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7af1525794
The current partitioning scheme leaves a 1MB gap between all the generated partitions by adding a 1 to the end of the last partition to use as the start of the next. parted is smart enough to not overlap start and end positions of the same value. This avoids the 1 MB gaps. Rather than pad the disk with 1MB in the beginning and cut it off at the MB boundary on the end, we can use 0% and 100% to allow parted to do the required math and use as much of the disk as possible. (From OE-Core rev: 8aac6ecc5194c734dfd3d677017ab3ea045b2339) Signed-off-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
198 lines
4.7 KiB
Bash
198 lines
4.7 KiB
Bash
#!/bin/sh -e
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#
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# Copyright (C) 2008-2011 Intel
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#
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# install.sh [device_name] [rootfs_name] [video_mode] [vga_mode]
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#
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PATH=/sbin:/bin:/usr/sbin:/usr/bin
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# We need 20 Mb for the boot partition
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boot_size=20
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# 5% for the swap
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swap_ratio=5
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found="no"
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echo "Searching for a hard drive..."
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for device in 'hda' 'hdb' 'sda' 'sdb' 'mmcblk0' 'mmcblk1'
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do
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if [ -e /sys/block/${device}/removable ]; then
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if [ "$(cat /sys/block/${device}/removable)" = "0" ]; then
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found="yes"
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while true; do
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# Try sleeping here to avoid getting kernel messages
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# obscuring/confusing user
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sleep 5
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echo "Found drive at /dev/${device}. Do you want to install this image there ? [y/n]"
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read answer
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if [ "$answer" = "y" ] ; then
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break
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fi
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if [ "$answer" = "n" ] ; then
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found=no
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break
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fi
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echo "Please answer by y or n"
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done
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fi
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fi
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if [ "$found" = "yes" ]; then
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break;
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fi
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done
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if [ "$found" = "no" ]; then
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exit 1
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fi
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echo "Installing image on /dev/${device}"
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#
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# The udev automounter can cause pain here, kill it
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#
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rm -f /etc/udev/scripts/mount*
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#
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# Unmount anything the automounter had mounted
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#
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umount /dev/${device}* 2> /dev/null || /bin/true
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if [ ! -b /dev/sda ] ; then
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mknod /dev/sda b 8 0
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fi
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if [ ! -b /dev/sdb ] ; then
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mknod /dev/sdb b 8 16
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fi
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if [ ! -b /dev/loop0 ] ; then
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mknod /dev/loop0 b 7 0
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fi
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mkdir -p /tmp
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cat /proc/mounts > /etc/mtab
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disk_size=$(parted /dev/${device} unit mb print | grep Disk | cut -d" " -f 3 | sed -e "s/MB//")
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swap_size=$((disk_size*swap_ratio/100))
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rootfs_size=$((disk_size-boot_size-swap_size))
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rootfs_start=$((boot_size))
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rootfs_end=$((rootfs_start+rootfs_size))
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swap_start=$((rootfs_end))
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# MMC devices are special in a couple of ways
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# 1) they use a partition prefix character 'p'
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# 2) they are detected asynchronously (need rootwait)
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rootwait=""
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part_prefix=""
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if [ ! "${device#mmcblk}" = "${device}" ]; then
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part_prefix="p"
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rootwait="rootwait"
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fi
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bootfs=/dev/${device}${part_prefix}1
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rootfs=/dev/${device}${part_prefix}2
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swap=/dev/${device}${part_prefix}3
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echo "*****************"
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echo "Boot partition size: $boot_size MB ($bootfs)"
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echo "Rootfs partition size: $rootfs_size MB ($rootfs)"
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echo "Swap partition size: $swap_size MB ($swap)"
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echo "*****************"
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echo "Deleting partition table on /dev/${device} ..."
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dd if=/dev/zero of=/dev/${device} bs=512 count=2
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echo "Creating new partition table on /dev/${device} ..."
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parted /dev/${device} mklabel msdos
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echo "Creating boot partition on $bootfs"
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parted /dev/${device} mkpart primary 0% $boot_size
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echo "Creating rootfs partition on $rootfs"
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parted /dev/${device} mkpart primary $rootfs_start $rootfs_end
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echo "Creating swap partition on $swap"
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parted /dev/${device} mkpart primary $swap_start 100%
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parted /dev/${device} print
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echo "Formatting $bootfs to ext3..."
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mkfs.ext3 $bootfs
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echo "Formatting $rootfs to ext3..."
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mkfs.ext3 $rootfs
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echo "Formatting swap partition...($swap)"
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mkswap $swap
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mkdir /ssd
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mkdir /rootmnt
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mkdir /bootmnt
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mount $rootfs /ssd
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mount -o rw,loop,noatime,nodiratime /media/$1/$2 /rootmnt
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echo "Copying rootfs files..."
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cp -a /rootmnt/* /ssd
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if [ -d /ssd/etc/ ] ; then
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echo "$swap swap swap defaults 0 0" >> /ssd/etc/fstab
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# We dont want udev to mount our root device while we're booting...
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if [ -d /ssd/etc/udev/ ] ; then
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echo "/dev/${device}" >> /ssd/etc/udev/mount.blacklist
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fi
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fi
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if [ -f /ssd/etc/grub.d/40_custom ] ; then
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echo "Preparing custom grub2 menu..."
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sed -i "s@__ROOTFS__@$rootfs $rootwait@g" /ssd/etc/grub.d/40_custom
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sed -i "s/__VIDEO_MODE__/$3/g" /ssd/etc/grub.d/40_custom
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sed -i "s/__VGA_MODE__/$4/g" /ssd/etc/grub.d/40_custom
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mount $bootfs /bootmnt
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cp /ssd/etc/grub.d/40_custom /bootmnt/40_custom
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umount /bootmnt
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fi
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umount /ssd
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umount /rootmnt
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echo "Preparing boot partition..."
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mount $bootfs /ssd
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grub-install --root-directory=/ssd /dev/${device}
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echo "(hd0) /dev/${device}" > /ssd/boot/grub/device.map
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if [ -f /ssd/40_custom ] ; then
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mv /ssd/40_custom /ssd/boot/grub/grub.cfg
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sed -i "/#/d" /ssd/boot/grub/grub.cfg
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sed -i "/exec tail/d" /ssd/boot/grub/grub.cfg
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chmod 0444 /ssd/boot/grub/grub.cfg
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else
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echo "Preparing custom grub menu..."
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echo "default 0" > /ssd/boot/grub/menu.lst
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echo "timeout 30" >> /ssd/boot/grub/menu.lst
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echo "title Live Boot/Install-Image" >> /ssd/boot/grub/menu.lst
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echo "root (hd0,0)" >> /ssd/boot/grub/menu.lst
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echo "kernel /boot/vmlinuz root=$rootfs rw $3 $4 quiet" >> /ssd/boot/grub/menu.lst
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fi
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cp /media/$1/vmlinuz /ssd/boot/
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umount /ssd
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sync
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echo "Remove your installation media, and press ENTER"
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read enter
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echo "Rebooting..."
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reboot -f
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