Retrofit same example in AOSP10

[Nishal]

Hi,

I wanted to understand the concept of retrofit update. And I found that NXP supported retrofit in AOSP_10.0.0_1.0.0 to AOSP_10.0.0_2.0.0 and above.

I have IMX8QXP MEK hardware(revB)

1. Have flashed 10.0.0_1.0.0 demo image (https://www.nxp.com/webapp/Download?colCode=Q10.0.0_1.0.0_DEMO_8Q&appType=license) which doesnt have dynamic partition enabled: Boot successful

2. Also tried flashing 10.0.0_2.0.0 demo image (https://www.nxp.com/webapp/Download?colCode=Q10.0.0_2.0.0_DEMO_8Q&appType=license) which has dynamic partition: Boot successful

Checking the sorurce code, found this sample demo

https://github.com/nxp-imx-android/android-imx_device_fsl/blob/android-10.0.0_2.0.0/imx8q/mek_8q/mek...

Generated an image with this flag enabled. But facing issue in booting the device with local image. Is there anything missed?

* Complete flashed unit not booting (using uuu method), fails to boot android

[ 7.164160] Run /init as init process
[ 7.217886] init: init first stage started!
[ 7.222569] init: Switching root to '/first_stage_ramdisk'
[ 7.231936] init: Using Android DT directory /proc/device-tree/firmware/android/
[ 7.435558] init: bool android::init::FirstStageMount::InitRequiredDevices(): partition(s) not found in /sys, waiting for their uevent(s): system_a
[ 17.459357] init: Wait for partitions returned after 10010ms
[ 17.465098] init: bool android::init::FirstStageMount::InitRequiredDevices(): partition(s) not found after polling timeout: system_a
[ 17.477960] init: Failed to mount required partitions early ...
[ 17.489860] init: #00 pc 00000000000675cc /system/bin/init
[ 17.495506] init: #01 pc 0000000000093094 /system/bin/init
[ 17.501145] init: #02 pc 000000000000c650 /system/lib64/libbase.so
[ 17.507456] init: #03 pc 000000000003ef6c /system/bin/init
[ 17.513112] init: #04 pc 00000000000230f4 /system/bin/init
[ 17.518731] init: #05 pc 000000000007d844 /system/lib64/libc.so
[ 17.524796] init: Reboot ending, jumping to kernel
[ 17.529778] cfg80211: failed to load regulatory.db

* If I try to do OTA retrofit update from demo_imag_10.0.0_1.0.0 to locally built retrofit.zip, device fails to boot kernel, stops at this log

Starting kernel ...

Any pointers will be helpful.

Thanks in advance

[Sanket_Parekh]

Hello @Nishal 

I hope you are doing well.

->As the link you provided describes If the device is retrofitted to have a dynamic partition feature, set this variable to true to build the images and OTA package. Here is a demo to update 10.0.0_1.0.0 to 10.0.0_2.0.0 or higher.

It means 10.0.0._1.0.0 which does support the dynamic partition feature so one has to use the 10.0.0._2.0.0 version where one has to enable the macro

TARGET_USE_DYNAMIC_PARTITIONS ?= true
TARGET_USE_RETROFIT_DYNAMIC_PARTITION ?= true

Please refer to this link to get more details on SWUpdate OTA i.MX8QXP MEK
https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/SWUpdate-OTA-i-MX8MM-EVK-i-MX8QXP-MEK/ta...

Thanks & Regards,

Sanket Parekh

[Nishal]

Hi @Sanket_Parekh ,

Thanks for your reply.

