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
|
# Copyright (C) 2004, Advanced Micro Devices, Inc. All Rights Reserved
# Released under the MIT license (see packages/COPYING)
# Creates a bootable image using syslinux, your kernel and an optional
# initrd
#
# End result is two things:
#
# 1. A .hddimg file which is an msdos filesystem containing syslinux, a kernel,
# an initrd and a rootfs image. These can be written to harddisks directly and
# also booted on USB flash disks (write them there with dd).
#
# 2. A CD .iso image
# Boot process is that the initrd will boot and process which label was selected
# in syslinux. Actions based on the label are then performed (e.g. installing to
# an hdd)
# External variables (also used by syslinux.bbclass)
# ${INITRD} - indicates a list of filesystem images to concatenate and use as an initrd (optional)
# ${HDDIMG_ID} - FAT image volume-id
# ${ROOTFS} - indicates a filesystem image to include as the root filesystem (optional)
inherit live-vm-common image-artifact-names
do_bootimg[depends] += "dosfstools-native:do_populate_sysroot \
mtools-native:do_populate_sysroot \
cdrtools-native:do_populate_sysroot \
virtual/kernel:do_deploy \
${MLPREFIX}syslinux:do_populate_sysroot \
syslinux-native:do_populate_sysroot \
${@'%s:do_image_%s' % (d.getVar('PN'), d.getVar('LIVE_ROOTFS_TYPE').replace('-', '_')) if d.getVar('ROOTFS') else ''} \
"
LABELS_LIVE ?= "boot install"
ROOT_LIVE ?= "root=/dev/ram0"
INITRD_IMAGE_LIVE ?= "${MLPREFIX}core-image-minimal-initramfs"
INITRD_LIVE ?= "${DEPLOY_DIR_IMAGE}/${INITRD_IMAGE_LIVE}-${MACHINE}.${INITRAMFS_FSTYPES}"
LIVE_ROOTFS_TYPE ?= "ext4"
ROOTFS ?= "${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.${LIVE_ROOTFS_TYPE}"
IMAGE_TYPEDEP_live = "${LIVE_ROOTFS_TYPE}"
IMAGE_TYPEDEP_iso = "${LIVE_ROOTFS_TYPE}"
IMAGE_TYPEDEP_hddimg = "${LIVE_ROOTFS_TYPE}"
IMAGE_TYPES_MASKED += "live hddimg iso"
python() {
image_b = d.getVar('IMAGE_BASENAME')
initrd_i = d.getVar('INITRD_IMAGE_LIVE')
if image_b == initrd_i:
bb.error('INITRD_IMAGE_LIVE %s cannot use image live, hddimg or iso.' % initrd_i)
bb.fatal('Check IMAGE_FSTYPES and INITRAMFS_FSTYPES settings.')
elif initrd_i:
d.appendVarFlag('do_bootimg', 'depends', ' %s:do_image_complete' % initrd_i)
}
HDDDIR = "${S}/hddimg"
ISODIR = "${S}/iso"
EFIIMGDIR = "${S}/efi_img"
COMPACT_ISODIR = "${S}/iso.z"
ISOLINUXDIR ?= "/isolinux"
ISO_BOOTIMG = "isolinux/isolinux.bin"
ISO_BOOTCAT = "isolinux/boot.cat"
MKISOFS_OPTIONS = "-no-emul-boot -boot-load-size 4 -boot-info-table"
BOOTIMG_VOLUME_ID ?= "boot"
BOOTIMG_EXTRA_SPACE ?= "512"
populate_live() {
populate_kernel $1
if [ -s "${ROOTFS}" ]; then
install -m 0644 ${ROOTFS} $1/rootfs.img
fi
}
build_iso() {
# Only create an ISO if we have an INITRD and the live or iso image type was selected
if [ -z "${INITRD}" ] || [ "${@bb.utils.contains_any('IMAGE_FSTYPES', 'live iso', '1', '0', d)}" != "1" ]; then
bbnote "ISO image will not be created."
return
fi
# ${INITRD} is a list of multiple filesystem images
for fs in ${INITRD}
do
if [ ! -s "$fs" ]; then
bbwarn "ISO image will not be created. $fs is invalid."
