Bug#259292: debian-installer: IA64 ISOs should behave like EFI boot media

[dann frazier <dannf@hp.com>]

Package: debian-installer
Severity: normal

ia64 isos should be bootable via this path from the EFI Boot Manager:
  Boot Option Maintenace Menu
  -> Boot from a File
      -> Debian Inst [Acpi(HWP0002,0)/Pci(2|0)/Ata(Primary,Master)/CDROM(

I believe the magic for this is the bootia64.efi file, which is just a renamed
elilo.efi.  Here's what the boot image on a working CD looks like.

[ You can download a copy of this ISO here (the HP Enablement Kit):
  http://www.hp.com/hps/linux/lx_debian_download.html ]

/efi
/efi/boot
/efi/boot/linux.bin
/efi/boot/root.bin
/efi/boot/elilo.conf
/efi/boot/main.msg
/efi/boot/general.msg
/efi/boot/factory.msg
/efi/boot/golden.msg
/efi/boot/install.msg
/efi/boot/shell.msg
/efi/boot/debian.msg
/efi/boot/bootia64.efi
/elilo.conf
/elilo.efi

>From looking at a SuSE CD, I believe the top level elilo.conf & elilo.efi
files are redundant.  In this example, the linux.bin file and the root.bin
file are the kernel & initrd, respectively.  The elilo.conf looks like this:

# elilo config file for Linux Install & Recovery Kit CD
#
# Copyright (c) 2003 Hewlett-Packard Company
#

chooser=textmenu
delay=20
prompt

message=/efi/boot/main.msg
f1=/efi/boot/general.msg
f2=/efi/boot/factory.msg
f3=/efi/boot/install.msg
f4=/efi/boot/golden.msg
f5=/efi/boot/shell.msg
f6=/efi/boot/debian.msg

image=/efi/boot/linux.bin
        label=factory
        description="Recover factory pre-configured image"
        initrd=/efi/boot/root.bin
        root=/dev/ram
        append="installtype=FactoryImage raid=noautodetect"

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: ia64
Kernel: Linux 2.6.7-1-itanium-smp
Locale: LANG=C, LC_CTYPE=C