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      1 # Copyright (C) 2009 The Android Open Source Project
      2 #
      3 # Licensed under the Apache License, Version 2.0 (the "License");
      4 # you may not use this file except in compliance with the License.
      5 # You may obtain a copy of the License at
      6 #
      7 #      http://www.apache.org/licenses/LICENSE-2.0
      8 #
      9 # Unless required by applicable law or agreed to in writing, software
     10 # distributed under the License is distributed on an "AS IS" BASIS,
     11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 # See the License for the specific language governing permissions and
     13 # limitations under the License.
     14 
     15 """Emit commands needed for Toro during OTA installation
     16 (installing the bootloader and radio images)."""
     17 
     18 import common
     19 
     20 def FullOTA_InstallEnd(info):
     21   try:
     22     bootloader_img = info.input_zip.read("RADIO/bootloader.img")
     23   except KeyError:
     24     print "no bootloader.img in target_files; skipping install"
     25   else:
     26     WriteBootloader(info, bootloader_img)
     27 
     28   # LTE Radio
     29   try:
     30     radio_img = info.input_zip.read("RADIO/radio.img")
     31   except KeyError:
     32     print "no radio.img in target_files; skipping install"
     33   else:
     34     WriteRadioLte(info, radio_img)
     35 
     36   # CDMA Radio
     37   try:
     38     radio_cdma_img = info.input_zip.read("RADIO/radio-cdma.img")
     39   except KeyError:
     40     print "no radio.img in target_files; skipping install"
     41   else:
     42     WriteRadioCdma(info, radio_cdma_img)
     43 
     44 def IncrementalOTA_VerifyEnd(info):
     45   try:
     46     target_radio_img = info.target_zip.read("RADIO/radio.img")
     47     source_radio_img = info.source_zip.read("RADIO/radio.img")
     48   except KeyError:
     49     # No source or target radio. Nothing to verify
     50     pass
     51   else:
     52     if source_radio_img != target_radio_img:
     53       info.script.CacheFreeSpaceCheck(len(source_radio_img))
     54       radio_type, radio_device = common.GetTypeAndDevice("/radio", info.info_dict)
     55       info.script.PatchCheck("%s:%s:%d:%s:%d:%s" % (
     56           radio_type, radio_device,
     57           len(source_radio_img), common.sha1(source_radio_img).hexdigest(),
     58           len(target_radio_img), common.sha1(target_radio_img).hexdigest()))
     59 
     60 def IncrementalOTA_InstallEnd(info):
     61   try:
     62     target_bootloader_img = info.target_zip.read("RADIO/bootloader.img")
     63     try:
     64       source_bootloader_img = info.source_zip.read("RADIO/bootloader.img")
     65     except KeyError:
     66       source_bootloader_img = None
     67 
     68     if source_bootloader_img == target_bootloader_img:
     69       print "bootloader unchanged; skipping"
     70     else:
     71       WriteBootloader(info, target_bootloader_img)
     72   except KeyError:
     73     print "no bootloader.img in target target_files; skipping install"
     74 
     75   # LTE Radio
     76   try:
     77     target_radio_img = info.target_zip.read("RADIO/radio.img")
     78     try:
     79       source_radio_img = info.source_zip.read("RADIO/radio.img")
     80     except KeyError:
     81       source_radio_img = None
     82 
     83     WriteRadioLte(info, target_radio_img, source_radio_img)
     84   except KeyError:
     85     print "no radio.img in target target_files; skipping install"
     86 
     87   # CDMA Radio
     88   try:
     89     target_radio_cdma_img = info.target_zip.read("RADIO/radio-cdma.img")
     90     try:
     91       source_radio_cdma_img = info.source_zip.read("RADIO/radio-cdma.img")
     92     except KeyError:
     93       source_radio_cdma_img = None
     94 
     95     if source_radio_cdma_img == target_radio_cdma_img:
     96       print "radio-cdma unchanged; skipping"
     97     else:
     98       WriteRadioCdma(info, target_radio_cdma_img)
     99   except KeyError:
    100     print "no radio-cdma.img in target target_files; skipping install"
    101 
    102 def WriteBootloader(info, bootloader_img):
    103   common.ZipWriteStr(info.output_zip, "bootloader.img", bootloader_img)
    104   fstab = info.info_dict["fstab"]
    105 
    106   info.script.Print("Writing bootloader...")
    107   info.script.AppendExtra('''assert(samsung.write_bootloader(
    108     package_extract_file("bootloader.img"), "%s", "%s"));''' % \
    109     (fstab["/xloader"].device, fstab["/sbl"].device))
    110 
    111 def WriteRadioLte(info, target_radio_img, source_radio_img=None):
    112   tf = common.File("radio.img", target_radio_img)
    113   if source_radio_img is None:
    114     tf.AddToZip(info.output_zip)
    115     info.script.Print("Writing LTE radio...")
    116     info.script.WriteRawImage("/radio", tf.name)
    117   else:
    118     sf = common.File("radio.img", source_radio_img);
    119     if tf.sha1 == sf.sha1:
    120       print "LTE radio image unchanged; skipping"
    121     else:
    122       diff = common.Difference(tf, sf)
    123       common.ComputeDifferences([diff])
    124       _, _, d = diff.GetPatch()
    125       if d is None or len(d) > tf.size * common.OPTIONS.patch_threshold:
    126         # computing difference failed, or difference is nearly as
    127         # big as the target:  simply send the target.
    128         tf.AddToZip(info.output_zip)
    129         info.script.Print("Writing LTE radio...")
    130         info.script.WriteRawImage("/radio", tf.name)
    131       else:
    132         common.ZipWriteStr(info.output_zip, "radio.img.p", d)
    133         info.script.Print("Patching LTE radio...")
    134         radio_type, radio_device = common.GetTypeAndDevice("/radio", info.info_dict)
    135         info.script.ApplyPatch(
    136             "%s:%s:%d:%s:%d:%s" % (radio_type, radio_device,
    137                                    sf.size, sf.sha1, tf.size, tf.sha1),
    138             "-", tf.size, tf.sha1, sf.sha1, "radio.img.p")
    139 
    140 def WriteRadioCdma(info, radio_cdma_img):
    141   common.ZipWriteStr(info.output_zip, "radio-cdma.img", radio_cdma_img)
    142   info.script.Print("Writing CDMA radio...")
    143   info.script.AppendExtra('''assert(samsung.update_cdma_modem(
    144     package_extract_file("radio-cdma.img")));''')
    145