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This is a page about TI's BeagleBoard and BeagleBoard xM.

ARM Cross Compiler: GCC

This is a pre-built (32bit) version of Linaro GCC that runs on generic linux, so 64bit users need to make sure they have installed the 32bit libraries for their distribution.

Download/Extract:

~/
wget -c https://releases.linaro.org/14.03/components/toolchain/binaries/gcc-linaro-arm-linux-gnueabihf-4.8-2014.03_linux.tar.xz
tar xf gcc-linaro-arm-linux-gnueabihf-4.8-2014.03_linux.tar.xz
export CC=`pwd`/gcc-linaro-arm-linux-gnueabihf-4.8-2014.03_linux/bin/arm-linux-gnueabihf-

Test:

If this test fails, verify that you have the 32bit libraries installed on your development system.

~/
${CC}gcc --version
arm-linux-gnueabihf-gcc (crosstool-NG linaro-1.13.1-4.8-2014.03 - Linaro GCC 2014.03) 4.8.3 20140303 (prerelease)
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Bootloader: U-Boot

Das U-Boot -- the Universal Boot Loader http://www.denx.de/wiki/U-Boot

Download:

~/
git clone git://git.denx.de/u-boot.git
cd u-boot/
git checkout v2014.04 -b tmp

Revert: ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e. (unless your using v3.14.x kernel branch)

git revert --no-edit a704a6d615179a25f556c99d31cbc4ee366ffb54

Patches:

~/u-boot
wget -c https://raw.github.com/eewiki/u-boot-patches/master/v2014.04/0001-omap3_beagle-uEnv.txt-bootz-n-fixes.patch

patch -p1 < 0001-omap3_beagle-uEnv.txt-bootz-n-fixes.patch

Configure and Build:

~/u-boot
make ARCH=arm CROSS_COMPILE=${CC} distclean
make ARCH=arm CROSS_COMPILE=${CC} omap3_beagle_config
make ARCH=arm CROSS_COMPILE=${CC}

Linux Kernel

This script will build the kernel and modules and copy them to the deploy directory.

Old Board File tree

Download:

~/
git clone https://github.com/RobertCNelson/stable-kernel.git
cd stable-kernel/

For v3.7.x: (ulcd support)

~/stable-kernel
git checkout origin/v3.7.x -b tmp
./build_kernel.sh

For v3.9.x:

~/stable-kernel
git checkout origin/v3.9.x -b tmp
./build_kernel.sh

 

Device Tree

Download:

~/
git clone https://github.com/RobertCNelson/armv7-multiplatform.git
cd armv7-multiplatform

Checkout v3.14.x branch and build:

~/armv7-multiplatform
git checkout origin/v3.14.x -b tmp
./build_kernel.sh

Root File System

Debian 7

This image contains systemd: https://wiki.debian.org/systemd

 Download:

~/
wget -c https://rcn-ee.net/deb/minfs/wheezy/debian-7.4-minimal-armhf-2014-04-01.tar.xz

Verify:

~/
md5sum debian-7.4-minimal-armhf-2014-04-01.tar.xz
6d0e2ebe884f8a4fd7e6f369f2bfc891 debian-7.4-minimal-armhf-2014-04-01.tar.xz

Extract:

~/
tar xf debian-7.4-minimal-armhf-2014-04-01.tar.xz

Ubuntu 13.10

Download:

~/
wget -c https://rcn-ee.net/deb/minfs/saucy/ubuntu-13.10-minimal-armhf-2014-04-01.tar.xz

Verify:

~/
md5sum ubuntu-13.10-minimal-armhf-2014-04-01.tar.xz
f63350f59379d7a6b2d4df1be177dcef  ubuntu-13.10-minimal-armhf-2014-04-01.tar.xz

Extract:

~/
tar xf ubuntu-13.10-minimal-armhf-2014-04-01.tar.xz

Root File System (small flash)

A Root File System around 64Mb in size, for flash applications.

Debian 7 (small flash)

Download:

~/
wget -c https://rcn-ee.net/deb/barefs/wheezy/debian-7.4-bare-armhf-2014-04-01.tar.xz

Verify: 

~/
md5sum debian-7.4-bare-armhf-2014-04-01.tar.xz
5ac51a35cb1a483aea72642e48d3bb1f debian-7.4-bare-armhf-2014-04-01.tar.xz

Extract: 

~/
tar xf debian-7.4-bare-armhf-2014-04-01.tar.xz

Setup microSD/SD card

For these instruction, we are assuming: DISK=/dev/mmcblk0, "lsblk" is very useful for determining the device id.

export DISK=/dev/mmcblk0

Erase microSD/SD card:

sudo dd if=/dev/zero of=${DISK} bs=1M count=16

Create Partition Layout:

sudo sfdisk --in-order --Linux --unit M ${DISK} <<-__EOF__
1,48,0xE,*
,,,-
__EOF__

Format Partitions:

for: DISK=/dev/mmcblk0
sudo mkfs.vfat -F 16 ${DISK}p1 -n boot
sudo mkfs.ext4 ${DISK}p2 -L rootfs

for: DISK=/dev/sdX
sudo mkfs.vfat -F 16 ${DISK}1 -n boot
sudo mkfs.ext4 ${DISK}2 -L rootfs

