Linux/DRA752: Does you know how to update filesystem after LInux kernel boot up?

Tao Han

Expert 6645 points

Part Number: DRA752
Other Parts Discussed in Thread: DRA756

Tool/software: Linux

Hi Expert:

Customer use DRA756 + 6AL.1.2 android release. At factory they can use SD card + USB fastboot mode flash image to eMMC.

Now they want to on-line upgrade Android filesystem. Such us update system.img through ethernet.

We have try to read the eMMC block partion table at uboot mode. When Kernel start up, we download system.img to eMMC special partion.

Then us DD command read system.img write to uboot list system.img block.

When we finnish DD command and reboot the board, Andorid can not successful boot up.

Does we have some suggest about those kind of on-line upgrade filesystem image method?

Best Regards!

Han Tao

over 8 years ago

0 Yordan Kamenov over 8 years ago

TI__Mastermind 42515 points

Hi,

I have forwarded your question to an expert.

Regards,
Yordan

0 Vishal Mahaveer over 8 years ago

TI__Mastermind 33420 points

Hi Tao Han,

Need more info on what is failing in Android boot. Do you have logcat info?
Also, is the new system.img verified to be a working one. By flashing it through regular fastboot method.

We don't test OTA on our SDK, usually OEM implements that.
Android guideline here - source.android.com/.../

Regards,
Vishal

0 chad ru over 8 years ago in reply to Vishal Mahaveer

Prodigy 20 points

hi Vishal Mahaveer：
we want upgrade system.img to system partitions by boot recovery ramdisk. we receive system.img from ethernet, and in recovery ramdisk ,we use dd command to write it to system partitions:system -> /dev/block/mmcblk0p9, but after repower on chips can't work. I think , maybe fastboot add some characters to system.img when normal fastbooting. could you tell me some about fastboot handle? thank you!

0 Vishal Mahaveer over 8 years ago in reply to chad ru

TI__Mastermind 33420 points

Hi Chad,

I don't think fastboot does anything special to write system.img.

Could you check if the system.img you received over Ethernet is not corrupted?
Also, could you give more details on what fails? Is Android able to mount System partition?

Regards,
Vishal

0 chad ru over 8 years ago in reply to Vishal Mahaveer

Prodigy 20 points

hi Vishal Mahaveer, Tao Han:
yes, fastboot not do anything special to write system.img. now we have resolve the problem, becase some lenth is wrong.

thank you!

Regards,
Vishal

0 Yordan Kamenov over 8 years ago in reply to chad ru

TI__Mastermind 42515 points

Hi,

thanks for updating the status of the thread. I will close it, but you can write here and reopen it if you face an issue.

Regards,
Yordan

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Linux/DRA752: Does you know how to update filesystem after LInux kernel boot up?