53 lines
4.3 KiB
Bash
53 lines
4.3 KiB
Bash
#!/bin/bash
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# B12P — the ONLY write: cache := B12P candidate (B10 production kernel/DTB/cmdline unchanged + initramfs overlay: persistent Alpine on
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# userdata auto-mounted at /alpine). Run on 480s ONLY after explicit GO. Derived 1:1 from b10/b10b5/B10-write.sh (B10_CACHE_WRITE_VERIFIED 2026-10-04);
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# changed: image/hashes, rollback refs, log dir, and userdata is no longer compared to A4pre (it was formatted as ext4 'aurora-alpine' in B12P-1)
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# - only its superblock (magic + label) is checked. The pre-write readback of the live cache (must be B10 c3732515) is kept as backup.
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# Entry: HW EDL (battery on, D+->GND, plug USB, release). Never `edl reset`. Stops at first failed gate.
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cd ~/doc/modem/jz08-aurora || exit 1
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L=firehose/007050e100000000_394a2e47cf830150_fhprg_peek.bin
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O=logs/b12/b12p/W ; A3=logs/b5a/A3 ; P=logs/b5a/A4pre ; mkdir -p $O
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NEW=b12/b12p/cache/cache-extlinux-b12p.img ; NEW_SHA=98d061eff0951ef5d05c9a4356bec959726f9462525325f7908a0bcc0e2e7394
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OLD_SHA=c37325156a6f4c013982cf01bcb5b2ddb026b0298e9c3ec0be87f57d693464b8 # current cache = B10 extlinux
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BOOT_SHA=e9579f33c7304cd47f487f2b61cd9226dc04fd3a63775d62b4b95fc15bd3ebff
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ABOOT_SHA=15208dbb4feafccd72d2b06db5714cd746c216701f0ef8822c58bb47105d37c4 # aboot = lk1st-b9l (B9L-PERSIST)
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die(){ echo "STOP: $*"; exit 1; }
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sha(){ sha256sum "$1" | cut -d" " -f1; }
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E(){ edl --loader=$L "$@"; }
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echo "== G0 inputs"
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[ "$(sha $L)" = 53f193500c03248f0d671ab57bfe9ca8a42967e97f28403294b4b3f854075aca ] || die loader
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[ "$(sha $NEW)" = $NEW_SHA ] && [ $(stat -c %s $NEW) = 134217728 ] || die candidate
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[ "$(sha b10/b10b3/cache-v4/cache-extlinux-b10b5.img)" = $OLD_SHA ] || die rollback-image
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[ "$(sha logs/b10/b10b5/W/11-cache-readback.bin)" = $OLD_SHA ] || die b10-readback-backup
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lsusb | grep -q 05c6:9008 || die "no 9008"
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echo "== G1 identity + geometry + baseline"
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E printgpt > $O/00-printgpt.log 2>&1 || die printgpt
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grep -aq "Serial: *0x<SAHARA_SERIAL>" $O/00-printgpt.log || grep -aq "Mode detected: firehose" $O/00-printgpt.log || die serial
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grep -a "^cache:" $O/00-printgpt.log | grep -q "Offset 0x000000004118c000, Length 0x0000000008000000" || die cache-geometry
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E rs 0 34 $O/pre-gptp.bin >/dev/null 2>&1; cmp $O/pre-gptp.bin $A3/gpt-primary-34.bin || die gpt-changed
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E r boot $O/pre-boot.bin >/dev/null 2>&1; [ "$(sha $O/pre-boot.bin)" = $BOOT_SHA ] || die boot-not-emmc1
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E r aboot $O/pre-aboot.bin >/dev/null 2>&1; [ "$(sha $O/pre-aboot.bin)" = $ABOOT_SHA ] || die aboot-not-b9l
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E r cache $O/pre-cache.bin >/dev/null 2>&1; [ "$(sha $O/pre-cache.bin)" = $OLD_SHA ] || die cache-not-backup
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echo "== W cache := candidate (LBA 2133088, 262144 sectors)"
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E w cache $NEW > $O/10-cache-write.log 2>&1; echo "rc=$?"; grep -a "Wrote" $O/10-cache-write.log
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E r cache $O/11-cache-readback.bin > $O/11-cache-readback.log 2>&1 || die readback-rc
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sha256sum $NEW $O/11-cache-readback.bin
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cmp $NEW $O/11-cache-readback.bin || die "CACHE READBACK MISMATCH — do NOT reboot; run b12/b12p/B12P-rollback.sh"
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echo CACHE_MATCH
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echo "== V everything else unchanged"
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E rs 0 34 $O/post-gptp.bin >/dev/null 2>&1; cmp $O/post-gptp.bin $A3/gpt-primary-34.bin || die gptp
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E rs 7634911 33 $O/post-gptb.bin >/dev/null 2>&1; cmp $O/post-gptb.bin $A3/gpt-backup-33.bin || die gptb
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E rs 305184 1024 $O/post-tzbak.bin >/dev/null 2>&1; cmp $O/post-tzbak.bin $A3/tzbak-305184.bin || die tzbak
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E r boot $O/post-boot.bin >/dev/null 2>&1; [ "$(sha $O/post-boot.bin)" = $BOOT_SHA ] || die boot
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E r aboot $O/post-aboot.bin >/dev/null 2>&1; [ "$(sha $O/post-aboot.bin)" = $ABOOT_SHA ] || die aboot
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for p in sbl1 rpm tz hyp recovery modemst1 modemst2 fsg fsc persist; do
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E r $p $O/post-$p.bin >/dev/null 2>&1; cmp $O/post-$p.bin $A3/$p.bin || die "$p changed"; echo "$p == A3"
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done
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for p in modem system; do
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E r $p $O/post-$p.bin >/dev/null 2>&1; cmp $O/post-$p.bin $P/$p.bin || die "$p changed"; echo "$p == A4pre"; rm -f $O/post-$p.bin
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done
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E rs 2428000 8 $O/post-userdata-sb.bin >/dev/null 2>&1
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[ "$(dd if=$O/post-userdata-sb.bin bs=1 skip=1080 count=2 2>/dev/null | od -An -tx1 | tr -d ' \n')" = 53ef ] && [ "$(dd if=$O/post-userdata-sb.bin bs=1 skip=1144 count=16 2>/dev/null | tr -d '\000')" = aurora-alpine ] || die "userdata superblock is not ext4 aurora-alpine"
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echo "userdata = ext4 aurora-alpine (superblock)"
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(cd $O && sha256sum *.bin > SHA256SUMS)
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echo "B12P_CACHE_WRITE_VERIFIED — power off fully (USB, then battery) before first boot"
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