blob: 2e00d9f9289f663b1349d1039774f99eadf4f756 (
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
|
# SPDX-License-Identifier: GPL-2.0-only
# Logic based on util/chromeos/crosfirmware.sh in coreboot cfc26ce278.
# Modifications in this version are Copyright 2021, 2023 and 2024 Leah Rowe.
# Original copyright detailed in repo: https://review.coreboot.org/coreboot/
eval `setvars "" MRC_url MRC_url_bkup MRC_hash MRC_board SHELLBALL`
extract_mrc()
{
chkvars "MRC_board" "CONFIG_MRC_FILE"
SHELLBALL="chromeos-firmwareupdate-$MRC_board"
(
x_ cd "$appdir"
extract_partition "${MRC_url##*/}"
extract_archive "$SHELLBALL" .
) || $err "mrc download/extract failure"
"$cbfstool" "$appdir/"bios.bin extract -n mrc.bin \
-f "$_dest" -r RO_SECTION || $err "extract_mrc: !$cbfstool $_dest"
[ -n "$CONFIG_REFCODE_BLOB_FILE" ] && extract_refcode; return 0
}
extract_partition()
{
printf "Extracting ROOT-A partition\n"
ROOTP=$( printf "unit\nB\nprint\nquit\n" | \
parted "${1%.zip}" 2>/dev/null | grep "ROOT-A" )
START=$(( $( echo $ROOTP | cut -f2 -d\ | tr -d "B" ) ))
SIZE=$(( $( echo $ROOTP | cut -f4 -d\ | tr -d "B" ) ))
dd if="${1%.zip}" of="root-a.ext2" bs=1024 skip=$(( $START / 1024 )) \
count=$(( $SIZE / 1024 )) || $err "ex dd ${1%.zip}, root-a.ext2"
printf "cd /usr/sbin\ndump chromeos-firmwareupdate $SHELLBALL\nquit" \
| debugfs "root-a.ext2" || $err "can't extract shellball"
}
extract_refcode()
{
_refdest="${CONFIG_REFCODE_BLOB_FILE##*../}"
e "$_refdest" f && return 0
# cbfstool changed the attributes scheme for stage files,
# incompatible with older versions before coreboot 4.14,
# so we need coreboot 4.13 cbfstool for certain refcode files
chkvars cbfstoolref
mkdir -p "${_refdest%/*}" || $err "ref: !mkdir -p ${_refdest%/*}"
"$cbfstoolref" "$appdir/bios.bin" extract \
-m x86 -n fallback/refcode -f "$_refdest" -r RO_SECTION \
|| $err "extract_refcode $board: !cbfstoolref $_refdest"
# enable the Intel GbE device, if told by offset MRC_refcode_gbe
[ -z "$MRC_refcode_gbe" ] || dd if="config/ifd/hp820g2/1.bin" \
of="$_refdest" bs=1 seek=$MRC_refcode_gbe count=1 conv=notrunc || \
$err "extract_refcode $_refdest: byte $MRC_refcode_gbe"; return 0
}
|
