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).
22 lines
1.7 KiB
Bash
22 lines
1.7 KiB
Bash
#!/bin/bash
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# B7C cache candidate: exact recipe of r2/t4/mkfs-cache-t4.sh (9d3bc890); only the initrd = B7C initramfs (T4 + time bootstrap overlay),
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# its file name, the extlinux label, the fs label and UUIDs differ. Runs on 480s (mke2fs 1.47.2). Offline only; writes nothing to the board.
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set -e
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cd ~/doc/modem/jz08-aurora/b7/b7c/cache
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OUT=${1:-cache-extlinux-b7c.img}; B5=../../../b5b/components
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(cd ../../../b6p && sha256sum -c cache-components.sha256 | grep -v initramfs)
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echo "f219b04d539faf34cd096eaacf6bcf048c3639fa57c076d40a2812bd3ff74699 ../out/initramfs-b7c.cpio.gz" | sha256sum -c
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ST=$(mktemp -d); mkdir -p $ST/extlinux
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cp $B5/Image.gz-dtb $B5/aurora-mm1.dtb $ST/; cp ../out/initramfs-b7c.cpio.gz $ST/
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printf "default b7c\nlabel b7c\n\tlinux /Image.gz-dtb\n\tfdt /aurora-mm1.dtb\n\tinitrd /initramfs-b7c.cpio.gz\n\tappend %s\n" "$(cat $B5/cmdline.txt)" > $ST/extlinux/extlinux.conf
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cp $ST/extlinux/extlinux.conf extlinux-b7c.conf
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chmod 0644 $ST/*.* $ST/extlinux/extlinux.conf; chmod 0755 $ST $ST/extlinux
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find $ST -exec touch -h -d @1790726400 {} +
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rm -f $OUT; truncate -s 134217728 $OUT
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E2FSPROGS_FAKE_TIME=1790726400 /sbin/mke2fs -F -q -t ext2 -O none,filetype,sparse_super \
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-b 4096 -I 128 -N 64 -m 0 -L aurora-b7c -U 4a5a3038-b6f0-4000-8000-00000000b7c0 \
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-E root_owner=0:0,hash_seed=4a5a3038-b6f0-4000-8000-00000000b7c1 -d $ST $OUT 32768
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rm -rf $ST
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for f in / /lost+found /extlinux /extlinux/extlinux.conf /Image.gz-dtb /aurora-mm1.dtb /initramfs-b7c.cpio.gz; do for t in atime ctime mtime; do echo "sif $f $t @1790726400"; done; done > /tmp/b7c-sif.$$
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/sbin/debugfs -w -f /tmp/b7c-sif.$$ $OUT >/dev/null 2>&1; rm -f /tmp/b7c-sif.$$
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stat -c "%n %s" $OUT; sha256sum $OUT
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