SIMLock锁卡功能解析

一、锁卡背景介绍

　　锁卡即SIMLock,当手机开机启动或者插入SIM卡时，手机modem侧预置在NV项中的配置信息会与SIM卡中的信息做比对，检测是否匹配。若匹配，则SIM卡可以正常使用。若不匹配，则SIM卡相关功能均无法正常使用，例如拨打电话、发送短信及上网等；或者是只能注册2G网，不能注册4G。

　　锁卡的目的：一些运营商会要求控制某一类卡的使用，从而保护自己的利益（运营商定制机）

　　SIMLock锁和图案锁，数字密码锁，PIN码锁，PUK锁一样，是Keyguard模块中的一种锁。

二、锁卡的需求

　　锁卡的需求方式有7种之多，常见的有NP锁，NS锁，CP锁，SP锁等

　　从安卓机器来看，目前最常用的是SP锁（MCC/MNC），本文将解析SP锁的加锁流程

三、锁卡流程解析

　　1.首先modem侧检测SIM卡的配置信息并与之作比对，若匹配则继续加载SIM卡，若不匹配，则上报加锁信息

　　2.RIL层检测到modem上报的加锁信息，然后发送给framework层，最终在AP层监测到事件：

　　3.AP层显示出锁卡界面，要求用户输入解锁码进行解锁

四、相关流程图

1.加锁流程图

2.解锁流程图

五、代码解析

　　MTK平台已经支持SIMLock功能，但只能在代码中写固定的MCC/MNC，不能灵活配置。即一套代码只能对应一套对应的锁卡配置信息，对于手机厂商来说，显然不满足需求，发货国家遍布全球，锁卡配置信息均不同，代码版本太多无法管理，故肯定要废弃MTK的这套SIMLock功能。

（1）modem侧客制化

　　涉及的代码文件：

　　custom/modem/common/ps/custom_nvram_extra.c

　　custom/modem/common/ps/customer_at_command.c

　　custom/service/nvram/custom_nvram_sec.c

　　custom/service/nvram/custom_nvram_sec.h

　　interface/service/nvram/nvram_data_items.h

　　service/nvram/src/nvram_factory_config.c

　　service/nvram/src/nvram_main.c

　　a.扩展锁卡配置信息的组数

　　custom_nvram_sec.h

　　#define SML_MAX_SUPPORT_CAT_N 50
　　初始化数组的时候，需要添加对应的默认配置信息

const nvram_sml_context_struct NVRAM_EF_SML_DEFAULT =

{	SML_MAGIC_HEAD_VALUE,

	{{SML_STATE_UNLOCK,SML_RETRY_COUNT_N_CAT,0,0},	   /* Category N */

	{SML_STATE_UNLOCK,SML_RETRY_COUNT_NS_CAT ,0,0},   /* Category NS */

	{SML_STATE_UNLOCK,SML_RETRY_COUNT_SP_CAT ,0,0},   /* Category SP */

	{SML_STATE_UNLOCK,SML_RETRY_COUNT_C_CAT ,0,0},	  /* Category C */

	{SML_STATE_UNLOCK,SML_RETRY_COUNT_SIM_CAT ,0,0},  /* Category SIM */

	{SML_STATE_UNLOCK,SML_RETRY_COUNT_NS_CAT ,0,0},   /* Link NS-SP */

	{SML_STATE_UNLOCK,SML_RETRY_COUNT_C_CAT ,0,0}},    /* Link SIM-C */

	{{SML_KEY_SET,{0x21,0x43,0x65,0x87,0xFF,0xFF,0xFF,0xFF}},

	{SML_KEY_SET,{0x65,0x87,0x21,0x43,0xFF,0xFF,0xFF,0xFF}},

	{SML_KEY_SET,{0x11,0x22,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}},

	{SML_KEY_EMPTY,{0x33,0x44,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}},

	{SML_KEY_EMPTY,{0x55,0x66,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}},

	{SML_KEY_SET,{0x77,0x88,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}},

	{SML_KEY_SET,{0x99,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}}},

	/* Category N code */

{0x73,0x00,0x1F,0x73,0x00,0x2F,0x73,0x00,0x3F,0x73,0x00,0x4F,0x73,0x00,0x5F,

	 0x73,0x00,0x6F,0x73,0x00,0x7F,0x73,0x00,0x8F,0x73,0x00,0x9F,0x73,0x01,0x0F,

	 0x73,0x01,0x1F,0x73,0x09,0x9F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00},

	/* Category NS code */

	{0xc2,0xc2,0xc2,0xc2,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00},

	/* Category SP code */

	{0xc3,0xc3,0xc3,0xc3,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00},

	/* Category C code */

	{0xc4,0xc4,0xc4,0xc4,0xc4,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00},

	/* Category SIM code */

	{0xc5,0xc5,0xc5,0xc5,0xc5,0xc5,0xc5,0xc5,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},

