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.
70 lines
3 KiB
Diff
70 lines
3 KiB
Diff
--- ../initramfs-usb1/init 2026-09-30 03:43:03.785764611 +0600
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+++ init 2026-09-30 03:50:19.123970771 +0600
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@@ -1,5 +1,6 @@
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#!/bin/busybox sh
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-# Aurora RAM boot USB1 — diagnostics + USB NCM gadget (static 172.16.42.1/24).
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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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@@ -9,11 +10,48 @@
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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 USB1 ==="
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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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-echo "--- block devices (expected: none, eMMC disabled in DT)"; ls /sys/block
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+
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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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@@ -48,6 +86,8 @@
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log "network: $ifc 172.16.42.1/24 up (static, no DHCP)"
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}
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usb_up || log "USB/NCM setup incomplete - staying on UART shell"
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+
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+if [ "$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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