Architectures/ARM/Samsung Chromebook 2012
Samsung Chromebook 2012
The 2012 Samsung Google Chromebook is a popular ARM-powered laptop form-factor computer due to its relatively low cost, high build quality, and good performance. It is one of the first Cortex-A15 based devices available, and as such is also of interest to those developing initial support for Linux virtualization technologies within Fedora and in the wider community.
- 1.7 GHz Dual core Cortex-A15 Processor (EXYNOS5250 0x43520010 1MB L2)
- 2 GB DDR3L RAM (800Mhz)
- 16GB e.MMC iNAND internal (Chrome), SD|SDHC|SDXC slot (Fedora)
- 11.6" (1366x768) display (powered by Mali-T604), with HDMI output
- 802.11 b/g/n WiFi, and HSPA/EVDO (optional, with SIM slot)
- 1xUSB2.0, 1xUSB3.0
For more information on the 2012 Samsung Chromebook visit the Samsung Chromebook website.
Running Fedora on a Samsung Chromebook 2012
This page will give you detailed instructions for running Fedora 17 and Fedora 18 on your Samsung Chromebook, using an SD, SDHC, or SDXC card as the boot device. The configuration will provide the XFCE desktop environment.
Setting up developer mode and backing up firmware/modules on the Chromebook
Before you can begin to install Fedora, you will need to place the Chromebook into "developer mode". This is a special state that is able to run unsigned OS images. Instructions for entering developer mode on the Samsung ARM Chromebook are provided on the Chromium Projects website. The Samsung Chromebook differs from previous units by having a virtual developer switch, as opposed to a physical one. Entering developer mode can be summarized as pressing ESC and Refresh while pressing power (Recovery Mode), then pressing Ctrl-D to enter Recovery mode. A warning message will be presented. After that, the unit will reset to erase all persistent data, and will then be able to boot custom Operating Systems.
Once the Chromebook is in developer mode, you will need to switch to a vritual console (ctrl-alt-F2 - the "forward key" is F2) and login as "chronos" with password "chronos". From the shell, backup the content of /lib/modules, and /lib/firmware, and copy these over to another system, for example using ssh:
cd / tar cvfj /tmp/firmware.tar.bz2 /lib/firmware tar cvfj /tmp/modules.tar.bz2 /lib/modules scp -v -C -r /tmp/firmware.tar.bz2 /tmp/modules.tar.bz2 user@desktop:~/
Download the image
The first step is to download the armhfp "hard float" pre-built Fedora 17 filesystem archive. This contains only the Fedora ARM filesystem, but not customized to a specific device. You will also require an empty (or otherwise sacrificial) SD Card for the installation.
Writing the Image
Insert the new or sacrificial SD Card into the SD Card slot on your Linux computer. Using a command such as "dmesg|tail", ascertain the name of the newly inserted device, which will be "/dev/sdb", "/dev/sdc", or similar. Note carefully the name. Then, use the GPT-capable gdisk partitioning utility (which you may need to install) to delete the existing partition(s):
$ sudo gdisk /dev/sdb
Type "d" (delete), then accept the default (1), or if there are multiple partitions, repeat the process until they have been deleted. Then, change the default alignment of newly created partitions to 8K:
x l 8192 m
Next, create three new partitions, two for the kernel (and backup kernel - which is not used at this time, but will be later) of type 7f00 (ChromeOS kernel), and one for the root filesystem (Linux filesystem - the default type):
n 1 <enter> +16M 7f00
n 2 <enter> +16M 7f00
n 3 <enter> <enter> <enter>
Next, make and mount a new ext4 filesystem on the third partition of the device. Then, extract the Fedora 17 root filesystem you downloaded earlier:
sudo mkfs.ext4 -L rootfs /dev/sdb3 sudo mount /dev/sdb3 /mnt cd /mnt sudo tar xvfJ /path/to/fedora/17/filesystem/image.tar.xz
Using Fedora on the Pandaboard
There are Fedora ARM users all around the globe - if you need assistance, would like to provide feedback or contribute to Fedora ARM please visit us on the IRC - we can be found in #fedora-arm on Freenode. You can also contact us on the mailing list - firstname.lastname@example.org