	/* Link Category NS-SP */

	{0xc6,0xc6,0xc6,0xc6,0xc6,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00},

	/* Link Category SIM-C */

	{0xc7,0xc7,0xc7,0xc7,0xc7,0xc7,0xc7,0xc7,0xc7,0xc7,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

	 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},

	{0xFF,0xFF},

	SML_MAGIC_TAIL_VALUE

};

　　b.修改剩余解锁次数

　　custom_nvram_sec.h

#define SML_MAX_RETRY_COUNT 10

　　c.扩展客制化的锁卡NV项

　　例如MTK源生的锁卡NV项已经可以通过工具查看及修改，这样锁卡就容易被破解。客制化自己的锁卡NV项，即使MTK源生的被破解了，SIMLock功能依旧正常工作。

　　不过从Android 6.0来看，MTK已经在modem侧做了处理，使用工具无法查看及修改该NV项了。

　　（1）先定义NV项

　　（2）对该NV项进行对应的初始化，参考源生的即可

　　d.扩展锁卡的特殊需求（关联锁卡等）

　　由于源生的AT指令不能查询锁卡状态信息，可以通过扩展AT指令来实现

　　如下代码为扩展的AT+QSIM1的指令，查询的信息包括锁卡状态，锁卡配置信息，剩余次数等

if (strcmp(cmd_name, "QSIM1") == 0)

    {

        extern void simlock_query_sml_info(kal_uint8 sim_id, sml_context_struct* sml_static_buffer);

	char info_buffer[MAX_UART_LEN+1];

	int NumOfPlmn,i;

        int isLocked = -1;

	sml_context_struct sml_static_buffer;

	memset(&sml_static_buffer,0x00,sizeof(sml_context_struct));

        simlock_query_sml_info(1, &sml_static_buffer);

	kal_prompt_trace(MOD_SIM, "[sim1]: receive full_cmd_string =%s", full_cmd_string);

	sml_cat_enum cat = 0xff;

	for(cat = SML_CAT_N; cat < SML_CAT_SIZE; cat++)

        {

            if(sml_static_buffer.cat[cat].state == 0x01)

            {

                isLocked = 1;

                break;

            }

        }

        if(isLocked == 1)

        {

            NumOfPlmn = sml_static_buffer.cat[cat].num;

			NumOfPlmn = 1;

            sprintf(info_buffer, "+QSIM1:%02x;",sml_static_buffer.cat[cat].state);

            sprintf(info_buffer+strlen(info_buffer), "%02x;",NumOfPlmn);

            //#define SML_SIZE_OF_CAT_N      3 /* MCC/MNC */

            //#define SML_SIZE_OF_CAT_NS     4 /* MCC/MNC + HLR */

            //#define SML_SIZE_OF_CAT_SP     4 /* MCC/MNC + GID1 */

            //#define SML_SIZE_OF_CAT_C      5 /* MCC/MNC + GID1 + GID2 */

            //#define SML_SIZE_OF_CAT_SIM    8 /* IMSI */

            //#define SML_SIZE_OF_LINK_NS_SP          5  /* MCC/MNC + HLR+ GID1 */

            //#define SML_SIZE_OF_LINK_SIM_C          10 /* IMSI + GID1 + GID2 */

            if(cat == SML_CAT_N)

            {

                for(i = 0; i < NumOfPlmn*SML_SIZE_OF_CAT_N; i=i+SML_SIZE_OF_CAT_N)

                {

	            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x;",sml_static_buffer.code_cat_n[i],

                            sml_static_buffer.code_cat_n[i + 1],sml_static_buffer.code_cat_n[i + 2]);

                }

                //sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x",sml_static_buffer.key[cat].key[4],

                //        sml_static_buffer.key[cat].key[5],sml_static_buffer.key[cat].key[6],sml_static_buffer.key[cat].key[7]);

            //kal_prompt_trace(MOD_SIM, " receive cmd =%s ; flag is %x ", cmd_name, read_buffer);

            }

            else if(cat == SML_CAT_NS)

            {

                for(i = 0; i < NumOfPlmn*SML_SIZE_OF_CAT_NS; i=i+SML_SIZE_OF_CAT_NS)

                {

	            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x;",sml_static_buffer.code_cat_ns[i],

                            sml_static_buffer.code_cat_ns[i + 1],sml_static_buffer.code_cat_ns[i + 2],sml_static_buffer.code_cat_ns[i + 3]);

                }

            }

            else if(cat == SML_CAT_SP)

            {

                for(i = 0; i < NumOfPlmn*SML_SIZE_OF_CAT_SP; i=i+SML_SIZE_OF_CAT_SP)

                {

	            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x;",sml_static_buffer.code_cat_sp[i],

                            sml_static_buffer.code_cat_sp[i + 1],sml_static_buffer.code_cat_sp[i + 2],sml_static_buffer.code_cat_sp[i + 3]);

