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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
|
#!/bin/sh
## live-build(7) - System Build Scripts
## Copyright (C) 2016-2020 The Debian Live team
## Copyright (C) 2016 Adrian Gibanel Lopez <adrian15sgd@gmail.com>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.
set -e
# Including common functions
[ -e "${LIVE_BUILD}/scripts/build.sh" ] && . "${LIVE_BUILD}/scripts/build.sh" || . /usr/lib/live/build.sh
# Setting static variables
DESCRIPTION="Prepares and installs Grub based EFI support into binary"
USAGE="${PROGRAM} [--force]"
# Processing arguments and configuration files
Init_config_data "${@}"
if [ "${LB_BOOTLOADER_EFI}" != "grub-efi" ]; then
exit 0
fi
if In_list "${LB_IMAGE_TYPE}" hdd netboot; then
exit 0
fi
Echo_message "Begin preparing Grub based EFI support..."
# NOTE: We rely on `binary_grub_cfg` to generate grub.cfg and other configuration files!
# Requiring stage file
Require_stagefiles config bootstrap
# Checking stage file
Check_stagefile
# Acquire lock file
Acquire_lockfile
# Check architecture
Check_architectures amd64 i386 arm64 armhf
Check_crossarchitectures
# Checking depends
case "${LB_ARCHITECTURE}" in
amd64|i386)
Check_package chroot /usr/lib/grub/x86_64-efi/configfile.mod grub-efi-amd64-bin
Check_package chroot /usr/lib/grub/i386-efi/configfile.mod grub-efi-ia32-bin
;;
arm64)
Check_package chroot /usr/lib/grub/arm64-efi/configfile.mod grub-efi-arm64-bin
;;
armhf)
Check_package chroot /usr/lib/grub/arm-efi/configfile.mod grub-efi-arm-bin
;;
esac
Check_package chroot /usr/bin/grub-mkimage grub-common
Check_package chroot /usr/bin/mcopy mtools
Check_package chroot /sbin/mkfs.msdos dosfstools
# Check UEFI Secure Boot setting and depends
# By default (auto) do a best-effort build: if the signed binaries are available use
# them, but don't fail if they are not, just print a warning.
case "${LB_ARCHITECTURE}" in
amd64|i386)
_SB_EFI_PLATFORM="x86_64"
_SB_EFI_NAME="x64"
_SB_EFI_DEB="amd64"
;;
arm64)
_SB_EFI_PLATFORM="arm64"
_SB_EFI_NAME="aa64"
_SB_EFI_DEB="arm64"
;;
armhf)
_SB_EFI_PLATFORM="arm"
_SB_EFI_NAME="arm"
_SB_EFI_DEB="arm"
;;
esac
_PRE_SB_PACKAGES="${_LB_PACKAGES}"
_LB_PACKAGES="shim-signed grub-efi-${_SB_EFI_DEB}-signed"
case "${LB_UEFI_SECURE_BOOT}" in
auto)
# Use Check_installed, as Check_package will error out immediately
set +e
Install_packages
set -e
Check_installed chroot /usr/lib/grub/${_SB_EFI_PLATFORM}-efi-signed/gcd${_SB_EFI_NAME}.efi.signed \
grub-efi-${_SB_EFI_DEB}-signed
_GRUB_INSTALL_STATUS="${INSTALL_STATUS}"
Check_installed chroot /usr/lib/shim/shim${_SB_EFI_NAME}.efi.signed \
shim-signed
if [ "${INSTALL_STATUS}" -ne 0 -o "${_GRUB_INSTALL_STATUS}" -ne 0 ]
then
Echo_warning "UEFI Secure Boot disabled due to missing signed Grub/Shim."
else
Echo_message "UEFI Secure Boot support enabled."
fi
;;
enable)
Check_package chroot /usr/lib/grub/${_SB_EFI_PLATFORM}-efi-signed/gcd${_SB_EFI_NAME}.efi.signed \
grub-efi-${_SB_EFI_DEB}-signed
Check_package chroot /usr/lib/shim/shim${_SB_EFI_NAME}.efi.signed \
shim-signed
Install_packages
Echo_message "UEFI Secure Boot support enabled."
;;
disable)
Echo_message "UEFI Secure Boot support disabled."
