From b01ac7e26453677318776885d4ab870f59553ae6 Mon Sep 17 00:00:00 2001
From: Patrick Rudolph <patrick.rudolph@9elements.com>
Date: Sun, 26 Jul 2020 14:23:37 +0200
Subject: cpu/intel/common: Fill cpu voltage in SMBIOS tables

Introduce a weak function to let the platform code provide the processor
voltage in 100mV units.

Implement the function on Intel platforms using the MSR_PERF_STATUS msr.
On other platforms the processor voltage still reads as unknown.

Tested on Intel CFL. The CPU voltage is correctly advertised.

Change-Id: I31a7efcbeede50d986a1c096a4a59a316e09f825
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43904
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
---
 src/cpu/intel/haswell/Kconfig | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/cpu/intel/haswell')

diff --git a/src/cpu/intel/haswell/Kconfig b/src/cpu/intel/haswell/Kconfig
index fbfa71456b..0d3d132006 100644
--- a/src/cpu/intel/haswell/Kconfig
+++ b/src/cpu/intel/haswell/Kconfig
@@ -20,6 +20,7 @@ config CPU_SPECIFIC_OPTIONS
 	select CPU_INTEL_COMMON
 	select CPU_INTEL_COMMON_TIMEBASE
 	select HAVE_ASAN_IN_ROMSTAGE
+	select CPU_INTEL_COMMON_VOLTAGE
 
 config SMM_TSEG_SIZE
 	hex
-- 
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