Difference between revisions of "Hacking Linux for chumby"
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[root@vm_machine linux-2.4.20]# ls -la arch/arm/boot/Image | [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 | -rwxr-xr-x 1 root root 2176064 Apr 19 18:49 arch/arm/boot/Image | ||
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Revision as of 23:17, 20 October 2006
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:
- 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