1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
# Copyright (C) 2012 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Emit extra commands needed for Group during OTA installation
(installing the bootloader)."""
import struct
import common
def WriteIfwi(info):
info.script.AppendExtra('package_extract_file("ifwi.bin", "/tmp/ifwi.bin");')
info.script.AppendExtra("""fugu.flash_ifwi("/tmp/ifwi.bin");""")
def WriteDroidboot(info):
info.script.WriteRawImage("/fastboot", "droidboot.img")
def WriteSplashscreen(info):
info.script.WriteRawImage("/splashscreen", "splashscreen.img")
def WriteBootloader(info, bootloader):
header_fmt = "<8sHHI"
header_size = struct.calcsize(header_fmt)
magic, revision, reserved, reserved = struct.unpack(
header_fmt, bootloader[:header_size])
assert magic == "BOOTLDR!", "bootloader.img bad magic value"
if revision == 1:
offset = header_size;
header_v1_fmt = "II"
header_v1_size = struct.calcsize(header_v1_fmt)
ifwi_size, droidboot_size = struct.unpack(header_v1_fmt, bootloader[offset:offset + header_v1_size])
offset += header_v1_size
ifwi = bootloader[offset:offset + ifwi_size]
offset += ifwi_size
droidboot = bootloader[offset:]
common.ZipWriteStr(info.output_zip, "droidboot.img", droidboot)
common.ZipWriteStr(info.output_zip, "ifwi.bin", ifwi)
WriteIfwi(info)
WriteDroidboot(info)
return
offset = header_size;
while offset < len(bootloader):
c_header_fmt = "<8sIBBBB"
c_header_size = struct.calcsize(c_header_fmt)
c_magic, size, flags, _, _ , _ = struct.unpack(c_header_fmt, bootloader[offset:offset + c_header_size])
buf = bootloader[offset + c_header_size: offset + c_header_size + size]
offset += c_header_size + size
if not flags & 1:
continue
if c_magic == "IFWI!!!!":
common.ZipWriteStr(info.output_zip, "ifwi.bin", buf)
WriteIfwi(info);
continue
if c_magic == "DROIDBT!":
common.ZipWriteStr(info.output_zip, "droidboot.img", buf)
WriteDroidboot(info);
continue
if c_magic == "SPLASHS!":
common.ZipWriteStr(info.output_zip, "splashscreen.img", buf)
WriteSplashscreen(info);
continue
def FullOTA_InstallEnd(info):
try:
bootloader_img = info.input_zip.read("RADIO/bootloader.img")
except KeyError:
print "no bootloader.img in target_files; skipping install"
else:
WriteBootloader(info, bootloader_img)
def IncrementalOTA_InstallEnd(info):
try:
target_bootloader_img = info.target_zip.read("RADIO/bootloader.img")
try:
source_bootloader_img = info.source_zip.read("RADIO/bootloader.img")
except KeyError:
source_bootloader_img = None
if source_bootloader_img == target_bootloader_img:
print "bootloader unchanged; skipping"
else:
print "bootloader changed; adding it"
WriteBootloader(info, target_bootloader_img)
except KeyError:
print "no bootloader.img in target target_files; skipping install"
|
