tree cd7f335358b268838dcd926c607d8289368afec1
parent 52e56e84796d8b4def9341f2302b355f059added
author Tim Chen <tim-chen@quanta.corp-partner.google.com> 1588139797 +0800
committer Patrick Georgi <pgeorgi@google.com> 1588314434 +0000

mb/google/hatch/vr/puff: Add psys_pmax calculation

This patch adds psys_pmax calculation. There are two types of power
sources. One is barrel jack and the other is USB TYPE-C. The voltage
level is fixed for a barrel jack while TYPE-C may vary depending
on power ratings. We need to get voltage information from
EC and calculate correct psys_pmax value. The psys_pmax needs to be
set before FSP-S since FSP-S will handle the setting passing to pcode,
so move the routine ahead to variant_ramstage_init.

BUG=b:151972149
TEST=emerge-puff coreboot chromeos-bootimage
     check firmware log and ensure psys_pmax is passed to FSP
     check the data from dump_intel_rapl_consumption in the OS and
     ensure the power data is close to an external power meter.

Change-Id: Iff767d4b44a01e766258345545438a54a16d1af5
Signed-off-by: Tim Chen <tim-chen@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40828
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>