【海思3751系列新建自定义分区】

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分区新建分为两个步骤完成

第一步创建分区盘符，第二步给新建分区设置访问权限。

新建分区盘符

涉及文件如下：

1. device/hisilicon/Hi3751V350/etc/Hi3751V350-slaveboot-emmc.xml ，新建对应分区表信息；

<Part Sel="0" PartitionName="selfdata" FlashType="emmc" FileSystem="ext3/4" Start="2148M" Length="100M" SelectFile="selfdata.ext4"/> 

2. device/hisilicon/bigfish/build/bigfish.mk ，新建分区对应的文件目录；

INSTALLED_SELFIMAGE_TARGET := $(PRODUCT_OUT)/selfdata.img TARGET_OUT_SELF:=$(PRODUCT_OUT)/selfdata 

3. device/hisilicon/bigfish/build/ext4.mk ，新建分区大小配置与生成；

$(EXT4_IMG):$(INSTALLED_SYSTEMIMAGE) $(INSTALLED_USERDATAIMAGE_TARGET) $(INSTALLED_CACHEIMAGE_TARGET) $(INSTALLED_VENDORIMAGE_TARGET) atv securestore logimage selfdataimage cp -r $(PRODUCT_OUT)/system.img $(EMMC_PRODUCT_OUT)/system.ext4 cp -r $(PRODUCT_OUT)/userdata.img $(EMMC_PRODUCT_OUT)/userdata.ext4 cp -r $(PRODUCT_OUT)/cache.img $(EMMC_PRODUCT_OUT)/cache.ext4 include $(CLEAR_VARS) $(shell mkdir -p $(TARGET_ROOT_OUT)/selfdata ) selfdata_intermediates := $(call intermediates-dir-for,PACKAGING, selfdata) SELF_IMAGE := $(selfdata_intermediates)/selfdata.img $(SELF_IMAGE): $(INSTALLED_VENDORIMAGE_TARGET) mkdir -p $(TARGET_OUT_SELF) $(hide) rm -rf $(selfdata_intermediates) && mkdir -p $(selfdata_intermediates) $(call generate-userimage-prop-dictionary, $(selfdata_intermediates)/selfdata_image_info.txt, \ mount_point=selfdata \ partition_size= \ skip_fsck=true \ extfs_rsv_pct=0) build/make/tools/releasetools/build_image.py $(TARGET_OUT_SELF) \ $(selfdata_intermediates)/selfdata_image_info.txt $(INSTALLED_SELFIMAGE_TARGET) $(PRODUCT_OUT) .PHONY: selfdataimage selfdataimage: $(SELF_IMAGE) cp -r $(PRODUCT_OUT)/selfdata.img $(EMMC_PRODUCT_OUT)/selfdata.ext4 

4. device/hisilicon/bigfish/etc/fstab.bigfish ，分区格式定义；

/dev/block/platform/soc/f.emmc/by-name/selfdata /selfdata ext4 nosuid,nodev,noatime,barrier=1,data=ordered wait 

修改分区访问权限

涉及文件如下：

1. device/hisilicon/bigfish/etc/initrc/vendor/etc/init/hw/init.bigfish.rc ，修改文件夹访问权限；

on fs # selfdata partition chown system system /selfdata chmod 777 /selfdata restorecon_recursive /selfdata 

2.te文件属性配置，新增新建分区可访问te配置；

device/hisilicon/bigfish/external/sepolicy/patch/recovery_adapt/file_contexts # for recovery /dev/block/mmcblk0p26 u:object_r:userdata_block_device:s0 device/hisilicon/bigfish/external/sepolicy/patch/recovery_default/file_contexts # for recovery /dev/block/mmcblk0p26 u:object_r:userdata_block_device:s0 device/hisilicon/bigfish/external/sepolicy/vendor/file.te type selfdata_file,file_type; device/hisilicon/bigfish/external/sepolicy/vendor/file_contexts # p18(tconparam) p19(demura) p20(system) p21(vendor) p22(atv) p23(log) p25(selfdata) /dev/block/mmcblk0p25 u:object_r:hifsck_block_device:s0 #selfdata files /selfdata(/.*)? u:object_r:selfdata_file:s0 device/hisilicon/bigfish/external/sepolicy/vendor/init.te allow init selfdata_file:dir { mounton }; device/hisilicon/bigfish/external/sepolicy/vendor/kernel.te allow kernel selfdata_file:dir { write open read getattr remove_name add_name search }; allow kernel selfdata_file:file { read write open getattr rename unlink create }; device/hisilicon/bigfish/external/sepolicy/vendor/shell.te allow shell selfdata_file:dir { getattr setattr search create read open write add_name remove_name }; allow shell selfdata_file:file { create getattr setattr open read append rename }; device/hisilicon/bigfish/external/sepolicy/vendor/system_app.te allow system_app selfdata_file:dir{ search getattr read open }; allow system_app selfdata_file:file{ read write open create getattr setattr };