From c527fd1f14c27855a37f2e8ac5346ce8d940ced2 Mon Sep 17 00:00:00 2001 From: Tudor Florea Date: Thu, 16 Oct 2014 03:05:19 +0200 Subject: initial commit for Enea Linux 4.0-140929 Migrated from the internal git server on the daisy-enea-point-release branch Signed-off-by: Tudor Florea --- meta/classes/boot-directdisk.bbclass | 182 +++++++++++++++++++++++++++++++++++ 1 file changed, 182 insertions(+) create mode 100644 meta/classes/boot-directdisk.bbclass (limited to 'meta/classes/boot-directdisk.bbclass') 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 @@ +# 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 + +# ${ROOTFS} - the rootfs image to incorporate + +do_bootdirectdisk[depends] += "dosfstools-native:do_populate_sysroot \ + syslinux:do_populate_sysroot \ + syslinux-native:do_populate_sysroot \ + parted-native:do_populate_sysroot \ + mtools-native:do_populate_sysroot " + +PACKAGES = " " +EXCLUDE_FROM_WORLD = "1" + +BOOTDD_VOLUME_ID ?= "boot" +BOOTDD_EXTRA_SPACE ?= "16384" + +EFI = "${@base_contains("MACHINE_FEATURES", "efi", "1", "0", d)}" +EFI_PROVIDER ?= "grub-efi" +EFI_CLASS = "${@base_contains("MACHINE_FEATURES", "efi", "${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 = base_contains("MACHINE_FEATURES", "pcbios", "1", "0", d) + if pcbios == "0": + pcbios = base_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_VMDK = '${@base_contains("IMAGE_FSTYPES", "vmdk", "true", "false", d)}' + +boot_direct_populate() { + dest=$1 + install -d $dest + + # Install bzImage, initrd, and rootfs.img in DEST for all loaders to use. + install -m 0644 ${STAGING_KERNEL_DIR}/bzImage $dest/vmlinuz + + if [ -n "${INITRD}" ] && [ -s "${INITRD}" ]; then + install -m 0644 ${INITRD} $dest/initrd + fi + +} + +build_boot_dd() { + HDDDIR="${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_VMDK}" = "true" ]; then + if [ "x${AUTO_SYSLINUXMENU}" = "x1" ] ; then + install -m 0644 ${STAGING_DIR}/${MACHINE}/usr/share/syslinux/vesamenu.c32 ${HDDDIR}${SYSLINUXDIR}/vesamenu.c32 + 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 -- cgit v1.2.3-54-g00ecf