update/blobs/*: unify checking of defconfig files

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/defconfig.sh

@@ -0,0 +1,11 @@
+# Copyright (c) 2023 Leah Rowe <leah@libreboot.org>
+# SPDX-License-Identifier: MIT
+
+check_defconfig()
+{
+	no_config="printf \"No target defconfig in %s\\n\" ${1} 1>&2; return 1"
+	for x in "${1}"/config/*; do
+		[ -f "${x}" ] && no_config=""
+	done
+	eval "${no_config}"
+}

script/update/blobs/download

@@ -6,6 +6,7 @@
 # SPDX-License-Identifier: GPL-3.0-only
 
 . "include/err.sh"
+. "include/defconfig.sh"
 
 agent="Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0"
 
@@ -56,12 +57,7 @@ main()
 	board="${1}"
 	boarddir="${cbcfgsdir}/${board}"
 
-	no_config="printf \"No config for target, %s\\n\" ${board} 1>&2; exit 0"
-	for x in "${boarddir}"/config/*; do
-		[ -f "${x}" ] && no_config=""
-	done
-	eval "${no_config}"
-
+	check_defconfig "${boarddir}" || exit 0
 	detect_firmware || exit 0
 	scan_sources_config
 

script/update/blobs/extract

@@ -6,6 +6,7 @@
 # SPDX-License-Identifier: GPL-3.0-only
 
 . "include/err.sh"
+. "include/defconfig.sh"
 
 sname=""
 board=""
@@ -61,11 +62,7 @@ extract_blobs()
 {
 	printf "extracting blobs for %s from %s\n" ${board} ${vendor_rom}
 
-	no_config="printf \"No configs on target, %s\\n\" ${board} 1>&2; exit 1"
-	for x in "${boarddir}"/config/*; do
-		[ -f "${x}" ] && no_config=""
-	done
-	eval "${no_config}"
+	check_defconfig "${boarddir}" || exit 1
 	set -- "${boarddir}/config/"*
 	. "${1}" 2>/dev/null
 

script/update/blobs/inject

@@ -6,6 +6,7 @@
 # SPDX-License-Identifier: GPL-3.0-only
 
 . "include/err.sh"
+. "include/defconfig.sh"
 
 sname=""
 archive=""
@@ -179,12 +180,7 @@ patch_rom()
 {
 	rom="${1}"
 
-	no_config="printf \"No configs on target, %s\\n\" ${board} 1>&2; exit 1"
-	for x in "${boarddir}"/config/*; do
-		[ -f "${x}" ] && no_config=""
-	done
-	eval "${no_config}"
-
+	check_defconfig "${boarddir}" || exit 1	
 	set -- "${boarddir}/config/"*
 	. "${1}" 2>/dev/null