intel post-car: Separate files for setup_stack_and_mtrrs()

Have a common romstage.c file to prepare CAR stack guards.

MTRR setup around cbmem_top() is somewhat northbridge specific,
place stubs under northbridge for platrform that will move
to RELOCATABLE_RAMSTAGE.

Change-Id: I3d4fe4145894e83e5980dc2a7bbb8a91acecb3c6
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/15762
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/northbridge/intel/gm45/ram_calc.c b/src/northbridge/intel/gm45/ram_calc.c
index 9a65e19c4c..92f1a7f7e3 100644
--- a/src/northbridge/intel/gm45/ram_calc.c
+++ b/src/northbridge/intel/gm45/ram_calc.c
@@ -21,6 +21,7 @@
 #include <arch/io.h>
 #include <device/pci_def.h>
 #include <console/console.h>
+#include <cpu/intel/romstage.h>
 #include <cbmem.h>
 #include "gm45.h"
 
@@ -105,3 +106,8 @@ void *cbmem_top(void)
 {
 	return (void *) smm_region_start();
 }
+
+void *setup_stack_and_mtrrs(void)
+{
+	return (void*)CONFIG_RAMTOP;
+}