Mount Partitions:

On some systems, these partitions may be auto-mounted...

sudo mkdir -p /media/boot/
sudo mkdir -p /media/rootfs/

for: DISK=/dev/mmcblk0
sudo mount ${DISK}p1 /media/boot/
sudo mount ${DISK}p2 /media/rootfs/
 
for: DISK=/dev/sdX
sudo mount ${DISK}1 /media/boot/
sudo mount ${DISK}2 /media/rootfs/

Install Bootloader

Copy MLO/u-boot.img to the boot partition

~/
sudo cp -v ./u-boot/MLO /media/boot/
sudo cp -v ./u-boot/u-boot.img /media/boot/

uEnv.txt based bootscript

Create "uEnv.txt" boot script: (nano uEnv.txt)

~/uEnv.txt
#mmcroot=/dev/mmcblk0p2 ro
#mmcrootfstype=ext4 rootwait fixrtc
 
##Un-comment to enable systemd in Debian Wheezy
#optargs=quiet init=/lib/systemd/systemd
 
#Boot the old non device tree kernel: (v3.7.x/v3.9.x)
#uenvcmd=run loadimage; run mmcargs; bootz ${loadaddr}

Copy uEnv.txt to the boot partition:

~/
sudo cp -v ./uEnv.txt /media/boot/

Install Kernel and Root File System

To help new users, since the kernel version can change on a daily basis. The kernel building scripts listed on this page will now give you a hint of what kernel version was built.

-----------------------------
Script Complete
eewiki.net: [user@localhost:~$ export kernel_version=3.X.Y-Z]
-----------------------------

Copy and paste that "export kernel_version=3.X.Y-Z" exactly as shown in your own build/desktop environment and hit enter to create an environment variable to be used later.

export kernel_version=3.X.Y-Z

Copy Root File System

~/
sudo tar xfvp ./*-*-*-armhf-*/armhf-rootfs-*.tar -C /media/rootfs/

Copy Kernel Files

Kernel Image:

~/
sudo cp -v ./stable-kernel/deploy/${kernel_version}.zImage /media/boot/zImage
(or if using the device tree v3.14.x branch)
sudo cp -v ./armv7-multiplatform/deploy/${kernel_version}.zImage /media/boot/zImage

Kernel Device Tree Binaries (v3.14.x branch):

~/
sudo mkdir -p /media/boot/dtbs/
sudo tar xfov ./armv7-multiplatform/deploy/${kernel_version}-dtbs.tar.gz -C /media/boot/dtbs/

Kernel Modules:

~/
sudo tar xfv ./stable-kernel/deploy/${kernel_version}-modules.tar.gz -C /media/rootfs/
(or if using the device tree v3.14.x branch)
sudo tar xfv ./armv7-multiplatform/deploy/${kernel_version}-modules.tar.gz -C /media/rootfs/

File Systems Table (/etc/fstab)

Edit: /etc/fstab

sudo nano /media/rootfs/etc/fstab
/etc/fstab
/dev/mmcblk0p2   /           auto   errors=remount-ro   0   1
/dev/mmcblk0p1   /boot/uboot auto   defaults            0   2

Networking

Edit: /etc/network/interfaces

sudo nano /media/rootfs/etc/network/interfaces

Add:

/etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

 

Serial Login

Debian

Edit: /etc/inittab

sudo nano /media/rootfs/etc/inittab

Add this at the end of: /etc/inittab

/etc/inittab
T2:23:respawn:/sbin/getty -L ttyO2 115200 vt102

Ubuntu

Create new file: /etc/init/serial.conf

sudo nano /media/rootfs/etc/init/serial.conf

With this content:

/etc/init/serial.conf
start on stopped rc RUNLEVEL=[2345]
stop on runlevel [!2345]

respawn
exec /sbin/getty 115200 ttyO2

 Remove microSD/SD card:

sync
sudo umount /media/boot
sudo umount /media/rootfs

FAQ

No Ethernet:

  • Check Power (aka use 5Volt DC Plug): The USB bus allows up to 100mA on initial connection and up to a max of 500mA can be *requested* by the end USB device. On the xM this is not enough to power the whole device and on the xM C there is an actual hardware switch to disable the smsc95xx usb hub/ethernet when powered by OTG (to prevent out of power crashes seen on the xM A/B with when users powered by OTG).
  • Check Ethernet Cable/Plug: Is the Ethernet Cable actually plugged into the Beagle and Router?
  • Check Modules: The smsc95xx kernel driver is usually built as an external module, double check that your kernel modules for this device are installed.

 

debian@devel:~$ find /lib/modules/`uname -r`/kernel/ | grep smsc95xx
/lib/modules/3.2.26-x14/kernel/drivers/net/usb/smsc95xx.ko
 
debian@devel:~$ lsmod | grep smsc95xx
smsc95xx               11302  0
 
sudo rmmod smsc95xx
sudo modprobe smsc95xx
sudo /etc/init.d/networking restart
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