Change in coreboot[master]: soc/intel: Calculate SF Mask#1 based on CAR_SF_MASKS_HAS_DOUBLE_TAGS_...

[Subrata Banik (Code Review)]

Hello build bot (Jenkins), Furquan Shaikh, Tim Wawrzynczak, Angel Pons, Patrick Rudolph,

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

https://review.coreboot.org/c/coreboot/+/51374

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

Change subject: soc/intel: Calculate SF Mask#1 based on CAR_SF_MASKS_HAS_DOUBLE_TAGS_THAN_DATA_WAYS
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soc/intel: Calculate SF Mask#1 based on CAR_SF_MASKS_HAS_DOUBLE_TAGS_THAN_DATA_WAYS

The assumption of SF Mask#1 calculation
IA32_CR_SF_QOS_MASK_1 = (1 << 2*number of ways of LLC) - 2^Number of data ways -1
is not always correct.

It depends on parts where tag ways are double than data ways (one way for tracking
data and one for SF). If any part has reduced tag ways but not the data ways,
this programming of MSR 0x1891 will run into error and eventually part won't boot.

Right now this new Kconfig is only selected on TGL.

TEST=Assume a case where LLC ways for code is 12 and data ways is 1

On TGL:
1.	0xC91 : 0xFFE
2.	0xC92 : 0x01
3.	0x1891: 0xFFFFFF

On ADL:
1.	0xC91 : 0xFFE
2.	0xC92 : 0x01
3.	0x1891: 0xFFF
4.	0x1892: 0x01
5.	0xc85 : 0x01

Change-Id: Ifd0b7e1a90cad4a4837adf6067fe8301dcd0a941
Signed-off-by: Subrata Banik 
---
M src/soc/intel/common/block/cpu/Kconfig
M src/soc/intel/common/block/cpu/car/cache_as_ram.S
M src/soc/intel/tigerlake/Kconfig
3 files changed, 12 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/74/51374/2