tree b941171377ad845e6869e72c46a2b72f703a050c
parent 8d9891928605201bfee603b576caba292c495aa4
author Bill Richardson <wfrichar@chromium.org> 1371059441 -0700
committer ChromeBot <chrome-bot@google.com> 1371070930 -0700

ec: Reserve correct ioport regions for Chrome OS EC to use

The LPC-based ChromeOS EC uses several ioport regions to communicate with
the AP. In order for the new unified userspace access method to work, we
need them to be reserved by the BIOS.

Before /proc/ioports shows:

  0800-0803
  0804-08ff

We'd like just a single 256-byte region at 0x800, but ASL can't handle that.
So this will work:

  0800-087f
  0880-08ff

BUG=chromium:249009
BRANCH=none
TEST=manual

  cat /proc/ioports, look for the correct regions.

Change-Id: I08ab8c3d3607ef2d43fc2b33bb20235679f2e2e4
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/58389
Reviewed-by: Stefan Reinauer <reinauer@google.com>