;;
esac
_LB_PACKAGES="${_PRE_SB_PACKAGES}"
# Restoring cache
Restore_package_cache binary
# Installing depends
Install_packages
# Cleanup files that we generate
rm -rf binary/boot/efi.img binary/boot/grub/i386-efi/ binary/boot/grub/x86_64-efi binary/boot/grub/arm64-efi binary/boot/grub/arm-efi
# This is workaround till both efi-image and grub-cpmodules are put into a binary package
case "${LB_BUILD_WITH_CHROOT}" in
true)
if [ ! -e "${LIVE_BUILD}" ] ; then
LIVE_BUILD_PATH="/usr/lib/live/build"
else
LIVE_BUILD_PATH="${LIVE_BUILD}/scripts/build"
fi
mkdir -p chroot/${LIVE_BUILD_PATH}
cp "${LIVE_BUILD_PATH}/efi-image" "chroot/${LIVE_BUILD_PATH}"
cp "${LIVE_BUILD_PATH}/grub-cpmodules" "chroot/${LIVE_BUILD_PATH}"
_CHROOT_DIR=""
;;
false)
_CHROOT_DIR="chroot"
;;
esac
#####
cat >binary.sh <<END
#!/bin/sh
set -e
gen_efi_boot_img(){
local platform="\$1"
local efi_name="\$2"
local netboot_prefix="\$3"
local outdir="grub-efi-temp-\${platform}"
"\${LIVE_BUILD_PATH}/efi-image" "${_CHROOT_DIR}/\$outdir" "\$platform" "\$efi_name" "\$netboot_prefix"
mkdir -p ${_CHROOT_DIR}/grub-efi-temp/EFI/boot
mcopy -n -i ${_CHROOT_DIR}/\$outdir/efi.img '::efi/boot/boot*.efi' ${_CHROOT_DIR}/grub-efi-temp/EFI/boot
cp -r "${_CHROOT_DIR}"/\$outdir/* "${_CHROOT_DIR}/grub-efi-temp/"
# Secure Boot support:
# - create the EFI directory in the ESP with uppercase letters to make
# certain firmwares (eg: TianoCore) happy
# - use shim as the boot<arch>.efi that gets loaded first by the firmware
# - drop a grub.cfg (same reason as below) in the cfg directory as configured
# by the signed grub efi binary creation. This is set dynamically when grub2 is
# built with the ouput of dpkg-vendor, and can be overridden by the builder, so
# we do the same here in live-build.
# - the source paths are taken from shim-signed:
# https://packages.debian.org/sid/amd64/shim-signed/filelist
# and grub-efi-amd64-signed, currently in Ubuntu:
# https://packages.ubuntu.com/xenial/amd64/grub-efi-amd64-signed/filelist
# https://packages.ubuntu.com/bionic/arm64/grub-efi-arm64-signed/filelist
# E.g., gcdx64.efi.signed is the boot loader for removable device, like CD or
# USB flash drive, while grubx64.efi.signed is for hard drive.
# Therefore here gcdx64.efi.signed is used for amd64 and gcdaa64.efi.signed is
# for arm64.
if [ -r ${_CHROOT_DIR}/usr/lib/grub/\$platform-signed/gcd\$efi_name.efi.signed -a \
-r ${_CHROOT_DIR}/usr/lib/shim/shim\$efi_name.efi.signed -a \
"${LB_UEFI_SECURE_BOOT}" != "disable" ]; then
cp ${_CHROOT_DIR}/usr/lib/grub/\$platform-signed/gcd\$efi_name.efi.signed \
${_CHROOT_DIR}/grub-efi-temp/EFI/boot/grub\$efi_name.efi
cp ${_CHROOT_DIR}/usr/lib/shim/shim\$efi_name.efi.signed \
${_CHROOT_DIR}/grub-efi-temp/EFI/boot/boot\$efi_name.efi
fi
}
PRE_EFI_IMAGE_PATH="${PATH}"
if [ ! -e "${LIVE_BUILD}" ] ; then
LIVE_BUILD_PATH="/usr/lib/live/build"
else
LIVE_BUILD_PATH="${LIVE_BUILD}/scripts/build"
fi
PATH="${PATH}:\${LIVE_BUILD_PATH}" # Make sure grub-cpmodules is used as if it was installed in the system
case "${LB_ARCHITECTURE}" in
amd64|i386)
gen_efi_boot_img "x86_64-efi" "x64" "debian-live/amd64"
gen_efi_boot_img "i386-efi" "ia32" "debian-live/i386"
PATH="\${PRE_EFI_IMAGE_PATH}"
;;
arm64)
gen_efi_boot_img "arm64-efi" "aa64" "debian-live/arm64"
PATH="\${PRE_EFI_IMAGE_PATH}"
;;
armhf)
gen_efi_boot_img "arm-efi" "arm" "debian-live/arm"
PATH="\${PRE_EFI_IMAGE_PATH}"
;;
