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[edk2,3/3] ArmVExpressPkg: use PSCI for system reset only on AARCH64 platforms

Message ID 1436207186-15424-4-git-send-email-ard.biesheuvel@linaro.org
State New
Headers show

Commit Message

Ard Biesheuvel July 6, 2015, 6:26 p.m. UTC 
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.biesheuvel@linaro.org>
---
 ArmPlatformPkg/ArmVExpressPkg/ArmVExpress.dsc.inc | 1 +
 1 file changed, 1 insertion(+)
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Patch

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