/**************************************************************************** * I.MX6 Android 5.1 快速合成系统 * 说明： * Android源代码编译系统是一件很痛苦的事，主要是在修改了一些很小的东西，但 * 要重新编译，要等很久才能编译完，如使用了mmm编译完，只是要打包一下system.img * 就行了，没必要去做那么多检查编译工作，所以这里跟一下系统合成原来，再精简 * 一下，做一个快速合成系统的工具:a51m(shell 脚本)。 * * 2016-11-10 深圳 南山平山村 曾剑锋 ***************************************************************************/ \\\\\\\\\\\\\\\\\-*-目录-*-// | 一、Android 5.1 生成U-Boot信息解析 | 二、Android 5.1 完整生成img镜像信息 | 三、Android 5.1 生成内核信息解析 | 四、解读 Target boot image | 五、解读 Making recovery image | 六、解读 Target system fs image | 七、a51m脚本 --------------------------------------------一、Android 5.1 生成U-Boot信息解析： 1. 命令行输出信息如下： for ubootplat in imx6q:mx6qsabresdandroid_config imx6dl:mx6dlsabresdandroid_config imx6qp:mx6qpsabresdandroid_config; do \ UBOOT_PLATFORM=`echo $ubootplat | cut -d':' -f1`; \ UBOOT_CONFIG=`echo $ubootplat | cut -d':' -f2`; \ echo ; \ echo ; \ make -C bootable/bootloader/uboot-imx/ distclean ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-; \ make -C bootable/bootloader/uboot-imx/ $UBOOT_CONFIG ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-; \ make -C bootable/bootloader/uboot-imx/ ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-; \ install -D bootable/bootloader/uboot-imx/u-boot.imx out/target/product/sabresd_6dq/u-boot-$UBOOT_PLATFORM.imx; \ install -D bootable/bootloader/uboot-imx/u-boot.imx out/target/product/sabresd_6dq/u-boot.imx; \ done 2. 整理并解读代码如下： for ubootplat in imx6q:mx6qsabresdandroid_config imx6dl:mx6dlsabresdandroid_config imx6qp:mx6qpsabresdandroid_config; do # 获取平台类型 UBOOT_PLATFORM=`echo $ubootplat | cut -d':' -f1`; # 获取配置文件名 UBOOT_CONFIG=`echo $ubootplat | cut -d':' -f2`; echo ; echo ; # 清空之前的编译 make -C bootable/bootloader/uboot-imx/ distclean ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-; # 重新配置 make -C bootable/bootloader/uboot-imx/ $UBOOT_CONFIG ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-; # 编译 make -C bootable/bootloader/uboot-imx/ ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-; # 拷贝 install -D bootable/bootloader/uboot-imx/u-boot.imx out/target/product/sabresd_6dq/u-boot-$UBOOT_PLATFORM.imx; # 拷贝 install -D bootable/bootloader/uboot-imx/u-boot.imx out/target/product/sabresd_6dq/u-boot.imx; done二、Android 5.1 完整生成img镜像信息： Target ram disk: out/target/product/sabresd_6dq/ramdisk.img Target boot image: out/target/product/sabresd_6dq/boot.img for dtsplat in imx6q:imx6q-sabresd.dtb imx6dl:imx6dl-sabresd.dtb imx6q-ldo:imx6q-sabresd-ldo.dtb imx6qp:imx6qp-sabresd.dtb; do \ DTS_PLATFORM=`echo $dtsplat | cut -d':' -f1`; \ DTS_BOARD=`echo $dtsplat | cut -d':' -f2`; \ BOOT_IMAGE_BOARD=out/target/product/sabresd_6dq/boot-$DTS_PLATFORM.img; \ out/host/linux-x86/bin/mkbootimg --kernel out/target/product/sabresd_6dq/kernel --ramdisk out/target/product/sabresd_6dq/ramdisk.img --cmdline "console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off vmalloc=256M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=384M" --base 0x14000000 --second out/target/product/sabresd_6dq/$DTS_BOARD --output out/target/product/sabresd_6dq/boot.img; \ out/host/linux-x86/bin/boot_signer /boot out/target/product/sabresd_6dq/boot.img build/target/product/security/verity.pk8 build/target/product/security/verity.x509.pem out/target/product/sabresd_6dq/boot.img; \ size=$(for i in out/target/product/sabresd_6dq/boot.img; do stat --format "%s" "$i" | tr -d '\n'; echo +; done; echo 0); total=$(( $( echo "$size" ) )); printname=$(echo -n "out/target/product/sabresd_6dq/boot.img" | tr " " +); img_blocksize=4224; twoblocks=$((img_blocksize * 2)); onepct=$(((((17301504 / 100) - 1) / img_blocksize + 1) * img_blocksize)); reserve=$((twoblocks > onepct ? twoblocks : onepct)); maxsize=$((17301504 - reserve)); echo "$printname maxsize=$maxsize blocksize=$img_blocksize total=$total reserve=$reserve"; if [ "$total" -gt "$maxsize" ]; then echo "error: $printname too large ($total > [17301504 - $reserve])"; false; elif [ "$total" -gt $((maxsize - 32768)) ]; then echo "WARNING: $printname approaching size limit ($total now; limit $maxsize)"; fi ; \ cp -f out/target/product/sabresd_6dq/boot.img $BOOT_IMAGE_BOARD; \ done out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8189223 reserve=173184 out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8189223 reserve=173184 out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8189223 