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>
4c7bc8db74