The ftp download server for the iso image of the ELDK CD is: http://ftp.denx.de/pub/eldk/4.2/ppc-linux-x86/iso/ppc-2008-04-01.iso
Before running the installation you have to create a direcotry for the installation. After that you can run the install skript.
tq@ubuntu:/media/ppc-2008-04-01$ sudo mkdir /opt/eldk tq@ubuntu:/media/ppc-2008-04-01$ sudo chown tq:tq /opt/eldk tq@ubuntu:/media/ppc-2008-04-01$ ./install -d /opt/eldk @arch@
After a successful run of the install skript you need to make the ELDK rootfs able to boot. Run the two skripts with sudo enabled.
tq@ubuntu:/media/ppc-2008-04-01$ sudo ./ELDK_MAKEDEV -d /opt/eldk/ tq@ubuntu:/media/ppc-2008-04-01$ sudo ./ELDK_FIXOWNER -d /opt/eldk/
The configuration of the environment variables $PATH and $CROSS_COMPILE should be written in the file /opt/eldk/setup_eldk.
tq@ubuntu:/opt/eldk$ echo 'PATH=$PATH:/opt/eldk/usr/bin:/opt/eldk/bin export CROSS_COMPILE="@arch@-" export ARCH=powerpc' > setup_eldk & chmod u+x setup_eldk
To use the ELDK toolchain for cross compiling you can simply source the created configuration file.
tq@ubuntu:~$ source /opt/eldk/setup_eldk
If you are using just this version of ELDK with only one architecture you can write the settings permanent in the file ~/.bashrc. Open your favourite texteditor and and append the following line.
source /opt/eldk/setup_eldk
Alternatively you can do it with a small command:
tq@ubuntu:~$ echo 'source /opt/eldk/setup_eldk' >> ~/.bashrc
Download the archive with the patches and unpack it (e.g. to ~/src/BSP/UBoot/patches). Download the basic version with git.
user@ubuntu:~/src$ git clone http://git.denx.de/u-boot.git user@ubuntu:~/src$ cd u-boot/ user@ubuntu:~/src/u-boot$ git checkout -b P2020 v2011.03 user@ubuntu:~/src/u-boot$ stg init user@ubuntu:~/src/u-boot$ stg import -t -s ~/src/BSP/UBoot/patches/series
The environment variables ARCH and CROSS_COMPILE were set according to section Configuring the ELDK Cross Compiler.
The following commands have to be executed: to configure and compile with make:
user@ubuntu:/.../src/u-boot$ make distclean user@ubuntu:/.../src/u-boot$ make TQMP2020_config user@ubuntu:/.../src/u-boot$ make all
Install the git source code management system.
user@ubuntu:~$ sudo apt-get install git-core stgit uboot-mkimage
Create a directory for the Linux source code:
tq@ubuntu:~$ mkdir ~/src tq@ubuntu:~$ cd ~/src
The current BSP (October 2011) is based on the 2.6.39 kernel of Denx software engineering. The base version of this source code you get from the Git server http://git.denx.de.
tq@ubuntu:~/src$ git clone http://git.denx.de/linux-denx.git tq@ubuntu:~/src$ cd linux-denx
Create local branch named p2020 with the source code of version DENX-v2.6.39:
tq@ubuntu:~/src/linux-denx$ git checkout -b p2020 DENX-v2.6.39
Unpack the archive with the patches into a local folder e.g. to ~/src/BSP/Linux/patches.
You can find the patches on the TQ product page.
The patches are now applied to the kernel sources:
tq@ubuntu:~/src/linux-denx$ stg init tq@ubuntu:~/src/linux-denx$ stg import -t -s ~/src/BSP/Linux/patches/series
If the ELDK has been configured according to the instructions the cross compilation toolchain is ready to compile the kernel.
Configure and build:
tq@ubuntu:~/src/linux-denx$ make 85xx/tqmp2020_defconfig tq@ubuntu:~/src/linux-denx$ make uImage
If the following error occurs when configuring the kernel source code:
*** Can't find default configuration "arch/x86/configs/85xx/tqmp2020_defconfig"!
then the environment is not configured correctly. For more information see section Installation of the ELDK Toolchain.
To load the kernel uImage in the directory arch/powerpc/boot, it has to be copied to the TFTP root directory. Depending on the configuration of the TFTP server it is e.g. /tftpboot. Starting from the source directory the uImage is copied to the /tftpboot directory with the following command.
tq@ubuntu:~/src/linux-denx$ cp arch/powerpc/boot/uImage /tftpboot