reserve=173184 out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8191271 reserve=173184 ----- Making recovery image ------ Copying baseline ramdisk... Modifying ramdisk contents... for dtsplat in imx6q:imx6q-sabresd.dtb imx6dl:imx6dl-sabresd.dtb imx6q-ldo:imx6q-sabresd-ldo.dtb imx6qp:imx6qp-sabresd.dtb; do \ DTS_PLATFORM=`echo $dtsplat | cut -d':' -f1`; \ DTS_BOARD=`echo $dtsplat | cut -d':' -f2`; \ RECOVERY_IMAGE_BOARD=out/target/product/sabresd_6dq/recovery-$DTS_PLATFORM.img; \ out/host/linux-x86/bin/mkbootimg --kernel out/target/product/sabresd_6dq/kernel --ramdisk out/target/product/sabresd_6dq/ramdisk-recovery.img --cmdline "console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off vmalloc=256M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=384M" --base 0x14000000 --second out/target/product/sabresd_6dq/$DTS_BOARD --output out/target/product/sabresd_6dq/recovery.img; \ if [ true = true ]; then \ out/host/linux-x86/bin/boot_signer /recovery out/target/product/sabresd_6dq/recovery.img build/target/product/security/verity.pk8 build/target/product/security/verity.x509.pem out/target/product/sabresd_6dq/recovery.img; \ fi;\ size=$(for i in out/target/product/sabresd_6dq/recovery.img; do stat --format "%s" "$i" | tr -d '\n'; echo +; done; echo 0); total=$(( $( echo "$size" ) )); printname=$(echo -n "out/target/product/sabresd_6dq/recovery.img" | tr " " +); img_blocksize=4224; twoblocks=$((img_blocksize * 2)); onepct=$(((((17301504 / 100) - 1) / img_blocksize + 1) * img_blocksize)); reserve=$((twoblocks > onepct ? twoblocks : onepct)); maxsize=$((17301504 - reserve)); echo "$printname maxsize=$maxsize blocksize=$img_blocksize total=$total reserve=$reserve"; if [ "$total" -gt "$maxsize" ]; then echo "error: $printname too large ($total > [17301504 - $reserve])"; false; elif [ "$total" -gt $((maxsize - 32768)) ]; then echo "WARNING: $printname approaching size limit ($total now; limit $maxsize)"; fi ; \ cp -f out/target/product/sabresd_6dq/recovery.img $RECOVERY_IMAGE_BOARD; \ done out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8797484 reserve=173184 out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8797484 reserve=173184 out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8797484 reserve=173184 out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8799532 reserve=173184 ----- Made recovery image: out/target/product/sabresd_6dq/recovery.img -------- Installed file list: out/target/product/sabresd_6dq/installed-files.txt Target system fs image: out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img make_ext4fs -s -T -1 -S out/target/product/sabresd_6dq/root/file_contexts -l 374476800 -a system out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img out/target/product/sabresd_6dq/system Creating filesystem with parameters: Size: 374476800 Block size: 4096 Blocks per group: 32768 Inodes per group: 7632 Inode size: 256 Journal blocks: 1428 Label: Blocks: 91425 Block groups: 3 Reserved block group size: 23 Created filesystem with 1304/22896 inodes and 79090/91425 blocks Running: mkuserimg.sh -s out/target/product/sabresd_6dq/system out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img ext4 system 374476800 out/target/product/sabresd_6dq/root/file_contexts build_verity_tree -A aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7 out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity.img system/extras/verity/build_verity_metadata.py 374476800 /tmp/tmpMr__Ct_verity_images/verity_metadata.img c05456d1171333727af2a3f82feb59856e56229fe81c75c90fd2a1359893a438 aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7 /dev/block/mmcblk3p5 out/host/linux-x86/bin/verity_signer build/target/product/security/verity.pk8 append2simg out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity_metadata.img append2simg out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity.img Construct recovery from boot mkdir -p out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/ PATH=out/host/linux-x86/bin:$PATH out/host/linux-x86/bin/imgdiff out/target/product/sabresd_6dq/boot.img out/target/product/sabresd_6dq/recovery.img out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p chunk 0: type 0 start 0 len 7274506 chunk 1: type 2 start 7274506 len 1480704 chunk 2: type 0 start 8142159 len 49112 Construct patches for 3 chunks... patch 0 is 205 bytes (of 7274506) patch 1 is 435259 bytes (of 867653) patch 2 is 594 bytes (of 49112) chunk 0: normal ( 0, 7274506) 205 chunk 1: deflate ( 7274506, 1476108) 435259 (null) chunk 2: normal ( 8750614, 48918) 594 Install system fs image: out/target/product/sabresd_6dq/system.img out/target/product/sabresd_6dq/system.img+out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p maxsize=385389312 blocksize=4224 total=323391834 reserve=3894528 #### make completed successfully (53:14 (mm:ss)) ####三、Android 5.1 生成内核信息解析： 1. 