64 lines
2.2 KiB
Markdown
64 lines
2.2 KiB
Markdown
# Building a Mobian Image for the Pixel 3a
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## Prerequisites
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Cloning the repositories
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Kernel: https://salsa.debian.org/erebion/sdm-670-linux
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Mobian Recipes does not have the changes merged, as the kernel is not yet part of Mobian: https://salsa.debian.org/Mobian-team/mobian-recipes/-/merge_requests/113
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Take my temporary fork of Mobian Recipes instead, for now: https://salsa.debian.org/erebion/mobian-recipes/-/tree/erebion/sargo-build?ref_type=heads
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Make sure you check out my branch `sargo-build` which includes a couple of workarounds for changes which are not yet in the repos, but will be soon.
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The fork will be maintained until there are official Mobian images for the Pixel 3a.
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## Compiling the Kernel
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First `cd` to the kernel repo.
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Then:
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```bash
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gbp pq import # import the patches to a patch-queue branch with the patches applied
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DEB_HOST_ARCH=arm64 dpkg-buildpackage -a arm64 -us -uc -rfakeroot -b -Pcross,nocheck
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```
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## Building the Image
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- First `cd` to the Mobian repo
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- Copy the kernel deb to `devices/qcom/packages`, so that it gets installed onta the image we are about to build.
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- Add your SSH authorized keys file to `overlays/ssh/authorized_keys`, important so you can log in later
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- Make sure the internet connection is stable, as the build fails if it cannot download all packages successfully.
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Now build the image:
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```bash
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./build.sh -t qcom -s -u mobian -c -R myverysecretlukspassphrase | tee mobian-build.log # -s for SSH, which we need later
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```
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Do not use `myverysecretlukspassphrase` as your passphrase and replace it, obviously. :D
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(If you replace `mobian` with your own username, you will have to use that one for SSH later, of course)
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Wait. It takes a while.
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Note: Your SSH Host Keys seemingly get generated while building the image, please don't give your image to anyone else.
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To Do: Verify whether those keys really end up in the image.
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## Flash to device:
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```
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fastboot --set-active --slot a
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fastboot flash boot_a mobian-qcom-phosh-20240614.boot-sargo.img
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fastboot flash userdata mobian-qcom-phosh-20240614.rootfs.img
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fastboot erase dtbo
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```
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Boot up the device. Connect it via USB.
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## Temporary manual changes
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The steps are documented in `README.md` in this repo.
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