Attention is currently required from: Arthur Heymans, Jérémy Compostella, Patrick Rudolph.

Arthur Heymans uploaded patch set #4 to this change.

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smmstorev2: Load the communication buffer at SMM setup

This removes the runtime SMI call to set up the communication buffer
for SMMSTORE in favor of setting this buffer up during the installation
of the smihandler.

The reason is that it's less code in the handler and a time costly SMI
is also avoided in ramstage.

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I94dce77711f37f87033530f5ae48cb850a39341b
---
M Documentation/drivers/smmstorev2.md
M src/cpu/x86/smm/smm_module_handler.c
M src/cpu/x86/smm/smm_module_loader.c
M src/drivers/smmstore/ramstage.c
M src/drivers/smmstore/smi.c
M src/drivers/smmstore/store.c
M src/include/cpu/x86/smm.h
M src/include/smmstore.h
8 files changed, 51 insertions(+), 77 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/38/79738/4

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