1 files changed, 97 insertions, 0 deletions

diff --git a/tools/mkmi4.sh b/tools/mkmi4.sh
new file mode 100755
index 0000000000..8dc90d886f
--- /dev/null
+++ b/tools/mkmi4.sh
@@ -0,0 +1,97 @@
+#!/bin/sh
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+# $Id$
+#
+# Purpose of this script:
+#
+# Inputs: music player model name and a file name
+#
+# Action: Build a valid mi4 file (prepending and appending magic)
+#         Encrypt the file with TEA encryption so that the model's own
+#         bootloader accepts this file.
+#         Sign the file with a DSA signature the bootloader accepts
+#
+# Output: A built, encrypted and signed mi4 file image.
+#
+# Requirement:
+#
+# This script assumes that you have the mi4code tool in your path, that
+# you have the environment variable MI4CODE pointing to the tool or that you
+# have it in the same dir that you invoke this script with.
+#
+# mi4 info and tool are here: http://daniel.haxx.se/sansa/mi4.html
+#
+
+mkmi4=$0
+target=$1
+input=$2
+output=$3
+
+# scan the $PATH for the given command
+findtool(){
+  file="$1"
+
+  IFS=":"
+  for path in $PATH
+  do
+    # echo "checks for $file in $path" >&2
+    if test -f "$path/$file"; then
+      echo "$path/$file"
+      return
+    fi
+  done
+}
+
+help () {
+  echo "Usage: mi4fix.sh <e200/h10> <input> <output>"
+  exit
+}
+
+if test -z "$output"; then
+  help
+fi
+
+case $target in
+  e200)
+    tea=sansa
+    ;;
+  h10)
+    tea=20gc_eng
+    ;;
+  *)
+    echo "unsupported target"
+    help
+    ;;
+esac
+
+if test -z "$MI4CODE"; then
+  tool=`findtool mi4code`
+  if test -z "$tool"; then
+    # not in path
+    tool=`dirname $mkmi4`/mi4code
+    if ! test -f $tool; then
+      echo "Couldn't find mi4code"
+      exit
+    fi
+  fi
+else
+  tool=$MI4CODE
+fi
+
+
+
+
+# build a 010301 version
+echo "$tool build $input $output.raw"
+$tool build $input $output.raw
+# encrypt
+echo "$tool encrypt $output.raw $output.encrypt $tea"
+$tool encrypt $output.raw $output.encrypt $tea
+# sign
+echo "$tool sign $output.encrypt $output"
+$tool sign $output.encrypt $output