mirror of
https://github.com/openglow-org/forgefirm.git
synced 2026-09-28 01:01:12 -07:00
ScottW514
f396dbde34
temp_calibrate now cross-checks the factory B-equation instead of the retired linear guess.
82 lines
2.6 KiB
Markdown
82 lines
2.6 KiB
Markdown
# Build
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ForgeFIRM is built with [**kas**](https://kas.readthedocs.io/), which manages
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the Yocto layers and pins their versions. The **forgefirm** repo is the base
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of the build.
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Builds run on a Linux host, or on **WSL2** (officially supported by Yocto —
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keep the tree on the native ext4 filesystem, not `/mnt/c`).
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## Host setup
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On Ubuntu/Debian (including WSL2), install the Yocto host packages and kas:
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```console
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sudo apt-get install -y gawk wget git diffstat unzip texinfo gcc build-essential \
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chrpath socat cpio python3 python3-pip python3-pexpect xz-utils debianutils \
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iputils-ping python3-git python3-jinja2 python3-subunit zstd liblz4-tool file \
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locales libacl1 lz4 rsync
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sudo locale-gen en_US.UTF-8
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pipx install kas # use pipx — Ubuntu 24.04 (PEP 668) blocks `pip install --user`
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```
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For other distros, see the
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[Yocto Project Quick Build](https://docs.yoctoproject.org/brief-yoctoprojectqs/index.html).
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Do not build as root (the Yocto sanity checks refuse it).
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## Get the sources
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Clone the repos as siblings (the kas config references `meta-openglow` at
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`../meta-openglow` while it is under active Scarthgap migration):
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```console
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git clone https://github.com/ScottW514/forgefirm.git
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git clone https://github.com/ScottW514/meta-openglow.git
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git clone https://github.com/ScottW514/kernel-module-glowforge.git
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```
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```
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openglow-forgefirm/
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├── forgefirm/ ← base repo, build runs here
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├── meta-openglow/
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└── kernel-module-glowforge/
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```
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## Build the image
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```console
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cd forgefirm
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kas build kas/forgefirm-glowforge.yml
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```
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kas fetches the upstream layers into `forgefirm/layers/`, builds in
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`forgefirm/build/`, and produces the bootable image at:
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```
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forgefirm/build/tmp/deploy/images/glowforge/forgefirm-image-glowforge.rootfs.wic.gz
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```
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(The `u-boot-glowforge.imx` also deployed there is **reference-only**: every
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supported install/boot flow keeps the factory bootloader on the eMMC. Its env
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Kconfig now matches the factory layout — 0x80000 primary / 0x82000 redundant —
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but it is not wired into any install path and flashing it is unsupported.)
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For exact, reproducible layer versions, generate a lockfile once:
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```console
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kas lock kas/forgefirm-glowforge.yml
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```
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See [`kas/README.md`](kas/README.md) for details, the container-build option,
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and the Scarthgap migration backlog.
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## Write to an SD card
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```console
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cd build/tmp/deploy/images/glowforge
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sudo zcat forgefirm-image-glowforge.rootfs.wic.gz | dd of=/dev/sdX bs=1M
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```
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To install onto the factory eMMC (dual-boot with the Glowforge firmware), see
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[`INSTALL.md`](INSTALL.md).
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