Fedora 21 for ARM
The Fedora ARM team is pleased to announce that Fedora 21 for the ARM Architecture is now available for download from:
http://download.fedoraproject.org/pub/fedora/linux/releases/21/Images/armhfp/
Fedora 21 for ARM includes a number of images providing for a variety of desktop choices (including MATE, KDE, XFCE, LXDE, SOAS), as well as a minimal image that does not include the desktop. Any of these images can be used with QEMU on an x86_64 desktop to emulate a fully functional ARM environment.
The image-based installation process involves downloading an image file (depending upon the desktop/non-desktop option desired), inserting removable media into a "host" system (e.g. an ARM or x86_64 PC class desktop, laptop, etc.) and performing a few simple commands to write this image onto the media. This media is then used by the ARM "target" system to boot the Fedora 21 environment.
Overview of Hardware Support Status
Download the Disk Image & Copy to Media
The image-based installation process involves downloading an image file (depending upon desktop/non-desktop option desired), inserting removable media into a "host" system (e.g. an ARM or x86_64 PC class desktop, laptop, etc.) and performing a few simple commands to write this image onto the media. This media is then used by the ARM "target" system to boot the Fedora 21 environment.
After writing the image and correct U-boot file(s), insert the media into the target platform and boot.
Scripted
The examples provided here are from a Fedora 19/20 host and may need to be adjusted depending on your host environment.
Execute the following script as a user with sudo privileges. It will copy the selected disk image and write the appropriate U-Boot for the target hardware platform. Optionally you can also enable and disable SE Linux and remove the root password requirement (allowing log in without completing initial setup). To add a board not listed, simply create a bash scriptlet with the commands needed to copy U-Boot to media and add to the 'boards.d' directory.
./fedora-arm-image-installer.sh
Usage: fedora-arm-image-installer.sh <options>
--image=IMAGE - xz compressed image file name
--target=TARGET - target board
[Bananapi|beaglebone|Cubietruck|none|panda|trimslice|wandboard_dual|wandboard_quad|wandboard_solo]
--media=DEVICE - media device file (/dev/[sdX|mmcblkX])
--selinux=ON/OFF - Turn SELinux off/on as needed
--norootpass - Remove the root password
-y - Assumes yes, will not wait for confirmation
--version - Display version and exit
Example: fedora-arm-image-installer.sh --image=Fedora-Rawhide.xz --target=panda --media=/dev/mmcblk0 --selinux=OFF
Note, this is not the 
fedora-arm-installer
Manual
Choose a disk image.
http://download.fedoraproject.org/pub/fedora/linux/releases/21/Images/armhfp/
Write the image to your media
TYPE= # options include KDE, LXDE, XFCE, SoaS, Mate and Minimal MEDIA= #/dev/<location-of-your-media xzcat Fedora-$TYPE-armhfp-21-5-sda.raw.xz | sudo dd of=$MEDIA; sync
After writing the image, read the new partition table and mount the root partition
partprobe $MEDIA mkdir /tmp/root; sudo mount /dev/<media-location> /tmp/root
Copy the appropriate U-Boot files for your target hardware listed below.
Write U-Boot to Media
Follow theses steps to write the appropriate U-Boot for your Hardware.
For the Banana Pi (Allwinner A20)
At this time you must have a serial console cable for the Banana Pi. For those that do not, please see the FAQ at the bottom of the page
sudo dd if=/tmp/root/usr/share/uboot/Bananapi/u-boot-sunxi-with-spl.bin of=/dev/<media-location> bs=1024 seek=8 conv=fsync,notrunc
Media should now be ready to boot on the Banana Pi. Insert into the device and boot.
For the CubieBoard v1 (Allwinner A10)
sudo dd if=/tmp/root/usr/share/uboot/Cubieboard/u-boot-sunxi-with-spl.bin of=/dev/<media-location> bs=1024 seek=8 conv=fsync,notrunc
Media should now be ready to boot on the Cubieboard. Insert into the device and boot.
For the CubieTruck (Allwinner A20)
sudo dd if=/tmp/root/usr/share/uboot/Cubietruck/u-boot-sunxi-with-spl.bin of=/dev/<media-location> bs=1024 seek=8 conv=fsync,notrunc
Media should now be ready to boot on the Cubietruck. Insert into the device and boot.
For the BeagleBone ( Black & White )
At this time you must have a serial console cable for the BeagleBone. For those that do not, please see the FAQ at the bottom of the page
sudo dd if=/tmp/root/usr/share/uboot/beaglebone/MLO of=/dev/<media-location> count=1 seek=1 conv=notrunc bs=128k sudo dd if=/tmp/root/usr/share/uboot/beaglebone/u-boot.img of=/dev/<media-location> count=2 seek=1 conv=notrunc bs=384k
Media should now be ready to boot on the BeagleBone. Insert into the device and boot. To boot the Fedora 21 version of U-Boot on MicroSD you will need to hold the "User Boot" button (located near the MicroSD slot) when the device is powered on.
