rootfs编译步骤2解析

1 编译步骤

make clean
make image-nocheck

获取image/output/images文件夹为期望文件

2 编译过程

makefile ： image-nocheck: symbol_link release image_all warning_message

2.1 symbol_link

symbol_link: kbuild/$(KERNEL_VERSION)/.config
kbuild/$(KERNEL_VERSION)/.config:$(MAKE) -f kbuild/$(KERNEL_VERSION)/kbuild.mk symbol_link

调用 kbuild.mk 的 symbol_link，在kbuild/4.9.84下生成必要的链接文件

ln -sf /opt/project/kbuild/4.9.84/i2m/arch /opt/project/kbuild/4.9.84/
ln -sf /opt/project/kbuild/4.9.84/i2m/drivers /opt/project/kbuild/4.9.84/
ln -sf /opt/project/kbuild/4.9.84/i2m/include /opt/project/kbuild/4.9.84/
ln -sf /opt/project/kbuild/4.9.84/i2m/scripts /opt/project/kbuild/4.9.84/
ln -sf /opt/project/kbuild/4.9.84/i2m/Makefile /opt/project/kbuild/4.9.84/
ln -sf /opt/project/kbuild/4.9.84/i2m/configs/nvr/011A/glibc/8.2.1/spinand/include/* /opt/project/kbuild/4.9.84/include/
ln -sf /opt/project/kbuild/4.9.84/i2m/configs/nvr/011A/glibc/8.2.1/spinand/Module.symvers /opt/project/kbuild/4.9.84/
ln -sf /opt/project/kbuild/4.9.84/i2m/configs/nvr/011A/glibc/8.2.1/spinand/.config /opt/project/kbuild/4.9.84/

2.2 release

无对应操作。

2.3 image_all

image_all: image_clean$(MAKE) -C image all./split_partion.sh
image_clean:$(MAKE) -C image clean

主要是对image目录进行编译。

2.3.1 ->image->clean

删除整个output目录

OUTPUTDIR:=$(CURDIR)/output
clean:
rm -rf $(OUTPUTDIR)

2.3.2 ->image->all

建立output/images/boot 层级目录
编译 rootfs，rootfs_recovery ，images， boot_images，scripts

all:@mkdir -p $(OUTPUTDIR)@mkdir -p $(IMAGEDIR)@mkdir -p $(IMAGEDIR)/boot
ifeq ($(FLASH_TYPE), spinand-ramdisk)$(MAKE) ramdisk
endif$(MAKE) rootfs$(MAKE) rootfs_recovery$(MAKE) images$(MAKE) boot_images$(MAKE) scripts

2.3.3 ->image->rootfs

ifeq ($(BOOT_TYPE), fastboot)include configs/$(CHIP)/rootfs_fastboot.mk
elseinclude configs/$(CHIP)/rootfs.mk
endif

在rootfs.mk 中定义了 rootfs:root app。

2.3.3.1 ->image->rootfs->root

rootfs 分区
– 解压 rootfs/rootfs.tar.gz 到 rootfs
– 复制 rootfs_add_files 到 rootfs
– 修改 sshd_config
– 修改 /etc/ssh/sshd_config
– 修改 /etc/inittab
– 修改 /etc/mdev.conf
– 修改 /etc/init.d/rcS
– 复制并配置 fw_printenv，fw_setenv 到 /etc
customer 分区
– 修改 demo.sh
miservice 分区
– 复制主处理器特有库文件

cp /opt/project/release/nvr/i2m/common/glibc/8.2.1/mi_libs/dynamic/* /opt/project/image/output/miservice/config/lib/
cp /opt/project/release/nvr/i2m/common/glibc/8.2.1/ex_libs/dynamic/* /opt/project/image/output/miservice/config/lib/

– 复制主处理器特有配置文件到 config

 cp -rf /opt/project/board/ini/LCM /opt/project/image/output/miservice/configcp -rf /opt/project/board/i2m/SSC011A-S01A/config/fbdev.ini  /opt/project/image/output/miservice/configcp -vf /opt/project/board/i2m/mmap/MMAP_I2M_128M.h  /opt/project/image/output/miservice/config/mmap.inicp -rvf /opt/project/release/nvr/i2m/common/glibc/8.2.1/bin/config_tool/*  /opt/project/image/output/miservice/configcd  /opt/project/image/output/miservice/config; chmod +x config_tool; ln -sf config_tool dump_config; ln -sf config_tool dump_mmapcp -rf /opt/project/board/i2m/vdec_fw  /opt/project/image/output/miservice/config/