命令行输出信息如下： Target ram disk: out/target/product/sabresd_6dq/ramdisk.img Target boot image: out/target/product/sabresd_6dq/boot.img install -D kernel_imx/arch/arm/boot/zImage out/target/product/sabresd_6dq/kernel for dtsplat in imx6q:imx6q-sabresd.dtb imx6dl:imx6dl-sabresd.dtb imx6q-ldo:imx6q-sabresd-ldo.dtb imx6qp:imx6qp-sabresd.dtb; do \ DTS_PLATFORM=`echo $dtsplat | cut -d':' -f1`; \ DTS_BOARD=`echo $dtsplat | cut -d':' -f2`; \ install -D kernel_imx/arch/arm/boot/dts/$DTS_BOARD out/target/product/sabresd_6dq/$DTS_BOARD; \ done make -C kernel_imx modules ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi- LOADADDR=0x10008000 2. 整理并解读代码如下： for dtsplat in imx6q:imx6q-sabresd.dtb imx6dl:imx6dl-sabresd.dtb imx6q-ldo:imx6q-sabresd-ldo.dtb imx6qp:imx6qp-sabresd.dtb; do DTS_PLATFORM=`echo $dtsplat | cut -d':' -f1`; DTS_BOARD=`echo $dtsplat | cut -d':' -f2`; install -D kernel_imx/arch/arm/boot/dts/$DTS_BOARD out/target/product/sabresd_6dq/$DTS_BOARD; done 3. 由上可知out/target/product/sabresd_6dq/kernel是kernel_imx/arch/arm/boot/zImage文件，同时编译生成的dts在arch/arm/boot/dts目录下面。四、解读 Target boot image： 1. 命令行输出信息如下： Target ram disk: out/target/product/sabresd_6dq/ramdisk.img Target boot image: out/target/product/sabresd_6dq/boot.img for dtsplat in imx6q:imx6q-sabresd.dtb imx6dl:imx6dl-sabresd.dtb imx6q-ldo:imx6q-sabresd-ldo.dtb imx6qp:imx6qp-sabresd.dtb; do \ DTS_PLATFORM=`echo $dtsplat | cut -d':' -f1`; \ DTS_BOARD=`echo $dtsplat | cut -d':' -f2`; \ BOOT_IMAGE_BOARD=out/target/product/sabresd_6dq/boot-$DTS_PLATFORM.img; \ out/host/linux-x86/bin/mkbootimg --kernel out/target/product/sabresd_6dq/kernel --ramdisk out/target/product/sabresd_6dq/ramdisk.img --cmdline "console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off vmalloc=256M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=384M" --base 0x14000000 --second out/target/product/sabresd_6dq/$DTS_BOARD --output out/target/product/sabresd_6dq/boot.img; \ out/host/linux-x86/bin/boot_signer /boot out/target/product/sabresd_6dq/boot.img build/target/product/security/verity.pk8 build/target/product/security/verity.x509.pem out/target/product/sabresd_6dq/boot.img; \ size=$(for i in out/target/product/sabresd_6dq/boot.img; do stat --format "%s" "$i" | tr -d '\n'; echo +; done; echo 0); total=$(( $( echo "$size" ) )); printname=$(echo -n "out/target/product/sabresd_6dq/boot.img" | tr " " +); img_blocksize=4224; twoblocks=$((img_blocksize * 2)); onepct=$(((((17301504 / 100) - 1) / img_blocksize + 1) * img_blocksize)); reserve=$((twoblocks > onepct ? twoblocks : onepct)); maxsize=$((17301504 - reserve)); echo "$printname maxsize=$maxsize blocksize=$img_blocksize total=$total reserve=$reserve"; if [ "$total" -gt "$maxsize" ]; then echo "error: $printname too large ($total > [17301504 - $reserve])"; false; elif [ "$total" -gt $((maxsize - 32768)) ]; then echo "WARNING: $printname approaching size limit ($total now; limit $maxsize)"; fi ; \ cp -f out/target/product/sabresd_6dq/boot.img $BOOT_IMAGE_BOARD; \ done out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8189223 reserve=173184 out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8189223 reserve=173184 out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8189223 reserve=173184 out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8191271 reserve=173184 2. 由上可知，ramdisk合成没有给出信息： 1. 参考文档： 1. ramdisk.img及boot.img的生成过程 http://blog.csdn.net/zhijianjingling00/article/details/16841683 2. 修改build/core/Makefile： ...... # We just build this directly to the install location. INSTALLED_RAMDISK_TARGET := $(BUILT_RAMDISK_TARGET) $(INSTALLED_RAMDISK_TARGET): $(MKBOOTFS) $(INTERNAL_RAMDISK_FILES) | $(MINIGZIP) $(call pretty,"Target ram disk: $@") $(MKBOOTFS) $(TARGET_ROOT_OUT) | $(MINIGZIP) > $@ # 去掉前面的"$(hide)" ...... 3. 得到输出信息： out/host/linux-x86/bin/mkbootfs out/target/product/sabresd_6dq/root | out/host/linux-x86/bin/minigzip > out/target/product/sabresd_6dq/ramdisk.img 2. 