Copying Fedora U-Boot to eMMC on the Beaglebone Black
To Copy the Fedora U-Boot to the eMMC on the Beaglebone Black execute the following steps:
# mount emmc boot partition
mkdir /tmp/emmc; mount /dev/mmcblk1p1 /tmp/emmc
# optionally back up original U-Boot
mkdir /tmp/emmc/orig-uboot; cp /tmp/emmc/{MLO,u-boot.img} /tmp/emmc/orig-uboot/
# copy Fedora U-Boot
cp /usr/share/uboot/beaglebone/{MLO,u-boot.img} /tmp/emmc/
Once completed you will no longer need to press the "User Boot" button to select the Fedora U-Boot.
For the CompuLab TrimSlice
The Trimslice requires no additional steps, U-Boot is included on the device.
For the Wandboard (Freescale i.MX6)
Note - The Wandboard includes a Solo, Dual, and Quad core configuration. Determine your hardware configuration and use the appropriate value. While the Wandboard Quad has been tes ted and confirmed working, the Solo and Dual core models should also work as well. The Wandboard Solo uses the same dtb as the Dual(imx6dl-wandboard.dtb). Copy the U-boot for the Wandboard hardware in use:
BOARD= # Choose 'solo', 'dl' or 'quad' sudo dd if=/tmp/root/usr/share/uboot/wandboard__$BOARD/u-boot.imx of=/dev/<location-of-your-media> bs=1k seek=1 conv=fsync; sync
Remove the media and insert into the Wandboard and boot.
MicroSD for booting is located under the heatsink
For the Pandaboard
sudo dd if=/tmp/root/usr/share/uboot/panda/MLO of=/dev/<location-of-your-media> count=1 seek=1 conv=notrunc bs=128k sudo dd if=/tmp/root/usr/share/uboot/panda/u-boot.img of=/dev/<location-of-your-media> count=2 seek=1 conv=notrunc bs=384k
Media should now be ready to boot on the Pandaboard. Insert into the device and boot.
For Versatile Express Emulation with QEMU
No ARM hardware? No problem! Even without hardware, it is possible to run the Fedora for ARM images using the QEMU emulator program. Any image can be used, and you can choose a scr ipt method or manual depending on your preference.
Using an Existing Disk Image
Choose a disk image.
http://download.fedoraproject.org/pub/fedora/linux/releases/21/Images/armhfp/
Extract the image:
TYPE= # Type of image used. (eg Minimal, KDE, Xfce, SoaS, MATE) unxz Fedora-$TYPE-armhfp-21-5-sda.raw.xz
Install 'libguestfs-tools' to use virt-copy
sudo yum install -y libguestfs-tools
Extract the kernel and initramfs for use with booting.
virt-copy-out -a Fedora-$TYPE-armhfp-21-5-sda.raw /boot .
To boot (you will need to determine the kernel version used in the disk image):
KERN= # kernel version. eg - '/path/to/vmlinuz*'
INITRD= # initrd version. eg - '/path/to/initramfs*'
DTB= # dtb version. eg - '/path/to/dtb*/{vexpress-v2p-ca9.dtb,vexpress-v2p-ca15-tc1.dtb)
TYPE= # image used (Minimal recommended due to ongoing work with vexpress display)
sudo qemu-system-arm -machine vexpress-a9 -m 1024 -nographic -net nic -net user \
-append "console=ttyAMA0,115200n8 rw root=/dev/mmcblk0p3 rootwait physmap.enabled=0" \
-kernel $KERN \
-initrd $INTRD \
-sd Fedora-$TYPE-armhfp-21-5-sda.raw \
-dtb $DTB
For convenience you can also download a script for booting the system here. To run the script:
chmod 755 boot-vexpress ./boot-vexpress -h Usage: ./boot-vexpress [--gui] --kernel=vmlinuz... --ramfs=initramfs --image=fsimage --dtb=vexpress.dtb
NOTE: Booting with device tree is required. Passing --gui for graphics will not work at this time (this is due to ongoing platform reword occurring within the Versatile Expr ess kernel code).
Expanding the Disk Image
You can easily expand the root partition of the disk image using qemu-img.
For example to increase the image size by 10GB you can issue:
qemu-img resize Fedora-$TYPE-armhfp-21-5-sda.raw +10G
Interactive Network Installation
Fedora 21 offers the ability to perform a network installation using either 'vexpress-a15' or 'vexpress-a9'. Using 'vexpress-a15' will allow you to leverage more RAM using the LPAE kernel.
