Xen users - Sep 2013 - UEFI boot - no console will be available to OS

I''m trying to run Xen on Arch Linux with UEFI boot. I followed the
steps for Xen in the Arch Linux Wiki https://wiki.archlinux.org/index.php/Xen

I get the following when attempting to boot:

Loading Xen 4.2.2 ...
WARNING: no console will be available to the OS
Loading Linux linux ...
Loading initial ramdisk ...

Unfortunately there is no console so I cannot determine what has gone wrong, nor
can I ssh in.

Any advice on how to diagnose this boot problem would be welcome.

During the grub boot I can select the arch linux boot image or the xen boot
image.

/boot directory:

efi/
grub/
initramfs-linux-fallback.img
initramfs-linux.img
vmlinuz-linux
xen-4.2.2.gz
xen-syms-4.2.2


grub.cfg:


### BEGIN /etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry   save_env next_entry
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}

function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_gpt
insmod ext2
set root=''hd0,gpt2''
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2
--hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 
0b8cebb6-e937-402c-b9e1-16d4e422b590
else
  search --no-floppy --fs-uuid --set=root 0b8cebb6-e937-402c-b9e1-16d4e422b590
fi
    font="/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
fi
terminal_input console
terminal_output gfxterm
set timeout=5
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/09_xen ###
menuentry ''Xen 4.2.2 / Arch GNU/Linux, with Linux linux''
--class xen --class arch --class gnu-linux --class gnu --class os {
        insmod part_gpt
        insmod ext2
        set root=''hd0,gpt2''
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2
--hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 
0b8cebb6-e937-402c-b9e1-16d4e422b590
        else
          search --no-floppy --fs-uuid --set=root
0b8cebb6-e937-402c-b9e1-16d4e422b590
        fi
       echo    ''Loading Xen 4.2.2 ...''
       multiboot       /boot/xen-4.2.2.gz /boot/xen-4.2.2.gz dom0_mem=4096M
xsave=1
       echo    Loading Linux linux ...
       module  /boot/vmlinuz-linux /boot/vmlinuz-linux
root=UUID=0b8cebb6-e937-402c-b9e1-16d4e422b590 rw console=tty0
       echo    "Loading initial ramdisk ..."
       module  /boot/initramfs-linux.img
}
### END /etc/grub.d/09_xen ###

### BEGIN /etc/grub.d/10_linux ###
menuentry ''Arch Linux, with Linux core repo kernel'' --class
arch --class gnu-linux --class gnu --class os $menuentry_id_option
''gnulinux-core repo
kernel-true-0b8cebb6-e937-402c-b9e1-16d4e422b590'' {
        load_video
        set gfxpayload=keep
        insmod gzio
        insmod part_gpt
        insmod ext2
        set root=''hd0,gpt2''
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2
--hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 
0b8cebb6-e937-402c-b9e1-16d4e422b590
        else
          search --no-floppy --fs-uuid --set=root
0b8cebb6-e937-402c-b9e1-16d4e422b590
        fi
        echo    ''Loading Linux core repo kernel ...''
        linux   /boot/vmlinuz-linux
root=UUID=0b8cebb6-e937-402c-b9e1-16d4e422b590 rw  rootfstype=ext4
systemd.unit-multi-user.target
        echo    ''Loading initial ramdisk ...''
        initrd  /boot/initramfs-linux.img
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the ''exec tail'' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###


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