return
fi
done
populate_live ${ISODIR}
if [ "${PCBIOS}" = "1" ]; then
syslinux_iso_populate ${ISODIR}
fi
if [ "${EFI}" = "1" ]; then
efi_iso_populate ${ISODIR}
build_fat_img ${EFIIMGDIR} ${ISODIR}/efi.img
fi
# EFI only
if [ "${PCBIOS}" != "1" ] && [ "${EFI}" = "1" ] ; then
# Work around bug in isohybrid where it requires isolinux.bin
# In the boot catalog, even though it is not used
mkdir -p ${ISODIR}/${ISOLINUXDIR}
install -m 0644 ${STAGING_DATADIR}/syslinux/isolinux.bin ${ISODIR}${ISOLINUXDIR}
fi
# We used to have support for zisofs; this is a relic of that
mkisofs_compress_opts="-r"
# Check the size of ${ISODIR}/rootfs.img, use mkisofs -iso-level 3
# when it exceeds 3.8GB, the specification is 4G - 1 bytes, we need
# leave a few space for other files.
mkisofs_iso_level=""
if [ -n "${ROOTFS}" ] && [ -s "${ROOTFS}" ]; then
rootfs_img_size=`stat -c '%s' ${ISODIR}/rootfs.img`
# 4080218931 = 3.8 * 1024 * 1024 * 1024
if [ $rootfs_img_size -gt 4080218931 ]; then
bbnote "${ISODIR}/rootfs.img execeeds 3.8GB, using '-iso-level 3' for mkisofs"
mkisofs_iso_level="-iso-level 3"
fi
fi
if [ "${PCBIOS}" = "1" ] && [ "${EFI}" != "1" ] ; then
# PCBIOS only media
mkisofs -V ${BOOTIMG_VOLUME_ID} \
-o ${IMGDEPLOYDIR}/${IMAGE_NAME}.iso \
-b ${ISO_BOOTIMG} -c ${ISO_BOOTCAT} \
$mkisofs_compress_opts \
${MKISOFS_OPTIONS} $mkisofs_iso_level ${ISODIR}
else
# EFI only OR EFI+PCBIOS
mkisofs -A ${BOOTIMG_VOLUME_ID} -V ${BOOTIMG_VOLUME_ID} \
-o ${IMGDEPLOYDIR}/${IMAGE_NAME}.iso \
-b ${ISO_BOOTIMG} -c ${ISO_BOOTCAT} \
$mkisofs_compress_opts ${MKISOFS_OPTIONS} $mkisofs_iso_level \
-eltorito-alt-boot -eltorito-platform efi \
-b efi.img -no-emul-boot \
${ISODIR}
isohybrid_args="-u"
fi
isohybrid $isohybrid_args ${IMGDEPLOYDIR}/${IMAGE_NAME}.iso
}
build_fat_img() {
FATSOURCEDIR=$1
FATIMG=$2
# Calculate the size required for the final image including the
# data and filesystem overhead.
# Sectors: 512 bytes
# Blocks: 1024 bytes
# Determine the sector count just for the data
SECTORS=$(expr $(du --apparent-size -ks ${FATSOURCEDIR} | cut -f 1) \* 2)
