Change in coreboot[master]: soc/intel/apollolake: Use SMM library to get tseg region information

[Subrata Banik (Code Review)]

Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/21291

Change subject: soc/intel/apollolake: Use SMM library to get tseg region information
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soc/intel/apollolake: Use SMM library to get tseg region information

This patch uses smm common library function to get tseg base
address and size. Hence removing definitions of smm_region()
from soc directory.

BRANCH=none
BUG=b:63974384
TEST=Build and boot reef successfully.

Change-Id: I091ca90cf576c0da35cf3fe010f8c22a18ef82d9
Signed-off-by: Subrata Banik 
---
M src/soc/intel/apollolake/cpu.c
M src/soc/intel/apollolake/memmap.c
M src/soc/intel/apollolake/romstage.c
3 files changed, 8 insertions(+), 23 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/91/21291/1

diff --git a/src/soc/intel/apollolake/cpu.c b/src/soc/intel/apollolake/cpu.c
index 98cd23a..0401696 100644
--- a/src/soc/intel/apollolake/cpu.c
+++ b/src/soc/intel/apollolake/cpu.c
@@ -178,7 +178,7 @@
    const uint32_t rmask = ~((1 << 12) - 1);

/* Initialize global tracking state. */
-	smm_region(&smm_base, &smm_size);
+	smm_region_info(&smm_base, &smm_size);
    smm_subregion(SMM_SUBREGION_HANDLER, &handler_base, &handler_size);

relo_attrs.smbase = (uint32_t)smm_base;
diff --git a/src/soc/intel/apollolake/memmap.c b/src/soc/intel/apollolake/memmap.c
index c54423c..f9a484a 100644
--- a/src/soc/intel/apollolake/memmap.c
+++ b/src/soc/intel/apollolake/memmap.c
@@ -28,40 +28,24 @@
 #include <cbmem.h>
 #include <device/pci.h>
 #include <fsp/memmap.h>
+#include <intelblocks/smm.h>
 #include <soc/systemagent.h>
 #include <soc/pci_devs.h>

-static uintptr_t smm_region_start(void)
-{
-	return ALIGN_DOWN(pci_read_config32(SA_DEV_ROOT, TSEG), 1*MiB);
-}
-
-static size_t smm_region_size(void)
-{
-	uintptr_t smm_end =
-		ALIGN_DOWN(pci_read_config32(SA_DEV_ROOT, BGSM), 1*MiB);
-	return smm_end - smm_region_start();
-}
-
 void *cbmem_top(void)
 {
-	return (void *)smm_region_start();
-}
-
-void smm_region(void **start, size_t *size)
-{
-	*start = (void *)smm_region_start();
-	*size = smm_region_size();
+	return (void *)sa_get_tseg_base();
 }

int smm_subregion(int sub, void **start, size_t *size)
 {
    uintptr_t sub_base;
    size_t sub_size;
+	void *smm_base;
    const size_t cache_size = CONFIG_SMM_RESERVED_SIZE;

-	sub_base = smm_region_start();
-	sub_size = smm_region_size();
+	smm_region_info(&smm_base, &sub_size);
+	sub_base = (uintptr_t)smm_base;

assert(sub_size > CONFIG_SMM_RESERVED_SIZE);

diff --git a/src/soc/intel/apollolake/romstage.c b/src/soc/intel/apollolake/romstage.c
index 2017d84..605a75b 100644
--- a/src/soc/intel/apollolake/romstage.c
+++ b/src/soc/intel/apollolake/romstage.c
@@ -33,6 +33,7 @@
 #include <fsp/memmap.h>
 #include <fsp/util.h>
 #include <intelblocks/cpulib.h>
+#include <intelblocks/smm.h>
 #include <intelblocks/systemagent.h>
 #include <intelblocks/pmclib.h>
 #include <reset.h>
@@ -269,7 +270,7 @@
    * when relocating the SMM handler as well as using the TSEG
    * region for other purposes.
    */
-	smm_region(&smm_base, &smm_size);
+	smm_region_info(&smm_base, &smm_size);
    tseg_base = (uintptr_t)smm_base;
    postcar_frame_add_mtrr(&pcf, tseg_base, smm_size, MTRR_TYPE_WRBACK);