esac
# On some platforms the EFI grub image will be loaded, so grub's root
# variable will be set to the EFI partition. This means that grub will
# look in that partition for a grub.cfg file, and even if it finds it
# it will not be able to find the vmlinuz and initrd.
# Drop a minimal grub.cfg in the EFI partition that sets the root and prefix
# to whatever partition holds the /.disk/info file, and load the grub
# config from that same partition.
mkdir -p ${_CHROOT_DIR}/grub-efi-temp-cfg
cat >${_CHROOT_DIR}/grub-efi-temp-cfg/grub.cfg <<EOF
search --set=root --file /.disk/info
set prefix=(\\\$root)/boot/grub
configfile (\\\$root)/boot/grub/grub.cfg
EOF
# The code below is adapted from tools/boot/jessie/boot-x86
# in debian-cd
# Stuff the EFI boot files into a FAT filesystem, making it as
# small as possible. 24KiB headroom seems to be enough;
# (x+31)/32*32 rounds up to multiple of 32.
# This is the same as in efi-image, but we need to redo it here in
# the case of a multi-arch amd64/i386 image
size=0
for file in ${_CHROOT_DIR}/grub-efi-temp/EFI/boot/*.efi \
${_CHROOT_DIR}/grub-efi-temp-cfg/grub.cfg; do
size=\$((\$size + \$(stat -c %s "\$file")))
done
# directories: EFI EFI/boot boot boot/grub
size=\$((\$size + 4096 * 4))
blocks=\$(((\$size / 1024 + 55) / 32 * 32 ))
rm -f ${_CHROOT_DIR}/grub-efi-temp/boot/grub/efi.img
mkfs.msdos -C "${_CHROOT_DIR}/grub-efi-temp/boot/grub/efi.img" \$blocks >/dev/null
mmd -i "${_CHROOT_DIR}/grub-efi-temp/boot/grub/efi.img" ::EFI
mmd -i "${_CHROOT_DIR}/grub-efi-temp/boot/grub/efi.img" ::EFI/boot
mcopy -o -i "${_CHROOT_DIR}/grub-efi-temp/boot/grub/efi.img" ${_CHROOT_DIR}/grub-efi-temp/EFI/boot/*.efi \
"::EFI/boot"
mmd -i "${_CHROOT_DIR}/grub-efi-temp/boot/grub/efi.img" ::boot
mmd -i "${_CHROOT_DIR}/grub-efi-temp/boot/grub/efi.img" ::boot/grub
mcopy -o -i "${_CHROOT_DIR}/grub-efi-temp/boot/grub/efi.img" ${_CHROOT_DIR}/grub-efi-temp-cfg/grub.cfg \
"::boot/grub"
END
case "${LB_BUILD_WITH_CHROOT}" in
true)
mv binary.sh chroot/
Chroot chroot "sh binary.sh"
rm -f chroot/binary.sh
# Saving cache
Save_package_cache binary
# Removing depends
Remove_package
;;
false)
sh binary.sh
rm -f binary.sh
;;
esac
# Remove unnecessary files
rm -f chroot/grub-efi-temp/bootnetia32.efi
rm -f chroot/grub-efi-temp/bootnetx64.efi
rm -f chroot/grub-efi-temp/bootnetaa64.efi
rm -f chroot/grub-efi-temp/bootnetarm.efi
mkdir -p binary
cp -r chroot/grub-efi-temp/* binary/
rm -rf chroot/grub-efi-temp-x86_64-efi
rm -rf chroot/grub-efi-temp-i386-efi
rm -rf chroot/grub-efi-temp-arm64-efi
rm -rf chroot/grub-efi-temp-arm-efi
rm -rf chroot/grub-efi-temp-cfg
rm -rf chroot/grub-efi-temp
# Creating stage file
Create_stagefile
|
