105bef466a
Sanitized research log, build/reproducibility docs, DTS, kernel configs, patches, initramfs sources, bootchain migration plans and test logs. B5 direct boot PASS; B6 modem lifecycle in progress. No dumps, NV/EFS, vendor firmware or device identifiers included.
95 lines
4 KiB
Text
Executable file
95 lines
4 KiB
Text
Executable file
#!/bin/busybox sh
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# Aurora RAM boot EMMC1 — USB1 + internal eMMC READ-ONLY verification.
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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 EMMC1 ==="
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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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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: $ifc 172.16.42.1/24 up (static, no DHCP)"
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}
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usb_up || log "USB/NCM setup incomplete - staying on UART shell"
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if [ "$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 "=== 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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