整理并解读代码如下： # for循环迭代以下四种情况： # 1. dtsplat：imx6q:imx6q-sabresd.dtb # 2. dtsplat：imx6dl:imx6dl-sabresd.dtb # 3. dtsplat：imx6q-ldo:imx6q-sabresd-ldo.dtb # 4. dtsplat：imx6qp:imx6qp-sabresd.dtb for dtsplat in imx6q:imx6q-sabresd.dtb imx6dl:imx6dl-sabresd.dtb imx6q-ldo:imx6q-sabresd-ldo.dtb imx6qp:imx6qp-sabresd.dtb; do # 截取dtsplat中的冒号前面的那部分字符，也就是： # 1. imx6q； # 2. imx6dl； # 3. imx6q-ldo； # 4. imx6qp； DTS_PLATFORM=`echo $dtsplat | cut -d':' -f1`; # 截取dtsplat中的冒号后面的那部分字符，也就是： # 1. imx6q-sabresd.dtb； # 2. imx6dl-sabresd.dtb； # 3. imx6q-sabresd-ldo.dtb； # 4. imx6qp-sabresd.dtb； DTS_BOARD=`echo $dtsplat | cut -d':' -f2`; # 合成当前次要生成的boot.img文件名 BOOT_IMAGE_BOARD=out/target/product/sabresd_6dq/boot-$DTS_PLATFORM.img; # 使用mkbootimg合成boot.img文件，除了dts文件，其他的都是明确的 out/host/linux-x86/bin/mkbootimg --kernel out/target/product/sabresd_6dq/kernel --ramdisk out/target/product/sabresd_6dq/ramdisk.img --cmdline "console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off vmalloc=256M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=384M" --base 0x14000000 --second out/target/product/sabresd_6dq/$DTS_BOARD --output out/target/product/sabresd_6dq/boot.img; # 这里不是很明确到底要在做什么 out/host/linux-x86/bin/boot_signer /boot out/target/product/sabresd_6dq/boot.img build/target/product/security/verity.pk8 build/target/product/security/verity.x509.pem out/target/product/sabresd_6dq/boot.img; # 接下来这段更多的是校验文件大小是否超出16M， size=$( for i in out/target/product/sabresd_6dq/boot.img; do stat --format "%s" "$i" | tr -d '\n'; echo +; done; echo 0 ); total=$(( $( echo "$size" ) )); printname=$(echo -n "out/target/product/sabresd_6dq/boot.img" | tr " " +); img_blocksize=4224; twoblocks=$((img_blocksize * 2)); onepct=$(((((17301504 / 100) - 1) / img_blocksize + 1) * img_blocksize)); reserve=$((twoblocks > onepct ? twoblocks : onepct)); maxsize=$((17301504 - reserve)); echo "$printname maxsize=$maxsize blocksize=$img_blocksize total=$total reserve=$reserve"; if [ "$total" -gt "$maxsize" ]; then echo "error: $printname too large ($total > [17301504 - $reserve])"; false; elif [ "$total" -gt $((maxsize - 32768)) ]; then echo "WARNING: $printname approaching size limit ($total now; limit $maxsize)"; fi ; # 以上检查都正常，拷贝文件 cp -f out/target/product/sabresd_6dq/boot.img $BOOT_IMAGE_BOARD; done 3. 和上面的shell脚本对比，输出信息正常： out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8189223 reserve=173184 out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8189223 reserve=173184 out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8189223 reserve=173184 out/target/product/sabresd_6dq/boot.img maxsize=17128320 blocksize=4224 total=8191271 reserve=173184五、解读 Making recovery image ： 1. 命令行输出信息如下： ----- Making recovery image ------ Copying baseline ramdisk... Modifying ramdisk contents... for dtsplat in imx6q:imx6q-sabresd.dtb imx6dl:imx6dl-sabresd.dtb imx6q-ldo:imx6q-sabresd-ldo.dtb imx6qp:imx6qp-sabresd.dtb; do \ DTS_PLATFORM=`echo $dtsplat | cut -d':' -f1`; \ DTS_BOARD=`echo $dtsplat | cut -d':' -f2`; \ RECOVERY_IMAGE_BOARD=out/target/product/sabresd_6dq/recovery-$DTS_PLATFORM.img; \ out/host/linux-x86/bin/mkbootimg --kernel out/target/product/sabresd_6dq/kernel --ramdisk out/target/product/sabresd_6dq/ramdisk-recovery.img --cmdline "console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off vmalloc=256M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=384M" --base 0x14000000 --second out/target/product/sabresd_6dq/$DTS_BOARD --output out/target/product/sabresd_6dq/recovery.img; \ if [ true = true ]; then \ out/host/linux-x86/bin/boot_signer /recovery out/target/product/sabresd_6dq/recovery.img build/target/product/security/verity.pk8 build/target/product/security/verity.x509.pem out/target/product/sabresd_6dq/recovery.img; \ fi;\ size=$(for i in out/target/product/sabresd_6dq/recovery.img; do stat --format "%s" "$i" | tr -d '\n'; echo +; done; echo 0); total=$(( $( echo "$size" ) )); printname=$(echo -n "out/target/product/sabresd_6dq/recovery.img" | tr " " +); img_blocksize=4224; twoblocks=$((img_blocksize * 2)); onepct=$(((((17301504 / 100) - 1) / img_blocksize + 1) * img_blocksize)); reserve=$((twoblocks > onepct ? twoblocks : onepct)); maxsize=$((17301504 - reserve)); echo "$printname maxsize=$maxsize blocksize=$img_blocksize total=$total reserve=$reserve"; if [ "$total" -gt "$maxsize" ]; then echo "error: $printname too large ($total > [17301504 - $reserve])"; false; elif [ "$total" -gt $((maxsize - 32768)) ]; then echo "WARNING: $printname approaching size limit ($total now; limit $maxsize)"; fi ; \ cp -f out/target/product/sabresd_6dq/recovery.img $RECOVERY_IMAGE_BOARD; \ done out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8797484 reserve=173184 out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8797484 reserve=173184 out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8797484 reserve=173184 out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8799532 reserve=173184 ----- Made recovery image: out/target/product/sabresd_6dq/recovery.img -------- 2. 整理并解读代码如下： # for循环迭代以下四种情况： # 1. dtsplat：imx6q:imx6q-sabresd.dtb # 2. dtsplat：imx6dl:imx6dl-sabresd.dtb # 3. dtsplat：imx6q-ldo:imx6q-sabresd-ldo.dtb # 4. dtsplat：imx6qp:imx6qp-sabresd.dtb for dtsplat in imx6q:imx6q-sabresd.dtb imx6dl:imx6dl-sabresd.dtb imx6q-ldo:imx6q-sabresd-ldo.dtb imx6qp:imx6qp-sabresd.dtb; do # 截取dtsplat中的冒号前面的那部分字符，也就是： # 1. imx6q； # 2. imx6dl； # 3. imx6q-ldo； # 4. imx6qp； DTS_PLATFORM=`echo $dtsplat | cut -d':' -f1`; # 截取dtsplat中的冒号后面的那部分字符，也就是： # 1. imx6q-sabresd.dtb； # 2. imx6dl-sabresd.dtb； # 3. imx6q-sabresd-ldo.dtb； # 4. imx6qp-sabresd.dtb； DTS_BOARD=`echo $dtsplat | cut -d':' -f2`; # 合成当前次要生成的recovery.img文件名 RECOVERY_IMAGE_BOARD=out/target/product/sabresd_6dq/recovery-$DTS_PLATFORM.img; # 使用mkbootimg合成recovery.img文件，除了dts文件，其他的都是明确的，请对比boot.img合成的命令，几乎一样 # out/host/linux-x86/bin/mkbootimg --kernel out/target/product/sabresd_6dq/kernel --ramdisk out/target/product/sabresd_6dq/ramdisk.img --cmdline "console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off vmalloc=256M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=384M" --base 0x14000000 --second out/target/product/sabresd_6dq/$DTS_BOARD --output out/target/product/sabresd_6dq/boot.img; out/host/linux-x86/bin/mkbootimg --kernel out/target/product/sabresd_6dq/kernel --ramdisk out/target/product/sabresd_6dq/ramdisk-recovery.img --cmdline "console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off vmalloc=256M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=384M" --base 0x14000000 --second out/target/product/sabresd_6dq/$DTS_BOARD --output out/target/product/sabresd_6dq/recovery.img; # 加入校验，这里不是很明确到底要在做什么 if [ true = true ]; then out/host/linux-x86/bin/boot_signer /recovery out/target/product/sabresd_6dq/recovery.img build/target/product/security/verity.pk8 build/target/product/security/verity.x509.pem out/target/product/sabresd_6dq/recovery.img; fi; # 接下来这段更多的是校验文件大小是否超出16M， size=$( for i in out/target/product/sabresd_6dq/recovery.img; do stat --format "%s" "$i" | tr -d '\n'; echo +; done; echo 0 ); total=$(( $( echo "$size" ) )); printname=$(echo -n "out/target/product/sabresd_6dq/recovery.img" | tr " " +); img_blocksize=4224; twoblocks=$((img_blocksize * 2)); onepct=$(((((17301504 / 100) - 1) / img_blocksize + 1) * img_blocksize)); reserve=$((twoblocks > onepct ? twoblocks : onepct)); maxsize=$((17301504 - reserve)); echo "$printname maxsize=$maxsize blocksize=$img_blocksize total=$total reserve=$reserve"; if [ "$total" -gt "$maxsize" ]; then echo "error: $printname too large ($total > [17301504 - $reserve])"; false; elif [ "$total" -gt $((maxsize - 32768)) ]; then echo "WARNING: $printname approaching size limit ($total now; limit $maxsize)"; fi ; # 以上检查都正常，拷贝文件 cp -f out/target/product/sabresd_6dq/recovery.img $RECOVERY_IMAGE_BOARD; done 3. 和上面的shell脚本对比，输出信息正常： out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8797484 reserve=173184 out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8797484 reserve=173184 out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8797484 reserve=173184 out/target/product/sabresd_6dq/recovery.img maxsize=17128320 blocksize=4224 total=8799532 reserve=173184六、解读 Target system fs image： 1. 