There's currently a number of ARM (currently all are ARMv7) based Chromebooks base on a few specific SoCs.
They are:
Samsung Exynos:
- Snow (Exynos 5240)
- CB2 (Exynos 5800, 1080p, microSD)
NVIDIA Tegra K1:
- Acer nyan-big (1080p HD version, and non-HD variant)
- HP nyan-blaze (discontinued)
Rockchips:
- Asus flip
Preparing Fedora
Start by downloading your Fedora, here we use the XFCE variant, but you can choose another at the download site:
http://download.fedoraproject.org/pub/fedora/linux/releases/22/Images/armhfp/
$ cd /tmp $ wget http://download.fedoraproject.org/pub/fedora/linux/releases/22/Images/armhfp/Fedora-Xfce-armhfp-22-3-sda.raw.xz $ unxz -v Fedora-Xfce-armhfp-22-3-sda.raw.xz
Next you mount the raw disk image, and extract the rootfs. (Note the loop devices in the output)
$ sudo kpartx -av /tmp/Fedora-Xfce-armhfp-22-3-sda.raw $ sudo dd if=/dev/mapper/loop0p3 of=/tmp/Fedora-22-Xfce-rootfs.ext4 conv=fsync $ sudo kpartx -d /tmp/Fedora-Xfce-armhfp-22-3-sda.raw
At this point you may optionally shrink ext4 rootfs. (It will be expanded in a later step)
$ sudo e2fsck -f /tmp/Fedora-22-Xfce-rootfs.ext4 $ sudo resize2fs -fM /tmp/Fedora-22-Xfce-rootfs.ext4
Label the rootfs, and apply a new UUID
$ UUID=$(uuidgen) $ LABEL='ROOTFS' $ sudo tune2fs -U "$UUID" -L "$LABEL" /tmp/Fedora-22-Xfce-rootfs.ext4
Create the partitions
$ truncate --size=7GiB /tmp/chromebook-xfce.raw
$ sgdisk -a 8192 -n 1:0:+30M -t 1:7F00 -c 1:"KERN-A" -A 1:=:0x011F000000000000 \
-n 2:0:+30M -t 2:7F00 -c 2:"KERN-B" -A 2:=:0x011A000000000000 \
-n 3:0:+30M -t 3:7F00 -c 3:"KERN-C" -A 3:=:0x0115000000000000 \
-n 4:0:+1G -t 4:8300 -c 4:"BOOT" \
-n 5:0:+1G -t 5:8200 -c 5:"SWAP" \
-n 6:0:0 -t 6:8300 -c 6:"ROOTFS" /tmp/chromebook-xfce.raw
Write the Xfce rootfs to the partition.
$ sudo kpartx -avg /tmp/chromebook-xfce.raw $ dd if=/tmp/Fedora-22-Xfce-rootfs.ext4 of=/dev/mapper/loop0p6 bs=2M conv=fsync $ sudo resize2fs -f /dev/mapper/loop0p6
Setup the swap device
$ UUID_SWAP=$(uuidgen) $ sudo swapon -v -U "$UUID_SWAP" -L 'SWAP' /dev/mapper/loop0p5
Setup the Fedora boot partition
$ UUID_BOOT=$(uuidgen) $ sudo mkfs.ext4 -m0 -U "$UUID_BOOT" -L 'BOOT' /dev/mapper/loop0p4
Mount the filesystems
$ sudo mount /dev/mapper/loop0p6 /mnt $ sudo mount /dev/mapper/loop0p4 /mnt/boot
Configure the filesystem table
cat <<-EOF > /mnt/etc/fstab UUID=$UUID / ext4 defaults 1 1 UUID=$UUID_SWAP swap swap defaults 0 0 UUID=$UUID_BOOT /boot ext4 defaults 0 2 EOF
(to be continued)