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
|
# boot-directdisk.bbclass
# (loosly based off bootimg.bbclass Copyright (C) 2004, Advanced Micro Devices, Inc.)
#
# Create an image which can be placed directly onto a harddisk using dd and then
# booted.
#
# This uses syslinux. extlinux would have been nice but required the ext2/3
# partition to be mounted. grub requires to run itself as part of the install
# process.
#
# The end result is a 512 boot sector populated with an MBR and partition table
# followed by an msdos fat16 partition containing syslinux and a linux kernel
# completed by the ext2/3 rootfs.
#
# We have to push the msdos parition table size > 16MB so fat 16 is used as parted
# won't touch fat12 partitions.
# External variables needed
# ${ROOTFS} - the rootfs image to incorporate
do_bootdirectdisk[depends] += "dosfstools-native:do_populate_sysroot \
virtual/kernel:do_deploy \
syslinux:do_populate_sysroot \
syslinux-native:do_populate_sysroot \
parted-native:do_populate_sysroot \
mtools-native:do_populate_sysroot "
PACKAGES = " "
EXCLUDE_FROM_WORLD = "1"
BOOTDD_VOLUME_ID ?= "boot"
BOOTDD_EXTRA_SPACE ?= "16384"
EFI = "${@bb.utils.contains("MACHINE_FEATURES", "efi", "1", "0", d)}"
EFI_PROVIDER ?= "grub-efi"
EFI_CLASS = "${@bb.utils.contains("MACHINE_FEATURES", "efi", "${EFI_PROVIDER}", "", d)}"
# Include legacy boot if MACHINE_FEATURES includes "pcbios" or if it does not
# contain "efi". This way legacy is supported by default if neither is
# specified, maintaining the original behavior.
def pcbios(d):
pcbios = bb.utils.contains("MACHINE_FEATURES", "pcbios", "1", "0", d)
if pcbios == "0":
pcbios = bb.utils.contains("MACHINE_FEATURES", "efi", "0", "1", d)
return pcbios
def pcbios_class(d):
if d.getVar("PCBIOS", True) == "1":
return "syslinux"
return ""
PCBIOS = "${@pcbios(d)}"
PCBIOS_CLASS = "${@pcbios_class(d)}"
inherit ${PCBIOS_CLASS}
inherit ${EFI_CLASS}
# Get the build_syslinux_cfg() function from the syslinux class
AUTO_SYSLINUXCFG = "1"
DISK_SIGNATURE ?= "${DISK_SIGNATURE_GENERATED}"
SYSLINUX_ROOT ?= "root=UUID=<<uuid-of-rootfs>>"
SYSLINUX_TIMEOUT ?= "10"
IS_VM = '${@bb.utils.contains_any("IMAGE_FSTYPES", ["vmdk", "vdi", "qcow2"], "true", "false", d)}'
boot_direct_populate() {
dest=$1
install -d $dest
# Install bzImage, initrd, and rootfs.img in DEST for all loaders to use.
if [ -e ${DEPLOY_DIR_IMAGE}/bzImage ]; then
install -m 0644 ${DEPLOY_DIR_IMAGE}/bzImage $dest/vmlinuz
fi
# initrd is made of concatenation of multiple filesystem images
if [ -n "${INITRD}" ]; then
rm -f $dest/initrd
for fs in ${INITRD}
do
if [ -s "${fs}" ]; then
cat ${fs} >> $dest/initrd
else
bbfatal "${fs} is invalid. initrd image creation failed."