命令行输出信息如下： Target system fs image: out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img make_ext4fs -s -T -1 -S out/target/product/sabresd_6dq/root/file_contexts -l 374476800 -a system out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img out/target/product/sabresd_6dq/system Creating filesystem with parameters: Size: 374476800 Block size: 4096 Blocks per group: 32768 Inodes per group: 7632 Inode size: 256 Journal blocks: 1428 Label: Blocks: 91425 Block groups: 3 Reserved block group size: 23 Created filesystem with 1304/22896 inodes and 79090/91425 blocks Running: mkuserimg.sh -s out/target/product/sabresd_6dq/system out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img ext4 system 374476800 out/target/product/sabresd_6dq/root/file_contexts build_verity_tree -A aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7 out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity.img system/extras/verity/build_verity_metadata.py 374476800 /tmp/tmpMr__Ct_verity_images/verity_metadata.img c05456d1171333727af2a3f82feb59856e56229fe81c75c90fd2a1359893a438 aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7 /dev/block/mmcblk3p5 out/host/linux-x86/bin/verity_signer build/target/product/security/verity.pk8 append2simg out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity_metadata.img append2simg out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity.img Construct recovery from boot mkdir -p out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/ PATH=out/host/linux-x86/bin:$PATH out/host/linux-x86/bin/imgdiff out/target/product/sabresd_6dq/boot.img out/target/product/sabresd_6dq/recovery.img out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p chunk 0: type 0 start 0 len 7274506 chunk 1: type 2 start 7274506 len 1480704 chunk 2: type 0 start 8142159 len 49112 Construct patches for 3 chunks... patch 0 is 205 bytes (of 7274506) patch 1 is 435259 bytes (of 867653) patch 2 is 594 bytes (of 49112) chunk 0: normal ( 0, 7274506) 205 chunk 1: deflate ( 7274506, 1476108) 435259 (null) chunk 2: normal ( 8750614, 48918) 594 Install system fs image: out/target/product/sabresd_6dq/system.img out/target/product/sabresd_6dq/system.img+out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p maxsize=385389312 blocksize=4224 total=323391834 reserve=3894528 #### make completed successfully (53:14 (mm:ss)) #### 2. 如上可知，最后生成out/target/product/sabresd_6dq/system.img部分内容好像被隐藏了。 3. 为了看到整个程序执行信息，修改源代码： 1. 参考文档： 1. 参考文档：Android——编译体系中的【PRODUCT_COPY_FILES】【ALL_PREBUILT】【BUILD_PREBUILT】 http://blog.csdn.net/jscese/article/details/40615801 2. Android编译系统分析五：system.img的生成过程 http://blog.csdn.net/u011913612/article/details/52503318 3. Android系统镜像文件的打包过程分析 http://blog.csdn.net/Luoshengyang/article/details/20501657 2. 修改build/core/definitions.mk ...... define copy-file-to-target @mkdir -p $(dir $@) $(hide) $(ACP) -fp $< $@ # 移除前面的"$(hide)" endef ...... 3. 修改build/core/Makefile ...... INSTALLED_SYSTEMIMAGE := $(PRODUCT_OUT)/system.img ...... systemimage_intermediates := \ $(call intermediates-dir-for,PACKAGING,systemimage) BUILT_SYSTEMIMAGE := $(systemimage_intermediates)/system.img ...... $(INSTALLED_SYSTEMIMAGE): $(BUILT_SYSTEMIMAGE) $(RECOVERY_FROM_BOOT_PATCH) | $(ACP) @echo "Install system fs image: $@" $(copy-file-to-target) # 为了看到这部分完整的处理流程，将"$(hide)"去掉 # $(hide) $(call assert-max-image-size,$@ $(RECOVERY_FROM_BOOT_PATCH),$(BOARD_SYSTEMIMAGE_PARTITION_SIZE)) $(call assert-max-image-size,$@ $(RECOVERY_FROM_BOOT_PATCH),$(BOARD_SYSTEMIMAGE_PARTITION_SIZE)) systemimage: $(INSTALLED_SYSTEMIMAGE) ...... 4. 隐藏的处理信息如下： Install system fs image: out/target/product/sabresd_6dq/system.img out/host/linux-x86/bin/acp -fp out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img out/target/product/sabresd_6dq/system.img size=$(for i in out/target/product/sabresd_6dq/system.img out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p; do stat --format "%s" "$i" | tr -d '\n'; echo +; done; echo 0); total=$(( $( echo "$size" ) )); printname=$(echo -n "out/target/product/sabresd_6dq/system.img out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p" | tr " " +); img_blocksize=4224; twoblocks=$((img_blocksize * 2)); onepct=$(((((389283840 / 100) - 1) / img_blocksize + 1) * img_blocksize)); reserve=$((twoblocks > onepct ? twoblocks : onepct)); maxsize=$((389283840 - reserve)); echo "$printname maxsize=$maxsize blocksize=$img_blocksize total=$total reserve=$reserve"; if [ "$total" -gt "$maxsize" ]; then echo "error: $printname too large ($total > [389283840 - $reserve])"; false; elif [ "$total" -gt $((maxsize - 32768)) ]; then echo "WARNING: $printname approaching size limit ($total now; limit $maxsize)"; fi out/target/product/sabresd_6dq/system.img+out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p maxsize=385389312 blocksize=4224 total=323391834 reserve=3894528 # @ size=$(for