Tizen OS Recovery Image Generation Guide

※ Caution : This guide is based on rpi4

Prerequisite

1. Install squashfs
   1. Download squashfs rpm from Tizen public
      • x86_64
   2. Extract rpm with rpi2cpio
      • sudo apt-get install -y rpm2cpio
      • rpm2cpio (download squashfs rpm) | cpio -idv
   3. Copy mksquashfs from extract rpm to /usr/bin
      • sudo cp (rpm extract path)/usr/bin/mksqushfs /usr/bin/mksquashfs
      • sudo cp (rpm extract path)/usr/bin/unsquashfs /usr/bin/unsquashfs

Generate Recovery Image

1. Download recovery image generator : tota-upg
   1. Clone repository
      • git clone (repository)
   2. Change branch to tizen
      • cd tota-upg
      • git checkout -t remotes/origin/tizen
2. Download boot/platform image in tota-upg

   ※ You must have only one image per directory. multiple image in directory cause unintentional behavior.

   • Boot image path : tota-upg/recovery/target/rpi/boot
   • Platform image path : tota-upg/recovery/target/rpi/platform
3. Generate Recovery Image : tota-upg/recovery/scripts/generate_package.sh (tota-upg path) rpi
4. Check result : tota-upg/recovery/target/rpi/result/tizen-recovery.img

Manage config file

1. If you have any changes below property, modify config file

   ※ Notice : modifying config file is not recommended if not required.

   • Config file path : tota-upg/recovery/target/rpi/cfg/recovery.cfg
2. Config file format

ID	IMG NAME(in tar)	BLOCK DEV
BOOT	boot.img	/dev/mmcblk0p1
rootfs	rootfs.img	/dev/mmcblk0p2
system-data	system-data.img	/dev/mmcblk0p3
user	user.img	/dev/mmcblk0p5
modules	modules.img	/dev/mmcblk0p6
ramdisk	ramdisk.img	/dev/mmcblk0p7
ramdisk-recovery	ramdisk-recovery.img	/dev/mmcblk0p8