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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Reviewed-by: Evan Lloyd > -----Original Message----- > From: AlexeiFedorov > Sent: 04 July 2018 14:05 > To: edk2-devel@lists.01.org > Cc: Arvind Chauhan ; Thomas Abraham > ; Ard.Biesheuvel@linaro.org; > Leif.Lindholm@linaro.org; Matteo Carlini ; > Stephanie Hughes-Fitt ; nd > ; Thomas Abraham ; Evan > Lloyd ; Sami Mujawar > Subject: [PATCH] Platform/ARM: Correct LevelID in PLPI packages of DSDT >=20 > From: Alexei Fedorov >=20 > Juno's DSDT contains 2 PLPI packages in Clusters #0 and #1 and _OSC metho= d > reports support for platform coordinated mode only. > According to the description of LevelID field in ACPI 6.2 Errata A Specif= ication > #8.4.4.3, "In a platform that only supports platform coordinated mode, th= is > field must be 0." >=20 > This patch fixes the above issue by changing value of LevelID fields from= 1 to > 0. >=20 > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Alexei Fedorov > --- > All the changes can be reviewed at: > https://github.com/AlexeiFedorov/edk2- > platforms/tree/282_correct_levelid_v1 >=20 > Notes: > v1: > - Change LevelID Value of PLPI package from 1 to 0. >=20 > Platform/ARM/JunoPkg/AcpiTables/Dsdt.asl | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) >=20 > diff --git a/Platform/ARM/JunoPkg/AcpiTables/Dsdt.asl > b/Platform/ARM/JunoPkg/AcpiTables/Dsdt.asl > index > 07e32bae21f891461fde0183028e4c0f817e45a7..702b057757457fee40ddfc10 > e91d38c5dd7ca0b8 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) >=20 > - Copyright (c) 2014-2015, ARM Ltd. All rights reserved.
> + Copyright (c) 2014-2018, ARM Ltd. All rights reserved.
> 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)' >=20