build_image: Add verity support for ARM.

build_image

 #!/bin/bash
 
 # Copyright (c) 2009 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 build a bootable keyfob-based chromeos system image from within
 # a chromiumos setup. This assumes that all needed packages have been built into
 # the given target's root with binary packages turned on. This script will
 # build the Chrome OS image using only pre-built binary packages.
@@ skipping 223 matching lines @@
   *86)
     ARCH="x86"
     ;;
   *)
     error "Unable to determine ARCH from toolchain: ${CHOST}"
     exit 1
 esac
 
 if [[ ${FLAGS_enable_rootfs_verification} -eq ${FLAGS_TRUE} ]]; then
   enable_rootfs_verification_flag="--enable_rootfs_verification"
-  # Comment out this section if you need to start testing vboot on arm.
-  if [[ "${ARCH}" = "arm" ]]; then
-    warn "ARM does not yet support --enable_rootfs_verification"
-    warn "Root filesystem verification has been disabled."
-    enable_rootfs_verification_flag=
-    FLAGS_enable_rootfs_verification_flag=${FLAGS_FALSE}
-  fi
 fi
 
 # Hack to fix bug where x86_64 CHOST line gets incorrectly added.
 # ToDo(msb): remove this hack.
 PACKAGES_FILE="${BOARD_ROOT}/packages/Packages"
 sudo sed -e "s/CHOST: x86_64-pc-linux-gnu//" -i "${PACKAGES_FILE}"
 
 # Handle existing directory.
 if [[ -e "${OUTPUT_DIR}" ]]; then
   if [[ ${FLAGS_replace} -eq ${FLAGS_TRUE} ]]; then
@@ skipping 500 matching lines @@
   echo "Developer image created as ${DEVELOPER_IMAGE_NAME}"
 fi
 
 print_time_elapsed
 
 echo "To copy to USB keyfob, OUTSIDE the chroot, do something like:"
 echo "  ./image_to_usb.sh --from=${OUTSIDE_OUTPUT_DIR} --to=/dev/sdX"
 echo "To convert to VMWare image, INSIDE the chroot, do something like:"
 echo "  ./image_to_vm.sh --from=${OUTSIDE_OUTPUT_DIR} --board=${BOARD}"
 echo "from the scripts directory where you entered the chroot."