PUBLIC1       _IO('p', 0x58)
#define NVRAM_SET_RSA_PUBLIC2       _IO('p', 0x59)
#define NVRAM_SET_DIVX_DATA         _IO('p', 0x60)
#define NVRAM_SET_RSA_DEV_PRIVATE   _IO('p', 0x61)
#define NVRAM_SET_RSA_DEV_PUBLIC    _IO('p', 0x62)
#define NVRAM_SET_MANUFACTURER      _IO('p', 0x63)
#define NVRAM_SET_MODEL_ID          _IO('p', 0x64)
#define NVRAM_SET_MASS_STORAGE_NUM  _IO('p', 0x65)
#define NVRAM_SET_AES_KEY_1         _IO('p', 0x66)
#define NVRAM_SET_AES_KEY_2         _IO('p', 0x67)
#define NVRAM_SET_DIVX_MODEL_ID     _IO('p', 0x68)

#define NVRAM_RESET_ALL             _IO('p', 0x69)

// Strings are may not be zero terminated
#define ANCHOR_SIZE 12
#define SERIAL_NUM_SIZE 32
#define SERIAL_NUM_SIG_SIZE 20
#define RSA_KEY_SIZE 128
#define DIVX_STORE_SIZE 48
#define MANUF_SIZE 40
#define MODEL_ID_SIZE 40
#define STORAGE_SERIAL_NUM_SIZE 64
#define AES_SECRET_SIZE 16
#define DIVX_MODEL_SIZE 2

#define RESERVED_SIZE NVRAM_PUBLIC_OFFSET -  (ANCHOR_SIZE+SERIAL_NUM_SIZE+SERIAL_NUM_SIG_SIZE+(RSA_KEY_SIZE*4)+\
        DIVX_STORE_SIZE+MANUF_SIZE+MODEL_ID_SIZE+STORAGE_SERIAL_NUM_SIZE+(2*AES_SECRET_SIZE)+DIVX_MODEL_SIZE)


#endif

#ifdef CONFIG_AU1XXX_NVRAM
/* 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);
extern void __nvram_set_checksum(void);
extern void nvram_set_checksum(void);
#endif

#endif  /* _LINUX_NVRAM_H */