Vendor the command set the menu and shell depend on

bin/blob-hw-nvidia-gsp

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# blob:summary=Detect whether the computer has an NVIDIA GPU with GSP firmware (Turing or newer).
+
+# Turing is the first generation with GSP firmware, and the first to use device
+# IDs at 0x1e00 or above; Maxwell, Pascal, and Volta all sit below that line.
+#
+# Read the cached sysfs IDs rather than lspci, which reads PCI config space and
+# resumes runtime-suspended GPUs.
+pci_devices_path="${BLOB_PCI_DEVICES_PATH:-/sys/bus/pci/devices}"
+
+shopt -s nullglob
+
+for device in "$pci_devices_path"/*; do
+  [[ $(< "$device/vendor") == "0x10de" ]] || continue
+  [[ $(< "$device/class") == 0x03* ]] || continue
+  (( $(< "$device/device") >= 0x1e00 )) && exit 0
+done
+
+exit 1