Change in coreboot[master]: soc/intel/common: Calculate and configure SF Mask 2

[Subrata Banik (Code Review)]

Attention is currently required from: Furquan Shaikh, Tim Wawrzynczak, Subrata Banik, Arthur Heymans, Patrick Rudolph.
Hello build bot (Jenkins), Furquan Shaikh, Tim Wawrzynczak, Arthur Heymans, Patrick Rudolph,

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

https://review.coreboot.org/c/coreboot/+/56717

to look at the new patch set (#4).

Change subject: soc/intel/common: Calculate and configure SF Mask 2
......................................................................

soc/intel/common: Calculate and configure SF Mask 2

As per TGL EDS, two ways will be controlled with one bit of SF QoS
register hence, this patch introduces SF_MASK_2BITS_PER_WAY Kconfig to
allow SoC users to select SF_MASK_2BITS_PER_WAY to follow the EDS
recommendation.

Calculate SF masks:
1. if CONFIG_SF_MASK_2BITS_PER_WAY:
        a. data_ways = data_ways / 2

Also, program SF Mask#2 using below logic:
2. Set SF_MASK_2 = (1 << data_ways) - 1

Change-Id: I442bed75f13d26f357cfb32c54c5fe9efa4b474b
Signed-off-by: Subrata Banik 
---
M src/include/cpu/x86/msr.h
M src/soc/intel/common/block/cpu/Kconfig
M src/soc/intel/common/block/cpu/car/cache_as_ram.S
3 files changed, 35 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/17/56717/4