EBC Exercise 08 Installing Development Tools 3.8

See EBC Exercise 08 Installing Development Tools 3.2 if you are working with the 3.2 kernel.

Early in the class most of the exercises we will do will all run on the BeagleBoard. You'll be able to edit (gedit), compile (gcc) and run all on the Beagle. Later, when we start compiling the kernel or the boot loader, (U-boot) you will need to cross compile on a Linux machine and copy the results to the Beagle.

The purpose of this exercise is to install all the tools needed for compiling on your host so they will be ready when you need them.

Instructions for building Ångström are given here; however there are a few changes you have to make. Here's what I did.

Tip: Run this exercise using a wired connection if you can. The Ubuntu wireless driver can be finicky, and if it stops working you'll have to restart some of this.

The 3.8 Kernel
Make sure you installed the cross compiler (EBC Exercise 08a Cross-Compiling) before doing this exercise.

Note taken from Beaglebone: Adding USB Wi-Fi & Building a Linux Kernel starting around 4 minutes and ending around 21 minutes. Uses kernel from Robert C. Nelson's BeagleBone page.

host$ git clone git://github.com/RobertCNelson/linux-dev.git host$ git git checkout origin/am33x-v3.8 -b am33x-v3.8 host$ time git clone git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git (21 minutes) host$ cp system.sh.sample system.sh.sample host$ diff system.sh* 15c15 < CC=arm-linux-gnueabi- --- > #CC=arm-linux-gnueabi- 21c21 < LINUX_GIT=~/BeagleBoard/linux-stable/ --- > #LINUX_GIT=/home/user/linux-stable/ 31c31 < ZRELADDR=0x80008000 --- > #ZRELADDR=0x80008000

Note: git git checkout ... should be git checkout origin/am33x-v3.8 -b am33x-v3.8. Also, after the clone you most likely need to cd into linux-dev. Now get some more tools. host$ sudo apt-get install -y uboot-tools ccache libncurses5-dev host$ sudo apt-get install build-essential host$ sudo apt-get install device-tree-compiler lzop u-boot-tools ia32-libs Then build the kernel. host$ ./build_kernel.sh + Detected build host [Ubuntu 12.04.2 LTS] Debian/Ubuntu/Mint: missing dependicies, please install: - sudo apt-get update sudo apt-get install libncurses5-dev - * Failed dependency check I fixed this error by editing  and commenting out the line: It was looking for amd64 in the  listing and it wasn't appearing.
 * 1) 	dpkg -l | grep libncurses5-dev | grep ${deb_arch} >/dev/null || deb_pkgs="${deb_pkgs}libncurses5-dev "

Now install by inserting the SD to be installed on into your host machine and run: host$ ./tools/install_kernel.sh

Mine failed because there wasn't enough space on the VFAT partition for uImage, however uImage isn't needed there, so I just editted  and commented out line 160 This keeps it from installing on the VFAT partition.
 * 1) 			mmc_partition_discover

Minimal Ubuntu Build
(The video says rcn-ee.net/deb/rootfs/oneiric, but it isn't there.) host$ wget http://rcn-ee.net/deb/rootfs/raring/ubuntu-raring-console-armhf-2013-03-28.tar.xz host$ xz -d ubuntu-raring-console-armhf-2013-03-28.tar.xz host$ tar -xf ubuntu-raring-console-armhf-2013-03-28.tar Put the SD card in a reader for your host and... host$ './setup_sdcard.sh --mmc /dev/sdc'' --uboot bone

Ian's Notes: The builds are being updated constantly, so go to http://rcn-ee.net/deb/rootfs/raring/ and find the latest build, if the one above does not work.

DAS U-boot
These instructions came from Robert C Nelson's eewiki.net.

download
While we're at it, let's get the boot loader we'll be using. It takes some 40 seconds.

host$ cd ~/BeagleBoard host$ git clone git://git.denx.de/u-boot.git host$ cd u-boot/ host$ git checkout v2013.04 -b tmp

U-Boot Patches
host$ wget https://raw.github.com/eewiki/u-boot-patches/master/v2013.04/0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch host$ patch -p1 < 0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch

compile
Now configure and build. The first time takes some 1.5 minutes. After that it's only 5 seconds or so. host$ source ~/crossCompileEnv.sh host$ make distclean host$ make am335x_evm_config host$ make

install
host$ scp u-boot.img root@beagle:. beagle$ mkdir /media/mmcblk0p1 beagle$ mount /dev/mmcblk0p1 /media/mmcblk0p1 beagle$ cd /media/mmcblk0p1 beagle$ mv u-boot.img u-boot.img.orig # Save the working u-boot beagle$ cp ~/u-boot.img u-boot.img.new beagle$ cp u-boot.img.new u-boot.img Once installed you are ready for u-boot work.