8d7721c775
B7A: QMI DMS time vs VNIIFTRI NTP (DMS = UTC - 0.28 s, sigma 1 ms; NITZ = DMS truncated to 1 s). B7B: a 1970 -> 2026 date -s step is harmless for the modem stack. B7C: aurora-modem probes DMS/NITZ along the start flow and steps CLOCK_REALTIME once at the first valid sample (REG registered/attached), never RTC; background SNTP check (query only) after START OK. 3/3 class-A cold boots PASS (residual +0.04/+0.36/+0.84 s), cache 14fe453a written (B7C_WRITE_VERIFIED) and verified by a normal power-on (V1, +0.26 s). Also publishes the prerequisite R2 (boot-hang / lk eMMC investigation, T4 telnet baseline that B7C builds on) and R3 (autonomous cold boot, NCM loss) material, and extends tools/publish-sanitize.py to r2/, r3/, b7/. Binary images, initramfs, busybox and raw logs stay out (see b7/*/SHA256SUMS).
6 lines
696 B
Markdown
6 lines
696 B
Markdown
# B7C-V1 — first normal power-on from the written B7C cache: **PASS**
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Power-off ≥ 90 s, battery → USB, no RESET, no fastboot, no host action. One SBL1 start (20:00:02 local), lk eMMC OK (HS200), **"Trying to boot 'b7c'"**,
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RTC at boot 3 s → class A. Running files: aurora-modem 932c9ff2, busybox a6bb1e6e.
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Probes 1-4 INVALID (DMS 3224…7180 ms), 5 REG registered/attached VALID (NITZ 17:00:24, Δ +0.20 s) → **TIME SET at uptime 21.44 s** (24 → 2026-10-02 17:00:25), 6-7 VALID.
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START OK 73.9 s (Beeline home), LTE ping 3/3. SNTP check +0.262 s (best, ntp3, 51 ms); verify ntp2 +0.259…+0.274 s. Clock kept.
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UNSYNC kept, RTC untouched, eMMC writes 0, dmesg-errs 0, no FAIL/rollback.
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