NFS Root

HOW TO WIP: This tutorial assumes that you already have Xell and a toolchain.

Compile the kernel that you want to use

Get the kernel sources

You can get them from kernel.org 2.6.33 not 2.6.33.1 at time of writing (in the future this might change)

Get the patches and the kernel config

You can get them from here.

NOTE: At the time of writing v0.10 was the latest make sure that your kernel config and your patch are the same version.

Extract the kernel

With the following command:

tar -xvjf linux-2.6.33.tar.bz2

Patch the kernel

With the following commands:

cd linux-2.6.33

patch -p1 --dry-run <../patch-2.6.33-xbox0.10.diff ## assumes that the patch is in the directory above the kernel folder that you just changed into

1. 1. pause here make sure there were no errors is not do the following

patch -p1 <../patch-2.6.33-xbox0.10.diff

Edit the kernel config file

Look for a line simular to this:

CONFIG_CMDLINE="root=/dev/nfs video=xenonfb nfsroot=192.168.1.100:/nfs ip=dhcp panic=60"

Edit the NFSroot to be your IP address.

Build the kernel

Do the following:

make ARCH=powerpc CROSS_COMPILE=/usr/local/xenon/bin/xenon- menuconfig

Load up your config file that you just edited and then exit and run the following command:

make ARCH=powerpc CROSS_COMPILE=/usr/local/xenon/bin/xenon- all

You might get an error if so you might need to edit arch/powerpc/kernel/pci_64.c line 149 and change the lh to llh both occurrences.

Rerun the last command and you should have a kernel. It will be in arch/powerpc/boot/zImage.xenon

Configure Xell to boot from your computer via tftp

To do this you need to recompile Xell. I assume that you already have a toolchain, I used the one from libxenon. You will need to edit the Xell source file network.c changing the default IP address to your IP address. Then compile Xell.

Setup tftp

I used atftp on gentoo just type emerge -v atftp. Then nano /etc/conf.d/atftp I changed mine to look like this TFTPD_ROOT="/tftpboot" just edit the TFTPD_ROOT= line and leave the rest the way that it is as it is already correct. When done with that make the directory /tftpboot and put your kernel into it and name it xenon.

You can try to boot now but you will get an error from the kernel saying that it cant find your nfs so we will set that up now.

Install a NFS Server

To do this you may have to edit your kernel on your host machine to enable nfs. This is what I followed to set up NFS so here is the link. The only difference is that your /etc/exports should look like this /nfs 192.168.1.*(rw,no_root_squash,no_subtree_check,async) change the IP scheme to fit your network.

Make the /nfs directory and copy the image.squashfs into it. Then exrtract it as root by doing unsquashfs image.squashfs. Then copy everything from the squashfs-root folder to /nfs by typing cd /nfs/squashfs-root && cp * -vaR /nfs

Now if everything worked correctly you should be able to boot your 360 via NFS.