base-files: default_do_upgrade: accept & forward image extraction command

[openwrt.git] / package / base-files / files / lib / upgrade / common.sh

diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
index 8cdabc6..189ef69 100644 (file)
--- a/package/base-files/files/lib/upgrade/common.sh
+++ b/package/base-files/files/lib/upgrade/common.sh
@@ -212,12 +212,16 @@ jffs2_copy_config() {
        fi
 }
 
+# Flash firmware to MTD partition
+#
+# $(1): path to image
+# $(2): (optional) pipe command to extract firmware, e.g. dd bs=n skip=m
 default_do_upgrade() {
        sync
        if [ "$SAVE_CONFIG" -eq 1 ]; then
-               get_image "$1" | mtd $MTD_CONFIG_ARGS -j "$CONF_TAR" write - "${PART_NAME:-image}"
+               get_image "$1" "$2" | mtd $MTD_CONFIG_ARGS -j "$CONF_TAR" write - "${PART_NAME:-image}"
        else
-               get_image "$1" | mtd write - "${PART_NAME:-image}"
+               get_image "$1" "$2" | mtd write - "${PART_NAME:-image}"
        fi
 }