– 依据 kernel_mod_list 文件列表复制kbuild/4.9.84/i2m/configs/nvr/011A/glibc/8.2.1/spinand/modules/ 特定modules ko文件到 config/modules/4.9.84/
– 依据 misc_mod_list 文件列表复制 release/nvr/i2m/common/glibc/8.2.1/modules/4.9.84/ 特定modules ko文件到 config/modules/4.9.84/
– 依据 .mods_depend 文件列表复制release/nvr/i2m/common/glibc/8.2.1/modules/4.9.84/ 特定modules ko文件到 config/modules/4.9.84/
– 复制 gpio_led_heartbeat.ko 到 config/modules/4.9.84/
– 依据 .misc_mod_list_late 文件列表复制release/nvr/i2m/common/glibc/8.2.1/modules/4.9.84/ 特定modules ko文件到 config/modules/4.9.84/
– 复制 PHY_TEST 和 interface_wlan 的相应工具，依据release/customer_tailor/$(CUSTOMER_TAILOR)开关变量

appconfigs 分区
– 从miservice分区获取 wifi相应配置 wpa_supplicant.conf
– 复制显示相应配置 /board/i2m/SSC011A-S01A/config/model/LCM.ini

2.3.3.2 ->image->rootfs->app

-include $(PROJ_ROOT)/…/sdk/verify/application/app.mk
依据 (PROJROOT)/release/customertailor/(PROJ_ROOT)/release/customer_tailor/(PROJROOT)/release/customertailor/(CUSTOMER_TAILOR)中开关进行对应应用的编译，如：

ifeq ($(verify_disp_init),enable)
ifeq ($(PROJECT),2D07)include $(APPLICATION_PATH)/disp_init/image.mk
endif

2.3.4 ->image->rootfs_recovery

-include configs/$(CHIP)/rootfs_recovery.mk
rootfs_recovery 功能需要被开启才生效。

解压 cd rootfs; tar xf rootfs.tar.gz
解压 tar xf busybox/$(BUSYBOX).tar.gz
解压 tar xf (LIBDIRPATH)/package/(LIB_DIR_PATH)/package/(LIBDIRPATH)/package/(LIBC).tar.gz
建立 /etc/reboot_to_recovery.sh
建立 /etc/reboot_to_normal.sh
如开启 OTA功能，则在/etc/init.d/rcS加入自动挂载OTA分区

2.3.5 ->image->images

include image.mk

依据 configs/current.configs 定义的
IMAGE_CONFIG = spinand.ubifs.p2.partition.config 生成对应的文件。
里面有对应的分区列表和分区配置
如

IMAGE_LIST = cis ipl ipl_cust uboot logo kernel rootfs miservice customer appconfigsrootfs$(RESOUCE)   = $(OUTPUTDIR)/rootfs
rootfs$(FSTYPE)    = ubifs
rootfs$(PATSIZE)   = 0xC200000
rootfs$(BOOTENV)   = console=ttyS0,115200 ubi.mtd=UBI,2048 root=ubi:rootfs rw rootfstype=ubifs init=/linuxrc rootwait=1

rootfs：

./build/mkfs.ubifs -F -r /opt/project/image/output/rootfs -o /opt/project/image/output/images/rootfs.ubifs -m 0x800 -e 126976 -c  `./build/calc_nand_mfs.sh rootfs 0x800 0x20000 0 0xC200000`

miservice

./build/mkfs.ubifs -F -r /opt/project/image/output/miservice/config -o /opt/project/image/output/images/miservice.ubifs -m 0x800 -e 126976 -c `./build/calc_nand_mfs.sh miservice 0x800 0x20000 0 0xA00000`

customer

./build/mkfs.ubifs -F -r /opt/project/image/output/customer -o /opt/project/image/output/images/customer.ubifs -m 0x800 -e 126976 -c `./build/calc_nand_mfs.sh customer 0x800 0x20000 0 0xA00000`

appconfigs

./build/mkfs.ubifs -F -r /opt/project/image/output/appconfigs -o /opt/project/image/output/images/appconfigs.ubifs -m 0x800 -e 126976 -c `./build/calc_nand_mfs.sh appconfigs 0x800 0x20000 0 0x400000`

cis_nofsimage 即 uboot分区

cp -vf /opt/project/board/i2m/boot/spinand/partition/* /opt/project/image/output/images/boot/
/opt/project/image/makefiletools/bin/pnigenerator -s 64 -p 2048 -b 64 -k 1024 -u 8 -l 0x20000 -t "0x140000(CIS),0x20000@0x140000(IPL0)2,0x20000(IPL1)2,0x20000(IPL_CUST0)2,0x20000(IPL_CUST1)2,0x40000(UBOOT0)4,0x40000(UBOOT1)4,0x20000(ENV0)1,0x20000(ENV1)1" -y "0x20000(KEY_CUST),0x60000(LOGO),0x500000(KERNEL),0x500000(RECOVERY),-(UBI)" -o /opt/project/image/output/images/boot/PARTINFO.pni
dd if=/dev/zero bs=2k count=2 | tr '\000' '\377' > /opt/project/image/output/images/cis.bin
dd if=/opt/project/image/output/images/boot/GCIS.bin of=/opt/project/image/output/images/cis.bin bs=2k count=1 conv=notrunc seek=0
dd if=/opt/project/image/output/images/boot/PARTINFO.pni of=/opt/project/image/output/images/cis.bin bs=2k count=1 conv=notrunc seek=1
cat /opt/project/image/output/images/boot/SPINANDINFO.sni >> /opt/project/image/output/images/cis.bin

