baytrail: Add function to read top of low memory
authorDuncan Laurie <dlaurie@chromium.org>
Tue, 5 Nov 2013 01:02:45 +0000 (17:02 -0800)
committerAaron Durbin <adurbin@google.com>
Wed, 30 Apr 2014 21:11:21 +0000 (23:11 +0200)
commit1f52f51f4e6dd2c97faa46e3287460d8b2ad335b
treee45fd6e6fe39da8fd3e36bce9f14bf07a2b41c0e
parent7fbe20bd2c3b8e0bcb667f5b1a07b80402fa8504
baytrail: Add function to read top of low memory

The top of low memory is also the start of the region where
PCIe resources are allocated.  This needs to be passed in
ACPI but is only readable from IOSF.

BUG=chrome-os-partner:23505
BRANCH=rambi
TEST=build and boot on rambi

Change-Id: Iad95335f72dc3e35b837bedb8d52d388c861a330
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/175625
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/4935
Tested-by: build bot (Jenkins)
src/soc/intel/baytrail/baytrail/iomap.h
src/soc/intel/baytrail/northcluster.c