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This is a page about TI's Cortex-A8 based; BeagleBoard and BeagleBoard xM.

Availability

Boards:
BeagleBoard Cx at Digi-Key
BeagleBoard xM at Digi-Key
CircuitCo 7inch LCD at Digi-Key

Basic Requirements

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.

Debian based (deb)

extra

pkgs: (sudo apt-get update ; sudo apt-get install xyz)

Ubuntu 14.04 -> 15.10

 

libc6:i386 libstdc++6:i386 libncurses5:i386 zlib1g:i386

Debian 7, 8 & 9 (Stretch)

sudo dpkg --add-architecture i386

libc6:i386 libstdc++6:i386 libncurses5:i386 zlib1g:i386

Red Hat based (rpm)

extra

pkgs: (yum install xyz)

Red Hat/Centos/Fedora

 

libstdc++.i686 ncurses-devel.i686 zlib.i686

Download/Extract:

~/
wget -c https://releases.linaro.org/14.09/components/toolchain/binaries/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz
tar xf gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz
export CC=`pwd`/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_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-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09) 4.9.2 20140904 (prerelease)
Copyright (C) 2014 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
eewiki.net patch archive: https://github.com/eewiki/u-boot-patches
Download:

~/
git clone git://git.denx.de/u-boot.git
cd u-boot/
git checkout v2015.10 -b tmp

Patches:

~/u-boot
wget -c https://rcn-ee.com/repos/git/u-boot-patches/v2015.10/0001-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_defconfig
make ARCH=arm CROSS_COMPILE=${CC}

Linux Kernel

This script will build the kernel, modules, device tree binaries and copy them to the deploy directory.
Download:

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

For v4.1.x (Longterm):

~/armv7-multiplatform
git checkout origin/v4.1.x -b tmp

For v4.1.x-rt (Real-Time Linux):

~/armv7-multiplatform
git checkout origin/v4.1.x-rt -b tmp

For v4.2.x (Stable):

~/armv7-multiplatform
git checkout origin/v4.2.x -b tmp

For v4.3.x (Prepatch):

~/armv7-multiplatform
git checkout origin/v4.3.x -b tmp

Build:

~/armv7-multiplatform/
./build_kernel.sh

Root File System

Debian 8

User

Password

debian

temppwd

root

root

Download:

~/
wget -c https://rcn-ee.com/rootfs/eewiki/minfs/debian-8.2-minimal-armhf-2015-09-07.tar.xz

Verify:

~/
md5sum debian-8.2-minimal-armhf-2015-09-07.tar.xz
406cd5193f4ba6c2694e053961103d1a  debian-8.2-minimal-armhf-2015-09-07.tar.xz

Extract:

~/
tar xf debian-8.2-minimal-armhf-2015-09-07.tar.xz

Ubuntu 14.04 LTS

User

Password

ubuntu

temppwd

Download:

~/
wget -c https://rcn-ee.com/rootfs/eewiki/minfs/ubuntu-14.04.3-minimal-armhf-2015-09-07.tar.xz

Verify:

~/
md5sum ubuntu-14.04.3-minimal-armhf-2015-09-07.tar.xz
b119ede365e7e7f6d380a5c16592f312  ubuntu-14.04.3-minimal-armhf-2015-09-07.tar.xz

Extract:

~/
tar xf ubuntu-14.04.3-minimal-armhf-2015-09-07.tar.xz

Root File System (small flash)

A Root File System around 100Mb in size, for flash applications.

Debian 8 (small flash)

User

Password

debian

temppwd

root

root

Download:

~/
wget -c https://rcn-ee.com/rootfs/eewiki/barefs/debian-8.2-bare-armhf-2015-09-07.tar.xz

Verify:

~/
md5sum debian-8.2-bare-armhf-2015-09-07.tar.xz
033a436bcb13b8c98dd7fa4d3ec37503  debian-8.2-bare-armhf-2015-09-07.tar.xz

Extract:

~/
tar xf debian-8.2-bare-armhf-2015-09-07.tar.xz

Setup microSD card

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

export DISK=/dev/mmcblk0

Erase partition table/labels on microSD card:

sudo dd if=/dev/zero of=${DISK} bs=1M count=20

Create Partition Layout:
With util-linux v2.26, sfdisk was rewritten and is now based on libfdisk.

sudo sfdisk --version
sfdisk >= 2.26.x
sudo sfdisk ${DISK} <<-__EOF__
1M,12M,0xE,*
,,,-
__EOF__
sfdisk <= 2.25.x
sudo sfdisk --in-order --Linux --unit M ${DISK} <<-__EOF__
1,12,0xE,*
,,,-
__EOF__

Format Partition:

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 Partition:
On most systems these partitions may will 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/

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=4.X.Y-Z]
-----------------------------

Copy and paste that "export kernel_version=4.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=4.X.Y-Z

Copy Root File System

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

Set uname_r in /boot/uEnv.txt

~/
sudo sh -c "echo 'uname_r=${kernel_version}' >> /media/rootfs/boot/uEnv.txt"

Copy Kernel Image

Kernel Image:

~/
sudo cp -v ./armv7-multiplatform/deploy/${kernel_version}.zImage /media/rootfs/boot/vmlinuz-${kernel_version}

Copy Kernel Device Tree Binaries

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

Copy Kernel Modules

~/
sudo tar xfv ./armv7-multiplatform/deploy/${kernel_version}-modules.tar.gz -C /media/rootfs/

File Systems Table (/etc/fstab)

/etc/fstab
sudo sh -c "echo '/dev/mmcblk0p2  /  auto  errors=remount-ro  0  1' >> /media/rootfs/etc/fstab"
sudo sh -c "echo '/dev/mmcblk0p1  /boot/uboot  auto  defaults  0  2' >> /media/rootfs/etc/fstab"

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

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

Comments

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