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v3.0.1

Revert the rootfs-level zram activation from v3.0.0 in on-start.sh.

  • The zram0 disksize/comp_algorithm/mkswap/swapon block is removed; the kernel/busybox support (shipped v2.1.0) stays. Sizing, compression algorithm, and swapon priority are workload-specific, so activation is left to the consuming application. This restores the v2.1.0 boundary that v3.0.0 stepped past.
  • oom_score_adj = -500 for init/BEAM is unchanged.

v3.0.0

Switch the application data partition from ext4 to F2FS (both SD and eMMC targets). F2FS is log-structured and flash-friendly — better suited to the write-heavy, frequent-power-loss NVR workload.

  • Kernel: CONFIG_F2FS_FS=y (+ _STAT_FS, _FS_XATTR, _FS_POSIX_ACL).
  • Buildroot: BR2_PACKAGE_F2FS_TOOLS=y (mkfs.f2fs, fsck.f2fs, resize.f2fs) on both defconfigs.
  • NERVES_FW_APPLICATION_PART0_FSTYPE → "f2fs" (drives the on-device mkfs.f2fs performed by nerves_runtime on first boot); erlinit mounts p4 as f2fs with fsync_mode=strict.

BREAKING — data loss on upgrade: there is no in-place ext4→F2FS conversion. On the first boot after this update the data partition fails to mount as F2FS and is reformatted, erasing all application data (sqlite, recorded segments) and on-partition provisioning. Back the data up off-device first if it must be preserved. New/factory units are unaffected.

fwup still does not format the data partition (raw_memset blanks the first 128 KiB / superblock); factory-reset (fwup-ops) is unchanged.

Note: degrade-to-read-only + fsck on mount failure (instead of the default reformat-on-failure) requires a custom :nerves_runtime, :init_module in the consuming application.

Activate zram swap and bias the OOM killer, in on-start.sh (rootfs):

  • Compressed swap (zram, lz4, disksize = 75% of RAM, swapon -p 100) is now set up at boot to absorb transient memory spikes on the ~177 MiB device. Best-effort — a no-op if the kernel lacks zram, and it never blocks boot.
  • Init/BEAM oom_score_adj set to -500 so the kernel prefers other victims before killing the VM.

This supersedes the v2.1.0 note that deferred zram device setup to the consuming application: the kernel/busybox support shipped in v2.1.0, the rootfs activation ships here.

v2.1.0

Enable swap and zram in the kernel (both SD and eMMC targets):

  • CONFIG_SWAP=y, CONFIG_ZRAM=y, CONFIG_ZSMALLOC=y (5.10 zram depends on it, no auto-select), CONFIG_CRYPTO_LZO=y, CONFIG_CRYPTO_LZ4=y.
  • BusyBox: swapon -p priority flag (CONFIG_FEATURE_SWAPON_PRI=y); mkswap/swapon/swapoff were already enabled.

No init/rootfs changes — zram device setup (disksize, mkswap, swapon, vm.swappiness) is left to the consuming application.

v2.0.0

Expanded the A/B partition layout for the 8 GB minimum target media:

  • Rootfs A/B slots grown from 256 MiB to 1.5 GiB (room for ML models in the firmware image).
  • Data partition minimum raised to 1 GiB (still expands to fill the card).

Breaking: existing devices require a factory reflash — OTA from the old layout cannot re-partition.

v1.7.0

Added sound utilities to use the mic.

v1.6.4

Fix eMMC erlinit.config always using SD device paths (mmcblk1 instead of mmcblk0). Moved erlinit.config out of rootfs_overlay/ into variant-specific overlays (rootfs_overlay_sd/, rootfs_overlay_emmc/) so that Nerves.Erlinit.system_config_file/1 no longer overwrites the correct Buildroot-applied config during mix firmware.

v1.6.3

Rename rootfs overlay directories from kebab-case to snake_case so Nerves.Erlinit.system_config_file/1 finds erlinit.config and merges :nerves, :erlinit config from consuming projects.

v1.6.2

Fix for version 1.6.1 (emmc target always selected)

v1.6.1

Minor fix.

v1.6.0

Publishing the emmc variant as its own target.

v1.5.2

Fix on CI when uploading eMMC image.

v1.5.1

Removing : from the device ID.

v1.5.0

Creating eMMC image

v1.4.0

Bumped version because of the change.

v1.3.7

Added the libs necessary for using Image lib in the system.

v1.3.6

Fix when switching between A/B partitions.

v1.3.5

Added common USB serial device drivers.

v1.3.4

Added librstp.

v1.3.3

Re-organizing project files to make more sense and not reference LicheerV.

v1.3.2

Triggering a re-build.

v1.3.1

Updated mix dependencies.

v1.3.0

Bumped ION memory from 20mb to 64mb.

v1.2.0

Updated sscma-elixir to the latest version.

v1.1.0

Notable changes:

  • Better demo (showing squares where people are detected)
  • Using the same camera size as the TPU is using
  • Added support for USB dual role
  • Added driver for CP210X

v1.0.0

First fully working version with all the bell and whistles working.

Demo included in the example folder.

v0.18.1

Correctly publishing sscma-elixir program in the image and added NixOS support.

v0.18.0

Added sscma-elixir program.

v0.17.1

Updated CI and using docker builder.

v0.17.0

Finally, a working camera!

Additionally, we have networking over USB.

Still missing / untested:

  • Loading models to the TPU.

v0.16.0

First boot-to-nerves version!

Working:

  • Boots up to iex
  • Loads & stores data in u-boot
  • Has A/B partitions (untested yet)
  • Ethernet driver, WiFi driver
  • Most features are already working

Non-working / Untested:

  • TPU driver
  • Camera

v0.15.0

Added the example folder.

v0.14.0

Updated version so it matches the current version

v0.0.1

First release

First release! Still early, and might not work at all.