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SmartAudio/lichee/brandy/arm-trusted-firmware-1.0/drivers/efuse/sunxi_efuse.c

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init
2018-07-13 01:31:50 +00:00
/*
**********************************************************************************************************************
*
* the Embedded Secure Bootloader System
*
*
* Copyright(C), 2006-2014, Allwinnertech Co., Ltd.
* All Rights Reserved
*
* File :
*
* By :
*
* Version : V2.00
*
* Date :
*
* Descript:
**********************************************************************************************************************
*/
#include <debug.h>
#include <efuse.h>
#include <efuse_map.h>
#include <string.h>
extern void flush_dcache_range(unsigned long addr, unsigned long len);
static efuse_key_map_t key_imformatiom[] =
{
{"rotpk", EFUSE_ROTPK, SID_ROTPK_SIZE, SCC_ROTPK_DONTSHOW_FLAG, SCC_ROTPK_BURNED_FLAG, {0}},
{"rssk", EFUSE_RSSK, SID_RSSK_SIZE, SCC_RSSK_DONTSHOW_FLAG, SCC_RSSK_BURNED_FLAG, {0}},
{"ssk", EFUSE_SSK, SID_SSK_SIZE, SCC_SSK_DONTSHOW_FLAG, SCC_SSK_BURNED_FLAG, {0}},
{"rotpk", EFUSE_ROTPK, SID_ROTPK_SIZE, SCC_ROTPK_DONTSHOW_FLAG, SCC_ROTPK_BURNED_FLAG, {0}},
{"hdcphash", EFUSE_HDCP_HASH, SID_HDCP_HASH_SIZE, -1, SCC_HDCP_HASH_BURNED_FLAG, {0}},
{{0} , 0, 0, 0, 0,{0}}
};
static void sunxi_dump(void *addr, unsigned int size)
{
int i,j;
char *buf = (char *)addr;
for(j=0;j<size;j+=16)
{
for(i=0;i<16;i++)
{
tf_printf("%x ", buf[j+i] & 0xff);
}
tf_printf("\n");
}
tf_printf("\n");
return ;
}
//*****************************************************************************
// uint32_t sid_read_key(uint32_t key_index)
// Description:
// Read key from Efuse by software
// Arguments: None
//
//
// Return Value: Key value
//*****************************************************************************
unsigned int sid_set_burned_flag(int bit_offset)
{
unsigned int reg_val;
reg_val = sid_read_key(EFUSE_CHIP_CONFIG);
reg_val |= (0x1<<bit_offset); //ʹ<><CAB9>securebit
sid_program_key(EFUSE_CHIP_CONFIG, reg_val);
reg_val = (sid_read_key(EFUSE_CHIP_CONFIG) >> bit_offset) & 1;
return reg_val;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
int sunxi_efuse_write(void *key_buf)
{
sunxi_efuse_key_info_t *key_list = NULL;
unsigned long key_data_addr;
int i;
unsigned int key_start_addr; // ÿһ<C3BF><D2BB><EFBFBD><EFBFBD><EFBFBD>ݵĿ<DDB5>ʼ<EFBFBD><CABC>ַ
unsigned int *key_once_data = 0;
unsigned int key_data_remain_size; //ʣ<><CAA3><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>
unsigned int verify_buf[128];
int burned_status;
efuse_key_map_t *key_map = key_imformatiom;
if (key_buf == NULL)
{
tf_printf("[efuse] error: buf is null\n");
return -1;
}
key_list = (sunxi_efuse_key_info_t *)key_buf;
key_data_addr = ((unsigned long)key_list->key_data) & 0xffffffff ;
#ifdef EFUSE_DEBUG
tf_printf("^^^^^^^tf_printf key_buf^^^^^^^^^^^^\n");
tf_printf("key name=%s\n", key_list->name);
tf_printf("key len=%d\n", key_list->len);
tf_printf("key data:%p\n", (void*)key_data_addr);
sunxi_dump((void *)key_data_addr, key_list->len);
tf_printf("###################\n");
#endif
// <20><><EFBFBD>ֵ䣬<D6B5><E4A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>key<65><79><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д
for (; key_map != NULL; key_map++)
{
if (!memcmp(key_list->name, key_map->name, strlen(key_map->name)))
{
tf_printf(" burn key start\n");
tf_printf("burn key start\n");
tf_printf("key name = %s\n", key_map->name);
tf_printf("key index = 0x%x\n", key_map->key_index);
// <09>ж<EFBFBD><D0B6>Ƿ<EFBFBD><C7B7>㹻<EFBFBD>ռ<EFBFBD><D5BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>key
if ((key_map->store_max_bit / 8) < key_list->len)
{
tf_printf("[efuse] error: not enough space to store the key, efuse size(%d), data size(%d)\n", key_map->store_max_bit/8, key_list->len);
return -1;
}
// <20>жϴ<D0B6><CFB4><EFBFBD>key<65><79><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>Ѿ<EFBFBD><D1BE><EFBFBD>¼
tf_printf("===== key_map->burned_bit_offset ====%d \n",key_map->burned_bit_offset);
burned_status = (sid_read_key(EFUSE_CHIP_CONFIG) >> key_map->burned_bit_offset) & 1;
if(burned_status)
{
tf_printf("key %s has been burned already\n", key_map->name);
return -1;
}
break;
}
}
if (key_map == NULL)
{
