add stuff

root/scripts/host/build_payload.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+# Builds the final libtvsysinfo payload from the included original.
+# Requires: python3, arm-linux-gnueabihf-{as,ld,objcopy}.
+set -euo pipefail
+HERE="$(cd "$(dirname "$0")" && pwd)"
+ROOT="$(cd "$HERE/../.." && pwd)"
+
+for t in arm-linux-gnueabihf-as arm-linux-gnueabihf-ld arm-linux-gnueabihf-objcopy python3; do
+  command -v "$t" >/dev/null || { echo "missing: $t"; exit 1; }
+done
+
+python3 "$HERE/build_tvi_payload.py"
+echo "---"
+sha256sum "$ROOT/tools/pub/libtvsysinfo.so"
+echo "expected: 37b13f91959acea9b3c3fd4d0e62bb2d4cb41f773add060bef68ac67657f5b0a"