diff options
Diffstat (limited to 'meta/classes/boot-directdisk.bbclass')
-rw-r--r-- | meta/classes/boot-directdisk.bbclass | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/meta/classes/boot-directdisk.bbclass b/meta/classes/boot-directdisk.bbclass new file mode 100644 index 0000000000..88e5c52e2b --- /dev/null +++ b/meta/classes/boot-directdisk.bbclass | |||
@@ -0,0 +1,182 @@ | |||
1 | # boot-directdisk.bbclass | ||
2 | # (loosly based off bootimg.bbclass Copyright (C) 2004, Advanced Micro Devices, Inc.) | ||
3 | # | ||
4 | # Create an image which can be placed directly onto a harddisk using dd and then | ||
5 | # booted. | ||
6 | # | ||
7 | # This uses syslinux. extlinux would have been nice but required the ext2/3 | ||
8 | # partition to be mounted. grub requires to run itself as part of the install | ||
9 | # process. | ||
10 | # | ||
11 | # The end result is a 512 boot sector populated with an MBR and partition table | ||
12 | # followed by an msdos fat16 partition containing syslinux and a linux kernel | ||
13 | # completed by the ext2/3 rootfs. | ||
14 | # | ||
15 | # We have to push the msdos parition table size > 16MB so fat 16 is used as parted | ||
16 | # won't touch fat12 partitions. | ||
17 | |||
18 | # External variables needed | ||
19 | |||
20 | # ${ROOTFS} - the rootfs image to incorporate | ||
21 | |||
22 | do_bootdirectdisk[depends] += "dosfstools-native:do_populate_sysroot \ | ||
23 | syslinux:do_populate_sysroot \ | ||
24 | syslinux-native:do_populate_sysroot \ | ||
25 | parted-native:do_populate_sysroot \ | ||
26 | mtools-native:do_populate_sysroot " | ||
27 | |||
28 | PACKAGES = " " | ||
29 | EXCLUDE_FROM_WORLD = "1" | ||
30 | |||
31 | BOOTDD_VOLUME_ID ?= "boot" | ||
32 | BOOTDD_EXTRA_SPACE ?= "16384" | ||
33 | |||
34 | EFI = "${@base_contains("MACHINE_FEATURES", "efi", "1", "0", d)}" | ||
35 | EFI_PROVIDER ?= "grub-efi" | ||
36 | EFI_CLASS = "${@base_contains("MACHINE_FEATURES", "efi", "${EFI_PROVIDER}", "", d)}" | ||
37 | |||
38 | # Include legacy boot if MACHINE_FEATURES includes "pcbios" or if it does not | ||
39 | # contain "efi". This way legacy is supported by default if neither is | ||
40 | # specified, maintaining the original behavior. | ||
41 | def pcbios(d): | ||
42 | pcbios = base_contains("MACHINE_FEATURES", "pcbios", "1", "0", d) | ||
43 | if pcbios == "0": | ||
44 | pcbios = base_contains("MACHINE_FEATURES", "efi", "0", "1", d) | ||
45 | return pcbios | ||
46 | |||
47 | def pcbios_class(d): | ||
48 | if d.getVar("PCBIOS", True) == "1": | ||
49 | return "syslinux" | ||
50 | return "" | ||
51 | |||
52 | PCBIOS = "${@pcbios(d)}" | ||
53 | PCBIOS_CLASS = "${@pcbios_class(d)}" | ||
54 | |||
55 | inherit ${PCBIOS_CLASS} | ||
56 | inherit ${EFI_CLASS} | ||
57 | |||
58 | # Get the build_syslinux_cfg() function from the syslinux class | ||
59 | |||
60 | AUTO_SYSLINUXCFG = "1" | ||
61 | DISK_SIGNATURE ?= "${DISK_SIGNATURE_GENERATED}" | ||
62 | SYSLINUX_ROOT ?= "root=/dev/sda2" | ||
63 | SYSLINUX_TIMEOUT ?= "10" | ||
64 | |||
65 | IS_VMDK = '${@base_contains("IMAGE_FSTYPES", "vmdk", "true", "false", d)}' | ||
66 | |||
67 | boot_direct_populate() { | ||
68 | dest=$1 | ||
69 | install -d $dest | ||
70 | |||
71 | # Install bzImage, initrd, and rootfs.img in DEST for all loaders to use. | ||
72 | install -m 0644 ${STAGING_KERNEL_DIR}/bzImage $dest/vmlinuz | ||
73 | |||
74 | if [ -n "${INITRD}" ] && [ -s "${INITRD}" ]; then | ||
75 | install -m 0644 ${INITRD} $dest/initrd | ||
76 | fi | ||
77 | |||
78 | } | ||
79 | |||
80 | build_boot_dd() { | ||
81 | HDDDIR="${S}/hdd/boot" | ||
82 | HDDIMG="${S}/hdd.image" | ||
83 | IMAGE=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hdddirect | ||
84 | |||
85 | boot_direct_populate $HDDDIR | ||
86 | |||
87 | if [ "${PCBIOS}" = "1" ]; then | ||
