Firefly/Pad Windows Tools

dewet

Hi


RK3288 Firefly/Pad


SecureBootTool

Can you use the tool to make a locked bootloader?

What benefit does it provide?

Eg. Netflix 1080p and some apps require locked bootloader to work properly.
Can this app help with that?


OemTool

The app force close every-time I run it.


I want to backup some folders from userdata from installed apps's settings/data and put in system partition image.

When I flash firmware back I want the firmware to restore that userdata automatically.

How can I do that?

Or maybe a script in init.rc is needed like for preinstall apps that are installed automatically after boot, but can copy folders.

How to set something up like that.

Thanks

busybee

           ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
                 HOW TO MAKE ANDROID USERDATA PARTITION
                               PERSISTENT


                                Busybee
           ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━


Table of Contents
─────────────────

How to make Android Userdata Partition Persistent
.. Intro
.. Steps
..... 1. Prepare userdata Partition Data
..... 2. Pack the Data
..... 3. Add databk Partition
..... 4. Flash Fimware
..... 5. Check the Result
.. Related Source Code


How to make Android Userdata Partition Persistent
═════════════════════════════════════════════════

Intro
─────

  Android's userdata partition contains system configuration and user
  app data. If we can make this partition persistent, there's no need to
  modify system source code in order to customize the firmware.

  But the question is, flashing image directly to userdata partition
  does not work. When the device is flashed with new firmware, it will
  enter to recovery mode, where the userdata and cache partition will be
  formatted. Also, when user selects "Factory data reset" in Settings,
  the device will go to recovery mode to erase the userdata partition.

  One solution is, creating new partition to store persistent data of
  userdata partition. This special partition is only used to recover
  userdata partition, which will not be mounted or edited by Android
  system.

  RK3288 SDK has this solution builtin: pack userdata partition to an
  image file, and flash it to the special parition named "databk". Then
  in recovery mode, if databk partition exists, it'll be cloned to
  userdata parition.

  Here are the steps required:


Steps
─────

1. Prepare userdata Partition Data
╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌

  The default path `out/target/product/rk3288/data/' is used as an
  example, which will store persistent data of userdata partition.

  You can pack the userdata parition of device and extract it to the
  host via adb, for example:

  ╭────
  │ adb shell busybox tar -cz -C /data . | \
  │   tar -xz -C out/target/product/rk3288/data/
  │
  │ # You need to clean the data, removing unneccessary ones.
  ╰────


2. Pack the Data
╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌

  We assume the size of the userdata partition is 1GiB（Modify it below
  accordingly), Run:

  ╭────
  │ PATH=$PATH:./out/host/linux-x86/bin \
  │    out/host/linux-x86/bin/mkuserimg.sh \
  │    -s \
  │    out/target/product/rk3288/data/ \
  │    rockdev/Image-rk3288/databk.img \
  │    ext4 /data 1G
  ╰────

  An image file named databk.img will be created, which has format of
  sparse ext4fs.

  This file can be convert to ext4fs format, just for convenience of
  checking files and permissions. If you do not want this, skip it:
  ╭────
  │ out/host/linux-x86/bin/simg2img \
  │     rockdev/Image-rk3288/databk.img \
  │     rockdev/Image-rk3288/databk.ext4.img
  │
  │ sudo mkdir -p /mnt/databk
  │ sudo mount -o loop rockdev/Image-rk3288/databk.ext4.img /mnt/databk
  │ find /mnt/databk
  │ # ...
  │ sudo umount /mnt/databk
  ╰────


3. Add databk Partition
╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌

  Modify parameter file. Please pay attention that unit of partition
  size and offset is sector (which is 512 bytes here). The newly added
  "databk" partition must be larger than databk.img file.

  We recommend to split the "user" partition (which is internal storage
  of Android and is the last one in the flash storage.).

  Hint: you can fetch the parameter from your board using rkflashkit:

  ╭────
  │ sudo rkflashkit backup @parameter new_parameter.txt
  ╰────


4. Flash Fimware
╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌

  Use rkflashkit to flash the newly parameter and databk.img:

  ╭────
  │ sudo rkflashkit flash @parameter new_parameter.txt
  │ sudo rkflashkit flash @databk databk.img
  ╰────


5. Check the Result
╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌

  Selects "Factory data reset" in Settings to check the result.


Related Source Code
───────────────────

  The source code of recovering userdata partition is in
  bootable/recovery/recovery.cpp:

  ╭────
  │ static const char *DATA_PARTITION_NAME = "userdata";
  │ static const char *DATABK_PARTITION_NAME = "databk";
  │
  │ int start_to_clone(const char *data_devname, const char *databk_devname) {
  │
  │     if(simg2img(databk_devname, data_devname)){
  │         LOGE("null of databk ->failed to clone\n");
  │         return -1;
  │     }
  │     LOGI("Cloning %s to %s\n", databk_devname, data_devname);
  │     return 0;
  │ }
  │
  │ static int clone_data_if_exist() {
  │     // ...
  │     const MtdPartitionbyCmdline *databk_partition = mtd_find_partition_by_cmdline(DATABK_PARTITION_NAME);
  │     const MtdPartitionbyCmdline *data_partition = mtd_find_partition_by_cmdline(DATA_PARTITION_NAME);
  │     sprintf(data_devname, "/dev/block/mmcblk0p%d", data_partition->device_index);
  │     sprintf(databk_devname, "/dev/block/mmcblk0p%d", databk_partition->device_index);
  │
  │     // Start to clone
  │     if (start_to_clone(data_devname, databk_devname)) {
  │         LOGE("clone_data_if_exist->error clone data\n");
  │         return -1;
  │     }
  │     return 0;
  │ }
  ╰────

busybee

SecureBootTool

Can you use the tool to make a locked bootloader?

What benefit does it provide?

Eg. Netflix 1080p and some apps require locked bootloader to work properly.
Can this app help with that?

OemTool

The app force close every-time I run it.

I cannot find SecureBootTool or OemTool in the SDK.

dewet

I cannot find SecureBootTool or OemTool in the SDK.

Here are the tools

https://bitbucket.org/T-Firefly/firefly ... ws/?at=pad

SecureBootTool

Should this also be set to true if above tool is used, or what is this setting in build.prop?

ro.secure.hdcp2xkey.inside=false

FWFactoryToolv5.0

This tool also has clone system button on the left, can it also backup userdata partition or what is 'system clone'?

If eg. I only want to restore 1 or 2 folders from backup of userdata(eg. 10-20MB) after flashing new firmware, how can I do that with eg. script on bootup. Not wanting to create a full 1GB backup of userdata that takes a lot of space.

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