Revision: 15400
http://sourceforge.net/p/edk2/code/15400
Author: oliviermartin
Date: 2014-03-26 19:35:17 +0000 (Wed, 26 Mar 2014)
Log Message:
-----------
ArmPkg/ArmCpuLib: Added A57 Errata 806969
This rare errata only affects r0p0
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <[email protected]>
Modified Paths:
--------------
trunk/edk2/ArmPkg/Drivers/ArmCpuLib/ArmCortexA5xLib/ArmCortexA5xLib.c
Modified: trunk/edk2/ArmPkg/Drivers/ArmCpuLib/ArmCortexA5xLib/ArmCortexA5xLib.c
===================================================================
--- trunk/edk2/ArmPkg/Drivers/ArmCpuLib/ArmCortexA5xLib/ArmCortexA5xLib.c
2014-03-26 19:34:32 UTC (rev 15399)
+++ trunk/edk2/ArmPkg/Drivers/ArmCpuLib/ArmCortexA5xLib/ArmCortexA5xLib.c
2014-03-26 19:35:17 UTC (rev 15400)
@@ -40,6 +40,14 @@
ArmSetCpuExCrBit (A5X_FEATURE_SMP);
}
+ //
+ // If CPU is CortexA57 r0p0 apply Errata: 806969
+ //
+ if ((ArmReadMidr () & ((ARM_CPU_TYPE_MASK << 4) | ARM_CPU_REV_MASK)) ==
+ ((ARM_CPU_TYPE_A57 << 4) | ARM_CPU_REV(0,0))) {
+ // DisableLoadStoreWB
+ ArmSetCpuActlrBit (1ULL << 49);
+ }
}
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