/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
int sprite_card_fetch_mbr(void *img_mbr)
{
imgitemhd = Img_OpenItem(imghd, "12345678", "1234567890___MBR");
if(!imgitemhd)
{
return -1;
}
debug("try to read item dl map\n");
if(!Img_ReadItem(imghd, imgitemhd, img_mbr, sizeof(sunxi_mbr_t) * SUNXI_MBR_COPY_NUM))
{
printf("sunxi sprite error : read mbr failed\n");
return -1;
}
Img_CloseItem(imghd, imgitemhd);
imgitemhd = NULL;
return sunxi_sprite_verify_mbr(img_mbr);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
int sunxi_sprite_force_erase_key(void)
{
char buf[SUNXI_MBR_SIZE * SUNXI_MBR_COPY_NUM];
if(sunxi_sprite_init(1))
{
printf("sunxi sprite pre init fail\n");
return -1;
}
//读出量产介质上的MBR
if(!sunxi_sprite_read(0, (SUNXI_MBR_SIZE * SUNXI_MBR_COPY_NUM)/512, buf))
{
printf("read local mbr on flash failed\n");
sunxi_sprite_exit(1);
return -1;
}
//校验MBR
if(sunxi_sprite_verify_mbr(buf))
{
printf("the mbr on flash is bad\n");
sunxi_sprite_exit(1);
return -1;
}
if(sunxi_sprite_erase_private_key(buf))
{
printf("erase key fail \n");
return -1;
}
#ifdef CONFIG_SUNXI_SECURE_STORAGE
if(sunxi_secure_storage_init())
return -1;
if(sunxi_secure_storage_erase("key_burned_flag") == -1)
return -1;
#endif
printf("erase key success \n");
return 0;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
int sunxi_sprite_erase_flash(void *img_mbr_buffer)
{
uint32_t need_erase_flag = 0;
char buf[SUNXI_MBR_SIZE * SUNXI_MBR_COPY_NUM];
//int ret;
int nodeoffset;
if(sunxi_sprite_erase(0, img_mbr_buffer) > 0)
{
printf("flash already erased\n");
return 0;
}
//获取擦除信息，查看是否需要擦除flash
//ret = script_parser_fetch("platform", "eraseflag", &need_erase_flag, 1);
nodeoffset = fdt_path_offset(working_fdt,FDT_PATH_PLATFORM);
if(nodeoffset > 0)
{
fdt_getprop_u32(working_fdt,nodeoffset,"eraseflag",&need_erase_flag);
}
if(need_erase_flag)
{
printf("do need erase flash\n");
}
else
{
printf("not need erase flash\n");
}
//当要求强制擦除，不处理私有数据
if(need_erase_flag == 0x11)
{
printf("force erase flash\n");
sunxi_sprite_erase(1, img_mbr_buffer);
return 0;
}
//检测不到private分区，即不用保护用户数据
if(!sunxi_sprite_probe_prvt(img_mbr_buffer))
{
printf("no part need to protect user data\n");
sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
return 0;
}
//当初始化失败的时候，直接擦除，不处理私有数据
if(sunxi_sprite_init(1))
{
debug("sunxi sprite pre init fail, we have to erase it\n");
sunxi_sprite_exit(1);
sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
return 0;
}
debug("nand pre init ok\n");
//读出量产介质上的MBR
if(!sunxi_sprite_read(0, (SUNXI_MBR_SIZE * SUNXI_MBR_COPY_NUM)/512, buf))
{
printf("read local mbr on flash failed\n");
sunxi_sprite_exit(1);
sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
return 0;
}
//校验MBR
if(sunxi_sprite_verify_mbr(buf))
{
printf("the mbr on flash is bad\n");
sunxi_sprite_exit(1);
sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
return 0;
}
printf("begin to store data\n");
if(sunxi_sprite_store_part_data(buf) < 0)
{
sunxi_sprite_exit(1);
return -1;
}
sunxi_sprite_exit(1);
printf("need_erase_flag = %d\n", need_erase_flag);
//开始擦除
printf("begin to erase\n");
sunxi_sprite_erase(need_erase_flag, img_mbr_buffer);
//开始回写private
printf("finish erase\n");
sunxi_sprite_init(0);
printf("rewrite\n");
if(sunxi_sprite_restore_part_data(img_mbr_buffer))
{
sunxi_sprite_exit(0);
return -1;
}
printf("flash exit\n");
sunxi_sprite_exit(0);
return 0;
}