[coreboot-gerrit] Change in coreboot[master]: soc/intel/skylake: Use SA library to get smm region information

[Subrata Banik (Code Review)]

Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/21290

Change subject: soc/intel/skylake: Use SA library to get smm region information
......................................................................

soc/intel/skylake: Use SA library to get smm region information

This patch uses system agent common library to
know tseg region start and size. Unable to remove smm_region()
function from soc code as SMM common library
is not yet available for skylake use.

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

Change-Id: If98b65805753db2c30d6fea29e401a17cef39799
Signed-off-by: Subrata Banik 
---
M src/soc/intel/skylake/memmap.c
1 file changed, 7 insertions(+), 23 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/90/21290/1

diff --git a/src/soc/intel/skylake/memmap.c b/src/soc/intel/skylake/memmap.c
index 1ccaf1d..229afa7 100644
--- a/src/soc/intel/skylake/memmap.c
+++ b/src/soc/intel/skylake/memmap.c
@@ -38,27 +38,10 @@
    return 8*MiB;
 }

-/* Returns base of requested region encoded in the system agent. */
-static inline uintptr_t system_agent_region_base(size_t reg)
-{
-	/* All regions concerned for have 1 MiB alignment. */
-	return ALIGN_DOWN(pci_read_config32(SA_DEV_ROOT, reg), 1*MiB);
-}
-
-static inline uintptr_t smm_region_start(void)
-{
-	return system_agent_region_base(TSEG);
-}
-
-static inline size_t smm_region_size(void)
-{
-	return system_agent_region_base(BGSM) - smm_region_start();
-}
-
 void smm_region(void **start, size_t *size)
 {
-	*start = (void *)smm_region_start();
-	*size = smm_region_size();
+	*start = (void *)sa_get_tseg_base();
+	*size = sa_get_tseg_size();
 }

/*
@@ -76,11 +59,12 @@
 {
    uintptr_t sub_base;
    size_t sub_size;
+	void *smm_base;
    const size_t ied_size = CONFIG_IED_REGION_SIZE;
    const size_t cache_size = CONFIG_SMM_RESERVED_SIZE;

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

switch (sub) {
    case SMM_SUBREGION_HANDLER:
@@ -170,7 +154,7 @@
    	dram_base -= sa_get_gsm_size();
    }
    /* Get TSEG size */
-	dram_base -= smm_region_size();
+	dram_base -= sa_get_tseg_size();

/* Get DPR size */
    if (IS_ENABLED(CONFIG_SA_ENABLE_DPR))
@@ -224,7 +208,7 @@
     * PRMMR_BASE MSR. The system hangs if PRMRR_BASE MSR is read before
     * PRMRR_MASK MSR lock bit is set.
     */
-	if (smm_region_start() == 0)
+	if (sa_get_tseg_base() == 0)
    	return 0;

return calculate_dram_base();