tf_printf("[efuse] error: can't burn the key (unknow)\n");
return -1;
}
//<2F><>дkey
key_start_addr = key_map->key_index;
key_data_remain_size = key_list->len;
memset(verify_buf, 0, 512);
memcpy(verify_buf,(void *)key_data_addr,key_data_remain_size); /*align key_once_data to 4 bytes*/
key_once_data = verify_buf;
tf_printf("key_data_remain_size=%d\n", key_data_remain_size);
//flush_cache((uint)pbuf, byte_cnt);
for(;key_data_remain_size >= 4; key_data_remain_size-=4, key_start_addr += 4, key_once_data ++)
{
tf_printf("key_data_remain_size=%d\n", key_data_remain_size);
tf_printf("key data=0x%x, addr=0x%p\n", *key_once_data, key_once_data);
sid_program_key(key_start_addr, *key_once_data);
tf_printf("[efuse] addr = 0x%x, data = 0x%x\n", key_start_addr, *key_once_data);
}
if(key_data_remain_size)
{
if(key_data_remain_size == 1)
{
*key_once_data &= 0x000000ff;
}
else if(key_data_remain_size == 2)
{
*key_once_data &= 0x0000ffff;
}
else if(key_data_remain_size == 3)
{
*key_once_data &= 0x00ffffff;
}
sid_program_key(key_start_addr, *key_once_data);
tf_printf("[efuse] addr = 0x%x, data = 0x%x\n", key_start_addr, *key_once_data);
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><C2BC>key<65><79>Ϣ
key_start_addr = key_map->key_index;
key_data_remain_size = key_list->len;
memset(verify_buf, 0, 512);
if(key_data_remain_size & 3)
key_data_remain_size = (key_data_remain_size + 3) & (~3);
for(i=0;i<key_data_remain_size/4; i++)
{
verify_buf[i] = sid_read_key(key_start_addr);
key_start_addr += 4;
}
//<2F>Ƚ<EFBFBD>
if(memcmp(verify_buf, (const void *)key_data_addr, key_list->len))
{
tf_printf("compare burned key with memory data failed\n");
tf_printf("memory data:\n");
sunxi_dump((void *)key_data_addr, key_list->len);
tf_printf("burned key:\n");
sunxi_dump(verify_buf, key_list->len);
return -1;
}
//<2F><><EFBFBD><EFBFBD>
sid_set_burned_flag(key_map->burned_bit_offset);
tf_printf(" burn key end\n");
return 0;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
int sunxi_efuse_read(void *key_name, void *read_buf)
{
efuse_key_map_t *key_map = key_imformatiom;
unsigned int key_start_addr; // ÿһ<C3BF><D2BB><EFBFBD><EFBFBD><EFBFBD>ݵĿ<DDB5>ʼ<EFBFBD><CABC>ַ
int show_status;
int check_buf[128];
unsigned int key_data_remain_size; //ʣ<><CAA3><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>
int i;
// <20><><EFBFBD>ֵ䣬<D6B5><E4A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>key<65><79><EFBFBD>ܱ<EFBFBD><DCB1>鿴
for (; key_map != NULL; key_map++)
{
if (!memcmp(key_name, key_map->name, strlen(key_map->name)))
{
tf_printf("read key start\n");
tf_printf("key name = %s\n", key_map->name);
tf_printf("key index = 0x%x\n", key_map->key_index);
//<2F>ж<EFBFBD>key<65><79>û<EFBFBD><C3BB><EFBFBD><EFBFBD>¼<EFBFBD><C2BC>
show_status = (sid_read_key(EFUSE_CHIP_CONFIG) >> key_map->burned_bit_offset) & 1;
if(!show_status)
{
tf_printf("key %s have not been burned yet\n", key_map->name);
return -1;
}
// <20>жϴ<D0B6><CFB4><EFBFBD>key<65><79><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>鿴
//<2F><><EFBFBD><EFBFBD>û<EFBFBD>д˱<D0B4>־λ<D6BE><CEBB><EFBFBD><EFBFBD>ʾһ<CABE><D2BB><EFBFBD><EFBFBD><EFBFBD>Բ鿴
if(key_map->show_bit_offset < 0)
{
break;
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڱ<EFBFBD>־λ<D6BE><CEBB><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>鿴<EFBFBD><E9BFB4><EFBFBD>򲻶<EFBFBD><F2B2BBB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҷ<EFBFBD><D2B7>ر<EFBFBD><D8B1><EFBFBD>
show_status = (sid_read_key(EFUSE_CHIP_CONFIG) >> key_map->show_bit_offset) & 1;
if(show_status)
{
tf_printf("key %s don't show \n", key_map->name);
return -1;
}
break;
}
}
if (key_map == NULL)
{
tf_printf("[efuse] error: can't read the key (unknow)\n");
return -1;
}
//<2F><>дkey
key_start_addr = key_map->key_index;
key_data_remain_size = key_map->store_max_bit / 8;
memset(check_buf, 0, 512);
if(key_data_remain_size & 3)
key_data_remain_size = (key_data_remain_size + 3) & (~3);
for(i=0;i<key_data_remain_size/4; i++)
{
check_buf[i] = sid_read_key(key_start_addr);
key_start_addr += 4;
}
sunxi_dump(check_buf, key_map->store_max_bit / 8);
memcpy((void *)read_buf, check_buf, key_map->store_max_bit / 8);
flush_dcache_range((unsigned long)read_buf, key_map->store_max_bit / 8);
return 0;
}
int sunxi_efuse_probe_security_mode(void)
{
return sid_probe_security_mode();
}