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SmartAudio/lichee/brandy/u-boot-2011.09/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 "common.h"
#include "asm/io.h"
#include <asm/arch/efuse.h>
#include <asm/arch/efuse_map.h>
#include <malloc.h>
#include <smc.h>
#include <asm/arch/efuse.h>
DECLARE_GLOBAL_DATA_PTR;
//*****************************************************************************
// u32 sid_read_key(u32 key_index)
// Description:
// Read key from Efuse by software
// Arguments: None
//
//
// Return Value: Key value
//*****************************************************************************
u32 sid_set_burned_flag(int bit_offset)
{
u32 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 :
*
*
************************************************************************************************************
*/
static int sunxi_efuse_write_ns(void *key_buf)
{
sunxi_efuse_key_info_t *key_list = NULL;
unsigned char *key_data;
int i,j;
unsigned int key_start_addr; // ÿһ<C3BF><D2BB><EFBFBD><EFBFBD><EFBFBD>ݵĿ<DDB5>ʼ<EFBFBD><CABC>ַ
unsigned int key_once_data = 0;
unsigned char *p_key_once_data; // һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA>λ
unsigned int key_data_remain_size; //ʣ<><CAA3><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>
char *verify_buf;
unsigned int *p_verify_buf;
int burned_status;
efuse_key_map_t *key_map = key_imformatiom;
if (key_buf == NULL)
{
printf("[efuse] error: buf is null\n");
return -1;
}
key_list = (sunxi_efuse_key_info_t *)key_buf;
key_data = key_list->key_data;
//map_ns_memory((pa_t)key_buf, (va_t *)(&key_list), sizeof(sunxi_efuse_key_info_t));
//map_ns_memory((pa_t)key_list->key_data, (va_t *)(&key_data), key_list->len);
#ifdef EFUSE_DEBUG
printf("^^^^^^^printf key_buf^^^^^^^^^^^^\n");
printf("key name=%s\n", key_list->name);
printf("key len=%d\n", key_list->len);
printf("key data:\n");
sunxi_dump(key_data, key_list->len);
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)))
{
printf(" burn key start\n");
printf("burn key start\n");
printf("key name = %s\n", key_map->name);
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)
{
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
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)
{
printf("key %s has been burned already\n", key_map->name);
return -1;
}
break;
}
}
if (key_map == NULL)
{
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;
//flush_cache((uint)pbuf, byte_cnt);
for(i=0;key_data_remain_size >= 4; key_data_remain_size-=4, i+=4, key_start_addr += 4)
{
key_once_data = *(unsigned int *)(key_list->key_data + i);
sid_program_key(key_start_addr, key_once_data);
printf("[efuse] addr = 0x%x, data = 0x%x\n", key_start_addr, key_once_data);
}
key_once_data = 0;
if(key_data_remain_size)
{
j=0;
p_key_once_data = (unsigned char *)&key_once_data;
while(key_data_remain_size--)
{
p_key_once_data[j++] = key_list->key_data[i++];
}
sid_program_key(key_start_addr, key_once_data);
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;
verify_buf = malloc((key_data_remain_size + 3) & (~3));
if(verify_buf == NULL)
{
printf("cant malloc memory to store burned key\n");
return -1;
}
memset(verify_buf,0,(key_data_remain_size + 3) & (~3));
p_verify_buf = (unsigned int *)verify_buf;
if(key_data_remain_size & 3)
key_data_remain_size = (key_data_remain_size + 3) & (~3);
for(;key_data_remain_size >= 4; key_data_remain_size-=4)
{
*p_verify_buf++ = sid_read_key(key_start_addr);
key_start_addr += 4;
}
//<2F>Ƚ<EFBFBD>
if(memcmp(verify_buf, key_list->key_data, key_list->len))
{
printf("compare burned key with memory data failed\n");
printf("memory data:\n");
sunxi_dump(key_list->key_data, key_list->len);
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);
printf(" burn key end\n");
return 0;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static int sunxi_efuse_read_ns(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;
char *check_buf;
unsigned int *p_check_buf;
unsigned int key_data_remain_size; //ʣ<><CAA3><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>
// <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)))
{
printf("read key start\n");
printf("key name = %s\n", key_map->name);
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)
{
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)
{
printf("key %s don't show \n", key_map->name);
return -1;
}
break;
}
}
if (key_map == NULL)
{
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;
//map_ns_memory((pa_t)read_buf, (va_t *)&dst_buf, key_data_remain_size);
check_buf = (char *)malloc((key_data_remain_size + 3) & (~3));
if(check_buf == NULL)
{
printf("cant malloc memory to store burned key\n");
return -1;
}
p_check_buf = (unsigned int *)check_buf;
if(key_data_remain_size & 3)
key_data_remain_size = (key_data_remain_size + 3) & (~3);
for(;key_data_remain_size >= 4; key_data_remain_size-=4)
{
*p_check_buf++ = 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);
//unmap_ns_memory((va_t)dst_buf, key_map->store_max_bit/8);
return 0;
}
/*
* Generic efuse read/write API for u-boot
*/
int sunxi_efuse_read(void *key_name, void *read_buf)
{
if( gd->securemode == SUNXI_NORMAL_MODE )
return sunxi_efuse_read_ns(key_name,read_buf);
else if( (gd->securemode == SUNXI_SECURE_MODE) || (gd->securemode == SUNXI_SECURE_MODE_WITH_SECUREOS) )
return smc_efuse_readl(key_name, read_buf);
else {
printf("Wrong status to read efuse\n");
return -1 ;
}
}
int sunxi_efuse_write(void *key_buf)
{
if( gd->securemode == SUNXI_NORMAL_MODE )
return smc_efuse_writel(key_buf);
else if( gd->securemode == SUNXI_SECURE_MODE )
return sunxi_efuse_write_ns(key_buf);
else {
printf("Wrong status to read efuse\n");
return -1 ;
}
}