May 2022 - automotive-sig - lists.centos.org

Weekly update on the automotive-sig
by Pierre-Yves Chibon 23 May '22

23 May '22

Good Morning Everyone, So here are some of the changes that we have worked on week: * Android devices vs chips shortage It is possible today to create Linux chroot on Android devices. With the chips shortage going on world wide, getting even a raspberry pi is problematic or expensive, there are, however, other aarch64 devices that could be used, some that have less shortage issues: android device. We are therefore looking at what it would take to do native builds insite a linux chroot running in an android device. So if that interests you, stay tune! Happy hacking! Pierre

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Weekly update on the automotive-sig
by Pierre-Yves Chibon 13 May '22

13 May '22

Good Morning Everyone, So here are some of the changes that we have worked on this week: * Raspberry pi as an USB gadget on Windows: An USB gadget is a mechanism by which one can interact with a device connected over USB as if it was a device connected on the network. Last week we work on enabling this and documenting it for Linux, this week we have made it work with Windows. Our documentation has been updated for this, you can see it at: https://sigs.centos.org/automotive/building/gadget/#set-up-networking-on-a-… Happy hacking! Pierre

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Weekly update on the automotive-sig
by Pierre-Yves Chibon 06 May '22

06 May '22

Good Morning Everyone, So here are some of the changes that we have worked on this week: * Automatic resize of the '/' partition on raspberry pi Last week we worked on documenting how to resize the '/' partition after flashing an image onto a SD card for a raspberry pi. This week we worked on automatizing this. There is now a `pi_resize` RPM package, included by default on all of our raspberry pi images that will automatically resize the `/` partition to the full size of the SD card upon first boot (and will only do it once). Let us know if it doesn't work for you! * Encrypted images We have work on documentation on how to build images encrypted with luks. You can find it at: https://sigs.centos.org/automotive/building/encryption/ * Reducing linux-firwmare The linux-firmware package is a pretty big package containing binary firmware blob for a number of systems and cards, many more systems than those relevant for the automotive industry. We have thus split out some of the firmware from the linux-firmware package into a custom, smaller, `linux-firmware-automotive` package. Our images now use that package by default, however, if you want/need to use the full linux-firmware package, you can use the `linux_firmware_rpm` template variable to change the package name. * Raspberry pi as an USB gadget: An USB gadget is a mechanism by which one can interact with a device connected over USB as if it was a device connected on the network. To achieve this and make it convenient, we have adjusted the kernel-automotive configuration [1] to support the `libcomposite` module. We have also introduced a `pi_gadget` RPM package, which is available in the Automotive SIG's RPM repository. That package provides a script and a systemd service to automatically turn your raspberry pi into an USB gadget. If you are curious about the experience, feel free to look at our documentation at: https://sigs.centos.org/automotive/building/gadget/ and do let us know if you run into any troubles! Happy hacking! Pierre [1] https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_…

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CentOS Auto SIG Meeting this week
by Jeffrey Osier-Mixon 03 May '22

03 May '22

Hi all - this is a reminder of the monthly CentOS Automotive SIG meeting this week on Wednesday, May 4, at 1000 EDT / 1600 CET. The meeting will be held online at https://meet.google.com/hkx-btgd-dyc Please drop me a note if you would like to be added to the Google invite, but the invitation is not required in order to attend - all are welcome. Draft agenda: - introduction & action items - technical updates: AutoSD, documentation, GitLab namespace, sample images - Q & A Jeffrey "Jefro" Osier-Mixon | jefro(a)redhat.com Red Hat Office of the CTO | Sr. Principal Community Architect, Automotive

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Weekly update on the automotive-sig
by Pierre-Yves Chibon 02 May '22

02 May '22

Good Morning Everyone, So here are some of the changes that we have worked on last week: * Resizing the '/' partition: After flashing an image onto a SD card, by default the '/' isn't extended to the full size of the disk. The documentation at: https://sigs.centos.org/automotive/building/resize_partition/ provides instructions on how one can resize that partition to make use of the entire size of their SD card. * It is now possible to build external image manifest with the sample-image repo If you run make with the IMAGEDIR=/path/to/manifest/dir then the makefile will automatically pick up any manifest files there and build them just like the regular sample manifests. This makes it easier to maintain and experiment with your own manifests ouside of the repo. * All manifests now enable EFI runtime services The realtime kernel normally disables EFI runtime services because the kernel cannot make realtime guarantees about all possible EFI firmwares. However, supporting EFI is important, so the manifest now default to passing efi=runtime on the kernel commandline to enable this. * Ability to add custom prefixes to image builds If you prepend `@something` to the build target, like so: $ make cs9-qemu-minimal-ostree(a)sometag.x86_64.qcow2 That will be picked up as the resulting filename of the build, although the build is not affected in other ways. This is useful if you want to build a modified image, for example adding some rpms, and want to distinguish the resultant build from unmodified ones. * Lookaside cache structure on CentOS The work we have done to allow a structure in CentOS' lookaside cache which does not rely on a git branching structure as been announced on the centos-devel mailing list: https://lists.centos.org/pipermail/centos-devel/2022-April/120351.html Happy hacking! Pierre

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automotive-sig May 2022