Squashed 'yocto-poky/' content from commit ea562de
git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/meta/classes/boot-directdisk.bbclass b/meta/classes/boot-directdisk.bbclass
new file mode 100644
index 0000000..600e21a
--- /dev/null
+++ b/meta/classes/boot-directdisk.bbclass
@@ -0,0 +1,194 @@
+# 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=/dev/sda2"
+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