soc/intel/fsp1.1: Implement postcar stage

This moves FSP1.1 to use postcar stage to tear down CAR.
On platforms with USE_GENERIC_FSP_CAR_INC the FSP header is found
during the postcar stage so there is no need to push to save it
in CAR global variables.

On FSP1.1 platforms with an open source CAR implementation (Skylake,
even though it still runs the FSP-T), the
soc/intel/common/blocks/cpu/car/exit_car.S code tears down CAR.

This also uses common functions to set up the MTRR to use after
CAR is torn down.

Test: build/boot on google/celes (BSW) and google/chell (SKL)

Change-Id: I2330993842aae9c1365230f0c6bd8a2449dc73a5
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30686
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/src/drivers/intel/fsp1_1/Makefile.inc b/src/drivers/intel/fsp1_1/Makefile.inc
index 953d1e4ffe..93f3b59d4b 100644
--- a/src/drivers/intel/fsp1_1/Makefile.inc
+++ b/src/drivers/intel/fsp1_1/Makefile.inc
@@ -28,7 +28,6 @@ romstage-y += fsp_util.c
 romstage-y += hob.c
 romstage-y += raminit.c
 romstage-y += romstage.c
-romstage-y += stack.c
 romstage-y += stage_cache.c
 romstage-$(CONFIG_MMA) += mma_core.c
 
@@ -45,6 +44,13 @@ CPPFLAGS_common += -Isrc/drivers/intel/fsp1_1/include
 
 cpu_incs-$(CONFIG_USE_GENERIC_FSP_CAR_INC) += $(src)/drivers/intel/fsp1_1/cache_as_ram.inc
 
+postcar-y += stage_cache.c
+ifneq ($(CONFIG_SKIP_FSP_CAR),y)
+postcar-y += temp_ram_exit.c
+postcar-y += exit_car.S
+endif
+postcar-y += fsp_util.c
+
 # Add the FSP binary to the cbfs image
 ifeq ($(CONFIG_HAVE_FSP_BIN),y)
 cbfs-files-y += fsp.bin