check whether we are running on mario before executing mario specific workarounds.

chromeos-postinst

 #!/bin/sh
 
 # 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.
 
 # This script is called after an AutoUpdate or USB install. The first argument
 # is the partition where the new rootfs is installed or empty. If non-empty
 # the rootfs should be updated w/ the new bootloader config. If empty, the
 # rootfs is mounted-read only and should not be updated.
@@ skipping 109 matching lines @@
     fi
     FIRMWARE_UPDATE_ARGS=" $FIRMWARE_UPDATE_MODE "
     echo "Updating firmware ($FIRMWARE_UPDATE_ARGS)"
     env INSTALL_ROOT="${INSTALL_ROOT}" \
       "${FIRMWARE_UPDATE_SCRIPT}" ${FIRMWARE_UPDATE_ARGS}
     # Next step after postinst may take a lot of time (eg, disk wiping)
     # and people may confuse that as 'firmware update takes a long wait',
     # we explicitly prompt here.
     if [ "$?" -eq 0 ]; then
       echo "Firmware update complete."
-      if [ -n "${RECHECK_AFTER_UPDATE}" ]; then
+      if [ "$(mosys platform name)" = "Mario" ] &&
+          [ -n "${RECHECK_AFTER_UPDATE}" ]; then
         echo "Check for kernel subkey changes"
         # FIXME(wfrichar): This is a platform-specific workaround for
         # chrome-os-partner:1654. It should probably go into the firmware
         # update script instead of here, but that script doesn't have all the
         # tools available to make the necessary changes.
         SCRATCHDIR=$(mktemp -d /tmp/XXXXXX)
         cd $SCRATCHDIR
         # Note: This code only runs when we're autoupdating, so we know that
         # we're running from the newly updated partition. We need to use the
         # various firmware utilities from that partition too.
@@ skipping 254 matching lines @@
     echo "marking part $LEGACY_PART_NUM bootable (new)"
     "${INSTALL_ROOT}"/usr/bin/cgpt boot -i $LEGACY_PART_NUM ${ROOT_DEV} 2>&1
   else
     # The old gpt tool requires a -b arg to specify the PMBR bootcode. We don't
     # want to change the code, so we have to extract it, then put it back.
     dd if=${ROOT_DEV} bs=512 count=1 of=/tmp/oldpmbr.bin
     echo "marking part $LEGACY_PART_NUM bootable (old)"
     gpt -S boot -i $LEGACY_PART_NUM -b /tmp/oldpmbr.bin ${ROOT_DEV} 2>&1
   fi
 fi