1 ## Combine images 2 3 ### Usage 4 ``python mk_combined_img.py [--input <filename> --output <filename>]`` 5 The defaults of `--input` and `--output` are: 6 * `./image_config` for `--input` 7 * `$OUT/combined.img` for `--output` 8 9 ### Prerequisite 10 The script will try to get environment variables ``$ANDROID_HOST_OUT`` and ``$OUT`` 11 If you have built android these variables should exist and in place. 12 Make sure simg2img and sgdisk are in ``$ANDROID_HOST_OUT``, if not, do following: 13 14 ``$ cd $ANDROID_BUILD_TOP`` 15 16 ``$ m simg2img`` 17 18 ``$ m sgdisk`` 19 20 ### Functionality 21 * Combine multiple images into one image with multiple partitions 22 * Sparse image detection 23 24 ### The format of input config file 25 Each line with the order of ``</path/to/image>`` ``<partition label>`` ``<partition number>`` 26 27 28 ``<partition number>`` should be within range of ``[1, number of lines]`` 29 and cannot be repeated. 30 31 ### Config file example 32 ``` 33 $OUT/sparse_system.img system 1 34 $OUT/encryptionkey.img encrypt 4 35 $OUT/vendor.img vendor 5 36 $OUT/sparse_userdata.img userdata 3 37 $OUT/cache.img cache 2 38 ``` 39 40 ### TODO 41 * Output in sparse format 42 * Detect images that already have partitions in them. 43 * Auto genereate config file 44 45
