展讯nand分区和使用新分区

添加新的NAND分区添加俩个NAND分区，方法:首先在user_partitionid.h中定义partitionID，新ID的值要以宏PARTITION_EXTUSER_DEF_BASE为基础，依次递增，如下所示：#define SCI_PARTITION_TEST1 PARTITION_EXTUSER_DEF_BASE+0x0#define SCI_PARTITION_TEST2 PARTITION_EXTUSER_DEF_BASE+0x1其次在大工程里面修改两个文件：user_partitionname.h和user_nandpart_info.c。

添加partition name和partitioninfo。

#define SCI_TEST1_PARTITION_NAME "test_Partition_1"#define SCI_TEST2_PARTITION_NAME "test_Partition_2"配置stUserPartition[]如下：const USER_PART_INFO stUserPartition[4]={{0, SCI_PARTITION_TEST_1, 0, SCI_TEST1_PARTITION_NAME, NULL, NULL},{0, SCI_PARTITION_TEST_2, 0, SCI_TEST2_PARTITION_NAME, NULL, NULL}, {0, 0, 0, NULL, NULL, NULL},};其中结构体USER_PART_INFO定义为：typedef struct _USER_PART_INFO {uint32 nV ol;uint32 nPartID;uint32 Attribute; /* Reserved now. Should be zero */const char *Name; /* The name exported to upper layer by BSD, which* should be less than 128 characters.*/void (*OnMount)(const struct _USER_PART_INFO *info); /* called after mounted to BSD */void (*OnUnmount)(const struct _USER_PART_INFO *info); /* called before to be unmouted from BSD */} USER_PART_INFO;OnMount和OnUnmount函数是BSD在Mount和UnMount这个分区时调用的函数，可以为用户提供扩展应用。

然后回到NAND_PartTable_64M_SmallPage.c重新定义分区个数，各个分区大小、分区偏移量、分区属性和分区表。

如下（例）：#define PART_NUM 9 //XSRPartInNumOfPartEntry/****************************************************************************** * Partition Size in BLOCK******************************************************************************/ #define NBL_SIZE 1 /* 1 block, 128KB */#define OSB_SIZE 32 /* 32 blocks, 4MB */#define OSA_SIZE 80 /* 160 blocks, 20MB */#define DL_NV_SIZE 1 /* 1 block, 128KB */#define CALIPARAM_SIZE 1 /* 1 blocks, 128KB */#define MMI_RESOURCE_SIZE 60 /* 1 blocks, 128KB */#define RUNNING_NV_SIZE 48 /* 48 blocks, 6M */#define HIDDEN_FS_SIZE 40 /* 40 blocks, 5MB */#define DSP_CODE_SIZE 31 /* 32 blocks, 4MB */#define TEST_PARTITION_1_SIZE 32 /*32blocks, 4MB*/#define TEST_PARTITION_2_SIZE 32 /*32blocks, 4MB*/#define FS_SIZE (A V AILABLE_BLOCK_NUM - NBL_SIZE - OSB_SIZE - OSA_SIZE - DL_NV_SIZE - CALIPARAM_SIZE - MMI_RESOURCE_SIZE - RUNNING_NV_SIZE\- HIDDEN_FS_SIZE-DSP_CODE_SIZE - TEST_PARTITION_1_SIZE -\ TEST_PARTITION_2_SIZE )/******************************************************************************* Partition Offset in BLOCK******************************************************************************/#define NBL_OFFSET (0)#define OSB_OFFSET (NBL_OFFSET + NBL_SIZE)#define OSA_OFFSET (OSC_OFFSET + OSC_SIZE)#define DL_NV_OFFSET (OSA_OFFSET + OSA_SIZE)#define CALIPARAM_OFFSET (DL_NV_OFFSET + DL_NV_SIZE)#define MMIRESOURCE_OFFSET (CALIPARAM_OFFSET + CALIPARAM_SIZE)#define RUNNING_NV_OFFSET (MMIRESOURCE_OFFSET + MMI_RESOURCE_SIZE)#define FS_OFFSET (RUNNING_NV_OFFSET + RUNNING_NV_SIZE)#define TEST_PARTITION_1_SIZE (FS_OFFSET + FS_SIZE)#define TEST_PARTITION_2_SIZE(TEST_PARTITION_1_SIZE+TEST_PARTITION_1_SIZE)/******************************************************************************* Partition Attribute******************************************************************************/#define NBL_ATTRI BML_PI_ATTR_FROZEN | BML_PI_ATTR_RO#define OSB_ATTRI BML_PI_ATTR_RO#define OSA_ATTRI BML_PI_ATTR_RO#define DL_NV_ATTRI BML_PI_ATTR_RO#define CALIPARAM_ATTRI BML_PI_ATTR_RO#define MMIRESOURCE_ATTRI BML_PI_ATTR_RO#define RUNNING_NV_ATTRI BML_PI_ATTR_RW | BML_PI_ATTR_STL#define FS_ATTRI BML_PI_ATTR_RW | BML_PI_ATTR_STL#define TEST_PARTITION_1_ATTRI BML_PI_ATTR_RW | BML_PI_ATTR_STL#define TEST_PARTITION_2_ATTRI BML_PI_ATTR_RW | BML_PI_ATTR_STLconst XSRPartI PartI_64M_LargePage ={{PART_SIG},{PART_VER},{PART_NUM},{{SCI_PARTITION_NBL, NBL_ATTRI, NBL_OFFSET,NBL_SIZE },{SCI_PARTITION_OSB, OSB_ATTRI, OSB_OFFSET,OSB_SIZE },{SCI_PARTITION_OSA, OSA_ATTRI, OSA_OFFSET,OSA_SIZE },{SCI_PARTITION_DOWNLOADED_NV, DL_NV_ATTRI, DL_NV_OFFSET,DL_NV_SIZE },{SCI_PARTITION_CALIPARAM, CALIPARAM_ATTRI, CALIPARAM_OFFSET, CALIPARAM_SIZE },{SCI_PARTITION_MMI_RESOURCE, MMIRESOURCE_ATTRI, MMIRESOURCE_OFFSET, MMI_RESOURCE_SIZE },{SCI_PARTITION_NV, RUNNING_NV_ATTRI, RUNNING_NV_OFFSET,RUNNING_NV_SIZE },{SCI_PARTITION_FILESYSTEM, FS_ATTRI, FS_OFFSET, FS_SIZE },{SCI_TEST_PARTITION_1, TEST_PARTITION_1_ATTRI, TEST_PARTITION_1_OFFSET, TEST_PARTITION_1_SIZE},{SCI_TEST_PARTITION_2, TEST_PARTITION_2_ATTRI, TEST_PARTITION_2_OFFSET, TEST_PARTITION_2_SIZE},}如何访问新增的分区调用BSD接口就可以访问新增分区。

具体流程如下：1、定义一个BSD_HANDLE变量LOCAL BSD_HANDLE s_Test1_handle;LOCAL BSD_DEVICE s_Test1_dev;2、调用BSD_Open()来获得对这个设备的访问权限并告知BSD要对这个设备操作的属性。