[PATCH] Platform/ARM: Correct LevelID in PLPI packages of DSDT

[AlexeiFedorov <Alexei.Fedorov@arm.com>]

From: Alexei Fedorov <alexei.fedorov@arm.com>

Juno's DSDT contains 2 PLPI packages in Clusters #0 and #1 and
_OSC method reports support for platform coordinated mode only.
According to the description of LevelID field in
ACPI 6.2 Errata A Specification #8.4.4.3,
"In a platform that only supports platform coordinated mode,
this field must be 0."

This patch fixes the above issue by changing value of LevelID
fields from 1 to 0.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
---
All the changes can be reviewed at:
https://github.com/AlexeiFedorov/edk2-platforms/tree/282_correct_levelid_v1

Notes:
    v1:
    - Change LevelID Value of PLPI package from 1 to 0.

 Platform/ARM/JunoPkg/AcpiTables/Dsdt.asl | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Platform/ARM/JunoPkg/AcpiTables/Dsdt.asl b/Platform/ARM/JunoPkg/AcpiTables/Dsdt.asl
index 07e32bae21f891461fde0183028e4c0f817e45a7..702b057757457fee40ddfc10e91d38c5dd7ca0b8 100644
--- a/Platform/ARM/JunoPkg/AcpiTables/Dsdt.asl
+++ b/Platform/ARM/JunoPkg/AcpiTables/Dsdt.asl
@@ -1,7 +1,7 @@
 /** @file
   Differentiated System Description Table Fields (DSDT)
 
-  Copyright (c) 2014-2015, ARM Ltd. All rights reserved.<BR>
+  Copyright (c) 2014-2018, ARM Ltd. All rights reserved.<BR>
     This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
@@ -65,7 +65,7 @@ DefinitionBlock("DsdtTable.aml", "DSDT", 1, "ARMLTD", "ARM-JUNO", EFI_ACPI_ARM_O
       })
       Name(PLPI, Package() {
         0, // Version
-        1, // Level Index
+        0, // Level Index
         2, // Count
         Package() { // WFI for CPU
           1, // Min residency (uS)
@@ -157,7 +157,7 @@ DefinitionBlock("DsdtTable.aml", "DSDT", 1, "ARMLTD", "ARM-JUNO", EFI_ACPI_ARM_O
       })
       Name(PLPI, Package() {
         0, // Version
-        1, // Level Index
+        0, // Level Index
         2, // Count
         Package() { // WFI for CPU
           1, // Min residency (uS)
-- 
'Guid(CE165669-3EF3-493F-B85D-6190EE5B9759)'