Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
Newer
Older
100644 122 lines (106 sloc) 4.542 kB
1f13e5f Initial 4.2 upload.
Steve Spear authored
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 Prime 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 try:
29 radio_img = info.input_zip.read("RADIO/radio.img")
30 except KeyError:
31 print "no radio.img in target_files; skipping install"
32 else:
33 WriteRadio(info, radio_img)
34
35 FsSizeFix(info)
36
37 def IncrementalOTA_VerifyEnd(info):
38 try:
39 target_radio_img = info.target_zip.read("RADIO/radio.img")
40 source_radio_img = info.source_zip.read("RADIO/radio.img")
41 except KeyError:
42 # No source or target radio. Nothing to verify
43 pass
44 else:
45 if source_radio_img != target_radio_img:
46 info.script.CacheFreeSpaceCheck(len(source_radio_img))
47 radio_type, radio_device = common.GetTypeAndDevice("/radio", info.info_dict)
48 info.script.PatchCheck("%s:%s:%d:%s:%d:%s" % (
49 radio_type, radio_device,
50 len(source_radio_img), common.sha1(source_radio_img).hexdigest(),
51 len(target_radio_img), common.sha1(target_radio_img).hexdigest()))
52
53 def IncrementalOTA_InstallEnd(info):
54 try:
55 target_bootloader_img = info.target_zip.read("RADIO/bootloader.img")
56 try:
57 source_bootloader_img = info.source_zip.read("RADIO/bootloader.img")
58 except KeyError:
59 source_bootloader_img = None
60
61 if source_bootloader_img == target_bootloader_img:
62 print "bootloader unchanged; skipping"
63 else:
64 WriteBootloader(info, target_bootloader_img)
65 except KeyError:
66 print "no bootloader.img in target target_files; skipping install"
67
68 try:
69 target_radio_img = info.target_zip.read("RADIO/radio.img")
70 try:
71 source_radio_img = info.source_zip.read("RADIO/radio.img")
72 except KeyError:
73 source_radio_img = None
74
75 WriteRadio(info, target_radio_img, source_radio_img)
76 except KeyError:
77 print "no radio.img in target target_files; skipping install"
78
79 FsSizeFix(info)
80
81 def FsSizeFix(info):
82 info.script.Print("Fixing fs_size in crypto footer...")
83 info.script.AppendExtra('''assert(samsung.fs_size_fix());''')
84
85 def WriteBootloader(info, bootloader_img):
86 common.ZipWriteStr(info.output_zip, "bootloader.img", bootloader_img)
87 fstab = info.info_dict["fstab"]
88
89 info.script.Print("Writing bootloader...")
90 info.script.AppendExtra('''assert(samsung.write_bootloader(
91 package_extract_file("bootloader.img"), "%s", "%s"));''' % \
92 (fstab["/xloader"].device, fstab["/sbl"].device))
93
94 def WriteRadio(info, target_radio_img, source_radio_img=None):
95 tf = common.File("radio.img", target_radio_img)
96 if source_radio_img is None:
97 tf.AddToZip(info.output_zip)
98 info.script.Print("Writing radio...")
99 info.script.WriteRawImage("/radio", tf.name)
100 else:
101 sf = common.File("radio.img", source_radio_img);
102 if tf.sha1 == sf.sha1:
103 print "radio image unchanged; skipping"
104 else:
105 diff = common.Difference(tf, sf, diff_program="bsdiff")
106 common.ComputeDifferences([diff])
107 _, _, d = diff.GetPatch()
108 if d is None or len(d) > tf.size * common.OPTIONS.patch_threshold:
109 # computing difference failed, or difference is nearly as
110 # big as the target: simply send the target.
111 tf.AddToZip(info.output_zip)
112 info.script.Print("Writing radio...")
113 info.script.WriteRawImage("/radio", tf.name)
114 else:
115 common.ZipWriteStr(info.output_zip, "radio.img.p", d)
116 info.script.Print("Patching radio...")
117 radio_type, radio_device = common.GetTypeAndDevice("/radio", info.info_dict)
118 info.script.ApplyPatch(
119 "%s:%s:%d:%s:%d:%s" % (radio_type, radio_device,
120 sf.size, sf.sha1, tf.size, tf.sha1),
121 "-", tf.size, tf.sha1, sf.sha1, "radio.img.p")
Something went wrong with that request. Please try again.