# vexpress-a15 # Create the disk image qemu-img create Fedora-QEMU-armhfp-21-sda.raw $SIZE #add a size EG 8G # retrieve DTB wget https://dl.fedoraproject.org/pub/fedora/linux/releases/21/Server/armhfp/os/images/pxeboot/dtb/vexpress-v2p-ca15-tc1.dtb # Begin Install sudo virt-install \ --name Fedora-QEMU-armhfp-21-A15 \ --ram 2048 \ --arch armv7l \ --machine vexpress-a15 \ --location=https://dl.fedoraproject.org/pub/fedora/linux/releases/21/Server/armhfp/os/ \ --disk Fedora-QEMU-armhfp-21-sda.raw \ --extra-args="console=ttyAMA0 rw" \ --os-variant fedora21 \ --graphics none \ --boot dtb=`pwd`/vexpress-v2p-ca15-tc1.dtb # vexpress-a9 # Create the disk image sudo qemu-img create Fedora-QEMU-armhfp-21-sda.raw $SIZE #add a size EG 8G # retrieve DTB wget https://dl.fedoraproject.org/pub/fedora/linux/releases/21/Server/armhfp/os/images/pxeboot/dtb/vexpress-v2p-ca9.dtb # Begin Install sudo virt-install \ --name Fedora-QEMU-armhfp-21-A9 \ --ram 1024 \ --arch armv7l \ --machine vexpress-a9 \ --location=https://dl.fedoraproject.org/pub/fedora/linux/releases/21/Server/armhfp/os/ \ --disk Fedora-QEMU-armhfp-21-sda.raw \ --extra-args="console=ttyAMA0 rw" \ --os-variant fedora21 \ --graphics none \ --boot dtb=`pwd`/vexpress-v2p-ca9.dtb
Complete a Text or VNC Installation choosing a software packge and partitioning scheme (note when choosing LVM or BTRFS you will need to edit the kernel arguments appropriately). T he system will attempt to reboot but fail until the next step is completed.
Extracting Files from the Disk Image
Once completed you will need to copy the kernel and initramfs and DTB from the disk image for use with Virt-Manager or command line.
KERN= # kernel version
INITRD= # initrd version
sudo virt-copy-out -a Fedora-QEMU-armhfp-21-5-sda.raw /boot/{$KERN,$INITRD} .
# vexpress-a15
sudo virt-copy-out -a Fedora-QEMU-armhfp-21-5-sda.raw /boot/dtb-*/vexpress-v2p-ca15-tc1.dtb .
# vexpress-a9
sudo virt-copy-out -a Fedora-QEMU-armhfp-21-5-sda.raw /boot/dtb-*/vexpress-v2p-ca9.dtb .
Booting the New System
Once the files have been extracted you can choose to use the system on commandline or with Virt-Manager. Virt-Manager offers additional flexibility and is recommended for most user s.
Virt-Manager
- Open Virt-Manager and select the image created above. Click on "Edit-> Virtual Machine Details -> View -> Details"
- Under "Boot Options", add the kernel, initramfs and dtb extracted above (the DTB should point to the correct path)
- For kernel args add (note- if custom partitioning was used for the installation you will to make adjustments to 'root='):
# If you selected Standard Partitioning console=ttyAMA0,115200n8 rw root=/dev/vda3 rootwait # If you selected LVM console=ttyAMA0,115200n8 rw root=/dev/mapper/fedora-root rootwait
- When using the A15 DTB and LPAE kernel it is possible to use more RAM.
Booting for the First Time
Initial-setup
- During the first boot the system will launch the 'initial-setup' utility. For graphical images this will occur on the display, for minimal images this will occur on the serial co
nsole. Failure to complete the initial-setup will prevent logging into the system. To log in to the root account without completing the initial-setup you will need to minimally edi t '/etc/passwd' file and remove the 'x' from the line beginning with 'root' (this will allow you to log into the root account without entering a password).
Resize the Root Filesystem
To resize the root partition use 'gparted' on a Fedora host.
Known Issues & Usage Tips
- Display is not currently working in vexpress emulation.
- A15 emulation through QEMU provides no output on console in Fedora 20(qemu-system-arm-1.6.2-9.fc20), working in Fedora 21(qemu-system-arm-2.1.2-6.fc21).
- After installation with Anaconda you will need to manually edit '/etc/extlinux/extlinux.conf' and add 'fdtdir /dtb-<version>/' line. .
- The system may hang during the update of 'initial-setup'. If this occurs, open another terminal and 'systemctl stop initial-setup-text' or 'systemctl stop initial-setup-graphical' depending on which image is in use.
For a list of all common bugs please visit - http://fedoraproject.org/wiki/Common_F21_bugs .
FAQ
- QUESTION : How do I use Fedora ARM when I have no serial cable or display?
- ANSWER: Though not recommended it is possible to use Fedora ARM without a serial cable or display. When doing so you may want to limit updates to reduce the possibility of not being able to boot. (This example is from a Fedora 19 system, you may need to adjust the mounts used).
USER= # your user account rm /run/media/$USER/__/etc/systemd/system/graphical.target.wants/initial-setup-graphical.service rm /run/media/$USER/__/etc/systemd/system/multi-user.target.wants/initial-setup-text.service mkdir /run/media/$USER/__/root/.ssh/ cat /home/$USER/.ssh/id_rsa.pub >> /run/media/$USER/__/root/.ssh/authorized_keys chmod -R u=rwX,o=,g= /run/media/$USER/__/root/.ssh/
Give the system a few minutes to boot, when it obtains an IP you should be able to ssh to the root account.
- QUESTION : Why does 'yum update' fail?
- ANSWER: The system time might be incorrect, plesae ensure it is correct.