Table of Contents

General Build Information (Linux Dom0)

Linux Configurations Requirements

Linux needs to be built with the following options enabled:

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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):

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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:

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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:

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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