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| author | Olivier Martin <olivier.martin@arm.com> | 2014-03-26 19:35:17 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2014-03-26 19:35:17 +0000 |
| commit | 44372159a2312201b04f48418f391d6823807e01 (patch) | |
| tree | 11b6961a53671b127e43e597b629e7b3541038e1 /ArmPkg/Drivers | |
| parent | 19dc108b65f6049c10663b713cea4bca83f9d801 (diff) | |
| download | edk2-platforms-44372159a2312201b04f48418f391d6823807e01.tar.xz | |
ArmPkg/ArmCpuLib: Added A57 Errata 806969
This rare errata only affects r0p0
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15400 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Drivers')
| -rw-r--r-- | ArmPkg/Drivers/ArmCpuLib/ArmCortexA5xLib/ArmCortexA5xLib.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/ArmPkg/Drivers/ArmCpuLib/ArmCortexA5xLib/ArmCortexA5xLib.c b/ArmPkg/Drivers/ArmCpuLib/ArmCortexA5xLib/ArmCortexA5xLib.c index 7cae9f17f3..99ee51fb6e 100644 --- a/ArmPkg/Drivers/ArmCpuLib/ArmCortexA5xLib/ArmCortexA5xLib.c +++ b/ArmPkg/Drivers/ArmCpuLib/ArmCortexA5xLib/ArmCortexA5xLib.c @@ -40,6 +40,14 @@ ArmCpuSetup ( 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);
+ }
}
VOID
|