i in out/target/product/sabresd_6dq/system.img out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p; do stat --format "%s" "$i" | tr -d '\n'; echo +; done; echo 0); total=$(( $( echo "$size" ) )); printname=$(echo -n "out/target/product/sabresd_6dq/system.img out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p" | tr " " +); img_blocksize=4224; twoblocks=$((img_blocksize * 2)); onepct=$(((((389283840 / 100) - 1) / img_blocksize + 1) * img_blocksize)); reserve=$((twoblocks > onepct ? twoblocks : onepct)); maxsize=$((389283840 - reserve)); echo "$printname maxsize=$maxsize blocksize=$img_blocksize total=$total reserve=$reserve"; if [ "$total" -gt "$maxsize" ]; then echo "error: $printname too large ($total > [389283840 - $reserve])"; false; elif [ "$total" -gt $((maxsize - 32768)) ]; then echo "WARNING: $printname approaching size limit ($total now; limit $maxsize)"; fi #### make completed successfully (52:35 (mm:ss)) #### 5. 整理并解读代码如下： 1. 制作ext4fs文件系统： make_ext4fs -s -T -1 -S out/target/product/sabresd_6dq/root/file_contexts -l 374476800 -a system out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img out/target/product/sabresd_6dq/system 2. 以下步骤基本上是没什么变量，所以也就不解析了： mkuserimg.sh -s out/target/product/sabresd_6dq/system out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img ext4 system 374476800 out/target/product/sabresd_6dq/root/file_contexts build_verity_tree -A aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7 out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity.img system/extras/verity/build_verity_metadata.py 374476800 /tmp/tmpMr__Ct_verity_images/verity_metadata.img c05456d1171333727af2a3f82feb59856e56229fe81c75c90fd2a1359893a438 aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7 /dev/block/mmcblk3p5 out/host/linux-x86/bin/verity_signer build/target/product/security/verity.pk8 append2simg out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity_metadata.img append2simg out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity.img mkdir -p out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/ PATH=out/host/linux-x86/bin:$PATH out/host/linux-x86/bin/imgdiff out/target/product/sabresd_6dq/boot.img out/target/product/sabresd_6dq/recovery.img out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p 3. 隐藏信息解读： # 直接将前面声场的system.img文件拷贝到输出目录中 out/host/linux-x86/bin/acp -fp out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img out/target/product/sabresd_6dq/system.img # 统计两个文件的大小，并判断system.img文件是否正常，和前面类似，其实没有过多的解析必要 size=$( for i in out/target/product/sabresd_6dq/system.img out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p; do stat --format "%s" "$i" | tr -d '\n'; echo +; done; echo 0 ); total=$(( $( echo "$size" ) )); # 将两个文件中的空格换成+号 printname=$(echo -n "out/target/product/sabresd_6dq/system.img out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p" | tr " " +); img_blocksize=4224; twoblocks=$((img_blocksize * 2)); onepct=$(((((389283840 / 100) - 1) / img_blocksize + 1) * img_blocksize)); reserve=$((twoblocks > onepct ? twoblocks : onepct)); maxsize=$((389283840 - reserve)); echo "$printname maxsize=$maxsize blocksize=$img_blocksize total=$total reserve=$reserve"; if [ "$total" -gt "$maxsize" ]; then echo "error: $printname too large ($total > [389283840 - $reserve])"; false; elif [ "$total" -gt $((maxsize - 32768)) ]; then echo "WARNING: $printname approaching size limit ($total now; limit $maxsize)"; fi 七、a51m脚本： #!/bin/bash # source build/envsetup.sh && lunch sabresd_6dq-user && make 2>&1 | tee build-log.txt if [ $# != 1 ]; then echo "USAGE:" echo " a51m" echo " 1. ub: U-Boot compile." echo " 2. bi: boot.img compile." echo " 3. fs: system.img repack" echo exit -1 fi # for U-Boot compile if [ $1 = "ub" ]; then for ubootplat in imx6q:mx6qsabresdandroid_config imx6dl:mx6dlsabresdandroid_config imx6qp:mx6qpsabresdandroid_config; do UBOOT_PLATFORM=`echo $ubootplat | cut -d':' -f1`; UBOOT_CONFIG=`echo $ubootplat | cut -d':' -f2`; echo ; echo ; make -C bootable/bootloader/uboot-imx/ distclean ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-; make -C bootable/bootloader/uboot-imx/ $UBOOT_CONFIG ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-; make -C bootable/bootloader/uboot-imx/ ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-; echo -e "\tcp bootable/bootloader/uboot-imx/u-boot.imx out/target/product/sabresd_6dq/u-boot-$UBOOT_PLATFORM.imx; " cp bootable/bootloader/uboot-imx/u-boot.imx out/target/product/sabresd_6dq/u-boot-$UBOOT_PLATFORM.imx; done echo -e "\n\033[32mGenerate u-boot.imx Work Over.