[linux] Create dfu-util script to select correct program (32/64-bit) (#46)

* Add dfu-util script to use correct arch program.

* Add i386 binaries from official distribution.

linux/dfu-util.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+#
+# Use the correct dfu-util program based on the architecture
+#
+
+# Get the directory where the script is running.
+DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+
+# Choose dfu program by arch
+if [ `uname -m` ==  "x86_64" ]; then
+  DFU_UTIL=${DIR}/dfu-util_x86_64/dfu-util
+else
+  DFU_UTIL=${DIR}/dfu-util/dfu-util
+fi
+
+# Not found!
+if [ ! -x "${DFU_UTIL}" ]; then
+  echo "$0: error: cannot find ${DFU_UTIL}" >&2
+  exit 2
+fi
+
+# Pass all parameters through
+"${DFU_UTIL}" "$@"

linux/maple_upload

@@ -26,18 +26,7 @@ DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 
 "${DIR}/upload-reset" ${dummy_port_fullpath} 750
 
-if [ `uname -m` ==  "x86_64" ]; then
+"${DIR}/dfu-util.sh" -d ${usbID} -a ${altID} -D ${binfile} ${dfuse_addr} -R
-  DFU_UTIL=${DIR}/dfu-util_x86_64/dfu-util
-else
-  DFU_UTIL=${DIR}/dfu-util/dfu-util
-fi
-
-if [ ! -x "${DFU_UTIL}" ]; then
-    echo "$0: error: cannot find ${DFU_UTIL}" >&2
-    exit 2
-fi
-
-"${DFU_UTIL}" -d ${usbID} -a ${altID} -D ${binfile} ${dfuse_addr} -R
 
 echo -n Waiting for ${dummy_port_fullpath} serial...