blob: b32ec0eaed3c9a9c55f6ca21b44a01a40bdb784d (
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
|
#!/usr/bin/env sh
# script to automate extracting blobs from an existing vendor bios
# SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com>
# SPDX-FileCopyrightText: 2023 Leah Rowe <leah@libreboot.org>
# SPDX-License-Identifier: GPL-3.0-only
sname=""
board=""
vendor_rom=""
cbdir="coreboot/default"
cbcfgsdir="resources/coreboot"
ifdtool="${cbdir}/util/ifdtool/ifdtool"
mecleaner="me_cleaner/me_cleaner.py"
me7updateparser="resources/blobs/me7_update_parser.py"
boarddir=""
CONFIG_HAVE_MRC=""
CONFIG_ME_BIN_PATH=""
CONFIG_GBE_BIN_PATH=""
CONFIG_IFD_BIN_PATH=""
_me_destination=""
_gbe_destination=""
_ifd_destination=""
main()
{
sname=${0}
if [ $# -lt 2 ]; then
fail "Missing arguments (less than two)."
fi
board="${1}"
vendor_rom="${2}"
boarddir="${cbcfgsdir}/${board}"
check_board
build_dependencies
extract_blobs
}
check_board()
{
if [ ! -f "${vendor_rom}" ] ; then
fail "file does not exist: ${vendor_rom}"
elif [ ! -d "${boarddir}" ]; then
fail "build/roms ${board}: target not defined"
elif [ ! -f "${boarddir}/board.cfg" ]; then
fail "build/roms ${board}: missing board.cfg"
fi
}
build_dependencies()
{
if [ ! -d me_cleaner ]; then
printf "downloading me_cleaner\n"
./download me_cleaner || fail 'could not download me_cleaner'
else
printf "me_cleaner already downloaded. Skipping.\n"
printf "run ./download me_cleaner to manually overwrite\n"
fi
if [ ! -d ${cbdir} ]; then
printf "downloading coreboot\n"
./download coreboot default \
|| fail "could not download coreboot"
else
printf "coreboot already downloaded. Skipping.\n"
printf "run ./download coreboot to manually overwrite\n"
fi
if ! [ -f ${ifdtool} ]; then
printf "building ifdtool from coreboot\n"
make -C "${ifdtool%/ifdtool}" \
|| fail "could not build ifdtool"
fi
}
extract_blobs()
{
printf "extracting blobs for %s from %s\n" ${board} ${vendor_rom}
set -- "${boarddir}/config/"*
. ${1} 2>/dev/null
. "${boarddir}/board.cfg"
if [ "$CONFIG_HAVE_MRC" = "y" ]; then
printf 'haswell board detected, downloading mrc\n'
./download mrc || fail "could not download mrc"
fi
_me_destination=${CONFIG_ME_BIN_PATH#../../}
_gbe_destination=${CONFIG_GBE_BIN_PATH#../../}
_ifd_destination=${CONFIG_IFD_BIN_PATH#../../}
extract_blob_intel_me
extract_blob_intel_gbe_nvm
# Cleans up other files extracted with ifdtool
rm -f flashregion*.bin 2> /dev/null
if [ -f ${_ifd_destination} ]; then
printf "gbe, ifd, and me extracted to %s\n" \
${_me_destination%/*}
else
printf "WARNING: Intel firmware descriptor could not "
printf "be extracted with modified me\n"
fi
}
extract_blob_intel_me()
{
printf "extracting clean ime and modified ifd\n"
${mecleaner} -D ${_ifd_destination} \
-M ${_me_destination} ${vendor_rom} -t -r -S \
|| ${me7updateparser} \
-O ${_me_destination} ${vendor_rom} \
|| fail \
"me_cleaner failed to extract blobs from rom"
}
extract_blob_intel_gbe_nvm()
{
printf "extracting gigabit ethernet firmware"
./${ifdtool} -x ${vendor_rom}
mv flashregion*gbe.bin ${_gbe_destination} \
|| fail 'could not extract gbe'
}
fail()
{
print_help
printf "\n%s: ERROR: %s\n" ${sname} $@
exit 1
}
print_help()
{
printf "Usage: ./blobutil extract {boardname} {path/to/vendor_rom}\n"
printf "Example: ./blobutil extract x230 12mb_flash.bin\n"
printf "\nYou need to specify exactly 2 arguments\n"
}
main $@
|
