[coreboot-gerrit] Change in coreboot[master]: soc/amd/picasso: Add generic SMU service request

[Felix Held (Code Review)]

Hello build bot (Jenkins), Jason Glenesk, Raul Rangel, Furquan Shaikh, Patrick Georgi, Martin Roth, Marshall Dawson, Marshall Dawson,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/41625

to look at the new patch set (#2).

Change subject: soc/amd/picasso: Add generic SMU service request
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soc/amd/picasso: Add generic SMU service request

Add a new feature that allows messages to be sent to the SMU.  The
offsets of the PCI config index/data indirect registers have been
documented for prior generation devices.

The index/data pair is used access a command register, a response,
and six argument values.

BUG=b:153264473
TEST=Verify service can be used to take the system into S3

Change-Id: Ide431aa976cb2f8bdc248cb08aa0724a9596ac5a
Signed-off-by: Marshall Dawson 
Signed-off-by: Felix Held 
Reviewed-on: https://chromium-review.googlesource.com/2161796
Reviewed-by: Furquan Shaikh 
---
M src/soc/amd/picasso/Makefile.inc
A src/soc/amd/picasso/include/soc/smu.h
A src/soc/amd/picasso/smu.c
3 files changed, 129 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/25/41625/2