initramfs for xbox-linux

initramfs is an optional root filesystem for the Linux kernel.

See ramfs-rootfs-initramfs.txt for more information.

Dependencies

• A working xz compressor with a crc32 integrity check option.

Building

• $ cd xbox-linux-initramfs/
• $ ./build-initramfs.sh

Execution

• Use built initramfs in Cromwell.

Cromwell 2.40 can load a initramfs along with the kernel. See included linuxboot.cfg that is used with Cromwell.

Upon kernel boot, the init script will listen for a key press for 5 seconds to launch an interactive shell, if a keyboard is attached to the Xbox via a Xbox-to-USB conversion cable. If noswitchroot is added as a kernel parameter in linuxboot.cfg, you will have immediate access to the interactive shell.