EFUSE

efuse functions More...

Ameba Common
int	efuse_get_remaining_length (void)
	Get remaining efuse length. More...
void	efuse_mtp_read (uint8_t *data)
	Read efuse contant of specified user. More...
int	efuse_mtp_write (uint8_t *data, uint8_t len)
	Write user's contant to efuse. More...
int	efuse_otp_read (u8 address, u8 len, u8 *buf)
	Read efuse OTP contant. More...
int	efuse_otp_write (u8 address, u8 len, u8 *buf)
	Write user's contant to OTP efuse. More...
int	efuse_otp_chk (u8 len, u8 *buf)
	ckeck user's contant to OTP efuse More...
int	efuse_disable_jtag (void)
	Disable jtag. More...

Ameba1 Only
int	efuse_key1_write (u8 address, u8 len, u8 *buf)
	Write key1 to efuse. More...
int	efuse_key2_write (u8 address, u8 len, u8 *buf)
	Write key2 to efuse. More...

AmebaZ Only
void	efuse_rdp_enable (void)
	Set RDP Enable. More...
void	efuse_rdp_keyset (u8 *rdp_key)
	Set 16B RDP key into EFUSE. More...
void	efuse_otf_keyset (u8 *otf_key)
	Set 16B OTF key into EFUSE. More...

Detailed Description

efuse functions

Function Documentation

int efuse_disable_jtag

(

void

)

Disable jtag.

Return values

0

Success

int efuse_get_remaining_length

(

void

)

Get remaining efuse length.

Return values

remaining efuse length

int efuse_key1_write	(	u8	address,
		u8	len,
		u8 *	buf
	)

Write key1 to efuse.

Parameters

address	Specifies the offset of the programmed efuse.
len	Specifies the data length of programmed data.
buf	Specified the data to be programmed.

Return values

0	Success
-1	Failure

int efuse_key2_write	(	u8	address,
		u8	len,
		u8 *	buf
	)

Write key2 to efuse.

Parameters

address	Specifies the offset of the programmed efuse.
len	Specifies the data length of programmed data.
buf	Specified the data to be programmed.

Return values

0	Success
-1	Failure

void efuse_mtp_read

(

uint8_t *

data

)

Read efuse contant of specified user.

Parameters

data	Specified the address to save the readback data.

Return values

none

int efuse_mtp_write	(	uint8_t *	data,
		uint8_t	len
	)

Write user's contant to efuse.

Parameters

data	Specified the data to be programmed.
len	Specifies the data length of programmed data.

Return values

value

0~32: Success -1: Failure

void efuse_otf_keyset

(

u8 *

otf_key

)

Set 16B OTF key into EFUSE.

Parameters

OtfKey

16B EFUSE KEY

Note

can not change or read back after write.

int efuse_otp_chk	(	u8	len,
		u8 *	buf
	)

ckeck user's contant to OTP efuse

Parameters

buf	Specified the data to be programmed.
len	Specifies the data length of programmed data.

Return values

0	Success
-1	Failure

int efuse_otp_read	(	u8	address,
		u8	len,
		u8 *	buf
	)

Read efuse OTP contant.

Parameters

address	Specifies the offset of the OTP.
len	Specifies the length of readback data.
buf	Specified the address to save the readback data.

Return values

0	Success
-1	Failure

int efuse_otp_write	(	u8	address,
		u8	len,
		u8 *	buf
	)

Write user's contant to OTP efuse.

Parameters

address	Specifies the offset of the programmed OTP.
len	Specifies the data length of programmed data.
buf	Specified the data to be programmed.

Return values

0	Success
-1	Failure

void efuse_rdp_enable

(

void

)

Set RDP Enable.

Parameters

none

Note

can not change or read back after write.

void efuse_rdp_keyset

(

u8 *

rdp_key

)

Set 16B RDP key into EFUSE.

Parameters

rdp_key

16B EFUSE KEY

Note

can not change or read back after write.