PROCESSOR-SDK-AM62X: AM62x Android Can not Enter Recovery Mode.

Hi,

if i'm not worng you flash on sdcard and not on emmc right ?

you can try to stop uboot boot put in fastboot mode with this command in uboot : fastboot 0

from  your pc launch :

fastboot erase misc

reboot and retry to see if you have same error.
SD Card support is experimental and not fully tested so issue is possible.

Hi Guillaume,

Actually,I still can't boot from SD card.

I am able to enter recovery mode now, but I can't enter any item on the screen.

Do I need to do any other settings?

Could you provide some opinions regarding my ideas?

 I want to implement a method to flash AOSP image file with USB driver.

The steps of flashing image file:

• Copy image file from USB to our board userdata partition or sd card.
• Reboot and enter recovery mode
• Flash itself with image file
• Reboot and enter normal mode

Thanks.

Hi,

Another question, I can't type and execute command on recovery mode.

Is it a default configuration for recovery mode?

Is it possible to do that on recovery mode?

Hi Ken,

it's normally possible to use sd card to update board or with adb with adb sideload command.
i willl provide you some instructions soon.

To interact in recovery mode you need to use your input device (keyboard, touch , mouse) For me i have a screen with touchscreen on usb and so i can scroll and to validate command i need to do a long press 


When you talk about a default configuration in recovery mode, can you be more specific ? 
you want to go in recovery and automatically launch update or omething like that ?

Guillaume

Hi Guillaume,

For me i have a screen with touchscreen on usb and so i can scroll and to validate command i need to do a long press

  => It works for me.

Actually, we want to implement a system upgrade function for our new board.

Users only need to press an button to finish the system update without any other operation.

The am62x android aosp supports the A/B system update. Is there a detailed introduction to this feature on the TI website?

Could you provide the "update.zip" file used for updating in recovery mode?

Thanks

i can provide update.zip but it's better for you to generate it yourself ,

i will create a hwoto today and shared it.

Hi,

I generated update.zip with the below link

https://source.android.com/docs/core/ota/tools?hl=zh-cn

I executed below command.

#cd ${YOUR_PATH}/ti-aosp-12/

#mkdir dist_output

#make dist DIST_DIR=dist_output

#ota_from_target_files dist_output/am62x-ota-eng.root.zip ota_update.zip

But there was an error during the execution of the command.

Is it a normal way to generate ota update.zip?

Hi,

Do you have any further information?

Thanks.

Hi,
this warning is normal and not a problem .

normally at the end you have your ota package

for local update i do test with adb sideload and it's working.

i do this command :

source build/envsetup.sh
lunch am62x-userdebug
mkdir dist_output
make dist DIST_DIR=dist_output

Hi,

I generate ota_package.zip by your command.

Does the filesystem of the ota_package.zip is correct?

And I executed below command for updating android firmware

update_engine_client --payload=file:///storage/AD29-FF8E/Download/payload.bin --update --headers="FILE_HASH=8XxPNCkV6q+RVhK4iuTgHoWOB212D/Sy6/huFQllj3w=
FILE_SIZE=553097142
METADATA_HASH=ws1LVWlzMhe29R1aga0cYLWon4zkynBgluiqqiucA8U=
METADATA_SIZE=39999"

It always stuck and reboot when boot from slot b.

Does the problem is same as your description "Same from sdcard not working and i will debug it." ?

Thanks.

not same issue.

problem with sd card is link to no auto mount in recovery mode so android recovery dont find image for update.

End of day for me i will try to reproduce your issue tomorrow 

Hi, 

Could you reproduce my problem?

I compared the logs between a normal boot and an abnormal boot, and it seems that there is an issue when executing snapuserd.

Does this relate to the issue?

Hi Ken,

Per my understanding, you want to be able to apply a full OTA update using the A/B scheme. The update will be on the board's eMMC.
This can be done with the SystemUpdaterSample app with the following steps:

1. Build the ota files

$ source build/envsetup.sh
$ lunch am62x-userdebug
$ export OUT_DIR=~/linux-data/work/ti/out/ti-android-12
$ export DIST_DIR=$OUT_DIR/dist_output
$ m
$ m dist

2. Update the ota config file. Feel free to change $OUT_DIR and $DIST_DIR to match your developer environment.

$ source build/envsetup.sh
$ lunch am62x-userdebug
$ export OUT_DIR=~/linux-data/work/ti/out/ti-android-12
$ export DIST_DIR=$OUT_DIR/dist_output
$ PYTHONPATH=$ANDROID_BUILD_TOP/build/make/tools/releasetools:$PYTHONPATH bootable/recovery/updater_sample/tools/gen_update_config.py --ab_install NON_STREAMING $DIST_DIR/am62x-ota-eng.${USER}.zip $DIST_DIR/am62x-ota-eng.${USER}.json file:///data/user/0/com.example.android.systemupdatersample/files/packages/am62x-ota-eng.${USER}.zip

(be careful, last line is one very long line)


3. Run the SystemUpdaterSample app once:

$ adb root
$ adb shell setenforce 0
$ adb shell am start com.example.android.systemupdatersample/com.example.android.systemupdatersample.ui.MainActivity

4. Push the files on the board:

$ adb root
$ adb shell mkdir /data/user/0/com.example.android.systemupdatersample/files/configs
$ adb shell mkdir /data/user/0/com.example.android.systemupdatersample/files/packages
$ adb push $DIST_DIR/am62x-ota-eng.${USER}.json /data/user/0/com.example.android.systemupdatersample/files/configs/
$ adb push $DIST_DIR/am62x-ota-eng.${USER}.zip /data/user/0/com.example.android.systemupdatersample/files/packages/

5. Change SELinux Label:

$ adb shell chcon -R u:object_r:ota_package_file:s0 /data/user/0/com.example.android.systemupdatersample/

6. Change Unix permisssions:

$ adb shell chmod -R 777 /data/user/0/com.example.android.systemupdatersample/

7. Run the update on the UI:
- Tap on RELOAD to load the config
- Tap on APPLY to apply the OTA
- Tap OK to confirm application
- Wait for progress bar to complete
- Tap on SWITCH SLOT to finish update (scroll downwards to see the button)
- Wait for verification

8. Reboot the device with:

$ adb shell svc power reboot

A/B cmdline addition: androidboot.slot_suffix=_b                                                                                                                                                                      

In parallel, we are looking into snapuserd

Hi,

We will develop an application on our new board and implement a system update function within this application.

Therefore, it is necessary to program the system update functionality without requiring user operation.

I made ota package file reference from https://source.android.com/docs/core/ota/tools and  executed the command "update_engine_client" to do system update.

Do you think these operations are applicable to AM62x Android?

Could you do these operations provided in the past post?

I still want to confirm what issue I encountered.

I will try to execute the example operations you provided.

But I need to do that programmatically finally.

Thanks

Hi,

The solution works for me.

Thanks for your help.