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).
135 lines
6.5 KiB
Text
Executable file
135 lines
6.5 KiB
Text
Executable file
#!/bin/busybox sh
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# Aurora RAM boot MM1 — QMI1 + ModemManager (qcom-soc) + D-Bus + polkit + eudev.
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# R2/T4: B6P init + telnetd on NCM (RAM test image, never written to flash).
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# B6P: after eMMC RO + /firmware RO + USB NCM, autostarts /etc/init.d/aurora-modem (B6N-proven lifecycle).
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# NEVER mounts, fsck's, formats, trims or writes any mmcblk* device.
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# No block devices, no firmware, no radios. Never exits (failures leave the UART shell).
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/bin/busybox mkdir -p /proc /sys /dev /tmp /usr/bin /usr/sbin /sbin
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/bin/busybox --install -s
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mount -t proc proc /proc
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mount -t sysfs sysfs /sys
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mount -t devtmpfs devtmpfs /dev 2>/dev/null
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mount -t configfs configfs /sys/kernel/config
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log() { echo "[init] $*"; echo "[init] $*" > /dev/kmsg 2>/dev/null; }
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echo
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echo "=== AURORA RAM BOOT MM1 + B6P modem service ==="
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uname -a
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echo "--- model"; cat /proc/device-tree/model; echo
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echo "--- cmdline"; cat /proc/cmdline
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emmc_ro() {
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for i in $(seq 1 100); do [ -b /dev/mmcblk0 ] && break; sleep 0.1; done
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if [ ! -b /dev/mmcblk0 ]; then log "EMMC: /dev/mmcblk0 did not appear"; return 1; fi
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sleep 0.5 # let partition nodes settle
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for d in /dev/mmcblk0 /dev/mmcblk0p* /dev/mmcblk0boot*; do [ -b "$d" ] && blockdev --setro "$d"; done
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bad=0; n=0
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for d in /dev/mmcblk0 /dev/mmcblk0p* /dev/mmcblk0boot*; do
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[ -b "$d" ] || continue; n=$((n+1)); r=$(blockdev --getro "$d")
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[ "$r" = "1" ] || { bad=1; log "EMMC-RO FAIL $d getro=$r"; }
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done
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echo "EMMC-RO-SUMMARY devices=$n all_ro=$([ $bad = 0 ] && echo YES || echo NO)"
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[ $bad = 0 ] || return 2
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log "EMMC: all $n block devices read-only (getro=1)"
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}
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emmc_report() {
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echo "=== EMMC-INFO-BEGIN"
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C=/sys/class/block/mmcblk0/device
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for f in name manfid oemid cid date serial type; do echo "$f=$(cat $C/$f 2>/dev/null)"; done
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echo "size_512=$(cat /sys/class/block/mmcblk0/size) logical_block=$(cat /sys/class/block/mmcblk0/queue/logical_block_size) bytes=$(blockdev --getsize64 /dev/mmcblk0)"
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cat /proc/partitions
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echo "=== EMMC-GPT-BEGIN (pN name start_512 size_512 ro)"
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for p in /sys/class/block/mmcblk0p*; do
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b=$(basename $p); nm=$(sed -n 's/^PARTNAME=//p' $p/uevent)
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echo "$b $nm $(cat $p/start) $(cat $p/size) $(cat $p/ro)"
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done
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echo "=== EMMC-GPT-END"
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echo "=== EMMC-SHA-BEGIN"
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for want in sbl1 rpm DDR sec aboot hyp tz tzbak; do
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for p in /sys/class/block/mmcblk0p*; do
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nm=$(sed -n 's/^PARTNAME=//p' $p/uevent)
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[ "$nm" = "$want" ] && echo "$nm $(basename $p) $(sha256sum /dev/$(basename $p) | cut -d' ' -f1)"
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done
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done
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echo "=== EMMC-SHA-END"
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echo "=== EMMC-INFO-END"
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}
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emmc_ro && EMMC_RO_OK=1 # RO FIRST, before anything else touches the disk
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nv_snapshot() { # $1 = before|after ; reads RO block devices only
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o=/tmp/nv-$1.txt; : > $o
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for want in modemst1 modemst2 fsg fsc persist; do
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for p in /sys/class/block/mmcblk0p*; do
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[ "$(sed -n 's/^PARTNAME=//p' $p/uevent)" = "$want" ] && echo "$want $(basename $p) $(sha256sum /dev/$(basename $p) | cut -d' ' -f1)" >> $o
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done
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done
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echo "stat $(cat /sys/block/mmcblk0/stat)" >> $o
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}
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b1_modem_fat() {
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mkdir -p /dev/disk/by-partlabel /firmware
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for p in /sys/class/block/mmcblk0p*; do
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n=$(sed -n 's/^PARTNAME=//p' $p/uevent); [ -n "$n" ] && ln -sf /dev/$(basename $p) /dev/disk/by-partlabel/$n
