Add some safety to flash script

scripts/flash.sh

@@ -9,12 +9,19 @@ then
 fi
 MODEL="$1"
 
-if [ ! -d "models/$1" ]
+if [ ! -d "models/${MODEL}" ]
 then
-  echo "model '$1' not found" >&2
+  echo "model '${MODEL}' not found" >&2
   exit 1
 fi
 MODEL_DIR="$(realpath "models/${MODEL}")"
 
+DMI_MODEL="$(cat /sys/class/dmi/id/product_version)"
+if [ "${DMI_MODEL}" != "${MODEL}" ]
+then
+  echo "Refusing to flash model '${MODEL}' to model '${DMI_MODEL}'" >&2
+  exit 1
+fi
+
 cargo build --release --manifest-path libs/intel-spi/Cargo.toml
 sudo libs/intel-spi/target/release/intel-spi "build/${MODEL}/coreboot.rom"