1 files changed, 44 insertions, 0 deletions
diff --git a/scripts/keygeneration/increment_firmware_data_key.sh b/scripts/keygeneration/increment_firmware_data_key.sh
new file mode 100755
index 00000000..facd776d
--- /dev/null
+++ b/scripts/keygeneration/increment_firmware_data_key.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Script to increment firmware version key for firmware updates.
+# Used when revving versions for a firmware update.
+
+# Load common constants and variables.
+. "$(dirname "$0")/common.sh"
+
+# Abort on errors.
+set -e
+
+if [ $# -ne 1 ]; then
+  cat <<EOF
+  Usage: $0 <keyset directory>
+
+  Increments the firmware version in the specified keyset.
+EOF
+  exit 1
+fi
+
+KEY_DIR=$1
+
+main() {
+  load_current_versions
+  new_firmkey_ver=$(increment_version "${KEY_DIR}" "firmware_key_version")
+
+  backup_existing_firmware_keys ${CURR_FIRM_VER} ${CURR_FIRMKEY_VER}
+
+  cat <<EOF
+Generating new firmware version key.
+
+New Firmware key version (due to firmware key change): ${new_firmkey_ver}.
+EOF
+  make_pair firmware_data_key ${FIRMWARE_DATAKEY_ALGOID} ${new_firmkey_ver}
+  make_keyblock firmware ${FIRMWARE_KEYBLOCK_MODE} firmware_data_key root_key
+
+  write_updated_version_file ${new_firmkey_ver} ${CURR_FIRM_VER} \
+    ${CURR_KERNKEY_VER} ${CURR_KERN_VER}
+}
+
+main "$@"