From 5f525769b9254bebea76512cfd348d8637e898e5 Mon Sep 17 00:00:00 2001 From: Olivier Martin Date: Mon, 27 Oct 2014 10:28:44 +0000 Subject: ArmPkg/ArmGic: Added GicV3 detection Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Olivier Martin Signed-off-by: Harry Liebel git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16232 6f19259b-4bc3-4df7-8a09-765794883524 --- ArmPkg/Drivers/ArmGic/AArch64/ArmGicArchLib.c | 35 +++++++++++++++++++++++++++ ArmPkg/Drivers/ArmGic/Arm/ArmGicArchLib.c | 35 +++++++++++++++++++++++++++ ArmPkg/Drivers/ArmGic/ArmGicLib.c | 9 ------- ArmPkg/Drivers/ArmGic/ArmGicLib.inf | 7 ++++++ ArmPkg/Drivers/ArmGic/ArmGicSecLib.inf | 8 ++++-- 5 files changed, 83 insertions(+), 11 deletions(-) create mode 100644 ArmPkg/Drivers/ArmGic/AArch64/ArmGicArchLib.c create mode 100644 ArmPkg/Drivers/ArmGic/Arm/ArmGicArchLib.c (limited to 'ArmPkg/Drivers') diff --git a/ArmPkg/Drivers/ArmGic/AArch64/ArmGicArchLib.c b/ArmPkg/Drivers/ArmGic/AArch64/ArmGicArchLib.c new file mode 100644 index 0000000000..5a7837f43d --- /dev/null +++ b/ArmPkg/Drivers/ArmGic/AArch64/ArmGicArchLib.c @@ -0,0 +1,35 @@ +/** @file +* +* Copyright (c) 2014, ARM Limited. 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 +* http://opensource.org/licenses/bsd-license.php +* +* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +* +**/ + +#include +#include + +ARM_GIC_ARCH_REVISION +EFIAPI +ArmGicGetSupportedArchRevision ( + VOID + ) +{ + // Ideally we would like to use the GICC IIDR Architecture version here, but + // this does not seem to be very reliable as the implementation could easily + // get it wrong. It is more reliable to check if the GICv3 System Register + // feature is implemented on the CPU. This is also convenient as our GICv3 + // driver requires SRE. If only Memory mapped access is available we try to + // drive the GIC as a v2. + if (ArmReadIdPfr0 () & AARCH64_PFR0_GIC) { + return ARM_GIC_ARCH_REVISION_3; + } + + return ARM_GIC_ARCH_REVISION_2; +} diff --git a/ArmPkg/Drivers/ArmGic/Arm/ArmGicArchLib.c b/ArmPkg/Drivers/ArmGic/Arm/ArmGicArchLib.c new file mode 100644 index 0000000000..668858f79a --- /dev/null +++ b/ArmPkg/Drivers/ArmGic/Arm/ArmGicArchLib.c @@ -0,0 +1,35 @@ +/** @file +* +* Copyright (c) 2014, ARM Limited. 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 +* http://opensource.org/licenses/bsd-license.php +* +* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +* +**/ + +#include +#include + +ARM_GIC_ARCH_REVISION +EFIAPI +ArmGicGetSupportedArchRevision ( + VOID + ) +{ + // Ideally we would like to use the GICC IIDR Architecture version here, but + // this does not seem to be very reliable as the implementation could easily + // get it wrong. It is more reliable to check if the GICv3 System Register + // feature is implemented on the CPU. This is also convenient as our GICv3 + // driver requires SRE. If only Memory mapped access is available we try to + // drive the GIC as a v2. + if (ArmReadIdPfr1 () & ARM_PFR1_GIC) { + return ARM_GIC_ARCH_REVISION_3; + } + + return ARM_GIC_ARCH_REVISION_2; +} diff --git a/ArmPkg/Drivers/ArmGic/ArmGicLib.c b/ArmPkg/Drivers/ArmGic/ArmGicLib.c index 23b312362f..7d99f9f98a 100644 --- a/ArmPkg/Drivers/ArmGic/ArmGicLib.c +++ b/ArmPkg/Drivers/ArmGic/ArmGicLib.c @@ -19,15 +19,6 @@ #include "GicV2/ArmGicV2Lib.h" -ARM_GIC_ARCH_REVISION -EFIAPI -ArmGicGetSupportedArchRevision ( - VOID - ) -{ - return ARM_GIC_ARCH_REVISION_2; -} - UINTN EFIAPI ArmGicGetInterfaceIdentification ( diff --git a/ArmPkg/Drivers/ArmGic/ArmGicLib.inf b/ArmPkg/Drivers/ArmGic/ArmGicLib.inf index def70a0d5e..ca5cd1942b 100644 --- a/ArmPkg/Drivers/ArmGic/ArmGicLib.inf +++ b/ArmPkg/Drivers/ArmGic/ArmGicLib.inf @@ -26,7 +26,14 @@ GicV2/ArmGicV2Lib.c GicV2/ArmGicV2NonSecLib.c +[Sources.ARM] + Arm/ArmGicArchLib.c + +[Sources.AARCH64] + AArch64/ArmGicArchLib.c + [LibraryClasses] + ArmLib DebugLib IoLib diff --git a/ArmPkg/Drivers/ArmGic/ArmGicSecLib.inf b/ArmPkg/Drivers/ArmGic/ArmGicSecLib.inf index 439bb91dae..45382998f0 100644 --- a/ArmPkg/Drivers/ArmGic/ArmGicSecLib.inf +++ b/ArmPkg/Drivers/ArmGic/ArmGicSecLib.inf @@ -26,6 +26,12 @@ GicV2/ArmGicV2Lib.c GicV2/ArmGicV2SecLib.c +[Sources.ARM] + Arm/ArmGicArchLib.c + +[Sources.AARCH64] + AArch64/ArmGicArchLib.c + [Packages] ArmPkg/ArmPkg.dec ArmPlatformPkg/ArmPlatformPkg.dec @@ -34,7 +40,5 @@ [LibraryClasses] ArmLib - ArmPlatformLib DebugLib IoLib - PcdLib -- cgit v1.2.3