# Account for the filesystem overhead. This includes directory
# entries in the clusters as well as the FAT itself.
# Assumptions:
# FAT32 (12 or 16 may be selected by mkdosfs, but the extra
# padding will be minimal on those smaller images and not
# worth the logic here to caclulate the smaller FAT sizes)
# < 16 entries per directory
# 8.3 filenames only
# 32 bytes per dir entry
DIR_BYTES=$(expr $(find ${FATSOURCEDIR} | tail -n +2 | wc -l) \* 32)
# 32 bytes for every end-of-directory dir entry
DIR_BYTES=$(expr $DIR_BYTES + $(expr $(find ${FATSOURCEDIR} -type d | tail -n +2 | wc -l) \* 32))
# 4 bytes per FAT entry per sector of data
FAT_BYTES=$(expr $SECTORS \* 4)
# 4 bytes per FAT entry per end-of-cluster list
FAT_BYTES=$(expr $FAT_BYTES + $(expr $(find ${FATSOURCEDIR} -type d | tail -n +2 | wc -l) \* 4))
# Use a ceiling function to determine FS overhead in sectors
DIR_SECTORS=$(expr $(expr $DIR_BYTES + 511) / 512)
# There are two FATs on the image
FAT_SECTORS=$(expr $(expr $(expr $FAT_BYTES + 511) / 512) \* 2)
SECTORS=$(expr $SECTORS + $(expr $DIR_SECTORS + $FAT_SECTORS))
# Determine the final size in blocks accounting for some padding
BLOCKS=$(expr $(expr $SECTORS / 2) + ${BOOTIMG_EXTRA_SPACE})
# mkdosfs will sometimes use FAT16 when it is not appropriate,
# resulting in a boot failure from SYSLINUX. Use FAT32 for
# images larger than 512MB, otherwise let mkdosfs decide.
if [ $(expr $BLOCKS / 1024) -gt 512 ]; then
FATSIZE="-F 32"
fi
# mkdosfs will fail if ${FATIMG} exists. Since we are creating an
# new image, it is safe to delete any previous image.
if [ -e ${FATIMG} ]; then
rm ${FATIMG}
fi
if [ -z "${HDDIMG_ID}" ]; then
mkdosfs ${FATSIZE} -n ${BOOTIMG_VOLUME_ID} ${MKDOSFS_EXTRAOPTS} -C ${FATIMG} \
${BLOCKS}
else
mkdosfs ${FATSIZE} -n ${BOOTIMG_VOLUME_ID} ${MKDOSFS_EXTRAOPTS} -C ${FATIMG} \
${BLOCKS} -i ${HDDIMG_ID}
fi
# Copy FATSOURCEDIR recursively into the image file directly
mcopy -i ${FATIMG} -s ${FATSOURCEDIR}/* ::/
}
build_hddimg() {
# Create an HDD image
if [ "${@bb.utils.contains_any('IMAGE_FSTYPES', 'live hddimg', '1', '0', d)}" = "1" ] ; then
populate_live ${HDDDIR}
if [ "${PCBIOS}" = "1" ]; then
syslinux_hddimg_populate ${HDDDIR}
fi
if [ "${EFI}" = "1" ]; then
efi_hddimg_populate ${HDDDIR}
fi
# Check the size of ${HDDDIR}/rootfs.img, error out if it
# exceeds 4GB, it is the single file's max size of FAT fs.
if [ -f ${HDDDIR}/rootfs.img ]; then
rootfs_img_size=`stat -c '%s' ${HDDDIR}/rootfs.img`
max_size=`expr 4 \* 1024 \* 1024 \* 1024`
if [ $rootfs_img_size -ge $max_size ]; then
bberror "${HDDDIR}/rootfs.img rootfs size is greather than or equal to 4GB,"
bberror "and this doesn't work on a FAT filesystem. You can either:"
bberror "1) Reduce the size of rootfs.img, or,"
bbfatal "2) Use wic, vmdk,vhd, vhdx or vdi instead of hddimg\n"
fi
fi
build_fat_img ${HDDDIR} ${IMGDEPLOYDIR}/${IMAGE_NAME}.hddimg
if [ "${PCBIOS}" = "1" ]; then
syslinux_hddimg_install
fi
chmod 644 ${IMGDEPLOYDIR}/${IMAGE_NAME}.hddimg
fi
}
python do_bootimg() {
set_live_vm_vars(d, 'LIVE')
if d.getVar("PCBIOS") == "1":
bb.build.exec_func('build_syslinux_cfg', d)
if d.getVar("EFI") == "1":
bb.build.exec_func('build_efi_cfg', d)
bb.build.exec_func('build_hddimg', d)
bb.build.exec_func('build_iso', d)
bb.build.exec_func('create_symlinks', d)
}
do_bootimg[subimages] = "hddimg iso"
do_bootimg[imgsuffix] = "."
addtask bootimg before do_image_complete after do_rootfs
|