88 | syslinux_hddimg_populate $HDDDIR | ||
89 | fi | ||
90 | if [ "${EFI}" = "1" ]; then | ||
91 | efi_hddimg_populate $HDDDIR | ||
92 | fi | ||
93 | |||
94 | if [ "${IS_VMDK}" = "true" ]; then | ||
95 | if [ "x${AUTO_SYSLINUXMENU}" = "x1" ] ; then | ||
96 | install -m 0644 ${STAGING_DIR}/${MACHINE}/usr/share/syslinux/vesamenu.c32 ${HDDDIR}${SYSLINUXDIR}/vesamenu.c32 | ||
97 | if [ "x${SYSLINUX_SPLASH}" != "x" ] ; then | ||
98 | install -m 0644 ${SYSLINUX_SPLASH} ${HDDDIR}${SYSLINUXDIR}/splash.lss | ||
99 | fi | ||
100 | fi | ||
101 | fi | ||
102 | |||
103 | BLOCKS=`du -bks $HDDDIR | cut -f 1` | ||
104 | BLOCKS=`expr $BLOCKS + ${BOOTDD_EXTRA_SPACE}` | ||
105 | |||
106 | # Ensure total sectors is an integral number of sectors per | ||
107 | # track or mcopy will complain. Sectors are 512 bytes, and we | ||
108 | # generate images with 32 sectors per track. This calculation is | ||
109 | # done in blocks, thus the mod by 16 instead of 32. | ||
110 | BLOCKS=$(expr $BLOCKS + $(expr 16 - $(expr $BLOCKS % 16))) | ||
111 | |||
112 | mkdosfs -n ${BOOTDD_VOLUME_ID} -S 512 -C $HDDIMG $BLOCKS | ||
113 | mcopy -i $HDDIMG -s $HDDDIR/* ::/ | ||
114 | |||
115 | if [ "${PCBIOS}" = "1" ]; then | ||
116 | syslinux_hdddirect_install $HDDIMG | ||
117 | fi | ||
118 | chmod 644 $HDDIMG | ||
119 | |||
120 | ROOTFSBLOCKS=`du -Lbks ${ROOTFS} | cut -f 1` | ||
121 | TOTALSIZE=`expr $BLOCKS + $ROOTFSBLOCKS` | ||
122 | END1=`expr $BLOCKS \* 1024` | ||
123 | END2=`expr $END1 + 512` | ||
124 | END3=`expr \( $ROOTFSBLOCKS \* 1024 \) + $END1` | ||
125 | |||
126 | echo $ROOTFSBLOCKS $TOTALSIZE $END1 $END2 $END3 | ||
127 | rm -rf $IMAGE | ||
128 | dd if=/dev/zero of=$IMAGE bs=1024 seek=$TOTALSIZE count=1 | ||
129 | |||
130 | parted $IMAGE mklabel msdos | ||
131 | parted $IMAGE mkpart primary fat16 0 ${END1}B | ||
132 | parted $IMAGE unit B mkpart primary ext2 ${END2}B ${END3}B | ||
133 | parted $IMAGE set 1 boot on | ||
134 | |||
135 | parted $IMAGE print | ||
136 | |||
137 | awk "BEGIN { printf \"$(echo ${DISK_SIGNATURE} | fold -w 2 | tac | paste -sd '' | sed 's/\(..\)/\\x&/g')\" }" | \ | ||
138 | dd of=$IMAGE bs=1 seek=440 conv=notrunc | ||
139 | |||
140 | OFFSET=`expr $END2 / 512` | ||
141 | if [ "${PCBIOS}" = "1" ]; then | ||
142 | dd if=${STAGING_DATADIR}/syslinux/mbr.bin of=$IMAGE conv=notrunc | ||
143 | fi | ||
144 | |||
145 | dd if=$HDDIMG of=$IMAGE conv=notrunc seek=1 bs=512 | ||
146 | dd if=${ROOTFS} of=$IMAGE conv=notrunc seek=$OFFSET bs=512 | ||
147 | |||
148 | cd ${DEPLOY_DIR_IMAGE} | ||
149 | rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hdddirect | ||
150 | ln -s ${IMAGE_NAME}.hdddirect ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hdddirect | ||
151 | } | ||
152 | |||
153 | python do_bootdirectdisk() { | ||
154 | validate_disk_signature(d) | ||
155 | if d.getVar("PCBIOS", True) == "1": | ||
156 | bb.build.exec_func('build_syslinux_cfg', d) | ||
157 | if d.getVar("EFI", True) == "1": | ||
158 | bb.build.exec_func('build_efi_cfg', d) | ||
159 | bb.build.exec_func('build_boot_dd', d) | ||
160 | } | ||
161 | |||
162 | def generate_disk_signature(): | ||
163 | import uuid | ||
164 | |||
165 | signature = str(uuid.uuid4())[:8] | ||
166 | |||
167 | if signature != '00000000': | ||
168 | return signature | ||
169 | else: | ||
170 | return 'ffffffff' | ||
171 | |||
172 | def validate_disk_signature(d): | ||
173 | import re | ||
174 | |||
175 | disk_signature = d.getVar("DISK_SIGNATURE", True) | ||
176 | |||
177 | if not re.match(r'^[0-9a-fA-F]{8}$', disk_signature): | ||
178 | bb.fatal("DISK_SIGNATURE '%s' must be an 8 digit hex string" % disk_signature) | ||
179 | |||
180 | DISK_SIGNATURE_GENERATED := "${@generate_disk_signature()}" | ||
181 | |||
182 | addtask bootdirectdisk before do_build | ||