ipl_nofsimage即 uboot分区

cp -vf /opt/project/board/i2m/boot/ipl/IPL.bin /opt/project/image/output/images/boot/
cp -vf /opt/project/board/i2m/boot/ipl/IPL.bin /opt/project/image/output/images/ipl_s.bin

ipl_cust_nofsimage即 uboot分区

cp -vf /opt/project/board/i2m/boot/ipl/IPL_CUST.bin /opt/project/image/output/images/boot/
cp -vf /opt/project/board/i2m/boot/ipl/IPL_CUST.bin /opt/project/image/output/images/ipl_cust_s.bin

uboot_nofsimage 即 uboot分区

cp -vf /opt/project/board/i2m/boot/spinand/uboot/u-boot_spinand.xz.img.bin /opt/project/image/output/images/boot/
cp -vf /opt/project/board/i2m/boot/spinand/uboot/u-boot_spinand.xz.img.bin /opt/project/image/output/images/uboot_s.bin

logo_nofsimage 即开机画面

/opt/project/image/makefiletools/bin/dispcfggen -c -o /opt/project/image/output/images/logo -p 0x7c00000 -s 0x300000 -d CC0702I50R
/opt/project/image/makefiletools/bin/logogen -a -i /opt/project/board/ini/misc/sigmastar1024_600.jpg -o /opt/project/image/output/images/logo
/opt/project/image/makefiletools/bin/logogen -a -i /opt/project/board/ini/misc/upgrade.jpg -o /opt/project/image/output/images/logo

kernel_nofsimage 内核分区

cp -rvf /opt/project/release/nvr/i2m/011A/glibc/8.2.1/bin/kernel/spinand/uImage.xz /opt/project/image/output/images/kernel

2.3.6 ->image->boot_images

include boot.mk

spinand.ubifs.p2.partition.boot.config 定义了
里面有对应的分区列表和分区配置
BOOT_IMAGE_LIST = cis ipl ipl_cust uboot
这里只需要重新制作二进制镜像时才用到，而工程中对应image均不需要在该阶段制作。

2.3.6 ->image->scripts

include configs/$(CHIP)/script_nand.mk

生成更新时用到的scrips/目录下的自动化文件，如：[[kernel.es

kernel_$(FLASH_TYPE)__script:@echo "# <- this is for comment / total file size must be less than 4KB" > $(SCRIPTDIR)/[[kernel.es@echo tftp $(TFTPDOWNLOADADDR) kernel >> $(SCRIPTDIR)/[[kernel.es@echo nand erase.part KERNEL >> $(SCRIPTDIR)/[[kernel.es@echo nand write.e $(TFTPDOWNLOADADDR) KERNEL \$${filesize} >> $(SCRIPTDIR)/[[kernel.es@echo nand erase.part RECOVERY >> $(SCRIPTDIR)/[[kernel.es@echo nand write.e $(TFTPDOWNLOADADDR) RECOVERY \$${filesize} >> $(SCRIPTDIR)/[[kernel.es@echo "% <- this is end of file symbol" >> $(SCRIPTDIR)/[[kernel.es@echo kernel-image done!!!

2.4 ./split_partion.sh

分析 customer.ubifs 大小，如果超过 36700160则进行拆分。

2.5 warning_message

目的：不存在git相应文件，不进行任何操作。如果有git，它大致是判断你是否对release/include进行了修改，进行告警说不要修改MI的自有头文件而已。

warning_message:@if [ -d ".git" ]; then \cd  release/include && \git status -s . | \awk -F' ' '{a = a "\033[7;34;42m""release/include/"$$2"\033[0m\n"} END {if(a){ \print "\033[5;41;33mWARNING!!!! You CAN NOT MODIFY HEAD FILES ,NEED MI OWNER TO REVIEW THE FOLLOWING INCONSISTENT HEAD FILES!!!\033[0m"; \print "\033[5;41;33mIF YOU WANT DEBUG ONLY, pelase using command :[[[ make image-nocheck ]]] INSTEADED!!!\033[0m"; \print a;}}'; \fi;