nokia-ant: new port

The device boots, requires manual boot.img adjustments, and being connected to USB, as it shutdowns otherwise (battery not detected)

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• 820538b9 - initial nokia-ant porting effort

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changed title from Draft: initial nokia-ant porting effort to Draft: nokia-ant: new port

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Kernel builds, but pmbootstrap install fails with hard to analyze error log.txt

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• 62dcae85 - nokia-ant: new device

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Fix: Kernel defconfig posted by Nokia had CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE flag set, and no .dtb file was produced. The boot.img taken from the phone's dump on the other hand uses separate .dtb file. For now I've disabled the CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE flag and enabled .dtb file generation, but I might need to enable both.

I was able to fix compilation issues and now pmbootstrap install works. After flashing system and kernel the phone bootloops, so something is still broken, but I can safely reflash Android boot.img if necessary

I'll have more issues with the device than I thought. After taking working Android boot.img and removing AVB data from the end the device no longer boots. https://wiki.postmarketos.org/wiki/Android_Verified_Boot_(AVB) says that vbmeta partition needs to be flashed, but this device doesn't have this partition, or at least that's what fastboot and mtkclient tools are saying. I'd need to get original boot.img without the AVB info to boot, and then I can continue with the port :/

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resolved all threads

marked this merge request as ready

Flashing boot has to be done manualy (avbtool add_hash_footer is required, see https://wiki.postmarketos.org/wiki/HMD_Global_Nokia_1_Plus_(nokia-ant)#Using_pmbootstrap), but other than that it boots

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approved this merge request

Except the one small nitpick and the question on modules, this looks good to me

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Main issue I have right now is that this device can't be flashed with pmbootstrap flasher flash_kernel, because boot partition needs to have AVB footer (see https://wiki.postmarketos.org/wiki/HMD_Global_Nokia_1_Plus_(nokia-ant)#Using_pmbootstrap ), and I don't know if it is possible to modify generated boot.img before flashing it

approved this merge request

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• ca34371a - add msm-fb-refresher

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added msm-fb-refresher, XFCE4 had issues with displaying anything otherwise

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• 20f93bfd - generate boot.igm with AVB footer

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resolved all threads

I think this PR is ready, at least as far as initial device support goes:

• nokia-ant packages can be built
• rootfs and boot partitions can be flashed with pmbootstrap (boot required avb footer data)
• XFCE4 works
• USB networking works, can ssh into the machine

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added porting label

LGTM!

Would be good to squash the commits, but this could also happen during merge

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• 70e8d1af - nokia-ant: new device (MR 6134)

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enabled an automatic merge when all merge checks for 70e8d1af pass

merged