intel/fsp_baytrail: Use smm_subregion()

Change-Id: I4e9de9c7f5decd784d881e5a733e995522be5226
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34757
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 15 insertions, 3 deletions

diff --git a/src/soc/intel/fsp_baytrail/memmap.c b/src/soc/intel/fsp_baytrail/memmap.c
index 77ba406507..7fec7f9764 100644
--- a/src/soc/intel/fsp_baytrail/memmap.c
+++ b/src/soc/intel/fsp_baytrail/memmap.c
@@ -15,13 +15,19 @@
  */
 
 #include <cbmem.h>
+#include <cpu/x86/smm.h>
 #include <soc/iosf.h>
-#include <soc/smm.h>
 #include <drivers/intel/fsp1_0/fsp_util.h>
+#include <types.h>
 
-uintptr_t smm_region_start(void)
+static uintptr_t smm_region_start(void)
 {
-	return (iosf_bunit_read(BUNIT_SMRRL) << 20);
+	return (iosf_bunit_read(BUNIT_SMRRL) & 0xFFFF) << 20;
+}
+
+static size_t smm_region_size(void)
+{
+	return CONFIG_SMM_TSEG_SIZE;
 }
 
 /** @brief get the top of usable low memory from the FSP's HOB list
@@ -38,3 +44,9 @@ void *cbmem_top(void)
 {
 	return find_fsp_reserved_mem(*(void **)CBMEM_FSP_HOB_PTR);
 }
+
+void smm_region(uintptr_t *start, size_t *size)
+{
+	*start = smm_region_start();
+	*size = smm_region_size();
+}