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# Do post-image-building tasks for armel+dove, to make vfat images bootable;
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# this script encapsulates the VFAT image in a PC partition image, with
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# unpartitioned data holding boot data; this is very board specific and targets
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# the Marvell Dove reference boards (e.g. Y0/Y1) but might work on other Dove
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# $2 is the temporary CD build dir
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# $3 is the image file
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# Copyright (c) 2009 Canonical
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# Authors: Oliver Grawert <ogra@canonical.com>
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# Loïc Minier <loic.minier@canonical.com>
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# Michael Casadevall <michael.casadevall@canonical.com>
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# - use safer -m flag of parted (needs a newer parted)
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# - add splash to cmdline (doesn't work right now; LP: #358362)
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. "$BASEDIR/tools/boot/$DI_CODENAME/common.sh"
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# Only disk 1* bootable
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if ([ "$N" != 1 ] && [ "$N" != 1_NONUS ]) || [ "$CDIMAGE_ADDON" ]; then
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# We only want to do this for vfat images
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if [ "$IMAGE_FORMAT" != "vfat" ]; then
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# this script creates an image to write to a SD card with a PC partition table;
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# the first partition is the vfat passed as $3 ($IMAGE) and contains the
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# the PC partitions have addresses which are constrained by what can be
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# expressed in CHS / LBA; non-CHS aligned values scare fdisk, but parted is
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# fine with pure LBA addresses on 512 bytes boundaries, so we use that
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IMAGE_SIZE="$(file_length "$IMAGE")"
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# round size to next block; note we add 512 for MBR + partition table; also
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# note we assume blocks of 512 B
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IMG_SIZE_BLOCKS="$(((512 + $IMAGE_SIZE + 512 - 1) / 512))"
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# rename the VFAT image out of the way for the disk image
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mv -f "$IMAGE" "$IMAGE.vfat"
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# create the blank disk image (and this is a sparse file)
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dd if=/dev/zero of="$IMAGE" bs=512 count=0 seek="$IMG_SIZE_BLOCKS" 2>/dev/null
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# create partition table
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log "initializing disk label (MBR and partition table)..."
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parted -s "$IMAGE" mklabel msdos
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# outputs actual partition start offset, end offset, and length, suffixed with
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LANG=C parted -s "$IMAGE" unit B print | awk "/^ $n / { print \$2 \" \" \$3 \" \" \$4 }"
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# safer version using parted -m; needs newer parted
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#LANG=C parted -m -s "$IMAGE" unit B print | grep "^$n:" | cut -d: -f 2,3,4 --output-delimiter=" "
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# read disk size, or rather last disk byte, with a "B" char at the end of the
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# safer version using parted -m; needs newer parted
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#DISK_END_B="$(LANG=C parted -m -s "$IMAGE" unit B print | tail -1 | cut -d : -f 2)"
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DISK_END_B="$(LANG=C parted -s "$IMAGE" unit B print | sed -rn 's/^Disk [^:]+: ([0-9]+B)$/\1/p')"
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# create partition for the VFAT
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log "creating VFAT partition..."
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parted -s "$IMAGE" mkpart primary fat32 0 "$((${DISK_END_B%B} - 1))B"
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VFAT_LEN_B="`(set -- $(get_part_data 1); echo "$3")`"
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if [ "${VFAT_LEN_B%B}" -lt "$IMAGE_SIZE" ]; then
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die "VFAT partition length is $VFAT_LEN_B and doesn't leave enough room for VFAT ${IMAGE_SIZE}B"
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VFAT_START_B="`(set -- $(get_part_data 1); echo "$1")`"
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log "writing vfat contents..."
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dd conv=notrunc bs="${VFAT_START_B%B}" if="$IMAGE.vfat" of="$IMAGE" seek=1 2>/dev/null
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# VFAT isn't needed anymore
added
removed
tools/boot/oneiric/post-boot-armel+dove
