Backported from fam15tn and fam16kb. This also implements GetHeapBase() to satisfy some requirements of HAVE_ACPI_RESUME for the following boards: amd/inagua amd/south_station amd/union_station asrock/e350m1 Change-Id: I488d063d4eabf4bf45bcbabd1e8f13b88b2ef401 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5658 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>