linaro-swg/optee_android_manifest

Right branch to use with HiKey960

Closed this issue · 12 comments

elkoniu commented

Hi all,
What branch I should use for HiKey960? lcr-ref-hikey?
If yes then I expect that for flashing I should use binaries from hikey960 directories rather than hikey ?
cp -a out/target/product/hikey960/*.img device/linaro/hikey/installer/hikey960/
sudo` ./device/linaro/hikey/installer/hikey960/flash-all.sh /dev/ttyUSBn

vchong commented

There are no branches for hikey960. It's not supported atm.

elkoniu commented

It is not supported by optee_android_manifest tools or not supported by AOSP + OP-TEE on it?

vchong commented

Not supported by optee_android_manifest. There is AOSP build for HiKey960 upstream, but it is without OP-TEE. There is no support for AOSP + OP-TEE for HiKey960 atm.

elkoniu commented

Are you sure abot that? Because HiKey960 is supported by both OP-TEE and AOSP upstream separated. Then why is not supported by them combined together? It is not just the matter of putting right partitions on device and flash with images combined from upstream OP-TEE for HiKey960 and AOSP for HiKey960?

vchong commented

Yes I'm sure. The job of 'combining them together' is not so straightforward. There are many parts that need to be integrated separately. You can get an idea of what it takes to do that for the hikey620 here[1]. It's not done yet for the hikey960, and no plans to do that atm due to lack of resources.

[1] https://www.slideshare.net/linaroorg/hkg18119-overview-of-integrating-optee-into-hikey620-aosp

Edit: Please note that the slides might already be somewhat outdated!

elkoniu commented

I see now what the problem is.
Let me ask then my final two questions:

  1. If it is possible to use builds from HiKey on HiKey960? Or the difference between them is too big?
  2. If not HiKey960, then what is the "freshest" development device for OP-TEE + AOSP? Raspberry Pi 3 maybe (it is also on OP-TEE support list)?
vchong commented

  1. We tried to do it here (https://discuss.96boards.org/t/optee-android-in-hikey960), but it's too complicated and ugly and hard to use and error prone and many other negatives.

  2. Being on the OP-TEE support list doesn't mean there's an AOSP + OP-TEE build. The best support for AOSP + OP-TEE right now is probably hikey620.

elkoniu commented

@vchong Thanks for answers and suggestion which board use.
I found a post where it looks like someone managed to put some things together and make it working: https://discuss.96boards.org/t/remote-no-such-partition-after-flashing/4120

vchong commented

You're welcome, but not sure what you mean. The post you found is just regular hikey960 aosp without op-tee as far as i can tell.

elkoniu commented

True, my mistake. One more time thank you for help! :)

vchong commented

One of our community users, @BenSup, has kindly shared his implementations here: https://github.com/bsupiot/hikey960-aosp-optee/wiki. For those who are interested, please give it a try. There are some known issues so please contribute back patches if possible. A big thank you to @BenSup! Thanks!

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vchong commented

@elkoniu You can try hikey960 build on https://github.com/linaro-swg/optee_android_manifest now.

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