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/*
* Copyright 2018 AllWinnertech Co., Ltd
* [email protected]
*/
#include <stdio.h>
#include <string.h>
#include <sunxi_hal_efuse.h>
#include <sunxi_hal_common.h>
#include "platform_efuse.h"
#include "efuse.h"
#if (EFUSE_DBG_EN & (CONFIG_LOG_DEFAULT_LEVEL != 0))
#define EFUSE_DBG(fmt,args...) printf(fmt ,##args)
#define EFUSE_DUMP_LEN 16
#define EFUSE_DBG_DUMP(key_name, key_data, key_len) efuse_dump(key_name, key_data, key_len, EFUSE_DUMP_LEN)
#else
#define EFUSE_DBG(fmt,args...)
#define EFUSE_DBG_DUMP(...) do{} while(0);
#endif
#if EFUSE_DBG_EN
static void efuse_dump(char *str,unsigned char *data,\
int len, int align)
{
int i = 0;
if(str)
printf("\n%s: ",str);
for(i = 0; i<len; i++)
{
if((i%align) == 0)
{
printf("\n");
}
printf("%02x ",*(data++));
}
printf("\n");
}
#endif
int hal_efuse_write(char *key_name, unsigned char *key_data, size_t key_bit_len)
{
unsigned long k_src = 0;
unsigned int niddle = 0,tmp_data = 0,k_d_lft = 0 ;
size_t key_len = key_bit_len>>3;
efuse_key_map_new_t *key_map;
int ret;
if ((strlen(key_name) == 0)|| (key_len == 0) || ((unsigned long)key_data%4 != 0))
return EFUSE_ERR_ARG;
key_map = efuse_search_key_by_name(key_name);
if (((unsigned int)key_map->size >> 3) < key_len) {
EFUSE_DBG("key name = %s\n", key_map->name);
return EFUSE_ERR_KEY_SIZE_TOO_BIG;
}
if (key_map->size == 0) {
EFUSE_DBG("%s: error: unknow key\n", __func__);
return EFUSE_ERR_KEY_NAME_WRONG;
}
ret = efuse_acl_ck(key_map, 1);
if(ret) {
EFUSE_DBG("%s: __efuse_acl_ck check failed\n", __func__);
return ret;
}
EFUSE_DBG_DUMP(key_name, key_data, key_len);
/*rotpk need double check before burn*/
if (strcmp(key_name, "rotpk") == 0) {
}
niddle = key_map->offset;
k_d_lft = key_len;
k_src = (unsigned long)key_data;
while(k_d_lft >= 4) {
tmp_data = *(unsigned int*)k_src;
EFUSE_DBG("offset:0x%x val:0x%x\n",niddle,tmp_data);
if(tmp_data)
{
if(efuse_uni_burn_key(niddle, tmp_data))
{
return EFUSE_ERR_BURN_TIMING;
}
}
k_d_lft-=4;
niddle += 4;
k_src +=4;
}
if(k_d_lft) {
uint mask = (1UL << (k_d_lft << 3)) - 1;
tmp_data = *(unsigned int*)k_src;
mask &= tmp_data;
EFUSE_DBG("offset:0x%x val:0x%x\n",niddle,mask);
if(mask)
{
if(efuse_uni_burn_key(niddle,mask))
{
return EFUSE_ERR_BURN_TIMING;
}
}
}
/*Already burned bit: Set this bit to indicate it is already burned.*/
if ((key_map->burned_flg_offset >= 0) &&
(key_map->burned_flg_offset <= EFUSE_BRUN_RD_OFFSET_MASK)) {
efuse_set_cfg_flg(EFUSE_WRITE_PROTECT,key_map->burned_flg_offset);
}
/*Read forbidden bit: Set to indicate cpu can not access this key again.*/
if ((key_map->rd_fbd_offset >= 0) &&
(key_map->rd_fbd_offset <= EFUSE_BRUN_RD_OFFSET_MASK)) {
efuse_set_cfg_flg(EFUSE_READ_PROTECT,key_map->rd_fbd_offset);
}
return 0;
}
/*This API assume the caller already
*prepared enough buffer to receive data.
*Because the lenth of key is exported as MACRO*/
#define EFUSE_ROUND_UP(x,y) ((((x) + ((y) - 1)) / (y)) * (y))
int hal_efuse_read(char *key_name, unsigned char *key_data, size_t key_bit_len)
{
efuse_key_map_new_t *key_map;
uint tmp=0,i=0,k_u32_l=0,bit_lft = 0;
int offset =0,tmp_sz = 0;
int ret;
/*if key_data not aligned ,u32_p will not be accessed*/
unsigned int *u32_p = (unsigned int *)key_data;
unsigned char *u8_p = (unsigned char *)key_data;
if(!(key_name && key_data)) {
EFUSE_DBG("[efuse] error arg: key_name is %p, key_data is %p\n",key_name, key_data);
return EFUSE_ERR_ARG;
}
key_map = efuse_search_key_by_name(key_name);
if (key_map->size == 0 || key_map->size > key_bit_len) {
EFUSE_DBG("[efuse] error: unknow key name\n");
return EFUSE_ERR_KEY_NAME_WRONG;
}
ret = efuse_acl_ck(key_map, 0);
if(ret) {
EFUSE_DBG("[sunxi_efuse_write] error: acl check fail\n");
return ret;
}
EFUSE_DBG("key name:%s key size:%d key offset:%d\n",\
key_map->name,key_map->size,key_map->offset);
if (key_map->size > key_bit_len) {
EFUSE_DBG("[efuse] error: key size\n");
return EFUSE_ERR_ARG;
}
k_u32_l = key_map->size / 32;
bit_lft = key_map->size % 32;
offset = key_map->offset;
for(i = 0;i<k_u32_l;i++)
{
tmp = efuse_sram_read_key(offset);
if(((unsigned long)key_data & 0x3) == 0)
{
u32_p[i] = tmp;
}
else
{
memcpy((void*)(u8_p + i * 4),(void*)(&tmp),4);
}
offset += 4;
tmp_sz += 4;
}
if(bit_lft)
{
EFUSE_DBG("bit lft is %d\n",bit_lft);
tmp = efuse_sram_read_key(offset);
memcpy((void*)(u8_p + k_u32_l * 4),(void*)(&tmp),
EFUSE_ROUND_UP(bit_lft,8) / 8);
tmp_sz += (EFUSE_ROUND_UP(bit_lft,8) / 8);
}
EFUSE_DBG_DUMP(key_name, key_data, key_bit_len/8);
return tmp_sz;
}
int hal_efuse_set_security_mode(void)
{
#ifdef EFUSE_LCJS
return efuse_uni_burn_key(EFUSE_LCJS, 0x1 << SECURE_BIT_OFFSET);
#else
return 0;
#endif
}
int hal_efuse_get_security_mode(void)
{
#ifdef EFUSE_SECURE_MODE
return hal_readl(EFUSE_SECURE_MODE) & 0x1;
#else
return 0;
#endif
}
int hal_efuse_get_chipid(unsigned char *buffer)
{
return hal_efuse_read("chipid", buffer, 128);
}
int hal_efuse_get_thermal_cdata(unsigned char *buffer)
{
return hal_efuse_read("thermal_sensor", buffer, 64);
}
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