blob: ecaba8e9655ed1e49b03ddbf54d72a9a4befda9f (
plain)
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
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
#!/bin/sh
#
# Licensed under the terms of the GNU GPL License version 2 or later.
#
# Author: Peter Tyser <ptyser@xes-inc.com>
#
# U-Boot firmware supports the booting of images in the Flattened Image
# Tree (FIT) format. The FIT format uses a device tree structure to
# describe a kernel image, device tree blob, ramdisk, etc. This script
# creates an Image Tree Source (.its file) which can be passed to the
# 'mkimage' utility to generate an Image Tree Blob (.itb file). The .itb
# file can then be booted by U-Boot (or other bootloaders which support
# FIT images). See doc/uImage.FIT/howto.txt in U-Boot source code for
# additional information on FIT images.
#
usage() {
printf "Usage: %s -A arch -C comp -a addr -e entry" "$(basename "$0")"
printf " -v version -k kernel [-D name -n address -d dtb] -o its_file"
printf "\n\t-A ==> set architecture to 'arch'"
printf "\n\t-C ==> set compression type 'comp'"
printf "\n\t-c ==> set config name 'config'"
printf "\n\t-a ==> set load address to 'addr' (hex)"
printf "\n\t-e ==> set entry point to 'entry' (hex)"
printf "\n\t-f ==> set device tree compatible string"
printf "\n\t-i ==> include initrd Blob 'initrd'"
printf "\n\t-v ==> set kernel version to 'version'"
printf "\n\t-k ==> include kernel image 'kernel'"
printf "\n\t-D ==> human friendly Device Tree Blob 'name'"
printf "\n\t-n ==> fdt unit-address 'address'"
printf "\n\t-d ==> include Device Tree Blob 'dtb'"
printf "\n\t-r ==> include RootFS blob 'rootfs'"
printf "\n\t-H ==> specify hash algo instead of SHA1"
printf "\n\t-o ==> create output file 'its_file'\n"
exit 1
}
FDTNUM=1
ROOTFSNUM=1
INITRDNUM=1
HASH=sha1
LOADABLES=
while getopts ":A:a:c:C:D:d:e:f:i:k:n:o:v:r:S" OPTION
do
case $OPTION in
A ) ARCH=$OPTARG;;
a ) LOAD_ADDR=$OPTARG;;
c ) CONFIG=$OPTARG;;
C ) COMPRESS=$OPTARG;;
D ) DEVICE=$OPTARG;;
d ) DTB=$OPTARG;;
e ) ENTRY_ADDR=$OPTARG;;
f ) COMPATIBLE=$OPTARG;;
i ) INITRD=$OPTARG;;
k ) KERNEL=$OPTARG;;
n ) FDTNUM=$OPTARG;;
o ) OUTPUT=$OPTARG;;
r ) ROOTFS=$OPTARG;;
S ) HASH=$OPTARG;;
v ) VERSION=$OPTARG;;
* ) echo "Invalid option passed to '$0' (options:$*)"
usage;;
esac
done
# Make sure user entered all required parameters
if [ -z "${ARCH}" ] || [ -z "${COMPRESS}" ] || [ -z "${LOAD_ADDR}" ] || \
[ -z "${ENTRY_ADDR}" ] || [ -z "${VERSION}" ] || [ -z "${KERNEL}" ] || \
[ -z "${OUTPUT}" ] || [ -z "${CONFIG}" ]; then
usage
fi
ARCH_UPPER=$(echo "$ARCH" | tr '[:lower:]' '[:upper:]')
if [ -n "${COMPATIBLE}" ]; then
COMPATIBLE_PROP="compatible = \"${COMPATIBLE}\";"
fi
# Conditionally create fdt information
if [ -n "${DTB}" ]; then
FDT_NODE="
fdt@$FDTNUM {
description = \"${ARCH_UPPER} OpenWrt ${DEVICE} device tree blob\";
${COMPATIBLE_PROP}
data = /incbin/(\"${DTB}\");
type = \"flat_dt\";
arch = \"${ARCH}\";
compression = \"none\";
hash@1 {
algo = \"crc32\";
};
hash@2 {
algo = \"${HASH}\";
};
};
"
FDT_PROP="fdt = \"fdt@$FDTNUM\";"
fi
if [ -n "${INITRD}" ]; then
INITRD_NODE="
initrd@$INITRDNUM {
description = \"${ARCH_UPPER} OpenWrt ${DEVICE} initrd\";
${COMPATIBLE_PROP}
data = /incbin/(\"${INITRD}\");
type = \"ramdisk\";
arch = \"${ARCH}\";
os = \"linux\";
hash@1 {
algo = \"crc32\";
};
hash@2 {
algo = \"${HASH}\";
};
};
"
INITRD_PROP="ramdisk=\"initrd@${INITRDNUM}\";"
fi
if [ -n "${ROOTFS}" ]; then
dd if="${ROOTFS}" of="${ROOTFS}.pagesync" bs=4096 conv=sync
ROOTFS_NODE="
rootfs@$ROOTFSNUM {
description = \"${ARCH_UPPER} OpenWrt ${DEVICE} rootfs\";
${COMPATIBLE_PROP}
data = /incbin/(\"${ROOTFS}.pagesync\");
type = \"filesystem\";
arch = \"${ARCH}\";
compression = \"none\";
hash@1 {
algo = \"crc32\";
};
hash@2 {
algo = \"${HASH}\";
};
};
"
LOADABLES="${LOADABLES:+$LOADABLES, }\"rootfs@${ROOTFSNUM}\""
fi
# Create a default, fully populated DTS file
DATA="/dts-v1/;
/ {
description = \"${ARCH_UPPER} OpenWrt FIT (Flattened Image Tree)\";
#address-cells = <1>;
images {
kernel@1 {
description = \"${ARCH_UPPER} OpenWrt Linux-${VERSION}\";
data = /incbin/(\"${KERNEL}\");
type = \"kernel\";
arch = \"${ARCH}\";
os = \"linux\";
compression = \"${COMPRESS}\";
load = <${LOAD_ADDR}>;
entry = <${ENTRY_ADDR}>;
hash@1 {
algo = \"crc32\";
};
hash@2 {
algo = \"$HASH\";
};
};
${INITRD_NODE}
${FDT_NODE}
${ROOTFS_NODE}
};
configurations {
default = \"${CONFIG}\";
${CONFIG} {
description = \"OpenWrt ${DEVICE}\";
kernel = \"kernel@1\";
${FDT_PROP}
${LOADABLES:+loadables = ${LOADABLES};}
${COMPATIBLE_PROP}
${INITRD_PROP}
};
};
};"
# Write .its file to disk
echo "$DATA" > "${OUTPUT}"
|
