General Build Information (Linux Dom0)

Linux Configurations Requirements

Linux needs to be built with the following options enabled:
CONFIG_XEN
CONFIG_HVC_DRIVER
CONFIG_HVC_XEN
These options are all enabled by default in PetaLinux projects.

PetaLinux rootfs Configuration Requirements

Petalinux rootfs options that need to be enabled (these are enabled by default):
CONFIG_ROOTFS_COMPONENT_APPS_NAME_XENTOOLS
CONFIG_ROOTFS_COMPONENT_APPS_NAME_XEN
CONFIG_ROOTFS_COMPONENT_APPS_NAME_GETTYBAUD
These options are all enabled by default in PetaLinux projects.

XEN Device Tree Requirements

The DTB file for XEN, should be the same as for plain Linux, with a few entries added to the chosen node. A working XEN DTB will be created by PetaLinux.
The xen,dom0-bootargs corresponds to the Linux Kernel command line.
Here is an example:
chosen {
    #address-cells = <0x1>;
    #size-cells = <0x1>;
    bootargs = "console=ttyPS0,115200 earlyprintk=cdns,uart,0xFF000000 rdinit=/sbin/init";
    xen,xen-bootargs = "console=dtuart dtuart=serial0 dom0_mem=256M bootscrub=0 timer_slop=0";
    xen,dom0-bootargs = "rdinit=/bin/sh console=hvc0 earlycon=xen earlyprintk=xen";
    dom0 {
        compatible = "xen,linux-zimage", "xen,multiboot-module";
        reg = <0x00080000 0x3100000>;
    };
};
If editing the DTB is required, convert the xen.dtb to .dts and back to dtb, using the following:
dtc -I dtb -O dts -o xen.dts xen.dtb
dtc -I dts -O dtb -o xen.dtb xen.dts
For more details on running the Xen Hypervisor, please refer http://dornerworks.com/services/xilinxxen

Additional Commercial Support and Professional Services

For more complex Dom0 topics such as the introduction of alternative non-Linux Dom0 OS, or optimizations in Dom0 Linux to improve solution boot time, footprint or performance; Xilinx recommends our Premier Partner DornerWorks .

Related Links

Petalinux Tools Reference Guide
http://dornerworks.com/services/xilinxxen