                }

            }

            else if(cat == SML_CAT_C)

            {

                for(i = 0; i < NumOfPlmn*SML_SIZE_OF_CAT_C; i=i+SML_SIZE_OF_CAT_C)

                {

	            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x",sml_static_buffer.code_cat_c[i],

                            sml_static_buffer.code_cat_c[i + 1],sml_static_buffer.code_cat_c[i + 2],sml_static_buffer.code_cat_c[i + 3]);

	            sprintf(info_buffer+strlen(info_buffer), "%02x;",sml_static_buffer.code_cat_c[i + 4]);

                }

            }

            else if(cat == SML_CAT_SIM)

            {

                for(i = 0; i < NumOfPlmn*SML_SIZE_OF_CAT_SIM; i=i+SML_SIZE_OF_CAT_SIM)

                {

	            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x",sml_static_buffer.code_cat_sim[i],

                            sml_static_buffer.code_cat_sim[i + 1],sml_static_buffer.code_cat_sim[i + 2],sml_static_buffer.code_cat_sim[i + 3]);

	            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x;",sml_static_buffer.code_cat_sim[i + 4],

			    sml_static_buffer.code_cat_sim[i + 5],sml_static_buffer.code_cat_sim[i + 6],

                            sml_static_buffer.code_cat_sim[i + 7]);

                }

            }

            else if(cat == SML_CAT_NS_SP)

            {

                for(i = 0; i < NumOfPlmn*SML_SIZE_OF_LINK_NS_SP; i=i+SML_SIZE_OF_LINK_NS_SP)

                {

	            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x",sml_static_buffer.code_cat_ns_sp[i],

                            sml_static_buffer.code_cat_ns_sp[i + 1],sml_static_buffer.code_cat_ns_sp[i + 2],sml_static_buffer.code_cat_ns_sp[i + 3]);

	            sprintf(info_buffer+strlen(info_buffer), "%02x;",sml_static_buffer.code_cat_ns_sp[i + 4]);

                }

            }

            else if(cat == SML_CAT_SIM_C)

            {

                for(i = 0; i < NumOfPlmn*SML_SIZE_OF_LINK_SIM_C; i=i+SML_SIZE_OF_LINK_SIM_C)

                {

	            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x",sml_static_buffer.code_cat_sim_c[i],

                            sml_static_buffer.code_cat_sim_c[i + 1],sml_static_buffer.code_cat_sim_c[i + 2],

			    sml_static_buffer.code_cat_sim_c[i + 3]);

	            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x",sml_static_buffer.code_cat_sim_c[i + 4],

			    sml_static_buffer.code_cat_sim_c[i + 5],sml_static_buffer.code_cat_sim_c[i + 6],

                            sml_static_buffer.code_cat_sim_c[i + 7]);

	            sprintf(info_buffer+strlen(info_buffer), "%02x%02x;",sml_static_buffer.code_cat_sim_c[i + 8],

                            sml_static_buffer.code_cat_sim_c[i + 9]);

                }

            }

            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x",sml_static_buffer.key[cat].key[0],

                        sml_static_buffer.key[cat].key[1],sml_static_buffer.key[cat].key[2],sml_static_buffer.key[cat].key[3]);

            sprintf(info_buffer+strlen(info_buffer), "%02x%02x%02x%02x;",sml_static_buffer.key[cat].key[4],

                    sml_static_buffer.key[cat].key[5],sml_static_buffer.key[cat].key[6],sml_static_buffer.key[cat].key[7]);

            sprintf(info_buffer+strlen(info_buffer), "%02x;",sml_static_buffer.cat[cat].retry_count);

            sprintf(info_buffer+strlen(info_buffer), "%02x;",cat);

        }

        else

        {

            sprintf(info_buffer, "+QSIM1:%02x;",0x00);

        }

	//kal_prompt_trace(MOD_NVRAM, "[sim1]: info_buffer is === >> %s", info_buffer);

	rmmi_write_to_uart((kal_uint8*)info_buffer, strlen(info_buffer), KAL_FALSE);

	sprintf(buffer, "OK");

	rmmi_write_to_uart((kal_uint8*)buffer, strlen(buffer), KAL_TRUE);

	return KAL_TRUE;

    }

（2）AP侧客制化

　　SIMLock客制化工作量主要集中在modem侧，AP侧主要为界面显示及AT指令的交互

　　a.AT指令的交互

　　　　查询SIM卡状态

　　　　查询锁卡状态信息：是否锁卡，锁卡的配置信息（MCC/MNC），解锁剩余次数等

　　　　发送PASSWORD到RIL侧，解析解锁是否成功的返回信息

　　b.用户界面的显示

　　　　提示用户输入解锁码

　　　　提示剩余解锁次数

　　　　提示剩余时间可以继续输入解锁码

　　　　提示SIM卡永久被锁

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