As mentioned in your reply, I already have these enabled

TARGET_USE_DYNAMIC_PARTITIONS ?= true
TARGET_USE_RETROFIT_DYNAMIC_PARTITION ?= true

Initially, even this was failing. The reason for this difference in boot partition size. So I had to additionally make these changes on AOSP10.0.0_2.0.0

In device/fsl/common/partition/device-partitions-28GB-ab_super.bpt, (for boot partition, reduce size to 48M)

         {
             "ab": true,
             "label": "boot",
-            "size": "64 MiB",
+            "size": "48 MiB",
             "guid": "auto",
             "type_guid": "bb499290-b57e-49f6-bf41-190386693794"
         },

In device/fsl/imx8q/BoardConfigCommon.mk

@@ -143,7 +143,7 @@ BOARD_USES_RECOVERY_AS_BOOT := true
TARGET_RECOVERY_PIXEL_FORMAT := "RGBX_8888"

BOARD_DTBOIMG_PARTITION_SIZE := 4194304
-BOARD_BOOTIMAGE_PARTITION_SIZE := 67108864
+BOARD_BOOTIMAGE_PARTITION_SIZE := 50331648 #48M

But after this change, device is not booting android with logs as shared earlier.

If there any prebuilt retrofit OTA image tested earlier/or demos, please share with us so that we can check with the same image as well.

Any pointers will be very helpful.

Thanks!

[Sanket_Parekh]

Hello @Nishal 

I hope you are doing well.

->I have shared a Document provided by the NXP link below Down.
->Please refer to Section 4 System Upgrade (OTA) Customization
https://community.nxp.com/pwmxy87654/attachments/pwmxy87654/imx-processors/75536/2/13.5.0_Android_Ad...

It will be helpful!

Thanks & Regards,

Sanket Parekh

[Nishal]

Hi @Sanket_Parekh ,

Thanks for your reply.

I have checked the documents. Seems like it is specific for AOSP13, and also it doesnt have any details related to retrofit update.

While I am still trying to get the details for retrofit demo details AOSP10_2.0.0, we have tried few experiments and want to update on that

1. Device boots successfully when we flash using uuu, but with retrofit disabled

TARGET_USE_DYNAMIC_PARTITIONS ?= true
TARGET_USE_RETROFIT_DYNAMIC_PARTITION ?= false

2. Device stops to boot android (at firststagemount if we have following options enabled

TARGET_USE_DYNAMIC_PARTITIONS ?= true
TARGET_USE_RETROFIT_DYNAMIC_PARTITION ?= true

3. Now we have generated the OTA package with enabled TARGET_USE_RETROFIT_DYNAMIC_PARTITION := true

$ ./imx-make.sh bootloader kernel -j4
$ make target-files-package -j4

$ make otapackage -j4

With time device fails to load kernel.

4. Since bootloader/u-boot was not getting updated, we suspected uboot issue and used fastboot to update the bootloader as well. So kernel started booting but get stuck at this log

[ 0.032633] SELinux: Initializing.
[ 0.036154] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 0.043477] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 0.075382] ASID allocator initialised with 32768 entries
[ 0.088481] rcu: Hierarchical SRCU implementation.
[ 0.103637] EFI services will not be available.
[ 0.115897] smp: Bringing up secondary CPUs ...

Any pointers will be helpful, 

Thanks & Regards,

Nishal

[Sanket_Parekh]

Hello @Nishal 

I hope you are doing well.

I checked the steps, Thanks for the details.
Can you share more dmesg logs to debug it further?

Thanks & Regards,

Sanket Parekh

[Nishal]

Hi @Sanket_Parekh ,

Please find attached logfile.

In this logfile

1. we have flashed demo_image aosp10_1.0.0
2. updated the bootloader using fastboot (bootloader is locally built from aosp10_2.0.0 source code)
3. Then did OTA retrofit update (retrofit-eng-ota.zip file)
4. Then reboot the system, system stops at kernel

Thanks in advance!

[Sanket_Parekh]

Hello @Nishal 

I hope you are doing well.

I have shared a link, This doc explains the OTA procedure in detail.
Please refer to Section 7 OTA updates.
It will help you!

https://www.nxp.com/docs/en/user-guide/ANDROID_USERS_GUIDE.pdf

Thanks & Regards,

Sanket Parekh