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polyfractal 2016-12-30 18:23:32 -05:00
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component/common/mbed/targets/hal/rtl8195a/efuse_api.c Normal file
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/* mbed Microcontroller Library
*******************************************************************************
* Copyright (c) 2014, Realtek Semiconductor Corp.
* All rights reserved.
*
* This module is a confidential and proprietary property of RealTek and
* possession or use of this module requires written permission of RealTek.
*******************************************************************************
*/
#include "rtl8195a.h"
#ifdef CONFIG_EFUSE_EN
extern VOID ReadEfuseContant1(OUT u8 *pContant);
extern u8 WriteEfuseContant1(IN u8 CodeWordNum, IN u8 WordEnable, IN u8 *pContant);
extern VOID ReadEOTPContant(OUT u8 *pContant);
extern VOID WriteEOTPContant(IN u8 *pContant);
extern u8 GetRemainingEfuseLength(void);
extern VOID HALJtagOff(VOID);
/**
* @brief get remaining efuse length
* @retval remaining efuse length
*/
int efuse_get_remaining_length(void)
{
return GetRemainingEfuseLength();
}
/**
* @brief Read efuse contant of specified user
* @param data: Specified the address to save the readback data.
*/
void efuse_mtp_read(uint8_t * data)
{
ReadEfuseContant1(data);
return;
}
/**
* @brief Write user's contant to efuse
* @param *data: Specified the data to be programmed.
* @param len: Specifies the data length of programmed data.
* @retval status: Success:0~32 or Failure: -1.
*/
int efuse_mtp_write(uint8_t *data, uint8_t len)
{
u8 len_low, len_high, word_enable = 0;
if( (len & 0x01) == 1)
len += 1;
if(len > 32){
return -1;
}
if(len == 0){
return 0;
}
len_low = len & 0x07;
len_high = (len >> 3) & 0x07;
if(len_low == 0)
word_enable = 0;
else if(len_low == 2)
word_enable = 1;
else if(len_low == 4)
word_enable = 3;
else if(len_low == 6)
word_enable = 7;
switch (len_high){
case 0:
WriteEfuseContant1(0, word_enable, data);
break;
case 1:
WriteEfuseContant1(0, 0xf, data);
WriteEfuseContant1(1, word_enable, data+8);
break;
case 2:
WriteEfuseContant1(0, 0xf, data);
WriteEfuseContant1(1, 0xf, data+8);
WriteEfuseContant1(2, word_enable, data+8);
break;
case 3:
WriteEfuseContant1(0, 0xf, data);
WriteEfuseContant1(1, 0xf, data+8);
WriteEfuseContant1(2, 0xf, data+16);
WriteEfuseContant1(3, word_enable, data+24);
break;
case 4:
WriteEfuseContant1(0, 0xf, data);
WriteEfuseContant1(1, 0xf, data+8);
WriteEfuseContant1(2, 0xf, data+16);
WriteEfuseContant1(3, 0xf, data+24);
}
return len;
}
/**
* @brief Read efuse OTP contant
* @param address: Specifies the offset of the OTP.
* @param len: Specifies the length of readback data.
* @param buf: Specified the address to save the readback data.
*/
int efuse_otp_read(u8 address, u8 len, u8 *buf)
{
u8 content[32]; // the OTP max length is 32
if((address+len) > 32)
return -1;
ReadEOTPContant(content);
_memcpy(buf, content+address, len);
return 0;
}
/**
* @brief Write user's contant to OTP efuse
* @param address: Specifies the offset of the programmed OTP.
* @param len: Specifies the data length of programmed data.
* @param *buf: Specified the data to be programmed.
* @retval status: Success:0 or Failure: -1.
*/
int efuse_otp_write(u8 address, u8 len, u8 *buf)
{
u8 content[32]; // the OTP max length is 32
if((address+len) > 32)
return -1;
_memset(content, 0xFF, 32);
_memcpy(content+address, buf, len);
WriteEOTPContant(content);
return 0;
}
/**
* @brief Disable jtag
*/
int efuse_disable_jtag(void)
{
HALJtagOff();
return 0;
}
#endif