gentoo-overlay/sys-kernel/linux-firmware/files/linux-firmware-copy-firmware-r4.patch

--- a/copy-firmware.sh	2024-02-24 10:47:41.073251066 -0500
+++ b/copy-firmware.sh	2024-02-24 10:25:45.283922934 -0500
@@ -50,6 +50,16 @@ while test $# -gt 0; do
             shift
             ;;
 
+        --firmware-list)
+            if [ -n "$2" ]; then
+                FIRMWARE_LIST=`cat $2`
+                shift 2
+            else
+                echo "ERROR: '--firmware-list' requires a non-empty option argument of firmware files to install"
+                exit 1
+            fi
+            ;;
+
         -*)
             if test "$compress" = "cat"; then
                 echo "ERROR: unknown command-line option: $1"
@@ -85,6 +95,7 @@ fi
 # shellcheck disable=SC2162 # file/folder name can include escaped symbols
 grep -E '^(RawFile|File):' WHENCE | sed -E -e 's/^(RawFile|File): */\1 /;s/"//g' | while read k f; do
     test -f "$f" || continue
+	   [ -n "${FIRMWARE_LIST}" ]  && if ! echo "${FIRMWARE_LIST}" | grep -q "${f}"; then continue; fi
     install -d "$destdir/$(dirname "$f")"
     $verbose "copying/compressing file $f$compext"
     if test "$compress" != "cat" && test "$k" = "RawFile"; then
@@ -107,6 +118,7 @@ fi
 
 # shellcheck disable=SC2162 # file/folder name can include escaped symbols
 grep -E '^Link:' WHENCE | sed -e 's/^Link: *//g;s/-> //g' | while read f d; do
+	   [ -n "${FIRMWARE_LIST}" ]  && if ! echo "${FIRMWARE_LIST}" | grep -q "${f}"; then continue; fi
     if test -L "$f$compext"; then
         test -f "$destdir/$f$compext" && continue
         $verbose "copying link $f$compext"