Daily shell image build — 3f397a6

This is the original build-host record. The image was subsequently deployed; launcher evidence records its fresh boot and application checks.

Source and command

• Source: 3f397a66f6e5cfeedbc13d49b289e574157ce962 (3f397a6, detached clean worktree).
• Command: nix build .#sdImage --out-link resultdaily --option substituters https://cache.nixos.org/ --option max-jobs 1 --option cores 8 --print-build-logs.
• Result: exit status 0. Nix reported 22 derivations built. The foreground build session took about 82 seconds.

Output

• Image: /nix/store/x0qz7ibmyb1bbmx1cpwgryxapkzisb0m-k230-sd-image.img
• Image size: 2308689920 bytes.
• Full SHA-256: 797d3fdf1e9901c6cf5d219a75c902e0cae12b951c9582514042535837d4b0a6.
• Toplevel: /nix/store/mp5llx58dcpnikfdwn455pyrygdvggbg-nixos-system-nixos-26.11.20260919.20b1ddd.
• Closure of the image output, including the image file: 3590915736 bytes.
• System toplevel closure: 1280743192 bytes (nix path-info -S), separate from the image-output closure above.

The generated MBR has a 112 MiB boot partition at sectors 8192..237567 and the root partition at sectors 262144..4507111. Extracting the boot partition and listing it with read-only debugfs found Image, initrd.uimg, the DTB, and OpenSBI, and found no logo.xrgb. This matches the daily panelConsole = true no-logo workaround; it is not a display claim.

Stage 1 and handoff ABI

• Stage 1: /nix/store/r7lvl2ddpm86p8cly5gcrnil58biyzsa-k230-stage1.
• fn_u-boot-spl.bin: fe3d537f62c34a3d01127c58fef4caec50f0e65b0192670712ecb1599584a954.
• fn_ug_u-boot.bin: e0b5787f3e68267f997ca61d45afaf8945e6fe9be775cc6165f981978cf3f1bb.
• env.env: cf108755a3cf3a8070a2f0ded84af672108e2301dfd58e5c2aa6a7555dbbd352.
• fw_jump.bin: 74d08f8701dc72ea166d74be62fc3e5bff437d7c73ab68ad2f113cab289c38f9.
• fw_jump_add_uboot_head.bin: 9627edbeea9b115d7040beea27cc61b23b6aca61cd502fd7760d7ee179f42c99.

The source-built U-Boot output is /nix/store/zzz867rp8drrwkhibj0rlqc04sk9g7f8-uboot-k230_canmv_v3_defconfig-riscv64-unknown-linux-gnu-2022.10. strings u-boot finds canaan,stage1-splash, confirming that the 0005 runtime-handoff property is present in this build. The property can only be validated on a board when a successful stage-1 splash path reaches Linux.

Routine flashing policy

On 2026-09-22 the user requested that routine flashes stop repeating full image readback now that the path has repeatedly passed it. tools/ums-session.py therefore defaults to checking write completion and normal Linux return; --full-readback explicitly enables the full device comparison for diagnosis. Target identification and card-size checks still run before a write. For this deployment, the write succeeded and the already-running comparison was intentionally interrupted at the user’s request. The subsequent boot is recorded separately; this attempt is not labeled a readback pass.