[coreboot-gerrit] Change in coreboot[master]: arch/x86: Add postcar_frame_setup_top_of_dram_usage() API

[Subrata Banik (Code Review)]

Hello Kyösti Mälkki, Aaron Durbin, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/34995

to look at the new patch set (#3).

Change subject: arch/x86: Add postcar_frame_setup_top_of_dram_usage() API
......................................................................

arch/x86: Add postcar_frame_setup_top_of_dram_usage() API

This patch adds new API for enabling caching for the TSEG region
and setting up required MTRR for next stage.

Also helps to save additional ~6ms of booting time in normal boot
and s3 resume on CML-hatch.

Change-Id: I59432c02e04af1b931d77de3f6652b0327ca82bb
Signed-off-by: Kyösti Mälkki 
Signed-off-by: Subrata Banik 
---
M src/arch/x86/include/arch/cpu.h
M src/arch/x86/postcar_loader.c
2 files changed, 36 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/95/34995/3