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done
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M=$(readlink /dev/disk/by-partlabel/modem); echo "B1 modem partition by PARTLABEL: modem -> $M ro=$(blockdev --getro $M)"
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[ "$(blockdev --getro $M)" = 1 ] || { log "B1: modem partition not RO - NOT mounting"; return 1; }
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mount -t vfat -o ro,nosuid,nodev,noexec,shortname=lower $M /firmware || { log "B1: mount failed"; return 1; }
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grep " /firmware " /proc/mounts
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grep " /firmware " /proc/mounts | grep -q " ro," || { log "B1: /firmware is NOT ro - unmounting"; umount /firmware; return 1; }
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(cd /firmware && find . -type f | sort | while read f; do echo "$(sha256sum "$f" | cut -d' ' -f1) ${f#./}"; done) > /tmp/fw-sha.txt
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echo "B1 firmware files: $(wc -l < /tmp/fw-sha.txt)"
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echo -n /firmware/image > /sys/module/firmware_class/parameters/path
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log "B1: modem FAT mounted RO at /firmware, firmware path /firmware/image"
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}
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if [ "$EMMC_RO_OK" = 1 ]; then
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echo "stat-before-B1 $(cat /sys/block/mmcblk0/stat)" > /tmp/stat-before-B1.txt
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nv_snapshot before
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b1_modem_fat && B1_OK=1
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fi
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usb_up() {
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for i in $(seq 1 50); do
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udc=$(ls /sys/class/udc 2>/dev/null | head -1)
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[ -n "$udc" ] && break
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sleep 0.2
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done
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echo "--- /sys/class/udc:"; ls -l /sys/class/udc 2>&1
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if [ -z "$udc" ]; then log "NO UDC found - USB gadget skipped"; return 1; fi
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# DEVELOPMENT-ONLY IDs (same dev setup as JZ02: Google 18d1:d001) - not for production
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G=/sys/kernel/config/usb_gadget/aurora
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mkdir -p $G || return 1
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echo 0x18d1 > $G/idVendor
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echo 0xd001 > $G/idProduct
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mkdir -p $G/strings/0x409
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echo "Aurora" > $G/strings/0x409/manufacturer
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echo "Aurora RAM Boot" > $G/strings/0x409/product
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echo "<EMMC_SERIAL>" > $G/strings/0x409/serialnumber
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mkdir -p $G/functions/ncm.usb0 || { log "ncm function create FAILED"; return 1; }
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mkdir -p $G/configs/c.1/strings/0x409
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echo "NCM" > $G/configs/c.1/strings/0x409/configuration
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ln -s $G/functions/ncm.usb0 $G/configs/c.1/
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echo "$udc" > $G/UDC || { log "bind to UDC '$udc' FAILED"; return 1; }
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log "usb gadget bound to UDC '$udc'"
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ifc=$(cat $G/functions/ncm.usb0/ifname 2>/dev/null)
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log "ncm ifname='$ifc' dev_addr=$(cat $G/functions/ncm.usb0/dev_addr) host_addr=$(cat $G/functions/ncm.usb0/host_addr)"
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[ -n "$ifc" ] || return 1
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ip link set lo up
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ip addr add 172.16.42.1/24 dev "$ifc"
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ip link set "$ifc" up
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ip addr show "$ifc"
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log "network: $ifc 172.16.42.1/24 up (static, no DHCP)"
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}
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usb_up || log "USB/NCM setup incomplete - staying on UART shell"
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# R2/T4 (RAM-only, DEVELOPMENT): unauthenticated root telnet shell on the NCM link only (bind 172.16.42.1:23).
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if ip addr show | grep -q " 172.16.42.1/24 "; then
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mkdir -p /dev/pts; mount -t devpts devpts /dev/pts || log "T4: devpts mount FAILED"
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if telnetd -l /bin/sh -b 172.16.42.1 -p 23; then log "T4: telnetd started on 172.16.42.1:23"; else log "T4: telnetd start FAILED"; fi
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else log "T4: no 172.16.42.1 - telnetd NOT started"; fi
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if [ "$EMMC_RO_OK" = 1 ]; then emmc_report; else log "EMMC: RO not confirmed or device missing - NO further disk access"; fi
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echo "B1_OK=${B1_OK:-0}"
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# B6P: modem autostart only when every eMMC device is RO and the modem FAT is mounted RO (the controller re-checks both).
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if [ "$EMMC_RO_OK" = 1 ] && [ "$B1_OK" = 1 ]; then /etc/init.d/aurora-modem start; else log "B6P: modem autostart SKIPPED (EMMC_RO_OK=${EMMC_RO_OK:-0} B1_OK=${B1_OK:-0})"; fi
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echo "=== entering shell (exit restarts it) ==="
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while true; do
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setsid cttyhack sh
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echo "shell exited, restarting"; sleep 1
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done
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