ohhhhhhhhhhh (exclude linux-extra-rootfs.img build artifact)

CODE/linux/apply_utsm.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+# Apply the current SYSTEM/boot/utsm.elf to the ESP of one or more GPT images,
+# then prove the in-image copy matches (md5 + FLUSH_N marker). Idempotent.
+# ESP-only: Limine loads the kernel via boot(): from the FAT32 ESP.
+# Usage: apply_utsm.sh IMG [IMG...]
+set -Eeuo pipefail
+
+ROOT=/mnt/d/Code/DEAICUP/Deshab
+SRC="$ROOT/SYSTEM/boot/utsm.elf"
+[[ -f "$SRC" ]] || { echo "missing $SRC"; exit 2; }
+
+EXP=$(md5sum "$SRC" | cut -d' ' -f1)
+FLUSH=$(strings -a "$SRC" | grep -c 'VGPU\] FLUSH_N' || true)
+echo "source: md5=$EXP size=$(stat -c %s "$SRC") flush_marker=$FLUSH"
+if [[ "$FLUSH" -lt 1 ]]; then
+    echo "FATAL: source utsm.elf has no FLUSH_N marker; verify cannot judge Plasma scanout"
+    exit 2
+fi
+
+rc=0
+for img in "$@"; do
+    name=$(basename "$img")
+    if [[ ! -f "$img" ]]; then
+        echo "$name: MISSING"
+        rc=1
+        continue
+    fi
+    L=$(losetup --find --show --partscan "$img")
+    sleep 0.3
+    M=$(mktemp -d)
+    if ! mount "${L}p1" "$M" 2>/dev/null; then
+        echo "$name: mount p1 FAILED"
+        rmdir "$M"
+        losetup -d "$L"
+        rc=1
+        continue
+    fi
+    cp -f "$SRC" "$M/boot/utsm.elf"
+    sync
+    got=$(md5sum "$M/boot/utsm.elf" | cut -d' ' -f1)
+    n=$(strings -a "$M/boot/utsm.elf" | grep -c 'VGPU\] FLUSH_N' || true)
+    if [[ "$got" == "$EXP" && "$n" -ge 1 ]]; then
+        echo "$name: APPLIED md5=$got flush_marker=$n"
+    else
+        echo "$name: VERIFY-FAILED md5=$got flush_marker=$n"
+        rc=1
+    fi
+    umount "$M"
+    rmdir "$M"
+    losetup -d "$L"
+done
+exit $rc