Revision as of 18:52, 18 January 2007

Toolchain

• download the Chumby Toolchain to /usr
• extract

# tar zxvf gcc-3.3.2-glibc-2.3.2.tar.gz

• create Embedix dir and symlink

# mkdir -p /opt/Embedix/usr/local/arm-linux
# ln -s /usr /opt/Embedix/usr/local/arm-linux/gcc-3.3.2-glibc-2.3.2

• if it does not already exist, open /usr/bin/arm-linux-make with your favorite editor and enter:

#!/bin/sh
echo make ARCH=arm CROSS=arm-linux- CC=arm-linux-gcc AR=arm-linux-ar NM=arm-linux-nm RANLIB=arm-linux-ranlib CXX=arm-linux-g++ AS=arm-linux-as LD=arm-linux-ld STRIP=arm-linux-strip BUILDCC=gcc BUILD_CC=gcc CC_FOR_BUILD=gcc "$@"
exec make ARCH=arm CROSS=arm-linux- CC=arm-linux-gcc AR=arm-linux-ar NM=arm-linux-nm RANLIB=arm-linux-ranlib CXX=arm-linux-g++ AS=arm-linux-as LD=arm-linux-ld STRIP=arm-linux-strip BUILDCC=gcc BUILD_CC=gcc CC_FOR_BUILD=gcc "$@"

• set /usr/bin/arm-linux-make executable

# chmod +x /usr/bin/arm-linux-make

Kernel

The Alpha chumby runs a modified linux 2.4.20 kernel.

The BSP is distributed via a CD image, or from a link that is forthcoming.

Compiling the Kernel

• create the parent directory

mkdir ~/imx21
cd ~/imx21

• download copy the following iMX21 linux kernel source tarball to ~/imx21:

Linux-2.4.20.tar.bz2

• untar/unbzip the iMX21 linux kernel source

[root@vm_machine imx21]# tar xvjf linux-2.4.20.tar.bz2

• copy the following patch files to ~/imx21:

Patch_mx21_rel3.1
Patch_mx21_rel3.1_bugfix_20050923
Chumby_kernel.diff

• change dirs to linux-2.4.20 and apply patches:

[root@vm_machine imx21]# cd linux-2.4.20
[root@vm_machine linux-2.4.20]# cat ../Patch_mx21_rel3.1 |patch -p1
[root@vm_machine linux-2.4.20]# cat ../Patch_mx21_rel3.1_bugfix_20050923 |patch -p1
[root@vm_machine linux-2.4.20]# cat ../Chumby_kernel.diff |patch -p1

• copy the mx2.config to .config

[root@vm_machine linux-2.4.20]# cp mx2.config .config

• run 'make menuconfig' and exit, saving the file (this step is necessary in order to create the autoconf target)

[root@vm_machine linux-2.4.20]# make menuconfig

• run 'make dep' in order to create dependency tree

[root@vm_machine linux-2.4.20]# make dep

• build the image by running 'make Image'

[root@vm_machine linux-2.4.20]# make Image

• the following Image should be created:

[root@vm_machine linux-2.4.20]# ls -la arch/arm/boot/Image
-rwxr-xr-x    1 root     root      2176064 Apr 19 18:49 arch/arm/boot/Image