base-files: move xor() from caldata extraction to functions.sh

The xor() function is defined in each of the caldata extraction
scripts for several targets. Move it to functions.sh to reduce
duplicate code.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

6 files changed, 19 insertions, 80 deletions

diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh
index 860fc04510..81176431d1 100755
--- a/package/base-files/files/lib/functions.sh
+++ b/package/base-files/files/lib/functions.sh
@@ -17,6 +17,22 @@ NO_EXPORT=1
 LOAD_STATE=1
 LIST_SEP=" "
 
+# xor multiple hex values of the same length
+xor() {
+	local val
+	local ret="0x$1"
+	local retlen=${#1}
+
+	shift
+	while [ -n "$1" ]; do
+		val="0x$1"
+		ret=$((ret ^ val))
+		shift
+	done
+
+	printf "%0${retlen}x" "$ret"
+}
+
 append() {
 	local var="$1"
 	local value="$2"
diff --git a/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom b/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
index 7911d0aa1e..0cdd783315 100644
--- a/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
+++ b/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
@@ -42,21 +42,6 @@ ath9k_eeprom_extract_reverse() {
 	printf "%b" "$caldata" > /lib/firmware/$FIRMWARE
 }
 
-xor() {
-	local val
-	local ret="0x$1"
-	local retlen=${#1}
-
-	shift
-	while [ -n "$1" ]; do
-		val="0x$1"
-		ret=$((ret ^ val))
-		shift
-	done
-
-	printf "%0${retlen}x" "$ret"
-}
-
 ath9k_patch_fw_mac() {
 	local mac=$1
 	local mac_offset=$(($2))
diff --git a/target/linux/ath79/base-files/etc/hotplug.d/firmware/11-ath10k-caldata b/target/linux/ath79/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
index 0aa8f3d918..3844481f5a 100644
--- a/target/linux/ath79/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
+++ b/target/linux/ath79/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
@@ -1,23 +1,8 @@
 #!/bin/sh
 
+. /lib/functions.sh
 . /lib/functions/k2t.sh
 
-# xor multiple hex values of the same length
-xor() {
-	local val
-	local ret="0x$1"
-	local retlen=${#1}
-
-	shift
-	while [ -n "$1" ]; do
-		val="0x$1"
-		ret=$((ret ^ val))
-		shift
-	done
-
-	printf "%0${retlen}x" "$ret"
-}
-
 ath10kcal_die() {
 	echo "ath10cal: " "$*"
 	exit 1
@@ -79,7 +64,6 @@ ath10kcal_patch_mac_crc() {
 
 [ -e /lib/firmware/$FIRMWARE ] && exit 0
 
-. /lib/functions.sh
 . /lib/functions/system.sh
 
 board=$(board_name)
diff --git a/target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata b/target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
index be57646128..dfb0a0cf76 100644
--- a/target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
+++ b/target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
@@ -1,20 +1,6 @@
 #!/bin/sh
 
-# xor multiple hex values of the same length
-xor() {
-	local val
-	local ret="0x$1"
-	local retlen=${#1}
-
-	shift
-	while [ -n "$1" ]; do
-		val="0x$1"
-		ret=$((ret ^ val))
-		shift
-	done
-
-	printf "%0${retlen}x" "$ret"
-}
+. /lib/functions.sh
 
 ath10kcal_die() {
 	echo "ath10cal: " "$*"
@@ -88,7 +74,6 @@ ath10kcal_is_caldata_valid() {
 
 [ -e /lib/firmware/$FIRMWARE ] && exit 0
 
-. /lib/functions.sh
 . /lib/functions/system.sh
 
 board=$(board_name)
diff --git a/target/linux/ipq806x/base-files/etc/hotplug.d/firmware/11-ath10k-caldata b/target/linux/ipq806x/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
index bdc36070f2..c0fb1db16d 100644
--- a/target/linux/ipq806x/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
+++ b/target/linux/ipq806x/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
@@ -1,20 +1,6 @@
 #!/bin/sh
 
-# xor multiple hex values of the same length
-xor() {
-	local val
-	local ret="0x$1"
-	local retlen=${#1}
-
-	shift
-	while [ -n "$1" ]; do
-		val="0x$1"
-		ret=$((ret ^ val))
-		shift
-	done
-
-	printf "%0${retlen}x" "$ret"
-}
+. /lib/functions.sh
 
 ath10kcal_die() {
 	echo "ath10cal: " "$*"
@@ -71,7 +57,6 @@ ath10kcal_patch_mac_crc() {
 
 [ -e /lib/firmware/$FIRMWARE ] && exit 0
 
-. /lib/functions.sh
 . /lib/functions/system.sh
 
 board=$(board_name)
diff --git a/target/linux/lantiq/base-files/etc/hotplug.d/firmware/12-ath9k-eeprom b/target/linux/lantiq/base-files/etc/hotplug.d/firmware/12-ath9k-eeprom
index 6f133c82a7..2c4a5a1799 100644
--- a/target/linux/lantiq/base-files/etc/hotplug.d/firmware/12-ath9k-eeprom
+++ b/target/linux/lantiq/base-files/etc/hotplug.d/firmware/12-ath9k-eeprom
@@ -7,22 +7,6 @@
 . /lib/functions/system.sh
 . /lib/upgrade/nand.sh
 
-# xor multiple hex values of the same length
-xor() {
-	local val
-	local ret="0x$1"
-	local retlen=${#1}
-
-	shift
-	while [ -n "$1" ]; do
-		val="0x$1"
-		ret=$((ret ^ val))
-		shift
-	done
-
-	printf "%0${retlen}x" "$ret"
-}
-
 ath9k_eeprom_die() {
 	echo "ath9k eeprom: $*"
 	exit 1