\033[0m\n" exit 0 fi # for boot.img compile if [ $1 = "bi" ]; then make -C kernel_imx ARCH=arm CROSS_COMPILE=`pwd`/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi- LOADADDR=0x10008000 echo -e "\n\033[32m[Copy zImage file to target]:\033[0m" echo -e "\tcp kernel_imx/arch/arm/boot/zImage out/target/product/sabresd_6dq/kernel" cp kernel_imx/arch/arm/boot/zImage out/target/product/sabresd_6dq/kernel echo -e "\n\033[32m[Copy dtb file to target]:\033[0m" for dtsplat in imx6q:imx6q-sabresd.dtb imx6dl:imx6dl-sabresd.dtb imx6q-ldo:imx6q-sabresd-ldo.dtb imx6qp:imx6qp-sabresd.dtb; do DTS_PLATFORM=`echo $dtsplat | cut -d':' -f1`; DTS_BOARD=`echo $dtsplat | cut -d':' -f2`; echo -e "\tcp kernel_imx/arch/arm/boot/dts/$DTS_BOARD out/target/product/sabresd_6dq/$DTS_BOARD" cp kernel_imx/arch/arm/boot/dts/$DTS_BOARD out/target/product/sabresd_6dq/$DTS_BOARD; done echo -e "\n\033[32m[Generate ramdisk.img file to target]:\033[0m" echo -e "\tout/host/linux-x86/bin/mkbootfs out/target/product/sabresd_6dq/root | out/host/linux-x86/bin/minigzip > out/target/product/sabresd_6dq/ramdisk.img" out/host/linux-x86/bin/mkbootfs out/target/product/sabresd_6dq/root | out/host/linux-x86/bin/minigzip > out/target/product/sabresd_6dq/ramdisk.img echo -e "\n\033[32m[Generate boot.img file to target]:\033[0m" for dtsplat in imx6q:imx6q-sabresd.dtb imx6dl:imx6dl-sabresd.dtb imx6q-ldo:imx6q-sabresd-ldo.dtb imx6qp:imx6qp-sabresd.dtb; do DTS_PLATFORM=`echo $dtsplat | cut -d':' -f1`; DTS_BOARD=`echo $dtsplat | cut -d':' -f2`; BOOT_IMAGE_BOARD=out/target/product/sabresd_6dq/boot-$DTS_PLATFORM.img; out/host/linux-x86/bin/mkbootimg --kernel out/target/product/sabresd_6dq/kernel --ramdisk out/target/product/sabresd_6dq/ramdisk.img --cmdline "console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off vmalloc=256M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=384M" --base 0x14000000 --second out/target/product/sabresd_6dq/$DTS_BOARD --output out/target/product/sabresd_6dq/boot.img; out/host/linux-x86/bin/boot_signer /boot out/target/product/sabresd_6dq/boot.img build/target/product/security/verity.pk8 build/target/product/security/verity.x509.pem out/target/product/sabresd_6dq/boot.img; echo -e "\tcp -f out/target/product/sabresd_6dq/boot.img $BOOT_IMAGE_BOARD" cp -f out/target/product/sabresd_6dq/boot.img $BOOT_IMAGE_BOARD; done echo -e "\n\033[32mGenerate boot.img Work Over.\033[0m\n" exit 0 fi # for system.img repack if [ $1 = "fs" ]; then make_ext4fs -s -T -1 -S out/target/product/sabresd_6dq/root/file_contexts -l 374476800 -a system out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img out/target/product/sabresd_6dq/system mkuserimg.sh -s out/target/product/sabresd_6dq/system out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img ext4 system 374476800 out/target/product/sabresd_6dq/root/file_contexts mkdir -p /tmp/tmpMr__Ct_verity_images build_verity_tree -A aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7 out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity.img system/extras/verity/build_verity_metadata.py 374476800 /tmp/tmpMr__Ct_verity_images/verity_metadata.img c05456d1171333727af2a3f82feb59856e56229fe81c75c90fd2a1359893a438 aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7 /dev/block/mmcblk3p5 out/host/linux-x86/bin/verity_signer build/target/product/security/verity.pk8 append2simg out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity_metadata.img append2simg out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img /tmp/tmpMr__Ct_verity_images/verity.img mkdir -p out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/ PATH=out/host/linux-x86/bin:$PATH out/host/linux-x86/bin/imgdiff out/target/product/sabresd_6dq/boot.img out/target/product/sabresd_6dq/recovery.img out/target/product/sabresd_6dq/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p out/host/linux-x86/bin/acp -fp out/target/product/sabresd_6dq/obj/PACKAGING/systemimage_intermediates/system.img out/target/product/sabresd_6dq/system.img echo -e "\n\033[32mGenerate system.img Work Over.\033[0m\n" exit 0 fi echo "USAGE:" echo " a51m " echo " 1. ub: U-Boot compile." echo " 2. bi: boot.img compile." echo " 3. fs: system.img repack" echo