tree cb8a49dd0db6626dc135eb126b0950dc3c3c63e6
parent 837cd0bdf54dd954cd6aa43d250f75ab5db79617
author Mark Maule <maule@sgi.com> 1131731563 -0600
committer Tony Luck <tony.luck@intel.com> 1131737066 -0800

[IA64-SGI] set altix preferred console

Fix default VGA console on SN platforms.  Since SN firmware does not pass
enough ACPI information to identify VGA cards and the associated legacy IO/MEM
addresses, we rely on the EFI PCDP table.  Since the linux pcdp driver is
optional (and overridden if console= directives are used) SN duplicates a
portion of the pcdp scan code to identify if there is a usable console VGA
adapter.  Additionally, dup necessary pcdp related structs to avoid dragging
drivers/pcdp.h into a more public location.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>