1、在”components\hal\config“路径下，找到对应芯片组型号文件夹，如8850。

2、根据模组闪存容量以及是否使用volte功能选择对应文件，如“partinfo_8850_8m_opencpu_novolte.json”文件，表示8850芯片，8M flash容量版本，opencpu开发，不开启volte功能的固件的固件分区文件。

3、修改文件，打开后样式如下：

{     "version": "0x100",     "descriptions": [         {             "type": "FBD2",             "flash": "SFL1",             "name": "FSYS",             "offset": "0x370000",             "size": "0x250000",             "erase_block": "0x1000",             "logic_block": "0x200"         },         {             "type": "FBD2",             "flash": "SFL1",             "name": "FMOD",             "offset": "0x5c0000",             "size": "0x200000",             "erase_block": "0x8000",             "logic_block": "0x200"         },         {             "type": "FBD2",             "flash": "SFL1",             "name": "FFAC",             "offset": "0x7c0000",             "size": "0x40000",             "erase_block": "0x1000",             "logic_block": "0x100"         },         {             "type": "SFFS",             "device": "FSYS",             "mount": "/",             "reserve_block": "32"         },         {             "type": "SFFS",             "device": "FMOD",             "mount": "/modem",             "application_ro": true         },         {             "type": "SFFS",             "device": "FFAC",             "mount": "/factory",             "application_ro": true         }     ],     "macros": {         "CONFIG_SPL_FLASH_ADDRESS": "0x60000000",         "CONFIG_SPL_FLASH_SIZE": "0x20000",         "CONFIG_BOOT_FLASH_ADDRESS": "0x60020000",         "CONFIG_BOOT_FLASH_SIZE": "0x10000",         "CONFIG_TZ_SML_FLASH_ADDRESS": "0x0",         "CONFIG_TZ_SML_FLASH_SIZE": "0x0",         "CONFIG_TZ_TOS_FLASH_ADDRESS": "0x0",         "CONFIG_TZ_TOS_FLASH_SIZE": "0x0",         "CONFIG_APP_FLASH_ADDRESS": "0x60030000",         "CONFIG_APP_FLASH_SIZE": "0x220000",         "CONFIG_APPIMG_FLASH_ADDRESS": "0x60250000",         "CONFIG_APPIMG_FLASH_SIZE": "0x120000",         "CONFIG_FS_SYS_FLASH_ADDRESS": "0x60370000",         "CONFIG_FS_SYS_FLASH_SIZE": "0x250000",         "CONFIG_FS_MODEM_FLASH_ADDRESS": "0x605c0000",         "CONFIG_FS_MODEM_FLASH_SIZE": "0x200000",         "CONFIG_FS_FACTORY_FLASH_ADDRESS": "0x607c0000",         "CONFIG_FS_FACTORY_FLASH_SIZE": "0x40000",         "CONFIG_FS_SYS_MOUNT_POINT": "/",         "CONFIG_FS_MODEM_MOUNT_POINT": "/modem",         "CONFIG_FS_FACTORY_MOUNT_POINT": "/factory",         "CONFIG_FS_MODEM_NVM_DIR": "/runningnv",         "CONFIG_FS_AP_NVM_DIR": "/nvm",         "CONFIG_FS_FOTA_DATA_DIR": "/fota",         "CONFIG_SPL_FLASH_ENABLE": "on", 		"CONFIG_EFS_SYS_FLASH2_ADDRESS": "0x00000000", 		"CONFIG_EFS_SYS_FLASH2_SIZE": "0x0"     } } 

其中：

        "CONFIG_APP_FLASH_ADDRESS": "0x60030000",          "CONFIG_APP_FLASH_SIZE": "0x220000",

表示固件部分的起始地址和占用空间。这个一般不要动，除非有进一步压缩的固件，省出空间的需求。
 

        "CONFIG_APPIMG_FLASH_ADDRESS": "0x60250000",         "CONFIG_APPIMG_FLASH_SIZE": "0x120000",

表示APP_IMG的起始地址和占用空间，这个部分是开发者自己编写的程序占用的区域。
 

        "CONFIG_FS_SYS_FLASH_ADDRESS": "0x60370000",         "CONFIG_FS_SYS_FLASH_SIZE": "0x250000",

表示片内文件系统的起始地址和占用空间，这个和前面的APP_IMG可以一起做调整。比如如果需要比较大的文件系统，则可以缩小APP_IMG的空间，增加文件系统的占用空间。
比如现在APP_IMG的空间为0x120000，约1152KB，FS的空间为0x250000，约为2368KB，增加FS的空间，可以这样修改：

        "CONFIG_APPIMG_FLASH_ADDRESS": "0x60250000",         "CONFIG_APPIMG_FLASH_SIZE": "0x100000",         "CONFIG_FS_SYS_FLASH_ADDRESS": "0x60350000",         "CONFIG_FS_SYS_FLASH_SIZE": "0x270000",

这样就将0x2000的空间分配给了文件系统，文件系统空间变为0x270000.

分配后，注意要修改前面文件系统区域的配置，将两者起始地址和空间修改为一致的，如下

        {             "type": "FBD2",             "flash": "SFL1",             "name": "FSYS",             "offset": "0x350000",             "size": "0x270000",             "erase_block": "0x1000",             "logic_block": "0x200"         },