fi
done
chmod 0644 $dest/initrd
fi
}
build_boot_dd() {
HDDDIR="${S}/hdd/boot"
HDDIMG="${S}/hdd.image"
IMAGE=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hdddirect
boot_direct_populate $HDDDIR
if [ "${PCBIOS}" = "1" ]; then
syslinux_hddimg_populate $HDDDIR
fi
if [ "${EFI}" = "1" ]; then
efi_hddimg_populate $HDDDIR
fi
if [ "${IS_VM}" = "true" ]; then
if [ "x${AUTO_SYSLINUXMENU}" = "x1" ] ; then
install -m 0644 ${STAGING_DIR}/${MACHINE}/usr/share/syslinux/vesamenu.c32 $HDDDIR/${SYSLINUXDIR}/
if [ "x${SYSLINUX_SPLASH}" != "x" ] ; then
install -m 0644 ${SYSLINUX_SPLASH} $HDDDIR/${SYSLINUXDIR}/splash.lss
fi
fi
fi
BLOCKS=`du -bks $HDDDIR | cut -f 1`
BLOCKS=`expr $BLOCKS + ${BOOTDD_EXTRA_SPACE}`
# Ensure total sectors is an integral number of sectors per
# track or mcopy will complain. Sectors are 512 bytes, and we
# generate images with 32 sectors per track. This calculation is
# done in blocks, thus the mod by 16 instead of 32.
BLOCKS=$(expr $BLOCKS + $(expr 16 - $(expr $BLOCKS % 16)))
mkdosfs -n ${BOOTDD_VOLUME_ID} -S 512 -C $HDDIMG $BLOCKS
mcopy -i $HDDIMG -s $HDDDIR/* ::/
if [ "${PCBIOS}" = "1" ]; then
syslinux_hdddirect_install $HDDIMG
fi
chmod 644 $HDDIMG
ROOTFSBLOCKS=`du -Lbks ${ROOTFS} | cut -f 1`
TOTALSIZE=`expr $BLOCKS + $ROOTFSBLOCKS`
END1=`expr $BLOCKS \* 1024`
END2=`expr $END1 + 512`
END3=`expr \( $ROOTFSBLOCKS \* 1024 \) + $END1`
echo $ROOTFSBLOCKS $TOTALSIZE $END1 $END2 $END3
rm -rf $IMAGE
dd if=/dev/zero of=$IMAGE bs=1024 seek=$TOTALSIZE count=1
parted $IMAGE mklabel msdos
parted $IMAGE mkpart primary fat16 0 ${END1}B
parted $IMAGE unit B mkpart primary ext2 ${END2}B ${END3}B
parted $IMAGE set 1 boot on
parted $IMAGE print
awk "BEGIN { printf \"$(echo ${DISK_SIGNATURE} | fold -w 2 | tac | paste -sd '' | sed 's/\(..\)/\\x&/g')\" }" | \
dd of=$IMAGE bs=1 seek=440 conv=notrunc
OFFSET=`expr $END2 / 512`
if [ "${PCBIOS}" = "1" ]; then
dd if=${STAGING_DATADIR}/syslinux/mbr.bin of=$IMAGE conv=notrunc
fi
dd if=$HDDIMG of=$IMAGE conv=notrunc seek=1 bs=512
dd if=${ROOTFS} of=$IMAGE conv=notrunc seek=$OFFSET bs=512
cd ${DEPLOY_DIR_IMAGE}
rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hdddirect
ln -s ${IMAGE_NAME}.hdddirect ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hdddirect
}
python do_bootdirectdisk() {
validate_disk_signature(d)
if d.getVar("PCBIOS", True) == "1":
bb.build.exec_func('build_syslinux_cfg', d)
if d.getVar("EFI", True) == "1":
bb.build.exec_func('build_efi_cfg', d)
bb.build.exec_func('build_boot_dd', d)
}
def generate_disk_signature():
import uuid
signature = str(uuid.uuid4())[:8]
if signature != '00000000':
return signature
else:
return 'ffffffff'
def validate_disk_signature(d):
import re
disk_signature = d.getVar("DISK_SIGNATURE", True)
if not re.match(r'^[0-9a-fA-F]{8}$', disk_signature):
bb.fatal("DISK_SIGNATURE '%s' must be an 8 digit hex string" % disk_signature)
DISK_SIGNATURE_GENERATED := "${@generate_disk_signature()}"
addtask bootdirectdisk before do_build
|
