Attention is currently required from: Angel Pons, Máté Kukri, Paul Menzel, Varshit Pandya.

Máté Kukri uploaded patch set #10 to this change.

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The following approvals got outdated and were removed: Code-Review+2 by Angel Pons, Verified+1 by build bot (Jenkins)

mb/dell/optiplex_9020: Implement late HWM initialization

There are 4 different chassis types specified by vendor firmware, each
with a slightly different HWM configuration.

The chassis type to use is determined at runtime by reading a set of
4 PCH GPIOs: 70, 38, 17, and 1.

Additionally vendor firmware also provides an option to run the fans at
full speed. This is substituted with a coreboot nvram option in this
implementation.

This was tested to make fan control work on my OptiPlex 7020 SFF.

NOTE: This is superficially similar to the OptiPlex 9010's SCH5545
however the OptiPlex 9020's SCH5555 does not use externally
programmed EC firmware.

Change-Id: Ibdccd3fc7364e03e84ca606592928410624eed43
Signed-off-by: Mate Kukri <kukri.mate@gmail.com>
---
M src/mainboard/dell/optiplex_9020/Makefile.mk
M src/mainboard/dell/optiplex_9020/bootblock.c
M src/mainboard/dell/optiplex_9020/cmos.default
M src/mainboard/dell/optiplex_9020/cmos.layout
M src/mainboard/dell/optiplex_9020/mainboard.c
A src/mainboard/dell/optiplex_9020/sch5555_ec.c
A src/mainboard/dell/optiplex_9020/sch5555_ec.h
7 files changed, 465 insertions(+), 24 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/29/81529/10

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