From 07ffc2005a975030408cc836b19087e46fc24729 Mon Sep 17 00:00:00 2001
From: Timur Tabi <ttabi@nvidia.com>
Date: Mon, 17 Mar 2025 13:32:15 -0500
Subject: [PATCH] copy-firmware: add usage help text

Add a -h/--help command-line option to show some usage help text.
Also display that usage whenever an error occurs.

Signed-off-by: Timur Tabi <ttabi@nvidia.com>
---
 copy-firmware.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/copy-firmware.sh b/copy-firmware.sh
index dd4b9b6f..9a2b7156 100755
--- a/copy-firmware.sh
+++ b/copy-firmware.sh
@@ -11,8 +11,13 @@ compext=
 destdir=
 num_jobs=1
 
+usage() {
+    echo "Usage: $0 [-v] [-jN] [--xz|--zstd] <destination directory>"
+}
+
 err() {
     printf "ERROR: %s\n" "$*"
+    usage
     exit 1
 }
 
@@ -66,6 +71,11 @@ while test $# -gt 0; do
             shift
             ;;
 
+        -h|--help)
+            usage
+            exit 1
+            ;;
+
         *)
             if test -n "$destdir"; then
                 err "unknown command-line options: $*"