Change in coreboot[master]: [WIP]arch/x86: Tear down CAR in ramstage

[Arthur Heymans (Code Review)]

Attention is currently required from: Raul Rangel, Jonathan Zhang, Kyösti Mälkki, Aaron Durbin, Patrick Rudolph, Jason Glenesk, Anjaneya "Reddy" Chagam, Marshall Dawson, Johnny Lin, Christian Walter, Morgan Jang, Tim Chu, Felix Held.
Hello build bot (Jenkins), Jason Glenesk, Raul Rangel, Anjaneya "Reddy" Chagam, Marshall Dawson, Jonathan Zhang, Johnny Lin, Morgan Jang, Kyösti Mälkki, Aaron Durbin, Patrick Rudolph, Felix Held,

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

https://review.coreboot.org/c/coreboot/+/54301

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

Change subject: [WIP]arch/x86: Tear down CAR in ramstage
......................................................................

[WIP]arch/x86: Tear down CAR in ramstage

Postcar is a 'full' stage to just run a few instructions to disable
CAR and setup MTRR for ramstage. This takes up a lot of place in ROM.
This functionality can be moved into ramstage.

Notes: Typically no caching is set up around cbmem so the LZMA
compressed ramstage is being decompressed in uncached memory, which is
likely to be slow.

Change-Id: I02e5017ab2b6a6fd30b37edad19165c2531c8fd1
Signed-off-by: Arthur Heymans 
---
M src/arch/x86/Kconfig
M src/arch/x86/c_start.S
M src/arch/x86/exit_car.S
A src/arch/x86/exit_car.inc
M src/arch/x86/postcar_loader.c
M src/cpu/x86/mtrr/Makefile.inc
M src/lib/program.ld
M src/mainboard/emulation/qemu-i440fx/Kconfig
M src/mainboard/emulation/qemu-i440fx/Makefile.inc
M src/soc/amd/common/block/cpu/car/Makefile.inc
M src/soc/intel/common/block/cpu/Makefile.inc
M src/soc/intel/xeon_sp/Kconfig
12 files changed, 56 insertions(+), 18 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/01/54301/4