acpi: remove CBMEM_ID_ACPI_GNVS_PTR entry

Since we can retrieve the address of ACPI GNVS directly
from CBMEM_ID_ACPI_GNVS, there is no need to store and
update a pointer separately.

TEST=Compile and run on Eve

Signed-off-by: Joel Kitching <kitching@google.com>
Change-Id: I59f3d0547a4a724e66617c791ad82c9f504cadea
Reviewed-on: https://review.coreboot.org/28189
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/arch/x86/acpi.c

@@ -1252,13 +1252,6 @@ void *acpi_find_wakeup_vector(void)
 	return wake_vec;
 }
 
-void acpi_save_gnvs(u32 gnvs_address)
-{
-	u32 *gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS_PTR, sizeof(*gnvs));
-	if (gnvs)
-		*gnvs = gnvs_address;
-}
-
 __weak int acpi_get_gpe(int gpe)
 {
 	return -1; /* implemented by SOC */

src/arch/x86/acpi_s3.c

@@ -226,13 +226,13 @@ void __weak mainboard_suspend_resume(void)
 void acpi_resume(void *wake_vec)
 {
 	if (IS_ENABLED(CONFIG_HAVE_SMI_HANDLER)) {
-		u32 *gnvs_address = cbmem_find(CBMEM_ID_ACPI_GNVS_PTR);
+		void *gnvs_address = cbmem_find(CBMEM_ID_ACPI_GNVS);
 
 		/* Restore GNVS pointer in SMM if found */
-		if (gnvs_address && *gnvs_address) {
+		if (gnvs_address) {
-			printk(BIOS_DEBUG, "Restore GNVS pointer to 0x%08x\n",
+			printk(BIOS_DEBUG, "Restore GNVS pointer to %p\n",
-			       *gnvs_address);
+			       gnvs_address);
-			smm_setup_structures((void *)*gnvs_address, NULL, NULL);
+			smm_setup_structures(gnvs_address, NULL, NULL);
 		}
 	}
 

src/arch/x86/include/arch/acpi.h

@@ -771,8 +771,6 @@ void acpi_write_hest(acpi_hest_t *hest,
 unsigned long acpi_create_hest_error_source(acpi_hest_t *hest,
 	acpi_hest_esd_t *esd, u16 type, void *data, u16 len);
 
-void acpi_save_gnvs(u32 gnvs_address);
-
 /* For ACPI S3 support. */
 void acpi_fail_wakeup(void);
 void acpi_resume(void *wake_vec);

src/commonlib/include/commonlib/cbmem_id.h

@@ -19,7 +19,6 @@
 
 #define CBMEM_ID_ACPI		0x41435049
 #define CBMEM_ID_ACPI_GNVS	0x474e5653
-#define CBMEM_ID_ACPI_GNVS_PTR	0x474e5650
 #define CBMEM_ID_AFTER_CAR	0xc4787a93
 #define CBMEM_ID_AGESA_RUNTIME	0x41474553
 #define CBMEM_ID_AMDMCT_MEMINFO 0x494D454E
@@ -81,7 +80,6 @@
 #define CBMEM_ID_TO_NAME_TABLE				 \
 	{ CBMEM_ID_ACPI,		"ACPI       " }, \
 	{ CBMEM_ID_ACPI_GNVS,		"ACPI GNVS  " }, \
-	{ CBMEM_ID_ACPI_GNVS_PTR,	"GNVS PTR   " }, \
 	{ CBMEM_ID_AGESA_RUNTIME,	"AGESA RSVD " }, \
 	{ CBMEM_ID_AFTER_CAR,		"AFTER CAR  " }, \
 	{ CBMEM_ID_AMDMCT_MEMINFO,	"AMDMEM INFO" }, \

src/soc/amd/stoneyridge/acpi.c

@@ -293,7 +293,6 @@ void southbridge_inject_dsdt(struct device *device)
 
 	if (gnvs) {
 		acpi_create_gnvs(gnvs);
-		acpi_save_gnvs((uintptr_t)gnvs);
 
 		/* Add it to DSDT */
 		acpigen_write_scope("\\");

src/soc/intel/baytrail/southcluster.c

@@ -509,7 +509,6 @@ static void southcluster_inject_dsdt(struct device *device)
 
 	if (gnvs) {
 		acpi_create_gnvs(gnvs);
-		acpi_save_gnvs((unsigned long)gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);
 

src/soc/intel/braswell/acpi.c

@@ -542,7 +542,6 @@ void southcluster_inject_dsdt(struct device *device)
 			gnvs->cid1 = wifi_regulatory_domain();
 		else
 			gnvs->cid1 = WRDD_DEFAULT_REGULATORY_DOMAIN;
-		acpi_save_gnvs((unsigned long)gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);
 

src/soc/intel/broadwell/lpc.c

@@ -607,7 +607,6 @@ static void southcluster_inject_dsdt(struct device *device)
 
 	if (gnvs) {
 		acpi_create_gnvs(gnvs);
-		acpi_save_gnvs((unsigned long)gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);
 

src/soc/intel/common/block/acpi/acpi.c

@@ -237,7 +237,6 @@ void southbridge_inject_dsdt(struct device *device)
 
 	if (gnvs) {
 		acpi_create_gnvs(gnvs);
-		acpi_save_gnvs((uintptr_t) gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);
 

src/soc/intel/denverton_ns/acpi.c

@@ -319,7 +319,6 @@ void southcluster_inject_dsdt(struct device *device)
 
 	if (gnvs) {
 		acpi_create_gnvs(gnvs);
-		acpi_save_gnvs((unsigned long)gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);
 

src/soc/intel/fsp_baytrail/acpi.c

@@ -594,7 +594,6 @@ void southcluster_inject_dsdt(struct device *device)
 
 	if (gnvs) {
 		acpi_create_gnvs(gnvs);
-		acpi_save_gnvs((unsigned long)gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);
 

src/soc/intel/skylake/acpi.c

@@ -677,7 +677,6 @@ void southbridge_inject_dsdt(struct device *device)
 	if (gnvs) {
 		acpi_create_gnvs(gnvs);
 		acpi_mainboard_gnvs(gnvs);
-		acpi_save_gnvs((unsigned long)gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);
 

src/southbridge/intel/fsp_rangeley/lpc.c

@@ -434,7 +434,6 @@ static void southbridge_inject_dsdt(struct device *dev)
 	if (gnvs) {
 		memset(gnvs, 0, sizeof(*gnvs));
 		acpi_create_gnvs(gnvs);
-		acpi_save_gnvs((unsigned long)gnvs);
 #if IS_ENABLED(CONFIG_HAVE_SMI_HANDLER)
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);

src/southbridge/intel/lynxpoint/lpc.c

@@ -779,7 +779,6 @@ static void southbridge_inject_dsdt(struct device *dev)
 		gnvs->ndid = gfx->ndid;
 		memcpy(gnvs->did, gfx->did, sizeof(gnvs->did));
 
-		acpi_save_gnvs((unsigned long)gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);