acpi: Change Processor ACPI Name (Intel only)

The ACPI Spec 2.0 states, that Processor declarations should be made
within the ACPI namespace \_SB and not \_PR anymore. \_PR is deprecated
and is removed here for Intel CPUs only.

Tested on:
* X11SSH (Kabylake)
* CFL Platform
* Asus P8Z77-V LX2 and Windows 10

FWTS does not return FAIL anymore on ACPI tests

Tested-by: Angel Pons <th3fanbus@gmail.com>
Change-Id: Ib101ed718f90f9056d2ecbc31b13b749ed1fc438
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37814
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

2 files changed, 20 insertions, 20 deletions

diff --git a/src/soc/intel/common/acpi/dptf/cpu.asl b/src/soc/intel/common/acpi/dptf/cpu.asl
index 99dc32a299..982776f701 100644
--- a/src/soc/intel/common/acpi/dptf/cpu.asl
+++ b/src/soc/intel/common/acpi/dptf/cpu.asl
@@ -12,11 +12,11 @@
  * GNU General Public License for more details.
  */
 
-External (\_PR.CP00._PSS, PkgObj)
-External (\_PR.CP00._TSS, PkgObj)
-External (\_PR.CP00._TPC, MethodObj)
-External (\_PR.CP00._PTC, PkgObj)
-External (\_PR.CP00._TSD, PkgObj)
+External (\_SB.CP00._PSS, PkgObj)
+External (\_SB.CP00._TSS, PkgObj)
+External (\_SB.CP00._TPC, MethodObj)
+External (\_SB.CP00._PTC, PkgObj)
+External (\_SB.CP00._TSD, PkgObj)
 External (\_SB.MPDL, IntObj)
 
 Device (DPTF_CPU_DEVICE)
@@ -38,8 +38,8 @@ Device (DPTF_CPU_DEVICE)
 
 	Method (_TSS)
 	{
-		If (CondRefOf (\_PR.CP00._TSS)) {
-			Return (\_PR.CP00._TSS)
+		If (CondRefOf (\_SB.CP00._TSS)) {
+			Return (\_SB.CP00._TSS)
 		} Else {
 			Return (Package ()
 			{
@@ -50,8 +50,8 @@ Device (DPTF_CPU_DEVICE)
 
 	Method (_TPC)
 	{
-		If (CondRefOf (\_PR.CP00._TPC)) {
-			Return (\_PR.CP00._TPC)
+		If (CondRefOf (\_SB.CP00._TPC)) {
+			Return (\_SB.CP00._TPC)
 		} Else {
 			Return (0)
 		}
@@ -59,8 +59,8 @@ Device (DPTF_CPU_DEVICE)
 
 	Method (_PTC)
 	{
-		If (CondRefOf (\_PR.CP00._PTC)) {
-			Return (\_PR.CP00._PTC)
+		If (CondRefOf (\_SB.CP00._PTC)) {
+			Return (\_SB.CP00._PTC)
 		} Else {
 			Return (Package ()
 			{
@@ -72,8 +72,8 @@ Device (DPTF_CPU_DEVICE)
 
 	Method (_TSD)
 	{
-		If (CondRefOf (\_PR.CP00._TSD)) {
-			Return (\_PR.CP00._TSD)
+		If (CondRefOf (\_SB.CP00._TSD)) {
+			Return (\_SB.CP00._TSD)
 		} Else {
 			Return (Package ()
 			{
@@ -84,8 +84,8 @@ Device (DPTF_CPU_DEVICE)
 
 	Method (_TDL)
 	{
-		If (CondRefOf (\_PR.CP00._TSS)) {
-			Store (SizeOf (\_PR.CP00._TSS), Local0)
+		If (CondRefOf (\_SB.CP00._TSS)) {
+			Store (SizeOf (\_SB.CP00._TSS), Local0)
 			Decrement (Local0)
 			Return (Local0)
 		} Else {
@@ -112,8 +112,8 @@ Device (DPTF_CPU_DEVICE)
 
 	Method (_PSS)
 	{
-		If (CondRefOf (\_PR.CP00._PSS)) {
-			Return (\_PR.CP00._PSS)
+		If (CondRefOf (\_SB.CP00._PSS)) {
+			Return (\_SB.CP00._PSS)
 		} Else {
 			Return (Package ()
 			{
@@ -128,8 +128,8 @@ Device (DPTF_CPU_DEVICE)
 		/* Check for mainboard specific _PDL override */
 		If (CondRefOf (\_SB.MPDL)) {
 			Return (\_SB.MPDL)
-		} ElseIf (CondRefOf (\_PR.CP00._PSS)) {
-			Store (SizeOf (\_PR.CP00._PSS), Local0)
+		} ElseIf (CondRefOf (\_SB.CP00._PSS)) {
+			Store (SizeOf (\_SB.CP00._PSS), Local0)
 			Decrement (Local0)
 			Return (Local0)
 		} Else {
diff --git a/src/soc/intel/common/block/acpi/acpi.c b/src/soc/intel/common/block/acpi/acpi.c
index bed4401b5a..b848db446f 100644
--- a/src/soc/intel/common/block/acpi/acpi.c
+++ b/src/soc/intel/common/block/acpi/acpi.c
@@ -433,7 +433,7 @@ void generate_cpu_entries(struct device *device)
 				plen = 0;
 			}
 
-			/* Generate processor \_PR.CPUx */
+			/* Generate processor \_SB.CPUx */
 			acpigen_write_processor((cpu_id) * cores_per_package +
 						core_id, pcontrol_blk, plen);