Reviewed-By: Olivier Martin <olivier.mar...@arm.com>

-----Original Message-----
From: Ard Biesheuvel [mailto:ard.biesheu...@linaro.org]
Sent: 06 July 2015 19:26
To: edk2-devel@lists.sourceforge.net; ryan.har...@linaro.org; Olivier Martin; 
leif.lindh...@linaro.org
Cc: Ard Biesheuvel
Subject: [PATCH 3/3] ArmVExpressPkg: use PSCI for system reset only on AARCH64 
platforms

The PSCI specification covers both ARM and AARCH64, however, the ARM Trusted 
Firmware (ATF) reference implementation is only available for AARCH64, and PSCI 
firmware is not widely available for ARM platforms.

So use the EfiResetSystemLib implementation that uses PSCI calls only on 
AARCH64, and revert to the Versatile Express-specific system register interface 
(which is only available during boot time) on ARM platforms.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
---
 ArmPlatformPkg/ArmVExpressPkg/ArmVExpress.dsc.inc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ArmPlatformPkg/ArmVExpressPkg/ArmVExpress.dsc.inc 
b/ArmPlatformPkg/ArmVExpressPkg/ArmVExpress.dsc.inc
index 706861d5e2ec..d9e06781d2a5 100644
--- a/ArmPlatformPkg/ArmVExpressPkg/ArmVExpress.dsc.inc
+++ b/ArmPlatformPkg/ArmVExpressPkg/ArmVExpress.dsc.inc
@@ -223,6 +223,7 @@ [LibraryClasses.common.DXE_RUNTIME_DRIVER]
   CapsuleLib|MdeModulePkg/Library/DxeCapsuleLibNull/DxeCapsuleLibNull.inf
   
ArmPlatformSysConfigLib|ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressSysConfigRuntimeLib/ArmVExpressSysConfigRuntimeLib.inf

+[LibraryClasses.AARCH64.DXE_RUNTIME_DRIVER]
   #
   # PSCI support in EL3 may not be available if we are not running under a PSCI
   # compliant secure firmware, but since the default VExpress EfiResetSystemLib
--
1.9.1


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